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XJ PARTS CATALOG, SECTION C: FUEL SYSTEM

Discussion in 'XJ4Ever - Supporting Vendor' started by chacal, Oct 12, 2013.

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  1. chacal

    chacal Moderator Moderator Supporting Vendor Premium Member

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    SECTION C:

    FUEL SYSTEM ITEMS: Including Airbox, Carbs, Intakes, Fuel Tanks, Sending Units Petcocks, Gas Caps, Tank Mounts, Etc.

    --Introduction.


    RICH, LEAN, or possibly even ritually UNCLEAN or OBSCENE: THE CARB REBUILDING FAQ:

    Let us begin by warning you: an engine that is out of synch may perform AS IF it has a lean, or a rich, or a hanging idle, or a no-idle, or a run-away idle, or any variety of different conditions------if your engine (carbs) have not been synched, then that at is the #1 issue that you should attend to first, before you even READ any of the guidelines below and go and try to adjust and fiddle with things and change settings THAT AREN'T THE CAUSE OF THE REAL PROBLEM!!

    And here are a couple of very good visuals of how a Hitachi or Mikuni CV ("constant velocity") carb actually works. For those of us who are not intimately familiar with these carbs, these videos provide a great basic understanding of what is actually "going on" with your carbs:








    Now here is another interesting video: a fully see-thru operational carburetor. Although a lot of it is somewhat tedious to listen to, the video is great demonstration of the basic concepts of how a carb operates, and especially how the fuel becomes “atomized or aerated” (vapourized) by the airflow thru the carb throat (the venturi).

    https://www.youtube.com/watch?v=toVfvRhWbj8

    However, note that the following items are missing from this basic set-up, and hopefully you’ll be able to visualize where and how the placement of the following items will modify (improve) the behavior of this simplified carb:

    - no pilot fuel circuit.
    - no replaceable jets to regulate the amount of fuel coming thru the main fuel circuit (or, thru the missing pilot fuel circuit).
    - no vacuum piston or attached needle to (also) further regulate (control) fuel flow thru the main fuel circuit (in response to varying vacuum conditions present in the engine)…….this is a lawn tool engine, so basically after start up, it runs at a more-or-less constant speed (rpm’s), as opposed to our engines.
    - no emulsion tube with its little holes in the shaft to pre-aerate the fuel mixture coming up thru the main fuel circuit.
    - the system shown has a true “choke” system for cold-starting (it “chokes” or closes off the air supply thru the carb), complete with a separate, secondary butterfly valve system. On our engines, the carbs use a “starter” system which operates the same as the main or pilot fuel circuit does, but via a different passage and control mechanism…..no independent butterfly valve, no “choking” off of the air supply, no need to open the throttle valve to increase the airflow thru that closed (“choked”) passageway in the carb……rather, the “starter circuit” on Hitachi and Mikuni carbs simply open and close (via the choke plunger valves) a fully separate source/passagway of fuel from the bowl, and thus let none, a little, or a lot of extra fuel into the carb throat. And please never mind that the label on the left control switch says “CHOKE”…………



    Question #1: Why Isn't It Running Right?:

    Below is a semi-useful "general rules-of-thumb" list to help you recognize and diagnose fuel-mixture problems.

    All of these descriptions assume that the carburetors are cleaned and operating properly, are stock (no jet kit), the valves are adjusted properly, and the engine has been synched.

    If any of the above procedures, tasks, actions, or activities have NOT been checked or performed, then do them first, or otherwise all your other efforts will barely even give you "casino odds" at striking it rich and determining what the real cause(s) of your symptoms are......

    Here are the 3 rules you should always follow whenever trying to troubleshoot anything:






    Typical Symptoms and Causes of a Lean Fuel-Mixture Condition:

    - Poor acceleration; the engine feels flat.

    - The engine won't respond when the throttle is snapped open, but it picks up speed as the throttle is closed. (A too-large main jet also mimics this symptom.)

    - Idle speed falls after you blip the throttle, then creeps back up.

    - The engine runs hot, knocks, pings and overheats.

    - A lean pilot fuel circuit condition can be responsible for a creeping or "hanging (high) idle", where rpm's are very slow to return to a normal idle speed, is often a sign of being set lean. Conversely, if the idle drops way low and then (maybe) slowly recovers is often a sign of an overly rich condition.

    - The engine surges or hunts when cruising at part-throttle.

    - Popping or spitting through the carb occurs when the throttle is opened. Or popping and spitting occurs through the pipe on deceleration with a closed throttle.

    - The engine runs better in warm weather, worse in cool.

    - Performance gets worse when the air filter is removed.

    - Fuel levels that are too low will cause a lean condition.

    - Pilot fuel circuit that are partially or completely clogged.

    - Fuel jets that are too small for your application.

    - Pilot mixture screws being set too far "in".

    - In cases where an overly lean fuel condition is suspected, the application of a small amount of "choke" may decrease or eliminate the symptoms.

    - Here's the main reason you don't want to run lean over an extended period of time:

    http://www.xjbikes.com/forums/threads/head-gasket-1982-maxim-650.85273/#post-504365

    A holed piston. Notice how it's right where the plug fires (the hottest point anyway, and made ultra-hotter by a lean fuel condition).



    Typical Symptoms of a Rich Fuel-Mixture Condition:

    - Engine acceleration is flat and uneven and loses that "crisp" feel.

    - The engine "eight-strokes" as it loads up and skips combustion cycles.

    - The engine's idle is rough or lumpy, and the engine won't return to idle without "blipping" the throttle.

    - An overly rich pilot mixture is usually the culprit when the idle drops below normal then slowly recovers.

    - The throttle needs to be open continuously to maintain acceleration.

    - Black, sooty plugs, a sooty exhaust pipe and black smoke from the tailpipe that stinks of unburned fuel.

    - Poor fuel economy.

    - The engine works better when cold. Performance falls off as it warms up or the ambient temperature rises.

    - Engine performance improves when the air cleaner is removed.

    - Fuel levels that are too high will cause a rich condition.

    - A choke system that is slightly hung open or has leaky plunger valves. Leaky valves can be determined via a measurement of vacuum using your synch sticks (or vac gauge) --- while watching the gauge, apply a small amount of downward force on the top of the plunger valve. If it vac draw changes, the plunger isn't sealing very well. Over time a small ridge may build up on the tapered brass plunger valve surface (Hitachi carbs) that may be possible to polish out, or a deformity forms on the rubber seals (Mikuni carbs) that may be possible to reform back into shape.

    - Fuel jets that are too large for your application.

    - Pilot and main FUEL jets being reversed.

    - Pilot and main AIR jets being reversed.

    - Pilot mixture screws being set too far "out".

    - Main jet needle set at too "high" of a position (on some Mikuni models), or that has "risen up" within its head cap (on Hitachi models).

    - A simple test for an overly-rich condition is to remove the air filter element, and see if performance improves. A very dirty air filter will cause an overly rich condition, AND, even if the filter was in good condition, the great increase in airflow accomplished by removing the air filter will tend to dilute an overly rich fuel mixture, and thus allow you to focus on determining the cause of that situation.



    Some common causes of a high idle:

    - Engine has not been synched, as each cylinder "fights" the others for dominance, it can lead to a run-away idle situation.

    - A lean air-fuel mixture condition, which can be caused by a variety of problems......vacuum leaks, plugged or too-small fuel jets, etc. Old or "stale" gas may also cause a lean fuel-air mixture to occur temporarily (until the fuel is used up!).

    - Mixture screws not properly set or adjusted.

    - Vacuum piston sticking or stuck in a partially raised position.

    - Idle speed screw set too high, or set to create a "proper" idle speed when the engine was cold (and thus results in a "high idle" once the engine reaches operating temps). The idle speed when the engine is cold should be modulated via the use of the choke (enrichment) control system, rather than cranking the idle speed screw up.

    - Butterfly valves opened too far; synch screws out of adjustment.

    - Throttle cable wear, adjustment, or throttle lever brackets installed incorrectly or interfering with other nearby objects (cylinder head fins, etc.).

    - Choke (enrichment) circuit is stuck "open"....this can occur even if the choke lever is rotated to the fully closed position, if for some reasons the choke plungers are not fully closing (cable wear, cable adjustment, bent finger brackets, or installation problems). In addition, even if the choke plungers are "closing" fully, if the choke plunger valve face or its seat are worn or scarred, this will allow fuel to leak part the plunger and richen the mixture even if the plungers are closed.



    Some common causes of a “run-away” idle speed:

    If the idle speed starts building and building and eventually “runs-away” to a level that will grenade the engine without you shutting it off:

    https://www.xjbikes.com/forums/thre...-no-vacuum-leaks-detected.120948/#post-607986


    This is typically caused by an out-of-synch condition:

    https://www.xjbikes.com/forums/threads/82-xj-650-startng-problem-surpise.46358/page-2#post-414262


    After reading all of the above, you should by now know the solution……….. 



    Why your engine seems to be schizoid:

    A hanging idle---one that stays high and slowly comes down when decelerating---is a sign of lean mixture. The opposite case, where the idle drops dangerously low then rises, is a sign of rich mixture.

    A bike that runs better when hot is probably lean, and a bike that runs better when cold is probably rich.

    But sometimes a bike that can be adjusted "just right" when cool, but actually starts exhibiting signs of running lean (hanging idle) as it warms up. And if the idle speed is then re-adjusted while the engine is warm, but eventually falls and the bike dies (especially when sitting at a stop light). Or if the pilot screws are adjusted, then it's too rich when cold---all in direct contradiction of the above observations.

    Experience shows that this is a sign of worn throttle shaft seals.....the aluminum carb bodies expand with the heat, but the steel throttle shafts---resting comfortably in a nice cool airflow---don't heat up and therefore don't expand. Once the shaft seals get old and hard, they no longer are able to flex and fill the gap.....so the carb starts drawing air around the shafts, leaning it out.



    Why does my engine sometimes backfire when I first turn on the key (without attempting to start the engine)?:

    - When you kill the engine, the intakes will still have some remaining (un-burned) air-fuel mixture remaining in them. Upon powering up the bike (turning the key on), the ignition system will apply 12 volts to the coils, thus charging them. Of course, that constant current is not good for the coils, so a few seconds later (if the engine is not started) the TCI shuts down the coils by grounding them (to protect the coils from overheating) which cuts the current to the coils and thus triggers a spark to the plugs. If there is enough un-burned fuel in the intake manifolds or the combustion chambers, and if the valves are held open by the camshafts, a backfire thru the exhaust header and/or thru the intake manifolds/carbs/airbox can result.



    Why is my engine hard to start, and using the choke makes no difference?:

    Most probably, the starter jets --- which are tiny, and are down inside the carb bowl ---- are plugged up with fuel varnish or the like.



    Why does my engine run poorly (or is hard to start) after it is fully warmed up?:

    This could be due to leaking throttle shaft seals (where extra seal-to-carb body clearance occurs after the carbs warm up and expand), or, it could point to valve shim clearances that are dangerously tight (the clearances close up after the engine gets fully warmed up).



    Why are my plugs carbon-fouled (dry, sooty black deposits)?:

    - Carbon fouling is the result of incomplete combustion----for any reason. It is most often associated with an overly rich fuel mixture (whatever the cause), but can also be caused by an overly lean fuel mixture (or poor spark, etc.) In a lean-mixture condition, most of the un-burnt mixture gets pumped out the tailpipe, but some fuel droplets remain in the cylinder and add themselves to the next intake charge. That's not a very precise way of metering the mixture, so when it's finally rich enough for a spark to ignite, that particular charge may be too rich, resulting in incomplete combustion and plug fouling. So carbon-fouled plugs can be due to rich or lean conditions.......your Colortune spark plug will tell you for sure. If you have a light blue or white-ish flame, intermittent flame, and/or intermittent flashes of yellow within an otherwise white-ish flame, then your fuel mixture is too lean.

    And by the way.........if the spark that happens to ignite this overly-rich mixture is the "wasted spark" (which occurs in each cylinder at the top of the exhaust stroke, it will occur JUST AS THE INTAKE VALVE IS OPENING ---- so the backfire pressure wave may be directed back up the intake tract!



    Why are my plugs oil-fouled (wet, oily black deposits)?:

    - worn or broken piston rings, excessive wear or damage to cylinders, *leaking intake valve stem seals.

    * while bluish smoke from the exhaust can be caused by worn exhaust valve seals, that situation will not foul your spark plugs. Consider what happens: oil pools above the valve guides, and coats the valve stems every time they rise. These stem "seals" really aren't seals, they are more like wipers, and their function is mainly to wipe off the excess oil from the valve stem. Now, when these stem seals get old and hard, they leave an excess amount of oil on the valve stem, which then drops down into the path of the exhaust gas flow as the valve opens and the oil is evaporated off, leaving blue smoke from the exhaust. But note that none of that oil ever enters the combustion chamber, so it can't foul the plugs.

    Of course, any excessive oil coating an intake valve stem will end up going through the cylinder, but intake valve stem seals rarely fail on these engines. Unlike the exhaust valves, which are constantly baked by superheated exhaust gas, the intake valves are bathed in cool and moist (with gasoline) air.



    Why is the inside of my carbs covered with a brownish-green goo?:

    When fuel mixes with water and sits around for a while, this is the result. Nasty looking, nasty smelling, and you can bet that the tiny passages inside the carb body are plugged solid with this stuff! Definitely time for a full rebuild.......



    What are my fuel levels supposed to be?:

    Here's the Holy Grail on this subject:

    http://www.xj4ever.com/setting fuel levels.pdf

    And here’s a good visual guide to some problems that you might run into:

    http://www.xjbikes.com/forums/threads/setting-the-floats-mikuni-not-gettin-any-readings-fixed.40395

    and here’s a wonderful video from TurpentyneTV that shows the whole process in excruciating detail:





    Fuel Level Cheat Sheet:

    Here's the proper fuel-level settings by model when using the "clear-tube" method of measurement:


    Hitachi all HSC32 series models:

    NOTE: all of the following models used HSC32 carbs:
    XJ650 Maxim, Midnight Maxim, XJ650RJ Seca (non-turbo), XJ650 Euro all use HSC32 carbs (various versions)
    XJ750 all USA 1981-83 models use HSC32 version 5G200 (Seca) and 15R00 (Maxim and Midnight Maxim)
    XJ750 all Canadian 1981-83 models use HSC32 version 5H200 (Seca) and 15T00 (Maxim and Midnight Maxim)
    XJ750 UK/Europe 11M models, XJ750 Police models 24L and 37H use HSC32 version 5N100

    -Fuel level measured via the clear-tube gauge: 3mm +/- 1mm (.12 +/- .04 inches)

    -Float height: 17.5 +/- 0.5mm


    Hitachi HSC33 series (XJ700 air-cooled models):

    -Fuel level measured via the clear-tube gauge: 1.0mm +/- 1mm (.039" +/- .039")

    -Float height: 16.0 +/- 1.0mm


    Hitachi HSC33 series (XJ750E-II model):

    -Fuel level measured via the clear-tube gauge: 5.0mm +/- 1mm (.197" +/- .039")

    -Float height: unknown


    Hitachi HSC33 series (XJ750RL models):

    -Fuel level measured via the clear-tube gauge: 1.0mm +/- 1mm (.039" +/- .039")

    -Float height: unknown, but possibly the same as XJ700 air-cooled models (16.0 +/- 1.0mm)


    Mikuni BS28 (all XJ550 except 1984 XJ550L):

    -Fuel level measured via the clear-tube gauge: 2mm +/- 1mm (.08 +/- .039 inches)

    -Float height: 21.5 +/- 1.0mm


    Mikuni BDS26 (USA all 1992-98 XJ600 Seca II):

    -Fuel level measured via the clear-tube gauge:
    USA: 4 - 6mm (.016 - 0.24”) below float chamber line

    -Float height: 6.2 - 8.2mm (0.24 - 0.32”)


    Mikuni BDST28 (non-USA all 1992-98 XJ600 Seca II):

    -Fuel level measured via the clear-tube gauge:
    1992-96 Canada and Australia: 3 - 5mm (0.12 - .0.20”) above float chamber line
    1992-95 UK: 3 - 5mm (0.12 - .0.20”) above float chamber line
    1996-98 UK: 8.5 - 9.5mm (0.34 - .0.37”) above float chamber line

    -Float height:
    1992-96 Canada and Australia: 11 - 13mm (0.43 - 0.512”)
    1992-95 UK: 11 - 13mm (0.43 - 0.51”)
    1996-98 UK: 8.8 - 10.8mm (0.35 - 0.42”)


    Mikuni BS32 (all XJ550L, 1984-85 FJ600, and 1984-87 / 1989-91 XJ600):

    -Fuel level measured via the clear-tube gauge: 3mm +/- 1mm (.12 +/- .04 inches)

    -Float height: unknown


    Mikuni BS30 (all XJ650 Turbo):

    -Fuel level measured via the clear-tube gauge: 2mm +/- 1mm (.08 +/- .04 inches)

    -Float height: 21.0 +/- 0.5mm


    Mikuni BS33 (all XJ700-X and XJ750-X):

    -Fuel level measured via the clear-tube gauge: 3mm +/- 1mm (.12 +/- .04 inches)

    -Float height: 17.5 +/- 1.0mm


    Mikuni BS35 (all XJ900RK/RL):

    -Fuel level measured via the clear-tube gauge: 5mm +/- 1mm (.20 +/- .04 inches)

    -Float height: 22.3 +/- 0.5mm


    Mikuni BS36 (all XJ900F, FN, N, etc):

    -Fuel level measured via the clear-tube gauge: 5mm +/- 1mm (.20 +/- .04 inches)

    -Float height: 22.3 +/- 0.5mm


    Mikuni BS34 (all XJ1100 and XS1100):

    -Fuel level measured via the clear-tube gauge: 3mm +/- 1mm (.12 +/- .04 inches)

    -Float height:
    25.7 +/- 1.0mm (1978-79 all models)
    23.0 +/- 0.5mm (1980 all models)
    not specified (1981-82 all models)



    Question #2: What Parts Will I Need?:

    The parts you'll need depends on what is there, what is missing, what is worn out, what gets broken or damaged during the dis-assembly process, etc., but the "basic items" needed for the rebuild process (besides any special tools and tuning equipment) is as follows:

    - throttle shaft seals (you'll have to split the carbs from the rack to replace these).

    - fuel supply tube o-rings (you'll have to split the carbs from the rack to replace these) on the models that use them (some Mikuni carbs do not use these).

    - float valve needle and seat rebuild kit (seat, needle, clip, seat washer. The float valve seat filter screens are also available separately). Mikuni owners will also want to replace the float valve seat o-rings.

    - float bowl gaskets.

    - idle mixture washers & o-rings for sure, and the idle mixture screw springs and mixture screws if they are damaged.

    - jets, if damaged or incorrectly sized.

    - carb bowl fuel drain screws, if damaged.

    - new replacement carb hardware (screws, etc.)---now is the time to upgrade to stainless steel and/or allen-head fasteners if so desired!



    From Our Experience:

    Since the carburetors are THE most troublesome (and thus most expensive) aspect of these bikes, let me offer a few dozen words and insights about them, their service, and expense:

    These carbs are quite simple, mechanically speaking.

    The process of making DARNED SURE that you get them unbelievably, positively zestfully clean is a matter of stick-to-it-ness and resisting all attempts to take "shortcuts" or to brush off the tedious aspects of it. Many of the passages in these carbs are tiny, and it's that "tiny-ness" that bites most people, as they don't want to or don't realize the amount of effort that has to be undertaken to deal with such small passages.

    If you read through these forums, you'll see many tales of woe of people who are now "cleaning" their carbs for the 2nd, 3rd, or 4th time BEFORE they get it right. The problem is, they never really "cleaned" them correctly the first, 2nd, and 3rd time. After all of the frustration and hassle involved, by the time they get around to the 4th go-around, then they understand that when people who have SUCCESSFULLY rebuilt carbs say things like "you'd better make SURE that you get clear flow through each and every passage, and you'd better polish that piston diaphram bore", etc. aren't just saying that to be over-the-top retentive about their own habits and style of working on these carbs, what they're really doing is issuing an experienced WARNING: do it right, or keep doing it again, and again, and again. And although they're kind of fun little critters to play with, taking them all apart and putting Humpty Carby all back together again, well, it's time better spent on other things.


    Think we're kidding? The following thread is a "must read", because the title says it all:

    http://xjbikes.com/forums/index.php?threads/17821


    One last note: "cleaning" the carbs (internally, not just making them look pretty on the outside) is just one of the small subsets of tasks necessary to the proper REBUILDING of the carbs. I cannot stress this point enough. The use of the term "cleaning" is used as if it were the end goal of the process; in reality, the proper way to think about it would be this:

    "A complete and exceptional level of carb CLEANING is a vital and necessary part of the process of properly REBUILDING the carbs."

    And what are the other components of the rebuilding puzzle?

    a) getting the darned things off the bike! This might help:

    http://xjbikes.com/forums/index.php?threads/29695

    and

    http://www.xjbikes.com/forums/threads/made-a-how-to-video.103484/


    b) replacing the worn, missing, or necessary "wear parts" on the carb.


    c) Proper "service" work to the carb bodies, especially:

    - polishing the piston bore for silky smoothness.
    - repair or clean up of any stripped threads in the carb bodies.
    - replacement of any damaged or worn parts. In fact, the ability the recognize what is damaged and worn (besides the parts above which are designed to wear out) is the most difficult part of the entire task, since it requires a level of experience: are my needle tips worn? What, exactly, does a worn needle tip look like? How "smooth" is smooth enough? Etc. This is where the advice and experience of the members of this forum are invaluable.


    d) Proper "settings" of the various components during re-assembly:
    - the fuel levels (float heights).
    - the "basic or bench synch" of the throttle valves


    e) On-bike "settings":

    - first and foremost, the measurement and setting to specifications of the valve train (shim) clearances. Failure to do this "wastes" 90% of your efforts involved with the carbs.
    - final synch (using some type of manometer and the YICS tool if your engine is YICS-equipped)
    - idle mixture screw setting, preferably using a Colortune plug.


    f) A lot of useful "how-to" threads can be found at:

    http://xjbikes.com/forums/index.php?threads/27544

    and scroll down to the CARBS and FUEL SYSTEM: section........



    One last thought about these carbs, since they are THE most troublesome aspects of these bikes, and something to consider:

    - the four carbs concept is really neat looking, and is certainly performance-oriented to the extreme.

    - for many of us who had lots of experience with automotive carbs, just beware that while these Hitachi and Mikuni carbs are a bit different in operation (and thus parts), a carb is a carb, and they're pretty basic little devices. The main difference is that the fuel circuit passages on these carbs can get bizarrely tiny, especially if you're used to working on automotive carbs (which have canyon-sized fuel passages compared to these carbs).

    - like I've said, the cleanliness part is really just tedious work, with a couple of "tricks" thrown into the mix, given the small sizes you're having to deal with. The "rebuild" part is basic mechanical knowledge and skills, knowing which way to turn a screwdriver to loosen vs. tighten, when and how much force to use or not, being organized, stuff like that.

    - but the "tuning" part will require some special tools, but no type of any rocket-science knowledge or skills----once you master the rebuild and tuning process with these bikes, you are pretty much a Carb Tuning God, as these carbs are about as "complicated" as it gets with carburetors. I mean, VERY few vehicles have multi-carbs, not until you get to the really high-performance machines level in the automotive world.

    - well, as "complicated as it gets" until you start adding pods, etc.----which if you do, I sure hope you've got every last one of the basics listed above down to a science, and you can do it all, properly, and blindfolded, too!

    - finally, if you do not have a service manual(s) for your particular bike(s), and you're going to wrench on it and want to do things right, then the only thing I can surmise from such a course of action is:

    a) you're already an expert, or.....

    b) you aren't really serious about doing things right, and that's okay, too---just don't expect good, quick, or cheap results!



    The following guide may save untold hours of frustration and grief:

    http://xjbikes.com/forums/index.php?threads/14692
     
    Last edited: Jul 9, 2021
  2. chacal

    chacal Moderator Moderator Supporting Vendor Premium Member

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    SECTION C:

    FUEL SYSTEM ITEMS: Including Airbox, Carbs, Intakes, Fuel Tanks, Sending Units Petcocks, Gas Caps, Tank Mounts, Etc.

    --Hitachi Parts



    HITACHI CARB REBUILD PARTS:

    NOTE: Hitachi carbs were originally used on all Yamaha XJ650 models (except Turbo models), all 1981-84 XJ750 models, and all XJ700 (non-"X") models. All other XJ models from this era (XJ550, XJ650 Turbo models, XJ700 "X" models, XJ900, and XJ1100 models) used Mikuni carbs.

    There are two different main types of the Hitachi HSC series carbs used on the XJ-series bikes of this era:

    HSC32: used on all 1981-84 XJ650 models using Hitachi carbs.

    HSC33: used on all 1985-86 XJ700 air-cooled engines, 1983 XJ750E-II, and XJ750RL models using Hitachi carbs.

    HSC40: used on some XV700, XV750, XJ920, XV1000, and XV1100 models. Note that some later 1980's Virago models changed to using Mikuni carbs.

    The "series" number of the carbs refers to the internal diameter of the carb throat (the area where the butterfly valves are) and is expressed in the closest millimeter measurement. Thus the HSC32 series carbs have a 32mm ID throat, and the HSC33 series carbs have a 33mm ID throat.

    Original carb bodies are typically marked with an ink stamping that identifies the intended use of the carbs......for example, the 1982-83 XJ650 Maxim carbs (US models) would have an ink stamping that reads "5N800", while the XJ650 Maxim carbs (Canadian models) carbs would be inked as "5N900", while the 1981-83 XJ750 Seca (USA) carbs are inked "5G200", etc. This ink stamp could have been on the carb bodies, or on the sides or bottom of the bowls......and, after 20+ years and a number of carb cleaning efforts, are probably long gone.

    Different series of Hitachi carbs can be quite difficult to properly identify from one another, and Hitachi carbs were also used on other manufacturer model bikes, and while even the same "series" of Hitachi carbs may have been used on, say, a certain Kawasaki model bike, the internal jetting, valving, and other design elements (choke actuation method, etc.) typically renders such carbs as "similar but different enough" to not be directly (or even indirectly!) interchangeable with the proper Yamaha version carbs for a particular model.

    Please note that although the HSC33 series carbs are very similar in design and appearance to the HSC32 series, and although many parts do interchange between these two different series of carbs, the HSC33 carbs are different in some key components and in their physical size (the throats are bigger, the carb spacing is wider, and the entire rack of carbs is slightly longer than the HSC32's). It may be difficult, if not impossible, to properly swap the HSC32 and HSC33 carb racks between bikes due to these differences.



    NOTE: "OEM" refers to an original Yamaha factory part, whereas "Replacement" or "Aftermarket" refers to a part not made by Yamaha or one of their original suppliers. Note that an "OEM" part may be made by Yamaha's original supplier, even though such part is no longer serviced through the Yamaha factory parts system.


    j1) XJ models Hitachi HSC32/HSC33 USED PARTS.....jets, bowls, bodies, diaphragms/slides, floats, brackets, screws, etc. We may have some good used items that you need, let me know what specific parts you're looking for.



    HITACHI CARB UPPER END PARTS:

    NOTE: fuel jets, air jets, float valves, and main jet needles are located in the section "LOWER END PARTS" further below.


    THROTTLE SHAFT REBUILD PARTS:

    Throttle Shaft Seals:

    aaa) OEM and aftermarket Hitachi HSC32/33/40 series carb THROTTLE SHAFT SEALS...these are the seals on the outside of the carb body that the throttle shaft passes through. Uses 2 per carb, but without taking the carbs apart from their rack, the only ones you can replace are the outer-most seals on the end carbs. These seals will fit almost all stock Hitachi carbs used in the 1980-and 90’s models, including all XJ650, all XJ700, and all XJ750 models, as well as 1980-81 XS850 engines and various 1984-87 XV700, 1981-83 and 1988 XV750, 1981-83 XV920, 1984-85 XV1000, 1986-87 XV1100, 1983-85 XVZ12, 1983 XVZ1300, 1986-90 XVZ13, and 1985-86 and many 1989-up VMX12 V-Max models which use Hitachi carbs.

    The aluminum-bodied carbs, when heated by conduction from the engine, tend to expand more quickly and by a greater amount than the air-cooled steel throttle shafts.

    Thus as these shaft seals wear and harden, they can't always maintain a vacuum-tight seal in all conditions, resulting in a lean running condition once the engine is warmed up----even though they "seal" perfectly well at idle, or when the carb bodies are still cool. If the pilot screws are adjusted with the bike partially warmed up, it may appear to be richer than necessary when cool, and then running lean when hot, resulting in an incredibly confusing and frustrating situation to diagnose and remedy.

    These V-shaped seals are installed with their open “face” facing away from the carb throat. The OEM seals (HCP6838B) have one open face and one closed face, while the aftermarket HCP38B seals are like the original-installed seals, and have an “open” face on both sides (and thus for the HCP38B seals, it does not matter in which direction they are installed!).

    An excellent write-up on the process required to take the carbs apart fully and replace these seals can be reviewed at:

    http://www.xj4ever.com/hitachi throttle shaft seals.pdf


    HCP6838B OEM Hitachi throttle shaft SEAL, each:
    $ 7.95

    HCP6838BSET2 OEM Hitachi throttle shaft SEALS, pair:
    $ 14.95

    HCP6838BSET4 OEM Hitachi throttle shaft SEALS, set of 4:
    $ 27.95

    HCP6838BSET6 OEM Hitachi throttle shaft SEALS, set of 6:
    $ 41.95

    HCP6838BSET8 OEM Hitachi throttle shaft SEALS, set of 8:
    $ 54.95



    HCP38B Aftermarket Hitachi throttle shaft SEAL, each:
    $ 5.95

    HCP38BSET2 Aftermarket Hitachi throttle shaft SEALS, pair:
    $ 10.95

    HCP38BSET4 Aftermarket Hitachi throttle shaft SEALS, set of 4:
    $ 21.95

    HCP38BSET6 Aftermarket Hitachi throttle shaft SEALS, set of 6:
    $ 31.95

    HCP38BSET8 Aftermarket Hitachi throttle shaft SEALS, set of 8:
    $ 42.95


    We recommend the use of silicone grease when installing any of these seals:

    HCP28407 Aftermarket o-ring, oil seal, and gasket installation pure SILICONE GREASE. This small 5-gram (1/6-oz) snap-open "pillow packet" is enough for a few small oil seals, dozens of o-rings, and the like. Each:
    $ 4.95

    HCP1714 Aftermarket o-ring, oil seal, and gasket installation pure SILICONE GREASE. This generous 14-gram (1/2-oz.) tub goes a long way, because just like Brylcreem, "just a little dab will do ya'!" Each:
    $ 9.95



    NOTE: the following product(s) can only be shipped via ground transport (which thus eliminates the postal Priority Mail, postal Express Mail, or private carrier Expedited levels of service for this item) and cannot (and will not----don't even ask!) be shipped outside of the continental USA. Additionally, there may be a per-package weight or quantity restriction, and thus multiple-unit orders of this product may have to be shipped in separate packages and will incur additional shipping charges.

    HCP20861 Aftermarket industrial-strength SILICONE LUBE, in a large 16-ounce aerosol can. Concentrated silicone sprays on wet, and then dries to a super-slick, clear, non-greasy, non-staining finish. Resists moisture, stops squeeks, prevents binding on all types of surfaces (wood, metal, plastic, rubber, even fabrics). Won't wash away, protect against rust and corrosion, stable from -100 degrees up to 500-F. This fluid is also a great choice for use as installation lubricant for o-rings, oil seals, etc. (similar to our HCP1714 or HCP28407 silicone grease paste) or wherever petroleum-based lubricants are not recommended.
    $ 24.95



    COMMENTARY: These seals are a VERY common source of vacuum leaks into the carbs, making tuning (synch, colortune, etc.) somewhere between very difficult and next-to-impossible. And here's the dirty little secret that no one really talks about:

    If you read through these boards often and enough---or any other websites or lists devoted to these XJ bikes----you'll find a common theme in regards to these bikes, and it goes something like this:

    "My bike doesn't run right."

    And 9 times out of 10, it's due to a carb problem. And to make matters worse, these bikes don't just use one carb, they use four, which means that the synchronization of the four carbs to each other is critical in order for them to perform properly.

    And 95% of the problems with the carbs is this: they are dirty (more like filthy!) inside due to age, and these seals are worn out. But to replace these seals (and also to properly get the insides of the carbs absolutely, positively, ZESTFULLY clean), you're gonna have to pull the carb rack apart. Although that task is not mechanically difficult....nor does it take any special tools to do it.....the re-assembly process will MERCILESSLY PUNISH the careless or impatient mechanic or hobbyist. A tremendous attention to detail and organization is needed before you begin to take these carbs apart, so that you will have all the proper notes, drawings, sketches, etc. to put humpty-dumpty back together again, properly.

    Since most people lack those skills or discipline, you will find most of the experienced experts on the various boards and forums telling you to NOT take the carbs apart, and to forego the proper cleaning and parts replacement steps needed.

    I'm not trying to tell you to do, or not to do the task properly yourself; all I can tell you is what my own personal experience is. If you have the proper tools, time, and organizational skills and the PATIENCE to do the job right, breaking a rack apart and doing the job properly isn't that difficult. If you don't, it's a nightmare.

    And the other dirty little secret is this: before you can synch and tune your carbs properly, you MUST check and adjust your valve clearances (replace worn valve shims), or all the synching and colortuning in the world isn't going to give you optimal results.

    Sorry to be the bearer of such bad news, but as always, the truth will set you free (or at least solve most of your tuning and performance issues!).

    Luckily, all of the parts and special tools needed to perform a proper tune up ARE available. I guess we should appreciate the little things in life more than we usually do........


    We also strongly recommend the purchase of a new set of throttle shaft butterfly retaining screws, as it is very common to strip the heads out of the original screws while removing them. Replacement screws are listed further below.

    Also, you may find it next-to-impossible to properly remove the original screws without using the proper JIS-style screwdriver. Typical "phillips-drive" style screwdrivers do not have the proper tip design to engage the slots on JIS-specifications screws (which all screws on Japanese bikes are) and tend to very easily strip out the screw heads. We offer complete sets of various sized JIS screwdrivers, but those people wanting only the correct size screwdriver for these throttle shaft screws should order the HCP5901 (size #2) screwdriver:


    JIS Screwdrivers:

    mt1) Almost every screw on these bikes are "JIS" design screws, JIS standing for Japanese Industrial Standards, and both the depth and design on the phillips-head "slot" is different than typical US slots. In a nutshell, JIS screws (which can be easily identified by the small punched single "dot" on the screw head, in-between two of the screw slots) have both deeper and "squarer" slots and thus can hold more torque than their rest-of-the-world counterparts. They also require a JIS screwdriver to take full advantage of, and to prevent rounding out the slots as typical phillips screwdrivers will do. The more "rounded" edges of a standard phillips-drive screwdriver cannot exert as much torque on the screw head (by design, actually) and will "cam-out" of the slots, taking some of the slot material with it.....and then you have what is affectionately known as a !!#&$!?**#! stripped out screw head!

    So it might be a good idea to also invest in a set of quality JIS screwdrivers; trust me, they make a difference (and yes, they can be used on standard phillips-drive screws, too).

    We offer these tools in three different quality grades and styles to meet your particular needs:

    * Standard-Grade screwdrivers are a low-cost alternative that do a fine job in light-duty use.
    * Mechanics-grade screwdrivers are a heavy-duty design and is recommended for the typical home mechanic or shop.
    * Impact-grade screwdrivers feature a hardened “head” and an internal cam-drive that rotates the shaft about 12-degrees when struck by a hammer -----similar to the operation of an impact driver, but in a much more useful form. These drivers look, feel, and operate just like a mechanic-grade screwdriver above, but can also be given a sturdy “whack!” to help persuade frozen fasteners to give up their grip. Highly recommended when working on the carbs (the upper and lower rack bracket screws are a beast to remove without an impact driver ) or in any number of other situations when working on seized or rusted fasteners.


    Basic JIS Screwdriver Sets:

    HCP21127 Aftermarket JIS-standards STANDARD-GRADE SCREWDRIVER SET. This set of 3 drivers contains one each of standard-length #1, #2, and #3 size phillips-drive, JIS-standard screwdrivers, and this range of sizes will handle everything down to an M2 sized screw (that's tiny, smaller than the size of the petcock faceplate mounting screws) all the way up to the biggest screws commonly used on these bikes. These standard-grade screwdrivers all feature a comfortable gel-covered handle, black-chrome plated steel shafts, and magnetized drive tips.
    $ 42.95

    HCP17479 Aftermarket JIS-standards MECHANICS-GRADE SCREWDRIVER SET. This set of 3 drivers contains one each of standard-length #1, #2, and #3 size phillips-drive, JIS-standard screwdrivers, and this range of sizes will handle everything down to an M2 sized screw (that's tiny, smaller than the size of the petcock faceplate mounting screws) all the way up to the biggest screws commonly used on these bikes. These mechanics-grade screwdrivers all feature sturdy comfort-grip handles, chrome plated steel shafts, and magnetized drive tips.
    $ 49.95

    HCP23604 Aftermarket JIS-standards MECHANICS-GRADE SCREWDRIVER BITS SET. This set of 4 driver bits contains one each of 1/4” hex-drive bits in the #0, #1, #2, and #3 size phillips-drive, JIS-standard screwdriver bits, and this range of sizes will handle everything down to an M1 sized screw (that's tiny, smaller than the size of the petcock faceplate mounting screws) all the way up to the biggest screws commonly used on these bikes. These mechanics-grade screwdriver bits are approximately 1” long and are designed to be used in a 1/4” bit holder or similar..
    $ 17.95



    Carb Rebuild Screwdriver Sets:

    HCP21183SET Aftermarket JIS-standard MECHANICS-GRADE SCREWDRIVER SET. This set of 3 drivers contains one each of the standard-length #2 and #3 size phillips-drive, JIS-standard screwdrivers, and a stubby straight-blade screwdriver that properly fits the pilot mixture screw slot. This range of sizes will handle everything down to an M3 sized screw all the way up to the largest screws found on the carbs. These mechanics-grade screwdrivers all feature sturdy comfort-grip handles, chrome plated steel shafts, and magnetized drive tips.
    $ 54.95

    HCP21184SET Aftermarket JIS-standard IMPACT-GRADE SCREWDRIVER SET. This set of 3 drivers contains one each of the standard-length #2 and #3 size phillips-drive, JIS-standard impact screwdrivers, and a stubby straight-blade screwdriver that properly fits the pilot mixture screw slot. This range of sizes will handle everything down to an M3 sized screw all the way up to the largest screws found on the carbs. These mechanics-grade screwdrivers all feature sturdy comfort-grip handles, knurled chrome plated steel shafts, and “sure-grip” textured, magnetized drive tips. The inclusion of the impact drivers can make the breakdown of the carb rack much easier.
    $ 74.95


    Fuel System Service Screwdriver Sets:

    These sets are the same as the Carb Rebuild Sets above, but also include the #1 sized phillips-drive JIS-tip screwdriver that will be useful when servicing the petcock.

    HCP21185SET Aftermarket JIS-standards MECHANICS-GRADE SCREWDRIVER SET. This set of 4 drivers contains one each of the standard-length #1, #2, and #3 size phillips-drive, JIS-standard screwdrivers, and a stubby straight-blade screwdriver that properly fits the pilot mixture screw slot. This range of sizes will handle everything down to an M3 sized screw all the way up to the largest screws found on the carbs. These mechanics-grade screwdrivers all feature sturdy comfort-grip handles, chrome plated steel shafts, and magnetized drive tips.
    $ 64.95

    HCP21186SET Aftermarket JIS-standards IMPACT-GRADE SCREWDRIVER SET. This set of 4 drivers contains the standard-length #1 phillips-drive, JIS-standard screwdriver, one each of the #2, and #3 size phillips-drive JIS-tip impact screwdrivers, and a stubby straight-blade screwdriver that properly fits the pilot mixture screw slot. This range of sizes will handle everything down to an M3 sized screw all the way up to the largest screws found on the carbs. These mechanics-grade screwdrivers all feature sturdy comfort-grip handles, knurled chrome plated steel shafts, and “sure-grip” textured, magnetized drive tips. The inclusion of the impact drivers can make the breakdown of the carb rack much easier.
    $ 84.95


    Full Service Screwdriver Sets:

    HCP21187SET Aftermarket JIS-standards MECHANICS-GRADE SCREWDRIVER SET. This set of 6 drivers contains a set of standard-length of the #1, #2, and #3 size phillips-drive, JIS-standard screwdrivers, one each of the stubby #1 and #2 size phillips-drive JIS-tip screwdrivers, and a stubby straight-blade screwdriver that properly fits the pilot mixture screw slot. This range of sizes will handle everything down to an M3 sized screw all the way up to the largest screws found on the carbs. These mechanics-grade screwdrivers all feature sturdy comfort-grip handles, chrome plated steel shafts, and magnetized drive tips.
    $ 99.95

    HCP21188SET Aftermarket JIS-standards IMPACT-GRADE SCREWDRIVER SET. This set of 6 drivers contains a standard-length #1 JIS-tip screwdriver, one each of the #2 and #3 size phillips-drive, JIS-standard impact drivers, one each of the stubby #1 and #2 size phillips-drive, JIS-standard screwdrivers, and a stubby straight-blade screwdriver that properly fits the pilot mixture screw slot. This range of sizes will handle everything down to an M3 sized screw all the way up to the largest screws found on the carbs. These mechanics-grade screwdrivers all feature sturdy comfort-grip handles, knurled chrome plated steel shafts, and “sure-grip” textured, magnetized drive tips. The inclusion of the impact drivers makes the removal of stuck or seized fasteners much easier and more convenient. With this set you can rule the world in style!
    $ 119.95



    Individual JIS-standards Screwdrivers:

    The #2 and #3 size phillips-drive screwdrivers fit the most commonly used size screws on the carbs, gauge clusters, etc.

    HCP21181 Aftermarket straight-blade STUBBY SCREWDRIVER, short 1” shaft length, modified to properly fit the pilot mixture screw slotted head.
    $ 19.95

    HCP21130 Aftermarket size #1 JIS-standards STUBBY SCREWDRIVER, for m2-m4 sized screws, short 1” shaft length.
    $ 18.95

    HCP21131 Aftermarket size #2 JIS-standards STUBBY SCREWDRIVER, for m3-m5 sized screws, short 1” shaft length.
    $ 19.95



    HCP5900 Aftermarket size #1 JIS-standards SCREWDRIVER, for m2-m4 sized screws, standard 3” shaft length.
    $ 14.95

    HCP5901 Aftermarket size #2 JIS-standards SCREWDRIVER, for m3-m5 sized screws, standard 4” shaft length.
    $ 17.95

    HCP5902 Aftermarket size #3 JIS-standards SCREWDRIVER, for m6-m8 sized screws, standard 6” shaft length.
    $ 21.95

    HCP5903 Aftermarket size #4 JIS-standards SCREWDRIVER, for m8-up sized screws, standard 8” shaft length.
    $ 24.95



    HCP21135 Aftermarket size #2 JIS-standards IMPACT SCREWDRIVER, for m3-m5 sized screws, standard 4” shaft length.
    $ 27.95

    HCP21136 Aftermarket size #3 JIS-standards IMPACT SCREWDRIVER, for m6-m8 sized screws, standard 6” shaft length.
    $ 29.95



    HCP23600 Aftermarket size #0 JIS-standards SHORT SCREWDRIVER BIT , for m2 and smaller size screws. This 1” long bit fits in any standard 1/4” bit holder.
    $ 4.95

    HCP23601 Aftermarket size #1 JIS-standards SHORT SCREWDRIVER BIT , for m2-m4 size screws. This 1” long bit fits in any standard 1/4” bit holder.
    $ 4.95


    HCP23602 Aftermarket size #2 JIS-standards SHORT SCREWDRIVER BIT , for m3-m5 size screws. This 1” long bit fits in any standard 1/4” bit holder.
    $ 4.95

    HCP28218 Aftermarket size #2 JIS-standards LONG SCREWDRIVER BIT , for m3-m5 size screws. This 3” long bit fits in any standard 1/4” bit holder.
    $ 6.95


    HCP23603 Aftermarket size #3 JIS-standards SHORT SCREWDRIVER BIT, for m6-m8 size screws. This 1” long bit fits in any standard 1/4” bit holder.
    $ 4.95

    HCP28220 Aftermarket size #3 JIS-standards LONG SCREWDRIVER BIT, for m6-m8 size screws. This 3” long bit fits in any standard 1/4” bit holder.
    $ 6.95



    HCP28224 Aftermarket JIS-standards SHORT SCREWDRIVER BITS SET, contains one each of the #0, #1, #2, and #3 size short (1” long) bits.
    $ 17.95

    HCP28225 Aftermarket JIS-standards LONG SCREWDRIVER BITS SET, contains one each of the #2 and #3 size (3” long) bits.
    $ 12.95

    HCP28226 Aftermarket JIS-standards COMPLETE SCREWDRIVER BITS SET, contains a complete set of short and long bits: one each of the #0, #1, #2, and #3 short bits, and one each of the #2 and #3 size long bits.
    $ 27.95




    Throttle Shaft Hardware:

    v5) Aftermarket Hitachi throttle shaft BUTTERFLY VALVE MOUNTING SCREW. Each round aluminum butterfly "valve" is held to the steel throttle shaft via two tiny phillips head screws. The throttle shaft has self-locking threads which makes the removal of these screws both a chore and usually results in a buggered phillips head slot. These replacement screws come in a variety of materials and drive styles. Use 2 per carb on all HSC32/33/40 series carbs.

    And if you’re so unfortunate to have buggered the threads on the shaft, you might be able to rescue the threads on the throttle shafts by re-tapping the holes with this tap:

    HCP6336 THREAD CHASER AND CLEAN-UP TAP, made from a high-speed uncoated steel. For the following holes:
    - all Hitachi and Mikuni throttle shafts where the butterfly valve screw on
    - all models petcock faceplate mounting screw holes.
    $ 9.95

    HCP28170 Aftermarket thread tap or EZ-out extractor TAP HANDLE, featuring offset tap handles and fully adjustable head for all m3-m12 size taps and size 0 to ½” extractors. This is the proper way to hold a tap or extractor to insure that the force is directed straight down and doesn’t “wobble” as you are cutting, reaming, or extracting. Much better than using pliers or vise-grips to hold the tool……..
    $ 17.95


    If the threads are too damaged, then we offer these problem-solver kits that contain a longer screw and special ultra-thin nut:

    HCP26994SET Aftermarket Hitachi butterfly valve “problem-solver” MOUNTING SCREW & NUT SET, panhead 18-8 stainless steel screw, phillips-drive. This longer-than-stock screw and matching thin nut allows you to salvage a throttle shaft which has damaged, stripped, or missing threads…..the longer reach of the threads clears the back side of the throttle shaft and allows the nut to secure the valve to the shaft. NOTE: the threads in the throttle shaft should be drilled out using our HCP26993 oversize drill bit, to remove any damaged threads and to slightly enlarge the hole, allowing the replacement screw to pass through the throttle shaft without engaging the shaft. NOTE: you must use thread-locking fluid HCP1266 when installing this fastener! For use on Hitachi carbs as used on all XJ650 (except Turbo), 1985-86 XJ700 air-cooled -models, and all 1981-84 XJ750 air-cooled models. This set contain one screw and one nut, enough to repair one damaged hole. You will need to order 2 sets to repair both holes in a single throttle shaft.
    $ 2.95

    HCP26994SET8 Aftermarket Hitachi butterfly valve “problem-solver” MOUNTING SCREW & NUT SETS, panhead 18-8 stainless steel screw, phillips-drive. Contains 8 screws and 8 nuts.
    $ 14.95

    HCP26993 Aftermarket throttle shaft screw OVERSIZE DRILL BIT allows you to remove damaged threads and slightly enlarge the screw hole in damaged throttle shafts so that our problem-solver screws can be used. 1/8” shank. For use with all Mikuni and Hitachi models.
    $ 9.95

    HCP1266 Low Strength THREAD LOCKER FLUID, 6ml squeeze tube. This is a semi-permanent formula that provides moderate vibration-loosening resistance, while still allowing for easy disassembly of the fastener with hand tools. This formula is recommended for upper and lower carb rack mount screws and the butterfly valve-to-throttle shaft retaining screws. A little bit goes a long way.......
    $ 11.95



    HCP26994KIT Aftermarket Hitachii butterfly valve “problem-solver” MOUNTING SCREW & NUT SETS, contains 8 of the HCP26991 screw and nut sets, a tube of the HCP1266 low-strength locker fluid, and the HCP26993 drill bit. This kit has enough parts to repair 8 damaged shaft holes.
    $ 24.95



    all of the following screws are for use on throttle shafts with undamaged threads :

    Unless you have reasons for doing otherwise, we recommend upgrading the butterfly valve retaining screws to the 18-8 stainless steel HCP2561 button head hex-key style-----they are more durable than stock phillips headed plain steel, and much easier to remove in the future if the need ever arises. NOTE: SAE style panhead screws are standard-design phillips-drive fasteners, while the JIS type panhead screws are Japanese Industrial Standard design screws, which use a JIS drive (a better design than a true "phillips" cross), and are what was used originally on these carbs. Besides the difference in the drive slot, JIS screws are smaller in head diameter and in head height.


    HCP1347 Aftermarket Hitachi butterfly valve retaining SCREWS, SAE panhead alloy steel phillips-drive screw, each:
    $ 1.00

    HCP1347SET2 Aftermarket Hitachi butterfly valve retaining SCREWS, SAE panhead alloy steel phillips-drive screw, set of 2:
    $ 1.75

    HCP1347SET4 Aftermarket Hitachi butterfly valve retaining SCREWS, SAE panhead alloy steel phillips-drive screw, set of 4:
    $ 3.25

    HCP1347SET8 Aftermarket Hitachi butterfly valve retaining SCREWS, SAE panhead alloy steel phillips-drive screw, set of 8:
    $ 6.50



    HCP14241 Aftermarket Hitachi butterfly valve retaining SCREWS, JIS panhead alloy steel phillips-drive screw, each:
    $ 1.50

    HCP14241SET2 Aftermarket Hitachi butterfly valve retaining SCREWS, JIS panhead alloy steel phillips-drive screw, set of 2:
    $ 2.75

    HCP14241SET4 Aftermarket Hitachi butterfly valve retaining SCREWS, JIS panhead alloy steel phillips-drive screw, set of 4:
    $ 5.25

    HCP14241SET8 Aftermarket Hitachi butterfly valve retaining SCREWS, JIS panhead alloy steel phillips-drive screw, set of 8:
    $ 9.95



    HCP1348 Aftermarket Hitachi butterfly valve retaining SCREW, SAE panhead 18-8 stainless steel phillips-drive screw , each:
    $ 1.50

    HCP1348SET2 Aftermarket Hitachi butterfly valve retaining SCREWS, SAE panhead 18-8 stainless steel phillips-drive screw, set of 2:
    $ 2.75

    HCP1348SET4 Aftermarket Hitachi butterfly valve retaining SCREWS, SAE panhead 18-8 stainless steel phillips-drive screw, set of 4:
    $ 5.25

    HCP1348SET8 Aftermarket Hitachi butterfly valve retaining SCREWS, SAE panhead 18-8 stainless steel phillips-drive screw, set of 8:
    $ 9.95



    HCP14242 Aftermarket Hitachi butterfly valve retaining SCREW, JIS panhead 18-8 stainless steel phillips-drive screw, JIS phillips drive slot, each:
    $ 2.25

    HCP14242SET2 Aftermarket Hitachi butterfly valve retaining SCREWS, JIS panhead 18-8 stainless steel phillips-drive screw, set of 2:
    $ 4.25

    HCP14242SET4 Aftermarket Hitachi butterfly valve retaining SCREWS, JIS panhead 18-8 stainless steel phillips-drive screw, set of 4:
    $ 7.95

    HCP14242SET8 Aftermarket Hitachi butterfly valve retaining SCREWS, JIS panhead 18-8 stainless steel phillips-drive screw, set of 8:
    $ 13.95



    HCP1349 Aftermarket Hitachi butterfly valve retaining SCREW, low-profile hex-drive sockethead screw made from 18-8 stainless steel, each:
    $ 1.50

    HCP1349SET2 Aftermarket Hitachi butterfly valve retaining SCREWS, low-profile hex-drive sockethead screw made from 18-8 stainless steel, set of 2:
    $ 2.75

    HCP1349SET4 Aftermarket Hitachi butterfly valve retaining SCREWS, low-profile hex-drive sockethead screw made from 18-8 stainless steel, set of 4:
    $ 5.25

    HCP1349SET8 Aftermarket Hitachi butterfly valve retaining SCREWS, low-profile hex-drive sockethead screw made from 18-8 stainless steel, set of 8:
    $ 9.95



    HCP2561 Aftermarket Hitachi butterfly valve retaining SCREW, low-profile hex-drive buttonhead screw made from 18-8 stainless steel, each:
    $ 1.50

    HCP2561SET2 Aftermarket Hitachi butterfly valve retaining SCREWS, low-profile hex-drive buttonhead screw made from 18-8 stainless steel, set of 2:
    $ 2.75

    HCP2561SET4 Aftermarket Hitachi butterfly valve retaining SCREWS, low-profile hex-drive buttonhead screw made from 18-8 stainless steel, set of 4:
    $5.25

    HCP2561SET8 Aftermarket Hitachi butterfly valve retaining SCREWS, low-profile hex-drive buttonhead screw made from 18-8 stainless steel, set of 8:
    $ 9.95




    ts5) Hitachi HSC32 and 33 series carb THROTTLE SHAFT RETAINER E-CLIP...these shaft retainer clips go directly "outside" of the plastic shim washers listed above on the #1 and #4 carbs only. Used on all XJ650 except Turbo, all XJ700 non-X, all XJ750 air-cooled, and all Virago models using HSC40 series carbs.


    HCP6836 OEM Hitachi throttle shaft end retaining E-CLIP, bright plated spring steel, each:
    $ 6.95

    HCP6836SET2 OEM Hitachi throttle shaft end retaining E-CLIPS, set of 2:
    $ 11.95


    HCP905 Aftermarket Hitachi throttle shaft end retaining E-CLIP, black-phosphate coated spring steel as original, each:
    $ 3.95

    HCP905SET2 Aftermarket Hitachi throttle shaft end retaining E-CLIPS, set of 2:
    $ 6.95


    HCP2909 Aftermarket Hitachi throttle shaft end retaining E-CLIP, type 420 stainless spring steel, each:
    $ 4.95

    HCP2909SET2 Aftermarket Hitachi throttle shaft end retaining E-CLIPS, set of 2:
    $ 8.95




    bbb) Aftermarket Hitachi HSC32/33 series carb THROTTLE SHAFT SEAL PLASTIC SHIM WASHER...these washers go directly "outside" of the HCP6838B or the HCP38B shaft seals listed above. Same notes as listed above about the seals (regarding the ease of replacement) also applies to these shims. NOTE: although these shims do not "wear out" like the seals do, you should replace them if your washers are cracked, broken or missing.

    On the HSC32, carbs #1, #2, and #4 use 2 shims per carb, and the #3 carb uses only 1 shim. Thus, on HSC32 model carbs, there are a total of 7 shims used per entire carb rack.

    On HSC33 models, carbs #1 and #4 used 2 shims per carb, the #2 carb uses only 1 shim, and the #3 carb uses none of these shims. Thus on HSC33 model carbs, there are a total of 5 shims used per entire carb rack.

    The HSC40 series carbs use 2 per carb, or a total of 4 per engine.


    HCP3991 Aftermarket Hitachi throttle shaft seal SHIM WASHER, each:
    $ 3.95

    HCP3991SET2 Aftermarket Hitachi throttle shaft seal SHIM WASHERS, pair:
    $ 6.95

    HCP3991SET4 Aftermarket Hitachi throttle shaft seal SHIM WASHERS, pair:
    $ 11.95

    HCP3991SET5 Aftermarket Hitachi throttle shaft seal SHIM WASHERS, set of 5 shims:
    $ 14.95

    HCP3991SET8 Aftermarket Hitachi throttle shaft seal SHIM WASHERS, set of eight shims:
    $ 17.95




    bbb6) Aftermarket Hitachi HSC32/33 series carb THROTTLE SHAFT PLASTIC SPACER BUSHINGS. These hard plastic spacers are used on the "inner" (left) side of the #3 carb only (it is normally hidden underneath the #3 carb throttle shaft return spring) on both the HSC32 and HSC33 model carbs, and on the "outer" side of the #2 and the #3 carbs on HSC33 models only. NOTE: these spacer do not "wear out" like the throttle shaft seals do, and you should only replace them if your original spacers are cracked, broken, worn or missing.

    HCP6323 Aftermarket Hitachi #3 carb throttle shaft INNER SPACER BUSHING, use 1 per #3 carb on the inner side on both HSC32 and HSC33 carb models.
    $ 11.95

    HCP13648 Aftermarket Hitachi #2 and #3 carb throttle shaft OUTER SPACER BUSHING, use 1 per carb on both the #2 and the #3 carb on the outer side on HSC33 carb models only. Each:
    $ 9.95




    ts55) Aftermarket Hitachi HSC32 and 33 series carb THROTTLE SHAFT BRACKET RETAINER NUT and LOCKWASHER......used to secure the end bracket to the throttle shafts on the #2 and #3 carb only. For use on all XJ650 except Turbo, all XJ700 non-X, and all XJ750 air-cooled models.

    HCP16805 Aftermarket throttle shaft end bracket retaining NUT, use 1 per shaft on both the #2 and the #3 carbs. Special thin nut is made from 18/8 stainless steel and has a bright finish. NOTE: the original nut is a 12mm hex; these are 13mm but will fit and work just fine. Each:
    $ 2.95


    HCP2185 OEM throttle shaft end bracket retaining nut LOCK WASHER, use 1 per shaft on both the #2 and the #3 carbs. Made from 18/8 stainless steel and has a bright finish. Each:
    $ 1.95

    HCP16209 Aftermarket throttle shaft end bracket retaining nut LOCK WASHER, use 1 per shaft on both the #2 and the #3 carbs. Made from zinc-plated alloy steel and has a bright finish. Each:
    $ 0.95

    HCP16100 Aftermarket throttle shaft end bracket retaining nut LOCK WASHER, use 1 per shaft on both the #2 and the #3 carbs. Made from 18-8 stainless-steel and has a bright finish. Each:
    $ 0.95

    HCP16102 Aftermarket throttle shaft end bracket retaining nut LOCK WASHER, use 1 per shaft on both the #2 and the #3 carbs. Made from alloy steel and has a black-oxide coated finish. Each
    $ 0.95



    ts67) Aftermarket Hitachi HSC32 and HSC33 series carb THROTTLE SHAFTS and END BRACKETS......these re-plated throttle shafts and the #2 and #3 carb (only) shaft end brackets are a great way to restore that brand-new look to your carb kit. For use on all XJ650 except Turbo, all XJ700 non-X, and all XJ750 air-cooled models. Correct yellow-zinc plated brackets. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft or bracket.

    HCP903RP OEM re-plated original THROTTLE SHAFT, complete with its swaged (non-removable) shaft end bracket. Fits the #1 carb on all XJ650 (except Turbo), all XJ700 non-X, and all XJ750 air-cooled models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft. Each:
    $ 29.95 + $ 25.00 refundable core charge


    HCP37RP OEM re-plated original THROTTLE SHAFT, complete with its swaged (non-removable) shaft end bracket. Fits the #2 carb on all XJ650 models (except Turbo) and all XJ750 air-cooled models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft. Each:
    $ 34.95 + $ 25.00 refundable core charge

    HCP13646RP OEM re-plated original THROTTLE SHAFT, complete with its swaged (non-removable) shaft end bracket. Fits the #2 carb on all XJ700 air-cooled models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft. Each:
    $ 39.95 + $ 25.00 refundable core charge

    HCP2601RP OEM re-plated original throttle shaft END BRACKET, attaches to the threaded end of the #2 carb on all XJ650 (except Turbo), all XJ700 non-X, and all XJ750 air-cooled models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft end bracket. Each:
    $ 19.95 + $ 25.00 refundable core charge


    HCP1941RP OEM re-plated original THROTTLE SHAFT, complete with its swaged (non-removable) shaft end bracket. Fits the #3 carb on all XJ650 models (except Turbo) and all XJ750 air-cooled models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft. Each:
    $ 34.95 + $ 25.00 refundable core charge

    HCP13645RP OEM re-plated original THROTTLE SHAFT, complete with its swaged (non-removable) shaft end bracket. Fits the #3 carb on all XJ700 air-cooled models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft. Each:
    $ 39.95 + $ 25.00 refundable core charge

    HCP2600RP OEM re-plated original throttle shaft PIVOTING END BRACKET, attaches to the threaded end of the #3 carb on all XJ650 (except Turbo), all XJ700 non-X, and all XJ750 air-cooled models. This is the articulated bracket that the throttle cable attaches to. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft end bracket. Each:
    $ 29.95 + $ 25.00 refundable core charge


    HCP1942RP OEM re-plated original THROTTLE SHAFT, complete with its swaged (non-removable) shaft end bracket. Fits the #4 carb on all XJ650 (except Turbo), all XJ700 non-X, and all XJ750 air-cooled models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft. Each:
    $ 29.95 + $ 25.00 refundable core charge



    HCP24047 OEM re-plated original THROTTLE SHAFTS and BRACKETS KIT, contains all four throttle shafts and their removable end brackets (for the #2 and #3 carb shafts). Fits all XJ650 models (except Turbo) and all XJ750 air-cooled models. NOTE: requires a $ 95.00 core charge, refundable upon the return of all four undamaged, same-model, same-carb shafts and their two end brackets. Each:
    $ 119.95 + $ 95.00 refundable core charge

    HCP24048 OEM re-plated original THROTTLE SHAFTS and BRACKETS KIT, contains all four throttle shafts and their removable end brackets (for the #2 and #3 carb shafts). Fits all XJ700 air-cooled models. NOTE: requires a $ 95.00 core charge, refundable upon the return of all four undamaged, same-model, same-carb shafts and their two end brackets. Each:
    $ 139.95 + $ 95.00 refundable core charge




    HITACHI BUTTERFLY VALVE SYNCH SCREWS HARDWARE:

    ts37) The closed position of the individual throttle plate "butterfly" valves is controlled via a fine-threaded, spring-loaded SYNCH SCREW.........these are the actual screws that are adjusted when performing a "running synch" on the engine.

    http://www.xjbikes.com/forums/threads/running-sync-screw-in-or-out-that-is-the-question.75716/

    Our re-plated Hitachi synch SCREWS, SPRINGS, and PLUNGER RODS allow you to re-create the original look and beauty of these carb racks. These parts are available re-plated to their correct original yellow-zinc appearance. If you need to replace any missing hardware, or just want to create a show-winning look, then you should start your shopping list here! NOTE: all synch hardware pieces are re-plated, used parts, and as such, may have minor cosmetic flaws (tooling marks, fastener marks, etc.). Most such marks will not be visible once installed. Also, all re-plated items require a refundable core charge which will be credited back to you once you return a same-model, same-type of item(s)as you purchased. Since these are re-plated used parts, we do require an exchange for your original parts so we can have a steady supply of parts to be processed and re-plated for future sales.


    HCP14204 OEM throttle valve adjuster SYNCH SCREW AND SPRING SET, use 1 per carb on the #1, #2, and #4 carb (the #3 carb does not use a synch screw). Fits all XJ650 (except Turbo), all air-cooled XJ700 non-X, and all air-cooled XJ750 engines with Hitachi carbs. Each set contains two springs and one screw (the thin-wire spring is for the screw; the thick-wire spring if for the plunger rod). Plunger rod is not included. NOTE: this replacement screw uses a straight slot instead of the original phillips-drive head.
    $ discontinued

    HCP47RP OEM re-plated throttle valve adjuster SYNCH SCREW, use 1 per carb on the #1, #2, and #4 carb (the #3 carb does not use a synch screw). Fits all XJ650 (except Turbo), all air-cooled XJ700 non-X, and all air-cooled XJ750 engines with Hitachi carbs. Correct yellow-zinc plated screw has the captive lockwasher and phillips-drive head. NOTE: requires a $ 5.00 core charge, refundable upon the return of an undamaged, same-model, same-type screw.
    Each:
    $ 9.95 + $ 5.00 refundable core charge

    HCP45RP OEM re-plated throttle valve adjuster SYNCH SCREW SPRING, use 1 per carb on the #1, #2, and #4 carb (the #3 carb does not use a synch screw). Fits all XJ650 (except Turbo), all air-cooled XJ700 non-X, and all air-cooled XJ750 engines with Hitachi carbs. Correct yellow-zinc plated spring fits the HCP47RP screw above. NOTE: requires a $ 4.00 core charge, refundable upon the return of an undamaged, same-model, same-type spring.
    Each:
    $ 8.95 + $ 4.00 refundable core charge


    HCP46ARP OEM re-plated throttle valve adjuster SYNCH PLUNGER ROD, use 1 per carb on the #1, #2, and #4 carb (the #3 carb does not use a synch screw system). Fits all XJ650 (except Turbo), all air-cooled XJ700 non-X, and all air-cooled XJ750 engines with Hitachi carbs. Correct yellow-zinc plated plunger rod fits into the “lower” section of the throttle arms. NOTE: requires a $ 5.00 core charge, refundable upon the return of an undamaged, same-model, same-type rod.
    Each:
    $ 11.95 + $ 5.00 refundable core charge

    HCP46BRP OEM re-plated throttle valve adjuster PLUNGER ROD SPRING, use 1 per carb on the #1, #2, and #4 carb (the #3 carb does not use a synch screw). Fits all XJ650 (except Turbo), all air-cooled XJ700 non-X, and all air-cooled XJ750 engines with Hitachi carbs. Correct yellow-zinc plated spring fits the HCP46ARP rod above. NOTE: requires a $ 4.00 core charge, refundable upon the return of an undamaged, same-model, same-type spring.
    Each:
    $ 8.95 + $ 4.00 refundable core charge



    If the threaded holes in the throttle shaft brackets (where the synch screws are fitted) are overly tight, you may want to clean ("chase") the threads so you get a like-new feel to them:

    HCP28202 Aftermarket THREAD CHASER AND CLEAN-UP TAP, made from a high-speed titanium nitride coated steel. For the following holes: Mikuni and Hitachi synch screw threads in the throttle shaft brackets, and Mikuni and Hitachi idle speed bolt threads in lower rack bracket.
    $ 12.95

    HCP28170 Aftermarket thread tap or EZ-out extractor TAP HANDLE, featuring offset tap handles and fully adjustable head for all m3-m12 size taps and size 0 to ½” extractors. This is the proper way to hold a tap or extractor to insure that the force is directed straight down and doesn’t “wobble” as you are cutting, reaming, or extracting. Much better than using pliers or vise-grips to hold the tool……..
    $ 17.95





    v5) Aftermarket Hitachi throttle shaft BUTTERFLY VALVE MOUNTING SCREW. Each round aluminum butterfly "valve" is held to the steel throttle shaft via two tiny phillips head screws. The throttle shaft has self-locking threads which makes the removal of these screws both a chore and usually results in a buggered phillips head slot. These replacement screws come in a variety of materials and drive styles. Use 2 per carb on all HSC32/33/40 series carbs.

    And if you’re so unfortunate to have buggered the threads on the shaft, you might be able to rescue the threads on the throttle shafts by re-tapping the holes with this tap:

    HCP6336 THREAD CHASER AND CLEAN-UP TAP, made from a high-speed uncoated steel. For the following holes:
    - all Hitachi and Mikuni throttle shafts where the butterfly valve screw on
    - all models petcock faceplate mounting screw holes.
    $ 9.95

    HCP28170 Aftermarket thread tap or EZ-out extractor TAP HANDLE, featuring offset tap handles and fully adjustable head for all m3-m12 size taps and size 0 to ½” extractors. This is the proper way to hold a tap or extractor to insure that the force is directed straight down and doesn’t “wobble” as you are cutting, reaming, or extracting. Much better than using pliers or vise-grips to hold the tool……..
    $ 17.95


    If the threads are too damaged, then we offer these problem-solver kits that contain a longer screw and special ultra-thin nut:

    HCP26994SET Aftermarket Hitachi butterfly valve “problem-solver” MOUNTING SCREW & NUT SET, panhead 18-8 stainless steel screw, phillips-drive. This longer-than-stock screw and matching thin nut allows you to salvage a throttle shaft which has damaged, stripped, or missing threads…..the longer reach of the threads clears the back side of the throttle shaft and allows the nut to secure the valve to the shaft. NOTE: the threads in the throttle shaft should be drilled out using our HCP26993 oversize drill bit, to remove any damaged threads and to slightly enlarge the hole, allowing the replacement screw to pass through the throttle shaft without engaging the shaft. NOTE: you must use thread-locking fluid HCP1266 when installing this fastener! For use on Hitachi carbs as used on all XJ650 (except Turbo), 1985-86 XJ700 air-cooled -models, and all 1981-84 XJ750 air-cooled models. This set contain one screw and one nut, enough to repair one damaged hole. You will need to order 2 sets to repair both holes in a single throttle shaft.
    $ 2.95



    HITACHI IDLE - PILOT MIXTURE SCREW PARTS:

    NOTE: idle mixture screws are also referred to as "pilot mixture screws" or "pilot screws".

    If you've never delved into the guts of your carburetor idle mixture screw port, it can sometimes be confusing. Here's the playbook for this critical area:

    If we were looking at a cut-away of the carb body/idle mixture screw bore, the order of parts, from bottom to top, would be:

    a) HCP895 o-ring
    b) HCP896 spring seat washer
    c) HCP6573 tension spring
    d) the idle mixture screw
    e) the anti-tamper cap.

    What is mostly confusing is the order of the o-ring versus the spring seat washer....which goes in the hole first? The answer is that the HCP895 O-ring does. The HCP896 washer primarily acts as the lower "seat" for the HCP6573 tension spring, while also keeping the o-ring firmly and securely in place.


    NOTE: if you come across a stuck, seized, or otherwise so badly damaged screw that just won't come out, then here is the best advice that we can offer to deal with it:

    http://xjbikes.com/forums/index.php?threads/32017



    ims83) Aftermarket replacement IDLE MIXTURE SCREWS (sometimes referred to as pilot screws, or pilot mixture screws, or "those stripped out things in that hole up front"), for all Hitachi HSC-32 and -33 series carbs as used on XJ650 (except Turbo), all XJ750 Maxim and Seca models, and XJ700 non-X (air-cooled) carbs. Correct reproduction screws are available in the original styles to exactly replace damaged, stripped, or missing originals.

    The original screws were available in three versions:

    a) Alloy steel, with coarse-pitch threads, used on 1980-81 XJ650 Maxim and Midnight Maxim model carbs. The best description I can give for "coarse" threads is that the threads are sized much like you would see on a standard screw (like the carb bowl drain screws, etc.).....the threads are rather "wide apart". This is in contrast to..........

    b) Alloy steel, with ultra-fine-pitch threads, used on 1982-up XJ650 models with Hitachi carbs, all XJ750 Maxim and Seca models, and possibly on early model XJ700 non-X Hitachi HSC33 series carbs. Ultra-fine thread pitch looks like screw threads used on some kind of jeweler's or watchmaker's incredibly-closely-spaced threads.

    c) Brass, with ultra-fine-pitch threads, used only in XJ700 non-X Hitachi HSC33 series carbs.


    Note that the determination of which style screw YOUR carbs have can vary from what MODEL AND YEAR bike you have, as someone may have switched a carb body, an entire rack of carbs, or due to original mass-production and supplier differences and timing of production.

    ALL ORIGINAL HITACHI IDLE MIXTURE SCREWS ARE IDENTICAL AS TO FUNCTION AND DIFFER ONLY BY THEIR THREAD PITCH (coarse versus ultra-fine) AND THE MATERIAL THEY WERE MADE OF (alloy steel versus brass). Owners of carbs with the ultra fine-pitch threaded screws CANNOT use coarse-thread pitch screws, and vice-versa.

    A visual identification of the different thread pitches can be seen at:

    http://www.xjbikes.com/forums/threa...fference-between-coarse-and-fine-thread.80399

    and

    http://www.xjbikes.com/forums/threads/easy-carb-tuning-question.93762/#post-522499

    Or, you can count threads:
    - coarse-pitch mixture screws have a total of 5 threads.
    - ultra-fine-pitch mixture screws have a total of 7-8 threads.

    However, owners of carbs with the (much more common) ultra-fine pitch threaded bores and screws can use either the steel or brass screws interchangeably----although we recommend sticking with one or the other in a full rack of carbs.


    Why did Hitachi change from using coarse thread (1980-81) to fine-threaded screws? Who knows, but it probably has something to do with the fineness of the adjustability needed for these precision mixture screws.....a fine-threaded screw offers a much more precise level of fine-tuning adjustability than a coarse-threaded screw does ("coarse-pitch" screws move the screw further along it's bore for each given amount of turning, so a 1/4-revolution turn of a coarse-pitch screw will move that screw FURTHER up or down in its bore than the same 1/4-revolution turn will move a fine-pitched screw).

    Thus the standard advice of using the 2.5-to-3 turns out (from bottoming) as a "starting point" for the idle mixture screw setting is really based on the use of the fine-pitched screws; the earlier coarse-pitch screws would need to be initially set at about 1.5-to-2 turns out as an initial starting point.

    More questions from the audience: Why did Hitachi change from using steel screws (most 1980-83 model carbs) to brass screws (1985-86 models)? Who knows, but it was either a cost saving measure (brass is not normally cheaper than steel, but it is much easier to machine precisely), or, given how these screws are known for seizing up in their bores, perhaps it was to provide a material that was not as susceptible to seizure (such as brass).

    Either way, since you will be using some anti-seize fluid when installing your new screw (or even when re-using your old screws during a rebuild), this is not really an issue any more. Right? RIGHT? I mean, you WILL use anti-seize, won't you?

    These idle mixture screws are exact reproductions of the originals, with the original straight-blade screw head, and are available in either the coarse-pitch in a Type 304 stainless steel material (instead of the original alloy steel), or in the fine pitch versions----and the fine pitch versions are available in either a Type 304 stainless steel material (instead of the original alloy steel) or screw-grade Brass.


    Coarse-threaded Idle Mixture Screws:

    HCP8392 Aftermarket Hitachi stainless steel IDLE MIXTURE SCREW with coarse threads, for all Hitachi HSC32 carbs with coarse threads in the idle mixture bore holes. Normally found on 1980-81 XJ650 models, but this "rule" may vary, so check your original screws or carb bore threads before ordering. Each:
    $ 16.95

    HCP8392SET4 Aftermarket Hitachi stainless steel IDLE MIXTURE SCREWS with coarse threads, set of 4:
    $ 59.95



    HCP8392KIT Aftermarket Hitachi stainless steel IDLE MIXTURE SCREW KIT with coarse threads, complete with one each of an HCP8392 stainless steel mixture screw, an HCP895 o-ring, the HCP6573 tension spring, and the HCP896 tension spring seat washer. Does one carb:
    $ 19.95

    HCP8392KIT4 Aftermarket Hitachi stainless steel IDLE MIXTURE SCREW KITS with coarse threads, set of 4 does one entire rack of carbs:
    $ 69.95




    HCP16592 Aftermarket Hitachi brass IDLE MIXTURE SCREW with coarse threads, for all Hitachi HSC32 carbs with coarse threads in the idle mixture bore holes. Coarse-threaded brass mixture screws were never originally used in Hitachi carbs, but these aftermarket versions are available for use on the 1980-81 XJ650 models that use coarse-threaded mixture screws. Each:
    $ 21.95

    HCP165922SET4 Aftermarket Hitachi brass IDLE MIXTURE SCREWS with coarse threads, set of 4:
    $ 79.95



    HCP16592KIT Aftermarket Hitachi brass IDLE MIXTURE SCREW KIT with coarse threads, complete with one each of an HCP8392 stainless steel mixture screw, an HCP895 o-ring, the HCP6573 tension spring, and the HCP896 tension spring seat washer. Does one carb:
    $ 27.95

    HCP165922KIT4 Aftermarket Hitachi brass IDLE MIXTURE SCREW KITS with coarse threads, set of 4 does one entire rack of carbs:
    $ 89.95




    Fine-threaded Idle Mixture Screws:

    HCP8393 Aftermarket Hitachi stainless steel IDLE MIXTURE SCREW with ultra-fine threads, for all Hitachi HSC32 and HSC33 series carbs with fine threads in the idle mixture bore holes. Normally found on 1982-84 XJ650 models and all XJ750 air-cooled models, but those "rules" may vary, so check your original screws or carb bore threads before ordering. Each:
    $ 16.95

    HCP8393SET4 Aftermarket Hitachi stainless steel IDLE MIXTURE SCREWS with ultra-fine threads, set of 4:
    $ 59.95



    HCP8393KIT Aftermarket Hitachi stainless steel IDLE MIXTURE SCREW KIT with ultra-fine threads, complete with one each of an HCP8393 stainless steel mixture screw, an HCP895 o-ring, the HCP6573 tension spring, and the HCP896 tension spring seat washer. Does one carb:
    $ 19.95

    HCP8393KIT4 Aftermarket Hitachi stainless steel IDLE MIXTURE SCREW KITS with ultra-fine threads, set of 4 does one entire rack of carbs:
    $ 74.95





    HCP8394 Aftermarket Hitachi brass IDLE MIXTURE SCREW with ultra-fine threads, for all Hitachi HSC32 and HSC33 series carbs with fine threads in the idle mixture bore holes. Sometimes found on original 1983 XJ650 and XJ750 carbs, and always used on 1985-86 XJ700 non-X (air-cooled) models, but these "rules" may vary, so check your original screws or carb bore threads before ordering. Each:
    $ 16.95

    HCP8394SET4 Aftermarket Hitachi brass IDLE MIXTURE SCREWS with ultra-fine threads, set of 4:
    $ 62.95



    HCP8394KIT Aftermarket Hitachi brass IDLE MIXTURE SCREW KIT with ultra-fine threads, complete with one each of an HCP8394 brass mixture screw, an HCP895 o-ring, the HCP6573 tension spring, and the HCP896 tension spring seat washer. Does one carb:
    $ 22.95

    HCP8394KIT4 Aftermarket Hitachi brass IDLE MIXTURE SCREW KITS with ultra-fine threads, set of 4 does one entire rack of carbs:
    $ 79.95



    ddd) Aftermarket Hitachi IDLE MIXTURE SCREW O-RING.....a "must-replace" item when rebuilding your carbs. Made of long-lasting, fuel-resistant Buna-N material.

    HCP895 Aftermarket Hitachi idle mixture screw O-RING, fits all Hitachi HSC32 and HSC33 model carbs as used on all XJ650 (except Turbo), XJ700 non-X, and all XJ750 air-cooled models, each:
    $ 2.95

    HCP895SET4 Aftermarket Hitachi idle mixture screw O-RINGS, set of 4:
    $ 7.95



    eee) Aftermarket Hitachi IDLE MIXTURE SCREW TENSION SPRING SEAT WASHER.....also a "must-replace" item when rebuilding your carbs. Made of long-lasting, fuel- and water-resistant 18-8 stainless steel material.

    HCP896 Aftermarket Hitachi idle mixture screw tension spring SEAT WASHER, fits all Hitachi HSC32 and HSC33 model carbs as used on all XJ650 (except Turbo), XJ700 non-X, and all XJ750 air-cooled models, each:
    $ 2.95

    HCP896SET4 Aftermarket Hitachi idle mixture screw tension spring SEAT WASHERS, set of 4:
    $ 8.95



    ims6) Aftermarket carb IDLE MIXTURE SCREW TENSION SPRING, brand new reproductions exactly replace damaged, rusted, or missing originals. High-strength carbon-steel coil springs have a baked yellow-zinc plating as original.

    HCP6573 Aftermarket idle mixture screw TENSION SPRING, fits all Hitachi HSC32 and HSC33 model carbs as used on all XJ650 (except Turbo), XJ700 non-X, and all XJ750 air-cooled models, each:
    $ 5.95

    HCP6573SET4 Aftermarket idle mixture screw TENSION SPRINGS, set of 4:
    $ 19.95




    HCP7376 Aftermarket Hitachi idle mixture screw bore hole RUBBER PLUG, tapered design with mushroom head allows repeated removal and re-use. NOTE: may be a slightly loose fit on some models; if so, use a small amount of gasket or rubber adhesive to secure firmly in place (just a thin smear will do). Waterproof and dustproof design keeps the screw away from dirt and moisture, while also allowing for easy removal for tuning purposes. A much better solution compared to the original metal anti-damper plugs! Fits all Hitachi HSC32 and HSC33 model carbs as used on all XJ650 (except Turbo), XJ700 non-X, and all XJ750 air-cooled models. Each:
    $ 4.50

    HCP7376SET4 Aftermarket Hitachi idle mixture screw bore hole RUBBER PLUGS, set of 4:
    $ 17.95



    HCP14731 Aftermarket Hitachi idle mixture screw bore hole RUBBER PLUG, tapered design with mushroom head allows repeated removal and re-use. NOTE: may be a slightly loose fit on some models; if so, use a small amount of gasket or rubber adhesive to secure firmly in place (just a thin smear will do). Bottom part of shaft may need to be trimmed short for a perfect fit. Waterproof and dustproof design keeps the screw away from dirt and moisture, while also allowing for easy removal for tuning purposes. Fits all Hitachi HSC32 and HSC33 model carbs as used on all XJ650 (except Turbo), XJ700 non-X, and all XJ750 air-cooled models. Each:
    $ 1.50

    HCP14731SET4 Aftermarket Hitachi idle mixture screw bore hole RUBBER PLUGS, set of 4:
    $ 5.95




    HCP2398 Aftermarket THREAD CHASER AND CLEAN-UP TAP, made from a high-speed uncoated steel. For use on all Mikuni idle mixture screw ports, and all Hitachi idle mixture screw ports with models using ultra-fine threaded idle mixture screws. NOTE: these threaded holes almost always need cleaning or re-tapping. Be careful when using these taps to make sure that you are cleaning and/or re-cutting the original threads, rather than any crossed/stripped threads that may be present. And beware the tiny needle tip hole at the bottom of the screw. Finally, note that the flat o-ring land (at the bottom of the screw hole) must not be damaged or gouged.......make sure that you do not run the tap in deep enough to damage that smooth land.
    $ 12.95

    HCP6335 THREAD CHASER AND CLEAN-UP TAP, made from a high-speed uncoated steel. For use on all Hitachi idle mixture screw ports, for models using coarse threaded idle mixture screws, and on all Mikuni carb bowl fuel drain screw ports. NOTE: these threaded holes almost always need cleaning or re-tapping.
    $ 12.95

    HCP28170 Aftermarket thread tap or EZ-out extractor TAP HANDLE, featuring offset tap handles and fully adjustable head for all m3-m12 size taps and size 0 to ½” extractors. This is the proper way to hold a tap or extractor to insure that the force is directed straight down and doesn’t “wobble” as you are cutting, reaming, or extracting. Much better than using pliers or vise-grips to hold the tool……..
    $ 17.95




    v) IDLE MIXTURE SCREW TOOL is designed for the proper removal and fine adjustment of the idle mixture screw, preventing the destruction of the fragile straight slot head on these screws. An exact-fit blade is set at the end of a 12” long shaft, and the screw driving bit is rotated via a handle on the end of tool....this design not only eliminates stripping out the idle mixture screw slot, but also allows for very fine adjustment of the screw when fine-tuning the carbs (when using a colortune plug, etc.). The long horizontal shaft allows you to easily reach the center carbs from the outside of the carb bank, no need to lift the tank to access them. A knurled section on the shaft provides for a positive grip. A very neat little tool and it'll last a lifetime or two. Fits: all XJ550 all, all XJ650, all XJ700, all XJ750, all XJ900, XJ1100, and all 1980-81 XS1100 carbs.

    HCP24870 Aftermarket idle mixture screw REMOVAL AND ADJUSTER TOOL, fits all Hitachi and all Mikuni idle mixture screws.
    $ 27.95




    HITACHI IDLE SPEED SCREW PARTS:

    Not to be confused with the idle MIXTURE screw listed above, the IDLE SPEED SCREW is the large knurled-head screw that lives dead center, at the bottom of the carb rack, in-between the #2 and #3 cars, and pointing straight back. This screw is used to adjust the idle speed of the engine, and has no effect on the idle mixture nor the carb (engine) "synch" settings!

    Our re-plated Hitachi idle speed adjustment SCREWS AND SPRINGS allow you to re-create the original look and beauty of these carb racks. These parts are available re-plated to their correct original yellow-zinc appearance. If you need to replace any missing hardware, or just want to create a show-winning look, then you should start your shopping list here! NOTE: all idle speed adjustment screws and springs are re-plated, used parts, and as such, may have minor cosmetic flaws (tooling marks, fastener marks, etc.). Most such marks will not be visible once installed. Also, all re-plated items require a refundable core charge which will be credited back to you once you return a same-model, same-type of item(s) as you purchased. Since these are re-plated used parts, we do require an exchange for your original parts so we can have a steady supply of parts to be processed and re-plated for future sales.


    HCP95RP OEM re-plated idle speed adjuster SCREW, use 1 per carb rack in-between the #3 and #4 carbs. Fits all XJ650 (except Turbo), all air-cooled XJ700 non-X, and all air-cooled XJ750 engines with Hitachi carbs. Correct yellow-zinc plated screw has the large knurled head. NOTE: requires a $ 15.00 core charge, refundable upon the return of an undamaged, same-model, same-type screw.
    Each:
    $ 29.95 + $ 15.00 refundable core charge

    HCP84RP OEM re-plated idle speed adjuster IDLE SPEED SCREW SPRING, use 1 per carb rack on the speed adjuster screw. Fits all XJ650 (except Turbo), all air-cooled XJ700 non-X, and all air-cooled XJ750 engines with Hitachi carbs. Correct yellow-zinc plated spring fits the HCP95RP screw above. NOTE: requires a $ 5.00 core charge, refundable upon the return of an undamaged, same-model, same-type spring.
    Each:
    $ 12.95 + $ 5.00 refundable core charge



    HCP9849 Aftermarket Hitachi idle speed screw rubber GROMMET, fits into the lower carb rack bracket opening where the idle speed screw enters the bracket. This replacement grommet is quite a bit larger than the stock grommet, but fits and works properly. Use a little bit of silicone grease on the screw's shaft where it passes through this grommet and it will be silky-smooth in operation. Fits all XJ650 (except Turbo), XJ700 non-X, and XJ750 models using Hitachi carbs.
    $ 1.95


    HCP4024 Aftermarket Hitachi carb idle speed screw WASHER, not an original part, but if you use a set of these thin flat plastic shimming washers in-between the spring and the screw, and between the spring and the bracket (in other words, on either end of the spring), it greatly reduces the friction between the two and makes the idle screw silky-smooth to adjust! Fits all XJ650 (except Turbo), XJ700 non-X, and XJ750 models using Hitachi carbs. Each:
    $ 1.95

    HCP4024SET2 Aftermarket Hitachi carb idle speed screw WASHERS, set of 2:
    $ 2.95



    If the threaded hole in the lower rack bracket (where the idle speed screw is fitted) is overly tight, you may want to clean ("chase") the threads so you get a like-new feel to them:

    HCP28202 Aftermarket THREAD CHASER AND CLEAN-UP TAP, made from a high-speed titanium nitride coated steel. For the following holes: Mikuni and Hitachi synch screw threads in the throttle shaft brackets, and Mikuni and Hitachi idle speed bolt threads in lower rack bracket.
    $ 12.95

    HCP28170 Aftermarket thread tap or EZ-out extractor TAP HANDLE, featuring offset tap handles and fully adjustable head for all m3-m12 size taps and size 0 to ½” extractors. This is the proper way to hold a tap or extractor to insure that the force is directed straight down and doesn’t “wobble” as you are cutting, reaming, or extracting. Much better than using pliers or vise-grips to hold the tool……..
    $ 17.95




    HITACHI CARB FUEL SUPPLY AND BOWL OVERFLOW T-FITTINGS, CONNECTOR TUBES, AND O-RINGS:

    mtz1) Aftermarket Hitachi fuel supply input T-FITTING AND OVERFLOW T-FITTINGS. The fuel inlet t-fitting is accepts the fuel line from the petcock and, via the connector tubes, "splits" the fuel flow to the other carbs for their incoming fuel supply. While the original inlet t-fittings are no longer available, our solid machined brass replacements use dual o-rings on each leg, and fit and seal as well or better than the originals.

    Bowl vent/overflow t-fittings are used only on the HSC33 series carbs (used on XJ700 air-cooled models and XJ750RL models only). These replacement overflow t-fittings are made from solid brass, and have machined grooves to accept dual rubber o-rings.

    HCP16327 Aftermarket Hitachi HSC32-series carbs brass fuel inlet T-FITTING, for use on all XJ650 (except Turbo) models, and all 1981-83 XJ750 models. These solid brass tee's include the o-rings on each "leg". Use 1 per carb rack, fitted between carbs #1 and #2. Each:
    $ 39.95

    HCP16329 Aftermarket Hitachi HSC33-series carbs brass fuel inlet T-FITTING, for use on all XJ700 air-cooled models and XJ750RL models. These solid brass tee's use dual o-rings (included) on each "leg" and thus fits and seals much better than the original fitting. Use 1 per carb rack, fitted between carbs #2 and #3. Each:
    $ 39.95


    HCP16328 Aftermarket brass fuel bowl vent/overflow T-FITTING, use 2 on all XJ700 air-cooled models and XJ750RL models in-between both the #1/2 and #3/4 carbs. Includes o-rings. These brass tee's fit and seal much better than the original fittings. Each:
    $ 36.95



    HCP90BR OEM brass fuel SUPPLY TUBE, use 1 each on all HSC32-series carbs as used on all XJ650 (except Turbo), XJ750 Maxim, 1981-83 XJ750 Seca and Euro models, and XJ750P (37H models) between the #2/3 carbs. Note that some models may have used aluminum (rather than brass) tubes originally. Sealing o-rings are included. NOTE: if replacements are ever needed, use o-ring HCP2420 or HCP2421 on these fittings. Each:
    $ discontinued

    HCP28462 brass fuel SUPPLY TUBE, use 1 each on all HSC32-series carbs as used on all XJ650 (except Turbo), XJ750 Maxim, 1981-83 XJ750 Seca and Euro models, and XJ750P (37H models) between the #2/3 carbs. Note that some models may have used aluminum (rather than brass) tubes originally. Sealing o-rings are included. NOTE: if replacements are ever needed, use o-ring HCP2420 or HCP2421 on these fittings. Each:
    $ 22.95


    HCP91BR OEM brass fuel SUPPLY TUBE, use 1 each on all HSC32-series carbs as used on all XJ650 (except Turbo), XJ750 Maxim, 1981-83 XJ750 Seca and Euro models, and XJ750P (37H models) between the #3/4 carbs. Note that some models may have used aluminum (rather than brass) tubes originally. Sealing o-rings are included. NOTE: if replacements are ever needed, use o-ring HCP2420 or HCP2421 on these fittings. Each:
    $ discontinued

    HCP28467 brass fuel SUPPLY TUBE, use 1 each on all HSC32-series carbs as used on all XJ650 (except Turbo), XJ750 Maxim, 1981-83 XJ750 Seca and Euro models, and XJ750P (37H models) between the #3/4 carbs. Note that some models may have used aluminum (rather than brass) tubes originally. Sealing o-rings are included. NOTE: if replacements are ever needed, use o-ring HCP2420 or HCP2421 on these fittings. Each:
    $ 22.95


    HCP3811BR OEM brass fuel SUPPLY TUBE, use 2 each on all HSC33-series carbs as used on all XJ700 air-cooled models and 1984 XJ750RL Seca (44X Canadian models) between the #1/2 and the #3/4 carbs. Note that some models may have used aluminum (rather than brass) tubes originally. Sealing o-rings are included. NOTE: if replacements are ever needed, use o-ring HCP2420 or HCP2421 on these fittings. Each:
    $ discontinued

    HCP28469 brass fuel SUPPLY TUBE, use 2 each on all HSC33-series carbs as used on all XJ700 air-cooled models and 1984 XJ750RL Seca (44X Canadian models) between the #1/2 and the #3/4 carbs. Note that some models may have used aluminum (rather than brass) tubes originally. Sealing o-rings are included. NOTE: if replacements are ever needed, use o-ring HCP2420 or HCP2421 on these fittings. Each:
    $ 23.95




    mmm1) OEM and Aftermarket Hitachi fuel supply t-fittings and connector tube O-RING.....all fours carbs share a common fuel supply, and this fuel supply is distributed to each carb via a brass or aluminum tube that connects one carb to another. These tubes fits into a machined bores in the carb base, and the tubes are sealed in their bores with these rubber o-rings. NOTE: original seals were "D-rings" rather than "O-rings", but are now serviced only as o-rings (both OEM and replacements), but are the correct shape and firmness to provide a leak-proof fit. You will only be able to access these seals if you break the carbs out of their rack! (and if you do break the rack, you need to replace these seals). Aftermarket seals comes in your choice of either a lower-cost Buna-N material, or a longer-life Viton material. Either one will work just fine and last until the next time you take your carbs apart!

    The viton material is much harder than the Buna-N material and the use of the viton seals requires quite a bit of effort to install the connector tube into the carb fuel port bores!

    - Use 2 seals per tube, or a total of 6 seals per entire carb rack, for HSC32 series carbs (XJ650 except Turbo, 1981-83 XJ750 all models).

    - Use 2 seals per tube, or a total of 10 seals per entire carb rack, for HSC33 series carbs (all XJ700 non-X and XJ750RL models). The same seals are used on both the fuel pipes and the carb overflow t-fittings.


    NOTE: make sure you clean the internal bore cavity (where the fuel pipes fit into the carb body) very well, as that cavity accumulates quite a bit of debris and hardened fuel remnants over the years. Our HCP1409SS bristle-wire brush is the perfect tool for this job:

    HCP1409SS Aftermarket STAINLESS STEEL WIRE-BRISTLE CLEANING BRUSH, 9.5mm diameter, great for the float valve seat threaded bore in all Hitachi carb bodies, and the fuel supply pipe bores within the carb body.
    $ 6.95


    Also, make sure that you do not "pinch" the o-rings as the tube is being inserted into the bores; some silicone grease or dish-washing soap on the o-rings will help avoid that problem.


    HCP92 OEM Hitachi fuel supply tube O-RING, each:
    $ 6.95

    HCP92SET2 OEM Hitachi fuel supply tube O-RINGS, pair:
    $ discontinued

    HCP92SET6 OEM Hitachi fuel supply tube O-RINGS, set of 6:
    $ discontinued

    HCP92SET10 OEM Hitachi fuel supply tube O-RINGS, set of 10:
    $ discontinued



    HCP2421 Aftermarket Hitachi Buna-N material fuel supply tube O-RING, each:
    $ 2.95

    HCP2421SET2 Aftermarket Hitachi Buna-N material fuel supply tube O-RINGS, pair:
    $ 5.75

    HCP2421SET6 Aftermarket Hitachi Buna-N material fuel supply tube O-RINGS, set of 6:
    $ 16.95

    HCP2421SET10 Aftermarket Hitachi Buna-N material fuel supply tube O-RINGS, set of 10:
    $ 24.95



    HCP2420 Aftermarket Hitachi Viton material fuel supply tube O-RING, each:
    $ 3.95

    HCP2420SET2 Aftermarket Hitachi Viton material fuel supply tube O-RINGS, pair:
    $ 7.75

    HCP2420SET6 Aftermarket Hitachi Viton material fuel supply tube O-RINGS, set of 6:
    $ 21.95

    HCP2420SET10 Aftermarket Hitachi Viton material fuel supply tube O-RINGS, set of 10:
    $ 29.95




    HITACHI CARB STARTER - ENRICHMENT CIRCUIT - CHOKE SYSTEM PARTS:

    The starter (choke) circuit is prone to a number of problems, from clogged passages in the starter jet (down in the bowl) to worn or fractured plunger valves and their related hardware. We've got some of those hard-to-find parts to properly restore your system.

    The starter circuit PLUNGER VALVE is the solid brass, needle-tipped valve that actually shuts off or opens the enrichment circuit. Worn tips, gouged seats, or a fractured head renders these valves useless, or will cause them to constantly leak fuel, resulting in an overly-rich fuel mixture. These valves are SPRING-loaded, and retained in the starter valve port in the carb body by a threaded, hollow-center brass SEAT, which is then surrounded by a small rubber DUST CAP.


    And if the threaded seat in the carb body where the plunger shaft brass seat screws into has been injured, or if you want to restore the threads to their like-new condition, this thread chaser tap is what you'll need:

    HCP2401 THREAD CHASER AND CLEAN-UP TAP, made from a high-speed titanium nitride coated steel. For the following holes: Hitachi starter / enrichment circuit (“choke”) brass plunger seat bore hole.
    $ 12.95

    HCP28170 Aftermarket thread tap or EZ-out extractor TAP HANDLE, featuring offset tap handles and fully adjustable head for all m3-m12 size taps and size 0 to ½” extractors. This is the proper way to hold a tap or extractor to insure that the force is directed straight down and doesn’t “wobble” as you are cutting, reaming, or extracting. Much better than using pliers or vise-grips to hold the tool……..
    $ 17.95



    HCP11141 Aftermarket Hitachi starter plunger valve seat DUST CAP, rubber seat cinches to the screw-in brass plunger seats and provides a dust- and air-tight seal that the plunger valves slides through. Most originals are hardened and inflexible due to heat saturation and no longer provide a good (or any!) sealing at all. Fits all XJ650 (except Turbo), XJ700 air-cooled engines, and all 1981-84 XJ750 air-cooled models. Each:
    $ 8.95

    HCP11141SET4 Aftermarket Hitachi starter plunger valve seat DUST CAPS, set of 4:
    $ 34.95


    HCP17580 Aftermarket Hitachi brass STARTER PLUNGER VALVE, fits all XJ650 (except Turbo), all XJ700 air-cooled models, and all 1981-84 XJ750 air-cooled models, each:
    $ 21.95

    HCP17580SET4 Aftermarket Hitachi brass STARTER PLUNGER VALVES, fits all XJ650 (except Turbo), all XJ700 air-cooled models, and all 1981-84 XJ750 air-cooled models, set of 4:
    $ 79.95


    HCP11143 Aftermarket Hitachi brass starter plunger valve SPRING, fits all XJ650 (except Turbo), all XJ700 air-cooled models, and all 1981-84 XJ750 air-cooled models, each:
    $ 5.95

    HCP11143SET4 Aftermarket Hitachi brass starter plunger valve SPRINGS, fits all XJ650 (except Turbo), all XJ700 air-cooled models, and all 1981-84 XJ750 air-cooled models, set of 4:
    $ 19.95


    Hitachi Carb Starter - Enrichment (“Choke”) Circuit Shaft and Brackets:

    Our re-plated Hitachi starter - enrichment (“choke”) circuit SHAFTS AND BRACKETS allow you to re-create the original look and beauty of these carb racks. These parts are available re-plated to their correct original yellow-zinc or black-zinc appearance. If you need to replace any missing hardware, or just want to create a show-winning look, then you should start your shopping list here! NOTE: all enrichment circuit shafts and brackets are re-plated, used parts, and as such, may have minor cosmetic flaws (tooling marks, fastener marks, etc.). Most such marks will not be visible once installed. Also, all re-plated items require a refundable core charge which will be credited back to you once you return a same-model, same-type of item(s) as you purchased. Since these are re-plated used parts, we do require an exchange for your original parts so we can have a steady supply of parts to be processed and re-plated for future sales.

    HCP27RP OEM re-plated carb starter - enrichment (“choke”) circuit ACTUATING SHAFT, long round shaft that carries the choke plunger lifter “finger” brackets. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all HSC32-series carbs as used on XJ650 Maxim, XJ650 Euro, XJ650RJ Seca, 1981-83 XJ750 Maxim and Seca, and XJ750 Euro models. Will also fit all XJ650 Midnight Maxim and XJ750 Midnight Maxim models but has a non-correct finish. NOTE: requires a $ 20.00 core charge, refundable upon the return of an undamaged, same-model, same-type shaft.
    $ 29.95 + $ 20.00 refundable core charge

    HCP5249RP OEM re-plated carb starter - enrichment (“choke”) circuit ACTUATING SHAFT, long round shaft that carries the choke plunger lifter “finger” brackets. Black-zinc plating as original. Fits HSC32-series carbs as used on XJ650 Midnight Maxim and XJ750 Midnight Maxim models. NOTE: requires a $ 20.00 core charge, refundable upon the return of an undamaged, same-model, same-type shaft.
    $ 39.95 + $ 20.00 refundable core charge

    HCP5250RP OEM re-plated carb starter - enrichment (“choke”) circuit ACTUATING SHAFT, long round shaft that carries the choke plunger lifter “finger” brackets. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits HSC33-series carbs as used on XJ700 air-cooled models and 1984 XJ750RL carbs. NOTE: requires a $ 20.00 core charge, refundable upon the return of an undamaged, same-model, same-type shaft.
    $ 49.95 + $ 20.00 refundable core charge



    HCP5235RP OEM re-plated carb starter - enrichment (“choke”) circuit ACTUATING BRACKET, this is the V-shaped bracket (with the cable-end clasp) which is screwed onto the actuating shaft listed above. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all HSC32- and HSC33-series carbs as used on all XJ650 Maxim, XJ700 air-cooled, 1981-83 XJ750, and XJ750 Euro models. Will also fit all XJ650 Midnight Maxim and XJ750 Midnight Maxim models but has a non-correct finish. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 29.95 + $ 25.00 refundable core charge

    HCP5236RP OEM re-plated carb starter - enrichment (“choke”) circuit ACTUATING BRACKET, long round shaft that carries the choke plunger lifter “finger” brackets. Black-zinc plating as original. Fits HSC32-series carbs as used on XJ650 Midnight Maxim and XJ750 Midnight Maxim models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 39.95 + $ 25.00 refundable core charge



    HCP5251RP-SET4 OEM re-plated carb starter - enrichment (“choke”) circuit PLUNGER LIFTER BRACKETS, set of 4 of the choke plunger-lifter “finger” brackets. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all HSC32- and HSC33-series carbs as used on all XJ650 Maxim, XJ700 air-cooled, 1981-83 XJ750, and XJ750 Euro models. Will also fit all XJ650 Midnight Maxim and XJ750 Midnight Maxim models but has a non-correct finish. NOTE: requires a $ 20.00 core charge, refundable upon the return of an undamaged, same-model, same-type lifter brackets.
    $ 28.95 + $ 20.00 refundable core charge

    HCP5252RP-SET4 OEM re-plated carb starter - enrichment (“choke”) circuit PLUNGER LIFTER BRACKETS, set of 4 of the choke plunger-lifter “finger” brackets. Black-zinc plating as original. Fits HSC32-series carbs as used on XJ650 Midnight Maxim and XJ750 Midnight Maxim models. NOTE: requires a $ 20.00 core charge, refundable upon the return of an undamaged, same-model, same-type lifter brackets.
    $ 34.95 + $ 20.00 refundable core charge




    Hitachi Carb Starter - Enrichment Circuit Cable Brackets:

    HCP347RP OEM re-plated carb hat CHOKE CABLE BRACKET, mounted on the #4 hat inner position. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all HSC32-series carbs as used on XJ650 Maxim, XJ650 Euro, XJ650RJ Seca, 1981-83 XJ750 Maxim and Seca, and XJ750 Euro models. Will also fit all XJ650 Midnight Maxim and XJ750 Midnight Maxim models but has a non-correct finish. Does not include the HCP2425RP clamp or the HCP2426 clamp screw listed below. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 39.95 + $ 25.00 refundable core charge

    HCP23261RP OEM re-plated carb hat CHOKE CABLE BRACKET, mounted on the #4 hat inner position. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all HSC33-series carbs as used on XJ700 air-cooled and 1984 XJ750RL Seca models. Does not include the HCP2425RP clamp or the HCP2426 clamp screw listed below. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 49.95 + $ 25.00 refundable core charge

    HCP2425RP OEM re-plated carb hat choke cable bracket CLAMP, mounts to the HCP347RP choke cable bracket listed above. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all HSC32-series carbs as used on XJ650 Maxim, XJ650 Euro, XJ650RJ Seca, XJ700 air-cooled models, 1981-83 XJ750 Maxim and Seca, and XJ750 Euro models. Will also fit all XJ650 Midnight Maxim and XJ750 Midnight Maxim models but has a non-correct finish. Does not include the HCP2426 clamp screw listed below. NOTE: requires a $ 15.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 19.95 + $ 15.00 refundable core charge

    HCP2426RP OEM re-plated carb hat choke cable bracket CLAMP SCREW, mounts the choke cable clamp to the choke cable bracket on all XJ650 Maxim, XJ650 Midnight Maxim, XJ650 Euro, XJ650RJ Seca, XJ700 air-cooled models, 1981-83 XJ750 Maxim and Seca, XJ750 Midnight Maxim, and XJ750 Euro models. Beautiful yellow-zinc plating brings the top side of these carbs to life. NOTE: requires a $ 10.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 11.95 + $ 10.00 refundable core charge


    HCP5407RP OEM re-plated carb hat CHOKE CABLE BRACKET, mounted on the #4 hat inner position. Beautiful black-zinc plating brings the top side of these carbs to life. Fits all HSC32-series carbs as used on XJ650 Midnight Maxim and 1983-84 XJ750 Midnight Maxim models. Does not include the HCP5408RP clamp or the HCP2426 clamp screw listed below. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 49.95 + $ 25.00 refundable core charge

    HCP5408RP OEM re-plated carb hat choke cable bracket CLAMP, mounts to the HCP347RP choke cable bracket listed above. Black-zinc plating as original. Fits all HSC32-series carbs as used on XJ650 Midnight Maxim and 1983-84 XJ750 Midnight Maxim models. Does not include the HCP2426 clamp screw listed below. NOTE: requires a $ 15.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 29.95 + $ 15.00 refundable core charge

    HCP2426RP OEM re-plated carb hat choke cable bracket CLAMP SCREW, mounts the choke cable clamp to the choke cable bracket on all XJ650 Maxim, XJ650 Midnight Maxim, XJ650 Euro, XJ650RJ Seca, XJ700 air-cooled models, 1981-83 XJ750 Maxim and Seca, XJ750 Midnight Maxim, and XJ750 Euro models. Beautiful yellow-zinc plating brings the top side of these carbs to life. NOTE: requires a $ 10.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 11.95 + $ 10.00 refundable core charge



    Hitachi Carb Starter - Enrichment Circuit Fasteners:

    xx4) Aftermarket Hitachi Starter-Enrichment Circuit Arm-to-Shaft SET SCREW. These replacement screws are used to retain the starter lever "finger" bracket to the starter circuit shaft. Use 4 of these screws per rack. NOTE: originally, these screws had a natural finish, with a straight slot (flat) head style drive. All aftermarket screws feature an allen-head drive and are slightly shorter (about 1mm) or longer (about 1mm) than the original set screws, but that length differences causes no operational or interference problems.


    HCP21376 Aftermarket Hitachi enrichment circuit lever arm-to-shaft SET SCREW, original straight-slot design, zinc-plated alloy steel. Slightly shorter than stock. Each:
    $ 1.50

    HCP21376SET4 Aftermarket Hitachi enrichment circuit lever arm-to-shaft SET SCREWS, set of 4:
    $ 5.95


    HCP21375 Aftermarket Hitachi enrichment circuit lever arm-to-shaft SET SCREW, original straight-slot design, 18-8 stainless steel. Slightly shorter than stock. Each:
    $ 1.95

    HCP21375SET4 Aftermarket Hitachi enrichment circuit lever arm-to-shaft SET SCREWS, set of 4:
    $ 7.50


    HCP299 Aftermarket Hitachi enrichment circuit lever arm-to-shaft SET SCREW, hex-key drive, black oxide coated alloy steel. Slightly longer than stock. Each:
    $ 1.25

    HCP299SET4 Aftermarket Hitachi enrichment circuit lever arm-to-shaft SET SCREWS, set of 4:
    $ 4.75


    HCP300 Aftermarket Hitachi enrichment circuit lever arm-to-shaft SET SCREW, hex-key drive, 18-8 stainless steel. Slightly longer than stock. Each:
    $ 1.25

    HCP300SET4 Aftermarket Hitachi enrichment circuit lever arm-to-shaft SET SCREWS, set of 4:
    $ 4.75



    xx5) Hitachi Starter-Enrichment SHAFT RETAINING SCREW, used to retain the starter shaft bracket to the starter circuit shaft. Use 1 of these screws per rack. NOTE: originally, these panhead screws had a natural finish, with a phillips-head drive system, and a captive lock washer. All OEM and aftermarket screws do not come with the captive lock washer, and a lock washer needs to be ordered separate.

    HCP292 OEM Hitachi enrichment circuit SHAFT RETAINING SCREW, black oxide coated alloy steel, panhead, phillips-drive. Use with the HCP296 or HCP298 lock washer listed further below. Each:
    $ 1.50

    HCP898 Aftermarket Hitachi enrichment circuit SHAFT RETAINING SCREW, zinc-plated alloy steel, panhead, phillips-drive. Use with the HCP297 lock washer listed further below. Each:
    $ 1.50

    HCP293 Aftermarket Hitachi enrichment circuit SHAFT RETAINING SCREW, panhead, phillips-drive, 18-8 stainless steel. Use with the HCP297 lock washer listed further below. Each:
    $ 2.50

    HCP294 Aftermarket Hitachi enrichment circuit SHAFT RETAINING SCREW, 18-8 stainless steel, socket-head, hex-drive. Use with the HCP297 lock washer listed further below. Each:
    $ 1.00

    HCP21403 Aftermarket Hitachi enrichment circuit SHAFT RETAINING SCREW, 18-8 stainless steel, button-head, hex-drive. Use with the HCP297 lock washer listed further below. Each:
    $ 1.00

    HCP295 Aftermarket Hitachi enrichment circuit SHAFT RETAINING SCREW, black oxide coated alloy steel, socket-head, hex-drive. Use with the HCP298 lock washer listed further below. Each:
    $ 1.00



    xx6) Hitachi enrichment shaft retainer screw LOCK WASHER, use with the above retainer screws. Use 1 of these washers per rack. NOTE: originally, the retainer screw came with a captive lock washer; all OEM and aftermarket screws do not come with the captive lock washer, and a lock washer needs to be ordered separate.


    HCP296 OEM Hitachi enrichment shaft retainer screw LOCK WASHER, zinc-plated alloy steel. Use with the HCP292 retaining screw listed above. Each:
    $ 1.50

    HCP297 Aftermarket Hitachi enrichment shaft retainer screw LOCK WASHER, 18-8 stainless steel. Use with the HCP293, HCP898, HCP21403, or HCP294 retaining screw listed above. Each:
    $ 0.95

    HCP298 Aftermarket Hitachi enrichment shaft retainer screw LOCK WASHER, black oxide coated alloy steel. Use with the HCP292 or HCP295 retaining screw listed above. Each:
    $ 0.95



    xx7) Aftermarket Hitachi Starter-Enrichment Circuit Arm-to-Shaft SPACER BUSHINGS. These plastic spacers fit onto the starter shaft on the right end, between the #3 and #4 carbs. There is a short, thin bushing (used in-between the starter shaft support post on the #4 carb and the choke lever actuator bracket for the #4 carb) and a much longer bushing (used in-between the #4 carb starter shaft support bracket and the choke shaft actuating bracket). Although these bushings generally never "wear out", they do get very discolored over time (becoming almost brown in color) and nice fresh set of snow-white bushings really spruces up any carb rebuild project. Precision-machined delrin plastic spacer bushings for all HSC32 or HSC33 series carbs used on XJ model bikes. NOTE: originally, these bushings were white on all models, including the otherwise all-black carbs used on Midnight Maxim models. We also offer these bushings in black for a custom-look on those models.

    HCP900WH Aftermarket Hitachi starter shaft THIN ("short") SPACER BUSHING, white, use one per carb rack on both the HSC32 and HSC33 model carbs.
    $ 6.95

    HCP900BL Aftermarket Hitachi starter shaft THIN ("short") SPACER BUSHING, black, use one per carb rack on both the HSC32 and HSC33 model carbs.
    $ 6.95


    HCP901WH Aftermarket Hitachi starter shaft THICK ("long") SPACER BUSHING, white, use one per carb rack on HSC32 model carbs.
    $ 8.95

    HCP901BL Aftermarket Hitachi starter shaft THICK ("long") SPACER BUSHING, black, use one per carb rack on HSC32 model carbs.
    $ 8.95


    HCP13650 Aftermarket Hitachi starter shaft THICK ("long") SPACER BUSHING, white, use one per carb rack on HSC33 model carbs.
    $ 6.95




    HITACHI VACUUM DIAPHRAM AND PISTON ASSEMBLY:

    fs5) OEM Hitachi HSC32 series carbs VACUUM DIAPHRAM AND PISTON ASSEMBLY, the slide piston with the non-detachable rubber vacuum diaphram seal. Although it is possible to repair thin spots and TINY pin-holes that occur in original diaphragms, anything greater than that will require replacement, as these diaphram are under a lot of pressure and stress and the continued flexing of the rubber will eventually lead to failure. Fits all XJ650 (except Turbo) models, and all XJ750 models. NOTE: HSC32 series carbs are used on all XJ650 (except Turbo) engines, and all XJ750 air-cooled engines except the 1984 XJ750RL engines.....which, along with the XJ700 air-cooled models, used the HSC33 series carbs.

    NOTE: carbs that have been modified with aftermarket "jetting kits" may have had the air bleed holes in the bottom of the piston modified (enlarged), as that is what the jetting kit manufactures advise (and typically include a specific size drill bit in their kits). Larger air bleed holes in these pistons will cause them to rise quicker, thus richening the fuel mixture earlier in the rpm range. This is a modification that is not easily "un-done" on modified pistons. Stock bleed holes are about 1.70mm and 1.75mm in diameter on the HSC32 series pistons.

    The long slinky SPRING provides the proper pressure and resistance to the movement of the piston unit under a variety of vacuum signal conditions, and modified, stretched, or damaged springs should be replaced. Ideally, all fours springs should be replaced all at once to insure equal response from each vacuum piston.


    HCP69 OEM Hitachi carb VACUUM DIAPHRAM AND PISTON ASSEMBLY, brand new, each:
    $ discontinued

    HCP69SET4 OEM Hitachi carb VACUUM DIAPHRAM AND PISTON ASSEMBLIES, set of 4:
    $ discontinued


    HCP19365 Aftermarket Hitachi HSC32-series vacuum piston SPRING, fits all XJ650 (except Turbo) and all air-cooled XJ750 (except 1984 XJ750RL) model carbs, each:
    $ 12.95

    HCP19365SET4 Aftermarket Hitachi HSC32-series vacuum piston SPRINGS, set of 4:
    $ 39.95


    HCP19366 Aftermarket Hitachi HSC33-series vacuum piston SPRING, fits all XJ700 non-X (air-cooled) and all 1984 XJ750RL air-cooled model carbs, each:
    $ 12.95

    HCP19366SET4 Aftermarket Hitachi HSC33-series vacuum piston SPRINGS, set of 4:
    $ 39.95


    NOTE: the following product(s) can only be shipped via ground transport (which thus eliminates the postal Priority Mail, postal Express Mail, or private carrier Expedited levels of service for this item) and cannot (and will not----don't even ask!) be shipped outside of the continental USA. Additionally, there may be a per-package weight or quantity restriction, and thus multiple-unit orders of this product may have to be shipped in separate packages and will incur additional shipping charges.

    HCP8540 Aftermarket carb diaphram rubber RnR FLUID. Dissolved and chlorinated paraffin wax is the best (and perhaps the only) way to safely bring some life back into stiff, worn rubber material... such as that found in those all-important carb piston diaphragms. Years of hard life inside of your carb take their toll, and whenever your carb is apart for service, and generous application of this product will help to clean, maintain, and restore the flexibility, while prolonging their usable service life. 10cc dripper bottle contains enough fluid to do about eight diaphragms. Simple to use, spread on, wait a few minutes, wipe off, repeat and you're done!
    $ 9.95


    fms76) Aftermarket Hitachi carb vacuum piston DIAPHRAM ONLY allows you to salvage your original pistons by replacing the rubber diaphragm. NOTE: the use of the any of the following vacuum diaphrams will require you to remove both the upper and lower plastic diaphragm “cinch” rings (with wire cutters, etc.) and carefully slide these new diaphrams over the top lip of piston and onto the “neck” of the piston (where those cinch rings used to sit). The diaphragm is held in place entirely by a tight friction fit. Installation instructions are included. These are a decent solution when you have missing, damaged, or leaky vac pistons diaphrams. NOTE: it is strongly suggested that all four original diaphrams are replaced (even if only one or two in your carb set are bad), as these new diaphrams will not provide exactly the same vacuum-regulated response as old, original diaphrams.


    HCP17537 Aftermarket Hitachi HSC32 and HSC33 series carbs VACUUM PISTON DIAPHRAM ONLY, fits all XJ650 (except Turbo), all XJ700 air-cooled models, and all 1981-84 XJ750 models. This is the rubber diaphram only, please see the NOTE above in regards to the installation and use of this product. Each:
    $ 24.95

    HCP17537SET4 Aftermarket Hitachi VACUUM PISTON DIAPHRAMS ONLY, set of 4:
    $ 89.95



    HCP17538 Aftermarket Hitachi HSC40 series carbs VACUUM PISTON DIAPHRAM ONLY, fits all 1984-86 XV700, 1981-83 XV750, 1981-83 XV920, 1984-86 XV1000, and some XV1100 models that use Hitachi carbs (note that some XV models use Mikuni carbs). This is the rubber diaphram only, please see the NOTE above in regards to the installation and use of this product. Each:
    $ 24.95

    HCP17538SET4 Aftermarket Hitachi VACUUM PISTON DIAPHRAMS ONLY, set of 4:
    $ 89.95
     
    Last edited: Oct 23, 2021
  3. chacal

    chacal Moderator Moderator Supporting Vendor Premium Member

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    HITACHI CARB HATS:

    Reproduction Hitachi CARB DIAPHRAM COVERS, commonly called carb "hats", are the bright polished upper covers with the "sloped dome" shape. Brand new stampings perfectly replace rusted and pitted originals, add a final "crowning" touch to your carb restoration project. All hats will fit all Hitachi HSC32 or HSC33 series carbs as used on the XJ-series bikes.


    HCP9162 Aftermarket Hitachi POLISHED SILVER CHROME CARB HAT, mirror finish as used on all fours carbs on all North American XJ650 Maxim models, XJ650RJ Seca models, and all XJ750 Maxim and Seca models. Also used on the outboard carbs only (#1 and #4) on all non-North American XJ650 and XJ750 models, and on all USA XJ700 non-X (air-cooled) models. Each:
    $ 39.95

    HCP9162SET2 Aftermarket Hitachi POLISHED SILVER CHROME CARB HATS, set of 2:
    $ 74.95

    HCP9162SET4 Aftermarket Hitachi POLISHED SILVER CHROME CARB HATS, set of 4:
    $ 139.95



    HCP9164 Aftermarket Hitachi NATURAL ZINC-PLATED CARB HAT, dull silver finish as used on the inner carbs only (#2 and #3) on all non-North American XJ650 and XJ750 models, and on all USA XJ700 non-X (air-cooled) models. Each:
    $ 37.95

    HCP9164SET2 Aftermarket Hitachi NATURAL ZINC-PLATED CARB HAT, set of 2:
    $ 69.95



    HCP91624SET Complete set of 4 carb hats, contains two of the HCP9162 polished chrome hats, and two of the HCP9164 zinc-plated hats. This combination of covers is correct for the following models: non-North American XJ650 models, non-North American XJ750 models, and USA XJ700 air-cooled models.
    $ 129.95




    HCP9163 Aftermarket Hitachi POLISHED GOLDEN CHROME CARB HAT, golden mirror finish as used on all fours carbs on all XJ650 Midnight Maxim and XJ750 Midnight Maxim models. Each:
    $ 44.95

    HCP9163SET2 Aftermarket Hitachi POLISHED GOLDEN CHROME CARB HATS, set of 2:
    $ 79.95

    HCP9163SET4 Aftermarket Hitachi POLISHED GOLDEN CHROME CARB HATS, set of 4:
    $ 149.95



    HITACHI CARB HAT HARDWARE:

    Hitachi Carb Hat Brackets:

    Our re-plated Hitachi diaphragm cover SHAFTS AND BRACKETS allow you to re-create the original look and beauty of these carb racks. These parts are available re-plated to their correct original yellow-zinc or black-zinc appearance. If you need to replace any missing hardware, or just want to create a show-winning look, then you should start your shopping list here! NOTE: all carb hat brackets and hardware are re-plated, used parts, and as such, may have minor cosmetic flaws (tooling marks, fastener marks, etc.). Most such marks will not be visible once installed. Also, all re-plated items require a refundable core charge which will be credited back to you once you return a same-model, same-type of item(s) as you purchased. Since these are re-plated used parts, we do require an exchange for your original parts so we can have a steady supply of parts to be processed and re-plated for future sales.


    HCP347RP OEM re-plated carb hat CHOKE CABLE BRACKET, mounted on the #4 hat inner position. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all HSC32-series carbs as used on XJ650 Maxim, XJ650 Euro, XJ650RJ Seca, 1981-83 XJ750 Maxim and Seca, and XJ750 Euro models. Will also fit all XJ650 Midnight Maxim and XJ750 Midnight Maxim models but has a non-correct finish. Does not include the HCP2425RP clamp or the HCP2426 clamp screw listed below. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 39.95 + $ 25.00 refundable core charge

    HCP23261RP OEM re-plated carb hat CHOKE CABLE BRACKET, mounted on the #4 hat inner position. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all HSC33-series carbs as used on XJ700 air-cooled and 1984 XJ750RL Seca models. Does not include the HCP2425RP clamp or the HCP2426 clamp screw listed below. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 49.95 + $ 25.00 refundable core charge

    HCP2425RP OEM re-plated carb hat choke cable bracket CLAMP, mounts to the HCP347RP choke cable bracket listed above. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all HSC32-series carbs as used on XJ650 Maxim, XJ650 Euro, XJ650RJ Seca, XJ700 air-cooled models, 1981-83 XJ750 Maxim and Seca, and XJ750 Euro models. Will also fit all XJ650 Midnight Maxim and XJ750 Midnight Maxim models but has a non-correct finish. Does not include the HCP2426 clamp screw listed below. NOTE: requires a $ 15.00 core charge, refundable upon the return of an undamaged, same-model, same-type clamp.
    $ 19.95 + $ 15.00 refundable core charge

    HCP2426RP OEM re-plated carb hat choke cable bracket CLAMP SCREW, mounts the choke cable clamp to the choke cable bracket on all XJ650 Maxim, XJ650 Midnight Maxim, XJ650 Euro, XJ650RJ Seca, XJ700 air-cooled models, 1981-83 XJ750 Maxim and Seca, XJ750 Midnight Maxim, and XJ750 Euro models. Beautiful yellow-zinc plating brings the top side of these carbs to life. NOTE: requires a $ 10.00 core charge, refundable upon the return of an undamaged, same-model, same-type screw.
    $ 11.95 + $ 10.00 refundable core charge


    HCP5407RP OEM re-plated carb hat CHOKE CABLE BRACKET, mounted on the #4 hat inner position. Beautiful black-zinc plating brings the top side of these carbs to life. Fits all HSC32-series carbs as used on XJ650 Midnight Maxim and 1983-84 XJ750 Midnight Maxim models. Does not include the HCP5408RP clamp or the HCP2426 clamp screw listed below. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 49.95 + $ 25.00 refundable core charge

    HCP5408RP OEM re-plated carb hat choke cable bracket CLAMP, mounts to the HCP347RP choke cable bracket listed above. Black-zinc plating as original. Fits all HSC32-series carbs as used on XJ650 Midnight Maxim and 1983-84 XJ750 Midnight Maxim models. Does not include the HCP2426 clamp screw listed below. NOTE: requires a $ 15.00 core charge, refundable upon the return of an undamaged, same-model, same-type clamp.
    $ 29.95 + $ 15.00 refundable core charge

    HCP2426RP OEM re-plated carb hat choke cable bracket CLAMP SCREW, mounts the choke cable clamp to the choke cable bracket on all XJ650 Maxim, XJ650 Midnight Maxim, XJ650 Euro, XJ650RJ Seca, XJ700 air-cooled models, 1981-83 XJ750 Maxim and Seca, XJ750 Midnight Maxim, and XJ750 Euro models. Beautiful yellow-zinc plating brings the top side of these carbs to life. NOTE: requires a $ 10.00 core charge, refundable upon the return of an undamaged, same-model, same-type screw.
    $ 11.95 + $ 10.00 refundable core charge



    HCP346RP OEM re-plated carb hat THROTTLE CABLE BRACKET, mounted on the #3 hat inner position. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all HSC32- and HSC33-series carbs as used on XJ650 (except Turbo), XJ700 air-cooled, 1981-84 XJ750, and XJ750 Euro models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 39.95 + $ 25.00 refundable core charge



    Hitachi Carb Hat Clips:

    HCP21520 Aftermarket Hitachi HSC32-series carb hat VACUUM HOSE ROUTING CLIP, use one on the #2 carb rear inner carb hat screw position, on all XJ650 (except Turbo) and 1981-83 XJ750 engines. This “shepherd’s crook” bright plated clip routes the vacuum hose (in the “crook” part of the clip) away from obstacles. Use 1 per carb bank. Perfectly replaces a commonly missing or rusted original. Use 1 per carb. Each:
    $ 9.95

    HCP21523 Aftermarket petcock-to-intake manifold VACUUM HOSE ROUTING CLIP, use one on the #2 carb front inner carb hat screw position, on all XJ700 air-cooled engines. This “shepherd’s crook” bright plated clip routes the vacuum hose (in the “crook” part of the clip) away from obstacles. Use 1 per carb bank. Perfectly replaces a commonly missing or rusted original. Use 1 per carb. Each:
    $ 9.95



    Hitachi Carb Hat Fasteners:

    h5) Hitachi carb diaphram cover (chrome "dome" or "Hat") individual MOUNTING SCREWS AND HARDWARE, available in different materials and finishes to suit your needs. Also see our complete CARB HARDWARE KITS listed further below for the best deal and ease of ordering!

    Here’s are some quick guides that shows the different fastener head and drive styles:



    https://www.boltdepot.com/fastener-information/Printable-Tools/Type-Chart.pdf

    http://www.oocities.org/dtmcbride/home_garden/fasteners.html


    HSC32 model carbs ----used on all XJ650 and XJ750 with Hitachi carbs except the XJ700 air-cooled models and XJ750RL Seca (1984) models, use the following screw configuration:

    The short screws are used in any position that does not have a clip or bracket associated with it. You will need to use a total of 10 of these short screws per complete carb rack.

    The mid-length screws are used in any position that has a clip or bracket associated with it. You will need to use a total of 6 of these mid-length screws per complete carb rack on the HSC32 model carbs.


    HSC33 model carbs ----used on all XJ700 air-cooled models and the 1984 XJ750RL Seca models, use the following screw configuration:

    Eleven of the mid-length screws, used in all positions except for the positions which secure the end covers, and for the position that secures the vacuum line clip on the #2 carb.

    Five of the long screws, used on the outer carbs outer positions (with the carb end covers) and on the #2 carb with the vacuum line clip.


    NOTE: originally, all carb hat screws were a natural finish, panhead style, phillips-drive with a captive lock washer. Current OEM screws and all aftermarket screws do NOT have an integral lock washer and the lock washer must be ordered separately from the choices listed further below.

    Replacement screws come in a variety of different finish and head drive styles, so please review the descriptions below carefully!



    - These replacement panhead, phillips-drive screws have a natural finish and are made from alloy steel. Use with the HCP326 or HCP922 lock washers listed further below:

    HCP322 OEM Hitachi carb hat short MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive, each:
    $ 2.95

    HCP322SET10 OEM Hitachi carb hat short MOUNTING SCREWS, set of 10:
    $ 21.95



    HCP323 OEM Hitachi carb hat mid-length MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive, each:
    $ 2.95

    HCP323SET6 OEM Hitachi carb hat mid-length MOUNTING SCREWS, set of 6:
    $ 16.95

    HCP323SET11 OEM Hitachi carb hat mid-length MOUNTING SCREWS, set of 11:
    $ 29.95



    HCP4190 OEM Hitachi carb hat long MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive, each:
    $ 2.50

    HCP4190SET5 OEM Hitachi carb hat long MOUNTING SCREWS, set of 5:
    $ 6.95




    HCP918 Aftermarket Hitachi carb hat short MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive, each:
    $ 1.25

    HCP918SET10 Aftermarket Hitachi carb hat short MOUNTING SCREWS, set of 10:
    $ 8.95



    HCP25913 Aftermarket Hitachi carb hat short MOUNTING SCREW, bright zinc-plated alloy steel, panhead, phillips drive, JIS small-head design as original, each:
    $ 2.95

    HCP25913SET10 Aftermarket Hitachi carb hat short MOUNTING SCREWS, set of 10:
    $ 21.95



    HCP919 Aftermarket Hitachi carb hat mid-length MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive, each:
    $ 1.00

    HCP919SET6 Aftermarket Hitachi carb hat mid-length MOUNTING SCREWS, set of 6:
    $ 4.00

    HCP919SET11 Aftermarket Hitachi carb hat mid-length MOUNTING SCREWS, set of 11:
    $ 7.00



    HCP6418 Aftermarket Hitachi carb hat long MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive, each:
    $ 1.50

    HCP6418SET5 Aftermarket Hitachi carb hat long MOUNTING SCREWS, set of 5:
    $ 6.95




    - These replacement panhead, phillips-drive screws have a polished head and are made from an 18-8 stainless steel. Use with the HCP336 lock washers listed further below:

    HCP1355 Aftermarket Hitachi carb hat short MOUNTING SCREW, 18-8 stainless-steel, polished panhead, phillips-drive, each:
    $ 1.25

    HCP1355SET10 Aftermarket Hitachi carb hat short MOUNTING SCREWS, set of 10:
    $ 9.95



    HCP2641 Aftermarket Hitachi carb hat mid-length MOUNTING SCREW, 18-8 stainless-steel, polished panhead, phillips-drive, each:
    $ 1.20

    HCP2641SET6 Aftermarket Hitachi carb hat mid-length MOUNTING SCREWS, set of 6:
    $ 5.00

    HCP2641SET11 Aftermarket Hitachi carb hat mid-length MOUNTING SCREWS, set of 11:
    $ 9.00



    HCP6421 Aftermarket Hitachi carb hat long MOUNTING SCREW, 18-8 stainless-steel, polished panhead, phillips-drive, each:
    $ 2.95

    HCP6421SET5 Aftermarket Hitachi carb hat long MOUNTING SCREWS, set of 5:
    $ 12.95




    - These replacement button-head, hex-drive screws have a polished head and are made from an 18-8 stainless steel. Use with the HCP336 lock washers listed further below:

    HCP332 Aftermarket Hitachi carb hat short MOUNTING SCREW, 18-8 stainless-steel, polished button head, hex-drive, each:
    $ 1.50

    HCP332SET10 Aftermarket Hitachi carb hat short MOUNTING SCREWS, set of 10:
    $ 8.95



    HCP333 Aftermarket Hitachi carb hat mid-length MOUNTING SCREW, 18-8 stainless-steel, polished button head, hex-drive, each:
    $ 1.25

    HCP333SET6 Aftermarket Hitachi carb hat mid-length MOUNTING SCREWS, set of 6:
    $ 5.95

    HCP333SET11 Aftermarket Hitachi carb hat mid-length MOUNTING SCREWS, set of 11:
    $ 8.95



    HCP14239 Aftermarket Hitachi carb hat long MOUNTING SCREW, 18-8 stainless-steel, polished button head, hex-drive, each:
    $ 1.50

    HCP14239SET5 Aftermarket Hitachi carb hat long MOUNTING SCREWS, set of 5:
    $ 6.95




    - These replacement socket-head, hex-drive screws have a smooth polished head and are made from an 18-8 stainless steel. Use with the HCP336 lock washers listed further below:

    HCP329 Aftermarket Hitachi carb hat short MOUNTING SCREW, 18-8 stainless steel, smooth polished socket head, hex-drive, each:
    $ 1.25

    HCP329SET10 Aftermarket Hitachi carb hat short MOUNTING SCREWS, set of 10:
    $ 8.95



    HCP330 Aftermarket Hitachi carb hat mid-length MOUNTING SCREW, 18-8 stainless steel, smooth polished socket head, hex-drive, each:
    $ 1.40

    HCP330SET6 Aftermarket Hitachi carb hat mid-length MOUNTING SCREWS, set of 6:
    $ 4.95

    HCP330SET11 Aftermarket Hitachi carb hat mid-length MOUNTING SCREWS, set of 11:
    $ 7.95



    HCP6424 Aftermarket Hitachi carb hat long MOUNTING SCREW, 18-8 stainless steel, smooth polished socket head, hex-drive, each:
    $ 0.95

    HCP6424SET5 Aftermarket Hitachi carb hat long MOUNTING SCREWS, each:
    $ 3.95




    - These replacement socket-head, hex-drive screws have a ribbed head with a black oxide-coated finish and are made from alloy steel. Use with the HCP342 lock washers listed further below:

    HCP339 Aftermarket Hitachi carb hat short MOUNTING SCREW, black oxide-coated steel, ribbed socket head, hex-drive, each:
    $ 1.20

    HCP339SET10 Aftermarket Hitachi carb hat short MOUNTING SCREWS, set of 10:
    $ 9.00



    HCP340 Aftermarket Hitachi carb hat mid-length MOUNTING SCREW, black oxide-coated steel, ribbed socket head, hex-drive, each:
    $ 1.00

    HCP340SET6 Aftermarket Hitachi carb hat mid-length MOUNTING SCREWS, set of 6:
    $ 4.95

    HCP340SET11 Aftermarket Hitachi carb hat mid-length MOUNTING SCREWS, set of 11:
    $ 7.95



    HCP6423 Aftermarket Hitachi carb hat long MOUNTING SCREW, black oxide-coated steel, ribbed socket head, hex-drive, each:
    $ 0.95

    HCP6423SET5 Aftermarket Hitachi carb hat long MOUNTING SCREWS, each:
    $ 3.95



    k5) Hitachi carb diaphram cover mounting screw LOCK WASHER.

    NOTE: originally, these washers were integral to the mounting screws and featured a natural finish. Current OEM screws and all aftermarket screws do NOT have an integral lock washer and thus the lock washers must be ordered separately from the choices listed below. These lock washers will fit all of the mounting screws listed above.

    HSC32 model carbs ----used on all XJ650 and XJ750 with Hitachi carbs except the XJ700 air-cooled models and XJ750RL Seca (1984) models, use lockwashers on the following screw positions:

    All sixteen (16) carb hat screw positions.


    HSC33 model carbs ----used on all XJ700 air-cooled models and the 1984 XJ750RL Seca models, use lockwashers on the following screw positions:

    All positions that use a long hat screw also use a lockwasher -----used on the outer carbs outer positions (with the carb end covers) and on the #2 carb with the vacuum line clip, a total of 5 per rack.



    HCP326 OEM Hitachi carb hat mounting screw LOCK WASHER, zinc-plated alloy steel, each:
    $ 1.95

    HCP326SET4 OEM Hitachi carb hat mounting screw LOCK WASHERS, set of 4:
    $ 7.50

    HCP326SET5 OEM Hitachi carb hat mounting screw LOCK WASHERS, set of 5:
    $ 8.50

    HCP326SET16 OEM Hitachi carb hat mounting screw LOCK WASHERS, set of 16:
    $ 14.95



    HCP922 Aftermarket Hitachi carb hat mounting screw LOCK WASHER, zinc-plated alloy steel, each:
    $ 0.95

    HCP922SET4 Aftermarket Hitachi carb hat mounting screw LOCK WASHERS, set of 4:
    $ 3.50

    HCP922SET5 Aftermarket Hitachi carb hat mounting screw LOCK WASHERS, set of 5:
    $ 4.25

    HCP922SET16 Aftermarket Hitachi carb hat mounting screw LOCK WASHERS, set of 16:
    $ 7.95



    HCP336 Aftermarket Hitachi carb hat mounting screw LOCK WASHER, 18-8 stainless-steel, each:
    $ 0.95

    HCP336SET4 Aftermarket Hitachi carb hat mounting screw LOCK WASHERS, set of 4:
    $ 3.50

    HCP336SET5 Aftermarket Hitachi carb hat mounting screw LOCK WASHERS, set of 5:
    $ 4.25

    HCP336SET16 Aftermarket Hitachi carb hat mounting screw LOCK WASHERS, set of 16:
    $ 7.95



    HCP342 Aftermarket Hitachi carb hat mounting screw LOCK WASHER, black oxide-coated alloy steel, each:
    $ 0.95

    HCP342SET4 Aftermarket Hitachi carb hat mounting screw LOCK WASHERS, set of 4:
    $ 3.25

    HCP342SET5 Aftermarket Hitachi carb hat mounting screw LOCK WASHERS, set of 5:
    $ 3.95

    HCP342SET16 Aftermarket Hitachi carb hat mounting screw LOCK WASHERS, set of 16:
    $ 8.95



    k5) Hitachi carb diaphram cover mounting screw FLAT WASHER.

    NOTE: originally featured a natural finish.

    HSC32 model carbs ----used on all XJ650 and XJ750 with Hitachi carbs except the XJ700 air-cooled models and XJ750RL Seca (1984) models, use flat washers on the following screw positions:

    Use 1 per carb rack, on the #2 carb rear position where the vacuum line clip attaches (this position receives both a lock washer and a flat washer).


    HSC33 model carbs ----used on all XJ700 air-cooled models and the 1984 XJ750RL Seca models, use flat washers on the following screw positions:

    All positions that use a long hat screw also use a flat washer -----used on the outer carbs outer positions (with the carb end covers) and on the #2 carb with the vacuum line clip, a total of 5 per rack.


    HCP328 OEM Hitachi carb hat mounting screw FLAT WASHER, zinc-plated alloy-steel, each:
    $ 1.95

    HCP328SET5 OEM Hitachi carb hat mounting screw FLAT WASHERS, set of 5:
    $ 7.50


    HCP924 Aftermarket Hitachi carb hat mounting screw FLAT WASHER, zinc-plated alloy-steel, each:
    $ 0.95

    HCP924SET5 Aftermarket Hitachi carb hat mounting screw FLAT WASHERS, set of 5:
    $ 4.50


    HCP338 Aftermarket Hitachi carb hat mounting screw FLAT WASHER, 18-8 stainless-steel, each:
    $ 0.95

    HCP338SET5 Aftermarket Hitachi carb hat mounting screw FLAT WASHERS, set of 5:
    $ 4.50


    HCP28050 Aftermarket Hitachi carb hat mounting screw FLAT WASHER, grade 316 stainless-steel, each:
    $ 0.95

    HCP28050SET5 Aftermarket Hitachi carb hat mounting screw FLAT WASHERS, set of 5:
    $ 4.75


    HCP1356 Aftermarket Hitachi carb hat mounting screw FLAT WASHER, black oxide-coated alloy steel, each:
    $ 1.95

    HCP1356SET5 Aftermarket Hitachi carb hat mounting screw FLAT WASHER, set of 5:
    $ 7.95




    HITACHI CARB LOWER END PARTS:

    AIR JET COVER PLATE:

    Early Hitachi HSC32 series carbs (XJ650 except Turbo, 1981-83 XJ750 Maxim, Seca, and Euro models) have a crescent-moon shaped flat COVER PLATE over the air jets (top side of carbs, underneath the vacuum piston diaphragm). This plate and it’s special hold-down screw is not present on later versions of these carbs, and you will need to inspect your carbs carefully to see if the “third” (rear-most) hole in the air jet chamber is threaded to accept the hold-down screw (all of the Hitachi carbs have this hole drilled, but only those carbs that used the cover plate has the hole tapped/threaded to accept the cover plate and its hold-down screw).

    Our re-plated Hitachi air jet COVER PLATE AND SCREW allow you to re-create the original look and beauty of these carb racks. These parts are available re-plated to their correct original yellow-zinc appearance. If you need to replace any missing hardware, or just want to create a show-winning look, then you should start your shopping list here! NOTE: all jet cover plates and screws are re-plated, used parts, and as such, may have minor cosmetic flaws (tooling marks, fastener marks, etc.). Most such marks will not be visible once installed. Also, all re-plated items require a refundable core charge which will be credited back to you once you return a same-model, same-type of item(s) as you purchased. Since these are re-plated used parts, we do require an exchange for your original parts so we can have a steady supply of parts to be processed and re-plated for future sales.


    HCP289RP OEM re-plated air jet chamber COVER PLATE, use 1 per carb on all models that originally used them. Fits all XJ650 (except Turbo) and air-cooled XJ750 engines with Hitachi carbs that have the rear-most hole threaded. Correct yellow-zinc plated cover. NOTE: requires a $ 5.00 core charge, refundable upon the return of an undamaged, same-model, same-type plate.
    Each:
    $ 19.95 + $ 5.00 refundable core charge

    HCP290RP OEM re-plated air jet chamber COVER PLATE SCREW, use 1 per carb on all models that originally used them. Fits all XJ650 (except Turbo) and air-cooled XJ750 engines with Hitachi carbs that have the rear-most hole threaded. Correct yellow-zinc plated, special flanged screw is used with the HCP289RP cover plate above. NOTE: requires a $ 5.00 core charge, refundable upon the return of an undamaged, same-model, same-type screw.
    Each:
    $ 17.95 + $ 5.00 refundable core charge





    HITACHI MAIN FUEL JETS:

    ee) Aftermarket Hitachi brass MAIN FUEL JETS, sizes as follows, fits all XJ650 (except Turbo), all XJ750, all XJ700 (exc. "X") models, and all XV (Virago) models using Hitachi HSC40-series carbs.

    NOTE: stock Hitachi XJ series carbs used the following original sizes:

    #102: XJ750E-II models (cylinders #2 & #3)

    #105: XJ750E-II models (cylinders #1 & #4)

    #106: 1984 XJ750RL Seca models.

    #107: all XJ700 non-X models.

    #110: all XJ650 North American models (except 1982-84 Canadian models), all 1980-81 XJ650 UK/European (4K0 and 4K1) models, and all XJ650 Police (37G) models.

    #112: all 1982-84 XJ650 UK/European (11N and 14R) models and 1982-84 XJ650 Canadian models.

    #118: all XJ750 Police (24L and 37H) models.

    #120: all XJ750 North American and UK/European models except the 1984 XJ750RL models.

    #122: 1986 XV1000 models (on the #1 carb only)

    #124: 1981-83 XV750 models (on the front cylinder carb only), 1986 XV700 models (on the #1 carb only), 1981-82 some XV920RH/RJ models, and 1984 XV1000 models (on the #1 carb only)

    #126: 1981-83 some XV920 models

    #128: 1982-83 XV920 some models, 1984-86 XV700 some models, 1984 XV1000 models (on the #2 carb only), and 1986 XV1000 models (on the #2 carb only)

    #132: 1981-83 XV750 models (on the rear cylinder carb only)

    All the other sizes are for "tuning" or re-jetting purposes when changing intakes or exhaust systems.


    HCP10228 Aftermarket Hitachi brass #102 MAIN FUEL JET, stock size for XJ750E-II models on cylinders #2 and #3, each:
    $ 11.95

    HCP10228SET4 Aftermarket Hitachi brass #102 MAIN FUEL JETS, set of 4:
    $ 46.95


    HCP10229 Aftermarket Hitachi brass #105 MAIN FUEL JET, stock size for XJ750E-II models on cylinders #1 and #4, each:
    $ 11.95

    HCP10228SET4 Aftermarket Hitachi brass #105 MAIN FUEL JETS, set of 4:
    $ 46.95


    HCP6316 Aftermarket Hitachi brass #106 MAIN FUEL JET, stock size for 1984 XJ750RL Seca models, each:
    $ 11.95

    HCP6316SET4 Aftermarket Hitachi brass #106 MAIN FUEL JETS, set of 4:
    $ 46.95


    HCP6317 Aftermarket Hitachi brass #107 MAIN FUEL JET, stock size for XJ700 non-X models, each:
    $ 8.95

    HCP6317SET4 Aftermarket Hitachi brass #107 MAIN FUEL JETS, set of 4:
    $ 34.95


    HCP6318 Aftermarket Hitachi brass #108 MAIN FUEL JET, not an original size, used for fuel mixture tuning purposes only, each:
    $ 11.95

    HCP6318SET4 Aftermarket Hitachi brass #108 MAIN FUEL JETS, set of 4:
    $ 46.95


    HCP6319 Aftermarket Hitachi brass #109 MAIN FUEL JET, not an original size, used for fuel mixture tuning purposes only, each:
    $ 11.95

    HCP6319SET4 Aftermarket Hitachi brass #109 MAIN FUEL JETS, set of 4:
    $ 46.95


    HCP10601 Aftermarket Hitachi brass #110 MAIN FUEL JET, stock size for all XJ650 North American models (except 1982-84 Canadian models), all 1980-81 XJ650 UK/European (4K0 and 4K1) models, and all XJ650 Police (37G) models, each:
    $ 8.95

    HCP10601SET4 Aftermarket Hitachi brass #110 MAIN FUEL JETS, set of 4:
    $ 34.95


    HCP10602 Aftermarket Hitachi brass #112 MAIN FUEL JET, stock size for all 1982-84 XJ650 UK/European (11N and 14R) models and 1982-84 XJ650 Canadian models, each:
    $ 8.95

    HCP10602SET4 Aftermarket Hitachi brass #112 MAIN FUEL JETS, set of 4:
    $ 34.95


    HCP8366 Aftermarket Hitachi brass #114 MAIN FUEL JET, not an original size, used for fuel mixture tuning purposes only, each:
    $ 8.95

    HCP8366SET4 Aftermarket Hitachi brass #114 MAIN FUEL JETS, set of 4:
    $ 34.95


    HCP10082 Aftermarket Hitachi brass #116 MAIN FUEL JET, not an original size, used for fuel mixture tuning purposes only, each:
    $ 8.95

    HCP10082SET4 Aftermarket Hitachi brass #116 MAIN FUEL JETS, set of 4:
    $ 34.95


    HCP10606 Aftermarket Hitachi brass #118 MAIN FUEL JET, stock size for all XJ750 Police (24L and 37H) models, each:
    $ 8.95

    HCP10606SET4 Aftermarket Hitachi brass #118 MAIN FUEL JETS, set of 4:
    $ 34.95


    HCP8365 Aftermarket Hitachi brass #120 MAIN FUEL JET, stock size for all XJ750 North American and UK/European models except the 1984 XJ750RL models, each:
    $ 8.95

    HCP8365SET4 Aftermarket Hitachi brass #120 MAIN FUEL JETS, set of 4:
    $ 34.95


    HCP10607 Aftermarket Hitachi brass #122 MAIN FUEL JET, stock size for 1986 XV1000 models (on the #1 carb only), each:
    $ 8.95

    HCP10607SET4 Aftermarket Hitachi brass #122 MAIN FUEL JETS, set of 4:
    $ 34.95


    HCP10608 Aftermarket Hitachi brass #124 MAIN FUEL JET, stock size for 1981-83 XV750 models (on the front cylinder carb only), 1986 XV700 models (on the #1 carb only), 1981-82 some XV920RH/RJ models, and 1984 XV1000 models (on the #1 carb only), each:
    $ 8.95

    HCP10608SET4 Aftermarket Hitachi brass #124 MAIN FUEL JETS, set of 4:
    $ 34.95


    HCP10609 Aftermarket Hitachi brass #126 MAIN FUEL JET, stock size for 1981-83 some XV920 models, each:
    $ 8.95

    HCP10609SET4 Aftermarket Hitachi brass #126 MAIN FUEL JETS, set of 4:
    $ 34.95


    HCP10610 Aftermarket Hitachi brass #128 MAIN FUEL JET, stock size for 1982-83 XV920 some models, 1984-86 XV700 some models, 1984 XV1000 models (on the #2 carb only), and 1986 XV1000 models (on the #2 carb only), each:
    $ 11.95

    HCP10610SET4 Aftermarket Hitachi brass #128 MAIN FUEL JETS, set of 4:
    $ 46.95


    HCP10611 Aftermarket Hitachi brass #130 MAIN FUEL JET, not an original size, used for fuel mixture tuning purposes only, each:
    $ 11.95

    HCP10611SET4 Aftermarket Hitachi brass #130 MAIN FUEL JETS, set of 4:
    $ 46.95


    HCP10612 Aftermarket Hitachi brass #132 MAIN FUEL JET, 1981-83 XV750 models (on the rear cylinder carb only), each:
    $ 11.95

    HCP10612SET4 Aftermarket Hitachi brass #132 MAIN FUEL JETS, set of 4:
    $ 46.95


    HCP11152 Aftermarket Hitachi brass #134 MAIN FUEL JET, not an original size, used for fuel mixture tuning purposes only, each:
    $ 11.95

    HCP11152SET4 Aftermarket Hitachi brass #134 MAIN FUEL JETS, set of 4:
    $ 46.95



    xx3) Aftermarket Hitachi main fuel jet SPACER WASHER, round flat copper washer goes under the head of the main fuel jet. Perfectly replaces missing or bowed originals on all HSC32/33/40-series carbs.

    HCP887 Aftermarket Hitachi carbs main fuel jet SPACER WASHER, each:
    $ 6.95

    HCP887SET4 Aftermarket Hitachi carbs main fuel jet SPACER WASHERS, set of 4:
    $ 24.95




    HITACHI MAIN AIR JETS:

    The main air jets on all Hitachi HSCxx series carbs are located under the vacuum piston diaphram, and are a small, brass "headless" screw-in jet. On some model carbs, these air jets live under a small, curved flay metal "cover plate" which is retained by a special shouldered screw (most later-model Hitachi carbs seem to have dispensed with this air jet cover plate, although its threaded mounting hole still remains in the carb body).

    Replacement Hitachi main air jets are now available for these model carbs, in both their original sizes and in optional "tuning" sizes for use with pod filters or other special tuning purposes.


    #50: all XJ650 models except Police models.

    #55: all XJ650 Police (37G) models.

    #70: all XJ700 non-X models, XJ750RL Seca models, and XJ750E-II models.

    #80: all 1981-83 XJ750 North American models, 1981-84 XJ750 UK/European (11M) models, and XJ750 Police (24L and 37H) models.


    NOTE: the Haynes workshop manual for the XJ650 and XJ750 models has the incorrect placement noted for these air jets----the main air jet and pilot air jets are reversed in their picture and caption. Just remember that the main air jet goes directly above the main fuel jet, and is thus located in the "center" of the three holes in this area:

    http://www.xjbikes.com/forums/threads/carb-trouble.90485/page-2


    HCP6305 Aftermarket Hitachi brass MAIN AIR JET #40, not an original size, used for fuel mixture tuning purposes only. Each:
    $ 11.95

    HCP6305SET4 Aftermarket Hitachi brass MAIN AIR JETS #40, set of 4:
    $ 46.95


    HCP6306 Aftermarket Hitachi brass MAIN AIR JET #45, not an original size, used for fuel mixture tuning purposes only. Each:
    $ 11.95

    HCP6306SET4 Aftermarket Hitachi brass MAIN AIR JETS #45, set of 4:
    $ 46.95


    HCP6307 Aftermarket Hitachi brass MAIN AIR JET #50, original size for all XJ650 (except 37G Police bikes) models. Each:
    $ 11.95

    HCP6307SET4 Aftermarket Hitachi brass MAIN AIR JETS #50, set of 4:
    $ 46.95


    HCP6308 Aftermarket Hitachi brass MAIN AIR JET #55, correct for XJ650 Police (37G) models. Each:
    $ 11.95

    HCP6308SET4 Aftermarket Hitachi brass MAIN AIR JETS #55, set of 4:
    $ 46.95


    HCP6309 Aftermarket Hitachi brass MAIN AIR JET #60, not an original size, used for fuel mixture tuning purposes only. Each:
    $ 11.95

    HCP6309SET4 Aftermarket Hitachi brass MAIN AIR JETS #60, set of 4:
    $ 46.95


    HCP6310 Aftermarket Hitachi brass MAIN AIR JET #65, not an original size, used for fuel mixture tuning purposes only. Each:
    $ 11.95

    HCP6310SET4 Aftermarket Hitachi brass MAIN AIR JETS #65, set of 4:
    $ 46.95


    HCP6311 Aftermarket Hitachi brass MAIN AIR JET #70, original size for all XJ700 non-X (air-cooled) models, XJ750RL Seca models, and XJ750E-II models. Each:
    $ 11.95

    HCP6311SET4 Aftermarket Hitachi brass MAIN AIR JETS #70, set of 4:
    $ 46.95


    HCP6312 Aftermarket Hitachi brass MAIN AIR JET #75, not an original size, used for fuel mixture tuning purposes only. Each:
    $ 11.95

    HCP6312SET4 Aftermarket Hitachi brass MAIN AIR JETS #75, set of 4:
    $ 46.95


    HCP6313 Aftermarket Hitachi brass MAIN AIR JET #80, original size for all 1981-83 XJ750 North American models, 1981-84 XJ750 UK/European (11M) models, and XJ750 Police (24L and 37H) models. Each:
    $ 11.95

    HCP6313SET4 Aftermarket Hitachi brass MAIN AIR JETS #80, set of 4:
    $ 46.95


    HCP6314 Aftermarket Hitachi brass MAIN AIR JET #85, not an original size, used for fuel mixture tuning purposes only. Each:
    $ 11.95

    HCP6314SET4 Aftermarket Hitachi brass MAIN AIR JETS #85, set of 4:
    $ 46.95


    HCP6315 Aftermarket Hitachi brass MAIN AIR JET #90, not an original size, used for fuel mixture tuning purposes only. Each:
    $ 11.95

    HCP6315SET4 Aftermarket Hitachi brass MAIN AIR JETS #90, set of 4:
    $ 46.95




    HITACHI PILOT FUEL JETS:

    ff) Aftermarket Hitachi PILOT FUEL JET, sizes as follows, fits all XJ650 (except Turbo), all XJ750, all XJ700 (exc. "X") models, and all XV (Virago) models using Hitachi HSC40-series carbs.

    NOTE: stock Hitachi XJ series carbs used the following original sizes:

    #36.5: all XJ700 non-X models.

    #40: all 1980-83 XJ650 USA models, 1980-81 XJ650 Canadian models, 1982 XJ650RJ and RJC Seca Canadian models, 1980-82 XJ650 UK/European (4K0) models, 1981-83 all XJ750 USA models, XJ750E-II models, and 1984 XJ750RL Seca (Canada) models.

    #41: all 1984 XJ750RL Seca (Australia), all 1981-83 XV750, and XV920 models

    #43: all 1982-84 XJ650 Canadian models, 1982-84 XJ650 UK/European (11N and 14R) models, 1981-83 XJ750 Maxim, Midnight Maxim Canadian models, 1981-84 XJ750 UK/European (11M) models, and XJ750 Police (24L and 37H) models.

    #45: all XJ650 Police (37G) models.

    Any of the fuel jet sizes can also be used for "tuning" or re-jetting purposes when changing intakes or exhaust systems.



    NOTE: ensuring that your pilot fuel circuit is internally clear and free is one of the most difficult tasks to perform on these carbs due to its incredibly small size (so fuel varnish will accumulate and solidify in there over time):

    http://www.xj4ever.com/inside your carbs.pdf

    To make sure that your internal pilot fuel circuit is truly “zestfully clean” after your clearing efforts:

    1. Drill out an old pilot fuel jet so that the straw from the carb cleaner fits snuggly in the hole (or some other suitable method of “sealing off” a straw into the pilot fuel jet passage where the jet screws into the carb body).
    2. Leave the pilot air jet in, but block it off with a wooden q-tip that is covered with a bit of heat shrink tubing (or use your finger to firmly block it off).
    3. Install the pilot screw without its o-ring, and set it to about 2.5 turns out from soft bottoming.
    4. Blast the carb cleaner through the modified pilot jet and it should look something like this:



    By the way, when using the spray-stream method of checking the passage, don't even THINK of putting your eye or face anywhere even NEAR the outflow path, unless you like a painful and potentially serious trip to the emergency room.


    HCP6321 Aftermarket Hitachi brass #36.5 PILOT FUEL JET, original size for all XJ700 non-X (air-cooled) models, each:
    $ 8.95

    HCP6321SET4 Aftermarket Hitachi brass #36.5 PILOT FUEL JETS, set of 4:
    $ 34.95


    HCP13606 Aftermarket Hitachi brass #38 PILOT FUEL JET, not an original size, used for fuel mixture tuning purposes only, each:
    $ 8.95

    HCP13606SET4 Aftermarket Hitachi brass #38 PILOT FUEL JETS, set of 4:
    $ 34.95


    HCP13607 Aftermarket Hitachi brass #39 PILOT FUEL JET, not an original size, used for fuel mixture tuning purposes only, each:
    $ 8.95

    HCP13607SET4 Aftermarket Hitachi brass #39 PILOT FUEL JETS, set of 4:
    $ 34.95


    HCP885 Aftermarket Hitachi brass #40 PILOT FUEL JET, original size for all 1980-83 XJ650 USA models, 1980-81 XJ650 Canadian models, 1982 XJ650RJ and RJC Seca Canadian models, 1980-82 XJ650 UK/European (4K0) models, 1981-83 all XJ750 USA models, XJ750E-II models, and 1984 XJ750RL Seca (Canada) models. Each:
    $ 8.95

    HCP885SET4 Aftermarket Hitachi brass #40 PILOT FUEL JETS, set of 4:
    $ 34.95


    HCP886 Aftermarket Hitachi brass #41 PILOT FUEL JET, original size for all 1984 XJ750RL Seca (Australia), all1981-83 XV750, and XV920 models, each:
    $ 8.95

    HCP886SET4 Aftermarket Hitachi brass #41 PILOT FUEL JETS, set of 4:
    $ 34.95


    HCP6326 Aftermarket Hitachi brass #42 PILOT FUEL JET, not an original size, used for fuel mixture tuning purposes only, each:
    $ 8.95

    HCP6326SET4 Aftermarket Hitachi brass #42 PILOT FUEL JETS, set of 4:
    $ 34.95


    HCP6320 Aftermarket Hitachi brass #43 PILOT FUEL JET, original size for all 1982-84 XJ650 Canadian models, 1982-84 XJ650 UK/European (11N and 14R) models, 1981-83 XJ750 Maxim, Midnight Maxim Canadian models, 1981-84 XJ750 UK/European (11M) models, and XJ750 Police (24L and 37H) models, each:
    $ 8.95

    HCP6320SET4 Aftermarket Hitachi brass #43 PILOT FUEL JETS, set of 4:
    $ 34.95


    HCP24234 Aftermarket Hitachi brass #44 PILOT FUEL JET, not an original size, used for fuel mixture tuning purposes only, each:
    $ 8.95

    HCP24234SET4 Aftermarket Hitachi brass #44 PILOT FUEL JETS, set of 4:
    $ 34.95


    HCP9661 Aftermarket Hitachi brass #45 PILOT FUEL JET, original size for all XJ650 Police (37G) models, each:
    $ 8.95

    HCP9661SET4 Aftermarket Hitachi brass #45 PILOT FUEL JETS, set of 4:
    $ 34.95


    HCP9815 Aftermarket Hitachi brass #46 PILOT FUEL JET, not an original size, used for fuel mixture tuning purposes only, each:
    $ 11.95

    HCP9815SET4 Aftermarket Hitachi brass #46 PILOT FUEL JETS, set of 4:
    $ 46.95


    HCP9816 Aftermarket Hitachi brass #47 PILOT FUEL JET, not an original size, used for fuel mixture tuning purposes only, each:
    $ 11.95

    HCP9816SET4 Aftermarket Hitachi brass #47 PILOT FUEL JETS, set of 4:
    $ 46.95


    HCP12616 Aftermarket Hitachi brass #50 PILOT FUEL JET, not an original size, used for fuel mixture tuning purposes only, each:
    $ 11.95

    HCP12616SET4 Aftermarket Hitachi brass #50 PILOT FUEL JETS, set of 4:
    $ 46.95



    HITACHI PILOT AIR JETS:

    The pilot air jets on all Hitachi HSCxx series carbs are located under the vacuum piston diaphram, and are a small, brass "headless" screw-in jet. On some model carbs, these air jets live under a small, curved "cover plate" which is retained by a special shouldered screw (most later-model Hitachi carbs seem to have dispensed with this air jet cover plate, although its threaded mounting hole still remains in the carb body).

    Replacement Hitachi pilot air jets are now available for these model carbs, in both their original sizes and in optional "tuning" sizes for use with pod filters or other special tuning purposes.


    #195: all 1980-81 all XJ650 North American models, all 1982 XJ650RJ and RJC Seca, all 1980-82 XJ650 UK/European (4K0 and 4K1) models, and all XJ650 Police (37G) and XJ750 Police (24L and 37H) models.

    #205: all 1982-84 XJ650 Maxim North American models, 1982-84 XJ650 UK/European (11N) models, 1981-83 XJ750 Canadian models, and 1981-84 XJ750 UK/European (11M) models.

    #210: all XJ700 non-X models.

    #225: all 1982 XJ650 UK/European (14R) models, all 1981-83 XJ750 USA models, XJ750E-II models, and XJ750RL models.


    NOTE: the Haynes workshop manual for the XJ650 and XJ750 models has the incorrect placement noted for these air jets----the main air jet and pilot air jets are reversed in their picture and caption. Just remember that the main air jet goes directly above the main fuel jet, and is thus located in the "center" of the three holes in this area:

    http://www.xjbikes.com/forums/threads/carb-trouble.90485/page-2


    HCP6289 Aftermarket Hitachi brass PILOT AIR JET #175, not an original size, used for fuel mixture tuning purposes only. Each:
    $ 11.95

    HCP6289SET4 Aftermarket Hitachi brass PILOT AIR JETS #175, set of 4:
    $ 46.95


    HCP6290 Aftermarket Hitachi brass PILOT AIR JET #180, not an original size, used for fuel mixture tuning purposes only. Each:
    $ 11.95

    HCP6290SET4 Aftermarket Hitachi brass PILOT AIR JETS #180, set of 4:
    $ 46.95


    HCP6291 Aftermarket Hitachi brass PILOT AIR JET #185, not an original size, used for fuel mixture tuning purposes only. Each:
    $ 11.95

    HCP6291SET4 Aftermarket Hitachi brass PILOT AIR JETS #185, set of 4:
    $ 46.95


    HCP6292 Aftermarket Hitachi brass PILOT AIR JET #190, not an original size, used for fuel mixture tuning purposes only. Each:
    $ 11.95

    HCP6292SET4 Aftermarket Hitachi brass PILOT AIR JETS #190, set of 4:
    $ 46.95


    HCP6293 Aftermarket Hitachi brass PILOT AIR JET #195, original size for all 1980-81 all XJ650 North American models, all 1982 XJ650RJ and RJC Seca, 1980-82 XJ650 UK/European (4K0 and 4K1) models, and some XJ750 Euro models. Each:
    $ 11.95

    HCP6293SET4 Aftermarket Hitachi brass PILOT AIR JETS #195, set of 4:
    $ 46.95


    HCP6294 Aftermarket Hitachi brass PILOT AIR JET #200, not an original size, used for fuel mixture tuning purposes only. Each:
    $ 11.95

    HCP6294SET4 Aftermarket Hitachi brass PILOT AIR JETS #200, set of 4:
    $ 46.95


    HCP6295 Aftermarket Hitachi brass PILOT AIR JET #205, original size for all 1982-84 XJ650 Maxim North American models, 1982-84 XJ650 UK/European (11N) models, 1981-83 XJ750 Canadian models, and 1981-84 XJ750 UK/European (11M) models. Each:
    $ 11.95

    HCP6295SET4 Aftermarket Hitachi brass PILOT AIR JETS #205, set of 4:
    $ 46.95


    HCP6296 Aftermarket Hitachi brass PILOT AIR JET #210, original size for all 1985-86 XJ700 air-cooled engines. Each:
    $ 11.95

    HCP6296SET4 Aftermarket Hitachi brass PILOT AIR JETS #210, set of 4:
    $ 46.95


    HCP6297 Aftermarket Hitachi brass PILOT AIR JET #215, not an original size, used for fuel mixture tuning purposes only. Each:
    $ 11.95

    HCP6297SET4 Aftermarket Hitachi brass PILOT AIR JETS #215, set of 4:
    $ 46.95


    HCP6298 Aftermarket Hitachi brass PILOT AIR JET #220, not an original size, used for fuel mixture tuning purposes only. Each:
    $ 11.95

    HCP6298SET4 Aftermarket Hitachi brass PILOT AIR JETS #220, set of 4:
    $ 46.95


    HCP6299 Aftermarket Hitachi brass PILOT AIR JET #225, original size for all 1982 XJ650 UK/European (14R) models, all 1981-83 XJ750 USA models, XJ750E-II models, and XJ750RL models. Each:
    $ 11.95

    HCP6299SET4 Aftermarket Hitachi brass PILOT AIR JETS #225, set of 4:
    $ 46.95


    HCP6300 Aftermarket Hitachi brass PILOT AIR JET #230, not an original size, used for fuel mixture tuning purposes only. Each:
    $ 11.95

    HCP6300SET4 Aftermarket Hitachi brass PILOT AIR JETS #230, set of 4:
    $ 46.95


    HCP6301 Aftermarket Hitachi brass PILOT AIR JET #235, not an original size, used for fuel mixture tuning purposes only. Each:
    $ 11.95

    HCP6301SET4 Aftermarket Hitachi brass PILOT AIR JETS #235, set of 4:
    $ 46.95


    HCP6302 Aftermarket Hitachi brass PILOT AIR JET #240, not an original size, used for fuel mixture tuning purposes only. Each:
    $ 11.95

    HCP6302SET4 Aftermarket Hitachi brass PILOT AIR JETS #240, set of 4:
    $ 46.95


    HCP6303 Aftermarket Hitachi brass PILOT AIR JET #245, not an original size, used for fuel mixture tuning purposes only. Each:
    $ 11.95

    HCP6303SET4 Aftermarket Hitachi brass PILOT AIR JETS #245, set of 4:
    $ 46.95


    HCP6304 Aftermarket Hitachi brass PILOT AIR JET #250, not an original size, used for fuel mixture tuning purposes only. Each:
    $ 11.95

    HCP6304SET4 Aftermarket Hitachi brass PILOT AIR JETS #250, set of 4:
    $ 46.95




    WHAT ABOUT RE-JETTING FOR PODS, ETC?:

    Before we even start down this bumpy road, let's get this out of the way: changing the mufflers (only) will generally not require re-jetting, as the stock mufflers are pretty darn free-flowing as it is. The major airflow restrictions (by design) in these engines is on the INTAKE side (the airbox system and its pleated paper filter). Changing to a high-flow air filter (like a K&N) will definitely require increased fuel jet sizing.

    That being said, all of these bikes were jetted a bit lean from the factory, in order to satisfy EPA emissions requirements of that era. So even a stock engine can benefit from slightly larger fuel jets; for example, a stock XJ650 non-Turbo USA model, increasing fuel jet sizes to #112 on the mains (from the stock #110 size) and to a #41 on the pilot (stock is a #40 size) can be beneficial. Note that the pilot jet size is not as critical as the main jet size, since the pilot circuit mixture screw allows you to “open up” the pilot circuit independent of the jet size.


    But what about when you do make other intake/exhaust system changes? It's a question we get asked often and unfortunately, one that we cannot answer honestly about your specific bike besides with "it depends".

    Which is a nice way of saying "you're about to enter the seventh circle of hell......."!

    Carb jet tuning required by aftermarket modifications is somewhat of a black art, part science, part skill, part luck. It depends on the current state of tune of your engine, your altitude, the mix of aftermarket parts on your bike, etc........a lot of variables.

    The best advice we can offer is: Just Say No!. Don't do it! Leave everything stock!

    But, since most people---with good reason, I might add---don't always listen to our well-intentioned advice, then the next best recommendation we can offer is: "if you want more power get a bigger bike!".

    And since that doesn't cut it with many owners, either, for the remaining stalwarts out there who insist on "experimenting" with aftermarket intake and exhaust systems, here's the best information that we've come across to give you some GUIDANCE, which you should take as just that, and not as ANSWERS, because it isn't!

    Definitely not plug-and-play:



    And some pod filters make a difficult situation even worse.........read all about it:

    http://www.caferacer.net/forum/technical/19639-pod-filter-thread-geeto.html

    Yoji himself cautions against it:

    http://xjbikes.com/forums/index.php?attachments/mikuni-article-jpg.15101



    Also, if you’ve ever wondered what the numbers on your jets refer to:

    - on Hitachi fuel jets, the numbers refer to the actual physical size of the passage hole expressed in millimeters, i.e. a #114 fuel jets is 1.14mm in diameter, a #42 fuel jet is 0.42mm in diameter, etc.

    - on Mikuni fuel jets, the numbers are a measurement of the volume (cc’s of gasoline) that will flow thru the jet when poured in from a height of 50cm.

    - we do not know what air jet numbers refer to…….although we suspect it is a volume of air that can pass through the jet at some level of vacuum. Anyone who has insight into this issue please let us know more!



    MAIN FUEL JET SIZE CHANGES NEEDED PER TYPICAL MODIFICATION:

    Typical Exhaust Changes:

    +2 main fuel jet size for custom 4-into-2 exhaust

    or

    +4 main fuel jet sizes for 4-into-1 exhaust

    or

    +4 main jet sizes for no muffler (open headers)


    Typical Intake Changes:

    +2 main fuel jet sizes for single K&N filter (inside a stock airbox)

    or

    +2 main fuel jet size for drilling holes in the airbox with stock filter

    or

    +4 main fuel jet sizes for individual pod filters (no airbox)


    Additional changes:

    - Add up all the main fuel jet size increases and subtract 2 sizes.

    - Decrease main fuel jet size by 2 sizes per every 2000' above sea level.

    - Under a mis-match condition, such as when using pod filters with a 100% stock exhaust, or 4-into-1 header with stock filter and air box, then subtract 2 main fuel jet sizes.



    PILOT FUEL JET SIZES CHANGES NEEDED PER TYPICAL MODIFICATION:

    Pilot fuel jet size changes are related only to the change in main fuel jet sizes according to the main fuel jet size formula described above. Note that this pilot fuel jet rule is for the main fuel jet size change BEFORE any main fuel jet altitude compensation is factored in:

    Increase the pilot fuel jet size +1 for every +3 main fuel jet size increases.

    Additional changes:

    - Decrease pilot fuel jet size by 1 for every 6000' above sea level.



    PRECAUTIONS:

    - Make sure your carbs are in perfect working order before making ANY jet changes....meaning fully cleaned internally and rebuilt, operating properly in their stock configuration, proper sized air jets and needles, etc. Otherwise, you'll like find that all of your efforts are going to be a HUGE waste of time.

    - Check plug color often and adjust as needed, 2 main fuel jet sizes at a time and 1 pilot fuel jet size at a time. Bright white plug insulators are a sign of an overly lean fuel mixture condition and WILL cause damage to your engine over time, up to and including engine seizure!

    - Synch the carbs after each jet change.

    - Make sure the floats are set correctly

    - Seriously consider purchasing a Colortune Plug Tuning kit.

    - You may find it necessary to make changes to the size or shimming of the main jet needle. There are no guidelines on what or how to do these changes, this is true trial-and-error tuning!



    EXAMPLE:

    A 1982 XJ750RJ Seca using an aftermarket Supertrapp 4-into-1 exhaust and a single K&N air filter in the stock, unmodified airbox. Bike is primarily operated at an altitude of 2600 feet above sea level.

    XJ750 Seca Stock Hitachi HSC32 Carb Jetting:

    #120 Main Fuel Jet
    #40 Pilot Fuel Jet
    #50 Main Air Jet
    #225 Pilot Air Jet
    Y-13 Needle


    MAIN FUEL JET SIZE CALCULATIONS:

    Changes made:

    Exhaust:
    4 into 1 with Supertrapp = +4 Sizes Main Fuel Jet

    Intake:
    K&N Pod Filters = +4 sizes Main Fuel Jet
    ----------------------------
    Equals: +8 main fuel jet sizes above baseline
    Subtract: -2 main fuel jet size per formula above
    ----------------------------
    Equals: +6 main fuel jet sizes due to modifications, thus:

    Stock main fuel jet size is: #120
    + 6 additional sizes
    = a #126 main fuel jet size
    ---------------------------
    Subtract: -2 main fuel jet sizes for Altitude of 2500' Average

    = #126 calculated from above
    -2 jet sizes for altitude adjustment

    = a #124 main fuel jet size.


    PILOT FUEL JET SIZE CALCULATIONS:

    The formula is: +1 pilot jet size increase for every +3 main jet sizes increased.

    Stock pilot fuel jet size is: #40
    + 2 additional jet sizes (since we went up +6 main fuel jet sizes before the altitude compensation was factored in):

    = a #42 pilot fuel jet size.

    Note that no altitude compensation is needed on the pilot fuel jet since our elevation is less than 6000' a-s-l.


    ------------------------------

    RESULT:

    A #124 Main and #42 Pilot is A GOOD STARTING POINT.

    ******************************************************

    Note that the above calculations do NOT take into account any possible changes in the sizes of the main or pilot air jets, the main needle or main needle jet size, and thus are additional variables and opportunities for tuning excellence. These are areas which are largely unexplored by most tuners, but logically should allow for additional fine tuning or additional rage and frustration.........


    Normally, changing to an aftermarket exhaust does NOT require re-jetting, (or minimal re-jetting) as almost ALL of the airflow restriction in the airflow path thru the engine (meaning: ATMOSPHERE > AIRBOX > FILTER > AIRBOX BOOTS > CARBS > INTAKE MANIFOLDS > CYLINDER HEAD PASSAGES > EXHAUST SYSTEM > BACK OUT INTO THE ATMOSPHERE) is within the intake side of this air flow path, and primarily within the stock airbox/air filter. Your stock EXHAUST system can already flow more air volume than the stock INTAKE system allows.

    Thus changing only the stock EXHAUST system, with no changes to the intake side of the heads, normally makes NO DIFFERENCE IN TOTAL AIRFLOW, and "no difference in total airflow" means "no difference in TOTAL FUEL FLOW" either, and thus bigger jets are not needed.


    But once you start freeing up the INTAKE side of the entire system, you will produce more system airflow, even with a stock exhaust system (because, the stock exhaust system has the capability to flow more air through it than what the stock intake system allows).

    This is why re-jetting is usually needed even if you keep the stock airbox and the stock exhaust, but use a K&N low-restriction filter, or even if you drill holes in the stock airbox, or leave the filter lid off.

    All such actions free up the intake side airflow restrictions; the stock exhaust will move this additional airflow, and without providing addition FUEL flow to match the increased airflow (within limits, an engine will gobble up the maximum amount of airflow that it can; an internal combustion engine is actually just a self-powered AIR PUMP) then the engine will run "lean"---meaning not enough fuel to match the amount of airflow that the engine can (and now will) gulp.

    Most pod type filters allow for vastly increased airflow, and thus require fuel re-jetting, and although no one really talks much about it, probably also require AIR JET changes to match the additional fuel flow, but since no one likes to deal with two parameters at once, it becomes a "tuning nightmare".


    BUT, when you read all of the common symptoms of people who use pods, you quickly come to the conclusion that it's not possible to reproduce the stock "smooth in all rpm ranges" engine response. The reality is that you SHOULD be able to match it pretty darn closely, even with the increased airflow through the system, but ONLY changing the fuel jets isn't going to accomplish that. There are also air jets in the system, and they are there for a reason, as well as needle tapers and vacuum piston responsiveness issues.


    For further insights and understanding, the Holy Grail (meaning: the whole miserable, un-varnished truth of what a real chore carb tuning is going to be, written by people who actually know what they're talking about, rather than by people who are trying to sell you something) can be found at:

    www.factorypro.com

    and then click on the "Product Support/Technical Support" link at the top of the page, then on the "Motorcycle Tuning Tech" link, and then the "CV Carb Tuning" link........and then read, weep, study, and do....if you still dare to! HINT: if reading through it makes you think to yourself "sheesh, this sounds like an incredible amount of effort!", well, you're right! That's just some of the joys (and pitfalls) of getting to play "tuning engineer", which is what you're going to be doing. Yamaha probably has 10 of those types of guys on staff, and millions of dollars of test equipment, both physical and computer-aided, that allowed them to get the mixture settings just right---from an overall drivability AND power output standpoint----and now, since you're changing the airflow parameters thru the engine, you'll have to figure it all out "from scratch", but WITHOUT the benefit of 10 trained engineers and all that test equipment and experience.

    That's why we warn you that setting up a bike for pods can be quite a bit of trial-and-error procedure. You can make the calculations according to what is shown in that guideline and then order the jets that the "formula" recommends, and that should serve as a good STARTING POINT............you may (or may not!) have to do more tuning and trial-and-erroring substitution of different jet sizes, etc. to get it performing to you satisfaction, with the recognition that you may ALWAYS end up with a situation that has some kinds of trade-offs.....lazy at the lower end but runs well at mid/upper-ranges, or runs well at the lower end but a "flat-spot" at some other rpm range, etc. Unfortunately there is no magic formula........you might want to read through the factorypro.com article that I list at the end of that section, and you will get a better understanding of what is involved to get the carbs set-up properly in a non-stock configuration.

    As one of our favorite experts says about pod filters: "Get a Rubik's Cube instead.....it's less trouble and actually has an eventual solution!"
     
    Last edited: Dec 1, 2021 at 1:04 AM
  4. chacal

    chacal Moderator Moderator Supporting Vendor Premium Member

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    HITACHI MAIN FUEL JET NEEDLES:

    Attached to the vacuum piston assembly is the MAIN JET NEEDLE, and as the vacuum piston is raised or lowered due to the vacuum signal through the carb throat, the main jet needle is raised or lowered into the brass emulsion tube (also described as the "main jet" or "power valve" in some technical literature). These jet needles control the overall fuel flow in the main jet circuit of each carb.

    These precisely made aluminum replacement needles correctly replace worn, damaged, or incorrectly sized original needles in all Hitachi HSC32 or HSC33 series carbs. The needle "size" is inscribed on the shaft of the needle, just below the plastic head cap. Although all needles are interchangeable between any type Hitachi HSC32 or HSC33 series carb, their different "sizes" are designed to be used in specific applications as determined by factory design engineers.

    However, as long as all four carbs on your bike are using the same size needle, you can swap needle sizes between different carbs. So, for instance, you can use the Y-20 size needle (XJ700 models using HSC33 series carbs) in an XJ750 engine (which normally used the Y-13 size needle in their HSC32 series carbs). This type of swapping of needles can be useful in situation where you may wish to fine-tune the fuel mixture in an engine, for instance when changing the air-flow through an engine using pod filters and/or aftermarket exhaust systems.

    NOTE: original Hitachi main jet needles have a depression on the bottom of the plastic cap, and this should be oriented with the half-circle bump inside the diaphram.


    Original main needle size configurations are as follows:

    Y-10: used on all USA market XJ650 (except Turbo) models, 1982-84 XJ650 Canadian bikes, and 1982 XJ650 Euro (model 14R) carbs.

    Y-11: used on all 1980-81 XJ650 Euro (model 4K0 and 4K1) and XJ650 Police (37G) carbs.

    Y-12: used on all Canadian 1980-81 XJ650 Maxim, Midnight Maxim, and Canadian 1982 XJ650RJC Seca (non-yics) models.

    Y-13: used on all USA market XJ750 (1981-83) models.

    Y-14: used on all non-USA market XJ750 (1981-84, except XJ750RL and XJ750E-II) models and XJ750 Police (24L and 37H) models.

    Y-17: used on all XJ750E-II models.

    Y-18: used on all XJ750RL Seca models (1984) only.

    Y-20: used on all XJ700 air-cooled models.

    others: all other Y-xx size needles are used on other model Hitachi HSC series carbs, such as XV750, XV920, etc. models.


    Original main needle size characteristics:

    As noted previously, as long as all four needles are the same between all the carbs on your engine, you can swap around different sizes for "tuning" purposes. Although we have no guidelines nor experience available to assist you in your tuning exercises, we can offer these needle shape characteristics to help you in analyzing your needs. Be aware that the thickness of the needle at any position along its length determines the fuel flow through the main fuel circuit, and the rate of change of the needle thickness (the "taper" amount) determines when and how much the needle allows the fuel mixture to become leaner or richer.

    - the Y-20 needles (XJ700 models) are "skinnier" at the bottom of their shaft than either the Y-13 (XJ750) or the Y-10 needles (XJ650). Thus the Y-20 needles are "richer" at higher rpm ranges than either the Y-10 or Y-13 needles.

    - the Y-10 needles (XJ650 models) are "skinnier" at the bottom of their shaft than either the XJ750 Y-13 or Y-14 needles. Thus the Y-10 needles are "richer" than either the Y-13 or Y-14 needles, although the Y-20 (XJ700) needles are even richer, but only at wide-open throttle positions.

    - the Y-11 needles (XJ650 Euro) are a bit leaner than Y-10 all the way through the rpm (needle position) range, especially at wide-open-throttle position. They are a bit richer than Y-13 needles, except at the wide-open-throttle position.

    - the Y-13 needles (USA XJ750) are "richer" than the Y-20 needles (XJ700) throughout the rest of their overall length.

    - the Y-14 needles (non-USA XJ750) are "richer" than the Y-13 needles (USA market XJ750) at 3/4-throttle positions and beyond; otherwise, almost identical to the Y-13 needle.

    - the HCP20965 needles (custom) are the "richest" at all throttle positions except for the wide-open-throttle position characteristics of the Y-20 needles (XJ700).

    - Summary: of all the stock needles, the Y-10 (XJ650) needles are, except for their lowest section, the "richest" stock needles available. The Y-20 (XJ700) needles are the "richest" needles available for their lowest section, but then quickly become the "leanest" needles past their lowest 1/3 range of length. The HCP20965 needles are the richest needles available at all throttle positions overall, and people who are running pods and other modifications on XJ700 and XJ750 engines may wish to keep this thought in mind when trying to tune their engines.


    One last thought: remember than fuel system tuning is mostly an art, rather than a science. The different size needles can produce very differing characteristics on any given engine, not only due to their relative "richness" or "leaness" characteristics, but also their rate of richness or leaness at any given needle position, along with the differences in main fuel jet sizing.


    HCP8420 Aftermarket Hitachi Y-10 MAIN JET NEEDLE, correct for all USA market XJ650 (except Turbo) models, 1982-84 XJ650 Canadian bikes, and 1982 XJ650 Euro (model 14R) carbs. Original style aluminum shafts and plastic head cap. Each:
    $ discontinued

    HCP8420SET4 Aftermarket Hitachi Y-10 MAIN JET NEEDLES, set of 4:
    $ discontinued



    HCP15784 Aftermarket Hitachi Y-10 MAIN JET NEEDLE, correct for all USA market XJ650 (except Turbo) models, 1982-84 XJ650 Canadian bikes, and 1982 XJ650 Euro (model 14R) carbs. Brass needle with head cap. Each:
    $ 19.95

    HCP15784SET4 Aftermarket Hitachi Y-10 MAIN JET NEEDLES, set of 4:
    $ 69.95



    HCP17170 Aftermarket Hitachi Y-11 MAIN JET NEEDLE, correct for all 1980-81 XJ650 Euro (model 4K0 and 4K1) carbs. Brass needle with head cap. NOTE: Y-11 needles are a bit leaner than the Y-10 size needles (above) especially at wide-open throttle. The Y-11 needles are richer than the Y-13 size needles (below) except at wide-open-throttle positions, where they are a bit leaner. These differences can be used (via trial-and-error!) to facilitate further fine-tuning of your carbs, especially is "pod" air filter elements are used. Each:
    $ 19.95

    HCP17170SET4 Aftermarket Hitachi Y-11 MAIN JET NEEDLES, set of 4:
    $ 74.95



    HCP18211 Aftermarket Hitachi Y-12 MAIN JET NEEDLE, correct for all Canadian 1980-81 XJ650 Maxim and Midnight Maxim models, and Canadian 1982 XJ650RJC Seca (non-yics) models. Original style aluminum shafts and plastic head cap. Each:
    $ discontinued

    HCP18211SET4 Aftermarket Hitachi Y-12 MAIN JET NEEDLES, set of 4:
    $ discontinued



    HCP17588 Aftermarket Hitachi Y-13 MAIN JET NEEDLE, correct for all USA market XJ750 (1981-83) models. Original style aluminum shafts and plastic head cap. Each:
    $ 19.95

    HCP17588SET4 Aftermarket Hitachi Y-13 MAIN JET NEEDLES, set of 4:
    $ 74.95



    HCP17600 Aftermarket Hitachi Y-14 MAIN JET NEEDLE, correct for all non-USA market air-cooled XJ750 models (1981-84, except XJ750RL), and XJ750 Police (24L and 37H) models with Hitachi carbs. Original style aluminum shafts and plastic head cap. Each:
    $ 22.95

    HCP17600SET4 Aftermarket Hitachi Y-14 MAIN JET NEEDLES, set of 4:
    $ 79.95



    HCP17589 Aftermarket Hitachi Y-20 MAIN JET NEEDLE, correct for all XJ700 (1985-86) air-cooled models with Hitachi carbs. Original style aluminum shafts and plastic head cap. Each:
    $ 19.95

    HCP17589SET4 Aftermarket Hitachi Y-20 MAIN JET NEEDLES, set of 4:
    $ 74.95



    HCP20965 Aftermarket Hitachi MAIN JET NEEDLE, correct for all models with Hitachi carbs. This needle is richer than the stock Y-10, Y-11, Y-13, Y-14, or Y-20 needles, and is a good candidate to use in modified (i.e. pods) engines to allow for the extra fuel flow required in higher air-flow situations. Original style aluminum shafts and plastic head cap. Each:
    $ 22.95

    HCP20965SET4 Aftermarket Hitachi MAIN JET NEEDLES, set of 4:
    $ 79.95




    HCP15786 Aftermarket Hitachi main jet NEEDLE TENSION SPRING, fits all XJ650 (except) Turbo, all 1981-84 XJ750 with air-cooled engines, and all XJ700 air-cooled models. Each:
    $ 5.95



    mjw1) Aftermarket Hitachi main fuel jet needle TUNING WASHERS, these precision ground stainless steel shim washers (1010 carbon steel on the HCP14511 size) are used to raise the main jet needle height slightly, in order to allow ultra-fine performance tuning modifications. Tuning washers fit under the plastic needle cap rest on the bottom of the needle bore hole in the vacuum piston. Washers are available in a variety of thickness, can be stacked, and multiple washers can be used to provide the proper tuning desired. Fits all HSC32 and HSC33 series Hitachi carbs.


    HCP14512SET4 Aftermarket 18-8 stainless steel TUNING WASHER, .025mm (.001") thick, sold in sets of 4 washers only:
    $ 5.95

    HCP14513SET8 Aftermarket 18-8 stainless steel TUNING WASHER, .050mm (.002") thick, sold in sets of 8 washers only:
    $ 9.95

    HCP14514SET8 Aftermarket 18-8 stainless steel TUNING WASHER, .075mm (.003") thick, sold in sets of 8 washers only:
    $ 9.95

    HCP14511SET8 Aftermarket 18-8 stainless steel TUNING WASHER, .100mm (.004") thick, sold in sets of 8 washers only:
    $ 9.95




    HITACHI MAIN NEEDLE JET a/k/a EMULSION TUBE:

    Called by a variety of names, the main fuel jet tube is technically known as the MAIN NEEDLE JET, although they also go by the name of "power valves", "emulsion tubes", or some choice four-letter words while you are trying to remove them from their bore hole in the carb body! These 2" long brass tubes have a series of very precise, very small holes that actually atomize the fuel from the main fuel jet around the jet needle, and are what provide the final, precise metering of the fuel mixture through the main jet.

    Commonly clogged and dirty-filthy beyond belief, they are easy to damage while removing them or during the cleaning process. If the holes are enlarged, if the end of the tube (where the needle enters it) worn or egg-shaped, or if the threads in the jet end damaged, these nozzles should be replaced, or your bike will never run properly.


    HCP8418 Aftermarket Hitachi brass MAIN NEEDLE JET or EMULSION TUBE, fits all XJ650 (except Turbo) and 1981-84 XJ750 air-cooled models with the HSC32 or HSC33 series carbs, each:
    $ 22.95

    HCP8418SET4 Aftermarket Hitachi brass MAIN NEEDLE JETS or EMULSION TUBES, fits all XJ650 (except Turbo) and 1981-84 XJ750 air-cooled models with the HSC32 or HSC33 series carbs, set of 4:
    $ 84.95



    HCP17585 Aftermarket Hitachi brass MAIN NEEDLE JET or EMULSION TUBE, fits all XJ700 air-cooled models using the HSC33 series carbs, each:
    $ 22.95

    HCP17585SET4 Aftermarket Hitachi brass MAIN NEEDLE JETS or EMULSION TUBES, fits all XJ700 air-cooled models using the HSC33 series carbs, set of 4:
    $ 84.95



    HITACHI FUEL INLET "FLOAT" VALVES:

    Original and aftermarket FUEL INLET "FLOAT" VALVE UNITS and KITS are a critical item to replace when performing a carb rebuild. Worn or damaged float valve seats or needles will cause bowl overflow and carb "flooding", making it impossible to set the fuel levels and float heights correctly, and leading to dangerous and damaging fuel overflow issues.

    NOTE on fuel inlet/float valve seats, filter screens, and needles:

    - original fuel inlet - float valve brass seats had a fuel inlet boss (where the inlet filter screen sits) of either 5.10mm (and thus uses the HCP9855 flat screen) or a 6.57mm boss with a 7.30mm "capture lip" (and this style float valve seat uses the HCP869 domed screen).

    - The HCP10 (OEM) kit comes with a screen. The screen boss on the seat is 5.10mm OD and it comes with the HCP9855 flat screen. The needle is the same length as, and is rubber-tipped, just like the original. The float valve seat washer is made of copper as original.

    - The HCP18795 kits (aftermarket) comes without a screen. The screen boss on the seat is 5.10mm OD and it accepts the HCP9855 flat screen. The needle is the same length as the OEM needle and is rubber-tipped just like the original. The float valve seat washer is made of aluminum rather than copper.

    - The HCP17176 kits comes without a screen. The screen boss on the seat is 6.57mm OD and it accepts the HCP869 domed screen. The needle is slightly longer than the OEM needle and is metal-tipped (rather than rubber-tipped like the original needle). The float valve seat washer is made of aluminum rather than copper. These metal-tipped needles are a desirable option for people who live in an area where there is a significant amount of E-85 (alcohol) fuel blended with the gasoline. Ethanol tends to soften and attack rubber products, including the rubber tip of the original style float needles, which can then cause the float valve unit to stick (closed) or leak fuel even when in the closed position.

    - The HCP1 lower end kits contain the HCP18795 float valves (above) and thus come without a screen. The screen boss on the seat is 5.10mm OD and it accepts the HCP9855 flat screen. The needle is the same length as the OEM needle and is rubber-tipped just like the original. The float valve seat washer is made of copper as original.

    - The HCP18210 lower end kits also contains the HCP18795 float valves (above) but they come with a screen. The screen boss on the seat is 5.10mm OD and it includes the HCP9855 flat screen. The needle is the same length as the OEM needle and is rubber-tipped just like the original. The float valve seat washer is made of copper as original.


    NOTE: all of the float needles that have a rubber tip also use a retaining clip to secure the needle to the float arm. Please note that the clip can be installed in two different ways (orientations). User experience indicates that the clip should be positioned so that the "open" area of the clip (that part of the clip that snaps over the ridge on the top of the needle) should be oriented towards the "back" of the carbs; in other words, the open area of the clip should be towards the airbox.

    By the way, the purpose of this clip is to prevent the rubber tip of the needle from "seizing" within the float valve seat (due to the rubber swelling), or fuel varnish forming around it (and "gluing" it to the brass seat). Since the clip is attached to the float, as the fuel bowl empties the weight of the float pulling down on the needle will tend to overcome any needle tip seizure and prevent that float valve from remaining closed, even as the float bowl empties of fuel.

    Metal-tipped needles, although not original on Hitachi carbs, were used on many original Mikuni carbs. The metal needle tips are much less prone to tip seizure and thus metal-tipped needles do not need, nor use (or even accept) the needle retaining clip.


    NOTE: on all of the float needles that use a central, spring-loaded "plunger" at the float end, please note that this plunger is designed to act as a "shock absorber" and is not normally depressed in normal operation, and the float heights and fuel levels should not be set with this plunger depressed. Doing so will result in a vastly incorrect fuel level setting and will lead to carb flooding.


    QUESTION: does it matter which style fuel inlet - float valve seat/needle/etc. is used in your carbs?

    ANSWER: Not really, although it's probably best (but not absolutely necessary) to make sure that all 4 carbs use the same style set-up. The installation of any replacement fuel inlet - float valve seats and needles will require checking and re-adjustment of the fuel level and float heights after installation. You should ALWAYS check and adjust your float levels anytime you go into your carbs----and periodically even if you don't! I know, it's a pain-in-the-tail light to adjust the float levels----but correct float levels really will insure that your bike performs at its best and will also prevent problems with carb flooding.


    HELPFUL HINT: in many cases, a float valve brass seat may get small scars, burrs, or other deformities in the area where the rubber needle tip contacts the seat opening, and thus preventing the fuel flow from being completely shut off even when the bowl is full. Such minor flaws can sometimes be polished out with some very fine (600-grit or higher) polishing paper rolled up into a very tight "cigarette" and then moved back-and-forth thru the opening. Likewise, any flaws on the internal bore of the seat......where the needle slides.....can sometimes be polished away. You should inspect the seat and needle very carefully, under good light and with strong magnification, in order to inspect these crucial parts during any rebuild process, or if carb flooding is indicated.

    And if the threaded seat in the carb body where the float valve seat screws into the carb body has been injured, or if you want to restore the threads to their like-new condition, this thread chaser tap is what you'll need:

    HCP2400 Aftermarket THREAD CHASER AND CLEAN-UP TAP, made from a high-speed titanium nitride coated steel. For the following holes: Hitachi float valve brass seat hole, and Mikuni starter / enrichment circuit (“choke”) brass plunger seat hole on all XJ550, FJ600, FZ600, YX600, XJ600, XJ650 Turbo, XJ700-X, and XJ750-X carbs.
    $ 14.95

    HCP28170 Aftermarket thread tap or EZ-out extractor TAP HANDLE, featuring offset tap handles and fully adjustable head for all m3-m12 size taps and size 0 to ½” extractors. This is the proper way to hold a tap or extractor to insure that the force is directed straight down and doesn’t “wobble” as you are cutting, reaming, or extracting. Much better than using pliers or vise-grips to hold the tool……..
    $ 17.95


    For all XJ650 (except Turbo), all XJ750 air-cooled models, all XJ700 air-cooled models, all 1984-86 XV700 Virago, all 1981-83 XV750 Virago, and all 1981-83 XV920 Virago models:

    HCP10 OEM Hitachi FUEL INLET - FLOAT VALVE ASSEMBLY, contains the fuel inlet - float valve needle with retainer clip, the brass screw-in valve seat, the seat washer, and the valve seat filter screen, each:
    $ 129.95



    HCP18795 Aftermarket Hitachi FUEL INLET - FLOAT VALVE ASSEMBLY, contains the fuel inlet - float valve needle with its retainer clip, the brass screw-in valve seat, and the seat washer. NOTE: this set contains an oem style clipped rubber-tipped needle. The HCP9855 flat float valve screen is not included and should be ordered separate. Each.
    $ 19.95

    HCP18795SET4 Aftermarket Hitachi FUEL INLET - FLOAT VALVE ASSEMBLIES, set of 4:
    $ 77.95



    HCP17176 Aftermarket Hitachi FUEL INLET - FLOAT VALVE ASSEMBLY, contains the fuel inlet - float valve needle, the brass screw-in valve seat, and the seat washer. NOTE: this set contains a non-clipped, metal-tipped needle (rather than the original rubber-tipped needle). The HCP869 domed float valve screen is not included and should be ordered separate. NOTE: these metal-tipped needles are a desirable option for people who live in an area where there is a significant amount of E-85 (alcohol) fuel blended with the gasoline. Ethanol tends to soften and attack rubber products, including the rubber tip of the original style float needles, which can then cause the float valve unit to stick (closed) or leak fuel even when in the closed position.
    $ 19.95

    HCP17176SET4 Aftermarket Hitachi FUEL INLET - FLOAT VALVE ASSEMBLIES, set of 4:
    $ 77.95



    fnv8) OEM Hitachi fuel inlet - float valve needle SEAT WASHER. This special "stepped" copper washer is needed to properly seal and space the float valve seat off of the carb body.

    HCP6 OEM Hitachi fuel inlet - float valve SEAT WASHER, each:
    $ discontinued

    HCP6SET4 OEM Hitachi fuel inlet - float valve SEAT WASHERS, set of 4:
    $ discontinued



    fnv2) Aftermarket Hitachi fuel inlet - float valve needle seat FILTER SCREEN. These small mesh screen filters snap onto the top of the float needle valve seat and help to keep crud, junk, and other kinds of cosmic debris out of the carbs. These filter screens are included in some of the replacement float needle valve assemblies and lower end rebuild kits listed above; but, if you want to re-use your original valve seats, we still recommend the replacement of these screens. Fits all Hitachi HSC32/33/40-series carbs.

    NOTE: screens are not interchangeable between different style seats, since the style and diameter of the screen seat boss is different between each type of seat. Make sure that you properly identify which style seat you have before ordering replacement filters.

    HCP9855 Aftermarket Hitachi fuel inlet - float valve needle seat FLAT FILTER SCREEN, use one per carb, for use with float valve seats that have a 5.10mm screen boss (used on some original seats, on the HCP10 oem seats, and on the HCP18795 aftermarket float valve seats). This style screen pushes straight onto the brass seat screen boss. Each:
    $ 7.95

    HCP9855SET4 Aftermarket Hitachi fuel inlet - float valve needle seat FLAT FILTER SCREENS, use one per carb, set of 4:
    $ 29.95



    HCP2644 Aftermarket Hitachi fuel inlet - float valve needle seat FLAT FILTER SCREEN, use one per carb, for use with float valve seats that have a 4.53mm screen boss (used on some original float valve seats). This style screen pushes straight onto the brass seat screen boss. Each:
    $ 7.95

    HCP2644SET4 Aftermarket Hitachi fuel inlet - float valve needle seat FLAT FILTER SCREENS, use one per carb, set of 4:
    $ 29.95



    HCP869 Aftermarket Hitachi fuel inlet - float valve needle seat DOMED FILTER SCREEN, use one per carb, for use with float valve seats that have a a 6.57mm boss with a 7.30mm "capture lip" (used on some original float valve seats and on the HCP17176 aftermarket float valve seats). This style screen "snaps" onto the capture lip of the brass seat screen boss. Each:
    $ 7.95

    HCP869SET4 Aftermarket Hitachi fuel inlet - float valve needle seat DOMED FILTER SCREENS, use one per carb, set of 4:
    $ 29.95



    HITACHI CARBS LOWER END REBUILD KITS:

    nn) Aftermarket Hitachi carbs LOWER END REBUILD KITS --- available in both a standard and deluxe version. Both kits contain the fuel inlet - float valve needle, float valve brass screw-in seat, the seat washer, and an standard bowl gasket. The standard rebuild kits feature a float seat that can use, but does NOT include, the seat filter screen. The deluxe rebuild kits contain the filter screens, already installed on the seats, and an aftermarket hi-performance bowl gasket.

    NOTE: the float valve needle that comes with these sets are approximately the same height as a factory Yamaha needle, and it may not be necessary to re-adjust the float level height after installation, but for safety and performance reasons you should always check the fuel level after any carb work or parts replacement!

    These lower-end kits contain just the basic parts you'll need if doing a quick carb re-fresh or fighting leaking fuel inlet ("float") valves. All kits fit all XJ650 (except Turbo), all XJ700 air-cooled models, and all XJ750 air-cooled models.

    For complete carb rebuild kits, see further below for our partial or complete carb rebuild kits.

    NOTE: kits that contain the original style rubber-tipped needles include the needle hanger clip. By the way, the purpose of this clip is to prevent the rubber tip of the needle from "seizing" within the float valve seat (due to the rubber swelling), or fuel varnish forming around it (and "gluing" it to the brass seat). Since the clip is attached to the float, as the fuel bowl empties the weight of the float pulling down on the needle will tend to overcome any needle tip seizure and prevent that float valve from remaining closed, even as the float bowl empties of fuel.

    Metal-tipped needles, although not original on Hitachi carbs, were used on many original Mikuni carbs. The metal needle tips are much less prone to tip seizure and thus metal-tipped needles do not need, nor use (or even accept) the needle retaining clip.


    NOTE: neither the lower end nor the complete rebuild kits include the mixture screw block-off plug, and you should consider ordering those when doing your carb service:

    HCP7376 Aftermarket Hitachi idle mixture screw bore hole RUBBER PLUG, tapered design with mushroom head allows repeated removal and re-use. NOTE: may be a slightly loose fit on some models; if so, use a small amount of gasket or rubber adhesive to secure firmly in place (just a thin smear will do). Waterproof and dustproof design keeps the screw away from dirt and moisture, while also allowing for easy removal for tuning purposes. A much better solution compared to the original metal anti-damper plugs! Fits all Hitachi HSC32 and HSC33 model carbs as used on all XJ650 (except Turbo), XJ700 non-X, and all XJ750 air-cooled models. Each:
    $ 4.50

    HCP7376SET4 Aftermarket Hitachi idle mixture screw bore hole RUBBER PLUGS, set of 4:
    $ 17.95


    HCP14731 Aftermarket Hitachi idle mixture screw bore hole RUBBER PLUG, tapered design with mushroom head allows repeated removal and re-use. NOTE: may be a slightly loose fit on some models; if so, use a small amount of gasket or rubber adhesive to secure firmly in place (just a thin smear will do). Bottom part of shaft may need to be trimmed short for a perfect fit. Waterproof and dustproof design keeps the screw away from dirt and moisture, while also allowing for easy removal for tuning purposes. Fits all Hitachi HSC32 and HSC33 model carbs as used on all XJ650 (except Turbo), XJ700 non-X, and all XJ750 air-cooled models. Each:
    $ 1.50

    HCP14731SET4 Aftermarket Hitachi idle mixture screw bore hole RUBBER PLUGS, set of 4:
    $ 5.95



    The following kits contain the original style rubber-tipped float valve needles:

    HCP1 Aftermarket Hitachi carb LOWER END STANDARD REBUILD KIT, with rubber-tipped needle, standard bowl gasket, does not include the valve seat filter screen. Single kit does one carb. Each:
    $ 24.95

    HCP1SET4 Aftermarket Hitachi carb LOWER END STANDARD REBUILD KITS, set of 4:
    $ 94.95


    HCP18210 Aftermarket Hitachi carb LOWER END DELUXE REBUILD KIT, with rubber-tipped needle and seat filter screen, performance bowl gasket. Single kit does one carb. Each:
    $ 29.95

    HCP18210SET4 Aftermarket Hitachi carb LOWER END DELUXE REBUILD KITS, set of 4:
    $ 114.95



    All of the following kits contain aftermarket style metal-tipped float valve needles, recommended for people who live in an area where there is a significant amount of E-85 (alcohol) fuel blended with the gasoline. Ethanol tends to soften and attack rubber products, including the rubber tip of the original style float needles, which can then cause the float valve unit to stick (closed) or leak fuel even when in the closed position.

    HCP18896 Aftermarket Hitachi carb LOWER END STANDARD REBUILD KIT, with metal-tipped needle, standard bowl gasket, does not include the valve seat filter screen. Single kit does one carb. Each:
    $ 24.95

    HCP18896SET4 Aftermarket Hitachi carb LOWER END STANDARD REBUILD KITS, set of 4:
    $ 94.95


    HCP18897 Aftermarket Hitachi carb LOWER END DELUXE REBUILD KIT, with metal-tipped needle and seat filter screen, performance bowl gasket. Single kit does one carb. Each:
    $ 29.95

    HCP18897SET4 Aftermarket Hitachi carb LOWER END DELUXE REBUILD KITS, set of 4:
    $ 114.95



    HITACHI CARBS COMPLETE REBUILD KITS:

    Aftermarket Hitachi HSC-xx series carb REBUILD KITS--- available in a variety of versions, depending on how far you plan to go into your carbs.

    Our partial rebuild kits contains the basic parts you'll need to do a carb re-fresh when you are not breaking the individual carbs off the rack....float valve seats, needles, and washers, as well as the mixture screw o-rings, washers, and springs, a bowl gasket and bowl drain screw.

    The complete rebuild kits have all of those items along with all of the additional parts you'll typically need when doing a full rack teardown......throttle shaft seals, shims, clips, and screws, as well as the fuel supply tube o-rings.

    The standard kits contain a die-cut paper bowl gasket and a brass straight-blade bowl drain screw, while the deluxe kits have the upgraded hi-performance bowl gaskets and allen-drive bowl drain screws.

    Note that both style kits contain only the typical "wear items" (gaskets, rubber parts, etc.) and do not include any of the various "hard parts" that you may also discover you'll need (jets, emulsion tubes, needles, choke plungers, attaching screws or hardware, etc.) that you may need or desire once you dig into your specific set of carbs.

    NOTE: the needle that comes with all of these sets are approximately the same height as a factory Yamaha needle, and it may not be necessary to re-adjust the float level height after installation, but for safety and performance reasons you should always check the fuel level after any carb work or parts replacement!


    NOTE: kits that contain the original style rubber-tipped needles include the needle hanger clip. By the way, the purpose of this clip is to prevent the rubber tip of the needle from "seizing" within the float valve seat (due to the rubber swelling), or fuel varnish forming around it (and "gluing" it to the brass seat). Since the clip is attached to the float, as the fuel bowl empties the weight of the float pulling down on the needle will tend to overcome any needle tip seizure and prevent that float valve from remaining closed, even as the float bowl empties of fuel.

    Metal-tipped needles, although not original on Hitachi carbs, were used on many original Mikuni carbs. The metal needle tips are much less prone to tip seizure and thus metal-tipped needles do not need, nor use (or even accept) the needle retaining clip.



    NOTE: neither the lower end nor the complete rebuild kits include the mixture screw block-off plug, and you should consider ordering those when doing your carb service:

    HCP7376 Aftermarket Hitachi idle mixture screw bore hole RUBBER PLUG, tapered design with mushroom head allows repeated removal and re-use. NOTE: may be a slightly loose fit on some models; if so, use a small amount of gasket or rubber adhesive to secure firmly in place (just a thin smear will do). Waterproof and dustproof design keeps the screw away from dirt and moisture, while also allowing for easy removal for tuning purposes. A much better solution compared to the original metal anti-damper plugs! Fits all Hitachi HSC32 and HSC33 model carbs as used on all XJ650 (except Turbo), XJ700 non-X, and all XJ750 air-cooled models. Each:
    $ 4.50

    HCP7376SET4 Aftermarket Hitachi idle mixture screw bore hole RUBBER PLUGS, set of 4:
    $ 17.95


    HCP14731 Aftermarket Hitachi idle mixture screw bore hole RUBBER PLUG, tapered design with mushroom head allows repeated removal and re-use. NOTE: may be a slightly loose fit on some models; if so, use a small amount of gasket or rubber adhesive to secure firmly in place (just a thin smear will do). Bottom part of shaft may need to be trimmed short for a perfect fit. Waterproof and dustproof design keeps the screw away from dirt and moisture, while also allowing for easy removal for tuning purposes. Fits all Hitachi HSC32 and HSC33 model carbs as used on all XJ650 (except Turbo), XJ700 non-X, and all XJ750 air-cooled models. Each:
    $ 1.50

    HCP14731SET4 Aftermarket Hitachi idle mixture screw bore hole RUBBER PLUGS, set of 4:
    $ 5.95


    All of the following kits contain the original style rubber-tipped float valve needles:

    Each set of our HCP18720 Hitachi standard partial rebuild kits listed below include:

    - HCP18795 float valve sets (4)
    - HCP862 standard bowl gasket (4)
    - HCP895 mixture screw o-rings (4)
    - HCP896 mixture screw washers (4)
    - HCP6573 mixture screw springs (4)
    - HCP11141 choke plunger valve rubber dust caps (4)
    - HCP15785 fuel bowl brass straight-slot drain screws (4)

    HCP18720 Aftermarket Hitachi HSCxx-series carb STANDARD PARTIAL REBUILD KITS, for use on all XJ650 (except Turbo), 1985-86 XJ700 air-cooled models, and all 1981-84 XJ750 air-cooled models. Contains enough parts needed to do an entire rack of carbs:
    $ 169.95



    Each set of our HCP18862 Hitachi deluxe partial rebuild kits listed below include:

    - all of the items in the HCP18720 standard partial rebuild kits but with the following upgraded parts:
    * the HCP15785 brass bowl drain screws are replaced with the HCP8878 allen-drive bowl drain screws.
    * the HCP862 standard bowl gaskets are replaced with the HCP18411 hi-performance bowl gaskets

    HCP18862 Aftermarket Hitachi HSCxx-series carb DELUXE PARTIAL REBUILD KITS, for use on all XJ650 (except Turbo), 1985-86 XJ700 air-cooled models, and all 1981-84 XJ750 air-cooled models. Contains enough parts needed to do an entire rack of carbs:
    $ 179.95




    Each set of our HCP18721 Hitachi standard complete rebuild kits listed below include:

    - HCP18795 float valve sets (4)
    - HCP9855 float valve screens installed onto the valve seats (4)
    - HCP862 standard bowl gasket (4)
    - HCP895 mixture screw o-rings (4)
    - HCP896 mixture screw washers (4)
    - HCP6573 mixture screw springs (4)
    - HCP11141 choke plunger valve rubber dust caps (4)
    - HCP15785 fuel bowl brass straight-slot drain screws (4)
    - HCP38B throttle shaft seals (8)
    - HCP3991 throttle shaft shim washers (8)
    - HCP1348 throttle shaft butterfly valve screws (8)
    - HCP905 throttle shaft e-clips (2)
    - HCP2421 fuel supply tube o-rings (10)

    HCP18721 Aftermarket Hitachi HSCxx-series carb STANDARD COMPLETE REBUILD KITS, for use on all XJ650 (except Turbo), 1985-86 XJ700 air-cooled models, and all 1981-84 XJ750 air-cooled models. NOTE: these kits contain ten (10) of the fuel supply/overflow tube o-rings, which is enough to accommodate the HSC33 series carbs; owners of the HSC32 series carbs will find that they have 4 extra o-rings leftover, as those carbs only require 6 of those o-rings for the fuel supply tubes. Also included are eight (8) of the throttle shaft plastic shim washers, which will leave you with one extra shim (HSC32 carbs) or three extra shims (HSC33 carbs). Contains all the parts needed to do an entire rack of carbs:
    $ 264.95



    Each set of our HCP18863 Hitachi deluxe complete rebuild kits listed below include:

    - all of the items in the HCP18721 standard complete rebuild kits but with the following upgraded parts:
    * the HCP15785 brass bowl drain screws are replaced with the HCP8878 allen-drive bowl drain screws.
    * the HCP862 standard bowl gaskets are replaced with the HCP18411 hi-performance bowl gaskets

    HCP18863 Aftermarket Hitachi HSCxx-series carb DELUXE COMPLETE REBUILD KITS, for use on all XJ650 (except Turbo), 1985-86 XJ700 air-cooled models, and all 1981-84 XJ750 air-cooled models. NOTE: these kits contain ten (10) of the fuel supply/overflow tube o-rings, which is enough to accommodate the HSC33 series carbs; owners of the HSC32 series carbs will find that they have 4 extra o-rings leftover, as those carbs only require 6 of those o-rings for the fuel supply tubes. Also included are eight (8) of the throttle shaft plastic shim washers, which will leave you with one extra shim (HSC32 carbs) or three extra shims (HSC33 carbs). Contains all the parts needed to do an entire rack of carbs:
    $ 274.95




    All of the following kits contain aftermarket style metal-tipped float valve needles, recommended for people who live in an area where there is a significant amount of E-85 (alcohol) fuel blended with the gasoline. Ethanol tends to soften and attack rubber products, including the rubber tip of the original style float needles, which can then cause the float valve unit to stick (closed) or leak fuel even when in the closed position.

    Each set of our HCP18880 Hitachi standard partial rebuild kits listed below include:

    - HCP17176 float valve sets (4)
    - HCP862 standard bowl gaskets (4)
    - HCP895 mixture screw o-rings (4)
    - HCP896 mixture screw washers (4)
    - HCP6573 mixture screw springs (4)
    - HCP11141 choke plunger valve rubber dust caps (4)
    - HCP15785 fuel bowl brass straight-slot drain screws (4)

    HCP18880 Aftermarket Hitachi HSCxx-series carb STANDARD PARTIAL REBUILD KITS, for use on all XJ650 (except Turbo), 1985-86 XJ700 air-cooled models, and all 1981-84 XJ750 air-cooled models. Contains enough parts needed to do an entire rack of carbs:
    $ 169.95



    Each set of our HCP18881 Hitachi deluxe partial rebuild kits listed below include:

    - all of the items in the HCP18880 standard partial rebuild kits but with the following upgraded parts:
    * the HCP15785 brass bowl drain screws are replaced with the HCP8878 allen-drive bowl drain screws.
    * the HCP862 standard bowl gaskets are replaced with the HCP18411 hi-performance bowl gaskets

    HCP18881 Aftermarket Hitachi HSCxx-series carb DELUXE PARTIAL REBUILD KITS, for use on all XJ650 (except Turbo), 1985-86 XJ700 air-cooled models, and all 1981-84 XJ750 air-cooled models. Contains enough parts needed to do an entire rack of carbs:
    $ 174.95




    Each set of our HCP18882 Hitachi standard complete rebuild kits listed below include:

    - HCP17176 float valve sets (4)
    - HCP869 screens installed onto the valve seats (4)
    - HCP862 standard bowl gasket (4)
    - HCP895 mixture screw o-ring (4)
    - HCP896 mixture screw washers (4)
    - HCP6573 mixture screw spring (4)
    - HCP11141 choke plunger valve rubber dust caps (4)
    - HCP15785 fuel bowl brass straight-slot drain screw (4)
    - HCP38B throttle shaft seals (8)
    - HCP3991 throttle shaft shim washers (8)
    - HCP1348 throttle shaft butterfly valve screws (8)
    - HCP905 throttle shaft e-clips (2)
    - HCP2421 fuel supply tube o-rings (10)

    HCP18882 Aftermarket Hitachi HSCxx-series carb STANDARD COMPLETE REBUILD KITS, for use on all XJ650 (except Turbo), 1985-86 XJ700 air-cooled models, and all 1981-84 XJ750 air-cooled models. NOTE: these kits contain ten (10) of the fuel supply/overflow tube o-rings, which is enough to accommodate the HSC33 series carbs; owners of the HSC32 series carbs will find that they have 4 extra o-rings leftover, as those carbs only require 6 of those o-rings for the fuel supply tubes. Also included are eight (8) of the throttle shaft plastic shim washers, which will leave you with one extra shim (HSC32 carbs) or three extra shims (HSC33 carbs). Contains all the parts needed to do an entire rack of carbs:
    $ 264.95



    Each set of our HCP18883 Hitachi deluxe complete rebuild kits listed below include:

    - all of the items in the HCP18882 standard complete rebuild kits but with the following upgraded parts:
    * the HCP15785 brass bowl drain screws are replaced with the HCP8878 allen-drive bowl drain screws.
    * the HCP862 standard bowl gaskets are replaced with the HCP18411 hi-performance bowl gaskets

    HCP18883 Aftermarket Hitachi HSCxx-series carb DELUXE COMPLETE REBUILD KITS, for use on all XJ650 (except Turbo), 1985-86 XJ700 air-cooled models, and all 1981-84 XJ750 air-cooled models. NOTE: these kits contain ten (10) of the fuel supply/overflow tube o-rings, which is enough to accommodate the HSC33 series carbs; owners of the HSC32 series carbs will find that they have 4 extra o-rings leftover, as those carbs only require 6 of those o-rings for the fuel supply tubes. Also included are eight (8) of the throttle shaft plastic shim washers, which will leave you with one extra shim (HSC32 carbs) or three extra shims (HSC33 carbs). Contains all the parts needed to do an entire rack of carbs:
    $ 269.95



    NOTE: good used condition carb bodies, float bowls, and other carb rack components are sometimes available, please inquire.
     
    Last edited: Sep 12, 2021
  5. chacal

    chacal Moderator Moderator Supporting Vendor Premium Member

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    kl7) Aftermarket Hitachi FLOATS, FLOAT PINS, AND SHIMS:

    Unlike the Mikuni carbs, Hitachi carb FLOATS used a loose-fitting hinge PIN to secure the float to the cast float posts in the bottom of the carb body. Additionally, the formed "tube" that the float pin slides thru on the float bracket arm is somewhat "short" in overall length compared to the distance between the float posts, resulting in a float that typically has quite a bit of side-to-side "slop" in its motion and movement. This slop can allow quite a bit of erratic movement in the float on the pin, and can contribute to difficulties with getting the fuel level set properly and consistently on these carbs.

    We offer some very precise SHIMMING WASHERS that allow you to take up this slack. Unfortunately, due to variations in the machining of the float post inside distance on various car bodies, there is no "one-size-fits-all" solution that we can offer as to what thickness shims are going to be correct to use. The best guidance that we can offer is that you want to eliminate equal amounts of slop on both sides of the float pin tube, while still allowing for enough clearance on both sides to eliminate any chance of the float binding on the pin.

    Our research shows that a typical carb body will have float posts that have approximately an 18.10mm inside-to-inside distance, at the level where the pin goes thru the float posts. The pin tube on the float, however, is only about 17.05mm wide.......giving almost a total amount of "slop of 1.00mm between the pin tube and the float posts......note that this 1.00mm of slop is equally divided on both ends of the float pin tube, resulting in a clearance of approximately 0.50mm on each side of the pin tube.

    Our thoughts and experience shows that you can safely reduce this clearance to 0.25mm per side.


    HCP866 Aftermarket Hitachi FLOAT & PIN SET, fits all XJ650 (except Turbo), XJ700 air-cooled, all 1981-84 XJ750 air-cooled engines, and 1983 XV750MK Virago models that use the Hitachi HSC40 series carbs. Each:
    $ 22.95

    HCP866SET4 Aftermarket Hitachi FLOAT & PIN SETS, set of 4:
    $ 79.95


    HCP288 Aftermarket Hitachi FLOAT PIN, fits all XJ650 (except Turbo), XJ700 air-cooled, all 1981-84 XJ750 air-cooled engines, and 1983 XV750MK Virago models that use the Hitachi HSC40 series carbs. Each:
    $ 5.95

    HCP288SET4 Aftermarket Hitachi FLOAT PINS, set of 4:
    $ 18.95



    HCP18328 Aftermarket float pin tube SHIMMING WASHER, for use with all Hitachi original floats. Each stainless steel shim measures 0.0254mm thickness. Use as required or in conjunction with other size shimming washers to take up the proper amount of slop. Each:
    $ 1.50

    HCP18328SET8 Aftermarket float pin tube SHIMMING WASHER, set of 8:
    $ 9.95


    HCP18329 Aftermarket float pin tube SHIMMING WASHER, for use with all Hitachi original floats. Each stainless steel shim measures 0.0508mm thickness. Use as required or in conjunction with other size shimming washers to take up the proper amount of slop. Each:
    $ 1.50

    HCP18329SET8 Aftermarket float pin tube SHIMMING WASHER, set of 8:
    $ 9.95


    HCP18330 Aftermarket float pin tube SHIMMING WASHER, for use with all Hitachi original floats. Each stainless steel shim measures 0.0762mm thickness. Use as required or in conjunction with other size shimming washers to take up the proper amount of slop. Each:
    $ 1.50

    HCP18330SET8 Aftermarket float pin tube SHIMMING WASHER, set of 8:
    $ 9.95


    HCP18331 Aftermarket float pin tube SHIMMING WASHER, for use with all Hitachi original floats. Each stainless steel shim measures 0.1016mm thickness. Use as required or in conjunction with other size shimming washers to take up the proper amount of slop. Each:
    $ 1.50

    HCP18331SET8 Aftermarket float pin tube SHIMMING WASHER, set of 8:
    $ 9.95


    HCP18332 Aftermarket float pin tube SHIMMING WASHER, for use with all Hitachi original floats. Each stainless steel shim measures 0.1270mm thickness. Use as required or in conjunction with other size shimming washers to take up the proper amount of slop. Each:
    $ 1.50

    HCP18332SET8 Aftermarket float pin tube SHIMMING WASHER, set of 8:
    $ 9.95


    HCP18333 Aftermarket float pin tube SHIMMING WASHER, for use with all Hitachi original floats. Each stainless steel shim measures 0.1524mm thickness. Use as required or in conjunction with other size shimming washers to take up the proper amount of slop. Each:
    $ 1.50

    HCP18333SET8 Aftermarket float pin tube SHIMMING WASHER, set of 8:
    $ 9.95



    HCP18334 Aftermarket float pin tube SHIMMING WASHER, for use with all Hitachi original floats. Each stainless steel shim measures 0.1778mm thickness. Use as required or in conjunction with other size shimming washers to take up the proper amount of slop. Each:
    $ 2.50

    HCP18334SET8 Aftermarket float pin tube SHIMMING WASHER, set of 8:
    $ 12.95



    HCP18335 Aftermarket float pin tube SHIMMING WASHER, for use with all Hitachi original floats. Each stainless steel shim measures 0.2032mm thickness. Use as required or in conjunction with other size shimming washers to take up the proper amount of slop. Each:
    $ 1.50

    HCP18335SET8 Aftermarket float pin tube SHIMMING WASHER, set of 8:
    $ 9.95



    HCP18336 Aftermarket float pin tube SHIMMING WASHER, for use with all Hitachi original floats. Each stainless steel shim measures 0.2540mm thickness. Use as required or in conjunction with other size shimming washers to take up the proper amount of slop. Each:
    $ 1.50

    HCP18336SET8 Aftermarket float pin tube SHIMMING WASHER, set of 8:
    $ 9.95




    FLOAT BOWL GASKETS:

    OEM bowl gaskets are made from a graphite impregnated board material, while the standard-duty aftermarket gaskets are made from a treated fiber (cardboard) type material. We recommend the use of the aftermarket hi-performance gaskets which are designed to slightly swell in the presence of petroleum products (fuel or oil), thus creating a super-tight, leak-proof flange seal. All versions of our die-cut replacement carb bowl-to-carb body gaskets correctly replace your torn or leaking originals. NOTE: replacement bowl gaskets are already included in the various lower end and complete carb rebuild kits listed above.

    HCP862 Aftermarket standard-duty, die-cut paper Hitachi carb BOWL GASKET, fits all XJ650 (except Turbo), all XJ700 non-X, and all XJ750 models with Hitachi carbs, each:
    $ 6.95

    HCP862SET4 Aftermarket standard-duty, die-cut paper Hitachi carb BOWL GASKETS, set of 4:
    $ 26.95


    HCP18411 Aftermarket hi-performance, die-cut paper Hitachi carb BOWL GASKET, fits all XJ650 (except Turbo), all XJ700 non-X, and all XJ750 models with Hitachi carbs, each:
    $ 7.95

    HCP18411SET4 Aftermarket hi-performance, die-cut paper Hitachi carb BOWL GASKETS, set of 4:
    $ 29.95



    HCP11618 Aftermarket standard-duty, die-cut paper Hitachi carb BOWL GASKET, fits all 1984-86 XV700, 1983 XV920, and 1984-86 XV1000 models with Hitachi HSC40-series carbs, each:
    $ 5.95

    HCP11618SET4 Aftermarket standard-duty, die-cut paper Hitachi carb BOWL GASKETS, set of 4:
    $ 22.95


    HCP11978 Aftermarket standard-duty, die-cut paper Hitachi carb BOWL GASKET, fits all 1981-83 XV750 and 1981-82 XV920 models with Hitachi HSC40-series carbs, each:
    $ 5.95

    HCP11978SET4 Aftermarket standard-duty, die-cut paper Hitachi carb BOWL GASKETS, set of 4:
    $ 22.95



    NOTE: if you use any type of sealant on these gaskets, use it on the BOWL side of the gasket (something like Permatex Copper Spray-A-Gasket is a fine choice). On the carb body side of the gasket, use a light oil....like Marvel Mystery Oil or the like....and barely moisten the gasket surface. This will allow the new gasket to soften slightly and allows the gasket to form itself to the raised mounting ridge that is cast onto the carb body mating flange.....and also allows for an easy, no-stick removal of the float bowl in the future!



    HITACHI CARB FLOAT BOWL HARDWARE:

    fff) OEM Hitachi carb BOWL-TO-BODY MOUNTING SCREW, stock. Does not come with the lock washer, which has to be ordered below separately. NOTE: original screws had integral captured lock washers, the replacement ones do not. These replacement panhead, phillips-drive screws have a black-oxide finish, as opposed to the natural finish used originally. Use with the HCP59 lock washers listed below.

    HCP2940 OEM Hitachi carb bowl-to-body MOUNTING SCREW, panhead, phillips-drive, black oxide finish, each:
    $ 3.50

    HCP2940SET4 OEM Hitachi carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 13.95

    HCP2940SET16 OEM Hitachi carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 49.95



    m5) Aftermarket Hitachi carb BOWL-TO-BODY MOUNTING SCREW, stock style. Does not come with the lock washer, which has to be ordered below separately. NOTE: original screws had integral captured lock washers, the replacement ones do not.

    Replacement screws come in a variety of different finish and head drive styles, so please review the descriptions below carefully!

    Here are some quick guides that shows the different head and drive styles:



    https://www.boltdepot.com/fastener-information/Printable-Tools/Type-Chart.pdf

    http://www.oocities.org/dtmcbride/home_garden/fasteners.html



    These replacement panhead, phillips-drive screws have a natural finish as used originally. Use with the HCP913 lock washers listed further below:

    HCP2643 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREW, panhead, phillips-drive, natural finish, each:
    $ 1.50

    HCP2643SET4 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 5.25

    HCP2643SET16 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 14.95



    These replacement panhead, phillips-drive screws have a polished finish and are made from 18-8 stainless steel. Use with the HCP57 lock washers listed further below:

    HCP302 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREW, 18-8 stainless steel, panhead, phillips-drive, each:
    $ 1.50

    HCP302SET4 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 4.95

    HCP302SET16 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 12.95



    These replacement button-head, hex-key drive screws have a polished finish, and are made from a 18-8 polished stainless steel. Use with the HCP57 lock washers listed further below:

    HCP303 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREW, button-head, hex-drive, 18-8 stainless steel, each:
    $ 1.95

    HCP303SET4 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 5.95

    HCP303SET16 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 14.95



    These replacement socket head, hex-key drive screws have a polished finish, as and are made from a 18-8 polished stainless steel. Use with the HCP57 lock washers listed further below:

    HCP56 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREW, socket head, hex-drive, 18-8 stainless steel, each:
    $ 1.95

    HCP56SET4 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 4.95

    HCP56SET16 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 13.95



    These replacement socket head, hex-key drive screws have a black-oxide finish, and are made from alloy steel material. Use with the HCP59 lock washers listed further below:

    HCP58 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREW, socket head, hex-drive, black oxide coated alloy steel, each:
    $ 1.50

    HCP58SET4 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 4.95

    HCP58SET16 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 9.95



    These replacement panhead, phillips-drive screws have a golden chromate finish, as opposed to the natural finish used originally, and come with the integral captured lockwasher as original:

    HCP1358 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREW with lockwasher, panhead, phillips-drive, gold chromate finish, each:
    $ 1.95

    HCP1358SET4 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREWS with lockwasher, set of 4:
    $ 6.95

    HCP1358SET16 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREWS with lockwasher, set of 16:
    $ 19.95




    ggg) Replacement Hitachi carb Bowl-to-Body Mounting Screw LOCK WASHERS, available in a variety of finishes to match the above screws,

    These replacement lock washers have a black-oxide finish. Use with the HCP2940 or the HCP58 screws listed above:

    HCP59 Aftermarket Hitachi carb bowl-to-body black oxide LOCK WASHER, each:
    $ 1.00

    HCP59SET4 Aftermarket Hitachi carb bowl-to-body black oxide LOCK WASHERS, set of 4:
    $ 2.95

    HCP59SET16 Aftermarket Hitachi carb bowl-to-body black oxide LOCK WASHERS, set of 16:
    $ 6.95



    These replacement lock washers have a natural finish as used originally. Use with the HCP2643 screws listed above:

    HCP913 Aftermarket Hitachi carb bowl-to-body natural finish LOCK WASHER, each:
    $ 1.00

    HCP913SET4 Aftermarket Hitachi carb bowl-to-body natural finish LOCK WASHERS, set of 4:
    $ 3.75

    HCP913SET16 Aftermarket Hitachi carb bowl-to-body natural finish LOCK WASHERS, set of 16:
    $ 5.50



    These replacement lock washers are made from an 18-8 stainless steel material for durability. Use with the HCP56, HCP302, or HCP303 screws listed above:

    HCP57 Aftermarket Hitachi carb bowl-to-body stainless LOCK WASHER, each:
    $ 1.00

    HCP57SET4 Aftermarket Hitachi carb bowl-to-body stainless LOCK WASHERS, set of 4:
    $ 3.25

    HCP57SET16 Aftermarket Hitachi carb bowl-to-body stainless LOCK WASHERS, set of 16:
    $ 7.95




    HITACHI CARB FLOAT BOWL DRAIN SCREW:

    e5) OEM and aftermarket Hitachi carb BOWL DRAIN SCREW. Available in a variety of versions, these taper-point screws will exactly replace the mangled or damaged original screws. Use 1 per bowl on all Hitachi-equipped models: all XJ650 (except Turbo), all XJ700 air-cooled models, and all XJ750 air-cooled models. These drain screws will also fit all 1984-86 Virago XV700, 1981-83 Virago XV750, 1981-83 Virago XV920, and 1984-87 Virago XV1000 models.

    And if the threaded port in the float bowl where the drain screw fits been injured, or if you want to restore the threads to their like-new condition, this thread chaser tap is what you'll need:



    HCP2399 Aftermarket THREAD CHASER AND CLEAN-UP TAP, made from a high-speed titanium nitride coated steel. For the following threaded holes listed below, as well as many other areas of the bike. This 6 x 1.00 pitch is a very common sized thread.
    $ 9.95

    - Hitachi HSC32 air compensator jet holes.
    - Hitachi lower carb rack mount screw holes.
    - Hitachi pilot and main air jets port holes (in carb throat, below vacuum piston).
    - Hitachi carb bowl drain screw hole.
    - All models: gas tank mounting holes for the petcock.
    - All models: gas tank fuel sending unit mounting holes.
    - Mikuni XJ550, XJ700-X, XJ750-X, and XJ1100 lower carb rack bracket screw holes.
    - All XJ550 - XJ900 models cylinder head exhaust port stud holes.
    - All XJ550 - XJ1100 models cylinder head valvecover mounting bolt holes.
    - All XJ550 - XJ1100 and XS1100 models cylinder head cam bearing cap bolt holes.
    - All XJ550 - XJ1100 and XS1100 models cylinder head intake manifold bolt holes.
    - All XJ550 - XJ1100 and XS1100 models cylinder head valvecover mounting bolt holes.
    - All XJ550 - XJ1100 and XS1100 models engine side covers mounting bolt holes.
    - All XJ550 - XJ1100 and XS1100 models engine oil pan mounting bolt holes.
    - All XJ550 - XJ1100 and XS1100 models engine upper-to-lower crankcase cinch bolt holes (note: some of the mounting holes are different size, and require the use of the larger HCP11028 tap below).
    - XJ700-X and XJ750-X cylinder heads and jugs coolant jacket bolt holes.
    - Some models: cylinder head cam chain tunnel-to-cylinder jugs cinching studs, for engines that have 2 studs on both the front and rear of the tunnel (models with a single tunnel stud use the HCP11028 tap listed further below).
    - Most models: upper crankcase to cylinder jugs stud.
    - All models: cam chain tensioner mounting bolt holes.
    - Some models: mechanical tachometer drive housing mounting hole.
    - exhaust headpipe gas test bolt threaded hole in the bottom of each header pipe.
    - exhaust collector input (from header pipe) pinch clamp.
    - collector chrome cover retaining bolt hole (XJ1100 models)
    - collector chrome cover rear retaining screw hole (XJ1100 models).
    - XJ650 Turbo models, turbo housing hole for the right muffler “joiner pipe” mounting bolt holes.

    NOTE: most of these threaded holes need chasing, including the carb bowl drain screw holes, especially if the drain screw was "frozen"; and the gas tank petcock and sending unit mounting holes, which almost always needs cleaning or re-tapping (be careful about this when buying a used gas tank!).




    HCP28170 Aftermarket thread tap or EZ-out extractor TAP HANDLE, featuring offset tap handles and fully adjustable head for all m3-m12 size taps and size 0 to ½” extractors. This is the proper way to hold a tap or extractor t insure that the force is directed straight down and doesn’t “wobble” as you are cutting, reaming, or extracting. Much better than using pliers or vise-grips to hold the tool……..
    $ 17.95


    NOTE: it is recommended that anti-seize compound be used on the screw threads when fitting screws back into the carb bowl passage.


    HCP864 OEM Hitachi carb BOWL DRAIN SCREW, panhead, phillips-drive, cad-plated alloy-steel each:
    $ 21.95

    HCP864SET4 OEM Hitachi carb BOWL DRAIN SCREWS, set of 4:
    $ 79.95


    HCP3113 Aftermarket Hitachi carb BOWL DRAIN SCREW, panhead, phillips-drive, zinc-plated alloy steel each:
    $ discontinued

    HCP3113SET4 Aftermarket Hitachi carb BOWL DRAIN SCREWS, set of 4:
    $ discontinued


    HCP3112 Aftermarket Hitachi carb BOWL DRAIN SCREW, panhead, phillips-drive, 18-8 stainless-steel, each:
    $ discontinued

    HCP3112SET4 Aftermarket Hitachi carb BOWL DRAIN SCREWS, set of 4:
    $ discontinued


    HCP15785 Aftermarket Hitachi carb BOWL DRAIN SCREW, cheesehead, straight-slot, brass, each:
    $ 8.95

    HCP15785SET4 Aftermarket Hitachi carb BOWL DRAIN SCREWS, set of 4:
    $ 29.95


    g5) Aftermarket Hitachi carb BOWL DRAIN SCREW. Bright finish 18-8 stainless steel hex-drive, socket head, taper-point screw fits into the drain hole passage of each carb bowl. Works better than the original Yamaha screw; not only is it made of stainless steel, but the larger socket-head design allows for more torque to be applied to the screw, forever ending the stripped/stuck/ruined drain screw problem that has plagued Yamaha owners forever!

    Note that by their design, the large socket head portion of this drain screw will be located OUTSIDE of the drain screw bore hole in the bowl, and sticks out about 1/4" from the bowl body. This additional length does not cause any problems, and after looking at them (installed) on the carb bowls, at first glance they might look "odd" the way the stick out, but after the third or fourth look, they appear normal and oddly interesting with that extended length.

    NOTE: do NOT "bottom" the heads of these screws against the bowl! Tighten them to 4-5 foot-pounds of torque, just enough to seat them snugly. That is all that is necessary to prevent fuel leakage from the drain port.

    Fits all XJ650 (except Turbo) models, all XJ700 non-X, and all XJ750 models using the Hitachi HSC32 or HSC33 series carbs, as well as all Hitachi HSC40 series carbs used on various XV700, XV750, XV920, and XV1000 Virago models.

    HCP8878 Aftermarket Hitachi socket-head, hex-drive, stainless-steel carb BOWL DRAIN SCREW, each:
    $ 9.95

    HCP8878SET4 Aftermarket Hitachi carb BOWL DRAIN SCREWS, set of 4:
    $ 34.95



    Anti-Seize Lubricants:

    xx1) Fastener ANTI-SEIZE PASTE. Yeah, it's smelly and makes a slippery mess on your fingers, but this stuff is a life-saver for any true wrencher, because it prevents problems down the road. Use it on any metal fastener that does not require a "loctite" thread-locker material to be used. This means on just about every fastener that is carb, engine case, or suspension-related! (except for carb upper and lower rack-mount screws and butterfly valve screws, which do require the use of a thread-lock fluid). If you think that it might, sometime, in the future, need to come off: use anti-seize compound! NOTE: the "base" metal material used in the different anti-seize pastes below do not determine what type of fastener to use such pastes on; it merely signifies what base material is used to create the anti-seize paste. You can use any "base-metal" anti-seize paste on any type of fastener and metal.

    NOTE: the use of anti-seize compounds will result in a TORQUE-MULTIPLYING EFFECT……..the result of a reduction in friction between the threaded contact points……and thus fasteners treated with anti-seize compound should have their torque values reduced by at least 10-15% when installed into steel material, and up to 25% into aluminum materials or other “soft” metals” (such as spark plugs into cylinder heads, or almost any other type of fastener into the engine) …… note that this rule applies only to service manual torque specifications on fasteners that are not indicated to be treated with anti-seize fluid by the factory …. if the factory manual specifies the use of an anti-seize coating, then the specified torque value for that fitting already takes into account the “reduced torque” necessary.

    http://raskcycle.com/techtip/webdoc14.html

    http://www.cncexpo.com/MetricBoltTorqueNm.aspx

    http://www.bmwmotorcycletech.info/sparkplugs.htm

    http://www.antiseize.com/pdf/torque_specifications.pdf


    HCP1264 Aftermarket fastener ANTI-SEIZE PASTE, standard grade aluminum-based in a 1-ounce squeeze tube, for smaller jobs.
    $ 5.95

    HCP1265 Aftermarket fastener ANTI-SEIZE PASTE, standard grade aluminum-based formula in a 4-ounce tub with a brush-lid, for larger jobs.
    $ 7.95

    HCP9784 Aftermarket fastener ANTI-SEIZE PASTE, standard grade aluminum-based formula in an 8-ounce tub with a brush-lid, a lifetime supply for your motorcycle!
    $ 12.95

    HCP9763 Aftermarket fastener ANTI-SEIZE PASTE, standard-grade copper-based formula in an 8-ounce tub with a brush-lid, a lifetime supply for your motorcycle!
    $ 12.95

    HCP9764 Aftermarket fastener ANTI-SEIZE PASTE, premium-grade nickel-based formula in an 8-ounce tub with a brush-lid, a lifetime supply for your motorcycle!
    $ 17.95


    NOTE: the following product(s) can only be shipped via ground transport (which thus eliminates the postal Priority Mail, postal Express Mail, or private carrier Expedited levels of service for this item) and cannot (and will not----don't even ask!) be shipped outside of the continental USA. Additionally, there may be a per-package weight or quantity restriction, and thus multiple-unit orders of this product may have to be shipped in separate packages and will incur additional shipping charges.

    HCP20860 Aftermarket industrial-strength ASSEMBLY LUBE, in a standard 12-ounce aerosol can. Heavy-duty formula includes graphite to not only enhance and speed up the penetrant action, but also gets down into the pores of the metal for the greatest possible lubrication possible. Won't wash away, protect against rust and corrosion, stable from 0-degrees up to 250-F. This fluid is also a great choice for use as a drive cable lubricant.
    $ 21.95

    HCP20862 Aftermarket super-duty ASSEMBLY LUBE, in a generous 10-ounce aerosol can. The cat's-meow of lubricants, infused with pure moly disulfide, it goes on wet and then dries in 1-2 hours to a super-slick, high-pressure, hi-temp, bearing-like finish which provides the ultimate level of protection. Prevents rust and corrosion, won't wash off, throw off, and won't attract dust or dirt. Surfaces must be clean and dry of previous oils, etc. before application. Can even be used as an engine, tranny, and drivetrain assembly lube!
    $ 24.95

    HCP20863 Aftermarket super-duty GRAPHITE LUBE, in a generous 10-ounce aerosol can. The 800-pound gorilla of lubricants, it's infused with pure graphite, goes on wet, and then dries in 10 minutes to a super-slick, high-pressure, bearing-like finish which provides the ultimate level of protection. Prevents rust, won't wash off, throw off, and won't attract dust or dirt. Surfaces must be clean and dry of previous oils, etc. before application. Can be used as an engine assembly lube, bearing or bushing pre-lube, great for lock cylinders, and all metallic sliding surfaces. Use where dusty or dirty conditions render oil-based lubricants ineffective or undesirable.
    $ 21.95
     
    Last edited: Sep 19, 2021
  6. chacal

    chacal Moderator Moderator Supporting Vendor Premium Member

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    HITACHI FUEL SYSTEM HARDWARE:

    HITACHI CARB HARDWARE KITS:

    chk1) While you’re completing your carb rebuild efforts, you’ve probably noticed that many of the fasteners and associated hardware pieces are buggered, rusty, incorrect, or worse. Since your carbs will soon be performing as new, why not make them look like new, too? These HITACHI CARB FASTENERS KITS and HITACHI CARB HARDWARE KITS contain all of the major external hardware or fasteners needed to refresh them like a pro, and at an affordable price.


    Hitachi Carb Fasteners Kits:

    These fastener kits contain all of the major and minor fasteners that you’ll need to refresh a set of carbs, and are available in a variety of material and finishes to suit your particular preferences. NOTE: throttle shaft hardware (butterfly valves screws, shaft end clips, etc) and bowl drain screws are not included in any of these kits, since those items are already contained in the various carb rebuild kits listed previously.

    Each kit contains the following items in matching finishes and head styles:
    * matched assortment of carb “hat” screws, lockwashers, and a flat washer.
    * matched assortment of carb bowl-to-body screws and lockwashers.
    * matched assortment of carb upper rack bracket screws, lockwashers, and a flat washer.
    * matched assortment of carb lower rack bracket screws and lockwashers.
    * matched set of starter shaft retaining screw and lockwasher.
    * matched set of starter plunger bracket-to-shaft set screws.
    * an idle speed screw plastic washer (not original, but a great addition to have!)

    Here are some quick guides that shows the different head and drive styles:



    https://www.boltdepot.com/fastener-information/Printable-Tools/Type-Chart.pdf

    http://www.oocities.org/dtmcbride/home_garden/fasteners.html


    And since you'll want your new hardware to not only look nice, but fit well, the following professional quality tool-steel thread chaser taps will allow you to either "clean-up" or re-thread distorted or stripped threads in all metals, soft (aluminum) to hard (steel).

    NOTE: THE FOLLOWING TOOL KITS ARE AVAILABLE FOR RENTAL!!: some tools are a one-time or infrequent use tool, so it may be more economical for you to rent them from us, rather than to purchase outright. Please see the “rental” section within the THE TOOLBOX section of our catalog at:

    http://xjbikes.com/forums/index.php?threads/xj-parts-catalog-section-p-the-toolbox.44630

    and review the availability and procedures in the TOOL RENTAL section.

    HCP28194 Aftermarket carb body THREAD CHASER BASIC TAPS SET. This basic set of 6 taps contains all of the different sizes for the most commonly needed threaded holes on all Hitachi and Mikuni carb bodies. Almost all threaded will exhibit some type of thread wear (distortion) or minor injury that should be repaired, especially to the smaller, more “fragile” threads on the mixture screw bores, the fuel and are jets threads, the bowl, hat, and bracket mounting holes, etc. Running thread taps thru all of these threaded holes in the carb bodies will not only make the re-assembly process easier, smoother, and more secure, but there is a certain satisfaction and surety that comes with having like-new threads that can only be described as “machinist porn” (those of you that know, will know what I mean!). Correct size taps will do the upper and lower rack bracket holes, the float bowl attachment holes, the float bowl drain screw holes, the carb hat attachment holes, synch screws and idle speed bolt holes, the Mikuni float valve seat bracket hole, Mikuni main jet needle retainer plate holes (inside the vacuum piston), all air jet and fuel jet holes, enrichment plunger lifter bracket holes, and throttle shaft butterfly valve mounting holes. Comes with a can of cutting fluid and a t-handle tap holder tool. Note that unlike the complete taps set below (HCP28121), the taps for the Hitachi float valve seat and the choke plunger seat bores (on all Hitachi and Mikuni models) are not included in this set (those larger taps are what add significantly to the cost of the complete taps set). NOTE: due to the reality that you may use these tools only once, it is suggested that you use the tool rental option for this tap set. However, under the rental option, if you use the taps for actual thread tapping (cutting brand new threads in a newly drilled hole), then the return option is not allowed!
    $ 99.95

    HCP28121 Aftermarket carb body THREAD CHASER COMPLETE TAPS SET. This complete set of 9 taps contains all of the different sizes of threads found on all Hitachi and Mikuni carb bodies. Almost all threaded will exhibit some type of thread wear (distortion) or minor injury that should be repaired, especially to the smaller, more “fragile” threads on the mixture screw bores, the fuel and are jets threads, etc. Running thread taps thru all of the threaded holes in the carb bodies will not only make the re-assembly process easier, smoother, and more secure, but there is a certain satisfaction and surety that comes with having like-new threads that can only be described as “machinist porn” (those of you that know, will know what I mean!). Correct size taps will do the upper and lower rack bracket holes, the float bowl attachment holes, the float bowl drain screw holes, the carb hat attachment holes, synch screws and idle speed bolt holes, the choke plunger seat holes, the Mikuni float valve seat bracket hole, the Hitachi float valve seat hole, Mikuni main jet needle retainer plate holes (inside the vacuum piston), all air jet and fuel jet holes, enrichment plunger lifter bracket holes, and throttle shaft butterfly valve mounting holes. Comes with a can of cutting fluid and a t-handle tap holder tool. NOTE: due to the expense of this kit, and the reality that you may use these tools only once, it is suggested that you use the tool rental option for this tap set. However, under the rental option, if you use the taps for actual thread tapping (cutting brand new threads in a newly drilled hole), then the return option is not allowed!
    $ 149.95




    HCP21600 Aftermarket HSC32 series HITACHI CARB FASTENERS KIT, featuring zinc-plated alloy steel components with original-style panhead, phillips-drive screws. Note that the starter bracket set screws contained in this kit has the straight-slot drive (as original) rather than a phillips-drive.
    $ 39.95

    HCP21612 Aftermarket HSC33 series HITACHI CARB FASTENERS KIT, featuring zinc-plated alloy steel components with original-style panhead, phillips-drive screws. Note that the starter bracket set screws contained in this kit has the straight-slot drive (as original) rather than a phillips-drive.
    $ 39.95



    HCP21601 Aftermarket HSC32 series HITACHI CARB FASTENERS KIT, featuring bright 18/8 stainless steel components with original-style panhead, phillips-drive screws. Note that the starter bracket set screws contained in this kit has the straight-slot drive (as original) rather than a phillips-drive.
    $ 44.95

    HCP21607 Aftermarket HSC33 series HITACHI CARB FASTENERS KIT, featuring bright 18/8 stainless steel components with original-style panhead, phillips-drive screws. Note that the starter bracket set screws contained in this kit has the straight-slot drive (as original) rather than a phillips-drive.
    $ 47.95



    HCP21602 Aftermarket HSC32 series HITACHI CARB FASTENERS KIT, featuring bright 18/8 stainless steel components with polished button-head, hex-drive screws.
    $ 43.95

    HCP21608 Aftermarket HSC33 series HITACHI CARB FASTENERS KIT, featuring bright 18/8 stainless steel components with polished button-head, hex-drive screws.
    $ 44.95



    HCP21603 Aftermarket HSC32 series HITACHI CARB FASTENERS KIT, featuring bright 18/8 stainless steel components with smooth socket-head, hex-drive screws.
    $ 41.95

    HCP21609 Aftermarket HSC33 series HITACHI CARB FASTENERS KIT, featuring bright polished 18/8 stainless steel components with smooth socket-head, hex-drive screws.
    $ 42.95



    HCP21604 Aftermarket HSC32 series HITACHI CARB FASTENERS KIT, featuring black alloy steel components with knurled socket-head, hex-drive screws.
    $ 37.95

    HCP21611 Aftermarket HSC33 series HITACHI CARB FASTENERS KIT, featuring black alloy steel components with knurled socket-head, hex-drive screws.
    $ 38.95



    Hitachi Carb Brackets Kits:

    Kick it up a notch (or two)……..heck, kick it up to an 11 with these carb bracket kits which contain beautifully re-plated original major and minor brackets, hose clips, and more. Kits vary from model to model in their contents. NOTE: most of the pieces in these kits are re-plated, used parts, and as such, may have minor cosmetic flaws (tooling marks, fastener marks, etc.). Most such marks will not be visible once installed. Also, all re-plated items require a refundable core charge which will be credited back to you upon the return of all of the same-model, same-type kit contents. Since these are re-plated used parts, we do require an exchange for your original parts so we can have a steady supply of parts to be processed and re-plated for future sales.

    HCP23820 Aftermarket HSC32 series HITACHI CARB BRACKETS KIT features a complete set of new or re-plated original brackets listed below. Fits all 1980-81 XJ650 Maxim carbs with the short style lower rack bracket and some 1982 XJ650RJ Seca models with the short style lower rack bracket ---- the short style bracket has a small, “split loop” where the idle speed control bolt passes tightly thru it, whereas the “long” style bracket has a larger, “full-circle loop” where the idle speed control bolt passes thru it, and the long style bracket requires the use of the HCP9849 rubber grommet within the loop (or else the idle speed bolt will flop around loosely inside the loop). Please check your original lower bracket to properly identify the “short” vs. “long” style lower bracket, and many 1980-81 models and 1982 XJ650RJ Seca models could have used either the short or long style bracket. NOTE: requires a $ 125.00 core charge, refundable upon the return of all undamaged, same-model, same-type kit contents.
    $ 179.95 + $ 125.00 refundable core charge

    1 x HCP85 re-plated upper rack bracket
    1 x HCP21001 re-plated lower rack bracket (with the “short” style idle speed bracket)
    1 x HCP27 re-plated choke shaft
    1 x HCP5235 re-plated choke shaft hinge bracket
    4 x HCP5251 re-plated choke plunger lifter brackets
    1 x HCP347 re-plated choke cable bracket (on #4 hat inner position)
    1 x HCP2425 re-plated choke cable bracket clamp
    1 x HCP2426 re-plated choke cable bracket clamp screw
    1 x HCP900WH choke shaft short bushing
    1 x HCP901WH choke shaft long bushing
    1 x HCP346 re-plated throttle cable bracket (on #3 hat inner position)
    3 x HCP47 re-plated synch screws
    3 x HCP45 re-plated synch screw springs
    3 x HCP46A re-plated synch plungers
    3 x HCP46B re-plated synch plunger springs
    1 x HCP95 re-plated idle speed bolt
    1 x HCP84 re-plated idle speed bolt spring
    1 x HCP21520 reproduction vacuum hose hat clip (on #2 hat rear inner position)
    1 x HCP21525 reproduction clutch cable up bracket clip (on upper rack bracket, #3 carb outer position)
    1 x HCP289 re-plated air jet cover plate
    1 x HCP290 re-plated air jet cover plate screw



    HCP23822 Aftermarket HSC32 series HITACHI CARB BRACKETS KIT features a complete set of new or re-plated original brackets listed below. Fits all 1980-83 XJ650 Maxim, 1982 XJ650RJ Seca, 1981-84 XJ750 Maxim, 1981-83 XJ750 Seca, and XJ750 Euro model carbs with the long style lower rack bracket with the long style lower rack bracket ---- the short style bracket has a small, “split loop” where the idle speed control bolt passes tightly thru it, whereas the “long” style bracket has a larger, “full-circle loop” where the idle speed control bolt passes thru it, and the long style bracket requires the use of the HCP9849 rubber grommet within the loop (or else the idle speed bolt will flop around loosely inside the loop). Please carefully check your original lower bracket to properly identify the “short” vs. “long” style lower bracket, and many 1980-81 models and 1982 XJ650RJ Seca models could have used either the short or long style bracket. NOTE: requires a $ 125.00 core charge, refundable upon the return of all undamaged, same-model, same-type kit contents.
    $ 159.95 + $ 125.00 refundable core charge

    1 x HCP85 re-plated upper rack bracket
    1 x HCP86 re-plated lower rack bracket (with the “long” style idle speed bracket)
    1 x HCP27 re-plated choke shaft
    1 x HCP5235 re-plated choke hinge bracket
    4 x HCP5251 re-plated choke plunger lifter brackets
    1 x HCP347 re-plated choke cable bracket (on #4 hat inner position)
    1 x HCP2425 re-plated choke cable bracket clamp
    1 xHCP2426 re-plated choke cable bracket clamp screw
    1 x HCP900WH choke shaft short bushing
    1 x HCP901WH choke shaft long bushing
    1 x HCP346 re-plated throttle cable bracket (on #3 hat inner position)
    3 x HCP47 re-plated synch screws
    3 x HCP45 re-plated synch screw springs
    3 x HCP46A re-plated synch plungers
    3 x HCP46B re-plated synch plunger springs
    1 x HCP95 re-plated idle speed bolt
    1 x HCP84 re-plated idle speed bolt spring
    1 x HCP9849 reproduction idle speed screw grommet
    1 x HCP21520 reproduction vacuum hose hat clip (on #2 hat rear inner position)
    1 x HCP21525 reproduction clutch cable up bracket clip (on upper rack bracket, #3 carb outer position)
    NOTE: since the HCP289 air jet cover plate and its HCP290 air jet cover plate screw may not have been used on many of the later model carbs, they are not included in this set.



    HCP23821 Aftermarket HSC32 series HITACHI CARB BRACKETS KIT features a complete set of new or re-plated original brackets listed below. Fits 1981 XJ650 Midnight Maxim carbs with the short style lower rack bracket and some 1982 XJ650RJ Seca models with the short style lower rack bracket ---- the short style bracket has a small, “split loop” where the idle speed control bolt passes tightly thru it, whereas the “long” style bracket has a larger, “full-circle loop” where the idle speed control bolt passes thru it, and the long style bracket requires the use of the HCP9849 rubber grommet within the loop (or else the idle speed bolt will flop around loosely inside the loop). Please check your original lower bracket to properly identify the “short” vs. “long” style lower bracket, and many 1980-81 models and 1982 XJ650RJ Seca models could have used either the short or long style bracket. NOTE: requires a $ 125.00 core charge, refundable upon the return of all undamaged, same-model, same-type kit contents.
    $ 199.95 + $ 125.00 refundable core charge

    1 x HCP5405 re-plated upper rack bracket
    1 x HCP5406 re-plated lower rack bracket (with the “short” style idle speed bracket)
    1 x HCP5249 re-plated choke shaft
    1 x HCP5236 re-plated choke hinge bracket
    4 x HCP5252 re-plated choke plunger lifter brackets
    1 x HCP5407 re-plated choke cable bracket (on #4 hat inner)
    1 x HCP5408 re-plated choke cable bracket clamp
    1 x HCP2426 re-plated choke cable bracket clamp screw
    1 x HCP900WH choke shaft short bushing
    1 x HCP901WH choke shaft long bushing
    1 x HCP346 re-plated throttle cable bracket (on #3 hat inner)
    3 x HCP47 re-plated synch screws
    3 x HCP45 re-plated synch screw springs
    3 x HCP46A re-plated synch plungers
    3 x HCP46B re-plated synch plunger springs
    1 x HCP95 re-plated idle speed bolt
    1 x HCP84 re-plated idle speed bolt spring
    1 x HCP21520 reproduction vacuum hose hat clip (on #2 hat rear inner position)
    1 x HCP21525 reproduction clutch cable up bracket clip (on upper rack bracket, #3 carb outer position)
    1 x HCP289 re-plated air jet cover plate
    1 x HCP290 re-plated air jet cover plate screw




    HCP23844 Aftermarket HSC32 series HITACHI CARB BRACKETS KIT features a complete set of new or re-plated original brackets listed below. Fits 1981 XJ650 Midnight Maxim carbs with the short style lower rack bracket and some 1982 XJ650RJ Seca models with the short style lower rack bracket ---- the short style bracket has a small, “split loop” where the idle speed control bolt passes tightly thru it, whereas the “long” style bracket has a larger, “full-circle loop” where the idle speed control bolt passes thru it, and the long style bracket requires the use of the HCP9849 rubber grommet within the loop (or else the idle speed bolt will flop around loosely inside the loop). Please check your original lower bracket to properly identify the “short” vs. “long” style lower bracket, and many 1980-81 models and 1982 XJ650RJ Seca models could have used either the short or long style bracket. NOTE: requires a $ 125.00 core charge, refundable upon the return of all undamaged, same-model, same-type kit contents.
    $ 199.95 + $ 125.00 refundable core charge

    1 x HCP5405 re-plated upper rack bracket
    1 x HCP21002 re-plated lower rack bracket (with the “long” style idle speed bracket)
    1 x HCP5249 re-plated choke shaft
    1 x HCP5236 re-plated choke hinge bracket
    4 x HCP5252 re-plated choke plunger lifter brackets
    1 x HCP5407 re-plated choke cable bracket (on #4 hat inner)
    1 x HCP5408 re-plated choke cable bracket clamp
    1 x HCP2426 re-plated choke cable bracket clamp screw
    1 x HCP900WH choke shaft short bushing
    1 x HCP901WH choke shaft long bushing
    1 x HCP346 re-plated throttle cable bracket (on #3 hat inner)
    3 x HCP47 re-plated synch screws
    3 x HCP45 re-plated synch screw springs
    3 x HCP46A re-plated synch plungers
    3 x HCP46B re-plated synch plunger springs
    1 x HCP95 re-plated idle speed bolt
    1 x HCP84 re-plated idle speed bolt spring
    1 x HCP9849 reproduction idle speed screw grommet
    1 x HCP21520 reproduction vacuum hose hat clip (on #2 hat rear inner position)
    1 x HCP21525 reproduction clutch cable up bracket clip (on upper rack bracket, #3 carb outer position)
    1 x HCP289 re-plated air jet cover plate
    1 x HCP290 re-plated air jet cover plate screw




    HCP23823 Aftermarket HSC32 series HITACHI CARB BRACKETS KIT features a complete set of new or re-plated original brackets listed below. Fits all 1983 XJ750 Midnight Maxim carbs with the long style lower rack bracket with the long style lower rack bracket ---- the short style bracket has a small, “split loop” where the idle speed control bolt passes tightly thru it, whereas the “long” style bracket has a larger, “full-circle loop” where the idle speed control bolt passes thru it, and the long style bracket requires the use of the HCP9849 rubber grommet within the loop (or else the idle speed bolt will flop around loosely inside the loop). Please carefully check your original lower bracket to properly identify the “short” vs. “long” style lower bracket, and many 1980-81 models and 1982 XJ650RJ Seca models could have used either the short or long style bracket. NOTE: requires a $ 125.00 core charge, refundable upon the return of all undamaged, same-model, same-type kit contents.
    $ 189.95 + $ 125.00 refundable core charge

    1 x HCP5405 re-plated upper rack bracket
    1 x HCP21002 re-plated lower rack bracket (with the “long” style idle speed bracket)
    1 x HCP5249 re-plated choke shaft
    1 x HCP5236 re-plated choke hinge bracket
    4 x HCP5252 re-plated choke plunger lifter brackets
    1 x HCP5407 re-plated choke cable bracket (#4 hat inner)
    1 x HCP5408 re-plated choke cable bracket clamp
    1 x HCP2426 re-plated choke cable bracket clamp screw
    1 x HCP900WH choke shaft short bushing
    1 x HCP901WH choke shaft long bushing
    1 x HCP346 re-plated throttle cable bracket (#3 hat inner)
    3 x HCP47 re-plated synch screws
    3 x HCP45 re-plated synch screw springs
    3 x HCP46A re-plated synch plungers
    3 x HCP46B re-plated synch plunger springs
    1 x HCP95 re-plated idle speed bolt
    1 x HCP84 re-plated idle speed bolt spring
    1 x HCP9849 reproduction idle speed screw grommet
    1 x HCP21520 reproduction vacuum hose hat clip (on #2 hat rear inner position)
    1 x HCP21525 reproduction clutch cable up bracket clip (on upper rack bracket, #3 carb outer position)
    NOTE: since the HCP289 air jet cover plate and its HCP290 air jet cover plate screw may not have been used on many of the later model carbs, they are not included in this set.



    HCP23824 Aftermarket HSC33 series HITACHI CARB BRACKETS KIT features a complete set of new or re-plated original brackets listed below. Fits all 1985 XJ700 N/NC air-cooled models and the 1984 XJ750RL model carbs. This bracket set is for carbs that originally had a natural aluminum finish; models that used the black-painted carbs can use this brackets set, but many of the brackets will have incorrect finishes. NOTE: requires a $ 125.00 core charge, refundable upon the return of all undamaged, same-model, same-type kit contents.
    $ 199.95 + $ 125.00 refundable core charge

    1 x HCP20992 re-plated upper rack bracket
    1 x HCP20991 re-plated lower rack bracket
    1 x HCP5250 re-plated choke shaft
    1 x HCP5235 re-plated choke hinge bracket
    4 x HCP5251 re-plated choke plunger lifter brackets
    1 x HCP23261 re-plated choke cable bracket (on #4 hat inner position)
    1 x HCP2425 re-plated choke cable bracket clamp
    1 x HCP2426 re-plated choke cable bracket clamp screw
    1 x HCP900WH thin choke shaft bushing
    1 x HCP13650 thick choke shaft bushing
    1 x HCP346 re-plated throttle cable bracket (on #3 hat inner positon)
    3 x HCP47 re-plated synch screws
    3 x HCP45 re-plated synch screw springs
    3 x HCP46A re-plated synch plungers
    3 x HCP46B re-plated synch plunger springs
    1 x HCP95 re-plated idle speed bolt
    1 x HCP84 re-plated idle speed bolt spring
    1 x HCP9849 reproduction idle speed screw grommet
    1 x HCP21523 reproduction vacuum hose hat clip (on #2 hat front inner position)
    1 x HCP21525 reproduction clutch cable up bracket clip (on upper rack bracket, #3 carb outer position)
    2 x HCP21526 reproduction vacuum hose up rack bracket clip (on #1 carb outer position)




    HITACHI CARB HAT HARDWARE:

    Hitachi Carb Hat Brackets:

    Our re-plated Hitachi diaphragm cover SHAFTS AND BRACKETS allow you to re-create the original look and beauty of these carb racks. These parts are available re-plated to their correct original yellow-zinc or black-zinc appearance. If you need to replace any missing hardware, or just want to create a show-winning look, then you should start your shopping list here! NOTE: all carb hat brackets and hardware are re-plated, used parts, and as such, may have minor cosmetic flaws (tooling marks, fastener marks, etc.). Most such marks will not be visible once installed. Also, all re-plated items require a refundable core charge which will be credited back to you once you return a same-model, same-type of item(s) as you purchased. Since these are re-plated used parts, we do require an exchange for your original parts so we can have a steady supply of parts to be processed and re-plated for future sales.


    HCP347RP OEM re-plated carb hat CHOKE CABLE BRACKET, mounted on the #4 hat inner position. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all HSC32-series carbs as used on XJ650 Maxim, XJ650 Euro, XJ650RJ Seca, 1981-83 XJ750 Maxim and Seca, and XJ750 Euro models. Will also fit all XJ650 Midnight Maxim and XJ750 Midnight Maxim models but has a non-correct finish. Does not include the HCP2425RP clamp or the HCP2426 clamp screw listed below. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 39.95 + $ 25.00 refundable core charge

    HCP23261RP OEM re-plated carb hat CHOKE CABLE BRACKET, mounted on the #4 hat inner position. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all HSC33-series carbs as used on XJ700 air-cooled and 1984 XJ750RL Seca models. Does not include the HCP2425RP clamp or the HCP2426 clamp screw listed below. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 49.95 + $ 25.00 refundable core charge

    HCP2425RP OEM re-plated carb hat choke cable bracket CLAMP, mounts to the HCP347RP choke cable bracket listed above. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all HSC32-series carbs as used on XJ650 Maxim, XJ650 Euro, XJ650RJ Seca, XJ700 air-cooled models, 1981-83 XJ750 Maxim and Seca, and XJ750 Euro models. Will also fit all XJ650 Midnight Maxim and XJ750 Midnight Maxim models but has a non-correct finish. Does not include the HCP2426 clamp screw listed below. NOTE: requires a $ 15.00 core charge, refundable upon the return of an undamaged, same-model, same-type clamp.
    $ 19.95 + $ 15.00 refundable core charge

    HCP2426RP OEM re-plated carb hat choke cable bracket CLAMP SCREW, mounts the choke cable clamp to the choke cable bracket on all XJ650 Maxim, XJ650 Midnight Maxim, XJ650 Euro, XJ650RJ Seca, XJ700 air-cooled models, 1981-83 XJ750 Maxim and Seca, XJ750 Midnight Maxim, and XJ750 Euro models. Beautiful yellow-zinc plating brings the top side of these carbs to life. NOTE: requires a $ 10.00 core charge, refundable upon the return of an undamaged, same-model, same-type screw.
    $ 11.95 + $ 10.00 refundable core charge


    HCP5407RP OEM re-plated carb hat CHOKE CABLE BRACKET, mounted on the #4 hat inner position. Beautiful black-zinc plating brings the top side of these carbs to life. Fits all HSC32-series carbs as used on XJ650 Midnight Maxim and 1983-84 XJ750 Midnight Maxim models. Does not include the HCP5408RP clamp or the HCP2426 clamp screw listed below. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 49.95 + $ 25.00 refundable core charge

    HCP5408RP OEM re-plated carb hat choke cable bracket CLAMP, mounts to the HCP347RP choke cable bracket listed above. Black-zinc plating as original. Fits all HSC32-series carbs as used on XJ650 Midnight Maxim and 1983-84 XJ750 Midnight Maxim models. Does not include the HCP2426 clamp screw listed below. NOTE: requires a $ 15.00 core charge, refundable upon the return of an undamaged, same-model, same-type clamp.
    $ 29.95 + $ 15.00 refundable core charge

    HCP2426RP OEM re-plated carb hat choke cable bracket CLAMP SCREW, mounts the choke cable clamp to the choke cable bracket on all XJ650 Maxim, XJ650 Midnight Maxim, XJ650 Euro, XJ650RJ Seca, XJ700 air-cooled models, 1981-83 XJ750 Maxim and Seca, XJ750 Midnight Maxim, and XJ750 Euro models. Beautiful yellow-zinc plating brings the top side of these carbs to life. NOTE: requires a $ 10.00 core charge, refundable upon the return of an undamaged, same-model, same-type screw.
    $ 11.95 + $ 10.00 refundable core charge



    HCP346RP OEM re-plated carb hat THROTTLE CABLE BRACKET, mounted on the #3 hat inner position. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all HSC32- and HSC33-series carbs as used on XJ650 (except Turbo), XJ700 air-cooled, 1981-84 XJ750, and XJ750 Euro models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 39.95 + $ 25.00 refundable core charge



    Hitachi Carb Hat Clips:

    HCP21520 Aftermarket Hitachi HSC32-series carb hat VACUUM HOSE ROUTING CLIP, use one on the #2 carb rear inner carb hat screw position, on all XJ650 (except Turbo) and 1981-83 XJ750 engines. This “shepherd’s crook” bright plated clip routes the vacuum hose (in the “crook” part of the clip) away from obstacles. Use 1 per carb bank. Perfectly replaces a commonly missing or rusted original. Use 1 per carb. Each:
    $ 9.95

    HCP21523 Aftermarket petcock-to-intake manifold VACUUM HOSE ROUTING CLIP, use one on the #2 carb front inner carb hat screw position, on all XJ700 air-cooled engines. This “shepherd’s crook” bright plated clip routes the vacuum hose (in the “crook” part of the clip) away from obstacles. Use 1 per carb bank. Perfectly replaces a commonly missing or rusted original. Use 1 per carb. Each:
    $ 9.95



    Hitachi Carb Hat Fasteners:

    HSC32 model carbs ----used on all XJ650 and XJ750 with Hitachi carbs except the XJ700 air-cooled models and XJ750RL Seca (1984) models, use the following screw configuration:

    The short screws are used in any position that does not have a clip or bracket associated with it. You will need to use a total of 10 of these short screws per complete carb rack.

    The mid-length screws are used in any position that has a clip or bracket associated with it. You will need to use a total of 6 of these mid-length screws per complete carb rack on the HSC32 model carbs.


    HSC33 model carbs ----used on all XJ700 air-cooled models and the 1984 XJ750RL Seca models, use the following screw configuration:

    Eleven of the mid-length screws, used in all positions except for the positions which secure the end covers, and for the position that secures the vacuum line clip on the #2 carb.

    Five of the long screws, used on the outer carbs outer positions (with the carb end covers) and on the #2 carb with the vacuum line clip.


    NOTE: originally, all carb hat screws were a natural finish, panhead style, phillips-drive with a captive lock washer. Current OEM screws and all aftermarket screws do NOT have an integral lock washer and the lock washer must be ordered separately from the choices listed further below.

    Replacement screws come in a variety of different finish and head drive styles, so please review the descriptions below carefully!



    - These replacement panhead, phillips-drive screws have a natural finish and are made from alloy steel. Use with the HCP326 or HCP922 lock washers listed further below:

    HCP322 OEM Hitachi carb hat short MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive, each:
    $ 2.95

    HCP322SET10 OEM Hitachi carb hat short MOUNTING SCREWS, set of 10:
    $ 21.95



    HCP323 OEM Hitachi carb hat mid-length MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive, each:
    $ 2.95

    HCP323SET6 OEM Hitachi carb hat mid-length MOUNTING SCREWS, set of 6:
    $ 16.95

    HCP323SET11 OEM Hitachi carb hat mid-length MOUNTING SCREWS, set of 11:
    $ 29.95



    HCP4190 OEM Hitachi carb hat long MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive, each:
    $ 2.50

    HCP4190SET5 OEM Hitachi carb hat long MOUNTING SCREWS, set of 5:
    $ 6.95




    HCP918 Aftermarket Hitachi carb hat short MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive, each:
    $ 1.25

    HCP918SET10 Aftermarket Hitachi carb hat short MOUNTING SCREWS, set of 10:
    $ 8.95



    HCP25913 Aftermarket Hitachi carb hat short MOUNTING SCREW, bright zinc-plated alloy steel, panhead, phillips drive, JIS small-head design as original, each:
    $ 2.95

    HCP25913SET10 Aftermarket Hitachi carb hat short MOUNTING SCREWS, set of 10:
    $ 21.95



    HCP919 Aftermarket Hitachi carb hat mid-length MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive, each:
    $ 1.00

    HCP919SET6 Aftermarket Hitachi carb hat mid-length MOUNTING SCREWS, set of 6:
    $ 4.00

    HCP919SET11 Aftermarket Hitachi carb hat mid-length MOUNTING SCREWS, set of 11:
    $ 7.00



    HCP6418 Aftermarket Hitachi carb hat long MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive, each:
    $ 1.50

    HCP6418SET5 Aftermarket Hitachi carb hat long MOUNTING SCREWS, set of 5:
    $ 6.95




    - These replacement panhead, phillips-drive screws have a polished head and are made from an 18-8 stainless steel. Use with the HCP336 lock washers listed further below:

    HCP1355 Aftermarket Hitachi carb hat short MOUNTING SCREW, 18-8 stainless-steel, polished panhead, phillips-drive, each:
    $ 1.25

    HCP1355SET10 Aftermarket Hitachi carb hat short MOUNTING SCREWS, set of 10:
    $ 9.95



    HCP2641 Aftermarket Hitachi carb hat mid-length MOUNTING SCREW, 18-8 stainless-steel, polished panhead, phillips-drive, each:
    $ 1.20

    HCP2641SET6 Aftermarket Hitachi carb hat mid-length MOUNTING SCREWS, set of 6:
    $ 5.00

    HCP2641SET11 Aftermarket Hitachi carb hat mid-length MOUNTING SCREWS, set of 11:
    $ 9.00



    HCP6421 Aftermarket Hitachi carb hat long MOUNTING SCREW, 18-8 stainless-steel, polished panhead, phillips-drive, each:
    $ 2.95

    HCP6421SET5 Aftermarket Hitachi carb hat long MOUNTING SCREWS, set of 5:
    $ 12.95




    - These replacement button-head, hex-drive screws have a polished head and are made from an 18-8 stainless steel. Use with the HCP336 lock washers listed further below:

    HCP332 Aftermarket Hitachi carb hat short MOUNTING SCREW, 18-8 stainless-steel, polished button head, hex-drive, each:
    $ 1.50

    HCP332SET10 Aftermarket Hitachi carb hat short MOUNTING SCREWS, set of 10:
    $ 8.95



    HCP333 Aftermarket Hitachi carb hat mid-length MOUNTING SCREW, 18-8 stainless-steel, polished button head, hex-drive, each:
    $ 1.25

    HCP333SET6 Aftermarket Hitachi carb hat mid-length MOUNTING SCREWS, set of 6:
    $ 5.95

    HCP333SET11 Aftermarket Hitachi carb hat mid-length MOUNTING SCREWS, set of 11:
    $ 8.95



    HCP14239 Aftermarket Hitachi carb hat long MOUNTING SCREW, 18-8 stainless-steel, polished button head, hex-drive, each:
    $ 1.50

    HCP14239SET5 Aftermarket Hitachi carb hat long MOUNTING SCREWS, set of 5:
    $ 6.95




    - These replacement socket-head, hex-drive screws have a smooth polished head and are made from an 18-8 stainless steel. Use with the HCP336 lock washers listed further below:

    HCP329 Aftermarket Hitachi carb hat short MOUNTING SCREW, 18-8 stainless steel, smooth polished socket head, hex-drive, each:
    $ 1.25

    HCP329SET10 Aftermarket Hitachi carb hat short MOUNTING SCREWS, set of 10:
    $ 8.95



    HCP330 Aftermarket Hitachi carb hat mid-length MOUNTING SCREW, 18-8 stainless steel, smooth polished socket head, hex-drive, each:
    $ 1.40

    HCP330SET6 Aftermarket Hitachi carb hat mid-length MOUNTING SCREWS, set of 6:
    $ 4.95

    HCP330SET11 Aftermarket Hitachi carb hat mid-length MOUNTING SCREWS, set of 11:
    $ 7.95


    HCP6424 Aftermarket Hitachi carb hat long MOUNTING SCREW, 18-8 stainless steel, smooth polished socket head, hex-drive, each:
    $ 0.95

    HCP6424SET5 Aftermarket Hitachi carb hat long MOUNTING SCREWS, each:
    $ 3.95




    - These replacement socket-head, hex-drive screws have a ribbed head with a black oxide-coated finish and are made from alloy steel. Use with the HCP342 lock washers listed further below:

    HCP339 Aftermarket Hitachi carb hat short MOUNTING SCREW, black oxide-coated steel, ribbed socket head, hex-drive, each:
    $ 1.20

    HCP339SET10 Aftermarket Hitachi carb hat short MOUNTING SCREWS, set of 10:
    $ 9.00



    HCP340 Aftermarket Hitachi carb hat mid-length MOUNTING SCREW, black oxide-coated steel, ribbed socket head, hex-drive, each:
    $ 1.00

    HCP340SET6 Aftermarket Hitachi carb hat mid-length MOUNTING SCREWS, set of 6:
    $ 4.95

    HCP340SET11 Aftermarket Hitachi carb hat mid-length MOUNTING SCREWS, set of 11:
    $ 7.95



    HCP6423 Aftermarket Hitachi carb hat long MOUNTING SCREW, black oxide-coated steel, ribbed socket head, hex-drive, each:
    $ 0.95

    HCP6423SET5 Aftermarket Hitachi carb hat long MOUNTING SCREWS, each:
    $ 3.95



    k5) Hitachi carb diaphram cover mounting screw LOCK WASHER.

    NOTE: originally, these washers were integral to the mounting screws and featured a natural finish. Current OEM screws and all aftermarket screws do NOT have an integral lock washer and thus the lock washers must be ordered separately from the choices listed below. These lock washers will fit all of the mounting screws listed above.

    HSC32 model carbs ----used on all XJ650 and XJ750 with Hitachi carbs except the XJ700 air-cooled models and XJ750RL Seca (1984) models, use lockwashers on the following screw positions:

    All sixteen (16) carb hat screw positions.


    HSC33 model carbs ----used on all XJ700 air-cooled models and the 1984 XJ750RL Seca models, use lockwashers on the following screw positions:

    All positions that use a long hat screw also use a lockwasher -----used on the outer carbs outer positions (with the carb end covers) and on the #2 carb with the vacuum line clip, a total of 5 per rack.



    HCP326 OEM Hitachi carb hat mounting screw LOCK WASHER, zinc-plated alloy steel, each:
    $ 1.95

    HCP326SET4 OEM Hitachi carb hat mounting screw LOCK WASHERS, set of 4:
    $ 7.50

    HCP326SET5 OEM Hitachi carb hat mounting screw LOCK WASHERS, set of 5:
    $ 8.50

    HCP326SET16 OEM Hitachi carb hat mounting screw LOCK WASHERS, set of 16:
    $ 14.95



    HCP922 Aftermarket Hitachi carb hat mounting screw LOCK WASHER, zinc-plated alloy steel, each:
    $ 0.95

    HCP922SET4 Aftermarket Hitachi carb hat mounting screw LOCK WASHERS, set of 4:
    $ 3.50

    HCP922SET5 Aftermarket Hitachi carb hat mounting screw LOCK WASHERS, set of 5:
    $ 4.25

    HCP922SET16 Aftermarket Hitachi carb hat mounting screw LOCK WASHERS, set of 16:
    $ 7.95



    HCP336 Aftermarket Hitachi carb hat mounting screw LOCK WASHER, 18-8 stainless-steel, each:
    $ 0.95

    HCP336SET4 Aftermarket Hitachi carb hat mounting screw LOCK WASHERS, set of 4:
    $ 3.50

    HCP336SET5 Aftermarket Hitachi carb hat mounting screw LOCK WASHERS, set of 5:
    $ 4.25

    HCP336SET16 Aftermarket Hitachi carb hat mounting screw LOCK WASHERS, set of 16:
    $ 7.95



    HCP342 Aftermarket Hitachi carb hat mounting screw LOCK WASHER, black oxide-coated alloy steel, each:
    $ 0.95

    HCP342SET4 Aftermarket Hitachi carb hat mounting screw LOCK WASHERS, set of 4:
    $ 3.25

    HCP342SET5 Aftermarket Hitachi carb hat mounting screw LOCK WASHERS, set of 5:
    $ 3.95

    HCP342SET16 Aftermarket Hitachi carb hat mounting screw LOCK WASHERS, set of 16:
    $ 8.95



    k5) Hitachi carb diaphram cover mounting screw FLAT WASHER.

    NOTE: originally featured a natural finish.

    HSC32 model carbs ----used on all XJ650 and XJ750 with Hitachi carbs except the XJ700 air-cooled models and XJ750RL Seca (1984) models, use flat washers on the following screw positions:

    Use 1 per carb rack, on the #2 carb rear position where the vacuum line clip attaches (this position receives both a lock washer and a flat washer). .


    HSC33 model carbs ----used on all XJ700 air-cooled models and the 1984 XJ750RL Seca models, use flat washers on the following screw positions:

    All positions that use a long hat screw also use a flat washer -----used on the outer carbs outer positions (with the carb end covers) and on the #2 carb with the vacuum line clip, a total of 5 per rack.


    HCP328 OEM Hitachi carb hat mounting screw FLAT WASHER, zinc-plated alloy-steel, each:
    $ 1.95

    HCP328SET5 OEM Hitachi carb hat mounting screw FLAT WASHERS, set of 5:
    $ 7.50


    HCP924 Aftermarket Hitachi carb hat mounting screw FLAT WASHER, zinc-plated alloy-steel, each:
    $ 0.95

    HCP924SET5 Aftermarket Hitachi carb hat mounting screw FLAT WASHERS, set of 5:
    $ 4.50


    HCP338 Aftermarket Hitachi carb hat mounting screw FLAT WASHER, 18-8 stainless-steel, each:
    $ 0.95

    HCP338SET5 Aftermarket Hitachi carb hat mounting screw FLAT WASHERS, set of 5:
    $ 4.50


    HCP28050 Aftermarket Hitachi carb hat mounting screw FLAT WASHER, grade 316 stainless-steel, each:
    $ 0.95

    HCP28050SET5 Aftermarket Hitachi carb hat mounting screw FLAT WASHERS, set of 5:
    $ 4.75


    HCP1356 Aftermarket Hitachi carb hat mounting screw FLAT WASHER, black oxide-coated alloy steel, each:
    $ 1.95

    HCP1356SET5 Aftermarket Hitachi carb hat mounting screw FLAT WASHER, set of 5:
    $ 7.95




    HITACHI CARB STARTER / ENRICHMENT / CHOKE CIRCUIT HARDWARE:

    Hitachi Carb Starter - Enrichment (“Choke”) Circuit Shaft and Brackets:

    Our re-plated Hitachi starter - enrichment (“choke”) circuit SHAFTS AND BRACKETS allow you to re-create the original look and beauty of these carb racks. These parts are available re-plated to their correct original yellow-zinc or black-zinc appearance. If you need to replace any missing hardware, or just want to create a show-winning look, then you should start your shopping list here! NOTE: all enrichment circuit shafts and brackets are re-plated, used parts, and as such, may have minor cosmetic flaws (tooling marks, fastener marks, etc.). Most such marks will not be visible once installed. Also, all re-plated items require a refundable core charge which will be credited back to you once you return a same-model, same-type of item(s) as you purchased. Since these are re-plated used parts, we do require an exchange for your original parts so we can have a steady supply of parts to be processed and re-plated for future sales.

    HCP27RP OEM re-plated carb starter - enrichment (“choke”) circuit ACTUATING SHAFT, long round shaft that carries the choke plunger lifter “finger” brackets. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all HSC32-series carbs as used on XJ650 Maxim, XJ650 Euro, XJ650RJ Seca, 1981-83 XJ750 Maxim and Seca, and XJ750 Euro models. Will also fit all XJ650 Midnight Maxim and XJ750 Midnight Maxim models but has a non-correct finish. NOTE: requires a $ 20.00 core charge, refundable upon the return of an undamaged, same-model, same-type shaft.
    $ 29.95 + $ 20.00 refundable core charge

    HCP5249RP OEM re-plated carb starter - enrichment (“choke”) circuit ACTUATING SHAFT, long round shaft that carries the choke plunger lifter “finger” brackets. Black-zinc plating as original. Fits HSC32-series carbs as used on XJ650 Midnight Maxim and XJ750 Midnight Maxim models. NOTE: requires a $ 20.00 core charge, refundable upon the return of an undamaged, same-model, same-type shaft.
    $ 39.95 + $ 20.00 refundable core charge

    HCP5250RP OEM re-plated carb starter - enrichment (“choke”) circuit ACTUATING SHAFT, long round shaft that carries the choke plunger lifter “finger” brackets. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits HSC33-series carbs as used on XJ700 air-cooled models and 1984 XJ750RL carbs. NOTE: requires a $ 20.00 core charge, refundable upon the return of an undamaged, same-model, same-type shaft.
    $ 49.95 + $ 20.00 refundable core charge



    HCP5235RP OEM re-plated carb starter - enrichment (“choke”) circuit ACTUATING BRACKET, this is the V-shaped bracket (with the cable-end clasp) which is screwed onto the actuating shaft listed above. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all HSC32- and HSC33-series carbs as used on all XJ650 Maxim, XJ700 air-cooled, 1981-83 XJ750, and XJ750 Euro models. Will also fit all XJ650 Midnight Maxim and XJ750 Midnight Maxim models but has a non-correct finish. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 29.95 + $ 25.00 refundable core charge

    HCP5236RP OEM re-plated carb starter - enrichment (“choke”) circuit ACTUATING BRACKET, long round shaft that carries the choke plunger lifter “finger” brackets. Black-zinc plating as original. Fits HSC32-series carbs as used on XJ650 Midnight Maxim and XJ750 Midnight Maxim models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 39.95 + $ 25.00 refundable core charge



    HCP5251RP-SET4 OEM re-plated carb starter - enrichment (“choke”) circuit PLUNGER LIFTER BRACKETS, set of 4 of the choke plunger-lifter “finger” brackets. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all HSC32- and HSC33-series carbs as used on all XJ650 Maxim, XJ700 air-cooled, 1981-83 XJ750, and XJ750 Euro models. Will also fit all XJ650 Midnight Maxim and XJ750 Midnight Maxim models but has a non-correct finish. NOTE: requires a $ 20.00 core charge, refundable upon the return of an undamaged, same-model, same-type lifter brackets.
    $ 28.95 + $ 20.00 refundable core charge

    HCP5252RP-SET4 OEM re-plated carb starter - enrichment (“choke”) circuit PLUNGER LIFTER BRACKETS, set of 4 of the choke plunger-lifter “finger” brackets. Black-zinc plating as original. Fits HSC32-series carbs as used on XJ650 Midnight Maxim and XJ750 Midnight Maxim models. NOTE: requires a $ 20.00 core charge, refundable upon the return of an undamaged, same-model, same-type lifter brackets.
    $ 34.95 + $ 20.00 refundable core charge



    Hitachi Carb Starter - Enrichment Circuit Cable Brackets:

    HCP347RP OEM re-plated carb hat CHOKE CABLE BRACKET, mounted on the #4 hat inner position. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all HSC32-series carbs as used on XJ650 Maxim, XJ650 Euro, XJ650RJ Seca, 1981-83 XJ750 Maxim and Seca, and XJ750 Euro models. Will also fit all XJ650 Midnight Maxim and XJ750 Midnight Maxim models but has a non-correct finish. Does not include the HCP2425RP clamp or the HCP2426 clamp screw listed below. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 39.95 + $ 25.00 refundable core charge

    HCP23261RP OEM re-plated carb hat CHOKE CABLE BRACKET, mounted on the #4 hat inner position. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all HSC33-series carbs as used on XJ700 air-cooled and 1984 XJ750RL Seca models. Does not include the HCP2425RP clamp or the HCP2426 clamp screw listed below. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 49.95 + $ 25.00 refundable core charge

    HCP2425RP OEM re-plated carb hat choke cable bracket CLAMP, mounts to the HCP347RP choke cable bracket listed above. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all HSC32-series carbs as used on XJ650 Maxim, XJ650 Euro, XJ650RJ Seca, XJ700 air-cooled models, 1981-83 XJ750 Maxim and Seca, and XJ750 Euro models. Will also fit all XJ650 Midnight Maxim and XJ750 Midnight Maxim models but has a non-correct finish. Does not include the HCP2426 clamp screw listed below. NOTE: requires a $ 15.00 core charge, refundable upon the return of an undamaged, same-model, same-type clamp.
    $ 19.95 + $ 15.00 refundable core charge

    HCP2426RP OEM re-plated carb hat choke cable bracket CLAMP SCREW, mounts the choke cable clamp to the choke cable bracket on all XJ650 Maxim, XJ650 Midnight Maxim, XJ650 Euro, XJ650RJ Seca, XJ700 air-cooled models, 1981-83 XJ750 Maxim and Seca, XJ750 Midnight Maxim, and XJ750 Euro models. Beautiful yellow-zinc plating brings the top side of these carbs to life. NOTE: requires a $ 10.00 core charge, refundable upon the return of an undamaged, same-model, same-type screw.
    $ 11.95 + $ 10.00 refundable core charge


    HCP5407RP OEM re-plated carb hat CHOKE CABLE BRACKET, mounted on the #4 hat inner position. Beautiful black-zinc plating brings the top side of these carbs to life. Fits all HSC32-series carbs as used on XJ650 Midnight Maxim and 1983-84 XJ750 Midnight Maxim models. Does not include the HCP5408RP clamp or the HCP2426 clamp screw listed below. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 49.95 + $ 25.00 refundable core charge

    HCP5408RP OEM re-plated carb hat choke cable bracket CLAMP, mounts to the HCP347RP choke cable bracket listed above. Black-zinc plating as original. Fits all HSC32-series carbs as used on XJ650 Midnight Maxim and 1983-84 XJ750 Midnight Maxim models. Does not include the HCP2426 clamp screw listed below. NOTE: requires a $ 15.00 core charge, refundable upon the return of an undamaged, same-model, same-type clamp.
    $ 29.95 + $ 15.00 refundable core charge

    HCP2426RP OEM re-plated carb hat choke cable bracket CLAMP SCREW, mounts the choke cable clamp to the choke cable bracket on all XJ650 Maxim, XJ650 Midnight Maxim, XJ650 Euro, XJ650RJ Seca, XJ700 air-cooled models, 1981-83 XJ750 Maxim and Seca, XJ750 Midnight Maxim, and XJ750 Euro models. Beautiful yellow-zinc plating brings the top side of these carbs to life. NOTE: requires a $ 10.00 core charge, refundable upon the return of an undamaged, same-model, same-type screw.
    $ 11.95 + $ 10.00 refundable core charge



    HCP346RP OEM re-plated carb hat THROTTLE CABLE BRACKET, mounted on the #3 hat inner position. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all HSC32- and HSC33-series carbs as used on XJ650 (except Turbo), XJ700 air-cooled, 1981-84 XJ750, and XJ750 Euro models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 39.95 + $ 25.00 refundable core charge



    Hitachi Carb Starter - Enrichment Circuit Fasteners:

    xx4) Aftermarket Hitachi Starter-Enrichment Circuit Arm-to-Shaft SET SCREW. These replacement screws are used to retain the starter lever "finger" bracket to the starter circuit shaft. Use 4 of these screws per rack. NOTE: originally, these screws had a natural finish, with a straight slot (flat) head style drive. All aftermarket screws feature an allen-head drive and are slightly shorter (about 1mm) or longer (about 1mm) than the original set screws, but that length differences causes no operational or interference problems.


    HCP21376 Aftermarket Hitachi enrichment circuit lever arm-to-shaft SET SCREW, original straight-slot design, zinc-plated alloy steel. Slightly shorter than stock. Each:
    $ 1.95

    HCP21376SET4 Aftermarket Hitachi enrichment circuit lever arm-to-shaft SET SCREWS, set of 4:
    $ 7.50


    HCP21375 Aftermarket Hitachi enrichment circuit lever arm-to-shaft SET SCREW, original straight-slot design, 18-8 stainless steel. Slightly shorter than stock. Each:
    $ 1.95

    HCP21375SET4 Aftermarket Hitachi enrichment circuit lever arm-to-shaft SET SCREWS, set of 4:
    $ 7.50


    HCP299 Aftermarket Hitachi enrichment circuit lever arm-to-shaft SET SCREW, hex-key drive, black oxide coated alloy steel. Slightly longer than stock. Each:
    $ 1.95

    HCP299SET4 Aftermarket Hitachi enrichment circuit lever arm-to-shaft SET SCREWS, set of 4:
    $ 6.95


    HCP300 Aftermarket Hitachi enrichment circuit lever arm-to-shaft SET SCREW, hex-key drive, 18-8 stainless steel. Slightly longer than stock. Each:
    $ 1.95

    HCP300SET4 Aftermarket Hitachi enrichment circuit lever arm-to-shaft SET SCREWS, set of 4:
    $ 6.95



    xx5) Hitachi Starter-Enrichment SHAFT RETAINING SCREW, used to retain the starter shaft bracket to the starter circuit shaft. Use 1 of these screws per rack. NOTE: originally, these panhead screws had a natural finish, with a phillips-head drive system, and a captive lock washer. All OEM and aftermarket screws do not come with the captive lock washer, and a lock washer needs to be ordered separate.

    HCP292 OEM Hitachi enrichment circuit SHAFT RETAINING SCREW, black oxide coated alloy steel, panhead, phillips-drive. Use with the HCP296 or HCP298 lock washer listed further below. Each:
    $ 1.50

    HCP898 Aftermarket Hitachi enrichment circuit SHAFT RETAINING SCREW, zinc-plated alloy steel, panhead, phillips-drive. Use with the HCP297 lock washer listed further below. Each:
    $ 1.50

    HCP293 Aftermarket Hitachi enrichment circuit SHAFT RETAINING SCREW, panhead, phillips-drive, 18-8 stainless steel. Use with the HCP297 lock washer listed further below. Each:
    $ 2.50

    HCP294 Aftermarket Hitachi enrichment circuit SHAFT RETAINING SCREW, 18-8 stainless steel, socket-head, hex-drive. Use with the HCP297 lock washer listed further below. Each:
    $ 1.00

    HCP21403 Aftermarket Hitachi enrichment circuit SHAFT RETAINING SCREW, 18-8 stainless steel, button-head, hex-drive. Use with the HCP297 lock washer listed further below. Each:
    $ 1.00

    HCP295 Aftermarket Hitachi enrichment circuit SHAFT RETAINING SCREW, black oxide coated alloy steel, socket-head, hex-drive. Use with the HCP298 lock washer listed further below. Each:
    $ 1.00



    xx6) Hitachi enrichment shaft retainer screw LOCK WASHER, use with the above retainer screws. Use 1 of these washers per rack. NOTE: originally, the retainer screw came with a captive lock washer; all OEM and aftermarket screws do not come with the captive lock washer, and a lock washer needs to be ordered separate.


    HCP296 OEM Hitachi enrichment shaft retainer screw LOCK WASHER, zinc-plated alloy steel. Use with the HCP292 retaining screw listed above. Each:
    $ 1.50

    HCP297 Aftermarket Hitachi enrichment shaft retainer screw LOCK WASHER, 18-8 stainless steel. Use with the HCP293, HCP898, HCP21403, or HCP294 retaining screw listed above. Each:
    $ 0.95

    HCP298 Aftermarket Hitachi enrichment shaft retainer screw LOCK WASHER, black oxide coated alloy steel. Use with the HCP292 or HCP295 retaining screw listed above. Each:
    $ 0.95




    HITACHI CARB UPPER RACK BRACKET HARDWARE:

    Hitachi Carb Upper Rack Brackets:

    Our re-plated Hitachi upper rack individual BRACKETS allow you to re-create the original look and beauty of these carb racks. These parts are available re-plated to their correct original yellow-zinc or black-zinc appearance. If you need to replace any missing hardware, or just want to create a show-winning look, then you should start your shopping list here! NOTE: all upper rack brackets are re-plated, used parts, and as such, may have minor cosmetic flaws (tooling marks, fastener marks, etc.). Most such marks will not be visible once installed. Also, all re-plated items require a refundable core charge which will be credited back to you once you return a same-model, same-type of item(s) as you purchased. Since these are re-plated used parts, we do require an exchange for your original parts so we can have a steady supply of parts to be processed and re-plated for future sales.


    HCP85RP OEM re-plated carb upper rack lateral BRACKET, long L-shaped bracket carries and aligns all four carb bodies. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all HSC32-series carbs as used on XJ650 Maxim, XJ650 Euro, XJ650RJ Seca, 1981-83 XJ750 Maxim and Seca, and XJ750 Euro models. Will also fit all XJ650 Midnight Maxim and XJ750 Midnight Maxim models but has a non-correct finish. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 29.95 + $ 25.00 refundable core charge

    HCP20992RP OEM re-plated carb upper rack lateral BRACKET, long L-shaped bracket carries and aligns all four carb bodies. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all HSC33-series carbs as used on XJ700 air-cooled models and 1984 XJ750RL Seca models. Will also fit all XJ650 Midnight Maxim and XJ750 Midnight Maxim models but has a non-correct finish. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 49.95 + $ 25.00 refundable core charge

    HCP5405RP OEM re-plated carb upper rack lateral BRACKET, long L-shaped bracket carries and aligns all four carb bodies. Black-zinc plating as original. Fits HSC32-series carbs as used on XJ650 Midnight Maxim and XJ750 Midnight Maxim models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 39.95 + $ 20.00 refundable core charge



    Hitachi Carb Upper Rack Bracket Clips:

    HCP21525 Aftermarket Hitachi carb rack CLUTCH CABLE ROUTING CLIP, mounts on the upper rack bracket, #3 carb outer position, on all XJ650 (except Turbo), all XJ700 air-cooled, all XJ750 Seca, XJ750 Euro, and XJ750P (37H) models. Heavy wire "shepherd's crook" shaped clip is secured by the upper rack bracket screw, captures and properly routes the clutch cable on its way to the clutch cover area. Perfectly replaces a commonly missing or rusted original. Use 1 per carb.
    $ 8.95

    HCP21526 Aftermarket carb body port VACUUM HOSE ROUTING CLIP, use one on the #1 and the #4 carb upper rack bracket outer screw position, on all 1985 XJ700 air-cooled engines. This small bright plated clip routes the long vacuum hose (in the “crook” part of the clip), that comes off the mixture screw ports, away from obstacles. Perfectly replaces a commonly missing or rusted original. Use 2 per carb bank. Each:
    $ 8.95



    Hitachi Carb Upper Rack Bracket Fasteners:

    a7) Aftermarket Hitachi carb upper rack bracket MOUNTING SCREWS, available in both the short and long versions, and in a variety of original and aftermarket styles and finishes.

    The short screws are used in every position EXCEPT the #6 screw hole which also holds the clutch cable routing clip. Use 7 of these screws per rack to mount the carbs.

    The long screw is used in the #6 position that has the clutch cable routing clip or bracket associated with it. You will need to use 1 of these long screws per complete carb rack.

    NOTE: originally, these screws were a natural finish, panhead phillips-drive style with a captive lock washer. Current OEM screws and all aftermarket screws do NOT have an integral lock washer and the lock washer must be ordered separately from the choices listed further below.

    Also, please note that these screws were originally installed (and should be re-installed) with a low-strength thread locking fluid applied. Therefore, these screws may be VERY difficult to remove and it is highly recommended that you obtain the correct size JIS style screwdriver (or an impact driver) to remove them without stripping the slots.


    - These replacement panhead phillips-drive screws have a natural finish and are made from alloy steel. Use with the HCP913 lock washers listed further below:

    HCP60 OEM Hitachi carb upper rack bracket short MOUNTING SCREW, alloy steel, natural finish, panhead phillips-drive. Use with the HCP913 lock washers listed below. Each.
    $ 2.95

    HCP60SET7 OEM Hitachi carb upper rack bracket short MOUNTING SCREWS, set of 7.
    $ 18.95


    HCP168 OEM Hitachi carb upper rack bracket short MOUNTING SCREW, black oxide-coated steel, panhead phillips-drive. For use on XJ650 Midnight Maxim and XJ750 Midnight Maxim models only. Use the HCP59 lock washers and HCP65 flat washer listed below. Each.
    $ 1.00

    HCP168SET7 OEM Hitachi carb upper rack bracket short MOUNTING SCREWS, set of 7.
    $ 6.00



    HCP304 OEM Hitachi carb upper rack bracket long MOUNTING SCREW, alloy steel with a natural finish, panhead phillips-drive. Use the HCP913 lock washers and HCP914 flat washer listed below. Each.
    $ 4.95

    HCP4561 OEM Hitachi carb upper rack bracket long MOUNTING SCREW, black oxide-coated steel, panhead phillips-drive. For use on XJ650 Midnight Maxim and XJ750 Midnight Maxim models only. Use the HCP59 lock washers and HCP65 flat washer listed below. Each.
    $ 2.95

    HCP24040 Aftermarket Hitachi carb upper rack bracket long MOUNTING SCREW, black oxide-coated steel, panhead phillips-drive. For use on XJ650 Midnight Maxim and XJ750 Midnight Maxim models only. Use the HCP59 lock washers and HCP65 flat washer listed below. Each.
    $ 1.95



    HCP910 Aftermarket Hitachi carb upper rack bracket short MOUNTING SCREW, alloy steel, natural finish, panhead phillips-drive. Use with the HCP913 lock washers listed below. Each.
    $ 1.50

    HCP910SET7 Aftermarket Hitachi carb upper rack bracket short MOUNTING SCREWS, set of 7.
    $ 9.95


    HCP911 Aftermarket Hitachi carb upper rack bracket long MOUNTING SCREW, alloy steel, natural finish, panhead phillips-drive. Use the HCP913 lock washers and HCP914 flat washer listed below. Each.
    $ 1.95




    - These replacement panhead phillips-drive screws have a polished finish and are made from 18-8 stainless steel. Use with the HCP57 lock washers listed further below:

    HCP62 Aftermarket Hitachi carb upper rack bracket short MOUNTING SCREW, 18-8 stainless steel panhead phillips-drive. Use with the HCP57 lock washers listed below. Each.
    $ 1.50

    HCP62SET7 Aftermarket Hitachi carb upper rack bracket short MOUNTING SCREWS, set of 7.
    $ 9.95


    HCP307 Aftermarket Hitachi carb upper rack bracket long MOUNTING SCREW, 18-8 stainless steel panhead phillips-drive. Use the HCP57 lock washers and HCP1353 flat washer listed below. Each.
    $ 1.50




    - These replacement button head hex-drive screws have a polished finish and are made from 18-8 stainless steel. Use with the HCP57 lock washers listed further below:

    HCP308 Aftermarket Hitachi carb upper rack bracket short MOUNTING SCREW, 18-8 stainless steel with a button head and hex-drive. Use with the HCP57 lock washers listed below. Each.
    $ 1.25

    HCP308SET7 Aftermarket Hitachi carb upper rack bracket short MOUNTING SCREWS, set of 7.
    $ 6.00


    HCP309 Aftermarket Hitachi carb upper rack bracket long MOUNTING SCREW, 18-8 stainless steel with a button head and hex-drive. Use the HCP57 lock washers and HCP1353 flat washer listed below. Each.
    $ 1.00




    - These replacement socket head hex-drive screws have a smooth, polished head and are made from 18-8 stainless steel. Use with the HCP57 lock washers listed further below:

    HCP310 Aftermarket Hitachi carb upper rack bracket short MOUNTING SCREW, 18-8 stainless steel with a socket head, hex-drive style. Use with the HCP57 lock washers listed below. Each.
    $ 1.50

    HCP310SET7 Aftermarket Hitachi carb upper rack bracket short MOUNTING SCREWS, set of 7.
    $ 6.25


    HCP311 Aftermarket Hitachi carb upper rack bracket long MOUNTING SCREW, 18-8 stainless steel with a socket head, hex-drive style. Use the HCP57 lock washers and HCP1353 flat washer listed below. Each.
    $ 1.00




    - These replacement socket head hex-drive screws have a black oxide-coated finish and are made from alloy steel. Use with the HCP59 lock washers listed further below:

    HCP64 Aftermarket Hitachi carb upper rack bracket short MOUNTING SCREW, black-oxide coated alloy steel, with a socket head, hex-drive style. Use with the HCP59 lock washers listed below. Each.
    $ 1.00

    HCP64SET7 Aftermarket Hitachi carb upper rack bracket short MOUNTING SCREWS, set of 7.
    $ 4.95


    HCP312 Aftermarket Hitachi carb upper rack bracket long MOUNTING SCREW, black-oxide coated alloy steel, with a socket head, hex-drive style. Use the HCP59 lock washers and HCP65 flat washer listed below. Each.
    $ 1.50




    c7) Aftermarket Hitachi carb upper rack bracket mounting screw LOCK WASHER. These replacement lock washers are used in all 8 positions. Use 8 of these lock washers per rack. NOTE: originally, these washers were a natural finish. Current OEM screws and all aftermarket screws do NOT have an integral lock washer and the lock washer must be ordered separately from the choices listed below.


    HCP913 Aftermarket Hitachi carb upper rack bracket mounting screw LOCK WASHER, zinc-plated alloy steel. Use with the HCP60, HCP304, HCP910, and HCP911 screws listed above. Each.
    $ 1.00

    HCP913SET8 Aftermarket Hitachi carb upper rack bracket mounting screw LOCK WASHERS, set of 8.
    $ 3.00



    HCP57 Aftermarket Hitachi carb upper rack bracket mounting screw LOCK WASHER, 18-8 stainless steel. Use with the HCP62, HCP307, HCP308, HCP309, HCP310, and HCP311 screws listed above. Each.
    $ 1.00

    HCP57SET8 Aftermarket Hitachi carb upper rack bracket mounting screw LOCK WASHERS, set of 8.
    $ 5.95



    HCP59 Aftermarket Hitachi carb upper rack bracket mounting screw LOCK WASHER, black oxide coated alloy steel. Use with the HCP64 and HCP312 screws listed above. Each.
    $ 1.00

    HCP59SET8 Aftermarket Hitachi carb upper rack bracket mounting screw LOCK WASHERS, black, set of 8.
    $ 5.50



    d7) Aftermarket Hitachi carb upper rack bracket mounting screw FLAT WASHER. These replacement flat washers are used in only the #6 screw hole which also holds the clutch cable routing clip. Use 1 of these screws per rack. NOTE: originally, these washers were a natural finish.


    HCP914 Aftermarket Hitachi carb upper rack bracket mounting screw FLAT WASHER, alloy steel with a natural finish. Use with the HCP304 or HCP911 screws listed above. Each.
    $ 1.00


    HCP1353 Aftermarket Hitachi carb upper rack bracket mounting screw FLAT WASHER, 18-8 stainless steel. Use with the HCP307, HCP309, or HCP311 screws listed above. Each.
    $ 1.00


    HCP65 Aftermarket Hitachi carb upper rack bracket mounting screw FLAT WASHER, black oxide coated alloy steel. Use with the HCP312 screw listed above. Each.
    $ 1.95



    HITACHI CARB LOWER RACK BRACKET HARDWARE:

    Hitachi Carb Lower Rack Brackets:

    Our re-plated Hitachi lower rack individual BRACKETS allow you to re-create the original look and beauty of these carb racks. These parts are available re-plated to their correct original yellow-zinc or black-zinc appearance. If you need to replace any missing hardware, or just want to create a show-winning look, then you should start your shopping list here! NOTE: all lower rack brackets are re-plated, used parts, and as such, may have minor cosmetic flaws (tooling marks, fastener marks, etc.). Most such marks will not be visible once installed. Also, all re-plated items require a refundable core charge which will be credited back to you once you return a same-model, same-type of item(s) as you purchased. Since these are re-plated used parts, we do require an exchange for your original parts so we can have a steady supply of parts to be processed and re-plated for future sales.


    HCP21001RP OEM re-plated carb lower rack lateral BRACKET, long L-shaped bracket carries and aligns all four carb bodies as well as providing the loop bracket for the idle speed adjustment bolt. Beautiful silver-zinc plating brings the bottom side of these carbs to life. Fits all HSC32-series carbs as used on all 1980 XJ650 Maxim and XJ650 Euro models, and possibly some very early 1981 XJ650 Maxim and Euro model carbs. This style bracket has a small, “split loop” where the idle speed control bolt passes thru it, and does not use (nor will accept) the HCP9849 grommet below. Will also replace XJ650 Midnight Maxim models which use this style bracket, but has a non-correct finish. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 39.95 + $ 25.00 refundable core charge

    HCP5406RP OEM re-plated carb lower rack lateral BRACKET, long L-shaped bracket carries and aligns all four carb bodies as well as providing the loop bracket for the idle speed adjustment bolt. Black-zinc plating as original. Fits HSC32-series carbs as used on some very early 1981 XJ650 Midnight Maxim model carbs. This style bracket has a small, “split loop” where the idle speed control bolt passes thru it, and does not use (nor will accept) the HCP9849 grommet below. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 49.95 + $ 25.00 refundable core charge


    HCP86RP OEM re-plated carb lower rack lateral BRACKET, long L-shaped bracket carries and aligns all four carb bodies as well as providing the loop bracket for the idle speed adjustment bolt. Beautiful silver-zinc plating brings the bottom side of these carbs to life. Fits all HSC32-series carbs as used on most 1981-84 XJ650 Maxim and XJ650 Euro models, all 1981-83 XJ750 Maxim and Seca models, and XJ750 Euro models. This style bracket has a large, “full-circle loop” where the idle speed control bolt passes thru it, and requires the use of the HCP9849 grommet below[/b]. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 29.95 + $ 25.00 refundable core charge

    HCP21002RP OEM re-plated carb lower rack lateral BRACKET, long L-shaped bracket carries and aligns all four carb bodies as well as providing the loop bracket for the idle speed adjustment bolt. Black-zinc plating as original. Fits HSC32-series carbs as used on most XJ650 Midnight Maxim models and all 1983-84 XJ750 Midnight Maxim carbs. This style bracket has a large, “full-circle loop” where the idle speed control bolt passes thru it, and requires the use of the HCP9849 grommet below[/b]. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 49.95 + $ 25.00 refundable core charge


    HCP20991RP OEM re-plated carb lower rack lateral BRACKET, long L-shaped bracket carries and aligns all four carb bodies as well as providing the loop bracket for the idle speed adjustment bolt. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all HSC33-series carbs as used on XJ700 air-cooled models and 1984 XJ750RL Seca models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 39.95 + $ 25.00 refundable core charge



    HCP9849 Aftermarket Hitachi idle speed screw rubber GROMMET, fits into the lower carb rack bracket opening where the idle speed screw enters the bracket. This replacement grommet is quite a bit larger than the stock grommet, but fits and works properly. Use a little bit of silicone grease on the screw's shaft where it passes through this grommet and it will be silky-smooth in operation. Fits all XJ650 (except Turbo) with the "long" idle speed bolt bracket, all XJ700 non-X, and all air-cooled XJ750 models using Hitachi carbs. NOTE: all 1980 and some 1981 XJ650 models used a lower rack bracket with "short" idle speed bolt guide bracket. This "short" bracket can be identified by a "split" in the loop which the idle speed adjustment bolt passes through. Most 1981-84 XJ650 models used a "long" style lower rack bracket, and this style bracket can be identified by a fully closed "loop" where the idle speed adjustment bolt passes through it and the use of a rubber grommet. The early style "short" guide bracket does not use a grommet around the idle speed adjustment bolt. This replacement grommet replaces the original grommet on the late style "long" guide bracket.
    $ 1.95




    Hitachi Carb Lower Rack Bracket Fasteners:

    e7) Aftermarket Hitachi carb lower rack bracket MOUNTING SCREW. These replacement screws are used in every position of the lower rack bar to mount the carbs. Use 8 of these screws per rack.

    NOTE: originally, these screws were a natural finish (except for Midnight Maxim models, which were black), panhead phillips-drive style with a captive lock washer. Current OEM screws and all aftermarket screws do NOT have an integral lock washer and the lock washer must be ordered separately from the choices listed further below.

    Also, please note that these screws were originally installed (and should be re-installed) with a low-strength thread locking fluid applied. Therefore, these screws may be VERY difficult to remove and it is highly recommended that you obtain the correct size JIS style screwdriver (or an impact driver) to remove them without stripping the slots.


    - These replacement panhead, phillips-drive screws have a zinc-plated finish and are made from alloy steel. Use with the HCP916 lock washers listed further below:

    HCP314 OEM Hitachi carb lower rack bracket MOUNTING SCREW, zinc-plated alloy steel, panhead, phillips-drive. Use the HCP916 lock washers listed below. Each.
    $ 3.95

    HCP314SET8 OEM Hitachi carb lower rack bracket MOUNTING SCREWS, set of 8.
    $ 29.95



    HCP915 Aftermarket Hitachi carb lower rack bracket MOUNTING SCREW, zinc-plated alloy steel, panhead, phillips-drive. Use the HCP916 lock washers listed below. Each.
    $ 1.95

    HCP915SET8 Aftermarket Hitachi carb lower rack bracket MOUNTING SCREWS, set of 8.
    $ 11.95



    - These replacement panhead, phillips-drive screws have a polished head and are made from 18-8 stainless steel. Use with the HCP319 lock washers listed further below:

    HCP316 Aftermarket Hitachi carb lower rack bracket MOUNTING SCREW, 18-8 stainless steel, panhead, phillips-drive. Use the HCP319 lock washers listed below. Each.
    $ 1.95

    HCP316SET8 Aftermarket Hitachi carb lower rack bracket MOUNTING SCREWS, set of 8.
    $ 11.95



    - These replacement button head, hex-drive screws have a polished head and are made from 18-8 stainless steel. Use with the HCP319 lock washers listed further below:

    HCP317 Aftermarket Hitachi carb lower rack bracket MOUNTING SCREW, 18-8 stainless steel with a polished button head, hex-drive. Use the HCP319 lock washers listed below. Each.
    $ 2.50

    HCP317SET8 Aftermarket Hitachi carb lower rack bracket MOUNTING SCREWS, set of 8.
    $ 16.95



    - These replacement socket head, hex-drive screws have a smooth polished head and are made from 18-8 stainless steel. Use with the HCP319 lock washers listed further below:

    HCP318 Aftermarket Hitachi carb lower rack bracket MOUNTING SCREW, 18-8 stainless steel smooth polished socket head, hex-drive. Use the HCP319 lock washers listed below. Each.
    $ 2.50

    HCP318SET8 Aftermarket Hitachi carb lower rack bracket MOUNTING SCREWS, set of 8.
    $ 16.95



    - These replacement panhead, phillips-drive screws have a black finish and are made from alloy steel. Use with the HCP321 lock washers listed further below:

    HCP5335 OEM Hitachi carb lower rack bracket MOUNTING SCREW, alloy steel with a black finish, panhead, phillips-drive. Use the HCP321 lock washers listed below. Originally used on XJ650 Midnight Maxim and XJ750 Midnight Maxim models. Each:
    $ 2.95

    HCP5335SET8 OEM Hitachi carb lower rack bracket MOUNTING SCREWS, set of 8.
    $ 19.95



    - These replacement socket head, hex-drive screws have a black oxide-coated finish and are made from alloy steel. Use with the HCP321 lock washers listed further below:

    HCP320 Aftermarket Hitachi carb lower rack bracket MOUNTING SCREW, black-oxide coated alloy steel with a ribbed socket head, and hex-drive. Use the HCP321 lock washers listed below. Each.
    $ 1.95

    HCP320SET8 Aftermarket Hitachi carb lower rack bracket MOUNTING SCREWS, set of 8.
    $ 11.95




    e7a) Aftermarket Hitachi carb lower rack bracket mounting screw LOCK WASHER. These replacement lock washers are used in all 8 positions. Use 8 of these lock washers per rack. NOTE: originally, these washers were a natural finish. Current OEM screws and all aftermarket screws do NOT have an integral lock washer and the lock washer must be ordered separately from the choices listed below.


    HCP916 Aftermarket Hitachi carb lower rack bracket mounting screw LOCK WASHER, zinc-plated alloy steel. Use with the HCP314 and HCP915 screws listed above. Each.
    $ 1.00

    HCP916SET8 Aftermarket Hitachi carb lower rack bracket mounting screw LOCK WASHERS, set of 8.
    $ 5.95



    HCP319 Aftermarket Hitachi carb lower rack bracket mounting screw LOCK WASHER, 18-8 stainless steel. Use with the HCP316, HCP317, and HCP318 screws listed above. Each.
    $ 1.00

    HCP319SET8 Aftermarket Hitachi carb lower rack bracket mounting screw LOCK WASHERS, set of 8.
    $ 6.95



    HCP321 Aftermarket Hitachi carb lower rack bracket mounting screw LOCK WASHER, black oxide coated alloy steel. Use with the HCP320 screws listed above. Each.
    $ 1.50

    HCP321SET8 Aftermarket Hitachi carb lower rack bracket mounting screw LOCK WASHERS, set of 8.
    $ 6.95




    HITACHI CARB FLOAT BOWL HARDWARE:

    fff) OEM Hitachi carb BOWL-TO-BODY MOUNTING SCREW, stock. Does not come with the lock washer, which has to be ordered below separately. NOTE: original screws had integral captured lock washers, the replacement ones do not. These replacement panhead, phillips-drive screws have a black-oxide finish, as opposed to the natural finish used originally. Use with the HCP59 lock washers listed below.

    HCP2940 OEM Hitachi carb bowl-to-body MOUNTING SCREW, panhead, phillips-drive, black oxide finish, each:
    $ 3.50

    HCP2940SET4 OEM Hitachi carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 13.95

    HCP2940SET16 OEM Hitachi carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 49.95



    m5) Aftermarket Hitachi carb BOWL-TO-BODY MOUNTING SCREW, stock style. Does not come with the lock washer, which has to be ordered below separately. NOTE: original screws had integral captured lock washers, the replacement ones do not.

    Replacement screws come in a variety of different finish and head drive styles, so please review the descriptions below carefully!


    These replacement panhead, phillips-drive screws have a natural finish as used originally. Use with the HCP913 lock washers listed further below:

    HCP2643 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREW, panhead, phillips-drive, natural finish, each:
    $ 1.50

    HCP2643SET4 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 5.25

    HCP2643SET16 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 14.95



    These replacement panhead, phillips-drive screws have a polished finish and are made from 18-8 stainless steel. Use with the HCP57 lock washers listed further below:

    HCP302 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREW, 18-8 stainless steel, panhead, phillips-drive, each:
    $ 1.50

    HCP302SET4 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 4.95

    HCP302SET16 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 12.95



    These replacement button-head screws have a polished finish, and are made from a 18-8 polished stainless steel. Use with the HCP57 lock washers listed further below:

    HCP303 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREW, button-head, hex-drive, 18-8 stainless steel, each:
    $ 1.95

    HCP303SET4 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 5.95

    HCP303SET16 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 14.95



    These replacement allen-head screws have a polished finish, as and are made from a 18-8 polished stainless steel. Use with the HCP57 lock washers listed further below:

    HCP56 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREW, socket head, hex-drive, 18-8 stainless steel, each:
    $ 1.95

    HCP56SET4 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 4.95

    HCP56SET16 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 13.95



    These replacement allen-head screws have a black-oxide finish, and are made from alloy steel material. Use with the HCP59 lock washers listed further below:

    HCP58 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREW, socket head, hex-drive, black oxide coated alloy steel, each:
    $ 1.50

    HCP58SET4 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 4.95

    HCP58SET16 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 9.95



    These replacement phillips-head screws have a golden chromate finish, as opposed to the natural finish used originally, and come with the integral captured lockwasher as original:

    HCP1358 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREW with lockwasher, panhead, phillips-drive, gold chromate finish, each:
    $ 1.95

    HCP1358SET4 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREWS with lockwasher, set of 4:
    $ 6.95

    HCP1358SET16 Aftermarket Hitachi carb bowl-to-body MOUNTING SCREWS with lockwasher, set of 16:
    $ 19.95




    ggg) Replacement Hitachi carb Bowl-to-Body Mounting Screw LOCK WASHERS, available in a variety of finishes to match the above screws,

    These replacement lock washers have a black-oxide finish. Use with the HCP2940 or the HCP58 screws listed above:

    HCP59 Aftermarket Hitachi carb bowl-to-body black oxide LOCK WASHER, each:
    $ 1.00

    HCP59SET4 Aftermarket Hitachi carb bowl-to-body black oxide LOCK WASHERS, set of 4:
    $ 2.95

    HCP59SET16 Aftermarket Hitachi carb bowl-to-body black oxide LOCK WASHERS, set of 16:
    $ 6.95



    These replacement lock washers have a natural finish as used originally. Use with the HCP2643 screws listed above:

    HCP913 Aftermarket Hitachi carb bowl-to-body natural finish LOCK WASHER, each:
    $ 1.00

    HCP913SET4 Aftermarket Hitachi carb bowl-to-body natural finish LOCK WASHERS, set of 4:
    $ 3.75

    HCP913SET16 Aftermarket Hitachi carb bowl-to-body natural finish LOCK WASHERS, set of 16:
    $ 5.50



    These replacement lock washers are made from an 18-8 stainless steel material for durability. Use with the HCP56, HCP302, or HCP303 screws listed above:

    HCP57 Aftermarket Hitachi carb bowl-to-body stainless LOCK WASHER, each:
    $ 1.00

    HCP57SET4 Aftermarket Hitachi carb bowl-to-body stainless LOCK WASHERS, set of 4:
    $ 3.25

    HCP57SET16 Aftermarket Hitachi carb bowl-to-body stainless LOCK WASHERS, set of 16:
    $ 7.95




    HITACHI CARB FLOAT BOWL DRAIN SCREW:

    e5) OEM and aftermarket Hitachi carb BOWL DRAIN SCREW. Available in a variety of versions, these taper-point screws will exactly replace the mangled or damaged original screws. Use 1 per bowl on all Hitachi-equipped models: all XJ650 (except Turbo), all XJ700 air-cooled models, and all XJ750 air-cooled models. These drain screws will also fit all 1984-86 Virago XV700, 1981-83 Virago XV750, 1981-83 Virago XV920, and 1984-87 Virago XV1000 models.

    And if the threaded port in the float bowl where the drain screw fits been injured, or if you want to restore the threads to their like-new condition, this thread chaser tap is what you'll need:


    HCP2399 Aftermarket THREAD CHASER AND CLEAN-UP TAP, made from a high-speed titanium nitride coated steel. For the following threaded holes listed below, as well as many other areas of the bike. This 6 x 1.00 pitch is a very common sized thread.
    $ 9.95

    - Hitachi HSC32 air compensator jet holes.
    - Hitachi lower carb rack mount screw holes.
    - Hitachi pilot and main air jets port holes (in carb throat, below vacuum piston).
    - Hitachi carb bowl drain screw hole.
    - All models: gas tank mounting holes for the petcock.
    - All models: gas tank fuel sending unit mounting holes.
    - Mikuni XJ550, XJ700-X, XJ750-X, and XJ1100 lower carb rack bracket screw holes.
    - All XJ550 - XJ900 models cylinder head exhaust port stud holes.
    - All XJ550 - XJ1100 models cylinder head valvecover mounting bolt holes.
    - All XJ550 - XJ1100 and XS1100 models cylinder head cam bearing cap bolt holes.
    - All XJ550 - XJ1100 and XS1100 models cylinder head intake manifold bolt holes.
    - All XJ550 - XJ1100 and XS1100 models cylinder head valvecover mounting bolt holes.
    - All XJ550 - XJ1100 and XS1100 models engine side covers mounting bolt holes.
    - All XJ550 - XJ1100 and XS1100 models engine oil pan mounting bolt holes.
    - All XJ550 - XJ1100 and XS1100 models engine upper-to-lower crankcase cinch bolt holes (note: some of the mounting holes are different size, and require the use of the larger HCP11028 tap below).
    - XJ700-X and XJ750-X cylinder heads and jugs coolant jacket bolt holes.
    - Some models: cylinder head cam chain tunnel-to-cylinder jugs cinching studs, for engines that have 2 studs on both the front and rear of the tunnel (models with a single tunnel stud use the HCP11028 tap listed further below).
    - Most models: upper crankcase to cylinder jugs stud.
    - All models: cam chain tensioner mounting bolt holes.
    - Some models: mechanical tachometer drive housing mounting hole.
    - exhaust headpipe gas test bolt threaded hole in the bottom of each header pipe.
    - exhaust collector input (from header pipe) pinch clamp.
    - collector chrome cover retaining bolt hole (XJ1100 models)
    - collector chrome cover rear retaining screw hole (XJ1100 models).
    - XJ650 Turbo models, turbo housing hole for the right muffler “joiner pipe” mounting bolt holes.

    NOTE: most of these threaded holes need chasing, including the carb bowl drain screw holes, especially if the drain screw was "frozen"; and the gas tank petcock and sending unit mounting holes, which almost always needs cleaning or re-tapping (be careful about this when buying a used gas tank!).




    HCP28170 Aftermarket thread tap or EZ-out extractor TAP HANDLE, featuring offset tap handles and fully adjustable head for all m3-m12 size taps and size 0 to ½” extractors. This is the proper way to hold a tap or extractor to insure that the force is directed straight down and doesn’t “wobble” as you are cutting, reaming, or extracting. Much better than using pliers or vise-grips to hold the tool……..
    $ 17.95


    NOTE: it is recommended that anti-seize compound be used on the screw threads when fitting screws back into the carb bowl passage.


    HCP864 OEM Hitachi carb BOWL DRAIN SCREW, panhead, phillips-drive, cad-plated alloy-steel each:
    $ 21.95

    HCP864SET4 OEM Hitachi carb BOWL DRAIN SCREWS, set of 4:
    $ 79.95



    HCP3113 Aftermarket Hitachi carb BOWL DRAIN SCREW, panhead, phillips-drive, zinc-plated alloy steel each:
    $ discontinued

    HCP3113SET4 Aftermarket Hitachi carb BOWL DRAIN SCREWS, set of 4:
    $ discontinued



    HCP3112 Aftermarket Hitachi carb BOWL DRAIN SCREW, panhead, phillips-drive, 18-8 stainless-steel, each:
    $ discontinued

    HCP3112SET4 Aftermarket Hitachi carb BOWL DRAIN SCREWS, set of 4:
    $ discontinued


    HCP15785 Aftermarket Hitachi carb BOWL DRAIN SCREW, cheesehead, straight-slot, brass, each:
    $ 8.95

    HCP15785SET4 Aftermarket Hitachi carb BOWL DRAIN SCREWS, set of 4:
    $ 29.95



    g5) Aftermarket Hitachi carb BOWL DRAIN SCREW. Bright finish 18-8 stainless steel hex-drive, socket head, taper-point screw fits into the drain hole passage of each carb bowl. Works better than the original Yamaha screw; not only is it made of stainless steel, but the larger socket-head design allows for more torque to be applied to the screw, forever ending the stripped/stuck/ruined drain screw problem that has plagued Yamaha owners forever!

    Note that by their design, the large socket head portion of this drain screw will be located OUTSIDE of the drain screw bore hole in the bowl, and sticks out about 1/4" from the bowl body. This additional length does not cause any problems, and after looking at them (installed) on the carb bowls, at first glance they might look "odd" the way the stick out, but after the third or fourth look, they appear normal and oddly interesting with that extended length.

    NOTE: do NOT "bottom" the heads of these screws against the bowl! Tighten them to 4-5 foot-pounds of torque, just enough to seat them snugly. That is all that is necessary to prevent fuel leakage from the drain port.

    Fits all XJ650 (except Turbo) models, all XJ700 non-X, and all XJ750 models using the Hitachi HSC32 or HSC33 series carbs, as well as all Hitachi HSC40 series carbs used on various XV700, XV750, XV920, and XV1000 Virago models.


    HCP8878 Aftermarket Hitachi socket-head, hex-drive, stainless-steel carb BOWL DRAIN SCREW, each:
    $ 9.95

    HCP8878SET4 Aftermarket Hitachi carb BOWL DRAIN SCREWS, set of 4:
    $ 34.95



    NOTE: good used carb bodies and bowls are also available, please inquire.
     
    Last edited: Sep 19, 2021
  7. chacal

    chacal Moderator Moderator Supporting Vendor Premium Member

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    SECTION C:

    FUEL SYSTEM ITEMS: Including Airbox, Carbs, Intakes, Fuel Tanks, Sending Units, Petcocks, Gas Caps, Tank Mounts, Etc.

    --Mikuni Parts


    MIKUNI CARB REBUILD PARTS:

    NOTE: Mikuni carbs were originally used on all Yamaha XJ550 models (BS28 series carbs), all 1992-98 XJ600 Seca II models (BDS26 series in the USA, and BDST28 series in the rest-of-the-world), all 1984-85 FJ600 models (BS32 series carbs), all XJ650 Turbo models (BS30 series carbs), all XJ700-X and XJ750-X models (BS33 series carbs), XJ900RK and RL model (BS35 series carbs), all XJ900 N/FN and F models (BS36 series carbs), and all XJ1100 and XS1100 models (both used BS34 series carbs, but there are vast differences between the XJ1100 and many of the XS1100 model carbs). All other XJ models from this era (XJ650 non-Turbo models, XJ700 non-"X" models, and all XJ750 non-X models) used Hitachi carbs.

    The "series" number of the carbs refers to the internal diameter of the carb throat (the area where the butterfly valves are) and is expressed in the closest millimeter measurement. Thus the BS28 series carbs have a 28mm ID throat, and the BS33 series carbs have a 33mm ID throat, etc.

    Original carb bodies are typically marked with an ink stamping that identifies the intended use of the carbs......for example, the 1983 XJ900RK carbs (US models) would have an ink stamping that reads "35H00", while the XJ700XNC carbs would be inked as "1FL00", etc. This ink stamp could have been on the carb bodies, or on the sides or bottom of the bowls......and, after 20+ years and a number of carb cleaning efforts, are probably long gone.

    Different series of Mikuni carbs are quite difficult to properly identify from one another, and Mikuni carbs were also used on other manufacturer model bikes, and while even the same "series" of Mikuni carbs may have been used on, say, a certain Kawasaki model bike, the internal jetting, valving, and other design elements (choke actuation method, etc.) typically renders such carbs as "similar but different enough" to not be directly (or even indirectly!) interchangeable with the proper Yamaha version carbs for a particular model.

    NOTE: "OEM" refers to an original Yamaha factory part, whereas "Replacement" or "Aftermarket" refers to a part not made by Yamaha or one of their original suppliers. Note that an OEM" part may be made by Yamaha's original supplier, even though such part is no longer serviced through the Yamaha factory parts system.


    - MIKUNI CARB REBUILDING INFORMATION GUIDES:

    http://xjbikes.com/forums/index.php?threads/3633

    and

    http://xjbikes.com/forums/index.php?threads/3690

    and

    http://www.xj4ever.com/mikuni carb cleaning.pdf

    and

    https://thexscafedotcom.files.wordpress.com/2014/06/mikuni_bs-cv_carburetor_rebuild_tutorial.pdf

    Note that the above link shows the rebuild for the BS28 series of Mikuni carbs (same as on XJ550 models) that are off a Suzuki, and while some minor differences exist ( i.e the choke plunger system and the locknuts on the synch screws), 99% of the information (and pictures) will crossover to the XJ550 model carbs.

    and

    http://xjbikes.com/forums/index.php?threads/31061

    NOTE: the above link shows the exploded view of the BS28/BS30 series of Mikuni carbs (used on XJ550 and XJ650 Turbo models);, the BS33-and-larger series move the pilot air jet from under the vac piston diaphram to the carb throat.........and have the choke plunger coming out of the side of the carb body rather than the top.




    MIKUNI CARB UPPER END PARTS:

    NOT: fuel jets, air jets, float valves, and main jet needles are located in the section "LOWER END PARTS" further below.



    MIKUNI THROTTLE SHAFT REBUILD PARTS:

    Mikuni Throttle Shaft Seals:

    aaa) OEM and aftermarket Mikuni carb THROTTLE SHAFT SEALS...these are the seals on the outside of the carb body that the throttle shaft passes through. Uses 2 per carb, but without taking the carbs apart from their rack, the only ones you can replace are the outermost seals on the end carbs.

    The aluminum-bodied carbs, when heated by conduction from the engine, tend to expand more quickly and by a greater amount than the air-cooled steel throttle shafts.

    Thus as these shaft seals wear and harden, they can't always maintain a vacuum-tight seal in all conditions, resulting in a lean running condition once the engine is warmed up----even though they "seal" perfectly well at idle, or when the carb bodies are still cool. If the pilot screws are adjusted with the bike partially warmed up, it may appear to be richer than necessary when cool, and then running lean when hot, resulting in an incredibly confusing and frustrating situation to diagnose and remedy.

    Used on all XJ400, XJ550, 1984-85 FJ600, 1986-90 YX600 Radian, 1992-98 XJ600 Seca II, XJ650 Turbo, XJ700-X, XJ750-X, all XJ900RK, RL, N/FN, and F models, XJ1100, 1978-81 XS1100 models, 1984-85 FJ1100, 1986-93 FJ1200, as well as 1983-85 XVZ12, 1986-90 XVZ13, 1985-86 and 1989-2007 VMX12 V-Max models, 1988-90 XV250 Virago Route 66, 1995-20 XV250 Virago / V-Star, 1984-85 RZ350, 1970-71 XS1, 1972-73 XS2 / TX650, 1973-75 TX650, 1973-74 TX750, 1978-79 XS400, 1976-78 XS500, 1975-77 XS650, 1977-79 XS750, 1988-90 FZR400, 1989-99 FZR600, 1992-07 XT225, 1980-83 XT250, 1991 and 1999 TT225, 1999-04 TTR225, and 1980-82 TT250 models, as well as any other models of this era that used a throttle shaft with a 7.97mm OD.


    These V-shaped seals are installed with their open “face” facing away from the carb throat. The OEM seals (HCP6838B) have one open face and one closed face, while the aftermarket HCP38B seals are like the original-installed seals, and have an “open” face on both sides (and thus for the HCP38B aftermarket seals, it does not matter in which direction they are installed!).

    An excellent write-up on the process required to take the carbs apart fully and replace these seals can be reviewed at:

    ]http://www.xj4ever.com/hitachi throttle shaft seals.pdf

    Note that although the above guide is in regards to Hitachi carbs, the shaft seal replacement tasks and procedures are basically identical between both the Hitachi and Mikuni carbs.


    HCP23265 OEM Mikuni throttle shaft SEAL, used on all of the following models only: 1978-79 XS1100, 1978-79 XS400, 1978 XS500, 1977-79 XS750, 1992-07 XT225, 1980-83 XT250, 1991 and 1999 TT225, 1999-2004 TTR225, and 1980-82 TT250 models. Each:
    $ 10.95

    HCP23265ET2 OEM Mikuni throttle shaft SEALS, pair:
    $ 20.95

    HCP23265ET4 OEM Mikuni throttle shaft SEALS, set of 4:
    $ 40.95

    HCP23265ET6 OEM Mikuni throttle shaft SEALS, set of 6:
    $ 60.95

    HCP23265SET8 OEM Mikuni throttle shaft SEALS, set of 8:
    $ 79.95




    HCP6838B OEM Mikuni throttle shaft SEAL, used on all XJ400, XJ550, 1984-85 FJ600, 1986-90 YX600 Radian, 1992-98 XJ600 Seca II, XJ650 Turbo, XJ700-X, XJ750-X, all XJ900RK, RL, N/FN, and F models, XJ1100, 1980-81 XS1100 models, 1984-85 FJ1100, and 1986-93 FJ1200 models, as well as 1983-85 XVZ12, 1986-90 XVZ13, 1985-86 and 1989-2007 VMX12 V-Max models, 1988-90 XV250 Virago Route 66, 1995-20 XV250 Virago / V-Star, 1984-85 RZ350, 1970-71 XS1, 1972-73 XS2 / TX650, 1973-75 TX650, 1973-74 TX750, 1975-77 XS650, 1988-90 FZR400, 1989-99 FZR600, models, as well as any other models of this era that used a throttle shaft with a 7.97mm OD. Each:
    $ 7.95

    HCP6838BSET2 OEM Mikuni throttle shaft SEALS, pair:
    $ 14.95

    HCP6838BSET4 OEM Mikuni throttle shaft SEALS, set of 4:
    $ 27.95

    HCP6838BSET6 OEM Mikuni throttle shaft SEALS, set of 6:
    $ 41.95

    HCP6838BSET8 OEM Mikuni throttle shaft SEALS, set of 8:
    $ 54.95




    HCP38B Aftermarket Mikuni throttle shaft SEAL, used on all XJ400, XJ550, 1984-85 FJ600, 1986-90 YX600 Radian, 1992-98 XJ600 Seca II, XJ650 Turbo, XJ700-X, XJ750-X, all XJ900RK, RL, N/FN, and F models, XJ1100, 1980-81 XS1100 models, 1984-85 FJ1100, and 1986-93 FJ1200 models, as well as 1983-85 XVZ12, 1986-90 XVZ13, 1985-86 and 1989-2007 VMX12 V-Max models, 1988-90 XV250 Virago Route 66, 1995-20 XV250 Virago / V-Star, 1984-85 RZ350, 1970-71 XS1, 1972-73 XS2 / TX650, 1973-75 TX650, 1973-74 TX750, 1975-77 XS650, 1988-90 FZR400, 1989-99 FZR600, models, as well as any other models of this era that used a throttle shaft with a 7.97mm OD. Each:
    $ 5.95

    HCP38BSET2 Aftermarket Mikuni throttle shaft SEALS, pair:
    $ 10.95

    HCP38BSET4 Aftermarket Mikuni throttle shaft SEALS, set of 4:
    $ 21.95

    HCP38BSET6 Aftermarket Mikuni throttle shaft SEALS, set of 6:
    $ 31.95

    HCP38BSET8 Aftermarket Mikuni throttle shaft SEALS, set of 8:
    $ 42.95


    We recommend the use of silicone grease when installing any of these seals:

    HCP28407 Aftermarket o-ring, oil seal, and gasket installation pure SILICONE GREASE. This small 5-gram (1/6-oz) snap-open "pillow packet" is enough for a few small oil seals, dozens of o-rings, and the like. Each:
    $ 4.95

    HCP1714 Aftermarket o-ring, oil seal, and gasket installation pure SILICONE GREASE. This generous 14-gram (1/2-oz.) tub goes a long way, because just like Brylcreem, "just a little dab will do ya'!" Each:
    $ 9.95



    NOTE: the following product(s) can only be shipped via ground transport (which thus eliminates the postal Priority Mail, postal Express Mail, or private carrier Expedited levels of service for this item) and cannot (and will not----don't even ask!) be shipped outside of the continental USA. Additionally, there may be a per-package weight or quantity restriction, and thus multiple-unit orders of this product may have to be shipped in separate packages and will incur additional shipping charges.

    HCP20861 Aftermarket industrial-strength SILICONE LUBE, in a large 16-ounce aerosol can. Concentrated silicone sprays on wet, and then dries to a super-slick, clear, non-greasy, non-staining finish. Resists moisture, stops squeeks, prevents binding on all types of surfaces (wood, metal, plastic, rubber, even fabrics). Won't wash away, protect against rust and corrosion, stable from -100 degrees up to 500-F. This fluid is also a great choice for use as installation lubricant for o-rings, oil seals, etc. (similar to our HCP1714 or HCP28407 silicone grease paste) or wherever petroleum-based lubricants are not recommended.
    $ 24.95




    bbb) OEM and aftermarket Mikuni carb THROTTLE SHAFT SEAL PLASTIC SHIM WASHER ... these washers go directly "outside" of the HCP6838B or the HCP38B throttle shaft seals listed above. Same notes as listed above about the seals (regarding the ease of replacement) also applies to these shims. NOTE: although these shims do not typically "wear out" like the seals do, you should replace them if they appear cracked, brittle, or are missing. Used on all XJ400, XJ550, 1984-85 FJ600, 1992-98 XJ600 Seca II, XJ650 Turbo, XJ700-X, XJ750-X, all XJ900RK, RL, N/FN, and F models, XJ1100, and XS1100 models, as well as 1983-85 XVZ12, 1986-90 XVZ13, and 1985-86 and 1989-2007 VMX12 V-Max models. Use 1 shim per throttle, on the side opposite the shaft return springs only.

    HCP6837 OEM Mikuni throttle shaft seal SHIM WASHER, single:
    $ 6.95

    HCP6837SET4 OEM Mikuni throttle shaft seal SHIM WASHERS, four shims:
    $ 24.95



    HCP39C Aftermarket Mikuni throttle shaft seal SHIM WASHER, single:
    $ 4.95

    HCP39CSET4 Aftermarket Mikuni throttle shaft seal SHIM WASHERS, four shims:
    $ 17.95


    COMMENTARY: These seals are a VERY common source of vacuum leaks into the carbs, making tuning (synch, colortune, etc.) somewhere between very difficult and next-to-impossible. And here's the dirty little secret that no one really talks about:

    If you read through these boards often and enough---or any other websites or lists devoted to these XJ bikes----you'll find a common theme in regards to these bikes, and it goes something like this:

    "My bike doesn't run right."

    And 9 times out of 10, it's due to a carb problem. And to make matters worse, these bikes don't just use one carb, they use four, which means that the synchronization of the four carbs to each other is critical in order for them to perform properly.

    And 95% of the problems with the carbs is this: they are dirty (more like filthy!) inside due to age, and these seals are worn out. But to replace these seals (and also to properly get the insides of the carbs absolutely, positively, ZESTFULLY clean), you're gonna have to pull the carb rack apart. Although that task is not mechanically difficult....nor does it take any special tools to do it.....the re-assembly process will MERCILESSLY PUNISH the careless or impatient mechanic or hobbyist. A tremendous attention to detail and organization is needed before you begin to take these carbs apart, so that you will have all the proper notes, drawings, sketches, etc. to put humpty-dumpty back together again, properly.

    Since most people lack those skills or discipline, you will find most of the experienced experts on the various boards and forums telling you to NOT take the carbs apart, and to forego the proper cleaning and parts replacement steps needed.

    I'm not trying to tell you to do, or not to do the task properly yourself; all I can tell you is what my own personal experience is. If you have the proper tools, time, and organizational skills and the PATIENCE to do the job right, breaking a rack apart and doing the job properly isn't that difficult. If you don't, it's a nightmare.

    And the other dirty little secret is this: before you can synch and tune your carbs properly, you MUST check and adjust your valve clearances (replace worn valve shims), or all the synching and colortuning in the world isn't going to give you optimal results.

    Sorry to be the bearer of such bad news, but as always, the truth will set you free (or at least solve most of your tuning and performance issues!).

    Luckily, all of the parts and special tools needed to perform a proper tune up ARE available. I guess we should appreciate the little things in life more than we usually do........


    We also strongly recommend the purchase of a new set of throttle shaft butterfly retaining screws, as it is very common to strip the heads out of the original screws while removing them. Replacement screws are listed further below.

    Also, you may find it next-to-impossible to properly remove the original screws without using the proper JIS-style screwdriver. Typical "phillips-drive" style screwdrivers do not have the proper tip design to engage the slots on JIS-specifications screws (which all screws on Japanese bikes are) and tend to very easily strip out the screw heads. We offer complete sets of various sized JIS screwdrivers, but those people wanting only the correct size screwdriver for these throttle shaft screws should order the HCP5901 (size #2) screwdriver:


    JIS Screwdrivers:

    mt1) Almost every screw on these bikes are "JIS" design screws, JIS standing for Japanese Industrial Standards, and both the depth and design on the phillips-head "slot" is different than typical US slots. In a nutshell, JIS screws (which can be easily identified by the small punched single "dot" on the screw head, in-between two of the screw slots) have both deeper and "squarer" slots and thus can hold more torque than their rest-of-the-world counterparts. They also require a JIS screwdriver to take full advantage of, and to prevent rounding out the slots as typical phillips screwdrivers will do. The more "rounded" edges of a standard phillips-drive screwdriver cannot exert as much torque on the screw head (by design, actually) and will "cam-out" of the slots, taking some of the slot material with it.....and then you have what is affectionately known as a !!#&$!?**#! stripped out screw head!

    So it might be a good idea to also invest in a set of quality JIS screwdrivers; trust me, they make a difference (and yes, they can be used on standard phillips-drive screws, too).

    We offer these tools in three different quality grades and styles to meet your particular needs:

    * Standard-Grade screwdrivers are a low-cost alternative that do a fine job in light-duty use.
    * Mechanics-grade screwdrivers are a heavy-duty design and is recommended for the typical home mechanic or shop.
    * Impact-grade screwdrivers feature a hardened “head” and an internal cam-drive that rotates the shaft about 12-degrees when struck by a hammer -----similar to the operation of an impact driver, but in a much more useful form. These drivers look, feel, and operate just like a mechanic-grade screwdriver above, but can also be given a sturdy “whack!” to help persuade frozen fasteners to give up their grip. Highly recommended when working on the carbs (the upper and lower rack bracket screws are a beast to remove without an impact driver ) or in any number of other situations when working on seized or rusted fasteners.


    Basic JIS Screwdriver Sets:

    HCP21127 Aftermarket JIS-standards STANDARD-GRADE SCREWDRIVER SET. This set of 3 drivers contains one each of standard-length #1, #2, and #3 size phillips-drive, JIS-standard screwdrivers, and this range of sizes will handle everything down to an M2 sized screw (that's tiny, smaller than the size of the petcock faceplate mounting screws) all the way up to the biggest screws commonly used on these bikes. These standard-grade screwdrivers all feature a comfortable gel-covered handle, black-chrome plated steel shafts, and magnetized drive tips.
    $ 42.95

    HCP17479 Aftermarket JIS-standards MECHANICS-GRADE SCREWDRIVER SET. This set of 3 drivers contains one each of standard-length #1, #2, and #3 size phillips-drive, JIS-standard screwdrivers, and this range of sizes will handle everything down to an M2 sized screw (that's tiny, smaller than the size of the petcock faceplate mounting screws) all the way up to the biggest screws commonly used on these bikes. These mechanics-grade screwdrivers all feature sturdy comfort-grip handles, chrome plated steel shafts, and magnetized drive tips.
    $ 49.95

    HCP23604 Aftermarket JIS-standards MECHANICS-GRADE SCREWDRIVER BITS SET. This set of 4 driver bits contains one each of 1/4” hex-drive bits in the #0, #1, #2, and #3 size phillips-drive, JIS-standard screwdriver bits, and this range of sizes will handle everything down to an M1 sized screw (that's tiny, smaller than the size of the petcock faceplate mounting screws) all the way up to the biggest screws commonly used on these bikes. These mechanics-grade screwdriver bits are approximately 1” long and are designed to be used in a 1/4” bit holder or similar..
    $ 17.95



    Carb Rebuild Screwdriver Sets:

    HCP21183SET Aftermarket JIS-standard MECHANICS-GRADE SCREWDRIVER SET. This set of 3 drivers contains one each of the standard-length #2 and #3 size phillips-drive, JIS-standard screwdrivers, and a stubby straight-blade screwdriver that properly fits the pilot mixture screw slot. This range of sizes will handle everything down to an M3 sized screw all the way up to the largest screws found on the carbs. These mechanics-grade screwdrivers all feature sturdy comfort-grip handles, chrome plated steel shafts, and magnetized drive tips.
    $ 54.95

    HCP21184SET Aftermarket JIS-standard IMPACT-GRADE SCREWDRIVER SET. This set of 3 drivers contains one each of the standard-length #2 and #3 size phillips-drive, JIS-standard impact screwdrivers, and a stubby straight-blade screwdriver that properly fits the pilot mixture screw slot. This range of sizes will handle everything down to an M3 sized screw all the way up to the largest screws found on the carbs. These mechanics-grade screwdrivers all feature sturdy comfort-grip handles, knurled chrome plated steel shafts, and “sure-grip” textured, magnetized drive tips. The inclusion of the impact drivers can make the breakdown of the carb rack much easier.
    $ 74.95


    Fuel System Service Screwdriver Sets:

    These sets are the same as the Carb Rebuild Sets above, but also include the #1 sized phillips-drive JIS-tip screwdriver that will be useful when servicing the petcock.

    HCP21185SET Aftermarket JIS-standards MECHANICS-GRADE SCREWDRIVER SET. This set of 4 drivers contains one each of the standard-length #1, #2, and #3 size phillips-drive, JIS-standard screwdrivers, and a stubby straight-blade screwdriver that properly fits the pilot mixture screw slot. This range of sizes will handle everything down to an M3 sized screw all the way up to the largest screws found on the carbs. These mechanics-grade screwdrivers all feature sturdy comfort-grip handles, chrome plated steel shafts, and magnetized drive tips.
    $ 64.95

    HCP21186SET Aftermarket JIS-standards IMPACT-GRADE SCREWDRIVER SET. This set of 4 drivers contains the standard-length #1 phillips-drive, JIS-standard screwdriver, one each of the #2, and #3 size phillips-drive JIS-tip impact screwdrivers, and a stubby straight-blade screwdriver that properly fits the pilot mixture screw slot. This range of sizes will handle everything down to an M3 sized screw all the way up to the largest screws found on the carbs. These mechanics-grade screwdrivers all feature sturdy comfort-grip handles, knurled chrome plated steel shafts, and “sure-grip” textured, magnetized drive tips. The inclusion of the impact drivers can make the breakdown of the carb rack much easier.
    $ 84.95


    Full Service Screwdriver Sets:

    HCP21187SET Aftermarket JIS-standards MECHANICS-GRADE SCREWDRIVER SET. This set of 6 drivers contains a set of standard-length of the #1, #2, and #3 size phillips-drive, JIS-standard screwdrivers, one each of the stubby #1 and #2 size phillips-drive JIS-tip screwdrivers, and a stubby straight-blade screwdriver that properly fits the pilot mixture screw slot. This range of sizes will handle everything down to an M3 sized screw all the way up to the largest screws found on the carbs. These mechanics-grade screwdrivers all feature sturdy comfort-grip handles, chrome plated steel shafts, and magnetized drive tips.
    $ 99.95

    HCP21188SET Aftermarket JIS-standards IMPACT-GRADE SCREWDRIVER SET. This set of 6 drivers contains a standard-length #1 JIS-tip screwdriver, one each of the #2 and #3 size phillips-drive, JIS-standard impact drivers, one each of the stubby #1 and #2 size phillips-drive, JIS-standard screwdrivers, and a stubby straight-blade screwdriver that properly fits the pilot mixture screw slot. This range of sizes will handle everything down to an M3 sized screw all the way up to the largest screws found on the carbs. These mechanics-grade screwdrivers all feature sturdy comfort-grip handles, knurled chrome plated steel shafts, and “sure-grip” textured, magnetized drive tips. The inclusion of the impact drivers makes the removal of stuck or seized fasteners much easier and more convenient. With this set you can rule the world in style!
    $ 119.95



    Individual JIS-standards Screwdrivers:

    The #2 and #3 size phillips-drive screwdrivers fit the most commonly used size screws on the carbs, gauge clusters, etc.

    HCP21181 Aftermarket straight-blade STUBBY SCREWDRIVER, short 1” shaft length, modified to properly fit the pilot mixture screw slotted head.
    $ 19.95

    HCP21130 Aftermarket size #1 JIS-standards STUBBY SCREWDRIVER, for m2-m4 sized screws, short 1” shaft length.
    $ 18.95

    HCP21131 Aftermarket size #2 JIS-standards STUBBY SCREWDRIVER, for m3-m5 sized screws, short 1” shaft length.
    $ 19.95



    HCP5900 Aftermarket size #1 JIS-standards SCREWDRIVER, for m2-m4 sized screws, standard 3” shaft length.
    $ 14.95

    HCP5901 Aftermarket size #2 JIS-standards SCREWDRIVER, for m3-m5 sized screws, standard 4” shaft length.
    $ 17.95

    HCP5902 Aftermarket size #3 JIS-standards SCREWDRIVER, for m6-m8 sized screws, standard 6” shaft length.
    $ 21.95

    HCP5903 Aftermarket size #4 JIS-standards SCREWDRIVER, for m8-up sized screws, standard 8” shaft length.
    $ 24.95



    HCP21135 Aftermarket size #2 JIS-standards IMPACT SCREWDRIVER, for m3-m5 sized screws, standard 4” shaft length.
    $ 27.95

    HCP21136 Aftermarket size #3 JIS-standards IMPACT SCREWDRIVER, for m6-m8 sized screws, standard 6” shaft length.
    $ 29.95



    HCP23600 Aftermarket size #0 JIS-standards SHORT SCREWDRIVER BIT , for m2 and smaller size screws. This 1” long bit fits in any standard 1/4” bit holder.
    $ 4.95

    HCP23601 Aftermarket size #1 JIS-standards SHORT SCREWDRIVER BIT , for m2-m4 size screws. This 1” long bit fits in any standard 1/4” bit holder.
    $ 4.95


    HCP23602 Aftermarket size #2 JIS-standards SHORT SCREWDRIVER BIT , for m3-m5 size screws. This 1” long bit fits in any standard 1/4” bit holder.
    $ 4.95

    HCP28218 Aftermarket size #2 JIS-standards LONG SCREWDRIVER BIT , for m3-m5 size screws. This 3” long bit fits in any standard 1/4” bit holder.
    $ 6.95


    HCP23603 Aftermarket size #3 JIS-standards SHORT SCREWDRIVER BIT, for m6-m8 size screws. This 1” long bit fits in any standard 1/4” bit holder.
    $ 4.95

    HCP28220 Aftermarket size #3 JIS-standards LONG SCREWDRIVER BIT, for m6-m8 size screws. This 3” long bit fits in any standard 1/4” bit holder.
    $ 6.95



    HCP28224 Aftermarket JIS-standards SHORT SCREWDRIVER BITS SET, contains one each of the #0, #1, #2, and #3 size short (1” long) bits.
    $ 17.95

    HCP28225 Aftermarket JIS-standards LONG SCREWDRIVER BITS SET, contains one each of the #2 and #3 size (3” long) bits.
    $ 12.95

    HCP28226 Aftermarket JIS-standards COMPLETE SCREWDRIVER BITS SET, contains a complete set of short and long bits: one each of the #0, #1, #2, and #3 short bits, and one each of the #2 and #3 size long bits.
    $ 27.95




    Mikuni Throttle Shaft Hardware:

    ts5) Aftermarket Mikuni throttle shaft BUTTERFLY VALVE MOUNTING SCREW. Each round butterfly "valve" is held to the steel throttle shaft via two tiny phillips head screws. The throttle shaft has self-locking threads which makes the removal of these screws an absolute chore and usually results in a buggered phillips head slot. These replacement screws come in a variety of materials and drive styles. Use 2 per carb, 8 per entire carb rack. Used on all XJ400, XJ550, 1984-85 FJ600, 1992-98 XJ600 Seca II, XJ650 Turbo, XJ700-X, XJ750-X, all XJ900RK, RL, N/FN, and F models, XJ1100, XS1100 models, 1984-85 FJ1100, and 1986-93 FJ1200, as well as 1983-85 XVZ12, 1986-90 XVZ13, and 1985-86 and 1989-2007 VMX12 V-Max models.

    NOTE: these screws are an absolute BEAST to remove, and it is very easy to destroy the screw heads as well as the throttle shaft threads while trying to remove them---if proper precautions are not taken. You will want to review the information in this forum thread before attempting removal:

    http://xjbikes.com/forums/index.php?threads/8011

    and

    http://xjbikes.com/forums/index.php?threads/17628

    For all of the above reasons, our recommendation is to use the allen-head (hex drive) style screws (HCP7120 or HCP7346 below) to make future removal easier. These allen head screws are a bit longer (2mm) than the stock screws, so you may want to use a fine-tooth saw blade or equivalent to remove the extra length after they have been installed (although the extra length will not affect performance). ALSO, since it is not really feasible to peen or stake the screws once installed (as Mikuni originally did---they must have had a special fixture to perform this task), it is strongly recommended that you use some type of semi-permanent thread-locking fluid (such as our HCP1266 or HCP1267 thread locker fluids) when installing these screws.....as the last thing you want to have happen is having these screws back out during engine operation.....as that would be a sad, sad day for you and your engine!

    And if you’re so unfortunate to have buggered the threads on the shaft, you might be able to rescue the threads on the throttle shafts by re-tapping the holes with this tap:

    HCP6336 THREAD CHASER AND CLEAN-UP TAP, made from a high-speed uncoated steel. For the following holes:
    - all Hitachi and Mikuni throttle shafts where the butterfly valve screw on
    - all models petcock faceplate mounting screw holes.
    $ 9.95

    HCP28170 Aftermarket thread tap or EZ-out extractor TAP HANDLE, featuring offset tap handles and fully adjustable head for all m3-m12 size taps and size 0 to ½” extractors. This is the proper way to hold a tap or extractor to insure that the force is directed straight down and doesn’t “wobble” as you are cutting, reaming, or extracting. Much better than using pliers or vise-grips to hold the tool……..
    $ 17.95



    If the threads are too damaged, then we offer these problem-solver kits that contain a longer screw and special ultra-thin nut:

    HCP26991SET Aftermarket Mikuni butterfly valve “problem-solver” MOUNTING SCREW & NUT SET, oval-head 18-8 stainless steel screw, phillips-drive. This longer-than-stock screw and matching thin nut allows you to salvage a throttle shaft which has damaged, stripped, or missing threads…..the longer reach of the threads clears the back side of the throttle shaft and allows the nut to secure the valve to the shaft. NOTE: the threads in the throttle shaft should be drilled out using our HCP26993 oversize drill bit, to remove any damaged threads and to slightly enlarge the hole, allowing the replacement screw to pass through the throttle shaft without engaging the shaft. NOTE: you must use thread-locking fluid HCP1266 when installing this fastener! Used on all XJ400, XJ550, 1984-85 FJ600, 1992-98 XJ600 Seca II, XJ650 Turbo, XJ700-X, XJ750-X, all XJ900RK, RL, N/FN, and F models, XJ1100, XS1100 models, 1984-85 FJ1100, and 1986-93 FJ1200 models, as well as 1983-85 XVZ12, 1986-90 XVZ13, and 1985-86 and 1989-2007 VMX12 V-Max models.. This set contain one screw and one nut, enough to repair one damaged hole. You will need to order 2 sets to repair both holes in a single throttle shaft.
    $ 2.95

    HCP26991SET8 Aftermarket Mikuni butterfly valve “problem-solver” MOUNTING SCREW & NUT SETS, oval-head 18-8 stainless steel screw, phillips-drive. Contains 8 screws and 8 nuts.
    $ 14.95

    HCP26993 Aftermarket throttle shaft screw OVERSIZE DRILL BIT allows you to remove damaged threads and slightly enlarge the screw hole in damaged throttle shafts so that our problem-solver screws can be used. 1/8” shank. For use with all Mikuni and Hitachi models.
    $ 9.95

    HCP1266 Low Strength THREAD LOCKER FLUID, 6ml squeeze tube. This is a semi-permanent formula that provides moderate vibration-loosening resistance, while still allowing for easy disassembly of the fastener with hand tools. This formula is recommended for upper and lower carb rack mount screws and the butterfly valve-to-throttle shaft retaining screws. A little bit goes a long way.......
    $ 11.95


    HCP26991KIT Aftermarket Mikuni butterfly valve “problem-solver” MOUNTING SCREW & NUT SETS, contains 8 of the HCP26991 screw and nut sets, a tube of the HCP1266 low-strength locker fluid, and the HCP26993 drill bit. This kit has enough parts to repair 8 damaged shaft holes..
    $ 24.95



    all of the following screws are for use on throttle shafts with undamaged threads :

    HCP5899 Aftermarket Mikuni butterfly valve MOUNTING SCREW, oval-head 18-8 stainless steel screw with a phillips-drive, each:
    $ 1.95

    HCP5899SET2 Aftermarket Mikuni butterfly valve MOUNTING SCREW, oval-head 18-8 stainless steel screw with a phillips-drive, set of 2:
    $ 2.95

    HCP5899SET4 Aftermarket Mikuni butterfly valve MOUNTING SCREW, oval-head 18-8 stainless steel screw with a phillips-drive, set of 4:
    $ 5.75

    HCP5899SET8 Aftermarket Mikuni butterfly valve MOUNTING SCREW, oval-head 18-8 stainless steel screw with a phillips-drive, set of 8:
    $ 8.95



    HCP7120 Aftermarket Mikuni butterfly valve MOUNTING SCREW, 18-8 stainless steel flat-head screw with a 2mm hex-drive, each:
    $ 1.95

    HCP7120SET2 Aftermarket Mikuni butterfly valve MOUNTING SCREW, 18-8 stainless steel flat-head screw with a 2mm hex-drive, set of 2:
    $ 2.95

    HCP7120SET4 Aftermarket Mikuni butterfly valve MOUNTING SCREW, 18-8 stainless steel flat-head screw with a 2mm hex-drive, set of 4:
    $ 5.75

    HCP7120SET8 Aftermarket Mikuni butterfly valve MOUNTING SCREW, 18-8 stainless steel flat-head screw with a 2mm hex-drive, set of 8:
    $ 8.95



    HCP7346 Aftermarket Mikuni butterfly valve MOUNTING SCREW, flat-head black-oxide coated alloy steel screw with a 2mm hex-drive, each:
    $ 1.95

    HCP7346SET2 Aftermarket Mikuni butterfly valve MOUNTING SCREW, flat-head black-oxide coated alloy steel screw with a 2mm hex-drive, set of 2:
    $ 2.95
    HCP7346SET4 Aftermarket Mikuni butterfly valve MOUNTING SCREW, flat-head black-oxide coated alloy steel screw with a 2mm hex-drive, set of 4:
    $ 5.75

    HCP7346SET8 Aftermarket Mikuni butterfly valve MOUNTING SCREW, flat-head black-oxide coated alloy steel screw with a 2mm hex-drive, set of 8:
    $ 8.95



    vv2) Aftermarket small parts NEEDLE FILES SET. This set of 12 miniature swiss files allows you to easily get into those tight spots with precise control. A variety of files----round, flat, triangle---all have easy-grip round knurled handles. Each file is approximately, 6" long. Works great for knocking the peening off the back of the original Mikuni throttle shaft screws before you attempt to remove them.

    HCP9802 Aftermarket small parts NEEDLE FILES SET.
    $ 19.95




    ts5) OEM and aftermarket Mikuni carb throttle shaft retaining E-CLIP...these shaft retainer clips go directly "outside" of the plastic shim washers listed above on the #1 and #4 carbs only. Used on all XJ550, 1984-85 FJ600, 1992-98 XJ600 Seca II, XJ650 Turbo, XJ700-X, XJ750-X, all XJ900RK, RL, N/FN, and F models, XJ1100, XS1100 models, 1984-85 FJ1100, and 1986-93 FJ1200 models..


    HCP6836 OEM Mikuni throttle shaft end retaining E-CLIP, bright plated spring steel, each:
    $ 6.95

    HCP6836SET2 OEM Mikuni throttle shaft end retaining E-CLIPS, set of 2:
    $ 11.95


    HCP905 Aftermarket Mikuni throttle shaft end retaining E-CLIP, black-phosphate coated spring steel as original, each:
    $ 3.95

    HCP905SET2 Aftermarket Mikuni throttle shaft end retaining E-CLIPS, set of 2:
    $ 6.95


    HCP2909 Aftermarket Mikuni throttle shaft end retaining E-CLIP, type 420 stainless spring steel, each:
    $ 4.95

    HCP2909SET2 Aftermarket Mikuni throttle shaft end retaining E-CLIPS, set of 2:
    $ 8.95



    ts55) OEM and aftermarket Mikuni carb THROTTLE SHAFT BRACKET RETAINER NUT and LOCKWASHER......used to secure the end bracket to the throttle shafts. For use on the #2 and #3 carbs only on all XJ550 models, 1984-85 FJ600, 1992-98 XJ600 Seca II, XJ650 Turbo models, and 1980-81 XS1100 models, used on all 4 carbs on 1978-79 XS1100 models, and used only on carb #3 on all XJ700-X, all XJ750-X, all XJ900, and XJ1100 models.

    HCP22884 OEM throttle shaft end bracket retaining NUT, to secure the shaft end bracket to the shaft. Fits all 1978-81 XS1100 models carbs: use on all 4 carbs on the 1978-919 XS1100 carbs, and on all 4 carbs on the 1980-81 models. Each:
    $ 6.95

    HCP16805 Aftermarket throttle shaft end bracket retaining NUT, use 1 per shaft. Special thin nut is made from 18/8 stainless steel and has a bright finish. Use on the #2 and #3 carbs only on all XJ550 models, 1984-85 FJ600, 1992-98 XJ600 Seca II, XJ650 Turbo models, and only on carb #3 on all XJ700-X, all XJ750-X, all XJ900, and XJ1100 models. NOTE: the original nut is a 12mm hex; these are 13mm but will fit and work just fine. Each:
    $ 2.95



    HCP2185 OEM throttle shaft end bracket retaining nut LOCK WASHER, use 1 per shaft on the #2 and #3 carbs on all XJ550, 1984-85 FJ600, 1992-98 XJ600 Seca II, and XJ650 Turbo models, and only on carb #3 on all XJ700-X, all XJ750-X, all XJ900, and XJ1100 models . Made from 18/8 stainless steel and has a bright finish. Each:
    $ 1.95

    HCP16209 Aftermarket throttle shaft end bracket retaining nut LOCK WASHER, zinc-plated alloy steel, use 1 per shaft on the #2 and #3 carbs on all XJ550, 1984-85 FJ600, 1992-98 XJ600 Seca II, and XJ650 Turbo models, and only on carb #3 on all XJ700-X, all XJ750-X, all XJ900, and XJ1100 models. Each:
    $ 0.95

    HCP16100 Aftermarket throttle shaft end bracket retaining nut LOCK WASHER, 18-8 stainless-steel with a bright finish, use 1 per shaft on the #2 and #3 carbs on all XJ550, 1984-85 FJ600, 1992-98 XJ600 Seca II, and XJ650 Turbo models, and only on carb #3 on all XJ700-X, all XJ750-X, all XJ900, and XJ1100 models. Each:
    $ 0.95

    HCP16102 Aftermarket throttle shaft end bracket retaining nut LOCK WASHER, black-oxide coated finish, use 1 per shaft on the #2 and #3 carbs on all XJ550, 1984-85 FJ600, 1992-98 XJ600 Seca II, and XJ650 Turbo models, and only on carb #3 on all XJ700-X, all XJ750-X, all XJ900, and XJ1100 models. Each:
    $ 0.95



    ts67) Aftermarket Mikuni carb THROTTLE SHAFTS and END BRACKETS......these re-plated throttle shafts and the #2 and #3 carb (only) shaft end brackets are a great way to restore that brand-new look to your carb kit. Correct yellow-zinc plated brackets. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft or bracket.

    XJ550 models:

    HCP13624RP OEM re-plated original THROTTLE SHAFT, complete with its swaged (non-removable) shaft end bracket. Fits the #1 carb on all XJ550 models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft. Each:
    $ 29.95 + $ 25.00 refundable core charge

    HCP13625RP OEM re-plated original THROTTLE SHAFT, complete with its swaged (non-removable) shaft end bracket. Fits the #2 carb on all XJ550 models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft. Each:
    $ 29.95 + $ 25.00 refundable core charge

    HCP13626RP OEM re-plated original THROTTLE SHAFT, complete with its swaged (non-removable) shaft end bracket. Fits the #3 carb on all XJ550 models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft. Each:
    $ 29.95 + $ 25.00 refundable core charge

    HCP13627RP OEM re-plated original THROTTLE SHAFT, complete with its swaged (non-removable) shaft end bracket. Fits the #4 carb on all XJ550 models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft. Each:
    $ 29.95 + $ 25.00 refundable core charge

    HCP13679RP OEM re-plated original throttle shaft END BRACKET, attaches to the threaded end of the #2 carb on all XJ550, 1984-85 FJ600, XJ650 Turbo, XJ700-X, XJ750-X, and all XJ900 models using either the BS35 or BS36 series carbs. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft end bracket. Each:
    $ 19.95 + $ 25.00 refundable core charge

    HCP13680RP OEM re-plated original throttle shaft CABLE QUADRANT / END BRACKET, attaches to the threaded end of the #3 carb on all XJ550 models. This is the half-round bracket that the throttle stud cable attaches to. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft end bracket. Each:
    $ 29.95 + $ 25.00 refundable core charge


    1984-85 FJ600 models:

    HCP23353RP OEM re-plated original THROTTLE SHAFT, complete with its swaged (non-removable) shaft end bracket. Fits the #1 carb on all 1984-85 FJ600 models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft. Each:
    $ 34.95 + $ 25.00 refundable core charge

    HCP23352RP OEM re-plated original THROTTLE SHAFT, complete with its swaged (non-removable) shaft end bracket. Fits the #2 carb on all 1984-85 FJ600 models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft. Each:
    $ 34.95 + $ 25.00 refundable core charge

    HCP233546RP OEM re-plated original THROTTLE SHAFT, complete with its swaged (non-removable) shaft end bracket. Fits the #3 carb on all 1984-85 FJ600 models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft. Each:
    $ 34.95 + $ 25.00 refundable core charge

    HCP23351RP OEM re-plated original THROTTLE SHAFT, complete with its swaged (non-removable) shaft end bracket. Fits the #4 carb on all 1984-85 FJ600 models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft. Each:
    $ 34.95 + $ 25.00 refundable core charge

    HCP13679RP OEM re-plated original throttle shaft END BRACKET, attaches to the threaded end of the #2 carb on all XJ550, 1984-85 FJ600, XJ650 Turbo, XJ700-X, XJ750-X, and all XJ900 models using either the BS35 or BS36 series carbs. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft end bracket. Each:
    $ 19.95 + $ 25.00 refundable core charge

    HCP14271RP OEM re-plated original throttle shaft CABLE QUADRANT / END BRACKET, attaches to the threaded end of the #3 carb on all 1984-85 FJ600 models and XJ650 Turbo models. This is the half-round bracket that the throttle stud cable attaches to. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft end bracket. Each:
    $ 37.95 + $ 25.00 refundable core charge



    XJ650 Turbo models:

    HCP14266RP OEM re-plated original THROTTLE SHAFT, complete with its swaged (non-removable) shaft end bracket. Fits the #1 carb on all XJ650 Turbo models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft. Each:
    $ 34.95 + $ 25.00 refundable core charge

    HCP14267RP OEM re-plated original THROTTLE SHAFT, complete with its swaged (non-removable) shaft end bracket. Fits the #2 carb on all XJ650 Turbo models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft. Each:
    $ 34.95 + $ 25.00 refundable core charge

    HCP14268RP OEM re-plated original THROTTLE SHAFT, complete with its swaged (non-removable) shaft end bracket. Fits the #3 carb on all XJ650 Turbo models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft. Each:
    $ 34.95 + $ 25.00 refundable core charge

    HCP14269RP OEM re-plated original THROTTLE SHAFT, complete with its swaged (non-removable) shaft end bracket. Fits the #4 carb on all XJ650 Turbo models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft. Each:
    $ 34.95 + $ 25.00 refundable core charge

    HCP13679RP OEM re-plated original throttle shaft END BRACKET, attaches to the threaded end of the #2 carb on all XJ550, 1984-85 FJ600, XJ650 Turbo, XJ700-X, XJ750-X, and all XJ900 models using either the BS35 or BS36 series carbs. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft end bracket. Each:
    $ 19.95 + $ 25.00 refundable core charge

    HCP14271RP OEM re-plated original throttle shaft CABLE QUADRANT / END BRACKET, attaches to the threaded end of the #3 carb on all 1984-85 FJ600 models and XJ650 Turbo models. This is the half-round bracket that the throttle stud cable attaches to. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft end bracket. Each:
    $ 37.95 + $ 25.00 refundable core charge




    XJ700-X, XJ750-X, and XJ900RK/RL model using BS35-series carbs:

    HCP18241RP OEM re-plated original THROTTLE SHAFT, complete with its swaged (non-removable) shaft end bracket. Fits the #1 carb on all XJ700-X, XJ750-X, and XJ900RK/RL models using the BS35 series carbs. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft. Each:
    $ 29.95 + $ 25.00 refundable core charge

    HCP18244RP OEM re-plated original THROTTLE SHAFT, complete with its swaged (non-removable) shaft end bracket. Fits the #2 carb on all XJ700-X, XJ750-X, and XJ900RK/RL models using the BS35 series carbs. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft. Each:
    $ 29.95 + $ 25.00 refundable core charge

    HCP18247RP OEM re-plated original THROTTLE SHAFT, complete with its swaged (non-removable) shaft end bracket with pivoting throttle cable attachment point. Fits the #3 carb on all XJ700-X and XJ750-X models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft. Each:
    $ 29.95 + $ 25.00 refundable core charge

    HCP18287RP OEM re-plated original THROTTLE SHAFT, complete with its swaged (non-removable) shaft end bracket with pivoting throttle cable attachment point. Fits the #3 carb on all XJ900RK/RL models using the BS35 series carbs. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft. Each:
    $ 29.95 + $ 25.00 refundable core charge

    HCP18250RP OEM re-plated original THROTTLE SHAFT, complete with its swaged (non-removable) shaft end bracket. Fits the #4 carb on all XJ700-X, XJ750-X, and XJ900RK/RL models using the BS35 series carbs. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft. Each:
    $ 29.95 + $ 25.00 refundable core charge

    HCP13679RP OEM re-plated original throttle shaft END BRACKET, attaches to the threaded end of the #2 carb on all XJ550, 1984-85 FJ600, XJ650 Turbo, XJ700-X, XJ750-X, and all XJ900 models using either the BS35 or BS36 series carbs. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft end bracket. Each:
    $ 19.95 + $ 25.00 refundable core charge

    HCP18249RP OEM re-plated original throttle shaft END BRACKET, attaches to the threaded end of the #3 carb on all XJ700-X, XJ750-X, and all XJ900 models using either the BS35 or BS36 series carbs. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft end bracket. Each:
    $ 19.95 + $ 25.00 refundable core charge



    XJ900 models using BS36-series carbs:

    HCP18304RP OEM re-plated original THROTTLE SHAFT, complete with its swaged (non-removable) shaft end bracket. Fits the #1 carb on all XJ900 models using the BS36 series carbs. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft. Each:
    $ 39.95 + $ 25.00 refundable core charge

    HCP18307RP OEM re-plated original THROTTLE SHAFT, complete with its swaged (non-removable) shaft end bracket. Fits the #2 carb on all XJ900 models using the BS36 series carbs. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft. Each:
    $ 39.95 + $ 25.00 refundable core charge

    HCP18308RP OEM re-plated original THROTTLE SHAFT, complete with its swaged (non-removable) shaft end bracket. Fits the #3 carb on all XJ900 models using the BS36 series carbs. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft. Each:
    $ 39.95 + $ 25.00 refundable core charge

    HCP18312RP OEM re-plated original THROTTLE SHAFT, complete with its swaged (non-removable) shaft end bracket. Fits the #4 carb on all XJ900 models using the BS36 series carbs. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft. Each:
    $ 39.95 + $ 25.00 refundable core charge

    HCP13679RP OEM re-plated original throttle shaft END BRACKET, attaches to the threaded end of the #2 carb on all XJ550, 1984-85 FJ600, XJ650 Turbo, XJ700-X, XJ750-X, and all XJ900 models using either the BS35 or BS36 series carbs. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft end bracket. Each:
    $ 19.95 + $ 25.00 refundable core charge

    HCP18249RP OEM re-plated original throttle shaft END BRACKET, attaches to the threaded end of the #3 carb on all XJ700-X, XJ750-X, and all XJ900 models using either the BS35 or BS36 series carbs. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft end bracket. Each:
    $ 19.95 + $ 25.00 refundable core charge



    XJ1100 models:

    HCP18385RP OEM re-plated original THROTTLE SHAFT, complete with its swaged (non-removable) shaft end bracket. Fits the #1 carb on all XJ1100 models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft. Each:
    $ 34.95 + $ 25.00 refundable core charge

    HCP18387RP OEM re-plated original THROTTLE SHAFT, complete with its swaged (non-removable) shaft end bracket. Fits the #2 carb on all XJ1100 models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft. Each:
    $ 34.95 + $ 25.00 refundable core charge

    HCP18389RP OEM re-plated original THROTTLE SHAFT, complete with its swaged (non-removable) shaft end bracket. Fits the #3 carb on all XJ1100 models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft. Each:
    $ 34.95 + $ 25.00 refundable core charge

    HCP18393RP OEM re-plated original THROTTLE SHAFT, complete with its swaged (non-removable) shaft end bracket. Fits the #4 carb on all XJ1100 models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft. Each:
    $ 34.95 + $ 25.00 refundable core charge

    HCP18388RP OEM re-plated original throttle shaft END BRACKET, attaches to the threaded end of the #2 carb on all XJ1100 models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft end bracket. Each:
    $ 24.95 + $ 25.00 refundable core charge

    HCP18390RP OEM re-plated original throttle shaft CABLE QUADRANT / END BRACKET, attaches to the threaded end of the #3 carb on all XJ1100 models. This is the half-round bracket that the throttle stud cable attaches to. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-carb shaft end bracket. Each:
    $ 39.95 + $ 25.00 refundable core charge



    MIKUNI BUTTERFLY VALVE SYNCH SCREWS HARDWARE:

    ts37) The closed position of the individual throttle plate "butterfly" valves is controlled via a fine-threaded, spring-loaded SYNCH SCREW.........these are the actual screws that are adjusted when performing a "running synch" on the engine.

    http://www.xjbikes.com/forums/threads/running-sync-screw-in-or-out-that-is-the-question.75716/

    Our re-plated Mikuni synch SCREWS, SPRINGS, and PLUNGER RODS allow you to re-create the original look and beauty of these carb racks. These parts are available re-plated to their correct original yellow-zinc appearance. If you need to replace any missing hardware, or just want to create a show-winning look, then you should start your shopping list here! NOTE: all synch hardware pieces are re-plated, used parts, and as such, may have minor cosmetic flaws (tooling marks, fastener marks, etc.). Most such marks will not be visible once installed. Also, all re-plated items require a refundable core charge which will be credited back to you once you return a same-model, same-type of item(s) as you purchased. Since these are re-plated used parts, we do require an exchange for your original parts so we can have a steady supply of parts to be processed and re-plated for future sales.


    If the threaded holes in the throttle shaft brackets (where the synch screws are fitted) are overly tight, you may want to clean ("chase") the threads so you get a like-new feel to them:

    HCP28202 Aftermarket THREAD CHASER AND CLEAN-UP TAP, made from a high-speed titanium nitride coated steel. For the following holes: Mikuni and Hitachi synch screw threads in the throttle shaft brackets, and Mikuni and Hitachi idle speed bolt threads in lower rack bracket.
    $ 12.95

    HCP28170 Aftermarket thread tap or EZ-out extractor TAP HANDLE, featuring offset tap handles and fully adjustable head for all m3-m12 size taps and size 0 to ½” extractors. This is the proper way to hold a tap or extractor to insure that the force is directed straight down and doesn’t “wobble” as you are cutting, reaming, or extracting. Much better than using pliers or vise-grips to hold the tool……..
    $ 17.95



    HCP14204 OEM throttle valve adjuster SYNCH SCREW AND SPRINGS SET, use 1 per carb on the #1, #2, and #4 carb (the #3 carb does not use a synch screw). Fits all XJ550, 1984-85 FJ600, XJ650 Turbo, XJ700-X, XJ750-X, and XJ900 models. Each set contains two springs and one screw (the thick-wire spring is for the screw; the thin-wire spring if for the bracket arms).
    $ discontinued

    HCP22365 OEM throttle valve adjuster SYNCH SCREW AND SPRINGS SET, use 1 per carb on the #1, #2, and #4 carb (the #3 carb does not use a synch screw). Fits all 1992-98 XJ600 Seca II models. Each set contains two springs and one screw (the thick-wire spring is for the screw; the thin-wire spring if for the bracket arms).
    $ 19.95

    HCP18398 OEM throttle valve adjuster SYNCH SCREW AND SPRING SET, use 1 per carb on the #1, #2, and #4 carb (the #3 carb does not use a synch screw). Fits all XJ1100 and 1980-81 XS1100 models. Each set contains one spring and screw:
    $ discontinued


    HCP5159RP OEM re-plated throttle valve adjuster SYNCH SCREW, use 1 per carb on the #1, #2, and #4 carb (the #3 carb does not use a synch screw). Fits all XJ550, XJ650 Turbo, all water-cooled XJ700-X and XJ750-X models, and all XJ900 (BS34- and BS35-series carbs) models. Correct yellow-zinc plated screw has the straight-slot cheese-head profile. NOTE: requires a $ 5.00 core charge, refundable upon the return of an undamaged, same-model, same-type screw.
    Each:
    $ 8.95 + $ 5.00 refundable core charge

    HCP18380RP OEM re-plated throttle valve adjuster SYNCH SCREW, use 1 per carb on the #1, #2, and #4 carb (the #3 carb does not use a synch screw). Fits all XJ1100 carbs. Correct yellow-zinc plated screw has the straight-slot cheese-head profile. NOTE: requires a $ 5.00 core charge, refundable upon the return of an undamaged, same-model, same-type screw.
    Each:
    $ 9.95 + $ 5.00 refundable core charge



    HCP5155 OEM throttle valve adjuster SYNCH SCREW SPRING, use 1 per carb on the #1, #2, and #4 carb (the #3 carb does not use a synch screw). Fits all XJ550, XJ650 Turbo, XJ700-X, XJ750-X, XJ900, XJ1100, and 1980-81 XS1100 models. This is the thicker-gauge wire “upper” spring only which fits over the screw. Each:
    $ 11.95

    HCP5155RP OEM re-plated throttle valve adjuster SYNCH SCREW SPRING, use 1 per carb on the #1, #2, and #4 carb (the #3 carb does not use a synch screw). Fits all XJ550, XJ650 Turbo, XJ700-X, XJ750-X, and XJ900 models using BS35- and BS36-series carbs. This is the thicker-gauge wire “upper” spring only which fits over the screw. Correct yellow-zinc plated spring. NOTE: requires a $ 4.00 core charge, refundable upon the return of an undamaged, same-model, same-type spring. Each:
    $ 7.95 + $ 4.00 refundable core charge

    HCP18381RP OEM re-plated throttle valve adjuster SYNCH SCREW SPRING, use 1 per carb on the #1, #2, and #4 carb (the #3 carb does not use a synch screw). Fits all XJ1100 and 1980-81 XS1100 models. This is the “upper” spring only which fits over the screw. Correct yellow-zinc plated spring. NOTE: requires a $ 5.00 core charge, refundable upon the return of an undamaged, same-model, same-type spring. Each:
    $ 11.95 + $ 5.00 refundable core charge




    HCP18382RP OEM re-plated throttle valve adjuster SYNCH PLUNGER ROD, use 1 per carb on the #1, #2, and #4 carb (the #3 carb does not use a synch screw system). Fits all XJ1100 carbs. Correct yellow-zinc plated plunger rod fits into the “lower” section of the throttle arms. Does not include the spring or the retaining circlips listed below. NOTE: requires a $ 5.00 core charge, refundable upon the return of an undamaged, same-model, same-type rod.
    Each:
    $ 12.95 + $ 5.00 refundable core charge

    HCP18383RP OEM re-plated throttle valve adjuster PLUNGER ROD SPRING, use 1 per carb on the #1, #2, and #4 carb (the #3 carb does not use a synch screw). Fits all XJ1100 models. Correct yellow-zinc plated spring fits the HCP18382RP rod above. NOTE: requires a $ 5.00 core charge, refundable upon the return of an undamaged, same-model, same-type spring.
    Each:
    $ 11.95 + $ 5.00 refundable core charge


    HCP23845 Aftermarket throttle valve synch plunger rod RETAINING CLIP, use 1 per carb on the #1, #2, and #4 carb (the #3 carb does not use a synch screw). Bright stainless steel material. Fits all XJ1100 and 1980-81 XS1100 models. This is the for the plunger rod on the "lower" section only. Each:
    $ 3.95

    HCP23846 Aftermarket throttle valve synch plunger rod RETAINING CLIP, use 1 per carb on the #1, #2, and #4 carb (the #3 carb does not use a synch screw). Yellow zinc-plated alloy steel material. Fits all XJ1100 and 1980-81 XS1100 models. This is the for the plunger rod on the "lower" section only. Each:
    $ 2.95

    HCP23905 Aftermarket throttle valve synch plunger rod RETAINING CLIP, use 1 per carb on the #1, #2, and #4 carb (the #3 carb does not use a synch screw). Dark grey alloy steel naterial. Fits all XJ1100 and 1980-81 XS1100 models. This is the for the plunger rod on the "lower" section only. Each:
    $ 1.95



    HCP5160RP OEM re-plated throttle valve adjuster SYNCH PLUNGER ROD SPRING, use 1 per carb on the #1, #2, and #4 carb (the #3 carb does not use a synch screw). Fits all XJ550, XJ650 Turbo, XJ700-X, XJ750-X, and XJ900 models using BS35- and BS36-series carbs. This is the thinner-gauge wire “lower” spring only which fits over the plunger. Correct yellow-zinc plated spring. NOTE: requires a $ 4.00 core charge, refundable upon the return of an undamaged, same-model, same-type spring. Each:
    $ 11.95 + $ 4.00 refundable core charge

    HCP18383RP OEM re-plated throttle valve adjuster SYNCH PLUNGER ROD SPRING, use 1 per carb on the #1, #2, and #4 carb (the #3 carb does not use a synch screw). Fits all XJ1100 and 1980-81 XS1100 models. This is the thinner-gauge wire “lower” spring only which fits over the plunger. Correct yellow-zinc plated spring. NOTE: requires a $ 5.00 core charge, refundable upon the return of an undamaged, same-model, same-type spring. Each:
    $ 12.95 + $ 5.00 refundable core charge




    MIKUNI IDLE MIXTURE SCREW PARTS:

    NOTE: idle mixture screws are also referred to as "pilot mixture screws" or "pilot screws".

    If you've never delved into the guts of your carburetor idle mixture screw port, it can sometimes be confusing. Here's the playbook for this critical area:

    If we were looking at a cut-away of the carb body/idle mixture screw bore, the order of parts, from bottom to top, would be:

    a) HCP895 o-ring
    b) HCP896 spring seat washer
    c) the tension spring
    d) the idle mixture screw
    e) the metal anti-tamper cap.

    What is mostly confusing is the order of the o-ring versus the spring seat washer....which goes in the hole first? The answer is that the HCP895 O-ring does. The HCP896 washer primarily acts as the lower "seat" for the HCP6574 tension spring, while also keeping the o-ring firmly and securely in place.

    NOTE: if you come across a stuck, seized, or otherwise so badly damaged screw that just won't come out, then here is the best advice that we can offer to deal with it:

    http://xjbikes.com/forums/index.php?threads/32017



    ims3) OEM and aftermarket Mikuni IDLE MIXTURE SCREW AND SCREW SETS are correct replacements for use on all original XJ550, 1984-85 FJ600, 1992-98 XJ600 Seca II, XJ650 Turbo, XJ700-X, XJ750-X, XJ900, XJ1100, and XS1100 model carbs.

    HCP23241 OEM Mikuni IDLE MIXTURE SCREW, original large ”knurled-head” style used on all 1978-79 XS400-2 E/F, 1977-79 XS400 D/E/F, 1978 XS500 E, 1978-79 XS750 E/SE/F/SF, and 1978-79 XS1100 model carbs. Each:
    $ 34.95

    HCP23241SET4 OEM Mikuni IDLE MIXTURE SCREWS, set of 4:
    $ 134.95



    HCP23269 Aftermarket Mikuni IDLE MIXTURE SCREW, original large ”knurled-head” style used on all 1978-79 XS400-2 E/F, 1977-79 XS400 D/E/F, 1978 XS500 E, 1978-79 XS750 E/SE/F/SF, and 1978-79 XS1100 model carbs. Each:
    $ 27.95

    HCP23269SET4 Aftermarket Mikuni IDLE MIXTURE SCREWS, set of 4:
    $ 99.95




    HCP8397 Aftermarket Mikuni IDLE MIXTURE SCREW, machined brass ultra-fine pitch threaded pilot circuit ("idle mixture") adjustment screw is a correct replacement on all XJ550, 1986-88 FZ600, 1986-90 YX600 Radian, 1992-98 XJ600 Seca II, XJ650 Turbo, XJ700-X, XJ750-X, and XJ900RK, RL, N, FN, and F model carbs. Although slightly different in needle taper, it may also be used in the XJ1100, 1980-81 XS1100, 1984-85 FJ1100, and 1986-93 FJ1200 carbs successfully. The screw tension spring, tension spring seat washer, and o-ring are not included. Each:
    $ 16.95

    HCP8397SET4 Aftermarket Mikuni IDLE MIXTURE SCREWS, set of 4:
    $ 59.95



    HCP3745 OEM Mikuni IDLE MIXTURE SCREW SET....contains the brass idle mixture screw, spring, spring washer, and the o-ring. Original size for all XJ550, 1984-85 FJ600, 1986-88 FZ600, 1986-90 YX600 Radian, 1992-98 XJ600 Seca II, XJ650 Turbo, XJ700-X, XJ750-X, and XJ900RK, RL, N, FN, and F model carbs. NOTE: Although slightly different in needle taper, the screw contained in this kit may also be used in the XJ1100 carbs. The tension spring contained in this kit is not the correct length for the 1984-85 FJ600, XJ650 Turbo, all XJ900RK, RL, N/FN, and F models, XJ1100, and 1980-81 XS1100 models, but will work. Each:
    $ 17.95

    HCP3745SET4 OEM Mikuni IDLE MIXTURE SCREW SETS, set of 4:
    $ 69.95



    HCP11779 Aftermarket Mikuni IDLE MIXTURE SCREW SET....contains the brass idle mixture screw, spring, spring washer, and the o-ring. Original size for all XJ550, 1986-88 FZ600, 1986-90 YX600 Radian, 1992-98 XJ600 Seca II, XJ700-X, and XJ750-X model carbs. Each:
    $ 22.95

    HCP11779SET4 Aftermarket Mikuni IDLE MIXTURE SCREW SETS, set of 4:
    $ 89.95




    HCP16905 Aftermarket Mikuni IDLE MIXTURE SCREW SET....contains the brass idle mixture screw, spring, spring washer, and the o-ring. Original size for all 1984-85 FJ600, XJ650 Turbo, all XJ900RK, RL, N, FN, and F models, and XJ1100 model carbs. NOTE: Although slightly different in taper, the screw contained in this kit may successfully be used in the XJ1100 and 1980-81 XS1100 carbs. Each:
    $ 21.95

    HCP16905SET4 Aftermarket Mikuni IDLE MIXTURE SCREW SETS, set of 4:
    $ 77.95




    ddd) Aftermarket Mikuni IDLE MIXTURE SCREW O-RING.....a "must-replace" item when rebuilding your carbs. Made of long-lasting, fuel-resistant Buna-N material.

    HCP895 Aftermarket Mikuni idle mixture screw O-RING, fits all XJ550, 1984-85 FJ600, 1986-88 FZ600, 1986-90 YX600 Radian, 1992-98 XJ600 Seca II, XJ650 Turbo, XJ700-X, XJ750-X, all XJ900RK, RL, N/FN, and F models, XJ1100, 1980-81 XS1100, 1984-85 FJ1100, and 1986-93 FJ1200 carbs, each:
    $ 2.95

    HCP895SET4 Aftermarket Mikuni idle mixture screw O-RINGS, set of 4:
    $ 7.95



    eee) Aftermarket Mikuni IDLE MIXTURE SCREW TENSION SPRING SEAT WASHER.....also a "must-replace" item when rebuilding your carbs. Made of long-lasting, fuel- and water-resistant 18-8 stainless steel material.

    HCP896 Aftermarket Mikuni idle mixture screw tension spring SEAT WASHER, fits all XJ550, 1984-85 FJ600, 1986-88 FZ600, 1986-90 YX600 Radian, 1992-98 XJ600 Seca II, XJ650 Turbo, XJ700-X, XJ750-X, all XJ900RK, RL, N/FN, and F models, XJ1100, 1980-81 XS1100, 1984-85 FJ1100, and 1986-93 FJ1200 carbs, each:
    $ 2.95

    HCP896SET4 Aftermarket Mikuni idle mixture screw tension spring SEAT WASHERS, set of 4:
    $ 8.95



    ims6) Aftermarket carb IDLE MIXTURE SCREW TENSION SPRING, brand new reproductions exactly replace damaged, rusted, or missing originals. High-strength carbon-steel coil springs have a baked yellow-zinc plating as original.

    HCP6574 Aftermarket idle mixture screw TENSION SPRING, fits Mikuni carbs used on all XJ550, 1986-88 FZ600, 1986-90 YX600 Radian, 1992-98 XJ600 Seca II, XJ700-X, and XJ750-X models, each:
    $ 5.95

    HCP6574SET4 Aftermarket idle mixture screw TENSION SPRINGS, set of 4:
    $ 19.95



    HCP8544 Aftermarket idle mixture screw TENSION SPRING, fits Mikuni carbs used on all 1984-85 FJ600, XJ650 Turbo, all XJ900RK, RL, N/FN, and F models, XJ1100, 1980-81 XS1100, 1984-85 FJ1100, and 1986-93 FJ1200 carbs, each:
    $ 5.95

    HCP8544SET4 Aftermarket idle mixture screw TENSION SPRINGS, set of 4:
    $ 19.95



    HCP23270 Aftermarket idle mixture screw TENSION SPRING, fits Mikuni carbs used on all 1978-79 XS1100 models, each:
    $ 5.95

    HCP23270SET4 Aftermarket idle mixture screw TENSION SPRINGS, set of 4:
    $ 19.95




    ims3) OEM and aftermarket idle mixture screw bore hole TAMPER CAPS, original plastic cap (1978-79 XS1100) or aluminum cap (all other models) exactly replaces the originals. sealing cap and has the small breather hole in the center as original. Aftermarket rubber plugs makes installation and removal a breeze, and are highly recommended as a replacement for the original style cap.


    HCP23240 OEM Mikuni idle mixture screw plastic TAMPER CAP, has the slot openings in the center as original. Used on all 1978-79 XS1100 models. Each:
    $ 29.95

    HCP23240SET4 OEM Mikuni idle mixture screw bore hole TAMPER CAPS, set of 4:
    $ 99.95



    HCP3748 OEM Mikuni idle mixture screw bore hole aluminum TAMPER CAP, has the small breather hole in the center as original. Used on all XJ550, 1984-85 FJ600, 1986-88 FZ600, 1986-90 YX600 Radian, XJ650 Turbo, XJ700-X, XJ750-X, all XJ900, XJ1100, and 1980-81 XS1100 models. Each:
    $ 6.00

    HCP3748SET4 OEM Mikuni idle mixture screw bore hole TAMPER CAPS, set of 4:
    $ 22.95



    HCP7376 Aftermarket Mikuni idle mixture screw bore hole RUBBER PLUG, tapered design with mushroom head allows repeated removal and re-use. NOTE: may be a slightly loose fit on some models; if so, use a small amount of gasket or rubber adhesive to secure firmly in place (just a thin smear will do). Waterproof and dustproof design keeps the screw away from dirt and moisture, while also allowing for easy removal for tuning purposes. Fits on all XJ550, 1984-85 FJ600, 1986-88 FZ600, 1986-90 YX600 Radian, XJ650 Turbo, XJ700-X, XJ750-X, all XJ900, XJ1100, and 1980-81 XS1100 models. Each:
    $ 4.50

    HCP7376SET4 Aftermarket Mikuni idle mixture screw bore hole RUBBER PLUGS, set of 4:
    $ 17.95



    HCP14730 Aftermarket Mikuni idle mixture screw bore hole VINYL PLUG, pliable black caps allows repeated removal and re-use. NOTE: may be a slightly loose fit on some models; if so, use a small amount of gasket or rubber adhesive to secure firmly in place (just a thin smear will do). Waterproof and dustproof design keeps the screw away from dirt and moisture, while also allowing for easy removal for tuning purposes. Fits on all XJ550, 1984-85 FJ600, 1986-88 FZ600, 1986-90 YX600 Radian, XJ650 Turbo, XJ700-X, XJ750-X, all XJ900, XJ1100, and 1980-81 XS1100 models. Each:
    $ 1.50

    HCP14730SET4 Aftermarket Mikuni idle mixture screw bore hole VINYL PLUGS, set of 4:
    $ 5.95



    HCP2398 Aftermarket THREAD CHASER AND CLEAN-UP TAP, made from a high-speed uncoated steel. For use on all Mikuni idle mixture screw ports, and all Hitachi idle mixture screw ports with models using ultra-fine threaded idle mixture screws. NOTE: these threaded holes almost always need cleaning or re-tapping. Be careful when using these taps to make sure that you are cleaning and/or re-cutting the original threads, rather than any crossed/stripped threads that may be present. And beware the tiny needle tip hole at the bottom of the screw. Finally, note that the flat o-ring land (at the bottom of the screw hole) must not be damaged or gouged.......make sure that you do not run the tap in deep enough to damage that smooth land.
    $ 12.95

    HCP28170 Aftermarket thread tap or EZ-out extractor TAP HANDLE, featuring offset tap handles and fully adjustable head for all m3-m12 size taps and size 0 to ½” extractors. This is the proper way to hold a tap or extractor to insure that the force is directed straight down and doesn’t “wobble” as you are cutting, reaming, or extracting. Much better than using pliers or vise-grips to hold the tool……..
    $ 17.95



    v) IDLE MIXTURE SCREW TOOL is designed for the proper removal and fine adjustment of the idle mixture screw, preventing the destruction of the fragile straight slot head on these screws. An exact-fit blade is set at the end of a 12” long shaft, and the screw driving bit is rotated via a handle on the end of tool....this design not only eliminates stripping out the idle mixture screw slot, but also allows for very fine adjustment of the screw when fine-tuning the carbs (when using a colortune plug, etc.). The long horizontal shaft allows you to easily reach the center carbs from the outside of the carb bank, no need to lift the tank to access them. A knurled section on the shaft provides for a positive grip. A very neat little tool and it'll last a lifetime or two. Fits: all XJ550 all, all XJ650, all XJ700, all XJ750, all XJ900, XJ1100, and all 1980-81 XS1100 carbs.

    HCP24870 Aftermarket idle mixture screw REMOVAL AND ADJUSTER TOOL, fits all Hitachi and all Mikuni idle mixture screws.
    $ 27.95




    MIKUNI IDLE SPEED SCREW PARTS:

    Not to be confused with the idle MIXTURE screw listed above, the IDLE SPEED SCREW is the large knurled-head screw that lives dead center, at the bottom of the carb rack, in-between the #2 and #3 cars, and pointing straight back. This screw is used to adjust the idle speed of the engine, and has no effect on the idle mixture nor the carb (engine) "synch" settings!

    Our re-plated Mikuni idle speed adjuster SCREWS, SPRINGS, and SUPPORT BRACKETS allow you to re-create the original look and beauty of these carb racks. These parts are available re-plated to their correct original silver- or yellow-zinc appearance. If you need to replace any missing hardware, or just want to create a show-winning look, then you should start your shopping list here! NOTE: all synch hardware pieces are re-plated, used parts, and as such, may have minor cosmetic flaws (tooling marks, fastener marks, etc.). Most such marks will not be visible once installed. Also, all re-plated items require a refundable core charge which will be credited back to you once you return a same-model, same-type of item(s) as you purchased. Since these are re-plated used parts, we do require an exchange for your original parts so we can have a steady supply of parts to be processed and re-plated for future sales.


    If the threaded hole in the lower rack bracket (where the idle speed screw is fitted) is overly tight, you may want to clean ("chase") the threads so you get a like-new feel to them:

    HCP28202 Aftermarket THREAD CHASER AND CLEAN-UP TAP, made from a high-speed titanium nitride coated steel. For the following holes: Mikuni and Hitachi synch screw threads in the throttle shaft brackets, and Mikuni and Hitachi idle speed bolt threads in lower rack bracket.
    $ 12.95

    HCP28170 Aftermarket thread tap or EZ-out extractor TAP HANDLE, featuring offset tap handles and fully adjustable head for all m3-m12 size taps and size 0 to ½” extractors. This is the proper way to hold a tap or extractor to insure that the force is directed straight down and doesn’t “wobble” as you are cutting, reaming, or extracting. Much better than using pliers or vise-grips to hold the tool……..
    $ 17.95



    HCP5161 OEM idle speed ADJUSTMENT SCREW AND SPRING SET, fits all XJ550, 1986-88 FZ600, 1986-90 YX600 Radian, XJ650 Turbo, XJ700-X, XJ750-X, and XJ900RK, RL, N/FN, and F models.
    $ 42.95

    HCP22655 OEM idle speed ADJUSTMENT SCREW AND SPRING SET, fits all 1992-98 XJ600 Seca II models. This set is the same as the screw and spring used on all of the following models, except these parts ahve a brigh tzinc-plated finish rather than the original yellow-zinc plating: XJ1100, 1980-81 XS1100 all models, 1980-81 XS400 G/SG/H/SH models, and 1983 XZ550RK models.
    $ 24.95



    HCP5161RP OEM re-plated idle speed adjuster SCREW, use 1 per carb rack in-between the #3 and #4 carbs. Fits all XJ550, 1986-88 FZ600, 1986-90 YX600 Radian, XJ650 Turbo, all water-cooled XJ700-X and XJ750-X models, and all XJ900 models (using the BS35- or BS36-series carbs). Correct yellow-zinc plated screw has the large knurled head. NOTE: requires a $ 10.00 core charge, refundable upon the return of an undamaged, same-model, same-type screw. Each:
    $ 29.95 + $ 10.00 refundable core charge

    HCP5162RP OEM re-plated idle speed adjuster IDLE SPEED SCREW SPRING, use 1 per carb rack on the speed adjuster screw. Fits all XJ550, 1986-88 FZ600, 1986-90 YX600 Radian, XJ650 Turbo, all water-cooled XJ700-X and XJ750-X models, and all XJ900 models (using the BS35- or BS36-series carbs). Correct yellow-zinc plated spring. NOTE: requires a $ 5.00 core charge, refundable upon the return of an undamaged, same-model, same-type spring. Each:
    $ 12.95 + $ 5.00 refundable core charge


    HCP9808RP OEM re-plated idle speed adjuster SCREW, use 1 per carb rack in-between the #3 and #4 carbs. Fits all XJ1100 models. Correct yellow-zinc plated “shorty” screw has the large knurled head. b]NOTE[/b]: requires a $ 15.00 core charge, refundable upon the return of an undamaged, same-model, same-type screw. Each:
    $ 34.95 + $ 15.00 refundable core charge

    HCP9812RP OEM re-plated idle speed adjuster IDLE SPEED SCREW SPRING, use 1 per carb rack on the speed adjuster screw. Fits all XJ1100 models. Correct yellow-zinc plated spring fits the HCP9808RP screw above. NOTE: requires a $ 5.00 core charge, refundable upon the return of an undamaged, same-model, same-type spring.
    Each:
    $ 14.95 + $ 5.00 refundable core charge



    HCP14257RP OEM re-plated carb lower rack lateral bracket IDLE SPEED BOLT EXTENSION, this bracket carries the idle speed adjuster bolt. Beautiful silver-zinc plating brings the bottom side of these carbs to life. Fits all BS28-series carbs as used on all XJ550, XJ650 Turbo, XJ700-X, XJ750-X, and all XJ900 (BS35 and BS36 series) carbs. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 29.95 + $ 25.00 refundable core charge

    HCP18260RP OEM re-plated carb lower rack lateral bracket IDLE SPEED BOLT EXTENSION, this bracket carries the idle speed adjuster bolt. Beautiful silver-zinc plating brings the bottom side of these carbs to life. Fits all BS28-series carbs as used on all XJ1100 (BS34) models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 39.95 + $ 25.00 refundable core charge



    HCP9848 Aftermarket Mikuni idle speed screw rubber GROMMET, fits into the lower carb rack bracket opening where the idle speed screw enters the bracket. This replacement grommet is quite a bit larger than the stock grommet, but fits and works properly. Use a little bit of silicone grease on the screw's shaft where it passes through this grommet and it will be silky-smooth in operation. Fits all XJ550, 1986-88 FZ600, 1986-90 YX600 Radian, XJ650 Turbo, XJ700-X, XJ750-X, and XJ900RK models
    $ 1.95


    HCP4024 Aftermarket Mikuni carb idle speed screw WASHER, not an original part, but if you use a set of these thin flat plastic shimming washers in-between the spring and the screw, and between the spring and the bracket (in other words, on either end of the spring), it greatly reduces the friction between the two and makes the idle screw silky-smooth to adjust! Fits all XJ550, 1986-88 FZ600, 1986-90 YX600 Radian, XJ650 Turbo, XJ700-X, XJ750-X, XJ900RK, and XJ1100 models Each:
    $ 1.95

    HCP4024SET2 Aftermarket Hitachi carb idle speed screw WASHERS, set of 2:
    $ 2.95



    HCP60 OEM Mikuni idle speed screw bracket mounting SCREW, mounts the idle speed screw bracket to the lower carb rack bracket, fits all XJ550, 1984-85 FJ600, XJ700-X, XJ750-X, and XJ900 models. Use 1 per bracket.
    $ 2.95

    HCP910 Aftermarket Mikuni idle speed screw bracket mounting SCREW, mounts the idle speed screw bracket to the lower carb rack bracket, fits all XJ550, 1984-85 FJ600, XJ700-X, XJ750-X, and XJ900 models. Zinc-plated alloy steel, phillips-drive screw. Use 1 per bracket.
    $ 1.00

    HCP62 Aftermarket Mikuni idle speed screw bracket mounting SCREW, mounts the idle speed screw bracket to the lower carb rack bracket, fits all XJ550, 1984-85 FJ600, XJ700-X, XJ750-X, and XJ900 models. 18-8 stainless steel, phillips-drive screw. Use 1 per bracket.
    $ 1.50

    HCP308 Aftermarket Mikuni idle speed screw bracket mounting SCREW, mounts the idle speed screw bracket to the lower carb rack bracket, fits all XJ550, 1984-85 FJ600, XJ700-X, XJ750-X, and XJ900 models. 18-8 stainless steel, buttonhead, allen-drive screw. Use 1 per bracket.
    $ 1.25

    HCP310 Aftermarket Mikuni idle speed screw bracket mounting SCREW, mounts the idle speed screw bracket to the lower carb rack bracket, fits all XJ550, 1984-85 FJ600, XJ700-X, XJ750-X, and XJ900 models. 18-8 stainless steel, bright plated, socket head, allen-drive screw. Use 1 per bracket.
    $ 1.50

    HCP64 Aftermarket Mikuni idle speed screw bracket mounting SCREW, mounts the idle speed screw bracket to the lower carb rack bracket, fits all XJ550, 1984-85 FJ600, XJ700-X, XJ750-X, and XJ900 models. 18-8 stainless steel, black plated, socket head, allen-drive screw. Use 1 per bracket.
    $ 1.00



    HCP9180 OEM Mikuni idle speed screw bracket mounting SCREW, mounts the idle speed screw bracket to the lower carb rack bracket, fits all XJ650 Turbo models. Use 1 per bracket.
    $ 1.95

    HCP21368 Aftermarket Mikuni idle speed screw bracket mounting SCREW, mounts the idle speed screw bracket to the lower carb rack bracket, fits all XJ650 Turbo models. Zinc-plated alloy steel, panhead phillps-drive style. Use 1 per bracket.
    $ 1.00

    HCP5889 Aftermarket Mikuni idle speed screw bracket mounting SCREW, mounts the idle speed screw bracket to the lower carb rack bracket, fits all XJ650 Turbo models. 18-8 stainless steel, panhead phillps-drive style. Use 1 per bracket.
    $ 1.25

    HCP21369 Aftermarket Mikuni idle speed screw bracket mounting SCREW, mounts the idle speed screw bracket to the lower carb rack bracket, fits all XJ650 Turbo models. Black-oxide coated 18-8 stainless steel, panhead phillps-drive style. Use 1 per bracket.
    $ 1.95

    HCP21372 Aftermarket Mikuni idle speed screw bracket mounting SCREW, mounts the idle speed screw bracket to the lower carb rack bracket, fits all XJ650 Turbo models. 18-8 stainless steel, button head, hex-drive style. Use 1 per bracket.
    $ 1.25

    HCP21370 Aftermarket Mikuni idle speed screw bracket mounting SCREW, mounts the idle speed screw bracket to the lower carb rack bracket, fits all XJ650 Turbo models. 18-8 stainless steel, socket head, hex-drive style. Use 1 per bracket.
    $ 1.00

    HCP21371 Aftermarket Mikuni idle speed screw bracket mounting SCREW, mounts the idle speed screw bracket to the lower carb rack bracket, fits all XJ650 Turbo models. Black-oxide coated 18-8 stainless steel, socket head, hex-drive style. Use 1 per bracket.
    $ 1.00



    HCP1030 OEM Mikuni idle speed screw bracket mounting SCREW, dark finish alloy steel, panhead, phillips drive. Mounts the idle speed screw bracket to the lower carb rack bracket, fits all XJ1100 models. Use 1 per bracket.
    $ 1.95

    HCP2922 Aftermarket Mikuni idle speed screw bracket mounting SCREW, mounts the idle speed screw bracket to the lower carb rack bracket, fits all XJ1100 models, zinc-plated alloy steel, natural finish, panhead phillips-drive, each:
    $ 1.50

    HCP21362 Aftermarket Mikuni idle speed screw bracket mounting SCREW, mounts the idle speed screw bracket to the lower carb rack bracket, fits all XJ1100 models, 18/8 stainless steel, bright finish, panhead phillips-drive, each:
    $ 1.50

    HCP6714 Aftermarket Mikuni idle speed screw bracket mounting SCREW, mounts the idle speed screw bracket to the lower carb rack bracket, fits all XJ1100 models, button head hex-drive, 18-8 stainless steel, bright finish, each:
    $ 1.50

    HCP6715 Aftermarket Mikuni idle speed screw bracket mounting SCREW, mounts the idle speed screw bracket to the lower carb rack bracket, fits all XJ1100 models, socket head, hex-drive, black-oxide coated alloy steel, each:
    $ 1.25

    HCP6716 Aftermarket Mikuni idle speed screw bracket mounting SCREW, mounts the idle speed screw bracket to the lower carb rack bracket, fits all XJ1100 models, socket head, hex-drive, 18-8 stainless steel, bright finish, each:
    $ 1.50



    HCP55 OEM Mikuni idle speed screw bracket mounting screw LOCK WASHER, use with the idle speed bracket screws listed above. Fits all XJ550, 1984-85 FJ600, XJ700-X, XJ750-X, and XJ900 models. Zinc-plated alloy steel. Use 1 per bracket.
    $ 1.95

    HCP913 Aftermarket Mikuni idle speed screw bracket mounting screw LOCK WASHER, use with the idle speed bracket screws listed above. Fits all XJ550, 1984-85 FJ600, XJ700-X, XJ750-X, and XJ900 models. Zinc-plated alloy steel. Use 1 per bracket.
    $ 1.00

    HCP57 Aftermarket Mikuni idle speed screw bracket mounting screw LOCK WASHER, use with the idle speed bracket screws listed above. Fits all XJ550, 1984-85 FJ600, XJ700-X, XJ750-X, and XJ900 models. 18-8 stainless steel. Use 1 per bracket.
    $ 1.00

    HCP59 Aftermarket Mikuni idle speed screw bracket mounting screw LOCK WASHER, use with the idle speed bracket screws listed above. Fits all XJ550, 1984-85 FJ600, XJ700-X, XJ750-X, and XJ900 models. Black oxide-coated alloy steel. Use 1 per bracket.
    $ 1.00



    MIKUNI CARB STARTER - ENRICHMENT CIRCUIT - CHOKE SYSTEM PARTS:

    The starter (choke) circuit is prone to a number of problems, from clogged passages in the starter jet (down in the bowl) to worn or fractured plunger valves and their related hardware. We've got some of those hard-to-find parts to properly restore your system.


    Mikuni Starter - Enrichment (“Choke”) Circuit Plunger Valves:

    The starter circuit PLUNGER VALVES are the solid brass needle-tip valve that actually shuts off or opens the enrichment circuit. Worn tips or fractured heads renders these valves useless. These valves are SPRING-loaded, and retained in the starter valve port in the carb body by a threaded, hollow-center brass SEAT, which is then surrounded by a small rubber DUST CAP. In addition, XJ650 Turbo models used a rubber O-RING to provide an air-tight seal at the cover-to-carb body mating surface.

    If the threaded seat in the carb body where the plunger shaft brass seat screws into has been injured, or if you want to restore the threads to their like-new condition, these thread chaser taps are what you'll need:

    HCP2400 Aftermarket THREAD CHASER AND CLEAN-UP TAP, made from a high-speed titanium nitride coated steel. For the following holes: Hitachi float valve brass seat hole, and Mikuni starter / enrichment circuit (“choke”) brass plunger seat hole on all XJ550, FJ600, FZ600, YX600, XJ600, XJ650 Turbo, XJ700-X, and XJ750-X carbs.
    $ 14.95

    HCP28133 THREAD CHASER AND CLEAN-UP TAP, made from a high-speed titanium nitride coated steel. For the following holes: Mikuni starter / enrichment circuit (“choke”) brass plunger seat bore hole on all XJ900, XJ1100, and XS1100 carbs.
    $ 23.95

    HCP28170 Aftermarket thread tap or EZ-out extractor TAP HANDLE, featuring offset tap handles and fully adjustable head for all m3-m12 size taps and size 0 to ½” extractors. This is the proper way to hold a tap or extractor to insure that the force is directed straight down and doesn’t “wobble” as you are cutting, reaming, or extracting. Much better than using pliers or vise-grips to hold the tool……..
    $ 17.95



    HCP12013 Aftermarket Mikuni starter plunger valve seat DUST CAP, rubber seat cinches to the screw-in brass plunger seats and provides a dust- and air-tight seal that the plunger valves slides through. Most originals are hardened and inflexible due to heat saturation and no longer provide a good (or any!) sealing at all. Fits all XJ550, 1984-85 FJ600, 1986-88 FZ600, 1986-90 YX600 Radian, 1992-98 XJ600 Seca II, XJ650 Turbo, and XJ700-X, XJ750-X carbs. NOTE: some later-issue factory replacement (parts counter) choke plungers for the XJ550 carbs had a THINNER shaft than the original plunger valves.....the originals were 4.80mm O.D., while the "later" over-the-counter replacements were only about 4.50mm O.D. These replacement rubber caps are designed to fit the original (and our repro) 4.80mm plunger valves; on the skinnier valves, it will allow a vacuum leak leak to occur. We do not have the correct vac caps for the thinner 4.50mm O.D. plunger valves. Each:
    $ 6.95

    HCP12013SET4 Aftermarket Mikuni starter plunger valve seat DUST CAPS, set of 4:
    $ 24.95



    HCP10520 Aftermarket Mikuni starter plunger valve seat DUST CAPS, rubber seat cinches to the screw-in brass plunger seats and provides a dust- and air-tight seal that the plunger valves slides through. Most originals are hardened and inflexible due to heat saturation and no longer provide a good (or any!) sealing at all. Fits all XJ900, XJ1100, and all 1980-81 XS1100 carbs. Each:
    $ 6.95

    HCP10520SET4 Aftermarket Mikuni starter plunger valve seat DUST CAP, set of 4:
    $ 24.95


    HCP12014 Aftermarket Mikuni starter plunger valve seat DUST CAP, rubber seat cinches to the screw-in brass plunger seats and provides a dust- and air-tight seal that the plunger valves slides through. Most originals are hardened and inflexible due to heat saturation and no longer provide a good (or any!) sealing at all. Fits all XJ900, XJ1100, and all 1980-81 XS1100 carbs. Each:
    $ 4.95

    HCP12014SET4 Aftermarket Mikuni starter plunger valve seat DUST CAPS, set of 4:
    $ 18.95



    HCP9846 Aftermarket Mikuni starter plunger valve seat O-RING, correct for the XJ650 Turbo models (o-rings were only used in this area on Turbo carbs). Fits just under the head of the threaded plunger shaft cap. Each:
    $ 1.50

    HCP9846SET4 Aftermarket starter plunger valve seat O-RINGS, set of 4:
    $ 5.00



    HCP5197 OEM Mikuni brass needle-tipped STARTER PLUNGER VALVE, fits all XJ550, 1986-88 FZ600, and 1986-90 YX600 Radian carbs carbs. This is an original Yamaha "service-replacement" part which has a reduced shaft OD of only 4.50mm, and will not properly accept the original nor reproduction HCP12013 dust caps above. Each:
    $ 34.95

    HCP5197SET4 OEM Mikuni brass needle-tipped STARTER PLUNGER VALVES, set of 4:
    $ 134.95


    HCP17581 Aftermarket Mikuni brass needle-tipped STARTER PLUNGER VALVE, fits all XJ550 model carbs. This is a correct reproduction of the original with the 4.80mm OD shaft, and will properly accept the HCP12013 dust caps above. This shaft can also be used as a replacement for the under-sized HCP5197 plunger valve on all 1986-88 FZ600 and 1986-90 YX600 Radian carbs. Each:
    $ 21.95

    HCP17581SET4 Aftermarket Mikuni brass needle-tipped STARTER PLUNGER VALVES, set of 4:
    $ 79.95



    HCP22376 Aftermarket Mikuni brass needle-tipped STARTER PLUNGER VALVE SET, fits all 1992-98 XJ600 Seca II models, each set contains the plunger valve, the spring, the screw-in brass seat, and the rubber dust cap. Each:
    $ 59.95

    HCP22376SET4 Aftermarket Mikuni brass needle-tipped STARTER PLUNGER VALVE SETS, set of 4:
    $ 229.95


    HCP15599 Aftermarket Mikuni brass needle-tipped STARTER PLUNGER VALVE, fits all 1984-85 FJ600, all XJ650 Turbo, XJ700-X, and XJ750-X carbs, each:
    $ 21.95

    HCP15599SET4 Aftermarket Mikuni brass needle-tipped STARTER PLUNGER VALVES, set fo 4:
    $ 79.95


    HCP17582 Aftermarket Mikuni brass needle-tipped STARTER PLUNGER VALVE, fits all XJ900, XJ1100, and all XS1100 carbs, each:
    $ 21.95

    HCP17582SET4 Aftermarket Mikuni brass needle-tipped STARTER PLUNGER VALVES, set of 4:
    $ 79.95



    HCP5198 OEM Mikuni brass starter plunger valve SPRING, fits all XJ550, 1984-85 FJ600, 1986-88 FZ600, 1986-90 YX600 Radian, XJ650 Turbo, XJ700-X, XJ750-X, and all 1978-79 XS1100 models, each:
    $ 8.95


    HCP17583 Aftermarket Mikuni brass starter plunger valve SPRING, fits all XJ550, 1984-85 FJ600, 1986-88 FZ600, 1986-90 YX600 Radian, XJ650 Turbo, XJ700-X, XJ750-X, and all 1978-79 XS1100 models, each:
    $ 5.95

    HCP17583SET4 Aftermarket Mikuni brass starter plunger valve SPRINGS, set of 4:
    $ 19.95


    HCP17584 Aftermarket Mikuni brass starter plunger valve SPRING, fits all XJ900, XJ1100, and all 1980-81 XS1100 models, each:
    $ 5.95

    HCP17584SET4 Aftermarket Mikuni brass starter plunger valve SPRING, set of 4:
    $ 19.95



    Mikuni Starter - Enrichment (“Choke”) Circuit Shaft, Brackets, and Springs:

    Our re-plated Mikuni carb starter - enrichment (“choke”) circuit individual SHAFTS AND BRACKETS allow you to re-create the original look and beauty of these carb racks. These parts are available re-plated to their correct original silver- or yellow-zinc appearance. If you need to replace any missing hardware, or just want to create a show-winning look, then you should start your shopping list here! NOTE: all starter hardware pieces are re-plated, used parts, and as such, may have minor cosmetic flaws (tooling marks, fastener marks, etc.). Most such marks will not be visible once installed. Also, all re-plated items require a refundable core charge which will be credited back to you once you return a same-model, same-type of item(s) as you purchased. Since these are re-plated used parts, we do require an exchange for your original parts so we can have a steady supply of parts to be processed and re-plated for future sales.


    HCP5156RP OEM re-plated carb starter - enrichment (“choke”) circuit ACTUATING SHAFT, long round shaft that carries the choke plunger lifter “finger” brackets. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all BS28-series carbs as used on all XJ550 Maxim, Seca, and XJ550 Euro models. NOTE: requires a $ 20.00 core charge, refundable upon the return of an undamaged, same-model, same-type shaft.
    $ 29.95 + $ 20.00 refundable core charge

    HCP14203RP OEM re-plated carb starter - enrichment (“choke”) circuit ACTUATING SHAFT, long round shaft that carries the choke plunger lifter “finger” brackets. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all BS30-series carbs as used on all XJ650 Turbo models. NOTE: requires a $ 20.00 core charge, refundable upon the return of an undamaged, same-model, same-type shaft.
    $ 39.95 + $ 20.00 refundable core charge

    HCP17755RP OEM re-plated carb starter - enrichment (“choke”) circuit ACTUATING SHAFT, long round shaft that carries the choke plunger lifter “finger” brackets. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all BS33-series carbs as used on all water-cooled XJ700-X and XJ750-X models. NOTE: requires a $ 20.00 core charge, refundable upon the return of an undamaged, same-model, same-type shaft.
    $ 39.95 + $ 20.00 refundable core charge

    HCP17756RP OEM re-plated carb starter - enrichment (“choke”) circuit ACTUATING SHAFT, long round shaft that carries the choke plunger lifter “finger” brackets. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all BS35- and BS36-series carbs as used on XJ900 models and BS34 carbs used on XJ1100 models. NOTE: requires a $ 20.00 core charge, refundable upon the return of an undamaged, same-model, same-type shaft.
    $ 39.95 + $ 20.00 refundable core charge



    HCP5163RP-SET4 OEM re-plated carb starter - enrichment (“choke”) circuit PLUNGER LIFTER BRACKETS, set of 4 of the choke plunger-lifter “finger” brackets. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all BS28-series carbs as used on all XJ550 Maxim, Seca, and XJ550 Euro models. NOTE: requires a $ 20.00 core charge, refundable upon the return of an undamaged, same-model, same-type set of lifter brackets.
    $ 29.95 + $ 20.00 refundable core charge


    HCP14200RP OEM re-plated carb starter - enrichment (“choke”) circuit PLUNGER LIFTER BRACKET, these are the choke plunger-lifter “finger” brackets used on the #1 and #2 carbs. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all BS30-series carbs as used on all XJ650 Turbo, and on BS33-series carbs used on all water-cooled XJ700-X and XJ750-X models. Each. NOTE: requires a $ 15.00 core charge, refundable upon the return of an undamaged, same-model, same-type set of lifter bracket.
    $ 15.95 + $ 15.00 refundable core charge

    HCP14201RP OEM re-plated carb starter - enrichment (“choke”) circuit PLUNGER LIFTER BRACKET, this is the choke plunger-lifter “finger” brackets used on the #3 carb. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all BS30-series carbs as used on all XJ650 Turbo models. NOTE: requires a $ 15.00 core charge, refundable upon the return of an undamaged, same-model, same-type set of lifter bracket.
    $ 19.95 + $ 15.00 refundable core charge

    HCP16791RP OEM re-plated carb starter - enrichment (“choke”) circuit PLUNGER LIFTER BRACKET, this is the choke plunger-lifter “finger” brackets used on the #3 carb. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all BS33-series carbs used on all water-cooled XJ700-X and XJ750-X models. NOTE: requires a $ 15.00 core charge, refundable upon the return of an undamaged, same-model, same-type set of lifter bracket.
    $ 19.95 + $ 15.00 refundable core charge

    HCP14202RP OEM re-plated carb starter - enrichment (“choke”) circuit PLUNGER LIFTER BRACKET, this is the choke plunger-lifter “finger” brackets used on the #4 carb. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all BS30-series carbs as used on all XJ650 Turbo, and on BS33-series carbs used on all water-cooled XJ700-X and XJ750-X models. NOTE: requires a $ 15.00 core charge, refundable upon the return of an undamaged, same-model, same-type set of lifter bracket.
    $ 15.95 + $ 15.00 refundable core charge


    HCP16792RP-SET4 OEM re-plated carb starter - enrichment (“choke”) circuit PLUNGER LIFTER BRACKETS, set of 4 of the choke plunger-lifter “finger” brackets. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all BS35- and BS36-series carbs as used on XJ900 models and BS34 carbs used on XJ1100 models. NOTE: requires a $ 30.00 core charge, refundable upon the return of an undamaged, same-model, same-type set of lifter brackets.
    $ 39.95 + $ 30.00 refundable core charge

    HCP16794RP OEM re-plated carb starter - enrichment (“choke”) circuit SHAFT ACTUATOR BRACKET, this is the choke shaft actuator bracket used at the outer end of that shaft (next to the #4 carb). Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all BS35- and BS36-series carbs as used on XJ900 models and BS34 carbs used on XJ1100 models. NOTE: requires a $ 15.00 core charge, refundable upon the return of an undamaged, same-model, same-type set of bracket.
    $ 19.95 + $ 15.00 refundable core charge



    HCP5157RP OEM Mikuni starter/choke shaft RETURN SPRING, fits all XJ550 models. Beautiful bright silver-zinc plating brings the top side of these carbs to life. NOTE: requires a $ 15.00 core charge, refundable upon the return of an undamaged, same-model, same-type spring.
    $ 19.95 + $ 15.00 refundable core charge

    HCP22374 OEM Mikuni starter/choke shaft pull handle RETURN SPRING, fits all 1992-98 XJ600 Seca II models. Each:
    $ 11.95



    Mikuni Starter - Enrichment (“Choke”) Circuit Fasteners:

    xx4) Aftermarket Mikuni Starter-Enrichment Circuit Arm-to-Shaft SET SCREW. These replacement screws are used to retain the starter lever "finger" bracket to the starter circuit shaft. Use 1 per carb, 4 of these screws per rack on all XJ550, 1984-85 FJ600, 1992-98 XJ600 Seca II, XJ650 Turbo, XJ700-X, XJ750-X, and XJ900RK models. XJ1100 and XS1100 models use a total of 5 screws per rack.

    NOTE: originally, these screws were configured as follows:

    XJ550 all models used a panhead, phillips drive cone (pointed) tip set screw. This style screw is not currently available, and the HCP21375, HCP299, or HCP300 screws listed below are the recommended replacements.

    XJ650 Turbo, XJ900, XJ1100, and XS1100 models used a straight slot, cone (pointed) tip set screw. This style screw is the HCP21375 or HCP21376, and similar to the HCP299 and HCP300 screws listed below, with the main difference being that while the original screws used a straight blade slot, the HCP299 and HCP300 screws below employ a hex-drive.

    1984-85 FJ600, 1992-98 XJ600 Seca II, XJ700-X, and XJ750-X models used a panhead, phillips drive dog-point (blunt tip) set screw. This style screw is not currently available, although the HCP6828 screw below is very similar, with the main difference being that original screws used a phillips-drive head, while the replacement screws below employ a hex-drive.

    ALL models may use the HCP299, HCP300, HCP21375, HCP21376, or HCP6828 hex-drive set screws as a suitable replacement.



    HCP21376 Aftermarket Mikuni enrichment circuit lever arm-to-shaft SET SCREW, original straight-slot design, zinc-plated alloy steel. Slightly shorter than stock. Correct style for all XJ650 Turbo, XJ900, XJ1100, and XS1100 carbs, but will serve as suitable replacements for all XJ550, 1984-85 FJ600, 1992-98 XJ600 Seca II, XJ700-X, and XJ750-X models. Each:
    $ 1.95

    HCP21376SET4 Aftermarket Mikuni enrichment circuit lever arm-to-shaft SET SCREWS, set of 4:
    $ 7.50

    HCP21376SET5 Aftermarket Mikuni enrichment circuit lever arm-to-shaft SET SCREWS, set of 5:
    $ 8.95



    HCP21375 Aftermarket Mikuni enrichment circuit lever arm-to-shaft SET SCREW, original straight-slot design, 18-8 stainless steel. Slightly shorter than stock. Correct style for all XJ650 Turbo, XJ900, XJ1100, and XS1100 carbs, but will serve as suitable replacements for all XJ550, 1984-85 FJ600, 1992-98 XJ600 Seca II, XJ700-X, and XJ750-X models. Each:
    $ 1.95

    HCP21375SET4 Aftermarket Mikuni enrichment circuit lever arm-to-shaft SET SCREWS, set of 4:
    $ 7.50

    HCP21375SET5 Aftermarket Mikuni enrichment circuit lever arm-to-shaft SET SCREWS, set of 5:
    $ 8.95



    HCP299 Aftermarket Mikuni enrichment circuit lever arm-to-shaft cone-point SET SCREW, hex-key drive, black oxide coated alloy steel, slightly longer than stock. Correct style for all XJ650 Turbo, XJ900, XJ1100, and XS1100 carbs, but will serve as suitable replacements for all XJ550, 1984-85 FJ600, 1992-98 XJ600 Seca II, XJ700-X, and XJ750-X models. Each:
    $ 1.95

    HCP299SET4 Aftermarket Mikuni enrichment circuit lever arm-to-shaft SET SCREWS, set of 4:
    $ 6.95

    HCP299SET5 Aftermarket Mikuni enrichment circuit lever arm-to-shaft SET SCREWS, set of 5:
    $ 7.95



    HCP300 Aftermarket Mikuni enrichment circuit lever arm-to-shaft cone-point SET SCREW, hex-key drive, 18-8 stainless steel, slightly longer than stock. Correct style for all XJ650 Turbo, XJ900, XJ1100, and XS1100 carbs, but will serve as suitable replacements for all XJ550, 1984-85 FJ600, 1992-98 XJ600 Seca II, XJ700-X, and XJ750-X models. Each:
    $ 1.95

    HCP300SET4 Aftermarket Mikuni enrichment circuit lever arm-to-shaft SET SCREWS, set of 4:
    $ 6.95

    HCP300SET5 Aftermarket Mikuni enrichment circuit lever arm-to-shaft SET SCREWS, set of 5:
    $ 7.95



    HCP6828 Aftermarket Mikuni enrichment circuit lever arm-to-shaft blunt point SET SCREW, hex-key drive, 18-8 stainless steel, slightly longer than stock. Correct style for all 1984-85 FJ600, XJ700-X, and XJ750-X models, but will serve as suitable replacements for all XJ550, 1992-98 XJ600 Seca II, XJ650 Turbo, XJ900, XJ1100, and XS1100 models. Each:
    $ 2.95

    HCP6828SET4 Aftermarket Mikuni enrichment circuit lever arm-to-shaft SET SCREWS, set of 4:
    $ 10.95

    HCP6828SET5 Aftermarket Mikuni enrichment circuit lever arm-to-shaft SET SCREWS, set of 5:
    $ 12.95



    HCP4561 OEM Mikuni carb choke cable clamp bracket MOUNTING SCREW, alloy steel, panhead, phillips-drive. Secures the choke cable retaining clamp to the bracket located on the #1 carb hat. For use on all XJ550 models only, 1 per bike. Each.
    $ 2.95

    HCP911 Aftermarket Mikuni carb choke cable clamp bracket MOUNTING SCREW, zinc-plated alloy steel, panhead, phillips-drive. Secures the choke cable retaining clamp to the bracket located on the #1 carb hat. For use on all XJ550 models only, 1 per bike. Each:
    $ 1.95

    HCP1362 Aftermarket Mikuni carb choke cable clamp bracket MOUNTING SCREW, yellow cad-plated alloy steel, panhead, phillips-drive, with an integral lockwasher. Secures the choke cable retaining clamp to the bracket located on the #1 carb hat. For use on all XJ550 models only, 1 per bike. Each:
    $ 1.95

    HCP307 Aftermarket Mikuni carb choke cable clamp bracket MOUNTING SCREW, 18-8 stainless steel, panhead, phillips-drive. Secures the choke cable retaining clamp to the bracket located on the #1 carb hat. For use on all XJ550 models only, 1 per bike. Each:
    $ 1.50

    HCP24040 Aftermarket Mikuni carb choke cable clamp bracket MOUNTING SCREW, alloy steel, panhead, phillips-drive. Secures the choke cable retaining clamp to the bracket located on the #1 carb hat. For use on all XJ550 models only, 1 per bike. Each.
    $ 1.95

    HCP309 Aftermarket Mikuni carb choke cable clamp bracket MOUNTING SCREW, 18-8 stainless steel, button-head, hex-drive style. Secures the choke cable retaining clamp to the bracket located on the #1 carb hat. For use on all XJ550 models only, 1 per bike. Each:
    $ 1.00

    HCP311 Aftermarket Mikuni carb choke cable clamp bracket MOUNTING SCREW, 18-8 stainless steel, socket-head, hex-drive style. Secures the choke cable retaining clamp to the bracket located on the #1 carb hat. For use on all XJ550 models only, 1 per bike. Each:
    $ 1.00

    HCP312 Aftermarket Mikuni carb choke cable clamp bracket MOUNTING SCREW, black oxide-coated steel, socket-head, hex-drive style. Secures the choke cable retaining clamp to the bracket located on the #1 carb hat. For use on all XJ550 models only, 1 per bike. Each:
    $ 1.50



    HCP55 OEM Mikuni carb choke cable clamp bracket screw LOCK WASHER, zinc-plated alloy steel. For use on all XJ550 models only, Use 1 per bike, each:
    $ 1.95

    HCP913 Aftermarket Mikuni carb choke cable clamp bracket screw LOCK WASHER, zinc-plated alloy steel. For use on all XJ550 models only, 1 per bike, each.
    $ 1.00

    HCP57 Aftermarket Mikuni carb choke cable clamp bracket screw LOCK WASHER, 18-8 stainless steel. For use on all XJ550 models only, 1 per bike, each.
    $ 1.00

    HCP59 Aftermarket Mikuni carb choke cable clamp bracket screw LOCK WASHER, black oxide coated alloy steel. For use on all XJ550 models only, 1 per bike, each.
    $ 1.00



    MIKUNI CARB FUEL SUPPLY AND BOWL OVERFLOW T-FITTINGS, CONNECTOR TUBES, AND O-RINGS:

    mtz1) OEM and aftermarket Mikuni fuel inlet T-FITTING AND CONNECTOR SUPPLY TUBES. The swiveling plastic t-fitting is used as the intake port from the petcock and "splits" the fuel flow to the left and right sides of the carb banks, while the aluminum fuel connector pipes are used to connect the outer carbs to the center carbs for incoming fuel supply. The original inlet T-fitting was made of a plastic-coated aluminum, and was equipped with built in anti-leak "ribs" where they enter the carb bodies, while the aluminum connector tubes use separate o-rings (listed further below) to provide a leak-proof connection into the carb bodies.

    Our aftermarket replacement T-fittings are made from brass, and have machined grooves to accept actual rubber o-rings, making them re-usable forever.


    HCP5166 OEM plastic-coated aluminum fuel inlet T-FITTING, use 1 on all XJ550, 1986-88 FZ600, and 1986-90 YX600 Radian models, in-between the #2 and #3 carbs.
    $ 64.95

    HCP9865 OEM plastic-coated aluminum fuel inlet T-FITTING, use 1 on all 1984-85 FJ600, XJ700-X, and XJ750-X models, in-between the #2 and #3 carbs, use 2 on all 1979 XS1100 for the fuel inlets between the #1 and #2 carbs and also between the #3 and #4 carbs, and use 2 on all 1977-79 XS750 carbs for the fuel inlets between the #1/2 carbs and the #2/3 carb. Each:
    $ 69.95


    HCP22372 OEM plastic fuel inlet T-FITTING, use 1 on all 1992-98 XJ600 Seca II models, in-between the #2 and #3 carbs. Does not include the rubber “sleeve” seals on each side arm (into the carb body).
    $ 59.95


    HCP16282 Aftermarket brass fuel inlet T-FITTING, for use on all XJ550, 1984-85 FJ600, 1984-86 XJ600 Euro, 1986-88 FZ600, 1986-90 YX600 Radian, XJ700-X, XJ750-X, XJ900RK and RL models (BS35 series carbs), 1977-79 XS750, 1980-81 XS1100, and XJ1100 models. Includes the sealing o-rings. These solid brass tee's use dual o-rings (included) on each "leg" and thus fit and seal much better than the original plastic-over-aluminum t-fittings. Use 1 per carb rack on all models except for the XS750, XS1100, and XJ1100 models, which have the following applications: 1977-79 XS750 all models, use 2 per rack. 1978-79 XS1100, use 4 per rack (2 as fuel inlets and 2 as bowl overflows). 1982-84 XJ1100 models: use 2 per rack as fuel inlet fittings. NOTE: if replacements are ever needed, use o-ring HCP3458 or HCP6880 on these fittings. Each:
    $ 29.95

    HCP16283 Aftermarket brass fuel inlet T-FITTING, for use on all XJ900 F, FN, and N models (BS36 series carbs), and all 1978-79 XS1100 models. Includes the sealing o-rings. These solid brass tee's use dual o-rings (included) on each "leg" and thus fit and seal much better than the original plastic-over-aluminum t-fittings. Use 1 per carb rack. NOTE: if replacements are ever needed, use o-ring HCP3458 or HCP6880 on these fittings. Each:
    $ 39.95



    HCP5165 OEM aluminum fuel SUPPLY TUBE, use 1 each on all XJ550 models in-between the #1/2 and the #3/4 carbs. Includes the sealing o-rings. NOTE: if replacements are ever needed, use o-ring HCP3458 or HCP6880 on these fittings. Each:
    $ 59.95

    HCP28462 Aftermarket brass fuel SUPPLY TUBE, use 1 each on all XJ550, 1986-90 YX600 Radian, and 1986-88 FZ600 models in-between the #1/2 and the #3/4 carbs. Sealing o-rings are NOT included, use 4 of part HCP3458 or HCP6880. Each:
    $ 21.95


    HCP9863 OEM aluminum fuel CONNECTOR TUBE, use 2 each on all 1984-85 FJ600 carbs between the #1/2 and #3/4 carbs. Includes the sealing o-rings. NOTE: if replacements are ever needed, use o-ring HCP3458 or HCP6880 on these fittings. Each:
    $ discontinued

    HCP28464 Aftermarket brass fuel SUPPLY TUBE, use 2 each on all 1984-85 FJ600 carbs between the #1/2 and #3/4 carbs. Sealing o-rings are NOT included, use 4 of part HCP3458 or HCP6880. Each:
    $ 22.95


    HCP22371 OEM fuel SUPPLY TUBE, use 1 each on all 1992-98 XJ600 Seca II models in-between the #1/2 and the #3/4 carbs. Does not include the HCP22388 rubber “sleeve” seals on each side arm (into the carb body). Each:
    $ 32.95


    HCP5239 OEM aluminum fuel SUPPLY TUBE, use 2 on all XJ650 Turbo, XJ700-X and XJ750-X models, and XJ900RK and RL models (BS35 series carbs), between the #1/2 and #3/4 carbs. Use 1 per carb on all XJ900 F, FN, and N models (BS36 series carbs). Sealing o-rings are included. NOTE: if replacements are ever needed, use o-ring HCP3458 or HCP6880 on these fittings. Each:
    $ 39.95

    HCP28463 Aftermarket brass fuel SUPPLY TUBE, use 2 on all XJ650 Turbo, XJ700-X and XJ750-X models, and XJ900RK and RL models (BS35 series carbs), between the #1/2 and #3/4 carbs. Use 1 per carb on all XJ900 F, FN, and N models (BS36 series carbs). Sealing o-rings are NOT included, use 4 of part HCP3458 or HCP6880. Each:
    $ 21.95


    HCP9864 OEM aluminum fuel SUPPLY TUBE, use 1 on all XJ900RK and RL models (BS35 series carbs), between the #2/3 carbs. Includes the sealing o-rings. NOTE: if replacements are ever needed, use o-ring HCP3458 or HCP6880 on these fittings. Each:
    $ 39.95

    HCP28465 Aftermarket brass fuel SUPPLY TUBE, use 1 on all XJ900RK and RL models, between the #2/3 carbs. Sealing o-rings are NOT included, use 4 of part HCP3458 or HCP6880. Each:
    $ 22.95



    HCP9869 OEM aluminum fuel SUPPLY TUBE, use 1 each on all XJ900RK and RL models (BS35 series carbs) between the #3/4 carbs. Sealing o-rings are included. NOTE: if replacements are ever needed, use o-ring HCP3458 or HCP6880 on these fittings. Each:
    $ discontinued

    HCP28461 Aftermarket brass fuel SUPPLY TUBE , use 1 each on all XJ900RK and RL models (BS35 series carbs) between the #3/4 carbs. Sealing o-rings are NOT included, use 4 of part HCP3458 or HCP6880. Each:
    $ 21.95



    HCP9866 OEM plastic fuel bowl vent/overflow T-FITTING, used on all 1986-88 FZ600, 1986-90 YX600 Radian, XJ700-X and XJ750-X models between both the #1/2 and #3/4 carbs. Sealing o-rings are NOT included, use 2 of part HCP3458 or HCP6880. Each:
    $ 34.95

    HCP9867 OEM plastic fuel bowl vent/overflow T-FITTING, use on all XJ900RK, RL, N/FN, and F models (BS36 series carbs) between both the #1/2 and #3/4 carbs. Sealing o-rings are NOT included, use 2 of part HCP3458 or HCP6880. Each:
    $ 29.95

    HCP16284 Aftermarket brass fuel bowl vent/overflow T-FITTING, used on all 1986-88 FZ600, 1986-90 YX600 Radian, XJ700-X, XJ750-X, and on all XJ900RK, RL, N, FN, and F models between both the #1/2 and #3/4 carbs. Includes the sealing o-rings. These brass tee's fit and seal much better than the original plastic fittings. NOTE: if replacements are ever needed, use o-ring HCP16278 on these fittings. Each:
    $ 29.95


    HCP9864 OEM aluminum fuel bowl vent/overflow CONNECTOR TUBE, use 1 each on all XJ650 Turbo models between the #2/3 carbs. Includes the sealing o-rings. NOTE: if replacements are ever needed, use o-ring HCP3458 or HCP6880 on these fittings. Each:
    $ 39.95

    HCP28465 Aftermarket brass fuel bowl vent/overflow CONNECTOR TUBE, use 1 each on all XJ650 Turbo models between the #2/3 carbs. Sealing o-rings are NOT included, use 4 of part HCP3458 or HCP6880. Each:
    $ 22.95


    HCP9863 OEM aluminum fuel bowl vent/overflow aluminum CONNECTOR TUBE, use 2 each on all XJ650 Turbo models between the #1/2 and #3/4 carbs. Includes the sealing o-rings. NOTE: if replacements are ever needed, use o-ring HCP3458 or HCP6880 on these fittings. Each:
    $ discontinued

    HCP28464 Aftermarket brass fuel bowl vent/overflow brass CONNECTOR TUBE, use 2 each on all XJ650 Turbo models between the #1/2 and #3/4 carbs. Sealing o-rings are NOT included, use 4 of part HCP3458 or HCP6880. Each:
    $ 22.95



    mmm1) OEM and aftermarket Mikuni fuel supply tube O-RING.....all fours carbs share a common fuel supply (except on XJ1100 models), and this fuel supply is distributed to each carb via either plastic, brass or aluminum tubes and T-fittings that connects one carb to another. These tubes fits into a machined bores in the carb base, and the tubes are sealed in their bores with these rubber o-rings. Additionally, XJ650 Turbo and XJ700-X and XJ750-X models also used bowl vent connectors (plastic T-fittings) that also used o-rings. NOTE: original seals were "D-rings" rather than "O-rings", but are now serviced only as o-rings, but are the correct shape and firmness to provide a leak-proof fit. You will only be able to access these seals if you break the carbs out of their rack! (and if you do break the rack, you need to replace these seals).

    NOTE: on all Mikuni model carbs, the fuel inlet T-fitting does NOT use any o-rings.....it has a thick rubberized "skin" with molded-in "ribs" which the place of real o-rings for the purpose of sealing the t-fitting to the carb body. To be honest, like many of you have commented, I don't understand why the factory choose to use this design rather than traditional o-rings on a metal fitting, but......I'm not a fuel line engineer!


    - Use 4 seals per fuel connector pipe in-between carbs 1&2 and 3&4, or a total of 8 seals per entire carb rack, for Mikuni carbs used on all XJ550 and 1986-88 FZ600 models. NOTE: the plastic fuel inlet "T" fitting does not use o-rings.

    - Use 2 sleeve seals per fuel connector pipe in-between carbs 1&2 and 3&4, and 2 sleeve seals on the fuel inlet t-fitting between carbs 2/3, for a total of 6 seals per entire carb rack, for Mikuni carbs used on all 1992-98 XJ600 Seca II models.

    - Use 4 seals per fuel connector pipe in-between carbs 1&2 and 3&4, and use 4 seals per bowl overflow connector pipes, for a total of 20 seals per entire carb rack, on the Mikuni carbs used on all XJ650 Turbo models. NOTE: the plastic fuel inlet "T" fitting does not use o-rings.

    - Use 4 seals per fuel connector pipe in-between carbs 1 & 2 and in-between 3 & 4, and use 2 seals on each bowl overflow "T" connector pipes, or a total of 12 seals per entire carb rack, for Mikuni carbs used on all 1984-85 FJ600, 1986-90 YX600 Radian, XJ700-X, XJ750-X, and XJ900RK, RL, N/FN, and F models, and 1984-85 FJ1100 and 1986-8 FJ1200 models. NOTE: the plastic fuel inlet "T" fitting does not use o-rings, and the bowl overflow plastic T-connectors actually use a slightly larger o-ring. However, these o-rings will fit the bowl-overflow T-fittings, although they will result in a slightly more loose fitting pipe in the carb bores. Since these bowl overflow T-connectors don't actually carry fluid---they normally just vent fuel vapors---the slightly looser fit is not an issue.

    - In case you're wondering, XS1100 and XJ1100 models used two plastic T-fittings for fuel inlet supply, and those fittings do NOT use any o-rings. There are no bowl vent connector tubes on 1100's, so there are no o-rings used at all on 1100 models!


    NOTE: make sure you clean the internal bore cavity (where the fuel pipes fit into the carb body) very well, as that cavity accumulates quite a bit of debris and hardened fuel remnants over the years. Our HCP1409SS bristle-wire brush is the perfect tool for this job:

    HCP1409SS Aftermarket STAINLESS STEEL WIRE-BRISTLE CLEANING BRUSH, 9.5mm diameter, great for the float valve seat threaded bore in all Mikuni carb bodies, and the fuel supply pipe bores within the carb body.
    $ 6.95


    Also, make sure that you do not "pinch" the o-rings as the tube is being inserted into the bores; some silicone grease or dish-washing soap on the o-rings will help avoid that problem.


    for all Mikuni carbs except 1992-98 XJ600 Seca II models:

    HCP3458 OEM Mikuni fuel supply tube O-RING, each:
    $ 6.95

    HCP3458SET8 OEM Mikuni fuel supply tube O-RINGS, set of 8:
    $ 52.95

    HCP3458SET12 OEM Mikuni fuel supply tube O-RINGS, set of 12:
    $ 74.95

    HCP3458SET20 OEM Mikuni fuel supply tube O-RINGS, set of 20:
    $ 119.95



    HCP6880 Aftermarket Mikuni fuel supply tube O-RING, made from a durable Buna-N rubber material, fits just like the originals at a much better price. Each:
    $ 4.95

    HCP6880SET8 Aftermarket Mikuni fuel supply tube O-RINGS, set of 8:
    $ 27.95

    HCP6880SET12 Aftermarket Mikuni fuel supply tube O-RINGS, set of 12:
    $ 39.95

    HCP6880SET20 Aftermarket Mikuni fuel supply tube O-RINGS, set of 20:
    $ 49.95



    HCP16278SET4 Aftermarket Mikuni bowl overflow t-fitting O-RINGS, for use with the HCP16284 aftermarket brass fitting only. Set of 4
    $ 6.95



    for all 1992-98 XJ600 Seca II model carbs:

    HCP22388 OEM Mikuni fuel inlet t-fitting or fuel supply tube RUBBER SLEEVE SEAL, each:
    $ 9.95

    HCP22388SET6 OEM Mikuni fuel inlet t-fitting or fuel supply tube RUBBER SLEEVE SEALS, set of 6:
    $ 57.95
     
    Last edited: Oct 23, 2021
  8. chacal

    chacal Moderator Moderator Supporting Vendor Premium Member

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    MIKUNI CARB VACUUM DIAPHRAM AND PISTON UNITS:

    fs6) OEM and aftermarket Mikuni carb VACUUM DIAPHRAM AND PISTON ASSEMBLY, the slide piston with the non-detachable rubber vacuum diaphram seal. Although it is possible to repair thin spots and TINY pin-holes that occur in original diaphragms , anything greater than that will require replacement, as these diaphram are under a lot of pressure and stress and the continued flexing of the rubber will eventually lead to failure.

    The long slinky SPRING provides the proper pressure and resistance to the movement of the piston unit under a variety of vacuum signal conditions, and modified, stretched, or damaged springs should be replaced. Ideally, all fours springs should be replaced all at once to insure equal response from each vacuum piston.


    HCP5174 OEM Mikuni VACUUM DIAPHRAM AND PISTON ASSEMBLY, fits all XJ550 models, each:
    $ 259.95

    HCP5174SET4 OEM Mikuni VACUUM DIAPHRAM AND PISTON ASSEMBLIES, set of 4:
    $ 959.95


    HCP22696 Aftermarket Mikuni VACUUM DIAPHRAM AND PISTON ASSEMBLIES, fits all XJ550 models. NOTE: this reproduction piston weighs almost 2-grams less than the original piston. Thus it is strongly, highly recommended that all 4 original piston units be replaced at one time; otherwise, performance and tuning issues due to the mix-and-match of original pistons and these pistons may result. Each:
    $ 59.95

    HCP22696SET4 Aftermarket Mikuni VACUUM DIAPHRAM AND PISTON ASSEMBLIES, set of 4:
    $ 219.95



    HCP5173 OEM Mikuni vacuum piston SPRING, fits all XJ550, 1986-88 FZ600, and 1986-90 YX600 Radian models, each:
    $ discontinued

    HCP5173SET4 OEM Mikuni vacuum piston SPRINGS, set of 4:
    $ discontinued


    HCP19360 Aftermarket Mikuni vacuum piston SPRING, fits all XJ550, 1986-88 FZ600, and 1986-90 YX600 Radian models, each:
    $ 14.95

    HCP19360SET4 Aftermarket Mikuni vacuum piston SPRINGS, set of 4:
    $ 57.95



    HCP19361 Aftermarket Mikuni vacuum piston SPRING, fits all XJ650 Turbo models, each:
    $ 14.95

    HCP19361SET4 Aftermarket Mikuni vacuum piston SPRINGS, set of 4:
    $ 57.95




    HCP19589 OEM Mikuni VACUUM DIAPHRAM AND PISTON ASSEMBLY, fits all 1984-85 FJ600 models, each:
    $ 329.95

    HCP19859SET4 OEM Mikuni VACUUM DIAPHRAM AND PISTON ASSEMBLIES, set of 4:
    $ 1089.95


    HCP7118 OEM Mikuni VACUUM DIAPHRAM AND PISTON ASSEMBLY, fits all XJ700-X and XJ750-X models, each:
    $ 259.95

    HCP7118SET4 OEM Mikuni VACUUM DIAPHRAM AND PISTON ASSEMBLIES, set of 4:
    $ 959.95



    HCP9888 OEM Mikuni vacuum piston SPRING, fits all 1984-85 FJ600, all XJ700-X, and XJ750-X models, each:
    $ discontinued

    HCP9888SET4 OEM Mikuni vacuum piston SPRINGS, set of 4:
    $ discontinued


    HCP19362 Aftermarket Mikuni vacuum piston SPRING, fits all 1984-85 FJ600, all XJ700-X, and XJ750-X models, each:
    $ 14.95

    HCP19362SET4 Aftermarket Mikuni vacuum piston SPRINGS, set of 4:
    $ 57.95



    HCP22368 OEM Mikuni VACUUM DIAPHRAM AND PISTON ASSEMBLY, fits all 1992-98 XJ600 Seca II North American models only, each:
    $ 169.95

    HCP22368SET4 OEM Mikuni VACUUM DIAPHRAM AND PISTON ASSEMBLIES, set of 4:
    $ 649.95


    HCP22681 Aftermarket Mikuni VACUUM DIAPHRAM AND PISTON ASSEMBLY, fits all 1992-98 XJ600 Seca II European models only, each:
    $ 59.95

    HCP22681SET4 Aftermarket Mikuni VACUUM DIAPHRAM AND PISTON ASSEMBLIES, set of 4:
    $ 229.95


    HCP22369 OEM Mikuni vacuum piston SPRING,fits all 1992-98 XJ600 Seca II North American models only, each:
    $ 18.95

    HCP22369SET4 OEM Mikuni vacuum piston SPRINGS, set of 4:
    $ 74.95




    HCP25382 OEM Mikuni VACUUM DIAPHRAM AND PISTON ASSEMBLY, fits all XJ900RK, XJ900RL, XJ900N with BS35 or BS36 series carbs, XJ1100, and all 1980-81 XS1100 models. NOTE: this piston is a superseded original, and features additional air bleed holes that are not present on the original piston, which will change it rise-and-fall characteristics slightly. Thus it is strongly, highly recommended that all 4 original piston units be replaced at one time; otherwise, performance and tuning issues due to the mix-and-match of original pistons and these pistons will result. Each:
    $ 179.95

    HCP25382SET4 OEM Mikuni VACUUM DIAPHRAM AND PISTON ASSEMBLIES, set of 4:
    $ 679.95


    HCP1667 Aftermarket Mikuni VACUUM DIAPHRAM AND PISTON ASSEMBLY, fits all XJ900RK, XJ900RL, XJ900N with BS35 series carbs, XJ1100, and all 1980-81 XS1100 models. NOTE: this piston is a superseded original, and features additional air bleed holes that are not present on the original piston, which will change it rise-and-fall characteristics slightly. Thus it is strongly, highly recommended that all 4 original piston units be replaced at one time; otherwise, performance and tuning issues due to the mix-and-match of original pistons and these pistons will result. Each:
    $ 69.95

    HCP1667SET4 Aftermarket Mikuni VACUUM DIAPHRAM AND PISTON ASSEMBLIES, set of 4:
    $ 219.95



    HCP9889 OEM Mikuni vacuum piston SPRING, fits all XJ900RK, XJ900RL, XJ900N with BS35 or BS36 series carbs, each:
    $ 34.95

    HCP9889SET4 OEM Mikuni vacuum piston SPRINGS, set of 4:
    $ 124.95


    HCP19363 Aftermarket Mikuni vacuum piston SPRING, fits all XJ900RK, XJ900RL, XJ900N with BS35 or BS36 series carbs, each:
    $ 19.95

    HCP19363SET4 Aftermarket Mikuni vacuum piston SPRINGS, set of 4:
    $ 74.95



    HCP9890 OEM Mikuni vacuum piston SPRING, fits XJ1100 and all 1980-81 XS1100 models, each:
    $ discontinued

    HCP9890SET4 OEM Mikuni vacuum piston SPRINGS, set of 4:
    $ discontinued


    HCP19364 Aftermarket Mikuni vacuum piston SPRING, fits all XJ1100 and all 1980-81 XS1100 models, each:
    $ 14.95

    HCP19364SET4 Aftermarket Mikuni vacuum piston SPRINGS, set of 4:
    $ 57.95



    NOTE: the following product(s) can only be shipped via ground transport (which thus eliminates the postal Priority Mail, postal Express Mail, or private carrier Expedited levels of service for this item) and cannot (and will not----don't even ask!) be shipped outside of the continental USA. Additionally, there may be a per-package weight or quantity restriction, and thus multiple-unit orders of this product may have to be shipped in separate packages and will incur additional shipping charges.

    HCP8540 Aftermarket carb diaphram rubber RnR FLUID. Dissolved and chlorinated paraffin wax is the best (and perhaps the only) way to safely bring some life back into stiff, worn rubber material... such as that found in those all-important carb piston diaphragms. Years of hard life inside of your carb take their toll, and whenever your carb is apart for service, and generous application of this product will help to clean, maintain, and restore the flexibility, while prolonging their usable service life. 10cc dripper bottle contains enough fluid to do about eight diaphragms. Simple to use, spread on, wait a few minutes, wipe off, repeat and you're done!
    $ 9.95




    fms76) Aftermarket Mikuni carb vacuum piston DIAPHRAM ONLY allows you to salvage your original pistons by replacing the rubber diaphragm. NOTE: the use of the any of the following vacuum diaphrams will require you to remove both the upper and lower plastic diaphragm “cinch” rings (with wire cutters, etc.) and carefully slide these new diaphrams over the top lip of piston and onto the “neck” of the piston (where those cinch rings used to sit). The diaphragm is held in place entirely by a tight friction fit. Installation instructions are included. These are a decent solution when you have missing, damaged, or leaky vac pistons diaphrams. NOTE: it is strongly suggested that all four original diaphrams are replaced (even if only one or two in your carb set are bad), as these new diaphrams will not provide exactly the same vacuum-regulated response as old, original diaphrams.


    HCP25373 Aftermarket Mikuni BS28 series carbs VACUUM PISTON DIAPHRAM ONLY, fits all XJ550 models. This is the rubber diaphram only, please see the NOTE above in regards to the installation and use of this product. Each:
    $ 24.95

    HCP25373SET4 Aftermarket Mikuni VACUUM PISTON DIAPHRAMS ONLY, set of 4:
    $ 89.95



    HCP25374 Aftermarket Mikuni BS30 series carbs VACUUM PISTON DIAPHRAM ONLY, fits all XJ650 Turbo models. This is the rubber diaphram only, please see the NOTE above in regards to the installation and use of this product. Each:
    $ 24.95

    HCP25374SET4 Aftermarket Mikuni VACUUM PISTON DIAPHRAMS ONLY, set of 4:
    $ 89.95



    HCP17539 Aftermarket Mikuni BS33/34 series carbs VACUUM PISTON DIAPHRAM ONLY, fits all 1984-85 FJ600, all water-cooled XJ700-X and XJ750-X models, and some XS1100 which have a 70mm OD seal groove in the carb body. This is the rubber diaphram only, please see the NOTE above in regards to the installation and use of this product. Each:
    $ 24.95

    HCP17539SET4 Aftermarket Mikuni VACUUM PISTON DIAPHRAMS ONLY, set of 4:
    $ 89.95



    HCP17540 Aftermarket Mikuni BS34, BS35, and BS36 series carbs VACUUM PISTON DIAPHRAM ONLY, fits all XJ900RK, RL, F, N, and FN models, XJ1100, and some XS1100 models which have a 73mm OD seal groove in the carb body. This is the rubber diaphram only, please see the NOTE above in regards to the installation and use of this product. NOTE: XS1100 owners must measure the seal groove in the carb body (the outer diameter of the recessed groove that the diaphragm fits into) to confirm whether it is 70mm, 73mm, or 77mm O.D……..it could have been either size. Each:
    $ 24.95

    HCP17540SET4 Aftermarket Mikuni VACUUM PISTON DIAPHRAMS ONLY, set of 4:
    $ 89.95



    HCP17546 Aftermarket Mikuni BS34, BS35, and BS36 series carbs VACUUM PISTON DIAPHRAM ONLY, fits some XS1100 models which have a 77mm OD seal groove in the carb body. This is the rubber diaphram only, please see the NOTE above in regards to the installation and use of this product. NOTE: XS1100 owners must measure the seal groove in the carb body (the outer diameter of the recessed groove that the diaphragm fits into) to confirm whether it is 70mm, 73mm, or 77mm O.D……..it could have been either size. Each:
    $ 24.95

    HCP17546SET4 Aftermarket Mikuni VACUUM PISTON DIAPHRAMS ONLY, set of 4:
    $ 89.95



    NOTE: our experience with the use of the HCP17352 vacuum diaphram below has been less than satisfactory......not because of any quality issue with the product itself (it's great), but simply because there is no easy way to install these new diaphrams onto an old vacuum piston.

    The original piston had the lower plastic retaining ring installed, then the diaphram on top of it, and then an upper plastic retaining ring.

    The top "lip" of the vacuum piston was forcibly (under great mechanical pressure) swaged down over the top of the upper plastic wing, thus "sandwiching" the diaphram firmly in-between the upper and lower plastic retaining rings.

    Since you cannot "un-swage" the top of a used piston in order to remove the top plastic retaining ring (and thus the diaphram), the only way to remove the old diaphram and install a new one is to cut (!) the top plastic retaining ring carefully, remove it, remove the old diaphram, and then install the new diaphram. You will then carefully have to set and super-glue the upper retaining ring back together.

    This method, if performed correctly, will work and result in a piston that performs well, or it may be a dismal failure (immediately or after a period of time). We've never done any long-term evaluations of a piston unit after such a procedure was performed, but one small mistake and you'll likely encounter all sorts of performance and tuning difficulties.

    HCP17352 Aftermarket Mikuni VACUUM PISTON DIAPHRAM ONLY, fits all XJ900RK, XJ900RL, XJ900N with BS35 series carbs, XJ1100, and all XS1100 models. This is the rubber diaphram only, please see the NOTE further baove in regards to the installation and use of this product. Each:
    $ 34.95

    HCP17352SET4 Aftermarket Mikuni VACUUM PISTON DIAPHRAM ONLY, set of 4:
    $ 99.95




    fms16) OEM and aftermarket Mikuni carb vacuum diaphram-piston assembly SPRING SEAT. This flat metal disc fits into the bottom of the vacuum diaphram and serves as a lower seat for the diaphram spring, and also retains the main jet needle within the diaphram piston unit.

    HCP9906 OEM vacuum diaphram SPRING SEAT, fits all 1985-85 FJ600, XJ700-X, XJ750-X, XJ900, XJ1100 and 1980-81 XS1100 models.
    $ 6.95




    fms7) OEM and aftermarket Mikuni carb vacuum diaphram-piston assembly spring seat MOUNTING SCREWS, panhead phillips-drive screws secures the round spring seat plate to the bottom of the diaphram assembly. Fits all XJ550, XJ650 Turbo, XJ700-X, XJ750-X, all XJ900RK, RL, N/FN, and F models, XJ1100, and all 1980-81 XS1100 models. NOTE: the original screws on XJ550 and XJ650 Turbo models did NOT use a lockwasher; all others did use integral lock washers. Replacement screws listed below do not have integral lockwashers, and they can be ordered separate below. Use 2 per carb.


    HCP104 OEM Mikuni carb vacuum piston spring seat MOUNTING SCREW, yellow zinc-plated alloy steel, panhead, phillips-drive screw, each:
    $ 2.95

    HCP104SET2 OEM Mikuni carb vacuum piston spring seat MOUNTING SCREWS, yellow zinc-plated alloy steel, panhead, phillips-drive screw, set of 2:
    $ 5.75

    HCP104SET8 OEM Mikuni carb vacuum piston spring seat MOUNTING SCREWS, yellow zinc-plated alloy steel, panhead, phillips-drive screw, set of 8:
    $ 9.95



    HCP2907 Aftermarket Mikuni carb vacuum piston spring seat MOUNTING SCREW, zinc-plated alloy steel, panhead, phillips-drive screw, each:
    $ 1.50

    HCP2907SET2 Aftermarket Mikuni carb vacuum piston spring seat MOUNTING SCREWS, zinc-plated alloy steel, panhead, phillips-drive screw, set of 2:
    $ 2.75

    HCP2907SET8 Aftermarket Mikuni carb vacuum piston spring seat MOUNTING SCREWS, zinc-plated alloy steel, panhead, phillips-drive screw, set of 8:
    $ 9.95



    HCP105 Aftermarket Mikuni carb vacuum piston spring seat MOUNTING SCREW, 18-8 bright stainless steel, panhead, phillips-drive screw, each:
    $ 2.50

    HCP105SET2 Aftermarket Mikuni carb vacuum piston spring seat MOUNTING SCREWS, 18-8 bright stainless steel, panhead, phillips-drive screw, set of 2:
    $ 4.50

    HCP105SET8 Aftermarket Mikuni carb vacuum piston spring seat MOUNTING SCREWS, 18-8 bright stainless steel, panhead, phillips-drive screw, set of 8:
    $ 16.95



    HCP2908 Aftermarket Mikuni carb vacuum piston spring seat MOUNTING SCREW, black oxide coated alloy steel, panhead, phillips-drive screw, each:
    $ 1.50

    HCP2908SET2 Aftermarket Mikuni carb vacuum piston spring seat MOUNTING SCREWS, black oxide coated alloy steel, panhead, phillips-drive screw, set of 2:
    $ 2.75

    HCP2908SET8 Aftermarket Mikuni carb vacuum piston spring seat MOUNTING SCREWS, black oxide coated alloy steel, panhead, phillips-drive screw, set of 8:
    $ 9.95



    HCP297 Aftermarket Mikuni carb vacuum piston spring seat screw LOCK WASHER, 18-8 stainless steel, each:
    $ 0.95

    HCP297SET2 Aftermarket Mikuni carb vacuum piston spring seat screw LOCK WASHERS, 18-8 stainless steel, set of 2:
    $ 1.75

    HCP297ET8 Aftermarket Mikuni carb vacuum piston spring seat screw LOCK WASHERS, 18-8 stainless steel, set of 8:
    $ 6.50




    HCP297 Aftermarket Mikuni carb vacuum piston spring seat screw LOCK WASHER, 18-8 stainless steel, each:
    $ 0.95

    HCP297SET2 Aftermarket Mikuni carb vacuum piston spring seat screw LOCK WASHERS, 18-8 stainless steel, set of 2:
    $ 1.75

    HCP297SET8 Aftermarket Mikuni carb vacuum piston spring seat screw LOCK WASHERS, 18-8 stainless steel, set of 8:
    $ 6.50





    MIKUNI CARBS HATS:

    Mikuni Carb Hats:

    Reproduction Mikuni CARB DIAPHRAM COVERS, commonly called carb "hats", are the bright upper covers with the "round dome" shape. Brand new stampings perfectly replace rusted and pitted originals, add a final "crowning" touch to your carb restoration project.


    HCP9160 Aftermarket Mikuni POLISHED SILVER CHROME CARB HAT, mirror finish as used on the outboard carbs (#1 and #4) on all XJ550 models. NOTE: can be used on all fours carbs for a more decorative appearance. Each:
    $ 32.95

    HCP9160SET2 Aftermarket Mikuni POLISHED SILVER CHROME CARB HATS, set of 2:
    $ 54.95

    HCP9160SET4 Aftermarket Mikuni POLISHED SILVER CHROME CARB HATS, set of 4:
    $ 89.95



    HCP9161 Aftermarket Mikuni NATURAL ZINC-PLATED CARB HAT, dull silver finish as used on the inner carbs only (#2 and #3) on all XJ550 models. Each:
    $ 27.95

    HCP9161SET2 Aftermarket Mikuni NATURAL ZINC-PLATED CARB HAT, set of 2:
    $ 47.95



    HCP91601SET Complete set of 4 carb hats, contains two of the HCP9160 polished chrome hats, and two of the HCP9161 zinc-plated hats. This combination of covers is correct for the following models: all XJ550 models.
    $ 89.95




    HCP10010 Aftermarket Mikuni POLISHED GOLDEN CHROME CARB HAT, golden mirror finish. Fits all XJ550 models. NOTE: golden-chrome hats were never used originally on these models, but these are an attractive upgrade that have the same finish as was used on many of the "Midnight Maxim" models. Each:
    $ 39.95

    HCP10010SET2 Aftermarket Mikuni POLISHED GOLDEN CHROME CARB HATS, set of 2:
    $ 59.95

    HCP10010SET4 Aftermarket Mikuni POLISHED GOLDEN CHROME CARB HATS, set of 4:
    $ 99.95




    HCP26819-RP OEM Mikuni RE-PLATED POLISHED GOLDEN-CHROME CARB HAT, golden mirror finish as used on all fours carbs on all XS1100 Midnight Special and 1983-84 XJ1100 Midnight Maxim models. Will fit all 1980-81 XS1100 and 1982 XJ1100 Maxim model carbs well as 1980-82 SR250, 1980-81 XS400, and 1982-83 XS650 Special carb sets. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model carb hat; “undamaged” means no dents, dings, rust pits (top side), etc. Since these are re-plated used parts, we do require an exchange for your original parts so we can have a steady supply of parts to be processed and re-plated for future sales. These are used original parts, and as such, may have minor cosmetic flaws (tooling marks, fastener marks, etc.). Most such marks will not be visible once installed. Each:
    $ 59.95 + refundable $ 25.00 core charge

    HCP26819SET4-RP OEM Mikuni RE-PLATED POLISHED GOLDEN-CHROME CARB HATS, golden mirror finish as used on all fours carbs on all XS1100 Midnight Special and 1983-84 XJ1100 Midnight Maxim models. Set of 4:
    $ 239.95 + refundable $ 100.00 core charge




    MIKUNI CARB HAT HARDWARE:

    Mikuni Carb Hat Brackets:

    Our re-plated Mikuni carb diaphram cover (chrome "dome" or "Hat") individual BRACKETS allow you to re-create the original look and beauty of these carb racks. These parts are available re-plated to their correct original silver- or yellow-zinc appearance. If you need to replace any missing hardware, or just want to create a show-winning look, then you should start your shopping list here! NOTE: all synch hardware pieces are re-plated, used parts, and as such, may have minor cosmetic flaws (tooling marks, fastener marks, etc.). Most such marks will not be visible once installed. Also, all re-plated items require a refundable core charge which will be credited back to you once you return a same-model, same-type of item(s) as you purchased. Since these are re-plated used parts, we do require an exchange for your original parts so we can have a steady supply of parts to be processed and re-plated for future sales.


    HCP5181RP OEM re-plated carb hat CHOKE CABLE BRACKET, mounted on the #1 hat front position. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all BS28-series carbs as used on all XJ550 models. Does not include the HCP5489RP clamp or the HCP4561RP clamp screw listed below. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 39.95 + $ 25.00 refundable core charge

    HCP17729RP OEM re-plated carb hat CHOKE CABLE BRACKET, mounted on the #3 hat outer position. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all BS30-series carbs as used on all XJ650 Turbo models. Does not include the HCP17725RP clamp or the HCP17726RP clamp screw listed below. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 39.95 + $ 25.00 refundable core charge

    HCP17733RP OEM re-plated carb hat CHOKE CABLE BRACKET, mounted on the #3 hat outer position. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all BS33-series carbs as used on all water-cooled XJ700-X and XJ750-X models. Does not include the HCP17737RP clamp or the HCP17726RP clamp screw listed below. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 39.95 + $ 25.00 refundable core charge

    HCP17734RP OEM re-plated carb hat CHOKE CABLE BRACKET, mounted on the #4 hat inner position. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all BS35- and BS36-series carbs as used on XJ900 models and on XJ1100 (BS34 carbs) models. Does not include the HCP17725RP clamp or the HCP17726RP clamp screw listed below. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 39.95 + $ 25.00 refundable core charge



    HCP5489RP OEM re-plated carb hat choke cable bracket CLAMP, mounts to the HCP5181RP choke cable bracket listed above. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all BS28-series carbs as used on all XJ550 models. . Does not include the HCP4561 clamp screw listed below. NOTE: requires a $ 15.00 core charge, refundable upon the return of an undamaged, same-model, same-type clamp.
    $ 17.95 + $ 15.00 refundable core charge

    HCP17725RP OEM re-plated carb hat choke cable bracket CLAMP, mounts to the HCP17729RP choke cable bracket listed above. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all XJ650 Turbo, all XJ900 (BS35 and BS36 series carbs), and all XJ1100 (BS34 carbs) models. Does not include the HCP4561 clamp screw listed below. NOTE: requires a $ 15.00 core charge, refundable upon the return of an undamaged, same-model, same-type clamp.
    $ 17.95 + $ 15.00 refundable core charge

    HCP17737RP OEM re-plated carb hat choke cable bracket CLAMP, mounts to the HCP17729RP choke cable bracket listed above. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all BS33-series carbs as used on all water-cooled XJ700-X and XJ750-X models. Does not include the HCP17726RP clamp screw listed below. NOTE: requires a $ 15.00 core charge, refundable upon the return of an undamaged, same-model, same-type clamp.
    $ 19.95 + $ 15.00 refundable core charge



    HCP4561RP OEM re-plated carb hat choke cable bracket CLAMP SCREW, mounts the choke cable clamp to the choke cable bracket on all XJ550 models. Beautiful yellow-zinc plating brings the top side of these carbs to life. NOTE: requires a $ 10.00 core charge, refundable upon the return of an undamaged, same-model, same-type screw.
    $ 11.95 + $ 10.00 refundable core charge

    HCP17726RP OEM re-plated carb hat choke cable bracket CLAMP SCREW, mounts the choke cable clamp to the choke cable bracket on all XJ650 Turbo, all water-cooled XJ700-X and XJ750-X models, all XJ900 (BS35 and BS36 series carbs), and all XJ1100 (BS34 carbs) models. Beautiful yellow-zinc plating brings the top side of these carbs to life. NOTE: requires a $ 10.00 core charge, refundable upon the return of an undamaged, same-model, same-type screw.
    $ 11.95 + $ 10.00 refundable core charge




    HCP5490RP OEM re-plated carb hat THROTTLE CABLE BRACKET, mounted on the #2 hat inner position. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all BS28-series carbs as used on all XJ550 models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 29.95 + $ 25.00 refundable core charge


    HCP10433RP OEM re-plated carb hat THROTTLE CABLE BRACKET, mounted on the #3 hat inner position. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all BS30-series carbs as used on all XJ650 Turbo models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 29.95 + $ 25.00 refundable core charge

    HCP7411RP OEM re-plated carb hat FUEL PRESSURE REGULATOR BRACKET, mounts to the HCP10433RP throttle cable bracket listed above. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all BS30-series carbs as used on all XJ650 Turbo models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 39.95 + $ 25.00 refundable core charge


    HCP17731RP OEM re-plated carb hat THROTTLE CABLE BRACKET, mounted on the #3 hat inner position. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all BS33-series carbs as used on all water-cooled XJ700-X and XJ750-X models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 29.95 + $ 25.00 refundable core charge

    HCP17732RP OEM re-plated carb hat THROTTLE CABLE BRACKET, mounted on the #3 hat inner position. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all XJ900 models using the BS35- or BS36-series carbs and all XJ1100 models using the BS34-series carbs. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 39.95 + $ 25.00 refundable core charge




    Mikuni Carb Hat Clips:

    HCP14205 OEM carb body-pressure sensor VACUUM HOSE ROUTING CLIP, use one on the #1 carb hat, rear inner position, on all XJ650 Turbo models. This “shepherd’s crook” bright plated clips route the vacuum hose (in the “crook” part of the clip) away from obstacles, and lays flat (not upright) and captures the pressure sensor vacuum hose (which comes off the front brass fitting of the #2 carb) and routes it properly on its path. Perfectly replaces a commonly missing or rusted original. Use 1 per carb. Each.
    $ discontinued

    HCP21530 Aftermarket carb body-pressure sensor VACUUM HOSE ROUTING CLIP, use one on the #1 carb hat, rear inner position, on all XJ650 Turbo models. This “shepherd’s crook” bright plated clips route the vacuum hose (in the “crook” part of the clip) away from obstacles, and lays flat (not upright) and captures the pressure sensor vacuum hose (which comes off the front brass fitting of the #2 carb) and routes it properly on its path. Perfectly replaces a commonly missing or rusted original. Use 1 per carb. Each:
    $ 9.95

    HCP21529 Aftermarket Mikuni carb hat CLUTCH CABLE ROUTING CLIP, mounts on the #3 carb hat in the outer position, on all XJ1100 models. Heavy wire "shepherd's crook" shaped clip is secured by the carb screw, and captures and properly routes the clutch cable on its way to the clutch cover area. Perfectly replaces a commonly missing or rusted original. Use 1 per carb.
    $ 9.95



    Mikuni Carb Hat Fasteners:

    ch3) OEM and aftermarket Mikuni carb hat-to-body (the “chrome “hat” technically known as a diaphram cover) MOUNTING SCREW. available in a variety of styles and finishes. All Mikuni model carbs originally used a panhead, phillips-drive hat mounting screw with a zinc-plated finish, and did not use a lockwasher. Use 4 per carb, 16 per rack. NOTE: XJ650 Turbo models also used one additional unit of this screw to secure the check valve to its mounting bracket. Also see our complete CARB HARDWARE KITS listed further below for the best deal and ease of ordering!

    Here are some quick guides that shows the different head and drive styles:



    https://www.boltdepot.com/fastener-information/Printable-Tools/Type-Chart.pdf

    http://www.oocities.org/dtmcbride/home_garden/fasteners.html


    for all XJ550, 1984-85 FJ600, 1986-88 FZ600, 1986-90 YX600 Radian, XJ650 Turbo, XJ700-X, XJ750-X, all XJ900RK, RL, N/FN, and F models, XJ1100, and all XS1100 models :

    - These replacement panhead, phillips-drive screws have a natural finish and are made from alloy steel.

    HCP60 OEM Mikuni carb hat MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive, each:
    $ 2.95

    HCP60SET4 OEM Mikuni carb hat MOUNTING SCREW, set of 4:
    $ 11.50

    HCP60SET16 OEM Mikuni carb hat MOUNTING SCREW, set of 16:
    $ 39.95



    HCP910 Aftermarket Mikuni carb hat MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive, each:
    $ 1.50

    HCP910SET4 Aftermarket Mikuni carb hat MOUNTING SCREW, set of 4:
    $ 5.75

    HCP910SET16 Aftermarket Mikuni carb hat MOUNTING SCREW, set of 16:
    $ 17.95



    - These replacement panhead, phillips-drive screws have a polished head and are made from an 18-8 stainless steel.

    HCP62 Aftermarket Mikuni carb hat MOUNTING SCREW, 18-8 stainless-steel, panhead, phillips-drive, each:
    $ 1.50

    HCP62SET4 Aftermarket Mikuni carb hat MOUNTING SCREW, set of 4:
    $ 4.50

    HCP62SET16 Aftermarket Mikuni carb hat MOUNTING SCREW, set of 16:
    $ 14.95



    - These replacement panhead, phillips-drive screws have a black oxide-coated finish and are made from 18-8 stainless steel.

    HCP2749 Aftermarket Mikuni carb hat MOUNTING SCREW, black-oxide coated stainless steel, panhead phillips-drive, each:
    $ 1.50

    HCP2749SET4 Aftermarket Mikuni carb hat MOUNTING SCREW, set of 4:
    $ 5.50

    HCP2749SET16 Aftermarket Mikuni carb hat MOUNTING SCREW, set of 16:
    $ 18.00



    - These replacement button-head, hex-drive screws have a polished head and are made from an 18-8 stainless steel.

    HCP308 Aftermarket Mikuni carb hat MOUNTING SCREW, 18-8 stainless-steel, polished button head, hex-drive, each:
    $ 1.25

    HCP308SET4 Aftermarket Mikuni carb hat MOUNTING SCREW, set of 4:
    $ 4.50

    HCP308SET16 Aftermarket Mikuni carb hat MOUNTING SCREW, set of 16:
    $ 14.00



    - These replacement socket-head, hex-drive screws have a smooth polished head and are made from an 18-8 stainless steel.

    HCP310 Aftermarket Mikuni carb hat MOUNTING SCREW, 18-8 stainless steel, smooth polished socket head, hex-drive, each:
    $ 1.50

    HCP310SET4 Aftermarket Mikuni carb hat MOUNTING SCREW, set of 4:
    $ 5.25

    HCP310SET16 Aftermarket Mikuni carb hat MOUNTING SCREW, set of 16:
    $ 12.95



    - These replacement socket-head, hex-drive screws have a black ribbed head and are made from an alloy steel.

    HCP64 Aftermarket Mikuni carb hat MOUNTING SCREW, black oxide-coated steel, ribbed socket head, hex-drive, each:
    $ 1.00

    HCP64SET4 Aftermarket Mikuni carb hat MOUNTING SCREW, set of 4:
    $ 3.50

    HCP64SET16 Aftermarket Mikuni carb hat MOUNTING SCREW, set of 16:
    $ 10.95




    for all 1992-98 XJ600 Seca II models:

    - These replacement panhead, phillips-drive screws have a natural finish and are made from alloy steel.

    HCP322 OEM Mikuni carb hat short MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive. Use 4 per hat, or 12 per entire rack, in all positions except the four center positions that hold the throttle cable bracket to the #2 and #3 carb hats. Each:
    $ 2.95

    HCP322SET4 OEM Mikuni carb hat short MOUNTING SCREWS, set of 4:
    $ 9.75

    HCP322SET12 OEM Mikuni carb hat short MOUNTING SCREWS, set of 12:
    $ 24.95



    HCP918 Aftermarket Mikuni carb hat short MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive. Use 4 per hat, or 12 per entire rack, in all positions except the four center positions that hold the throttle cable bracket to the #2 and #3 carb hats. Each:
    $ 1.00

    HCP918SET4 Aftermarket Mikuni carb hat short MOUNTING SCREWS, set of 4:
    $ 3.75

    HCP918SET12 Aftermarket Mikuni carb hat short MOUNTING SCREWS, set of 12:
    $ 6.95



    HCP25913 Aftermarket Mikuni carb hat short MOUNTING SCREW, bright zinc-plated alloy steel, panhead, phillips drive, JIS small-head design as original. Use 4 per hat, or 12 per entire rack, in all positions except the four center positions that hold the throttle cable bracket to the #2 and #3 carb hats. Each:
    $ 2.95

    HCP25913SET4 Aftermarket Mikuni carb hat short MOUNTING SCREWS, set of 4:
    $ 9.75

    HCP25913SET12 Aftermarket Mikuni carb hat short MOUNTING SCREWS, set of 12:
    $ 24.95




    HCP3696 OEM Mikuni carb hat long MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive. Use 4 per rack, in the positions that secure the throttle cable bracket on carbs #2 and #3. Each:
    $ 2.50

    HCP3696SET4 OEM Mikuni carb hat long MOUNTING SCREWS, set of 4:
    $ 9.50



    HCP5482 Aftermarket Mikuni carb hat long MOUNTING SCREW, zinc-plated alloy steel, panhead, phillips-drive. Use 4 per rack, in the positions that secure the throttle cable bracket on carbs #2 and #3. Each:
    $ 1.00

    HCP5482SET4 Aftermarket Mikuni carb hat long MOUNTING SCREWS, set of 4:
    $ 3.50




    - These replacement panhead, phillips-drive screws have a polished head and are made from an 18-8 stainless steel.

    HCP1355 Aftermarket Mikuni carb hat short MOUNTING SCREW, 18-8 stainless-steel, panhead, phillips-drive. Use 4 per hat, or 12 per entire rack, in all positions except the four center positions that hold the throttle cable bracket to the #2 and #3 carb hats. Each:
    $ 1.25

    HCP1355SET4 Aftermarket Mikuni carb hat short MOUNTING SCREWS, set of 4:
    $ 4.95

    HCP1355SET12 Aftermarket Mikuni carb hat short MOUNTING SCREWS, set of 12:
    $ 12.95



    HCP21356 Aftermarket Mikuni carb hat long MOUNTING SCREW, 18-8 stainless steel, panhead, phillips-drive.. Use 4 per rack, in the positions that secure the throttle cable bracket on carbs #2 and #3. Each:
    $ 1.50

    HCP21356SET4 Aftermarket Mikuni carb hat long MOUNTING SCREWS, set of 4:
    $ 4.95



    - These replacement button-head, hex-drive screws have a polished head and are made from an 18-8 stainless steel.

    HCP332 Aftermarket Mikuni carb hat short MOUNTING SCREW, 18-8 stainless-steel, polished button head, hex-drive. Use 4 per hat, or 12 per entire rack, in all positions except the four center positions that hold the throttle cable bracket to the #2 and #3 carb hats. Each:
    $ 1.50

    HCP332SET4 Aftermarket Mikuni carb hat short MOUNTING SCREWS, set of 4:
    $ 5.25

    HCP332SET12 Aftermarket Mikuni carb hat short MOUNTING SCREWS, set of 12:
    $ 10.95



    HCP5485 Aftermarket Mikuni carb hat long MOUNTING SCREW, 18-8 stainless-steel, polished button head, hex-drive. Use 4 per rack, in the positions that secure the throttle cable bracket on carbs #2 and #3. Each:
    $ 1.50

    HCP5485SET4 Aftermarket Mikuni carb hat long MOUNTING SCREWS, set of 4:
    $ 4.95




    - These replacement socket-head, hex-drive screws have a smooth polished head and are made from an 18-8 stainless steel.

    HCP329 Aftermarket Mikuni carb hat short MOUNTING SCREW, 18-8 stainless steel, smooth polished socket head, hex-drive. Use 4 per hat, or 12 per entire rack, in all positions except the four center positions that hold the throttle cable bracket to the #2 and #3 carb hats. Each:
    $ 1.25

    HCP329SET4 Aftermarket Mikuni carb hat short MOUNTING SCREWS, set of 16:
    $ 4.75

    HCP329SET12 Aftermarket Mikuni carb hat short MOUNTING SCREWS, set of 12:
    $ 10.75



    HCP5483 Aftermarket Mikuni carb hat long MOUNTING SCREW, 18-8 stainless steel, smooth polished socket head, hex-drive. Use 4 per rack, in the positions that secure the throttle cable bracket on carbs #2 and #3. Each:
    $ 1.50

    HCP5483SET4 Aftermarket Mikuni carb hat long MOUNTING SCREWS, set of 4:
    $ 5.25




    - These replacement socket-head, hex-drive screws have a ribbed head with a black oxide-coated finish and are made from alloy steel.

    HCP339 Aftermarket Mikuni carb hat short MOUNTING SCREW, black oxide-coated steel, ribbed socket head, hex-drive. Use 4 per hat, or 12 per entire rack, in all positions except the four center positions that hold the throttle cable bracket to the #2 and #3 carb hats. Each:
    $ 1.20

    HCP339SET4 Aftermarket Mikuni carb hat short MOUNTING SCREWS , set of 4:
    $ 4.50

    HCP339SET12 Aftermarket Mikuni carb hat short MOUNTING SCREWS , set of 12:
    $ 10.50



    HCP5484 Aftermarket Mikuni carb hat long MOUNTING SCREW, black oxide-coated steel, ribbed socket head, hex-drive. Use 4 per rack, in the positions that secure the throttle cable bracket on carbs #2 and #3. Each:
    $ 1.50

    HCP5484SET4 Aftermarket Mikuni carb hat long MOUNTING SCREWS, set of 4:
    $ 4.95




    HCP60 OEM Mikuni throttle cable bracket mounting SCREW, mounts in the center of the throttle cable bracket and retains the “z-clamp” to the aluminum bracket, use 1 per rack on all 1992-93 XJ600 Seca II models. A separate lockwasher (listed below) is also used with this screw. Panhead, phillips-drive, zinc-plated alloy steel.
    $ 2.95

    HCP22772 OEM Mikuni throttle cable bracket mounting SCREW, mounts in the center of the throttle cable bracket and retains the “z-clamp” to the aluminum bracket, use 1 per rack on all 1994 XJ600 Seca II models. A separate lockwasher (listed below) is also used with this screw. Panhead, phillips-drive, zinc-plated alloy steel.
    $ 3.95

    HCP9180 OEM Mikuni throttle cable bracket mounting SCREW, mounts in the center of the throttle cable bracket and retains the “z-clamp” to the aluminum bracket, use 1 per rack on all 1995-97 XJ600 Seca II models. A separate lockwasher (listed below) is also used with this screw. Panhead, phillips-drive, phosphate-plated alloy steel.
    $ 1.95

    HCP22771 OEM Mikuni throttle cable bracket mounting SCREW, mounts in the center of the throttle cable bracket and retains the “z-clamp” to the aluminum bracket, use 1 per rack on all 1998 XJ600 Seca II models. A separate lockwasher (listed below) is also used with this screw. Panhead, phillips-drive, zinc-plated alloy steel.
    $ 1.95


    HCP21368 Aftermarket Mikuni throttle cable bracket mounting SCREW, mounts in the center of the throttle cable bracket and retains the “z-clamp” to the aluminum bracket, use 1 per rack on all 1992-98 XJ600 Seca II models. A separate lockwasher (listed below) is also used with this screw. Panhead, phillips-drive, zinc-plated alloy steel.
    $ 1.00

    HCP5889 Aftermarket Mikuni throttle cable bracket mounting SCREW, mounts in the center of the throttle cable bracket and retains the “z-clamp” to the aluminum bracket, use 1 per rack on all 1992-98 XJ600 Seca II models. A separate lockwasher (listed below) is also used with this screw. Panhead, phillips-drive, bright 18-8 stainless steel.
    $ 1.25

    HCP21369 Aftermarket Mikuni throttle cable bracket mounting SCREW, mounts in the center of the throttle cable bracket and retains the “z-clamp” to the aluminum bracket, use 1 per rack on all 1992-98 XJ600 Seca II models. A separate lockwasher (listed below) is also used with this screw. Panhead, phillips-drive, bacl-oxide coated 18-8 stainless steel.
    $ 1.95

    HCP21372 Aftermarket Mikuni throttle cable bracket mounting SCREW, mounts in the center of the throttle cable bracket and retains the “z-clamp” to the aluminum bracket, use 1 per rack on all 1992-98 XJ600 Seca II models. A separate lockwasher (listed below) is also used with this screw. Polished 18-8 stainless steel, button head, hex-drive style.
    $ 1.25

    HCP21370 Aftermarket Mikuni throttle cable bracket mounting SCREW, mounts in the center of the throttle cable bracket and retains the “z-clamp” to the aluminum bracket, use 1 per rack on all 1992-98 XJ600 Seca II models. A separate lockwasher (listed below) is also used with this screw. Bright 18-8 stainless steel, socket head, hex-drive style.
    $ 1.00

    HCP21371 Aftermarket Mikuni throttle cable bracket mounting SCREW, mounts in the center of the throttle cable bracket and retains the “z-clamp” to the aluminum bracket, use 1 per rack on all 1992-98 XJ600 Seca II models. A separate lockwasher (listed below) is also used with this screw. Black-oxide coated 18-8 stainless steel, socket head, hex-drive style.
    $ 1.00



    HCP55 OEM Mikuni carb throttle cable clamp bracket screw LOCK WASHER, zinc-plated alloy steel. For use on all 1992-98 XJ600 Seca II models only, use 1 per screw, each:
    $ 1.95

    HCP913 Aftermarket Mikuni carb throttle cable clamp bracket screw LOCK WASHER, zinc-plated alloy steel. For use on all 1992-98 XJ600 Seca II models only, use 1 per screw, each:
    $ 1.00

    HCP57 Aftermarket Mikuni carb throttle cable clamp bracket screw LOCK WASHER, 18-8 stainless steel. For use on all 1992-98 XJ600 Seca II models only, use 1 per screw, each:
    $ 1.00

    HCP59 Aftermarket Mikuni carb throttle cable clamp bracket screw LOCK WASHER, black-oxide coated alloy steel. For use on all 1992-98 XJ600 Seca II models only, use 1 per screw, each.
    $ 1.00



    XJ650 Turbo Additional Hat Hardware:

    HCP1467 OEM fuel pressure regulator and check valve mounting bracket-to-carb hat bracket SCREW. On the inner side of the #3 carb hat, XJ650 Turbo models use a special bracket to hold both the fuel pressure regulator and the check valve. This screw attaches that pressure regulator/check valve bracket to the accelerator cable bracket. Use 2 per carb; order the HCP315 lockwashers separately. Each:
    $ 3.50

    HCP2746 Aftermarket fuel pressure regulator and check valve mounting bracket-to-carb hat bracket SCREW, zinc-plated alloy steel, panhead, phillips-drive. On the inner side of the #3 carb hat, XJ650 Turbo models use a special bracket to hold both the fuel pressure regulator and the check valve. This screw attaches that pressure regulator/check valve bracket to the accelerator cable bracket. Use 2 per carb; order the HCP916 lockwashers separately. Each:
    $ 2.95

    HCP2747 Aftermarket fuel pressure regulator and check valve mounting bracket-to-carb hat bracket SCREW, 18-8 stainless steel, panhead, phillips-drive. On the inner side of the #3 carb hat, XJ650 Turbo models use a special bracket to hold both the fuel pressure regulator and the check valve. This screw attaches that pressure regulator/check valve bracket to the accelerator cable bracket. Use 2 per carb; order the HCP319 lockwashers separately. Each.
    $ 3.95

    HCP21431 Aftermarket fuel pressure regulator and check valve mounting bracket-to-carb hat bracket SCREW, 18-8 stainless steel, polished finish, button head, hex-drive. On the inner side of the #3 carb hat, XJ650 Turbo models use a special bracket to hold both the fuel pressure regulator and the check valve. This screw attaches that pressure regulator/check valve bracket to the accelerator cable bracket. Use 2 per carb; order the HCP319 lockwashers separately. Each.
    $ 1.95

    HCP21430 Aftermarket fuel pressure regulator and check valve mounting bracket-to-carb hat bracket SCREW, 18-8 stainless steel, socket head, smooth polished head, hex-drive. On the inner side of the #3 carb hat, XJ650 Turbo models use a special bracket to hold both the fuel pressure regulator and the check valve. This screw attaches that pressure regulator/check valve bracket to the accelerator cable bracket. Use 2 per carb; order the HCP319 lockwashers separately. Each.
    $ 1.95

    HCP21432 Aftermarket fuel pressure regulator and check valve mounting bracket-to-carb hat bracket SCREW, black-oxide coated alloy steel, socket head, hex-drive. On the inner side of the #3 carb hat, XJ650 Turbo models use a special bracket to hold both the fuel pressure regulator and the check valve. This screw attaches that pressure regulator/check valve bracket to the accelerator cable bracket. Use 2 per carb; order the HCP321 lockwashers separately. Each.
    $ 1.50



    HCP315 OEM fuel pressure regulator and check valve mounting bracket-to-carb hat bracket LOCK WASHER, use with any of the screws listed above on all XJ650 Turbo models, each:
    $ 2.95

    HCP916 Aftermarket zinc-plated alloy steel with a natural finish, fuel pressure regulator and check valve mounting bracket-to-carb hat bracket LOCK WASHER, use with any of the screws listed above on all XJ650 Turbo models, each:
    $ 1.25

    HCP319 Aftermarket 18-8 stainless steel fuel pressure regulator and check valve mounting bracket-to-carb hat bracket LOCK WASHER, use with any of the screws listed above on all XJ650 Turbo models, each:
    $ 1.50

    HCP321 Aftermarket black oxide-coated alloy steel fuel pressure regulator and check valve mounting bracket-to-carb hat bracket LOCK WASHER, use with any of the screws listed above on all XJ650 Turbo models, each:
    $ 1.75



    HCP5386 OEM fuel pressure regulator and check valve mounting bracket NUT. On the inner side of the #3 carb hat, XJ650 Turbo models use a special bracket to hold both the fuel pressure regulator and the check valve. This nut secures the pressure regulator to its bracket (which in turn is screwed into to the accelerator cable bracket). Use 1 per carb; order the HCP10422 plate washer separately. Each:
    $ 3.95

    HCP21407 Aftermarket fuel pressure regulator and check valve mounting bracket NUT, zinc-plated alloy steel. On the inner side of the #3 carb hat, XJ650 Turbo models use a special bracket to hold both the fuel pressure regulator and the check valve. This nut secures the pressure regulator to its bracket (which in turn is screwed into to the accelerator cable bracket). Use 1 per carb; order the HCP21409 plate washer separately. Each:
    $ 1.95

    HCP21408 Aftermarket fuel pressure regulator and check valve mounting bracket NUT, 18-8 stainless steel. On the inner side of the #3 carb hat, XJ650 Turbo models use a special bracket to hold both the fuel pressure regulator and the check valve. This nut secures the pressure regulator to its bracket (which in turn is screwed into to the accelerator cable bracket). Use 1 per carb; order the HCP21409 plate washer separately. Each:
    $ 2.95


    HCP10422 OEM fuel pressure regulator and check valve mounting bracket FLAT WASHER. On the inner side of the #3 carb hat, XJ650 Turbo models use a special bracket to hold both the fuel pressure regulator and the check valve. This washer is used with the HCP5386, HCP21407, or HCP21408 mounting nut. Use 1 per carb. Each:
    $ 4.50

    HCP21409 Aftermarket fuel pressure regulator and check valve mounting bracket FLAT WASHER, 18-8 stainless steel. On the inner side of the #3 carb hat, XJ650 Turbo models use a special bracket to hold both the fuel pressure regulator and the check valve. This washer is used with the HCP5386, HCP21407, or HCP21408 mounting nut. Use 1 per carb. Each:
    $ 2.95

    HCP21410 Aftermarket fuel pressure regulator and check valve mounting bracket FLAT WASHER, black-oxide coated alloy steel. On the inner side of the #3 carb hat, XJ650 Turbo models use a special bracket to hold both the fuel pressure regulator and the check valve. This washer is used with the HCP5386, HCP21407, or HCP21408 mounting nut. Use 1 per carb. Each:
    $ 2.95
     
    Last edited: Dec 1, 2021 at 1:07 AM
  9. chacal

    chacal Moderator Moderator Supporting Vendor Premium Member

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    MIKUNI CARB LOWER END PARTS:

    MIKUNI FUEL AND AIR JETS:

    MIKUNI MAIN FUEL JETS:

    NOTE: stock Mikuni XJ series carbs used the following original main fuel jet sizes:

    #97.5 is used on:
    1986-90 YX600 Radian models

    #100 is used on:
    1985 all XJ700-X models (*see note below)
    1984-85 XJ900 F, N (Switzerland only)
    1991-94 XJ900 models with BS36 carbs

    #102.5 is used on:
    XJ550L (1984) on cylinders #3 and #4 (***see note below)
    1984-85 FJ600 models on the #3 and #4 cylinders
    1984-91 XJ600 models on the #3 and #4 cylinders
    1992-98 XJ600 Seca II North American models (some non-North American models used #105 jets on the outer carbs)
    XJ900RK US & Canada with BS35 carbs
    XJ900RL and XJ900P (31A models) with BS35 carbs

    #105 is used on:
    XJ550L (1984) on cylinders #1 and #2 (***see note below)
    1984-85 FJ600 models on the #1 and #2 cylinders
    1984-91 XJ600 models on the #1 and #2 cylinders
    1992-98 XJ600 Seca II models (some non-North American models used #105 jets on the outer carbs and #102.5 jets on the center carbs)
    1986 all XJ700-X models and all XJ750-X

    #107.5 is used on:
    1986-88 FZ600 models
    XJ900 most 1984-90 models with BS36 carbs (except USA, Canada, of Switzerland)

    #110 is used on:
    1980-81 XS1100 LG/LH/SH models

    #112.5 is used on:
    XJ550 1981-83 North American all models
    XJ1100 all models

    #115 is used on:
    1980-81 XS1100 standard models for cylinders #1 and #4

    #120 is used on:
    1980-81 XS1100 standard models for cylinders #2 and #3

    #125 is used on:
    XJ650 Turbo carbs for all cylinders (**see note below)
    1980-81 XS1100 SH model

    #127.5 is used on:
    XJ650 Turbo carbs for cylinders #1 and #4 (**see note below)

    #130 is used on:
    1978-79 all XS1100 models (****see note below)

    #132.5 is used on:
    XJ650 Turbo carbs for cylinders #2 and #3 (**see note below)

    #137.5 is used on:
    1978-79 all XS1100 models (****see note below)

    #140 is used on:
    1978-79 all XS1100 models (****see note below)


    NOTES:
    * there are discrepancies between the parts manuals and the service manual information on the size of the 1985 XJ700-X main fuel jets; one source claims these carbs were equipped with #100 main fuel jets, while other sources claim a #105 size main fuel jet. Our experience leads us to believe that the correct size for the XJ700-X and XJ750-X models is the #105 size for both the 1985 and 1986 model years.

    ** there are discrepancies between the parts manuals and the service manual information on the size of the 1982-83 XJ650 Turbo main fuel jets; one source claims these carbs were equipped with #127.5/#132.5 combination of main fuel jets as described above, while other sources claim #125 size main fuel jets were used in all cylinders. Original carbs that we have explored have the #127.5/#132.5 combination of jets as shown above.

    *** although listed this way in factory service manuals, we believe this is a misprint, and the correct configuration should be:
    - the #102.5 on XJ550L (1984) on cylinders #1 and #4
    - the #105 on XJ550L (1984) on cylinders #2 and #3

    **** depending on model of carbs used, these bikes could have been equipped with either the #130, #137.5, or the #140 main fuel jets. The #137.5 size seems to be what was equipped from the factory on North American models.

    ***** there is quite a bit of discrepancy between the service manual and parts diagram specifications for the correct size(s) of the 1980-81 XS1100 main fuel jets:

    Service manuals:
    1980-81 Standard models: #115 jets on the outer carbs and #120 jets on the center carbs.
    1980-81 Special models: #110 jets on the outer carbs and #120 jets on the center carbs.
    1980-81 Midnight Special models: #110 jets on the outer carbs and #120 jets on the center carbs.

    Parts books:
    1980-81 Standard models: #115 jets on the outer carbs and #120 jets on the center carbs.
    1980 Special models: #120 jets on the outer carbs and #125 jets on the center carbs.
    1981 Special models: #110 jets on all four carbs.
    1980-81 Midnight Special models: #110 jets on all four carbs.



    All the other sizes are for "tuning" or re-jetting purposes when changing intakes or exhaust systems.

    HCP6900 OEM Mikuni MAIN FUEL JET #105
    HCP6901 OEM Mikuni MAIN FUEL JET #107.5
    HCP6902 OEM Mikuni MAIN FUEL JET #110

    HCP6904 OEM Mikuni MAIN FUEL JET #115
    HCP6905 OEM Mikuni MAIN FUEL JET #117.5
    HCP6906 OEM Mikuni MAIN FUEL JET #120
    HCP6908 OEM Mikuni MAIN FUEL JET #125
    HCP6909 OEM Mikuni MAIN FUEL JET #127.5
    HCP6910 OEM Mikuni MAIN FUEL JET #130
    HCP6911 OEM Mikuni MAIN FUEL JET #132.5
    HCP6912 OEM Mikuni MAIN FUEL JET #135
    HCP6913 OEM Mikuni MAIN FUEL JET #137.5
    HCP6914 OEM Mikuni MAIN FUEL JET #140
    HCP6915 OEM Mikuni MAIN FUEL JET #142.5
    HCP6916 OEM Mikuni MAIN FUEL JET #145
    HCP6917 OEM Mikuni MAIN FUEL JET #147.5
    HCP6918 OEM Mikuni MAIN FUEL JET #150

    All of the above OEM Mikuni Main Fuel Jets are priced as follows:
    $ 6.95 each
    or
    $ 24.95 per set of 4


    HCP6919 Aftermarket Mikuni MAIN FUEL JET #90
    HCP6920 Aftermarket Mikuni MAIN FUEL JET #95
    HCP6921 Aftermarket Mikuni MAIN FUEL JET #100
    HCP6922 Aftermarket Mikuni MAIN FUEL JET #102.5
    HCP6923 Aftermarket Mikuni MAIN FUEL JET #105
    HCP6924 Aftermarket Mikuni MAIN FUEL JET #107.5
    HCP6925 Aftermarket Mikuni MAIN FUEL JET #110
    HCP6926 Aftermarket Mikuni MAIN FUEL JET #112.5
    HCP6927 Aftermarket Mikuni MAIN FUEL JET #115
    HCP6928 Aftermarket Mikuni MAIN FUEL JET #117.5
    HCP6929 Aftermarket Mikuni MAIN FUEL JET #120
    HCP6930 Aftermarket Mikuni MAIN FUEL JET #122.5
    HCP6931 Aftermarket Mikuni MAIN FUEL JET #125
    HCP6932 Aftermarket Mikuni MAIN FUEL JET #127.5
    HCP6933 Aftermarket Mikuni MAIN FUEL JET #130
    HCP7180 Aftermarket Mikuni MAIN FUEL JET #132.5
    HCP6934 Aftermarket Mikuni MAIN FUEL JET #135
    HCP6936 Aftermarket Mikuni MAIN FUEL JET #140
    HCP6937 Aftermarket Mikuni MAIN FUEL JET #142.5
    HCP6938 Aftermarket Mikuni MAIN FUEL JET #145
    HCP6939 Aftermarket Mikuni MAIN FUEL JET #147.5
    HCP6940 Aftermarket Mikuni MAIN FUEL JET #150
    HCP6941 Aftermarket Mikuni MAIN FUEL JET #152.5
    HCP6942 Aftermarket Mikuni MAIN FUEL JET #155
    HCP6943 Aftermarket Mikuni MAIN FUEL JET #157.5
    HCP6944 Aftermarket Mikuni MAIN FUEL JET #160
    HCP6945 Aftermarket Mikuni MAIN FUEL JET #165
    HCP6946 Aftermarket Mikuni MAIN FUEL JET #170
    HCP6947 Aftermarket Mikuni MAIN FUEL JET #175
    HCP6948 Aftermarket Mikuni MAIN FUEL JET #180

    All of the above aftermarket Mikuni main fuel jets (except HCP6932) are priced as follows:
    $ 4.95 each
    or
    $ 18.95 per set of 4

    HCP6932 Aftermarket Mikuni MAIN FUEL JET #127.5
    $ 6.95 each
    or
    $ 24.95 per set of 4



    HCP5186 OEM Mikuni main jet SHIM WASHER, correct copper shim washer fits under the main fuel jet, in-between the jet and the emulsion tube. Fits all XJ550, 1984-85 FJ600, 1986-88 FZ600, 1986-90 YX600 Radian, XJ650 Turbo, XJ700-X, XJ750-X, all XJ900RK, RL, N/FN, and F models, XJ1100, and all XS1100 models. Each:
    $ 2.95

    HCP15596 Aftermarket Mikuni main jet SHIM WASHER, correct copper shim washer fits under the main fuel jet, in-between the jet and the emulsion tube. Fits all XJ550, 1984-85 FJ600, 1986-88 FZ600, 1986-90 YX600 Radian, XJ650 Turbo, XJ700-X, XJ750-X, all XJ900RK, RL, N/FN, and F models, XJ1100, and all XS1100 models. Each:
    $ 1.95



    HCP22383 OEM Mikuni main jet HOLDER-SPACER TUBE, this is the 1” long brass tube that screws into the carb body, and then accepts the main fuel jet at the other end. Fits all 1992-98 XJ600 Seca II models. Each:
    $ 17.95

    HCP22381 OEM Mikuni main jet holder-spacer tube copper CRUSH WASHER, seals the tube to the carb body. A must-replace item when doing a carb rebuild. Fits all 1992-98 XJ600 Seca II models. Each:
    $ 2.95

    HCP22380 OEM Mikuni main jet FLAT RUBBER RING, seals the main fuel jet to the holder-spacer tube. A must-replace item when doing a carb rebuild. Fits all 1992-98 XJ600 Seca II models. Each:
    $ 6.95



    MIKUNI MAIN AIR JETS:

    Alas, the Mikuni BSxx series carbs used on XJ models---unlike their cousins the Hitachi HSCxx series carbs---did not have replaceable main air jets. The main air jets on these models are in the carb throat, facing the airbox, and are a small, brass pressed-in tube that is non-replaceable, and which we suggest you do NOT try to modify by drilling or enlarging.

    And just in case anyone is wondering, here are the sizes of these non-removable main air jets in the various models:

    #45: XJ900 all RK, RL, N/FN, and F models
    #70: XJ550 all models, 1984-85 FJ600, 1984-91 XJ600, and XJ650 Turbo models.
    #120: XJ700-X all models and XJ750-X all models
    #140: XJ1100 and all XS1100 models



    MIKUNI PILOT FUEL JETS:

    ef) OEM and aftermarket Mikuni brass PILOT FUEL JETS, sizes as follows, fits models as shown below.

    NOTE: stock Mikuni XJ series carbs used the following original pilot fuel jet sizes:

    #17.5 XJ600 Seca II (1992-98)
    #30 1986-88 FZ600 and 1986-90 YX600 Radian
    #32.5 XJ650LK Turbo (1983) note that this size should also be used on 1982 Turbo models if the 1983 “power-up” kit has been retrofitted onto a 1982 model.
    #35 XJ550 all 1981-83 models (except Euro), 1984-85 FJ600, XJ650LJ Turbo (1982), and XJ700-X* all models
    #37.5 XJ550 Euro, XJ750-X, and XJ900RK** USA & Canada only
    #40 XJ550L (1984) model, 1984-91 XJ600, and all XJ900RL, N/FN, and F models except USA or Canada
    #42.5 1979-81 XS1100 all models***
    #45 1978 XS1100 models
    #47.5 XJ1100 models

    All the other sizes are for "tuning" or re-jetting purposes when changing intakes or exhaust systems.

    NOTES:
    * there are discrepancies between the parts manuals and the service manual information on the size of the XJ700-X pilot fuel jets; one source claims these carbs were equipped with #35 pilot fuel jets, while other sources claim a #37.5 size pilot fuel jet. Our research and experience shows that the XJ700-X models always used the #35 pilot fuel jets, while the XJ750-X models used #37.5 pilot fuel jets.

    ** there are discrepancies between the parts manuals and the service manual information on the size of the XJ900RK pilot fuel jets; one source claims these carbs were equipped with #37.5 pilot fuel jets, while other sources claim a #40 size pilot fuel jet.

    *** although all 1979-81 XS1100 models uses the same size jet, the jet type differs due to the presence (or not) of the fuel inlet holes in the shaft of the pilot jet. It is critical that you verify which style carbs you have:

    http://www.xs11.com/forum/showthread.php?t=35964

    Carb sets that require the use of the bleed holes in the pilot jet shafts will have a drilled passage from the main jet boss in the carb body straight thru to the pilot jet boss in the carb body. Look at the 6th picture down on that page, it shows the “early” style carbs that have the drilled passage hole between the main and pilot fuel jet passages, and thus requires the use of the “shaft with holes” style of pilot fuel jet (this style of carbs also requires the use of the HCP7376 rubber block-off plug that seals up that pilot fuel opening at the bottom of the jet).


    NOTE: ensuring that your pilot fuel circuit is internally clear and free is one of the most difficult tasks to perform on these carbs due to its incredibly small size (so fuel varnish will accumulate and solidify in there over time):

    http://www.xj4ever.com/inside your carbs.pdf

    To make sure that your internal pilot fuel circuit is truly “zestfully clean” after your clearing efforts:

    1. Drill out an old pilot fuel jet so that the straw from the carb cleaner fits snuggly in the hole (or some other suitable method of “sealing off” a straw into the pilot fuel jet passage where the jet screws into the carb body).
    2. Leave the pilot air jet in, but block it off with a wooden q-tip that is covered with a bit of heat shrink tubing (or use your finger to firmly block it off).
    3. Install the pilot screw without its o-ring, and set it to about 2.5 turns out from soft bottoming.
    4. Blast the carb cleaner through the modified pilot jet and it should look something like this:




    By the way, when using the spray-stream method of checking the passage, don't even THINK of putting your eye or face anywhere even NEAR the outflow path, unless you like a painful and potentially serious trip to the emergency room.



    HCP22378 OEM Mikuni PILOT FUEL JET #17.5. This jet does not have fuel passage holes within the jet shaft.
    $ 6.95 each

    HCP5223 OEM Mikuni PILOT FUEL JET #32.5. This jet does not have fuel passage holes within the jet shaft.
    $ 19.95 each

    HCP5183 OEM Mikuni PILOT FUEL JET #35. This jet does not have fuel passage holes within the jet shaft.
    $ 19.95 each

    HCP6890 OEM Mikuni PILOT FUEL JET #37.5. This jet does not have fuel passage holes within the jet shaft.
    $ 19.95 each

    HCP23312 OEM Mikuni PILOT FUEL JET #42.5. This jet does not have fuel passage holes within the jet shaft.
    $ 21.95 each

    HCP6889 OEM Mikuni PILOT FUEL JET #47.5. This jet does not have fuel passage holes within the jet shaft.
    $ 21.95 each


    HCP22595 Aftermarket Mikuni PILOT FUEL JET #17.5. This jet does not have fuel passage holes within the jet shaft.
    HCP22596 Aftermarket Mikuni PILOT FUEL JET #20. This jet does not have fuel passage holes within the jet shaft.
    HCP22597 Aftermarket Mikuni PILOT FUEL JET #22.5. This jet does not have fuel passage holes within the jet shaft.
    HCP6949 Aftermarket Mikuni PILOT FUEL JET #30. This jet does not have fuel passage holes within the jet shaft.
    HCP6950 Aftermarket Mikuni PILOT FUEL JET #32.5. This jet does not have fuel passage holes within the jet shaft.
    HCP6951 Aftermarket Mikuni PILOT FUEL JET #35. This jet does not have fuel passage holes within the jet shaft.
    HCP6952 Aftermarket Mikuni PILOT FUEL JET #37.5. This jet does not have fuel passage holes within the jet shaft.
    HCP6953 Aftermarket Mikuni PILOT FUEL JET #40. This jet does not have fuel passage holes within the jet shaft.
    HCP6954 Aftermarket Mikuni PILOT FUEL JET #42.5. This jet does not have fuel passage holes within the jet shaft.
    HCP23308 Aftermarket Mikuni PILOT FUEL JET #42.5. This jet has the 6 fuel passage holes within the jet shaft.
    HCP6955 Aftermarket Mikuni PILOT FUEL JET #45. This jet does not have fuel passage holes within the jet shaft.
    HCP23309 Aftermarket Mikuni PILOT FUEL JET #45. This jet has the 6 fuel passage holes within the jet shaft.
    HCP6956 Aftermarket Mikuni PILOT FUEL JET #47.5. This jet does not have fuel passage holes within the jet shaft.
    HCP22310 Aftermarket Mikuni PILOT FUEL JET #47.5. This jet has the 6 fuel passage holes within the jet shaft.
    HCP6957 Aftermarket Mikuni PILOT FUEL JET #50. This jet does not have fuel passage holes within the jet shaft.
    HCP22311 Aftermarket Mikuni PILOT FUEL JET #50. This jet has the 6 fuel passage holes within the jet shaft.
    HCP6958 Aftermarket Mikuni PILOT FUEL JET #52.5. This jet does not have fuel passage holes within the jet shaft.
    HCP6959 Aftermarket Mikuni PILOT FUEL JET #55. This jet does not have fuel passage holes within the jet shaft.

    All of the above aftermarket Mikuni pilot fuel jets (except for HCP6957) are priced as follows:
    $ 5.95 each
    or
    $ 21.95 per set of 4


    HCP6957 Aftermarket Mikuni PILOT FUEL JET #50. This jet does not have fuel passage holes within the jet shaft.
    $ 8.95 each
    or
    $ 29.95 per set of 4



    HCP7376 Aftermarket Mikuni pilot fuel jet bore RUBBER PLUG. NOTE: there are 2 different types of Mikuni BS34 carbs that were used on the XS1100 models. The early models have exposed idle mixture screws and there is a hole drilled between the main fuel jet and the pilot fuel jet. These “drilled” versions require the use of this plug over each pilot fuel jet port. The early style carbs usually have a larger main fuel jet, since the pilot fuel jet fuel supply flows thru the main fuel jet. The later model carbs have the encased or recessed idle mixture screw, smaller main fuel jets (#110 - #120) and NO hole is drilled from the main fuel jet galley to the pilot fuel jet. These version carbs should not use the plugs installed in the pilot jet hole, as the pilot jet pulls its fuel supply directly from the fuel bowl. The later model also uses a smaller main fuel jet (as it no longer needs to do “double-duty” in also supplying the pilot fuel jet). You can review the two different style carbs here: http://www.xs11.com/forum/showthread.php?t=35964
    Each:
    $ 4.50

    HCP7376SET4 Aftermarket Mikuni pilot fuel jet bore RUBBER PLUG, set of 4:
    $ 17.95



    MIKUNI PILOT AIR JETS:

    Pilot air jets on the Mikuni BSxx series carbs are replaceable and are located under the diaphram cover on all XJ550 models and XJ650 Turbo models, and in the carb throat (facing the airbox) on all XJ700-X, XJ750-X, all XJ900RK, RL, N/FN, and F models, and XJ1100 models.

    ef) OEM and aftermarket Mikuni brass PILOT AIR JETS, sizes as follows, fits all XJ550, XJ650 (except Turbo), all XJ700-X and XJ750-X, XJ900RK, and XJ1100 models.

    NOTE: stock Mikuni XJ series carbs used the following original pilot air jet sizes:

    #135 1986-88 FZ600 and 1986-90 YX600 Radian models
    #140 XJ700-X and XJ750-X models
    #145 XJ600 Seca II models (1992-98)
    #155 XJ550L (1984) models, 1984-91 XJ600, and 1983 XJ650 Turbo models (*see note below)
    #160 1984-85 FJ600 models, and all XJ900 all RK, RL, N/FN, and F models
    #165 XJ550 Maxim models (1981-83), 1982 XJ650 Turbo models (*see note below)
    #170 XJ550 Seca, XJ550 Euro, XJ650 Turbo*, and XJ1100 models
    #180 1978-79 XS1100 models (**see note below)
    #185 1980-81 XS1100 all models.

    NOTES:
    * the Yamaha parts books reference the use of #165 pilot air jets for the 1982 XJ650 Turbo models, and #155 pilot air jets for the 1983 XJ650 Turbo models. Original carbs that we have explored have the #170 jets as shown above.

    ** the Yamaha service manual specifies the #180 size for all 1978-79 models, while the parts books specify the #210 size for 1978 models and the #180 size for the 1979 models.


    All the other sizes are for "tuning" or re-jetting purposes when changing intakes or exhaust systems.


    HCP22379 OEM Mikuni PILOT AIR JET #145
    $ 8.95 each

    HCP5218 OEM Mikuni PILOT AIR JET #155
    $ 11.95 each

    HCP6892 OEM Mikuni PILOT AIR JET #160
    $ 11.95 each

    HCP5206 OEM Mikuni PILOT AIR JET #165
    $ 11.95 each

    HCP5171 OEM Mikuni PILOT AIR JET #170
    $ 11.95 each


    HCP6960 Aftermarket Mikuni PILOT AIR JET #110
    HCP6961 Aftermarket Mikuni PILOT AIR JET #112.5
    HCP6962 Aftermarket Mikuni PILOT AIR JET #115
    HCP6963 Aftermarket Mikuni PILOT AIR JET #117.5
    HCP6964 Aftermarket Mikuni PILOT AIR JET #120
    HCP6965 Aftermarket Mikuni PILOT AIR JET #122.5
    HCP6966 Aftermarket Mikuni PILOT AIR JET #125
    HCP6967 Aftermarket Mikuni PILOT AIR JET #130
    HCP6968 Aftermarket Mikuni PILOT AIR JET #135
    HCP6969 Aftermarket Mikuni PILOT AIR JET #137.5
    HCP6970 Aftermarket Mikuni PILOT AIR JET #140
    HCP6971 Aftermarket Mikuni PILOT AIR JET #142.5
    HCP6972 Aftermarket Mikuni PILOT AIR JET #145
    HCP6973 Aftermarket Mikuni PILOT AIR JET #147.5
    HCP6974 Aftermarket Mikuni PILOT AIR JET #150
    HCP8409 Aftermarket Mikuni PILOT AIR JET #155
    HCP13972 Aftermarket Mikuni PILOT AIR JET #157.5
    HCP7181 Aftermarket Mikuni PILOT AIR JET #160
    HCP8410 Aftermarket Mikuni PILOT AIR JET #162.5
    HCP7487 Aftermarket Mikuni PILOT AIR JET #165
    HCP8411 Aftermarket Mikuni PILOT AIR JET #167.5
    HCP7182 Aftermarket Mikuni PILOT AIR JET #170
    HCP8412 Aftermarket Mikuni PILOT AIR JET #172.5
    HCP8413 Aftermarket Mikuni PILOT AIR JET #175
    HCP8414 Aftermarket Mikuni PILOT AIR JET #177.5
    HCP23316 Aftermarket Mikuni PILOT AIR JET #180. These are for 1979 XS1100 models only.
    HCP23318 Aftermarket Mikuni PILOT AIR JET #210. These are for 1978 XS1100 models only.

    All of the above Aftermarket Mikuni Pilot Air Jets are priced as follows:
    $ 6.95 each
    or
    $ 24.95 per set of 4




    WHAT ABOUT RE-JETTING FOR PODS, ETC?:

    Before we even start down this bumpy road, let's get this out of the way: changing the mufflers (only) will generally not require re-jetting, as the stock mufflers are pretty darn free-flowing as it is. The major airflow restrictions (by design) in these engines is on the INTAKE side (the airbox system and its pleated paper filter). Changing to a high-flow air filter (like a K&N) will definitely require increased fuel jet sizing.

    That being said, all of these bikes were jetted a bit lean from the factory, in order to satisfy EPA emissions requirements of that era. So even a stock engine can benefit from slightly larger fuel jets; for example, a stock XJ550 (USA model) increasing fuel jet sizes to #115 on the mains (from the stock #112.5 size) and to a #37.5 on the pilot (stock is a #35 size) can be beneficial. Note that the pilot jet size is not as critical as the main jet size, since the pilot circuit mixture screw allows you to “open up” the pilot circuit independent of the jet size.


    But what about when you do make other intake/exhaust system changes? It's a question we get asked often and unfortunately, one that we cannot answer honestly about your specific bike besides with "it depends".

    Which is a nice way of saying "you're about to enter the seventh circle of hell......."!

    Carb jet tuning required by aftermarket modifications is somewhat of a black art, part science, part skill, part luck. It depends on the current state of tune of your engine, your altitude, the mix of aftermarket parts on your bike, etc........a lot of variables.

    The best advice we can offer is: Just Say No!. Don't do it! Leave everything stock!

    But, since most people---with good reason, I might add---don't always listen to our well-intentioned advice, then the next best recommendation we can offer is: "if you want more power get a bigger bike!".

    And since that doesn't cut it with many owners, either, for the remaining stalwarts out there who insist on "experimenting" with aftermarket intake and exhaust systems, here's the best information that we've come across to give you some GUIDANCE, which you should take as just that, and not as ANSWERS, because it isn't!

    Definitely not plug-and-play:



    And some pod filters make a difficult situation even worse.........read all about it:

    http://www.caferacer.net/forum/technical/19639-pod-filter-thread-geeto.html

    Yoji himself cautions against it:

    http://xjbikes.com/forums/index.php?attachments/mikuni-article-jpg.15101



    Also, if you’ve ever wondered what the numbers on your jets refer to:

    - on Hitachi fuel jets, the numbers refer to the actual physical size of the passage hole expressed in millimeters, i.e. a #114 fuel jets is 1.14mm in diameter, a #42 fuel jet is 0.42mm in diameter, etc.

    - on Mikuni fuel jets, the numbers are a measurement of the volume (cc’s of gasoline) that will flow thru the jet when poured in from a height of 50cm.

    - we do not know what air jet numbers refer to…….although we suspect it is a volume of air that can pass through the jet at some level of vacuum. Anyone who has insight into this issue please let us know more!



    MAIN FUEL JET SIZE CHANGES NEEDED PER TYPICAL MODIFICATION:

    Typical Exhaust Changes:

    +2 main fuel jet size for custom 4-into-2 exhaust

    or

    +4 main fuel jet sizes for 4-into-1 exhaust

    or

    +4 main jet sizes for no muffler (open headers)


    Typical Intake Changes:

    +2 main fuel jet sizes for single K&N filter (inside a stock airbox)

    or

    +2 main fuel jet size for drilling holes in the airbox with stock filter

    or

    +4 main fuel jet sizes for individual pod filters (no airbox)



    Additional changes:

    - Add up all the main fuel jet size increases and subtract 2 sizes.

    - Decrease main fuel jet size by 2 sizes per every 2000' above sea level.

    - Under a mis-match condition, such as when using pod filters with a 100% stock exhaust, or 4-into-1 header with stock filter and air box, then subtract 2 main fuel jet sizes.


    PILOT FUEL JET SIZES CHANGES NEEDED PER TYPICAL MODIFICATION:

    Pilot fuel jet size changes are related only to the change in main fuel jet sizes according to the main fuel jet size formula described above. Note that this pilot fuel jet rule is for the main fuel jet size change BEFORE any main fuel jet altitude compensation is factored in:

    Increase the pilot fuel jet size +1 for every +3 main fuel jet size increases.

    Additional changes:

    - Decrease pilot fuel jet size by 1 for every 6000' above sea level.



    PRECAUTIONS:

    - Make sure your carbs are in perfect working order before making jet changes....meaning fully cleaned internally and rebuilt, operating properly in their stock configuration, proper sized air jets and needles, etc. Otherwise, you'll like find that all of your efforts are going to be a HUGE waste of time.

    - Check plug color often and adjust as needed, 2 main fuel jet sizes at a time and 1 pilot fuel jet size at a time. Bright white plug insulators are a sign of an overly lean fuel mixture condition and WILL cause damage to your engine over time, up to and including engine seizure!

    - Synch the carbs after each jet change.

    - Make sure the floats are set correctly

    - Seriously consider purchasing a Colortune Plug Tuning kit.

    - You may find it necessary to make changes to the size or shimming of the main jet needle. There are no guidelines on what or how to do these changes, this is true trial-and-error tuning!



    EXAMPLE:

    A 1982 XJ550RJ Seca using an aftermarket Supertrapp 4-into-1 exhaust and a single K&N air filter in the stock, unmodified airbox. Bike is primarily operated at an altitude of 2600 feet above sea level.

    XJ550 Seca Stock Mikuni BS28-series Carb Jetting:

    #112.5 Main Fuel Jet
    #35 Pilot Fuel Jet
    #70 Main Air Jet
    #170 Pilot Air Jet
    4GZ11 Needle


    MAIN FUEL JET SIZE CALCULATIONS:

    Changes made:

    Exhaust:
    4 into 1 with Supertrapp = +4 Sizes Main Fuel Jet

    Intake:
    K&N Pod Filters = +4 sizes Main Fuel Jet
    ----------------------------
    Equals: +8 main fuel jet sizes above baseline
    Subtract: -2 main fuel jet size per formula above
    ----------------------------
    Equals: +6 main fuel jet sizes due to modifications, thus:

    Stock main fuel jet size is: #112.5
    + 6 additional sizes
    = a #118.5 main fuel jet size
    ---------------------------
    Subtract: -2 main fuel jet sizes for Altitude of 2500' Average

    = #118.5 calculated from above
    -2 jet sizes for altitude adjustment

    = a #116.5 main fuel jet size.

    NOTE: unfortunately, Mikuni fuel jets only come in 2.5mm size differences, so the calculated size that you need may not be available, in which case you will have to order the closest size available and then fiddle with your pilot mixture screw settings to find a "sweet spot" that is not overly rich at idle or off-idle.




    PILOT FUEL JET SIZE CALCULATIONS:

    The formula is: +1 pilot jet size increase for every +3 main jet sizes increased.

    Stock pilot fuel jet size is: #35
    + 2 additional jet sizes (since we went up +6 main fuel jet sizes before the altitude compensation was factored in):

    = a #37 pilot fuel jet size.

    Note that no altitude compensation is needed on the pilot fuel jet since our elevation is less than 6000' a-s-l.


    ------------------------------

    RESULT:

    A #116.5 Main Fuel Jet and #37 Pilot Fuel Jet is A GOOD STARTING POINT.

    ******************************************************

    Note that the above calculations do NOT take into account any possible changes in the sizes of the main or pilot air jets, the main needle or main needle jet size, and thus are additional variables and opportunities for tuning excellence. These are areas which are largely unexplored by most tuners, but logically should allow for additional fine tuning or additional rage and frustration.........


    Normally, changing to an aftermarket exhaust does NOT require re-jetting, (or minimal re-jetting) as almost ALL of the airflow restriction in the airflow path thru the engine (meaning: ATMOSPHERE > AIRBOX > FILTER > AIRBOX BOOTS > CARBS > INTAKE MANIFOLDS > CYLINDER HEAD PASSAGES > EXHAUST SYSTEM > BACK OUT INTO THE ATMOSPHERE) is within the intake side of this air flow path, and primarily within the stock airbox/air filter. Your stock EXHAUST system can already flow more air volume than the stock INTAKE system allows.

    Thus changing only the stock EXHAUST system, with no changes to the intake side of the heads, normally makes NO DIFFERENCE IN TOTAL AIRFLOW, and "no difference in total airflow" means "no difference in TOTAL FUEL FLOW" either, and thus bigger jets are not needed.


    But once you start freeing up the INTAKE side of the entire system, you will produce more system airflow, even with a stock exhaust system (because, the stock exhaust system has the capability to flow more air through it than what the stock intake system allows).

    This is why re-jetting is usually needed even if you keep the stock airbox and the stock exhaust, but use a K&N low-restriction filter, or even if you drill holes in the stock airbox, or leave the filter lid off.

    All such actions free up the intake side airflow restrictions; the stock exhaust will move this additional airflow, and without providing addition FUEL flow to match the increased airflow (within limits, an engine will gobble up the maximum amount of airflow that it can; an internal combustion engine is actually just a self-powered AIR PUMP) then the engine will run "lean"---meaning not enough fuel to match the amount of airflow that the engine can (and now will) gulp.

    Most pod type filters allow for vastly increased airflow, and thus require fuel re-jetting, and although no one really talks much about it, probably also require AIR JET changes to match the additional fuel flow, but since no one likes to deal with two parameters at once, it becomes a "tuning nightmare".


    BUT, when you read all of the common symptoms of people who use pods, you quickly come to the conclusion that it's not possible to reproduce the stock "smooth in all rpm ranges" engine response. The reality is that you SHOULD be able to match it pretty darn closely, even with the increased airflow through the system, but ONLY changing the fuel jets isn't going to accomplish that. There are also air jets in the system, and they are there for a reason, as well as needle tapers and vacuum piston responsiveness issues.


    For further insights and understanding, the Holy Grail (meaning: the whole miserable, un-varnished truth of what a real chore carb tuning is going to be, written by people who actually know what they're talking about, rather than by people who are trying to sell you something) can be found at:

    www.factorypro.com

    and then click on the "Product Support/Technical Support" link at the top of the page, then on the "Motorcycle Tuning Tech" link, and then the "CV Carb Tuning" link........and then read, weep, study, and do....if you still dare to! HINT: if reading through it makes you think to yourself "sheesh, this sounds like an incredible amount of effort!", well, you're right! That's just some of the joys (and pitfalls) of getting to play "tuning engineer", which is what you're going to be doing. Yamaha probably has 10 of those types of guys on staff, and millions of dollars of test equipment, both physical and computer-aided, that allowed them to get the mixture settings just right---from an overall drivability AND power output standpoint----and now, since you're changing the airflow parameters thru the engine, you'll have to figure it all out "from scratch", but WITHOUT the benefit of 10 trained engineers and all that test equipment and experience.

    That's why we warn you that setting up a bike for pods can be quite a bit of trial-and-error procedure. You can make the calculations according to what is shown in that guideline and then order the jets that the "formula" recommends, and that should serve as a good STARTING POINT............you may (or may not!) have to do more tuning and trial-and-erroring substitution of different jet sizes, etc. to get it performing to you satisfaction, with the recognition that you may ALWAYS end up with a situation that has some kinds of trade-offs.....lazy at the lower end but runs well at mid/upper-ranges, or runs well at the lower end but a "flat-spot" at some other rpm range, etc. Unfortunately there is no magic formula........you might want to read through the factorypro.com article that I list at the end of that section, and you will get a better understanding of what is involved to get the carbs set-up properly in a non-stock configuration.

    As one of our favorite experts says about pod filters: "Get a Rubik's Cube instead.....it's less trouble and actually has an eventual solution!"




    MIKUNI MAIN JET NEEDLES:

    Attached to the vacuum piston assembly is the MAIN JET NEEDLE, and as the vacuum piston is raised or lowered due to the vacuum signal through the carb throat, the main jet needle is raised or lowered into the brass emulsion tube (also described as the "main jet" or "power valve" in some technical literature). These jet needles control the overall fuel flow in the main jet circuit of each carb.

    Although many of these precisely made aluminum needles are not currently available, part of your rebuild efforts should be to verify that the correct size needles are installed in your carbs, and that all of the needles are the same size. The needle "size" is inscribed on the shaft of the needle, and normally takes a 3- to 6-character (letters and numbers) designation. Although most Mikuni needles are interchangeable between all types of the Mikuni BS-series carbs, their different "sizes" are designed to be used in specific applications as determined by factory design engineers.

    Example: needle 4GNT5 --- the first position (4) denotes the needle series (which is the overall length of the needles; in this case somewhere between 40.00 and 49.99 mm in length). The next 2- or 3-positions (GNT) denotes that it is a three-taper needle, each taper increasing in angle as you go through the alphabet from A-to-Z (A = least taper angle, Z = greatest taper angle). The distance of where each different taper point starts (or ends) is not specified, but it is somewhat standardized for each “needle series” (= overall length range of the needle). The last position, if numerical, may indicate either:

    a) a revision to the needle design for production-tracking purposes.
    b) on needles with multiple clip (installed height) positions, the last position specifies the stock clip position.


    Original main needle size configurations are as follows:

    NOTE: all XJ550 and XJ650 Turbo main jet needles are the same length, and thus could be interchanged if one desired to try and do so hard-core carb tuning adjustments via needle swaps. The XJ550 Maxim needles (4GN15) are leaner (fatter shaft) than XJ550 Seca needles (4GZ11) up until mid-point, then they are the same OD. However, the XJ550 Maxim needles get “richer” much quicker than XJ550 Seca needles; the XJ550 Maxim needles have a more pronounced taper to them. XJ650 Turbo needles (4DPS39) than either of the XJ550 needles are, from start to finish. FJ600 needles (4PC4 or 4PC6) are much longer than the XJ550 or XJ650 Turbo needles and thus will not interchange properly.


    4GN or 4GN15: used on all 1981-83 XJ550 Maxim carbs.

    4GZ1 or 4GZ11: used on all North American XJ550 Seca carbs.

    4GZ3: used on all Euro model XJ550 carbs.

    4GZ16: used on all Oceania (Australia, NZ, etc.) model XJ550 carbs.

    4B10: 1992-98 XJ600 Seca II (USA)

    4BC-12, -13, -14, or -15: XJ600 Seca II 1996-98 UK

    4CL8: used on all 1984-91 XJ600 (51H model/Germany) carbs.

    4CP3: used on all 1984 XJ550 Maxim and 1984-91 XJ600 models on the #1, #3, and #4 carbs.

    4CP4: used on all 1984-85 FJ600 models on the #1, #3, and #4 carbs.

    4CP6: used on all 1984-85 FJ600 models on the #2 carb.

    4CP7: used on all 1984 XJ550 Maxim and 1984-91 XJ600 Euro models on the #2 carb. Note: this is a multi-position (adjustable) needle, and the middle position is basically equivalent to the fixed-position (single slot) 4CP6 needle.

    4DPS39: used on all XJ650 Turbo model carbs.

    4HZ22: used on all XJ900RK carbs. This is a non-adjustable needle.

    4HZ26: used on all XJ900RL and 1984-85 XJ900 F, N (Switzerland only) model carbs. This is an adjustable-position needle, and can be used on the XJ900RK models in place of the original 4HZ22 needle above. It offers far greater fine-tuning capabilities, as well as having a slightly "richer" profile than the 4HZ22 needle.

    5CT or 5CTZ: 1992-95 XJ600 Seca II Canada and Australia

    5FZ62: used on all XJ900 F, N, and FN (except Switzerland) model carbs.

    5FZ10: used on all XJ900F carbs.

    5FZ82: used on all XJ700-X non-California model carbs.

    5FZ83: used on all XJ700-X California models, and all XJ750-X carbs.

    *5GLZ-33: used on some XJ1100 carbs (4-position, adjustable height)
    *5GLZ-34: used on some XJ1100 carbs (single position, non-adjustable)

    5GZ6/3: used on all 1978-79 XS1100 carbs

    51Z7: used on all 1980-81 XS1100 Standard models

    5GL16: used on all 1980-81 XS1100 Special and Midnight Special models

    *NOTE: XJ1100 models may have been equipped with either a single position (5GLZ-34) needle, or a multi-poition adjustable needle (5GLZ-33).


    A complete Mikuni main jet "needle" is actually composed of a few component pieces:

    - the aluminum needle (shaft only).
    - the needle "ring cap", which is the plastic "head" of the needle.
    - the ring cap retainer c-clip....retains the ring cap to the needle shaft.
    - the needle tension spring seat metal or plastic "spacer washer".
    - a needle tension spring, to keep the needle tensioned in its bore. NOTE: this is not the large vacuum piston spring, but a very small spring that fits directly under the diaphram spring seat plate, and over the top head (or "ring") of the needle).

    The above components, once assembled together, become a "needle" in Mikuni-speak. The needle is placed into the recess of the vacuum piston, with a small thin alignment pin on the bottom of the needle "ring cap" providing proper alignment of the needle in the vac piston. A flat metal plate, secured by two very small screws, fits over the entire list of above components, and holds everything in place. This flat metal plate is the spring "seat" for both the small needle tension spring (below it), and for the large vacuum piston spring (above it).



    HCP17591 Aftermarket Mikuni main jet NEEDLE, correct for all 1981-83 XJ550 Maxim model carbs (BS28 series), replacement for the original 4GN15 single-position needle. Use 1 per carb. Ring cap, c-clip, spring, and spring seat washer are not included. Each:
    $ 21.95

    HCP17591SET4 Aftermarket Mikuni main jet NEEDLE, correct for all 1981-83 XJ550 Maxim model carbs (BS28 series), replacement for the original 4GN15 single-position needle. Use 1 per carb. Ring cap, c-clip, spring, and spring seat washer are not included. Set of 4:
    $ 79.95



    HCP17590 Aftermarket Mikuni main jet NEEDLE, correct for all XJ550 Seca model carbs (BS28 series), replacement for the original 4GZ11 single-position needle. Use 1 per carb. Ring cap, c-clip, spring, and spring seat washer are not included. Each:
    $ 21.95

    HCP17590SET4 Aftermarket Mikuni main jet NEEDLE, correct for all XJ550 Seca model carbs (BS28 series), replacement for the original 4GZ11 single-position needle. Use 1 per carb. Ring cap, c-clip, spring, and spring seat washer are not included. Set of 4:
    $ 79.95




    HCP22382 OEM Mikuni main jet needle BRASS WELL PLUG, seals off the emulsion tube well and encloses the main jet needle bore. This domed “crown nut” can easily fracture when trying to remove it. It must be fluid-tight to perform properly! Fits all 1992-98 XJ600 Seca II models. Each:
    $ 12.95

    HCP5186 OEM Mikuni main jet needle brass well plug SHIM WASHER, correct thickness shim washer fits under the well plug, in-between the plug and the carb body. Fits all 1992-98 XJ600 Seca II models. Each:
    $ 1.95

    HCP15596 Aftermarket Mikuni main jet needle brass well plug SHIM WASHER, correct thickness shim washer fits under the well plug, in-between the plug and the carb body. Fits all 1992-98 XJ600 Seca II models. Each:
    $ 1.50




    HCP5220A OEM Mikuni main jet NEEDLE SET, correct for all XJ650 Turbo model carbs (BS30 series). Comes complete with the needle, needle cap, cap c-clip, spring, spring seat, retaining plate, and plate screws. Use 1 per carb. Ring cap, c-clip, spring, and spring seat washer are not included. Each:
    $ 59.95

    HCP17592 Aftermarket Mikuni main jet NEEDLE, correct for all XJ650 Turbo model carbs (BS30 series), replacement for the original 4DPS39 single-position needle. Use 1 per carb. Ring cap, c-clip, spring, and spring seat washer are not included. Each:
    $ 19.95

    HCP17592SET4 Aftermarket Mikuni main jet NEEDLE, correct for all XJ650 Turbo model carbs (BS30 series), replacement for the original 4DPS39 single-position needle. Use 1 per carb. Ring cap, c-clip, spring, and spring seat washer are not included. Set of 4:
    $ 74.95



    HCP17593 Aftermarket Mikuni main jet NEEDLE, correct for all XJ700-X non-California models (BS33 series), replacement for the original 5FZ82 single-position needle. Use 1 per carb. Ring cap, c-clip, spring, and spring seat washer are not included. NOTE: can also be used as a substitute for the XJ700-X California models and the XJ750-X models, which used the 5FZ83 needle. In such applications, we suggest that you slightly shim the needle to get the richer mixture that the 5FZ83 needle would provide. Each:
    $ 21.95

    HCP17593SET4 Aftermarket Mikuni main jet NEEDLE, correct for all XJ700-X non-California models (BS33 series), replacement for the original 5FZ82 single-position needle. Use 1 per carb. Ring cap, c-clip, spring, and spring seat washer are not included. Set of 4:
    $ 79.95



    HCP17594 Aftermarket Mikuni main jet NEEDLE, correct for all XJ900RK models carbs (BS35 series), replacement for the original 4HZ22 single-position needle. Use 1 per carb. Ring cap, c-clip, spring, and spring seat washer are not included. Each:
    $ 21.95

    HCP17594SET4 Aftermarket Mikuni main jet NEEDLE, correct for all XJ900RK models carbs (BS35 series), replacement for the original 4HZ22 single-position needle. Use 1 per carb. Ring cap, c-clip, spring, and spring seat washer are not included. Set of 4:
    $ 79.95



    HCP15792 Aftermarket Mikuni main jet NEEDLE, variable-position 5-groove version is correct for all XJ900RL model carbs (BS35 series), but will also work on the XJ900RK models as a replacement for the original single-position needle. This needle is equivalent to the factory 4HZ26 needle. Use 1 per carb. Ring cap, c-clip, spring, and spring seat washer are not included. Each:
    $ 19.95

    HCP15792SET4 Aftermarket Mikuni main jet NEEDLE, variable-position 5-groove version is correct for all XJ900RL model carbs (BS35 series), but will also work on the XJ900RK models as a replacement for the original single-position needle. This needle is equivalent to the factory 4HZ26 needle. Use 1 per carb. Ring cap, c-clip, spring, and spring seat washer are not included. Set of 4:
    $ 74.95



    HCP15790 Aftermarket Mikuni main jet NEEDLE, variable-position 5-groove version is correct for all 1985-1990 XJ900 N, FN, and F models carbs (BS36 series). This needle is equivalent to the factory 5FZ62 needle. Use 1 per carb. Ring cap, c-clip, spring, and spring seat washer are not included. Each:
    $ 21.95

    HCP15790SET4 Aftermarket Mikuni main jet NEEDLE, variable-position 5-groove version is correct for all 1985-1990 XJ900 N, FN, and F models carbs (BS36 series). This needle is equivalent to the factory 5FZ62 needle. Use 1 per carb. Ring cap, c-clip, spring, and spring seat washer are not included. Set of 4:
    $ 79.95



    HCP17595 Aftermarket Mikuni main jet NEEDLE, correct for some XJ1100 models carbs (BS34 series), replacement for the original 5GLZ-34 single-position needle. Use 1 per carb. Ring cap, c-clip, spring, and spring seat washer are not included. Each:
    $ 21.95

    HCP17595SET4 Aftermarket Mikuni main jet NEEDLE, correct for some XJ1100 models carbs (BS34 series), replacement for the original 5GLZ-34 single-position needle. Use 1 per carb. Ring cap, c-clip, spring, and spring seat washer are not included. Set of 4:
    $ 79.95



    HCP23285 Aftermarket Mikuni main jet NEEDLE, correct for all 1978-79 XS1100 model carbs (BS34 series), replacement for the original 5GZ6 5-position needle. Use 1 per carb. Ring cap, c-clip, spring, and spring seat washer are not included. Each:
    $ 19.95

    HCP23285SET4 Aftermarket Mikuni main jet NEEDLE, correct for all 1978-79 XS1100 model carbs (BS34 series), replacement for the original 5GZ6 5-position needle. Use 1 per carb. Ring cap, c-clip, spring, and spring seat washer are not included. Set of 4:
    $ 74.95



    HCP23288 Aftermarket Mikuni main jet NEEDLE, correct for all 1980-81 XS1100 Special and Midnight Special model carbs (BS34 series), replacement for the original 5GL16 5-position needle. Use 1 per carb. Ring cap, c-clip, spring, and spring seat washer are not included. Each:
    $ 19.95

    HCP23288SET4 Aftermarket Mikuni main jet NEEDLE, correct for all 1980-81 XS1100 Special and Midnight Special model carbs (BS34 series), replacement for the original 5GL16 5-position needle. Use 1 per carb. Ring cap, c-clip, spring, and spring seat washer are not included. Set of 4:
    $ 74.95



    HCP5176 OEM Mikuni main jet NEEDLE TENSION SPRING, fits all XJ550, 1984-85 FJ600, XJ650 Turbo, XJ700-X, XJ750-X, all XJ900RK, RL, N, FN, and F models, XJ1100, and 1980-81 XS1100 models. Use 1 per carb. Each:
    $ 7.95

    HCP5176SET4 OEM Mikuni main jet NEEDLE TENSION SPRING, set of 4:
    $ 29.95


    HCP17597 Aftermarket Mikuni main jet NEEDLE TENSION SPRING, fits all XJ550, 1984-85 FJ600, XJ650 Turbo, XJ700-X, XJ750-X, all XJ900RK, RL, N, FN, and F models, XJ1100, and 1980-81 XS1100 models. Use 1 per carb. Each:
    $ 4.95

    HCP17597SET4 Aftermarket Mikuni main jet NEEDLE TENSION SPRING, set of 4:
    $ 18.95




    HCP5177 OEM Mikuni main jet needle tension spring PLASTIC SEAT WASHER, fits all XJ550, 1984-85 FJ600, and XJ650 Turbo models. Use 1 per carb. Each:
    $ 7.95

    HCP5177SET4 OEM Mikuni main jet needle tension spring PLASTIC SEAT WASHERS. Set of 4:
    $ 29.95


    HCP17598 Aftermarket Mikuni main jet needle tension spring PLASTIC SEAT WASHER, fits all XJ550, 1984-85 FJ600, and XJ650 Turbo models. Use 1 per carb. Each:
    $ 4.95

    HCP17598SET4 Aftermarket Mikuni main jet needle tension spring PLASTIC SEAT WASHER. Set of 4:
    $ 18.95




    HCP9905 OEM Mikuni main jet needle tension spring METAL SEAT WASHER, fits all XJ700-X, XJ750-X, all XJ900 RK, RL, N, FN, and F models, XJ1100, and all 1980-81 XS1100 models. Use 1 per carb. Each:
    $ 3.50



    HCP5178 OEM Mikuni main jet needle ring cap C-CLIP, fits original or aftermarket main jet needles used on all XJ550, 1984-85 FJ600, XJ650 Turbo, XJ700-X, XJ750-X, XJ900 RK, RL, N, FN, and F models, XJ1100, and all XS1100 models. Use 1 per carb. Each:
    $ 2.95

    HCP16314 Aftermarket Mikuni main jet needle ring cap C-CLIP, fits the aftermarket main jet needles HCP15790 and HCP15792 (only these needles) as used on all XJ900 RK, RL, N, FN, and F models, and all XS1100 models. Use 1 per carb. Each:
    $ 1.95



    HCP9904 OEM Mikuni main jet needle RING CAP, fits all XJ700-X, XJ750-X, XJ900 RK, RL, N, FN, and F models, XJ1100, and 1980-81 XS1100 models. Use 1 per needle. Each:
    $ 7.95



    mjw1) Aftermarket Mikuni main jet needle TUNING WASHERS, these precision ground 18-8 stainless steel shim washers are used to raise the main jet needle height slightly, in order to allow performance tuning modifications when the stock intake or exhaust system has been modified. Tuning washers fit underneath of the plastic needle cap and move the needle upwards off its vacuum piston seat, thus raising the needle end point within the main jet "emulsion tube". Each washer is .025mm thick, and multiple washers can be used to provide the proper tuning desired. Fits all XJ550, 650 Turbo, XJ700-X, XJ750-X, all XJ900RK, RL, N/FN, and F, XJ1100, and all XS1100 models. NOTE: the outer edge of these washers will need to be trimmed down slightly for use on XJ550 and XJ650 Turbo models.


    HCP7142 Aftermarket 18-8 stainless steel TUNING WASHER, each:
    $ 1.95

    HCP7142SET4 Aftermarket 18-8 stainless steel TUNING WASHERS, set of 4:
    $ 6.00

    HCP7142SET8 Aftermarket 18-8 stainless steel TUNING WASHERS, set of 8:
    $ 10.00

    HCP7142SET12 Aftermarket 18-8 stainless steel TUNING WASHERS, set of 12:
    $ 12.00




    MIKUNI MAIN NEEDLE JET a/k/a EMULSION TUBE:

    Called by a variety of names, the main fuel jet tube is technically known as the MAIN NEEDLE JET, although they also go by the name of "power valves", "emulsion tubes", or some choice four-letter words while you are trying to remove them from their bore hole in the carb body! These 2" long brass tubes have a series of very precise, very small holes that actually atomize the fuel from the main fuel jet around the jet needle, and are what provide the final, precise metering of the fuel mixture through the main jet.

    Commonly clogged and dirty-filthy beyond belief, they are easy to damage while removing them or during the cleaning process. If the holes are enlarged, if the end of the tube (where the needle enters it) worn or egg-shaped, or if the threads in the jet end damaged, these nozzles should be replaced, or your bike will never run properly.


    HCP17586 Aftermarket Mikuni brass MAIN NEEDLE JET or EMULSION TUBE, fits all 1981-83 XJ550 North American and all XJ550 Euro models, each:
    $ 22.95

    HCP17586SET4 Aftermarket Mikuni brass MAIN NEEDLE JETS or EMULSION TUBES, set of 4:
    $ 79.95



    HCP22377 OEM Mikuni brass MAIN NEEDLE JET or EMULSION TUBE, fits all 1992-98 XJ600 Seca II models. NOTE: these are the factory upgraded size 34 emulsion tubes (originals were size 32). Each:
    $ 26.95

    HCP22377SET4 OEM Mikuni brass MAIN NEEDLE JETS or EMULSION TUBES, set of 4:
    $ 99.95



    HCP5224 OEM Mikuni brass MAIN NEEDLE JET or EMULSION TUBE, fits all XJ650 Turbo models, each:
    $ 54.95

    HCP5224SET4 OEM Mikuni brass MAIN NEEDLE JETS or EMULSION TUBES, set of 4:
    $ 218.95


    HCP15598 Aftermarket Mikuni brass MAIN NEEDLE JET or EMULSION TUBE, fits all XJ650 Turbo models, each:
    $ 22.95

    HCP15598SET4 Aftermarket Mikuni brass MAIN NEEDLE JETS or EMULSION TUBES, set of 4:
    $ 79.95



    HCP17587 Aftermarket Mikuni brass MAIN NEEDLE JET or EMULSION TUBE, fits all XJ700-X and XJ750-X models, each:
    $ 24.95

    HCP17587SET4 Aftermarket Mikuni brass MAIN NEEDLE JETS or EMULSION TUBES, set of 4:
    $ 84.95




    HCP9899 OEM Mikuni brass MAIN NEEDLE JET or EMULSION TUBE, fits all XJ900RK, RL, N/FN, and F models, each:
    $ 54.95

    HCP9899SET4 OEM Mikuni brass MAIN NEEDLE JETS or EMULSION TUBES, set of 4:
    $ 218.95


    HCP15789 Aftermarket Mikuni brass MAIN NEEDLE JET or EMULSION TUBE, fits all XJ900RK, RL, N/FN, and F models, each:
    $ 24.95

    HCP15789SET4 Aftermarket Mikuni brass MAIN NEEDLE JETS or EMULSION TUBES, set of 4:
    $ 84.95



    HCP23299 Aftermarket Mikuni brass MAIN NEEDLE JET or EMULSION TUBE, fits all 1978-79 XS1100 models, each:
    $ 24.95

    HCP23299SET4 Aftermarket Mikuni brass MAIN NEEDLE JETS or EMULSION TUBES, set of 4:
    $ 84.95


    HCP16645 Aftermarket Mikuni brass MAIN NEEDLE JET or EMULSION TUBE, fits all XJ1100 and 1980-81 XS1100 models, each:
    $ 24.95

    HCP16645SET4 Aftermarket Mikuni brass MAIN NEEDLE JETS or EMULSION TUBES, set of 4:
    $ 84.95
     
    Last edited: Jul 30, 2021
  10. chacal

    chacal Moderator Moderator Supporting Vendor Premium Member

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    MIKUNI FUEL INLET - FLOAT VALVE NEEDLES:

    fs4) Aftermarket Mikuni fuel inlet - float valve NEEDLE ONLY...for those who wish to do an extreme-budget rebuild, you can buy the rubber-tipped float valve needle by itself (without its brass seat).

    NOTE: on all of the float needles that use a retaining clip, please note that the clip can be installed in two different ways (orientations). User experience indicates that the clip should be positioned so that the "open" area of the clip (that part of the clip that snaps over the ridge on the top of the needle) should be oriented towards the "back" of the carbs; in other words, the open area of the clip should be towards the airbox.

    NOTE: on all of the float needles that use a central, spring-loaded "plunger" at the float end, please note that this plunger is designed to act as a "shock absorber" and is not normally depressed in normal operation, and the float heights and fuel levels should not be set with this plunger depressed. Doing so will result in a vastly incorrect fuel level setting and will lead to carb flooding.


    For use on all XJ550 models, 1984-85 FJ600, 1992-98 XJ600 Seca II, all XJ700-X and XJ750-X models, all XJ900 N/FN and F models using the clipped-to-the-float style needle, all XJ1100, and all 1980-81 XS1100 models:

    HCP1670 Aftermarket Mikuni fuel inlet - float valve rubber-tipped NEEDLE, with retainer clip, each:
    $ 8.95

    HCP1670SET4 Aftermarket Mikuni fuel inlet - float valve rubber-tipped NEEDLES, set of 4:
    $ 32.95



    For use on all XJ650 Turbo, and all XJ900RK and RL models using the non-clipped style of needle:

    HCP1671 Aftermarket Mikuni fuel inlet - float valve metal-tipped NEEDLE only, each:
    $ 6.95

    HCP1671SET4 Aftermarket Mikuni fuel inlet - float valve metal-tipped NEEDLES, set of 4:
    $ 24.95



    For use on all 1978-79 XS1100 models:

    HCP20533 Aftermarket Mikuni fuel inlet - float valve metal-tipped NEEDLE, each:
    $ 6.95

    HCP20533SET4 Aftermarket Mikuni fuel inlet - float valve rubber-tipped NEEDLES, set of 4:
    $ 24.95




    MIKUNI FUEL INLET - FLOAT VALVE ASSEMBLIES:

    kk) OEM and Aftermarket Mikuni FUEL INLET - FLOAT VALVE ASSEMBLY---contains the float needle with retainer clip (if used), float valve brass seat, the seat o-ring, and the seat filter screen.

    NOTE: on all of the float needles that use a retaining clip, please note that the clip can be installed in two different ways (orientations). User experience indicates that the clip should be positioned so that the "open" area of the clip (that part of the clip that snaps over the ridge on the top of the needle) should be oriented towards the "back" of the carbs; in other words, the open area of the clip should be towards the airbox.

    HELPFUL HINT: in many cases, a float valve brass seat may get small scars, burrs, or other deformities in the area where the rubber needle tip contacts the seat opening, and thus preventing the fuel flow from being completely shut off even when the bowl is full. Such minor flaws can sometimes be polished out with some very fine (600-grit or higher) polishing paper rolled up into a very tight "cigarette" and then moved back-and-forth thru the opening. Likewise, any flaws on the internal bore of the seat......where the needle slides.....can sometimes be polished away. You should inspect the seat and needle very carefully, under good light and with strong magnification, in order to inspect these crucial parts during any rebuild process, or if carb flooding is indicated.


    HCP5191 OEM single FUEL INLET - FLOAT VALVE ASSEMBLY, fits all XJ550, 1984-85 FJ600, all 1980-84 XS650, XJ1100, and all 1980-81 XS1100 models carbs. Includes the float valve brass seat, the needle with its retaining clip, and the seat o-ring. The filter screen for the brass seat is included. Each:
    $ 59.95

    HCP5191SET4 OEM FUEL INLET - FLOAT VALVE ASSEMBLIES, set of 4:
    $ 209.95


    HCP1672 Aftermarket single FUEL INLET - FLOAT VALVE ASSEMBLY, fits all XJ550, 1984-85 FJ600, all 1980-84 XS650, XJ1100, and all 1980-81 XS1100 models carbs. Includes the float valve brass seat, the needle with its retaining clip, and the seat o-ring, and the filter screen for the brass seat is included. Each:
    $ 34.95

    HCP1672SET4 Aftermarket FUEL INLET - FLOAT VALVE ASSEMBLIES, set of 4:
    $ 137.95


    HCP14531 Aftermarket single FUEL INLET - FLOAT VALVE ASSEMBLY, fits all XJ550, 1984-85 FJ600, all 1980-84 XS650, XJ1100, and all 1980-81 XS1100 models carbs. Includes the float valve brass seat, the needle with its retaining clip, and the seat o-ring. The filter screen for the brass seat is not included, but you can use the HCP2735 or HCP5193 filter screens (below) on these valve seats. Each:
    $ 29.95

    HCP14531SET4 Aftermarket FUEL INLET - FLOAT VALVE ASSEMBLIES, set of 4:
    $ 99.95




    HCP22384 OEM single FUEL INLET - FLOAT VALVE ASSEMBLY, fits all 1992 XJ600 Seca II model carbs. Includes the float valve brass seat, the needle with its retaining clip, and the seat o-ring. The filter screen for the brass seat is included. Each:
    $ 45.95

    HCP22384SET4 OEM FUEL INLET - FLOAT VALVE ASSEMBLIES, set of 4:
    $ 179.95



    HCP22385 OEM single FUEL INLET - FLOAT VALVE ASSEMBLY, fits all 1993-98 XJ600 Seca II model carbs. Includes the float valve brass seat, the needle with its retaining clip, and the seat o-ring. The filter screen for the brass seat is included. Each:
    $ 42.95

    HCP22385SET4 OEM FUEL INLET - FLOAT VALVE ASSEMBLIES, set of 4:
    $ 159.95


    HCP22599 Aftermarket single FUEL INLET - FLOAT VALVE ASSEMBLY, fits all 1993-98 XJ600 Seca II model carbs. Includes the float valve brass seat, the needle with its retaining clip, and the seat o-ring. The filter screen for the brass seat is not included, but you can use the HCP2735 or HCP5193 filter screens (below) on these valve seats. Each:
    $ 17.95

    HCP22599SET4 Aftermarket FUEL INLET - FLOAT VALVE ASSEMBLIES, set of 4:
    $ 59.95



    HCP5229 OEM single FUEL INLET - FLOAT VALVE ASSEMBLY, for all XJ650 Turbo models. Includes the seat, needle, and seat o-ring. The needle that comes with this kit is metal-tipped and does not accepts (or include) a retaining clip. The filter screen for the brass seat is not included, but you can use the HCP5193 or HCP2735 domed filter screens (below) on these valve seats. Each:
    $ 109.95

    HCP5229SET4 OEM FUEL INLET - FLOAT VALVE ASSEMBLIES, set of 4:
    $ 399.95


    HCP15595 Aftermarket single FUEL INLET - FLOAT VALVE ASSEMBLY, for all XJ650 Turbo models. . Includes the seat, needle, and seat o-ring. The needle that comes with this kit is metal-tipped and does notaccept (or include) a retaining clip. The filter screen for the brass seat is included. NOTE: the fuel passage opening in these aftermarket valves is approximately 50% larger in diameter (1.8mm vs. 1.2mm) than the opening in the original valves and the needle length is slightly shorter than the original needle. Each:
    $ 39.95

    HCP15595SET4 Aftermarket FUEL INLET - FLOAT VALVE ASSEMBLIES, set of 4:
    $ 119.95



    HCP8562 OEM single FUEL INLET - FLOAT VALVE ASSEMBLY, for all 1986-88 FZ600, 1986-90 YX600 Radian, XJ700-X, XJ750-X, and all XJ900 N/FN and F models. The needle that comes with this kit is rubber-tipped and accepts (and includes) the retaining clip. The filter screen for the brass seat is not included, but you can use the HCP2735 or HCP5193 filter screens (below) on these valve seats. Each:
    $ 84.95

    HCP8562SET4 OEM FUEL INLET - FLOAT VALVE ASSEMBLIES, set of 4:
    $ 329.95


    HCP1673 Aftermarket single FUEL INLET - FLOAT VALVE ASSEMBLY, for all 1986-88 FZ600, 1986-90 YX600 Radian, XJ700-X, XJ750-X, and all XJ900 N/FN and F models. The needle that comes with this kit is rubber-tipped and includes its retaining clip. The filter screen for the brass seat is included. Each:
    $ 24.95

    HCP1673SET4 Aftermarket FUEL INLET - FLOAT VALVE ASSEMBLIES, set of 4:
    $ 89.95




    HCP8560 OEM single FUEL INLET - FLOAT VALVE ASSEMBLY, for all XJ900RK and RL models. The needle that comes with this kit is metal-tipped and does not accept (or include) a retaining clip. The filter screen for the brass seat is not included, but you can use the HCP2735 or HCP5193 filter screens (below) on these valve seats. Each:
    $ 84.95

    HCP8560SET4 OEM FUEL INLET - FLOAT VALVE ASSEMBLIES, set of 4:
    $ 329.95


    HCP15633 Aftermarket single FUEL INLET - FLOAT VALVE ASSEMBLY, for all XJ900RK and RL models. The needle that comes with this kit is metal-tipped and does not accept (or include) a retaining clip. The filter screen for the brass seat is not included, but you can use the HCP2735 or HCP5193 filter screens (below) on these valve seats. Each:
    $ 69.95

    HCP15633SET4 Aftermarket FUEL INLET - FLOAT VALVE ASSEMBLIES, set of 4:
    $ 259.95



    HCP23300 OEM single FUEL INLET - FLOAT VALVE ASSEMBLY, fits all 1978-79 XS1100 models carbs. Includes the float valve brass seat and the metal-tipped needle. Crush washer is not included and should be ordered separate. The filter screen for the brass seat is not included, but you can use the HCP2735 or HCP5193 filter screens (below) on these valve seats. Each:
    $ 29.95

    HCP23300SET4 OEM FUEL INLET - FLOAT VALVE ASSEMBLIES, set of 4:
    $ 114.95


    HCP23301 OEM single fuel inlet valve brass seat CRUSH WASHER, for use with the HCP23300 fuel valve above. Each:
    $ 14.95

    HCP23301SET4 OEM single fuel inlet valve brass seat CRUSH WASHER, set of 4:
    $ 57.95


    HCP20534 Aftermarket single FUEL INLET - FLOAT VALVE ASSEMBLY, fits all 1978-79 XS1100 models carbs. Includes the float valve brass seat, the seat gasket, and the metal-tipped needle. The filter screen for the brass seat is not included, but you can use the HCP2735 or HCP5193 filter screens (below) on these valve seats. Each:
    $ 29.95

    HCP20534SET4 Aftermarket FUEL INLET - FLOAT VALVE ASSEMBLIES, set of 4:
    $ 109.95



    fnv1) OEM and aftermarket Mikuni fuel inlet - float needle valve SEAT O-RING. These o-rings are included in all of the float needle valve assemblies listed above; but, if you want to re-use your original valve seats, we highly recommend the replacement of the seat-to-carb body o-rings, as a leaky o-ring will cause carb flooding!

    HCP5192 OEM Mikuni fuel inlet - float needle valve SEAT O-RING, tough and durable buna-N material. Fits all XJ550, 1984-85 FJ600, 1986-88 FZ600, 1986-90 YX600 Radian, 1992-98 XJ600 Seca II, all 1980-84 XS650, XJ650 Turbo, XJ700-X, XJ750-X, all XJ900RK, RL, N/FN, and F models, XJ1100, and all 1980-81 XS1100 models. Each:
    $ 6.95

    HCP5192SET4 OEM Mikuni fuel inlet - float needle valve SEAT O-RINGS, tough and durable buna-N material, set of 4:
    $ 26.95


    HCP7406 Aftermarket Mikuni fuel inlet - float needle valve SEAT O-RING, tough and durable buna-N material. Fits all XJ550, 1984-85 FJ600, 1986-88 FZ600, 1986-90 YX600 Radian, 1992-98 XJ600 Seca II, all 1980-84 XS650, XJ650 Turbo, XJ700-X, XJ750-X, all XJ900RK, RL, N/FN, and F models, XJ1100, and all 1980-81 XS1100 models. Each:
    $ 4.95

    HCP7406SET4 Aftermarket Mikuni fuel inlet - float needle valve SEAT O-RINGS, tough and durable buna-N material, set of 4:
    $ 16.95



    fnv2) OEM and aftermarket Mikuni fuel inlet - float needle valve SEAT FILTER SCREEN. These small domed mesh screen filters snap onto the top of the float needle valve seat and help to keep crud, junk, and other kinds of cosmic debris out of the carbs. These filter screens are included in the replacement float needle valve assemblies and lower end rebuild kits listed above; but, if you want to re-use your original valve seats, we still recommend the replacement of these screens. NOTE: the HCP5193 or HCP2735 domed filter screens fits all of the following float valve seats that we offer: HCP1672, HCP1673, HCP5191, HCP5229, HCP8560, HCP8562, HCP14531, HCP15633, HCP20534, HCP22384, HCP22385, HCP22599, HCP26635, and HCP26637. The HCP2644 flat filter screen only fits the HCP15595 aftermarket valve seats (XJ650 Turbo).


    HCP5193 OEM Mikuni fuel inlet - float needle valve domed SEAT FILTER SCREEN, use one per carb, each:
    $ 16.95

    HCP5193SET4 OEM Mikuni fuel inlet - float needle valve domed SEAT FILTER SCREENS, use one per carb, set of 4:
    $ 64.95


    HCP2735 Aftermarket Mikuni fuel inlet - float needle valve domed SEAT FILTER SCREEN, use one per carb, each:
    $ 13.95

    HCP2735SET4 Aftermarket Mikuni fuel inlet - float needle valve domed SEAT FILTER SCREENS, use one per carb, set of 4:
    $ 49.95



    HCP2644 Aftermarket Mikuni fuel inlet - float valve needle flat SEAT FILTER SCREEN, use one per carb, for use with float valve seats that have a 4.53mm screen boss (used on the HCP15595 aftermarket seat assemblies for XJ650 Turbo models). This style screen pushes straight onto the brass seat screen boss. Each:
    $ 7.95

    HCP2644SET4 Aftermarket Mikuni fuel inlet - float valve needle seat flat SEAT FILTER SCREENS, use one per carb, set of 4:
    $ 27.95




    fh44) OEM Mikuni fuel inlet - float needle valve seat MOUNTING BRACKET. Fits all XJ550, 1984-85 FJ600, XJ650 Turbo, XJ700-X and XJ750-X models, all XJ900RK, RL, N/FN, and F models, and XJ1100 models. Use 1 per carb.

    HCP5189 OEM Mikuni fuel inlet - float needle valve seat MOUNTING BRACKET. Fits all XJ550, 1984-85 FJ600, 1986-88 FZ600, 1986-90 YX600 Radian, all 1980-84 XS650, XJ650 Turbo, XJ700-X and XJ750-X models, all XJ900RK, RL, N/FN, and F models, XJ1100, and all 1980-81 XS1100 models. Use 1 per carb. Each:
    $ 5.95



    fh4) OEM and Aftermarket Mikuni fuel inlet - float needle valve seat mounting bracket RETAINING SCREW. Original screws are panhead, phillips drive alloy steel and strip out easily. Our original and aftermarket replacement screws prevent future problems....it's a good idea to replace these whenever you remove your float needle valve seats. Use 1 per carb.

    fits all XJ550, 1984-85 FJ600, 1986-88 FZ600, 1986-90 YX600 Radian, all 1980-84 XS650, XJ650 Turbo, XJ700-X, XJ750-X, all XJ900RK, RL, N/FN, and F models, XJ1100, and all 1980-81 XS1100 models:

    HCP5187 OEM Mikuni fuel inlet - float needle valve seat mounting bracket RETAINING SCREW, panhead phillips-drive alloy steel, each:
    $ 1.95

    HCP5187SET4 OEM Mikuni fuel inlet - float needle valve seat mounting bracket RETAINING SCREWS, set of 4:
    $ 6.95




    HCP6708 Aftermarket Mikuni fuel inlet - float needle valve seat mounting bracket RETAINING SCREW, panhead phillips-drive zinc-plated alloy steel, each:
    $ 0.95

    HCP6708SET4 Aftermarket Mikuni fuel inlet - float needle valve seat mounting bracket RETAINING SCREWS, set of 4:
    $ 3.75



    HCP6709 Aftermarket Mikuni fuel inlet - float needle valve seat mounting bracket RETAINING SCREW, panhead phillips-drive 18-8 stainless steel, bright finish, each:
    $ 1.00

    HCP6709SET4 Aftermarket Mikuni fuel inlet - float needle valve seat mounting bracket RETAINING SCREWS, set of 4:
    $ 3.00



    HCP6710 Aftermarket Mikuni fuel inlet - float needle valve seat mounting bracket RETAINING SCREW, panhead phillips-drive 18-8 stainless steel, black-oxide coated finish, each:
    $ 1.25

    HCP6710SET4 Aftermarket Mikuni fuel inlet - float needle valve seat mounting bracket RETAINING SCREWS, set of 4:
    $ 3.50



    HCP6712 Aftermarket Mikuni fuel inlet - float needle valve seat mounting bracket RETAINING SCREW, socket head cap screw, hex-drive, 18-8 stainless steel, bright finish, each:
    $ 1.00

    HCP6712SET4 Aftermarket Mikuni fuel inlet - float needle valve seat mounting bracket RETAINING SCREWS, set of 4:
    $ 2.50



    HCP6711 Aftermarket Mikuni fuel inlet - float needle valve seat mounting bracket RETAINING SCREW, socket head cap screw, hex-drive, black-oxide coated finish, each:
    $ 1.00

    HCP6711SET4 Aftermarket Mikuni fuel inlet - float needle valve seat mounting bracket RETAINING SCREWS, set of 4:
    $ 2.50



    fits all 1992-98 XJ600 Seca II models:

    HCP22386 OEM Mikuni fuel inlet - float needle valve seat RETAINING SCREW, panhead phillips-drive alloy steel, each:
    $ 5.95

    HCP22386SET4 OEM Mikuni fuel inlet - float needle valve seat RETAINING SCREWS, set of 4:
    $ 22.95




    MIKUNI CARBS LOWER END REBUILD KITS:

    oo) Aftermarket Mikuni carb LOWER END REBUILD KIT---contains the fuel inlet - float valve needle with retainer clip (on models using them), the brass valve seat with the filter screen, the seat o-ring, and a reproduction bowl gasket (or bowl o-ring on XJ650 Turbo and XJ600 Seca II models). Just the basic parts you'll need if doing a quick carb re-fresh or fighting leaking fuel inlet ("float") valves.

    For complete carb rebuild kits, see further below for our partial or complete carb rebuild kits.

    XJ550 models:

    Each kit contains:
    1 - HCP1672 float valve seat, seat o-ring, needle, and seat filter screen
    1 - HCP863 bowl gasket
    1 - HCP18664 bowl drain screw o-ring
    1 - HCP6709 float valve retaining bracket screw

    HCP1669 Aftermarket Mikuni carb LOWER END REBUILD KIT, each:
    $ 39.95

    HCP1669SET4 Aftermarket Mikuni carb LOWER END REBUILD KITS, set of 4:
    $ 144.95



    1984-85 FJ600 and 1984-91 XJ600 models:

    Each kit contains:
    1 - HCP1672 float valve seat, seat o-ring, needle, and seat filter screen
    1 - HCP1674 bowl gasket
    1 - HCP6709 float valve retaining bracket screw

    HCP19806 Aftermarket Mikuni carb LOWER END REBUILD KIT, each:
    $ 39.95

    HCP19806SET4 Aftermarket Mikuni carb LOWER END REBUILD KITS, set of 4:
    $ 144.95



    1986-88 FZ600 and 1986-90 YX600 Radian models:

    Each kit contains:
    1 - HCP1673 float valve seat, seat o-ring, needle, and seat filter screen
    1 - HCP863 bowl gasket
    1 - HCP6709 float valve retaining bracket screw

    HCP24224 Aftermarket Mikuni carb LOWER END REBUILD KIT, each:
    $ 29.95

    HCP24224SET4 Aftermarket Mikuni carb LOWER END REBUILD KITS, set of 4:
    $ 114.95



    1992 XJ600 Seca II models:

    Each kit contains:
    1 - HCP22384 float valve seat, seat o-ring, needle, and seat filter screen
    1 - HCP19793 float bowl o-ring
    1 - HCP22380 main jet holder flat ring
    1 - HCP22381 main jet holder crush washer
    1 - HCP22386 float valve retaining screw

    HCP22601 Aftermarket Mikuni carb LOWER END REBUILD KIT, each:
    $ 68.95

    HCP22601SET4 Aftermarket Mikuni carb LOWER END REBUILD KITS, set of 4:
    $ 259.95



    1993-98 XJ600 Seca II models:

    Each kit contains:
    1 - HCP22599 float valve seat, seat o-ring, and needle
    1 - HCP2735 filter screen
    1 - HCP19793 float bowl o-ring
    1 - HCP22380 main jet holder flat ring
    1 - HCP22381 main jet holder crush washer
    1 - HCP22386 float valve retaining screw

    HCP22606 Aftermarket Mikuni carb LOWER END REBUILD KIT, each:
    $ 49.95

    HCP22606SET4 Aftermarket Mikuni carb LOWER END REBUILD KITS, set of 4:
    $ 189.95



    XJ650 Turbo models:

    Each kit contains:
    1 - HCP15595 float valve seat, seat o-ring, needle, and seat filter screen
    1 - HCP15594 float bowl o-ring
    1 - HCP18664 bowl drain screw o-ring
    1 - HCP6709 float valve retaining bracket screw

    HCP18890 Aftermarket Mikuni carb LOWER END REBUILD KIT, each:
    $ 39.95

    HCP18890SET4 Aftermarket Mikuni carb LOWER END REBUILD KITS, set of 4:
    $ 154.95



    XJ700-X and XJ750-X models:

    Each kit contains:
    1 - HCP1673 float valve seat, seat o-ring, needle, and seat filter screen
    1 - HCP1674 bowl gasket
    1 - HCP6709 float valve retaining bracket screw

    HCP18891 Aftermarket Mikuni carb LOWER END REBUILD KIT, each:
    $ 27.95

    HCP18891SET4 Aftermarket Mikuni carb LOWER END REBUILD KITS, set of 4:
    $ 107.95



    XJ900RK and RL models:

    Each kit contains:
    1 - HCP15633 float valve seat, seat o-ring, and needle
    1 - HCP2735 float seat screen
    1 - HCP1674 bowl gasket
    1 - HCP18664 bowl drain screw o-ring
    1 - HCP6709 float valve retaining bracket screw

    HCP18893 Aftermarket Mikuni carb LOWER END REBUILD KIT, each:
    $ 79.95

    HCP18893SET4 Aftermarket Mikuni carb LOWER END REBUILD KITS, set of 4:
    $ 299.95



    XJ900N, FN, and F models:

    Each kit contains:
    1 - HCP1673 float valve seat, seat o-ring, needle, and seat filter screen
    1 - HCP1674 bowl gaskets
    1 - HCP18664 bowl drain screw o-ring
    1 - HCP6709 float valve retaining bracket screw

    HCP18894 Aftermarket Mikuni carb LOWER END REBUILD KIT, each:
    $ 28.95

    HCP18894SET4 Aftermarket Mikuni carb LOWER END REBUILD KITS, set of 4:
    $ 114.95



    1978-79 XS1100 all models:

    Each kit contains:
    1 - HCP20534 float valve seat, seat gasket, and metal-tipped needle
    1 - HCP2735 valve seat filter screen
    1 - HCP20535 bowl gasket
    1 - HCP10028 bowl drain screw gasket

    HCP21750 Aftermarket Mikuni carb LOWER END REBUILD KIT, each:
    $ 39.95

    HCP21750SET4 Aftermarket Mikuni carb LOWER END REBUILD KITS, set of 4:
    $ 149.95



    1980-84 XS650 all models, all XJ1100, and all 1980-81 XS1100 models :

    Each kit contains:
    1 - HCP1672 float valve seat, seat o-ring, needle, and seat filter screen
    1 - HCP1675 bowl gasket
    1 - HCP10028 bowl drain screw gasket
    1 - HCP18664 bowl drain screw o-ring
    1 - HCP6709 float valve retaining bracket screw

    NOTE: all 1980 XS650 and 1980 XS1100 models carbs use only a bottom drain screw gasket and do not use a side bowl drain screw o-ring. 1981 XS1100 Standard models use both: a bottom bowl drain screw gasket and a side bowl drain screw o-ring. All 1981-up XS650, all XJ1100, and 1981 XS1100 Special and Midnight Special models use only the side bowl drain screw o-ring.

    HCP18895 Aftermarket Mikuni carb LOWER END REBUILD KIT, each:
    $ 59.95

    HCP18895SET4 Aftermarket Mikuni carb LOWER END REBUILD KITS, set of 4:
    $ 179.95




    MIKUNI CARBS COMPLETE REBUILD KITS:

    Aftermarket Mikuni BS-xx series carb REBUILD KITS---available in two versions, our partial rebuild kits contains the basic parts you'll need to do a carb re-fresh when you are not breaking the individual carbs off the rack, while the complete rebuild kits have all of the additional parts when doing a full rack teardown. Note that both style kits contain only the typical "wear items" (gaskets, rubber parts, etc.) and do not include any of the various "hard parts" that you may also discover you'll need (jets, emulsion tubes, needles, choke plungers, etc.) once you dig into your specific set of carbs.

    The standard kits contain a die-cut paper bowl gasket and a brass straight-blade bowl drain screw, while the deluxe kits have the upgraded hi-performance bowl gaskets and allen-drive bowl drain screws.

    NOTE: the float valve needle that comes with these sets are approximately the same height as a factory Yamaha needle, and it may not be necessary to re-adjust the float level height after installation, but for safety and performance reasons you should always check the fuel level after any carb work or parts replacement!


    Although not included with any of our kits, we recommend that you order the removable, replaceable HCP7376 or HCP14730 pilot mixture screw rubber caps:

    HCP7376 Aftermarket Mikuni idle mixture screw bore hole RUBBER PLUG, tapered design with mushroom head allows repeated removal and re-use. NOTE: may be a slightly loose fit on some models; if so, use a small amount of gasket or rubber adhesive to secure firmly in place (just a thin smear will do). Waterproof and dustproof design keeps the screw away from dirt and moisture, while also allowing for easy removal for tuning purposes. Each:
    $ 4.50

    HCP7376SET4 Aftermarket Mikuni idle mixture screw bore hole RUBBER PLUGS, set of 4:
    $ 17.95



    HCP14730 Aftermarket Mikuni idle mixture screw bore hole VINYL PLUG, pliable black caps allows repeated removal and re-use. NOTE: may be a slightly loose fit on some models; if so, use a small amount of gasket or rubber adhesive to secure firmly in place (just a thin smear will do). Waterproof and dustproof design keeps the screw away from dirt and moisture, while also allowing for easy removal for tuning purposes. Each:
    $ 1.50

    HCP14730SET4 Aftermarket Mikuni idle mixture screw bore hole VINYL PLUGS, set of 4:
    $ 5.95


    XJ550 models:

    Each of our HCP18722 standard partial rebuild kits listed below for XJ550 models include:

    - HCP1669 lower end kits with the HCP863 standard bowl gasket (4)
    - HCP895 mix screw o-rings (4)
    - HCP896 mix screw washers (4)
    - HCP6574 mix screw springs (4)
    - HCP12013 choke plunger valve rubber dust caps (4)
    - HCP14530 fuel bowl brass straight-slot drain screw with o-ring (4)
    - HCP6709 float valve retaining bracket screws (4)

    HCP18722 Aftermarket Mikuni BS28-series carb STANDARD PARTIAL REBUILD KITS, for use on all XJ550 models. Contains enough parts needed to do an entire rack of carbs:
    $ 199.95


    Each of our HCP18864 deluxe partial rebuild kits listed below for XJ550 models include:

    - all of the items in the HCP18722 standard partial rebuild kits but with the following upgraded parts:
    * the HCP14530 brass bowl drain screws are replaced with the HCP8879 allen-drive bowl drain screws.
    * the HCP863 standard bowl gaskets are replaced with the HCP18412 hi-performance bowl gaskets

    HCP18864 Aftermarket Mikuni BS28-series carb DELUXE PARTIAL REBUILD KITS, for use on all XJ550 models. Contains enough parts needed to do an entire rack of carbs:
    $ 209.95




    Each of our HCP18723 standard complete rebuild kits listed below for XJ550 models include:

    - HCP1669 lower end kits with the HCP863 standard bowl gasket (4)
    - HCP895 mix screw o-rings (4)
    - HCP896 mix screw washers (4)
    - HCP6574 mix screw springs (4)
    - HCP12013 choke plunger valve rubber dust caps (4)
    - HCP14530 fuel bowl brass straight-slot drain screws with their o-ring (4)
    - HCP6709 float valve retaining bracket screws (4)
    - HCP38B throttle shaft seals (8)
    - HCP39C throttle shaft shim washers (4)
    - HCP7120 throttle shaft butterfly valve screws (8)
    - HCP905 throttle shaft e-clips (2)
    - HCP6880 fuel tube o-rings (8)

    HCP18723 Aftermarket Mikuni BS28-series carb STANDARD COMPLETE REBUILD KITS, for use on all XJ550 models. Contains all the parts needed to do an entire rack of carbs:
    $ 269.95



    Each of our HCP18865 deluxe complete rebuild kits listed below for XJ550 models include:

    - all of the items in the HCP18723 standard complete rebuild kits but with the following upgraded parts:
    * the HCP14530 brass bowl drain screws are replaced with the HCP8879 allen-drive bowl drain screws.
    * the HCP863 standard bowl gaskets are replaced with the HCP18412 hi-performance bowl gaskets

    HCP18865 Aftermarket Mikuni BS28-series carb DELUXE COMPLETE REBUILD KITS, for use on all XJ550 models. Contains all the parts needed to do an entire rack of carbs:
    $ 279.95



    1984-85 FJ600 and 1984-91 XJ600 models:

    Each of our HCP21514 standard partial rebuild kits listed below for 1984-85 FJ600 and 1984-91 XJ600 models include:

    - HCP1672 float valve seat, seat o-ring, needle, and seat filter screen (4)
    - HCP1674 float bowl standard grade gaskets (4)
    - HCP895 mix screw o-rings (4)
    - HCP896 mix screw washers (4)
    - HCP8544 mix screw springs (4)
    - HCP12013 choke plunger valve rubber dust caps (4)
    - HCP16326 fuel bowl brass straight-slot drain screw (4)
    - HCP6709 float valve retaining bracket screws (4)

    HCP21514 Aftermarket Mikuni BS32-series carb STANDARD PARTIAL REBUILD KITS, fits all 1984-85 FJ600 and 1984-91 XJ600 models. Contains enough parts needed to do an entire rack of carbs:
    $ 199.95


    Each of our HCP21515 deluxe partial rebuild kits listed below for 1984-85 FJ600 and 1984-91 XJ600 models include:

    - all of the items in the HCP21514 standard partial rebuild kits but with the following upgraded parts:
    * the HCP16326 brass bowl drain screws are replaced with the HCP8879 allen-drive bowl drain screws.
    * the HCP1674 standard bowl gaskets are replaced with the HCP18413 hi-performance bowl gaskets

    HCP21515 Aftermarket Mikuni BS32-series carb DELUXE PARTIAL REBUILD KITS, fits all 1984-85 FJ600 and 1984-91 XJ600 models. Contains enough parts needed to do an entire rack of carbs:
    $ 209.95




    Each of our HCP21516 standard complete rebuild kits listed below for 1984-85 FJ600 and 1984-91 XJ600 models include:

    - HCP1672 float valve seat, seat o-ring, needle, and seat filter screen (4)
    - HCP1674 standard bowl gasket (4)
    - HCP895 mix screw o-rings (4)
    - HCP896 mix screw washers (4)
    - HCP8544 mix screw springs (4)
    - HCP12013 choke plunger valve rubber dust caps (4)
    - HCP16326 fuel bowl brass straight-slot drain screw (4)
    - HCP6709 float valve retaining bracket screws (4)
    - HCP38B throttle shaft seals (8)
    - HCP39C throttle shaft shim washers (4)
    - HCP7120 throttle shaft butterfly valve screws (8)
    - HCP905 throttle shaft e-clips (2)
    - HCP6880 fuel tube o-rings (12)

    HCP21516 Aftermarket Mikuni BS32-series carb STANDARD COMPLETE REBUILD KITS, for use on all 1984-85 FJ600 and 1984-91 XJ600 models. Contains all the parts needed to do an entire rack of carbs:
    $ 239.95


    Each of our HCP21517 deluxe partial rebuild kits listed below for 1984-85 FJ600 and 1984-91 XJ600 models include:

    - all of the items in the HCP21516 standard complete rebuild kits but with the following upgraded parts:
    * the HCP16326 brass bowl drain screws are replaced with the HCP8879 allen-drive bowl drain screws.
    * the HCP1674 standard bowl gaskets are replaced with the HCP18413 hi-performance bowl gaskets

    HCP21517 Aftermarket Mikuni BS32-series carb DELUXE COMPLETE REBUILD KITS, for use on all 1984-85 FJ600 and 1984-91 XJ600 models. Contains all the parts needed to do an entire rack of carbs:
    $ 249.95



    1986-88 FZ600 and 1986-90 YX600 Radian models:

    Each of our HCP24225 standard partial rebuild kits listed below for 1986-88 FZ600 and 1986-90 YX600 Radian models include:

    - HCP24224 lower end kits with the HCP863 standard bowl gasket (4)
    - HCP895 mix screw o-rings (4)
    - HCP896 mix screw washers (4)
    - HCP6574 mix screw springs (4)
    - HCP16326 fuel bowl brass straight-slot drain screw (4)
    - HCP12013 choke plunger dust caps (4)

    HCP24225 Aftermarket Mikuni carb STANDARD COMPLETE REBUILD KITS, for use on all 1986-88 FZ600 and 1986-90 YX600 Radian models. Contains all the parts needed to do an entire rack of carbs:
    $ 189.95



    Each of our HCP24226 deluxe partial rebuild kits listed below for 1986-88 FZ600 and 1986-90 YX600 Radian models include:

    - all of the items in the HCP24225 standard partial rebuild kits but with the following upgraded parts:
    * the HCP863 standard bowl gaskets are replaced with the HCP18412 hi-performance bowl gaskets
    * the HCP16326 brass bowl drain screws are replaced with the HCP8879 allen-drive bowl drain screws.

    HCP24226 Aftermarket Mikuni carb DELUXE PARTIAL REBUILD KITS, fits all 1986-88 FZ600 and 1986-90 YX600 Radian models. Contains enough parts needed to do an entire rack of carbs:
    $ 199.95



    Each of our HCP24227 standard complete rebuild kits listed below for 1986-88 FZ600 and 1986-90 YX600 Radian models include:

    - HCP24225 standard partial rebuild kits
    - HCP38B throttle shaft seals (8)
    - HCP39C throttle shaft shim washers (4)
    - HCP7120 throttle shaft butterfly valve screws (8)
    - HCP905 throttle shaft e-clips (2)
    - HCP6880 fuel tube o-rings (8)

    HCP24227 Aftermarket Mikuni carb STANDARD COMPLETE REBUILD KITS, fits all 1986-88 FZ600 and 1986-90 YX600 Radian (USA) models. Contains all the parts needed to do an entire rack of carbs:
    $ 269.95



    Each of our HCP24228 deluxe complete rebuild kits listed below for 1986-88 FZ600 and 1986-90 YX600 Radian models include:

    - all of the items in the HCP23366 standard complete rebuild kits but with the following upgraded parts:
    * the HCP863 standard bowl gaskets are replaced with the HCP18412 hi-performance bowl gaskets
    * the HCP16326 brass bowl drain screws are replaced with the HCP8879 allen-drive bowl drain screws.

    HCP24228 Aftermarket Mikuni carb DELUXE COMPLETE REBUILD KITS, fits all 1986-88 FZ600 and 1986-90 YX600 Radian models. Contains all the parts needed to do an entire rack of carbs:
    $ 277.95



    1992 XJ600 Seca II (USA models only) models:

    Each of our HCP23364 standard partial rebuild kits listed below for 1992 XJ600 Seca II models include:

    - HCP22601 lower end kits (4)
    - HCP895 mix screw o-rings (4)
    - HCP896 mix screw washers (4)
    - HCP6574 mix screw springs (4)
    - HCP16326 fuel bowl brass straight-slot drain screw (4)
    - HCP12013 choke plunger dust caps (4)

    HCP23364 Aftermarket Mikuni BDS26-series carb STANDARD PARTIAL REBUILD KITS, fits all 1992 XJ600 Seca II (USA) models. Contains enough parts needed to do an entire rack of carbs:
    $ 309.95


    Each of our HCP23365 deluxe partial rebuild kits listed below for 1992 XJ600 Seca II models include:

    - all of the items in the HCP23364 standard partial rebuild kits but with the following upgraded parts:
    * the HCP16326 brass bowl drain screws are replaced with the HCP8879 allen-drive bowl drain screws.

    HCP23365 Aftermarket Mikuni BDS26-series carb DELUXE PARTIAL REBUILD KITS, fits all 1992 XJ600 Seca II (USA) models. Contains enough parts needed to do an entire rack of carbs:
    $ 314.95



    Each of our HCP23366 standard complete rebuild kits listed below for 1992 XJ600 Seca II models include:

    - HCP22601 lower end kits (4)
    - HCP895 mix screw o-rings (4)
    - HCP896 mix screw washers (4)
    - HCP6574 mix screw springs (4)
    - HCP16326 fuel bowl brass straight-slot drain screw (4)
    - HCP12013 choke plunger dust caps (4)
    - HCP38B throttle shaft seals (8)
    - HCP39C throttle shaft shim washers (4)
    - HCP7120 throttle shaft butterfly valve screws (8)
    - HCP905 throttle shaft e-clips (2)
    - HCP22388 fuel inlet t-fitting and fuel supply tube rubber sleeve seals (6)

    HCP23366 Aftermarket Mikuni BDS26-series carb STANDARD COMPLETE REBUILD KITS, fits all 1992 XJ600 Seca II (USA) models. Contains all the parts needed to do an entire rack of carbs:
    $ 439.95



    Each of our HCP23367 deluxe complete rebuild kits listed below for 1992 XJ600 Seca II models include:

    - all of the items in the HCP23366 standard complete rebuild kits but with the following upgraded parts:
    * the HCP16326 brass bowl drain screws are replaced with the HCP8879 allen-drive bowl drain screws.

    HCP23367 Aftermarket Mikuni BDS26-series carb DELUXE COMPLETE REBUILD KITS, fits all 1992 XJ600 Seca II (USA) models. Contains all the parts needed to do an entire rack of carbs:
    $ 444.95



    1993-98 XJ600 Seca II (USA models only) models:

    Each of our HCP23368 standard partial rebuild kits listed below for 1993-98 XJ600 Seca II models include:

    - HCP22606 lower end kits (4)
    - HCP895 mix screw o-rings (4)
    - HCP896 mix screw washers (4)
    - HCP6574 mix screw springs (4)
    - HCP16326 fuel bowl brass straight-slot drain screw (4)
    - HCP12013 choke plunger dust caps (4)

    HCP23368 Aftermarket Mikuni BDS26-series carb STANDARD PARTIAL REBUILD KITS, fits all 1993-982 XJ600 Seca II (USA) models. Contains enough parts needed to do an entire rack of carbs:
    $ 259.95



    Each of our HCP23369 deluxe partial rebuild kits listed below for 1993-98 XJ600 Seca II models include:

    - all of the items in the HCP23368 standard partial rebuild kits but with the following upgraded parts:
    * the HCP16326 brass bowl drain screws are replaced with the HCP8879 allen-drive bowl drain screws.

    HCP23369 Aftermarket Mikuni BDS26-series carb DELUXE PARTIAL REBUILD KITS, fits all 1993-98 XJ600 Seca II (USA) models. Contains enough parts needed to do an entire rack of carbs:
    $ 269.95



    Each of our HCP23370 standard complete rebuild kits listed below for 1993-98 XJ600 Seca II models include:

    - HCP22606 lower end kits (4)
    - HCP895 mix screw o-rings (4)
    - HCP896 mix screw washers (4)
    - HCP6574 mix screw springs (4)
    - HCP16326 fuel bowl brass straight-slot drain screw (4)
    - HCP12013 choke plunger dust caps (4)
    - HCP38B throttle shaft seals (8)
    - HCP39C throttle shaft shim washers (4)
    - HCP7120 throttle shaft butterfly valve screws (8)
    - HCP905 throttle shaft e-clips (2)
    - HCP22388 fuel inlet t-fitting and fuel supply tube rubber sleeve seals (6)

    HCP23370 Aftermarket Mikuni BDS26-series carb STANDARD COMPLETE REBUILD KITS, fits all 1993-982 XJ600 Seca II (USA) models. Contains all the parts needed to do an entire rack of carbs:
    $ 379.95



    Each of our HCP23371 deluxe complete rebuild kits listed below for 1993-98 XJ600 Seca II models include:

    - all of the items in the HCP23370 standard complete rebuild kits but with the following upgraded parts:
    * the HCP16326 brass bowl drain screws are replaced with the HCP8879 allen-drive bowl drain screws.

    HCP23371 Aftermarket Mikuni BDS26-series carb DELUXE COMPLETE REBUILD KITS, fits all 1993-982 XJ600 Seca II (USA) models. Contains all the parts needed to do an entire rack of carbs:
    $ 384.95



    XJ650 Turbo models:

    Each of our HCP18867 standard partial rebuild kits listed below for XJ650 Turbo models include:

    - HCP15595 float valve seat, seat o-ring, needle, and seat filter screen (4)
    - HCP895 mix screw o-rings (4)
    - HCP896 mix screw washers (4)
    - HCP8544 mix screw springs (4)
    - HCP9846 starter plunger seat o-rings (4)
    - HCP12013 choke plunger valve rubber dust caps (4)
    - HCP15594 float bowl o-rings (4)
    - HCP14530 fuel bowl brass straight-slot drain screws with their o-ring (4)
    - HCP6709 float valve retaining bracket screws (4)

    HCP18867 Aftermarket Mikuni BS30-series carb STANDARD PARTIAL REBUILD KITS, fits all XJ650 Turbo models. Contains enough parts needed to do an entire rack of carbs:
    $ 249.95



    Each of our HCP18868 standard complete rebuild kits listed below for XJ650 Turbo models include:

    - HCP15595 float valve seat, seat o-ring, needle, and seat filter screen (4)
    - HCP895 mix screw o-rings (4)
    - HCP896 mix screw washers (4)
    - HCP8544 mix screw springs (4)
    - HCP9846 starter plunger seat o-rings (4)
    - HCP12013 choke plunger valve rubber dust caps (4)
    - HCP15594 float bowl o-rings (4)
    - HCP14530 fuel bowl brass straight-slot drain screws with their o-ring (4)
    - HCP6709 float valve retaining bracket screws (4)
    - HCP38B throttle shaft seals (8)
    - HCP39C throttle shaft shim washers (4)
    - HCP7120 throttle shaft butterfly valve screws (8)
    - HCP905 throttle shaft e-clips (2)
    - HCP6880 fuel tube o-rings (20)

    HCP18868 Aftermarket Mikuni BS30-series carb STANDARD COMPLETE REBUILD KITS, fits all XJ650 Turbo models. Contains all the parts needed to do an entire rack of carbs:
    $ 329.95


    NOTE: there are no "deluxe" rebuild kits available for the XJ650 Turbo models.



    XJ700-X and XJ750-X models:

    Each of our HCP18724 standard partial rebuild kits listed below for XJ700-X or XJ750-X models include:

    - HCP1673 float valve seat, seat o-ring, needle, and seat filter screen (4)
    - HCP895 mix screw o-rings (4)
    - HCP896 mix screw washers (4)
    - HCP6574 mix screw springs (4)
    - HCP12013 choke plunger valve rubber dust caps (4)
    - HCP1674 float bowl standard grade gaskets (4)
    - HCP16326 fuel bowl brass straight-slot drain screw (4)
    - HCP6709 float valve retaining bracket screws (4)

    HCP18724 Aftermarket Mikuni BS33-series carb STANDARD PARTIAL REBUILD KITS, fits all XJ700-X and XJ750-X models. Contains enough parts needed to do an entire rack of carbs:
    $ 179.95



    Each of our HCP18869 deluxe partial rebuild kits listed below for XJ700-X or XJ750-X models include:

    - all of the items in the HCP18724 standard partial rebuild kits but with the following upgraded parts:
    * the HCP16326 brass bowl drain screws are replaced with the HCP8879 allen-drive bowl drain screws.
    * the HCP1674 standard bowl gaskets are replaced with the HCP18413 hi-performance bowl gaskets

    HCP18869 Aftermarket Mikuni BS33-series carb DELUXE PARTIAL REBUILD KITS, fits all XJ700-X and XJ750-X models. Contains enough parts needed to do an entire rack of carbs:
    $ 189.95



    Each of our HCP18725 standard complete rebuild kits listed below for XJ700-X or XJ750-X models include:

    - HCP1673 float valve seat, seat o-ring, needle, and seat filter screen (4)
    - HCP895 mix screw o-rings (4)
    - HCP896 mix screw washers (4)
    - HCP6574 mix screw springs (4)
    - HCP12013 choke plunger valve rubber dust caps (4)
    - HCP1674 float bowl standard grade gaskets (4)
    - HCP16326 fuel bowl brass straight-slot drain screw (4)
    - HCP6709 float valve retaining bracket screws (4)
    - HCP38B throttle shaft seals (8)
    - HCP39C throttle shaft shim washers (4)
    - HCP7120 throttle shaft butterfly valve screws (8)
    - HCP905 throttle shaft e-clips (2)
    - HCP6880 fuel tube o-rings (12)

    HCP18725 Aftermarket Mikuni BS33-series carb STANDARD COMPLETE REBUILD KITS, fits all XJ700-X and XJ750-X models. Contains all the parts needed to do an entire rack of carbs:
    $ 249.95



    Each of our HCP18870 deluxe complete rebuild kits listed below for XJ700-X or XJ750-X models include:

    - all of the items in the HCP18725 standard complete rebuild kits but with the following upgraded parts:
    * the HCP16326 brass bowl drain screws are replaced with the HCP8879 allen-drive bowl drain screws.
    * the HCP1674 standard bowl gaskets are replaced with the HCP18413 hi-performance bowl gaskets

    HCP18870 Aftermarket Mikuni BS33-series carb DELUXE COMPLETE REBUILD KITS, fits all XJ700-X and XJ750-X models. Contains all the parts needed to do an entire rack of carbs:
    $ 257.95



    XJ900RK and RL models (BS35-series carbs):

    Each of our HCP18726 standard partial rebuild kits listed below for XJ900RK or RL models include:

    - HCP15633 float valve seat, seat o-ring, and needle (4)
    - HCP2735 float valve seat filter screens (4)
    - HCP895 mix screw o-rings (4)
    - HCP896 mix screw washers (4)
    - HCP8544 mix screw springs (4)
    - HCP10520 or HCP12014 choke plunger valve rubber dust caps (4)
    - HCP1674 float bowl standard grade gaskets (4)
    - HCP14530 fuel bowl brass straight-slot drain screws with their o-ring (4)
    - HCP6709 float valve retaining bracket screws (4)

    HCP18726 Aftermarket Mikuni BS35-series carb STANDARD PARTIAL REBUILD KITS, fits all 1983-84 XJ900RK and RL models. Contains enough parts needed to do an entire rack of carbs:
    $ 369.95


    Each of our HCP18871 deluxe partial rebuild kits listed below for XJ900RK or RL models include:

    - all of the items in the HCP18726 standard partial rebuild kits but with the following upgraded parts:
    * the HCP14530 brass bowl drain screws are replaced with the HCP8879 allen-drive bowl drain screws.
    * the HCP1674 standard bowl gaskets are replaced with the HCP18413 hi-performance bowl gaskets

    HCP18871 Aftermarket Mikuni BS35-series carb DELUXE PARTIAL REBUILD KITS, fits all 1983-84 XJ900RK and RL models. Contains enough parts needed to do an entire rack of carbs:
    $ 384.95



    Each of our HCP18727 standard complete rebuild kits listed below for XJ900RK or RL models include:

    - HCP15633 float valve seat, seat o-ring, and needle (4)
    - HCP2735 float valve seat filter screens (4)
    - HCP895 mix screw o-rings (4)
    - HCP896 mix screw washers (4)
    - HCP8544 mix screw springs (4)
    - HCP10520 or HCP12014 choke plunger valve rubber dust caps (4)
    - HCP1674 float bowl standard grade gaskets (4)
    - HCP14530 fuel bowl brass straight-slot drain screws with their o-ring (4)
    - HCP6709 float valve retaining bracket screws (4)
    - HCP38B throttle shaft seals (8)
    - HCP39C throttle shaft shim washers (4)
    - HCP7120 throttle shaft butterfly valve screws (8)
    - HCP905 throttle shaft e-clips (2)
    - HCP6880 fuel tube o-rings (12)

    HCP18727 Aftermarket Mikuni BS35-series carb STANDARD COMPLETE REBUILD KITS, fits all 1983-84 XJ900RK and RL models. Contains all the parts needed to do an entire rack of carbs:
    $ 429.95



    Each of our HCP18872 deluxe complete rebuild kits listed below for XJ900RK or RL models include:

    - all of the items in the HCP18727 standard complete rebuild kits but with the following upgraded parts:
    * the HCP14530 brass bowl drain screws are replaced with the HCP8879 allen-drive bowl drain screws.
    * the HCP1674 standard bowl gaskets are replaced with the HCP18413 hi-performance bowl gaskets

    HCP18872 Aftermarket Mikuni BS35-series carb DELUXE COMPLETE REBUILD KITS, fits all 1983-84 XJ900RK and RL models. Contains all the parts needed to do an entire rack of carbs:
    $ 439.95



    XJ900N, FN, F models (BS36-series carbs):

    Each of our HCP18728 standard partial rebuild kits listed below for XJ900N, FN, and F models include:

    - HCP1673 float valve seat, seat o-ring, needle, and seat filter screen (4)
    - HCP895 mix screw o-rings (4)
    - HCP896 mix screw washers (4)
    - HCP8544 mix screw springs (4)
    - HCP10520 or HCP12014 choke plunger valve rubber dust caps (4)
    - HCP1674 float bowl standard grade gaskets (4)
    - HCP14530 fuel bowl brass straight-slot drain screws with their o-ring (4)
    - HCP6709 float valve retaining bracket screws (4)

    HCP18728 Aftermarket Mikuni BS36-series carb STANDARD PARTIAL REBUILD KITS, fits all 1985-90 XJ900N, FN, and F models. Contains enough parts needed to do an entire rack of carbs:
    $ 199.95



    Each of our HCP18873 deluxe partial rebuild kits listed below for XJ900N, FN, and F models include:

    - all of the items in the HCP18728 standard partial rebuild kits but with the following upgraded parts:
    * the HCP14530 brass bowl drain screws are replaced with the HCP8879 allen-drive bowl drain screws.
    * the HCP1674 standard bowl gaskets are replaced with the HCP18413 hi-performance bowl gaskets

    HCP18873 Aftermarket Mikuni BS36-series carb DELUXE PARTIAL REBUILD KITS, fits all 1985-90 XJ900N, FN, and F models. Contains enough parts needed to do an entire rack of carbs:
    $ 209.95



    Each of our HCP18729 standard complete rebuild kits listed below for XJ900N, FN, and F models include:

    - HCP1673 float valve seat, seat o-ring, needle, and seat filter screen (4)
    - HCP895 mix screw o-rings (4)
    - HCP896 mix screw washers (4)
    - HCP8544 mix screw springs (4)
    - HCP10520 or HCP12014 choke plunger valve rubber dust caps (4)
    - HCP1674 float bowl standard grade gaskets (4)
    - HCP14530 fuel bowl brass straight-slot drain screws with their o-ring (4)
    - HCP6709 float valve retaining bracket screws (4)
    - HCP38B8 throttle shaft seals (8)
    - HCP39C throttle shaft shim washers (4)
    - HCP7120 throttle shaft butterfly valve screws (8)
    - HCP905 throttle shaft e-clips (2)
    - HCP6880 fuel tube o-rings (12)

    HCP18729 Aftermarket Mikuni BS36-series carb STANDARD COMPLETE REBUILD KITS, fits all 1985-90 XJ900N, FN, and F models. Contains all the parts needed to do an entire rack of carbs:
    $ 274.95



    Each of our HCP18874 deluxe complete rebuild kits listed below for XJ900N, FN, and F models include:

    - all of the items in the HCP18729 standard complete rebuild kits but with the following upgraded parts:
    * the HCP14530 brass bowl drain screws are replaced with the HCP8879 allen-drive bowl drain screws.
    * the HCP1674 standard bowl gaskets are replaced with the HCP18413 hi-performance bowl gaskets

    HCP18874 Aftermarket Mikuni BS36-series carb DELUXE COMPLETE REBUILD KITS, fits all 1985-90 XJ900N, FN, and F models. Contains all the parts needed to do an entire rack of carbs:
    $ 284.95



    XJ1100 and all 1980-81 XS1100 models:

    Each of our HCP18730 standard partial rebuild kits listed below for XJ1100 and 1980-81 XS1100 models include:

    - HCP1672 float valve seat, seat o-ring, needle, and seat filter screen (4)
    - HCP895 mix screw o-rings (4)
    - HCP896 mix screw washers (4)
    - HCP8544 mix screw springs (4)
    - HCP10520 or HCP12014 choke plunger valve rubber dust caps (4)
    - HCP1675 float bowl standard grade gaskets (4)
    - HCP14530 fuel bowl brass straight-slot drain screws with their o-ring (4)
    - HCP10028 bowl drain screw gasket (4)
    - HCP6709 float valve retaining bracket screw (4)

    HCP18730 Aftermarket Mikuni BS34-series carb STANDARD PARTIAL REBUILD KITS, fits all 1982-84 XJ1100 and 1980-81 XS1100 models. NOTE: the HCP10028 drain screw gasket is only used on 1980 XS1100 (all models) and on 1981 XS1100 Standard models. Contains enough parts needed to do an entire rack of carbs:
    $ 242.95



    Each of our HCP18875 deluxe partial rebuild kits listed below for XJ1100 and 1980-81 XS1100 models include:

    - all of the items in the HCP18730 standard partial rebuild kits but with the following upgraded parts:
    * the HCP14530 brass bowl drain screws are replaced with the HCP8879 allen-drive bowl drain screws.
    * the HCP1675 standard bowl gaskets are replaced with the HCP18414 hi-performance bowl gaskets

    HCP18875 Aftermarket Mikuni BS34-series carb DELUXE PARTIAL REBUILD KITS, fits all 1982-84 XJ1100 and 1980-81 XS1100 models. Contains enough parts needed to do an entire rack of carbs:
    $ 254.95




    Each of our HCP18731 standard complete rebuild kits listed below for XJ1100 and 1980-81 XS1100 models include:

    - HCP1672 float valve seat, seat o-ring, needle, and seat filter screen (4)
    - HCP895 mix screw o-rings (4)
    - HCP896 mix screw washers (4)
    - HCP8544 mix screw springs (4)
    - HCP10520 or HCP12014 choke plunger valve rubber dust caps (4)
    - HCP1675 float bowl standard grade gaskets (4)
    - HCP14530 fuel bowl brass straight-slot drain screws with their o-ring (4)
    - HCP10028 bowl drain screw gaskets (4)
    - HCP6709 float valve retaining bracket screws (4)
    - HCP38B throttle shaft seals (8)
    - HCP39C throttle shaft shim washers (4)
    - HCP7120 throttle shaft butterfly valve screws (8)
    - HCP905 throttle shaft e-clips (2)

    HCP18731 Aftermarket Mikuni BS34-series carb STANDARD COMPLETE REBUILD KITS, fits all 1982-84 XJ1100 and 1980-81 XS1100 models. . NOTE: the HCP10028 drain screw gasket is only used on 1980 XS1100 (all models) and on 1981 XS1100 Standard models. Contains enough parts needed to do an entire rack of carbs:
    $ 299.95



    Each of our HCP18876 deluxe complete rebuild kits listed below for XJ1100 and 1980-81 XS1100 models include:

    - all of the items in the HCP18731 standard complete rebuild kits but with the following upgraded parts:
    * the HCP14530 brass bowl drain screws are replaced with the HCP8879 allen-drive bowl drain screws.
    * the HCP1675 standard bowl gaskets are replaced with the HCP18414 hi-performance bowl gaskets

    HCP18876 Aftermarket Mikuni BS34-series carb DELUXE COMPLETE REBUILD KITS, fits all 1982-84 XJ1100 and 1980-81 XS1100 models. Contains all the parts needed to do an entire rack of carbs:
    $ 309.95



    NOTE: good used condition carb bodies, float bowls, and other carb rack components are sometimes available, please inquire.
     
    Last edited: Aug 4, 2020
  11. chacal

    chacal Moderator Moderator Supporting Vendor Premium Member

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    MIKUNI FUEL BOWL FLOATS:

    fs8) OEM and aftermarket Mikuni carb fuel bowl FLOATS, FLOAT PINS, AND SHIMS, brand new replacement units.

    NOTE: the float pin on Mikuni carbs is held to the float posts in the carb body via a friction fit on one end of the pin, and it is not uncommon for these pins to become seized in the posts.........however, one end of the pin is not (from the factory) "mushroomed"................if yours are, it's probably because someone was pounding at it with a punch trying to get it loose, and weren't able to. Any amount of "swollen" or mushrooming of the end of the pin should be gently removed with a file or similar tool, before pin extraction is attempted.

    But even in the best of cases, because of the "friction-fit" design of these pins, removing them can be a tricky process. We then recommend you try this trick:

    and use a proper sized center-punch (like our HCP17638) to gently punch out the pin. Some good info and images can be found here:

    http://xjbikes.com/forums/index.php?threads/17628

    and

    http://xjbikes.com/forums/index.php?threads/19168


    But whatever you do, don't try to "force" it out, or it might end up like this:

    http://xjbikes.com/forums/index.php?threads/17843



    HCP17638 Aftermarket miniature hand-held CENTER PUNCH, proper sized thin point tip is the perfect size for driving out the float pins on Mikuni carbs. Adjustable punch force control and a knurled, sure-grip handle makes this a "must-have" tool when working on your carbs.
    $ 18.95

    HCP17689 Aftermarket replacement PUNCH TIP for the HCP17638 center punch above.
    $ 4.95



    HCP5188 OEM Mikuni FLOAT, float only (pin is not included and must be ordered separate), fits all XJ550, 1986-88 FZ600, 1986-1990 YX600 Radian, and XJ650 Turbo models. NOTE: the float pin tube on this float bracket is bushed as original. Each:
    $ 42.95

    HCP5188SET4 OEM Mikuni FLOATS, set of 4:
    $ 164.95


    HCP9940 Aftermarket Mikuni FLOAT and FLOAT PIN SET, fits all XJ550, 1986-88 FZ600, 1986-1990 YX600 Radian, and XJ650 Turbo models. NOTE: the float pin tube on this float bracket is not bushed as are the originals. Each:
    $ 29.95

    HCP9940SET4 Aftermarket Mikuni FLOAT and FLOAT PIN SETS, set of 4:
    $ 109.95



    HCP9944 OEM Mikuni FLOAT, fits all 1984-85 FJ600, XJ700-X, XJ750-X, all XJ900RK, RL, N/FN, and F models, XJ1100, and all 1980-81 XS1100 models. Float pin is not included. NOTE: the float pin tube on this float bracket is bronze-bushed as original. Also fits the following models: 1980-82 SR250, 1982-83 XS400 Maxim and Seca, XS650 G/H/SH/SJ/SK, 1984-85 FJ1100, 1987 FJ1200 and 1989-93 FJ1200 carbs. Each:
    $ 59.95

    HCP9944SET4 OEM Mikuni FLOATS, set of 4:
    $ 229.95


    HCP1668 Aftermarket Mikuni FLOAT and PIN SET, fits all 1984-85 FJ600, XJ700-X, XJ750-X, all XJ900RK, RL, N/FN, and F models, XJ1100, and all 1980-811 XS1100 models. Float pin is included. NOTE: the float pin tube on this float bracket is bronze-bushed as original. Also fits the following models: 1980-82 SR250, 1982-83 XS400 Maxim and Seca, XS650 G/H/SH/SJ/SK, 1984-85 FJ1100, 1987 FJ1200 and 1989-93 FJ1200 carbs. Each:
    $ 29.95

    HCP1668SET4 Aftermarket Mikuni FLOAT and PIN SETS, set of 4:
    $ 114.95



    HCP23266 OEM Mikuni brass FLOAT, fits all 1978-79 XS1100 models. Float pin is not included. NOTE: the 1980-81 style plastic floats can be used in place of these original brass “barrel” floats. Each:
    $ 54.95

    HCP23266SET4 OEM Mikuni brass FLOATS, set of 4:
    $ 209.95



    HCP23267 Aftermarket Mikuni brass FLOAT, fits all 1978-79 XS1100 models. Float pin is not included. NOTE: the 1980-81 style plastic floats can be used in place of these original brass “barrel” floats. Each:
    $ 19.95

    HCP23267SET4 Aftermarket Mikuni brass FLOATS, set of 4:
    $ 69.95



    HCP22367 OEM Mikuni FLOAT, fits all 1992-98 XJ600 Seca II models. Float pin is not included. Each:
    $ 62.95

    HCP22367SET4 OEM Mikuni FLOATS, set of 4:
    $ 239.95




    HCP5190 OEM Mikuni FLOAT PIN, fits all XJ550, 1984-85 FJ600, 1986-88 FZ600, 1986-90 YX600 Radian, XJ650 Turbo, XJ700-X, XJ750-X, all XJ900RK, RL. N/FN, and F models, XJ1100, and all XS1100 models, each:
    $ 4.95

    HCP5190SET4 OEM Mikuni FLOAT PINS, set of 4:
    $ 17.95


    HCP14532 Aftermarket Mikuni FLOAT PIN, fits all XJ550, 1984-85 FJ600, 1986-88 FZ600, 1986-90 YX600 Radian, XJ650 Turbo, XJ700-X, XJ750-X, all XJ900RK, RL. N/FN, and F models, XJ1100, and all XS1100 models, each:
    $ 3.95

    HCP14532SET4 Aftermarket Mikuni FLOAT PINS, set of 4:
    $ 13.95



    HCP22366 Aftermarket Mikuni FLOAT PIN, fits all 1992-98 XJ600 Seca II models, each:
    $ 5.95

    HCP22366SET4 Aftermarket Mikuni FLOAT PINS, set of 4:
    $ 23.50



    Unlike the Hitachi carbs, Mikuni carb floats used a precise-fitting hinge pin to secure the float to the formed "tube" that the float pin slides thru on the float bracket arm. This design feature results in a float that typically has very little side-to-side "slop" in its motion and movement. Any slop that does exist can, however, allow a bit of erratic movement in the float on the pin, and can contribute to difficulties with getting the fuel level set properly and consistently on these carbs

    We offer some very precise SHIMMING WASHERS that allow you to take up this slack. Unfortunately, due to variations in the machining of the float post inside distance on various car bodies, there is no "one-size-fits-all" solution that we can offer as to what thickness shims are going to be correct to use. The best guidance that we can offer is that you want to eliminate equal amounts of slop on both sides of the float pin tube, while still allowing for enough clearance on both sides to eliminate any chance of the float binding on the pin.

    Our research shows that a typical carb body on the BS28 series carbs (XJ550 models) will have float posts that have approximately an 18.20mm inside-to-inside distance, at the level where the pin goes thru the float posts. The pin tube on the float, however, is only about 17.60 - 17.80mm wide.......giving a total amount of "slop of 0.60mm between the pin tube and the float posts......note that this 0.50mm of slop is equally divided on both ends of the float pin tube, resulting in a clearance of approximately 0.25mm on each side of the pin tube.

    The BS30 series carbs (used on XJ650 Turbo models) will have float posts that have approximately an 18.10mm inside-to-inside distance, at the level where the pin goes thru the float posts. The pin tube on the float, however, is only about 17.60 - 17.80mm wide.......giving a total amount of "slop of 0.50mm between the pin tube and the float posts......note that this 0.50mm of slop is equally divided on both ends of the float pin tube, resulting in a clearance of approximately 0.25mm on each side of the pin tube.

    The BS33 series carbs (used on XJ700-X and XJ750-X models) will have float posts that have approximately an 18.20mm inside-to-inside distance, at the level where the pin goes thru the float posts. The pin tube on the float, however, is only about 17.80mm wide.......giving a total amount of "slop of 0.40mm between the pin tube and the float posts......note that this 0.40mm of slop is equally divided on both ends of the float pin tube, resulting in a clearance of approximately 0.20mm on each side of the pin tube.

    The BS34/35/36 series carbs (used on XJ900 and XJ1100 models) have very precise and minimal clearances between the float posts and the float pin tube on the float, and thus never require additional shimming.

    Our thoughts and experience shows that you can safely reduce this clearance to 0.20mm per side.


    HCP18328 Aftermarket float pin tube SHIMMING WASHER, for use with all Hitachi original floats. Each stainless steel shim measures 0.0254mm thickness. Use as required or in conjunction with other size shimming washers to take up the proper amount of slop. Each:
    $ 1.50

    HCP18328SET8 Aftermarket float pin tube SHIMMING WASHER, set of 8:
    $ 7.95


    HCP18329 Aftermarket float pin tube SHIMMING WASHER, for use with all Hitachi original floats. Each stainless steel shim measures 0.0508mm thickness. Use as required or in conjunction with other size shimming washers to take up the proper amount of slop. Each:
    $ 1.50

    HCP18329SET8 Aftermarket float pin tube SHIMMING WASHER, set of 8:
    $ 7.95


    HCP18330 Aftermarket float pin tube SHIMMING WASHER, for use with all Hitachi original floats. Each stainless steel shim measures 0.0762mm thickness. Use as required or in conjunction with other size shimming washers to take up the proper amount of slop. Each:
    $ 1.50

    HCP18330SET8 Aftermarket float pin tube SHIMMING WASHER, set of 8:
    $ 7.95


    HCP18331 Aftermarket float pin tube SHIMMING WASHER, for use with all Hitachi original floats. Each stainless steel shim measures 0.1016mm thickness. Use as required or in conjunction with other size shimming washers to take up the proper amount of slop. Each:
    $ 1.50

    HCP18331SET8 Aftermarket float pin tube SHIMMING WASHER, set of 8:
    $ 7.95


    HCP18332 Aftermarket float pin tube SHIMMING WASHER, for use with all Hitachi original floats. Each stainless steel shim measures 0.1270mm thickness. Use as required or in conjunction with other size shimming washers to take up the proper amount of slop. Each:
    $ 1.50

    HCP18332SET8 Aftermarket float pin tube SHIMMING WASHER, set of 8:
    $ 7.95


    HCP18333 Aftermarket float pin tube SHIMMING WASHER, for use with all Hitachi original floats. Each stainless steel shim measures 0.1524mm thickness. Use as required or in conjunction with other size shimming washers to take up the proper amount of slop. Each:
    $ 1.50

    HCP18333SET8 Aftermarket float pin tube SHIMMING WASHER, set of 8:
    $ 7.95



    HCP18334 Aftermarket float pin tube SHIMMING WASHER, for use with all Hitachi original floats. Each stainless steel shim measures 0.1778mm thickness. Use as required or in conjunction with other size shimming washers to take up the proper amount of slop. Each:
    $ 1.50

    HCP18334SET8 Aftermarket float pin tube SHIMMING WASHER, set of 8:
    $ 7.95



    HCP18335 Aftermarket float pin tube SHIMMING WASHER, for use with all Hitachi original floats. Each stainless steel shim measures 0.2032mm thickness. Use as required or in conjunction with other size shimming washers to take up the proper amount of slop. Each:
    $ 1.50

    HCP18335SET8 Aftermarket float pin tube SHIMMING WASHER, set of 8:
    $ 7.95



    HCP18336 Aftermarket float pin tube SHIMMING WASHER, for use with all Hitachi original floats. Each stainless steel shim measures 0.2540mm thickness. Use as required or in conjunction with other size shimming washers to take up the proper amount of slop. Each:
    $ 1.50

    HCP18336SET8 Aftermarket float pin tube SHIMMING WASHER, set of 8:
    $ 7.95




    FLOAT BOWL GASKETS & O-RINGS:

    OEM bowl gaskets are made from a graphite impregnated board material, while the standard-duty aftermarket gaskets are made from a treated fiber (cardboard) type material. We recommend the use of the aftermarket hi-performance gaskets which are designed to slightly swell in the presence of petroleum products (fuel or oil), thus creating a super-tight, leak-proof flange seal. These die-cut replacement carb bowl-to-carb body gaskets correctly replace your torn or leaking originals. NOTE: float bowl gaskets are already included in all of our lower end and complete carb rebuild kits listed above.

    Note that the XJ650 Turbo body used a shape-molded o-ring in place of a standard style gasket.


    For all XJ550, 1986-88 FZ600, and 1986-1990 YX600 Radian models:

    HCP5182 OEM Mikuni carb standard duty FLOAT BOWL GASKET, each:
    $ 17.95

    HCP5182SET4 OEM Mikuni carb standard duty FLOAT BOWL GASKETS, set of 4:
    $ 69.95


    HCP863 Aftermarket Mikuni carb standard duty FLOAT BOWL GASKET, each:
    $ 11.95

    HCP863SET4 Aftermarket Mikuni carb standard duty FLOAT BOWL GASKETS, set of 4:
    $ 39.95


    HCP18412 Aftermarket Mikuni carb hi-performance FLOAT BOWL GASKET, each:
    $ 12.95

    HCP18412SET4 Aftermarket Mikuni carb performance FLOAT BOWL GASKETS, set of 4:
    $ 42.95



    For 1992-98 XJ600 Seca II and 1992-2002 XJ600 Euro models:

    HCP26565 OEM carb bowl-to-body rubber FLOAT BOWL O-RING, for all 1992-98 XJ600 Seca II and 1996-2002 XJ600 Euro models, each:
    $ 21.95

    HCP26565SET4 OEM carb bowl-to-body rubber FLOAT BOWL O-RINGS, set of 4:
    $ 82.95


    HCP19793 Aftermarket carb bowl-to-body rubber FLOAT BOWL O-RING, for all 1992-98 XJ600 Seca II and 1996-2002 XJ600 Euro models, each:
    $ 14.95

    HCP19793SET4 Aftermarket carb bowl-to-body rubber FLOAT BOWL O-RINGS, set of 4:
    $ 49.95



    HCP26566 OEM carb bowl-to-body rubber FLOAT BOWL O-RING, for all 1992-1995 XJ600 Euro models. Also fits: 1989 FZR600, 1990-99 FZR600R, 1989 FZR1000 (California only). 1990-95 FZR1000, 1994 and 1996 and 1998 YZF750R, 1997 YZF750, and 1992-93 TDM850 models. Each:
    $ 11.95

    HCP26566SET4 OEM carb bowl-to-body rubber FLOAT BOWL O-RINGS, set of 4:
    $ 42.95



    For XJ650 Turbo models:

    HCP5222 OEM carb bowl-to-body rubber FLOAT BOWL O-RING, for all XJ650 Turbo models, each:
    $ 29.95

    HCP5222SET4 OEM carb FLOAT BOWL O-RINGS, set of 4:
    $ 99.95


    HCP15594 Aftermarket carb bowl-to-body rubber FLOAT BOWL O-RING, for all XJ650 Turbo models, each:
    $ 14.95

    HCP15594SET4 Aftermarket carb FLOAT BOWL O-RINGS, set of 4:
    $ 54.95



    For all FJ600, XJ700-X, XJ750-X, and all XJ900RK, RL, N/FN, and F models:

    NOTE: all of the following oem and aftermarket float bowl gaskets have a slightly elongated cut-out for the choke tube slot area (compared to the original gaskets); this feature does not present any mounting or sealing issues.

    HCP8563 OEM Mikuni carb standard duty FLOAT BOWL GASKET, each:
    $ 12.95

    HCP8563SET4 OEM Mikuni carb standard duty FLOAT BOWL GASKETS, set of 4:
    $ 47.95


    HCP1674 Aftermarket Mikuni carb standard duty FLOAT BOWL GASKET, standard grade, un-treated gasket material, each:
    $ 4.95

    HCP1674SET4 Aftermarket Mikuni carb standard duty FLOAT BOWL GASKETS, set of 4:
    $ 18.95


    HCP15791 Aftermarket Mikuni carb standard duty FLOAT BOWL GASKET, premium grade, treated with a non-stick coating like the originals, each:
    $ 6.95

    HCP15791SET4 Aftermarket Mikuni carb standard duty FLOAT BOWL GASKETS, set of 4:
    $ 24.95


    HCP18413 Aftermarket Mikuni carb hi-performance FLOAT BOWL GASKET, each:
    $ 8.95

    HCP18413SET4 Aftermarket Mikuni carb hi-performance FLOAT BOWL GASKETS, set of 4:
    $ 32.95



    For all 1980-84 XS650, all XJ1100, and 1980-81 XS1100 models:

    HCP6575 OEM Mikuni carb standard duty FLOAT BOWL GASKET, each:
    $ 18.95

    HCP6575SET4 OEM Mikuni carb standard duty FLOAT BOWL GASKETS, set of 4:
    $ 72.95


    HCP1675 Aftermarket Mikuni carb standard duty FLOAT BOWL GASKET, standard grade, un-treated gasket material, each:
    $ 8.50

    HCP1675SET4 Aftermarket Mikuni carb standard duty FLOAT BOWL GASKETS, set of 4:
    $ 29.95


    HCP16644 Aftermarket Mikuni carb standard duty BOWL GASKET, premium grade, treated with a non-stick coating like the originals, each:
    $ 9.95

    HCP16644SET4 Aftermarket Mikuni carb standard duty BOWL GASKETS, set of 4:
    $ 34.95


    HCP18414 Aftermarket Mikuni carb hi-performance FLOAT BOWL GASKET, each:
    $ 8.95

    HCP18414SET4 Aftermarket Mikuni carb hi-performance FLOAT BOWL GASKETS, set of 4:
    $ 32.95



    For all 1978-79 XS1100 models:

    HCP23532 OEM Mikuni carb standard duty FLOAT BOWL GASKET, standard grade, un-treated gasket material, each:
    $ 24.95

    HCP23532SET4 OEM Mikuni carb standard duty FLOAT BOWL GASKETS, set of 4:
    $ 89.95


    HCP20535 Aftermarket Mikuni carb standard duty FLOAT BOWL GASKET, standard grade, un-treated gasket material, each:
    $ 8.95

    HCP20535SET4 Aftermarket Mikuni carb standard duty FLOAT BOWL GASKETS, set of 4:
    $ 29.95


    HCP23531 Aftermarket Mikuni carb hi-performance FLOAT BOWL GASKET, each:
    $ 9.95

    HCP23531SET4 Aftermarket Mikuni carb standard duty FLOAT BOWL GASKETS, set of 4:
    $ 34.95


    NOTE: if you use any type of sealant on these gaskets, use it on the BOWL side of the gasket (something like Permatex Copper Spray-A-Gasket is a fine choice). On the carb body side of the gasket, use a light oil....like Marvel Mystery Oil or the like....and barely moisten the gasket surface. This will allow the new gasket to soften slightly and allows the gasket to form itself to the raised mounting ridge that is cast onto the carb body mating flange.....and also allows for an easy, no-stick removal of the float bowl in the future!




    HCP26218 Aftermarket float bowl FUEL LEVEL TUBE ADAPTER TOOL, for use on almost all Mikuni carb bowls which do not have a tube nipple cast into the bowl drain output port (note that XJ600 Seca II, XJ1100, and XS1100 models do have a cast-in bowl drain nipple, and thus cannot use (nor need) this product). Unlike Hitachi carbs, Mikuni float bowls do not have a permanent float bowl drain outlet port fitting which the clear tube fuel level gauge can be attached onto; nope, there's just an empty hole there. Yamaha supplied dealership service departments with a special o-ringed brass adapter fitting that pops into this hole, and which could be used during fuel-level checks….moving this (non-permanent) adapter from bowl-to-bowl as the fuel-level checking process proceeded. This reproduction o-ringed aluminum adapter properly duplicates the function of the original (note: for a permanent adapter solution, you can use the HCP8494 bowl drain nipples below).
    $ 11.95


    HCP8494 Aftermarket float bowl DRAIN NIPPLE, for all Mikuni carb bowls on XJ550, XJ650 Turbo, XJ700-X, XJ750-X, XJ900 models (note that XJ600 Seca II, XJ1100, and XS1100 models do have a cast-in bowl drain nipple, and thus cannot use (nor need) this product). Unlike Hitachi carbs, Mikuni float bowls do not have a permanent float bowl drain outlet port fitting which the clear tube fuel level gauge can be attached to; no, there's just an empty hole there. The factory had a special o-ringed brass adapter fitting that fit into this hole that would be used during fuel-level checks, but very few people have that adapter and even it is somewhat cumbersome to use. These precisely machined nipples are designed for permanent installation into the Mikuni float bowls----just tap them in place, they are a friction-fit----and them you can slip the fuel-level gauge tube directly onto the protruding end of the fitting. Simple 20-second installation: clean the inside of the drain port in the bowl, use a bit of silicone lube on the adapter, place proper end in drain port, and gently tap in place with a hammer. Once installed, it's leak-free but can still be removed (not easily, but it can!), in case your preferences ever change in the future. Protrudes approximately 1/8" from the drain port, enough to install the clear tube gauge but not enough to interfere with other carb functions. Looks original once installed. Fits Mikuni carbs used on all XJ550 models, XJ650 Turbo, XJ700-X, XJ750-X, and XJ900 models. Use 1 per float bowl. Each:
    $ 10.95

    HCP8494SET4 Aftermarket float bowl DRAIN NIPPLES, for Mikuni carbs, set of 4:
    $ 34.95




    HCP1408SS Aftermarket STAINLESS STEEL WIRE-BRISTLE CLEANING BRUSH, 8.0mm diameter, great for the throttle shaft bore and the emulsion tube bore within the carb body on all Hitachi and Mikuni carbs, and is also the correct size for the float bowl fuel outlet port on Mikuni carbs bowls (except XJ600 Seca II, XJ1100, or XS1100 model bowls). Highly recommended to be used to clean and scour the drain port hole before using either of the above Mikuni bowl adapter fitting or drain nipples.
    $ 5.95




    MIKUNI CARB FLOAT BOWL HARDWARE:

    bds2) OEM and aftermarket Mikuni carb bowl-to-body MOUNTING SCREW, available in a variety of styles, materials, and finishes. All Mikuni model carbs originally used an alloy steel, panhead, phillips-drive, with a zinc-plated finish, and used an integral lockwasher (except for the 1992-98 XJ600 Seca II models, which used lockwashers only on the screws that secured the idle speed support bracket to the bowls at its 3 mounting positions; all of the other bowl screws did not use lockwashers).

    Current OEM and most of the aftermarket screws do not have the integral lockwasher, and a separate lockwasher must be ordered from the selection listed further below for those models that require them.

    Here are some quick guides that shows the different head and drive styles:



    https://www.boltdepot.com/fastener-information/Printable-Tools/Type-Chart.pdf

    http://www.oocities.org/dtmcbride/home_garden/fasteners.html


    For XJ550, FZ600, and YX600 Radian models:

    HCP3696 OEM Mikuni carb bowl-to-body MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive. Use 4 per bowl, each:
    $ 2.50

    HCP3696SET4 OEM Mikuni carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 9.50

    HCP3696SET16 OEM Mikuni carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 34.00



    HCP5482 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive. Use 4 per bowl, each:
    $ 1.00

    HCP5482SET4 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 3.50

    HCP5482SET16 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 8.95



    HCP21356 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREW, 18-8 stainless-steel, panhead, phillips-drive. Use 4 per bowl, each:
    $ 1.50

    HCP21356SET4 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 4.95

    HCP21356SET16 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 12.95



    HCP5486 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREW, phillips-drive panhead screw with gold chromate finish. Has an integral lockwasher. Use 4 per bowl, each:
    $ 1.95

    HCP5486SET4 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 7.50

    HCP5486SET16 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 22.95



    HCP5485 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREW, 18-8 stainless-steel, polished button head, hex-drive. Use 4 per bowl, each:
    $ 1.50

    HCP5485SET4 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 4.95

    HCP5485SET16 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 10.95



    HCP5483 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREW, 18-8 stainless steel, smooth polished socket head, hex-drive. Use 4 per bowl, each:
    $ 1.50

    HCP5483SET4 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 5.25

    HCP5483SET16 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 14.95



    HCP5484 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREW, black oxide-coated steel, ribbed socket head, hex-drive. Use 4 per bowl, each:
    $ 1.50

    HCP5484SET4 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 4.95

    HCP5484SET16 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 10.95




    For 1992-98 XJ600 Seca II models:

    NOTE: these models use short mounting screws, without lockwashers, in all positions except for the three (3) screws that hold the idle speed bracket to the #2 and #3 carb bowls ---- and those 3 long screws do require the use of a lockwasher.

    1992-98 models originally used bright (zinc-plated) fasteners, while the 1998 models used black fasteners.


    HCP3696 OEM Mikuni carb bowl-to-body short MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive. Use 4 per bowl, each:
    $ 2.50

    HCP3696SET4 OEM Mikuni carb bowl-to-body short MOUNTING SCREWS, set of 4:
    $ 9.50

    HCP3696SET13 OEM Mikuni carb bowl-to-body short MOUNTING SCREWS, set of 13:
    $ 27.95



    HCP5482 Aftermarket Mikuni carb bowl-to-body short MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive. Use 4 per bowl, each:
    $ 1.00

    HCP5482SET4 Aftermarket Mikuni carb bowl-to-body short ]MOUNTING SCREWS, set of 4:
    $ 3.50

    HCP5482SET13 Aftermarket Mikuni carb bowl-to-body short MOUNTING SCREWS, set of 13:
    $ 7.95


    HCP6065 Aftermarket Mikuni carb bowl-to-body long MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive. Lockwashers should be used with these screws and can be ordered separate below. Use 3 per rack, each:
    $ 1.50

    HCP6065SET3 Aftermarket Mikuni carb bowl-to-body long MOUNTING SCREWS, set of 3:
    $ 3.95




    HCP21356 Aftermarket Mikuni carb bowl-to-body short MOUNTING SCREW, 18-8 stainless-steel, panhead, phillips-drive. Use 4 per bowl, each:
    $ 1.50

    HCP21356SET4 Aftermarket Mikuni carb bowl-to-body short MOUNTING SCREWS, set of 4:
    $ 4.95

    HCP21356SET13 Aftermarket Mikuni carb bowl-to-body short MOUNTING SCREWS, set of 13:
    $ 10.95


    HCP6067 Aftermarket Mikuni carb bowl-to-body long MOUNTING SCREW, 18-8 stainless-steel, panhead, phillips-drive. Lockwashers should be used with these screws and can be ordered separate below. Use 3 per rack, each:
    $ 1.95

    HCP6067SET3 Aftermarket Mikuni carb bowl-to-body long MOUNTING SCREWS, set of 3:
    $ 5.25




    HCP5485 Aftermarket Mikuni carb bowl-to-body short MOUNTING SCREW, 18-8 stainless-steel, polished button head, hex-drive. Use 4 per bowl, each:
    $ 1.50

    HCP5485SET4 Aftermarket Mikuni carb bowl-to-body short MOUNTING SCREWS, set of 4:
    $ 4.95

    HCP5485SET13 Aftermarket Mikuni carb bowl-to-body short MOUNTING SCREWS, set of 13:
    $ 9.95


    HCP22612 Aftermarket Mikuni carb bowl-to-body long MOUNTING SCREW, 18-8 stainless-steel, polished button head, hex-drive. Lockwashers should be used with these screws and can be ordered separate below. Use 3 per rack, each:
    $ 1.95

    HCP22612SET3 Aftermarket Mikuni carb bowl-to-body long MOUNTING SCREWS, set of 3:
    $ 5.25




    HCP5483 Aftermarket Mikuni carb bowl-to-body short MOUNTING SCREW, 18-8 stainless steel, smooth polished socket head, hex-drive. Use 4 per bowl, each:
    $ 1.50

    HCP5483SET4 Aftermarket Mikuni carb bowl-to-body short MOUNTING SCREWS, set of 4:
    $ 5.25

    HCP5483SET13 Aftermarket Mikuni carb bowl-to-body short MOUNTING SCREWS, set of 13:
    $ 12.95


    HCP22613 Aftermarket Mikuni carb bowl-to-body long MOUNTING SCREW, 18-8 stainless steel, smooth polished socket head, hex-drive. Lockwashers should be used with these screws and can be ordered separate below. Use 3 per rack, each:
    $ 1.95

    HCP22613SET3 Aftermarket Mikuni carb bowl-to-body long MOUNTING SCREWS, set of 3:
    $ 5.25




    HCP5484 Aftermarket Mikuni carb bowl-to-body short MOUNTING SCREW, black oxide-coated steel, ribbed socket head, hex-drive. Use 4 per bowl, each:
    $ 1.50

    HCP5484SET4 Aftermarket Mikuni carb bowl-to-body short MOUNTING SCREWS, set of 4:
    $ 4.95

    HCP5484SET13 Aftermarket Mikuni carb bowl-to-body short MOUNTING SCREWS, set of 13:
    $ 9.95


    HCP22614 Aftermarket Mikuni carb bowl-to-body short MOUNTING SCREW, black oxide-coated alloy steel, ribbed socket head, hex-drive. Lockwashers should be used with these screws and can be ordered separate below. Use 3 per rack, each:
    $ 1.75

    HCP22614SET3 Aftermarket Mikuni carb bowl-to-body short MOUNTING SCREWS, set of 3:
    $ 4.95




    For 1984-85 FJ600, XJ650 Turbo, XJ700-X, XJ750-X, all XJ900RK, RL, N/FN, and F models, XJ1100, and all XS1100 models:

    HCP2940 OEM Mikuni carb bowl-to-body MOUNTING SCREWS. These panhead, phillips-drive, alloy steel screws have a dark grey plated finish, and are approximately 2mm longer than stock, each. Use 4 per bowl, each:
    $ 3.50

    HCP2940SET4 OEM Mikuni carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 13.95

    HCP2940SET16 OEM Mikuni carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 49.95



    HCP2643 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREW, zinc-plated alloy steel, panhead, phillips drive, approximately 2mm longer than stock. Use 4 per bowl, each:
    $ 1.75

    HCP2643SET4 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 5.50

    HCP2643SET16 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 18.95



    HCP1358 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREW, with an integral lock washer as original, panhead, phillips drive, gold chromate finish. Use 4 per bowl, each:
    $ 1.95

    HCP1358SET4 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, with lock washers, set of 4:
    $ 6.95

    HCP1358SET16 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, with lock washers, set of 16:
    $ 19.95



    HCP302 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREW, 18-8 stainless steel, panhead, phillips-drive, approximately 2mm longer than stock. Use 4 per bowl, each:
    $ 1.50

    HCP302SET4 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 4.95

    HCP302SET16 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 12.95



    HCP303 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREW, 18-8 stainless-steel, polished button head, hex-drive, approximately 2mm longer than stock. Use 4 per bowl, each:
    $ 1.95

    HCP303SET4 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 5.95

    HCP303SET16 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 14.95



    HCP56 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREW, 18-8 stainless steel, smooth polished socket head, hex-drive, approximately 2mm longer than stock. Use 4 per bowl, each:
    $ 1.95

    HCP56SET4 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 4.95

    HCP56SET16 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 13.95



    HCP58 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREW, black oxide-coated alloy steel, ribbed socket head, hex-drive, approximately 2mm longer than stock. Use 4 per bowl, each:
    $ 1.50

    HCP58SET4 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 4.95

    HCP58SET16 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 9.95




    bds3) OEM and aftermarket Mikuni carb bowl-to-body mounting screw LOCK WASHER, available in a variety of styles, materials, and finishes. All Mikuni model carbs (except 1992-98 XJ600 Seca II models) originally used a panhead, phillips-drive bowl mounting screw that had an integral lockwasher. Current OEM and many of the replacement screws do not have the integral lockwasher, and thus a separate lockwasher should be ordered from the selection listed below:


    For XJ550 and 1992-98 XJ600 Seca II models:

    HCP326 OEM carb bowl mounting screw LOCK WASHER, zinc-plated alloy steel, each:
    $ 1.95

    HCP326SET4 OEM carb bowl mounting screw LOCK WASHERS, set of 4:
    $ 7.50

    HCP326SET16 OEM carb bowl mounting screw LOCK WASHERS, set of 16:
    $ 14.95



    HCP922 Aftermarket carb bowl mounting screw LOCK WASHER, zinc-plated alloy steel, each:
    $ 0.95

    HCP922SET4 Aftermarket carb bowl mounting screw LOCK WASHERS, set of 4:
    $ 3.50

    HCP922SET16 Aftermarket carb bowl mounting screw LOCK WASHERS, set of 16:
    $ 7.95



    HCP336 Aftermarket carb bowl mounting screw LOCK WASHER, 18-8 stainless-steel, each:
    $ 0.95

    HCP336SET4 Aftermarket carb bowl mounting screw LOCK WASHERS, set of 4:
    $ 3.50

    HCP336SET16 Aftermarket carb bowl mounting screw LOCK WASHERS, set of 16:
    $ 7.95



    HCP342 Aftermarket carb bowl mounting screw LOCK WASHER, black oxide-coated alloy steel, each:
    $ 0.95

    HCP342SET4 Aftermarket carb bowl mounting screw LOCK WASHERS, set of 4:
    $ 3.25

    HCP342SET16 Aftermarket carb bowl mounting screw LOCK WASHERS, set of 16:
    $ 8.95



    For XJ650 Turbo, XJ700-X, XJ750-X, all XJ900RK, RL, N/FN, and F models, and XJ1100 models:

    HCP55 OEM Mikuni carb bowl-to-body mounting screw LOCK WASHER, zinc-plated alloy steel, each:
    $ 1.95

    HCP55SET4 OEM Mikuni carb bowl-to-body mounting screw LOCK WASHERS, set of 4:
    $ 7.50

    HCP55SET16 OEM Mikuni carb bowl-to-body mounting screw LOCK WASHERS, set of 16:
    $ 14.95



    HCP913 Aftermarket Mikuni carb bowl-to-body mounting screw LOCK WASHER, zinc-plated alloy steel, each:
    $ 1.00

    HCP913SET4 Aftermarket Mikuni carb bowl-to-body mounting screw LOCK WASHERS, set of 4:
    $ 3.75

    HCP913SET16 Aftermarket Mikuni carb bowl-to-body mounting screw LOCK WASHERS, set of 16:
    $ 5.50



    HCP57 Aftermarket Mikuni carb bowl-to-body mounting screw LOCK WASHER, 18-8 stainless steel, each:
    $ 1.00

    HCP57SET4 Aftermarket Mikuni carb bowl-to-body mounting screw LOCK WASHERS, set of 4:
    $ 3.25

    HCP57SET16 Aftermarket Mikuni carb bowl-to-body mounting screw LOCK WASHERS, set of 16:
    $ 7.95



    HCP59 Aftermarket Mikuni carb bowl-to-body mounting screw LOCK WASHER, e black-oxide coated alloy steel, each:
    $ 1.00

    HCP59SET4 Aftermarket Mikuni carb bowl-to-body mounting screw LOCK WASHERS, set of 4:
    $ 2.95

    HCP59SET16 Aftermarket Mikuni carb bowl-to-body mounting screw LOCK WASHERS, set of 16:
    $ 6.95




    MIKUNI CARB BOWL DRAIN SCREWS:

    g5m) OEM and aftermarket Mikuni carb BOWL DRAIN SCREW....the ones that are always such a bear to remove. OEM screws are bright-plated alloy steel with a panhead, phillips-drive design, and come in both the version WITH the o-ring under the screw head (all XJ550, XJ650 Turbo, all XJ900RK, RL, N/FN, and F models, and XJ1100 models) and the style WITHOUT the o-ring under the screw head (all XJ700-X and XJ750-X models).

    NOTE: If you plan on using the HCP865 or HCP14530 screws WITHOUT any o-rings, we VERY STRONGLY suggest you use the HCP4399 (or HCP16326) drain screws instead, and here's why: for whatever reason that Mikuni/Yamaha decided to use the o-rings on these bowl drain screws, the fact is that in order to make the o-ring land or "groove" (where the o-ring sits), they turned down the shaft of the screw by almost 2mm total, thus turning an M6 sized screw (that's the nominal size of both styles of drain screws) into an M4 sized screw......kind of a "chain only as strong as its weakest link" kinda thing......since the "skinniest" part of the HCP865 (or HCP14530) screw shaft is now just a hair over 4mm diameter, and in effect this is now a M4 (4mm diameter shaft) screw.

    Since these screws tend to get stuck in the bowls after a few years of non-use, I believe what Yamaha discovered very quickly was that these o-ringed type screws are an "in reality" size of just M4---and were getting stuck and shearing off right at that "weakest link" portion of the shaft....the o-ring land.....and that is why they did away with the o-ring land on the later model versions of the Mikuni carbs, and started using an unmodified (non o-ringed) version of the same screw, which is a "true" M6 screw.

    In fact, the o-ringed and non o-ringed screw are identical, it's just that the non o-ringed style screws are not machined for a ring land.

    Aftermarket socket head cap screws are an improved "never-get-stuck-again" version that are made as an 18-8 stainless steel allen head (a/k/a hex-drive socket head cap). This style works much better than the original Yamaha screw; not only is it made of stainless steel, but the larger allen-head design allows for more torque to be applied to the screw, forever ending the stripped/stuck/ruined drain screw problem that has plagued Yamaha owners forever! Note that by their design, the large allen head portion of this drain screw will be located OUTSIDE of the drain screw bore hole in the bowl, and sticks out about 1/4" from the bowl body.


    And if the threaded port in the float bowl where the drain screw fits been injured, or if you want to restore the threads to their like-new condition, this thread chaser tap is what you'll need:

    HCP6335 Aftermarket THREAD CHASER AND CLEAN-UP TAP, made from a high-speed uncoated steel. For the following holes:
    - all Mikuni carb bowl drain screw hole.
    $ 12.95

    HCP28170 Aftermarket thread tap or EZ-out extractor TAP HANDLE, featuring offset tap handles and fully adjustable head for all m3-m12 size taps and size 0 to ½” extractors. This is the proper way to hold a tap or extractor to insure that the force is directed straight down and doesn’t “wobble” as you are cutting, reaming, or extracting. Much better than using pliers or vise-grips to hold the tool……..
    $ 17.95


    NOTE: it is recommended that anti-seize compound be used on the screw threads when fitting screws back into the carb bowl passage.



    Mikuni carb bowl drain screws:

    HCP865 OEM Mikuni carb BOWL DRAIN SCREW, bright plated, alloy steel, panhead, phillips drive drain screw features the machined land just below the head for the acceptance of the HCP4400 o-ring listed below (the o-ring is not included). This style drain screw is used on all XJ550, XJ650 Turbo, all XJ900RK, RL, N/FN, and F models, XJ1100, and all 1981 XS1100 models, although it will also fit all 1984-85 FJ600, 1992-98 XJ600 Seca II, XJ700-X, and XJ750-X models as well (this bikes used a drain screw without an o-ring, but this drain screw is the same size/shape). Is also correct for all of the following models: 1981-83 XS400, 1981 XS650, 1987-88, 1990, and 1995-00 XV535 Virago, 1980-82 SR250, 1981-82 XT250, 1980-82 TT250, 1983 XV500, 1980-81 XT500, 1980-81 SR500, 1982-83 XZ550, 1983-85 XVZ12, 1986-90 XVZ13, 1985-86 and 1989-2007 VMX12 V-Max models. Each:
    $ 10.95

    HCP865SET4 OEM Mikuni carb BOWL DRAIN SCREWS, set of 4:
    $ 39.95


    HCP14530 Aftermarket Mikuni carb BOWL DRAIN SCREW, brass, straight-blade drive drain screw features the machined land just below the head for the acceptance of the sealing o-ring (the o-ring is included). This style drain screw is used on all XJ550, XJ650 Turbo, all XJ900RK, RL, N/FN, and F models, XJ1100, and all 1981 XS1100 models, although it will also fit all 1984-85 FJ600, 1992-98 XJ600 Seca II, XJ700-X, and XJ750-X models as well (this bikes used a drain screw without an o-ring, but this drain screw is the same size/shape). Is also correct for all of the following models: 1981-83 XS400, 1981 XS650, 1987-88, 1990, and 1995-00 XV535 Virago, 1980-82 SR250, 1981-82 XT250, 1980-82 TT250, 1983 XV500, 1980-81 XT500, 1980-81 SR500, 1982-83 XZ550, 1983-85 XVZ12, 1986-90 XVZ13, 1985-86 and 1989-2007 VMX12 V-Max models. Each:
    $ 6.95

    HCP14530SET4 Aftermarket Mikuni carb BOWL DRAIN SCREWS, set of 4:
    $ 24.95



    HCP4400 OEM Mikuni carb bowl drain screw O-RING, for the HCP865 or HCP14530 drain screws listed above. Each:
    $ 2.95

    HCP18664 Aftermarket Mikuni carb bowl drain screw O-RING, for the HCP865 or HCP14530 drain screws listed above. Each:
    $ 2.50




    HCP4399 OEM Mikuni carb BOWL DRAIN SCREW, correct bright plated, alloy steel, panhead, phillips drive drain screw. This style drain screw does NOT use (nor can it accept) an o-ring and is correct for all 1984-85 FJ600, 1986-88 FZ600, 1986-1990 YX600 Radian, 1992-98 XJ600 Seca II, XJ700-X, and XJ750-X models, but can also be used successfully on all XJ550, XJ650 Turbo, all XJ900RK, RL, N/FN, and F models, XJ1100, and all 1981 XS1100 models, as well as all of the following models: 1981-83 XS400, 1981 XS650, 1987-88, 1990, and 1995-00 XV535 Virago, 1980-82 SR250, 1981-82 XT250, 1980-82 TT250, 1983 XV500, 1980-81 XT500, 1980-81 SR500, 1982-83 XZ550, 1983-85 XVZ12, 1986-90 XVZ13, 1985-86 and 1989-2007 VMX12 V-Max models. Each:
    $ 7.95

    HCP4399SET4 OEM Mikuni carb BOWL DRAIN SCREWS, set of 4:
    $ 29.95


    HCP16326 Aftermarket Mikuni carb BOWL DRAIN SCREW, brass, straight-blade drive drain screw. This style drain screw does NOT use (nor can it accept) an o-ring and is correct for all 1984-85 FJ600, 1986-88 FZ600, 1986-1990 YX600 Radian, 1992-98 XJ600 Seca II, XJ700-X, and XJ750-X models, but can also be used successfully on all XJ550, FJ600, XJ650 Turbo, all XJ900RK, RL, N/FN, and F models, XJ1100, and all 1981 XS1100 models, as well as all of the following models: 1981-83 XS400, 1981 XS650, 1987-88, 1990, and 1995-00 XV535 Virago, 1980-82 SR250, 1981-82 XT250, 1980-82 TT250, 1983 XV500, 1980-81 XT500, 1980-81 SR500, 1982-83 XZ550, 1983-85 XVZ12, 1986-90 XVZ13, 1985-86 and 1989-2007 VMX12 V-Max models. Each:
    $ 6.95

    HCP16326SET4 Aftermarket Mikuni carb BOWL DRAIN SCREWS, set of 4:
    $ 24.95




    HCP22879 OEM Mikuni carb BOWL DRAIN SCREW GASKET, for use with the bowl drain screw in the center/bottom of the bowl (and not the bowl drain screw that comes in from the side of the bowl as used on some models). Use 1 per bowl on all 1979-80 XS1100 models, and on 1981 XS1100 Standard models. Each:
    $ 2.95

    HCP22879SET4 OEM Mikuni carb BOWL DRAIN SCREW GASKET, set of 4:
    $ 10.95


    HCP10028 Aftermarket Mikuni carb BOWL DRAIN SCREW GASKET, for use with the bowl drain screw in the center/bottom of the bowl (and not the bowl drain screw that comes in from the side of the bowl as used on some models). Use 1 per bowl on all 1979-80 XS1100 models, and on 1981 XS1100 Standard models. Each:
    $ 1.95

    HCP10028SET4 Aftermarket Mikuni carb BOWL DRAIN SCREW GASKET, set of 4:
    $ 6.95




    ds2) Aftermarket Mikuni carb BOWL DRAIN SCREW. Bright finish 18-8 stainless steel socker head, hex-drive, taper-point screw fits into the drain hole passage of each carb bowl. Works better than the original Yamaha screw; not only is it made of stainless steel, but the larger socket-head design allows for more torque to be applied to the screw, forever ending the stripped/stuck/ruined drain screw problem that has plagued Yamaha owners forever!

    Fits all XJ550, 1984-85 FJ600, 1986-88 FZ600, 1986-1990 YX600 Radian, 1992-98 XJ600 Seca II, XJ700-X, XJ750-X, all XJ900 models, XJ1100, and all 1981 XS1100 carb bowls. The original drain screws on those all models (except the 1984-85 FJ600, 1992-98 XJ600 Seca II, XJ700-X, and XJ750-X) had an integral o-ring, which is not present on this replacement style screw. But the lack of the o-ring on this replacement screw presents absolutely no fit or sealing/leakage issues on those models originally equipped with a bowl drain screw that used an o-ring.

    Note that by their design, the large socket head portion of this drain screw will be located OUTSIDE of the drain screw bore hole in the bowl, and sticks out about 1/8" from the bowl body. This additional length does not cause any problems, and after looking at them (installed) on the carb bowls, at first glance they might look "odd" the way the stick out, but after the third or fourth look, they appear normal and oddly interesting with that extended length.

    NOTE: do NOT "bottom" the heads of these screws against the bowl! Tighten them to 4-5 foot-pounds of torque, just enough to seat them snugly. That is all that is necessary to prevent fuel leakage from the drain port.

    NOTE: on some models, you may have to file away a tiny amount of metal on the outside of the bowl to obtain enough clearance for the head of the screw to clear and seat itself deep enough to fully cut off fuel flow thru the drain port.

    It is recommended that anti-seize compound be used on the screw threads when fitting them into the carb bowl passage.


    HCP8879 Aftermarket Mikuni socket head, hex-drive, 18-8 stainless-steel carb BOWL DRAIN SCREW, each:
    $ 9.95

    HCP8879SET4 Aftermarket Mikuni carb BOWL DRAIN SCREWS, set of 4:
    $ 34.95



    Anti-Seize Lubricants:

    xx1) Fastener ANTI-SEIZE PASTE. Yeah, it's smelly and makes a slippery mess on your fingers, but this stuff is a life-saver for any true wrencher, because it prevents problems down the road. Use it on any metal fastener that does not require a "loctite" thread-locker material to be used. This means on just about every fastener that is carb, engine case, or suspension-related! (except for carb upper and lower rack-mount screws and butterfly valve screws, which do require the use of a thread-lock fluid). If you think that it might, sometime, in the future, need to come off: use anti-seize compound! NOTE: the "base" metal material used in the different anti-seize pastes below do not determine what type of fastener to use such pastes on; it merely signifies what base material is used to create the anti-seize paste. You can use any "base-metal" anti-seize paste on any type of fastener and metal.

    NOTE: the use of anti-seize compounds will result in a TORQUE-MULTIPLYING EFFECT……..the result of a reduction in friction between the threaded contact points……and thus fasteners treated with anti-seize compound should have their torque values reduced by at least 10-15% when installed into steel material, and up to 25% into aluminum materials or other “soft” metals” (such as spark plugs into cylinder heads, or almost any other type of fastener into the engine) …… note that this rule applies only to service manual torque specifications on fasteners that are not indicated to be treated with anti-seize fluid by the factory …. if the factory manual specifies the use of an anti-seize coating, then the specified torque value for that fitting already takes into account the “reduced torque” necessary.

    http://raskcycle.com/techtip/webdoc14.html

    http://www.cncexpo.com/MetricBoltTorqueNm.aspx

    http://www.bmwmotorcycletech.info/sparkplugs.htm

    http://www.antiseize.com/pdf/torque_specifications.pdf


    HCP1264 Aftermarket fastener ANTI-SEIZE PASTE, standard grade aluminum-based in a 1-ounce squeeze tube, for smaller jobs.
    $ 5.95

    HCP1265 Aftermarket fastener ANTI-SEIZE PASTE, standard grade aluminum-based formula in a 4-ounce tub with a brush-lid, for larger jobs.
    $ 7.95

    HCP9784 Aftermarket fastener ANTI-SEIZE PASTE, standard grade aluminum-based formula in an 8-ounce tub with a brush-lid, a lifetime supply for your motorcycle!
    $ 12.95

    HCP9763 Aftermarket fastener ANTI-SEIZE PASTE, standard-grade copper-based formula in an 8-ounce tub with a brush-lid, a lifetime supply for your motorcycle!
    $ 12.95

    HCP9764 Aftermarket fastener ANTI-SEIZE PASTE, premium-grade nickel-based formula in an 8-ounce tub with a brush-lid, a lifetime supply for your motorcycle!
    $ 17.95


    NOTE: the following product(s) can only be shipped via ground transport (which thus eliminates the postal Priority Mail, postal Express Mail, or private carrier Expedited levels of service for this item) and cannot (and will not----don't even ask!) be shipped outside of the continental USA. Additionally, there may be a per-package weight or quantity restriction, and thus multiple-unit orders of this product may have to be shipped in separate packages and will incur additional shipping charges.

    HCP20860 Aftermarket industrial-strength ASSEMBLY LUBE, in a standard 12-ounce aerosol can. Heavy-duty formula includes graphite to not only enhance and speed up the penetrant action, but also gets down into the pores of the metal for the greatest possible lubrication possible. Won't wash away, protect against rust and corrosion, stable from 0-degrees up to 250-F. This fluid is also a great choice for use as a drive cable lubricant.
    $ 21.95

    HCP20862 Aftermarket super-duty ASSEMBLY LUBE, in a generous 10-ounce aerosol can. The cat's-meow of lubricants, infused with pure moly disulfide, it goes on wet and then dries in 1-2 hours to a super-slick, high-pressure, hi-temp, bearing-like finish which provides the ultimate level of protection. Prevents rust and corrosion, won't wash off, throw off, and won't attract dust or dirt. Surfaces must be clean and dry of previous oils, etc. before application. Can even be used as an engine, tranny, and drivetrain assembly lube!
    $ 24.95

    HCP20863 Aftermarket super-duty GRAPHITE LUBE, in a generous 10-ounce aerosol can. The 800-pound gorilla of lubricants, it's infused with pure graphite, goes on wet, and then dries in 10 minutes to a super-slick, high-pressure, bearing-like finish which provides the ultimate level of protection. Prevents rust, won't wash off, throw off, and won't attract dust or dirt. Surfaces must be clean and dry of previous oils, etc. before application. Can be used as an engine assembly lube, bearing or bushing pre-lube, great for lock cylinders, and all metallic sliding surfaces. Use where dusty or dirty conditions render oil-based lubricants ineffective or undesirable.
    $ 21.95




    NOTE: good used carb bodies and float bowls are also available, please inquire.
     
    Last edited: Oct 4, 2021
  12. chacal

    chacal Moderator Moderator Supporting Vendor Premium Member

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    MIKUNI FUEL SYSTEM HARDWARE:

    MIKUNI CARB HARDWARE KITS:

    chk1) While you’re completing your carb rebuild efforts, you’ve probably noticed that many of the fasteners and associated hardware pieces are buggered, rusty, incorrect, or worse. Since your carbs will soon be performing as new, why not make them look like new, too? These MIKUNI CARB FASTENERS KITS and MIKUNI CARB HARDWARE KITS contain all of the major external hardware or fasteners needed to refresh them like a pro, and at an affordable price.


    Mikuni Carb Fasteners Kits:

    These fastener kits contain all of the major and minor fasteners that you’ll need to refresh a set of carbs, and are available in a variety of material and finishes to suit your particular preferences. NOTE: throttle shaft hardware (butterfly valves screws, shaft end clips, etc) and bowl drain screws are not included in any of these kits, since those items are already contained in the various carb rebuild kits listed previously.

    Each kit contains the following items in matching finishes and head styles:
    * matched set of carb “hat” screws.
    * matched set of carb bowl-to-body screws and lockwashers.
    * matched set of carb upper rack bracket screws.
    * matched set of carb lower rack bracket screws (the XJ550 kits also contain the lockwashers, which were not used on any other models).
    * matched set of starter shaft clamp retaining screw and lockwasher (these screws are not included on some kits, see details).
    * matched set of starter plunger bracket-to-shaft set screws.
    * matched set of carb idle speed bracket-to-lower rack bracket screw and lockwasher.
    * an idle speed screw plastic washer (not original, but a great addition to have!)
    * XJ650 Turbo hardware kits also contain the fuel pressure regulator to mounting bracket net and washer, the fuel pressure regulator/check valve-to-hat bracket screws and lockwashers, and the check valve to mounting bracket screw and lockwasher.
    * XJ1100 hardware kits also contain the fuel distribution valve-to-bracket screws and washers, and its bracket-to-hat screws and lockwasher.

    Here are some quick guides that shows the different head and drive styles:



    https://www.boltdepot.com/fastener-information/Printable-Tools/Type-Chart.pdf

    http://www.oocities.org/dtmcbride/home_garden/fasteners.html


    And since you'll want your new hardware to not only look nice, but fit well, the following professional quality tool-steel thread chaser taps will allow you to either "clean-up" or re-thread distorted or stripped threads in all metals, soft (aluminum) to hard (steel).

    NOTE: THE FOLLOWING TOOL KITS ARE AVAILABLE FOR RENTAL!!: some tools are a one-time or infrequent use tool, so it may be more economical for you to rent them from us, rather than to purchase outright. Please see the “rental” section within the THE TOOLBOX section of our catalog at:

    http://xjbikes.com/forums/index.php?threads/xj-parts-catalog-section-p-the-toolbox.44630

    and review the availability and procedures in the TOOL RENTAL section.

    HCP28194 Aftermarket carb body THREAD CHASER BASIC TAPS SET. This basic set of 6 taps contains all of the different sizes for the most commonly needed threaded holes on all Hitachi and Mikuni carb bodies. Almost all threaded will exhibit some type of thread wear (distortion) or minor injury that should be repaired, especially to the smaller, more “fragile” threads on the mixture screw bores, the fuel and are jets threads, the bowl, hat, and bracket mounting holes, etc. Running thread taps thru all of these threaded holes in the carb bodies will not only make the re-assembly process easier, smoother, and more secure, but there is a certain satisfaction and surety that comes with having like-new threads that can only be described as “machinist porn” (those of you that know, will know what I mean!). Correct size taps will do the upper and lower rack bracket holes, the float bowl attachment holes, the float bowl drain screw holes, the carb hat attachment holes, synch screws and idle speed bolt holes, the Mikuni float valve seat bracket hole, Mikuni main jet needle retainer plate holes (inside the vacuum piston), all air jet and fuel jet holes, enrichment plunger lifter bracket holes, and throttle shaft butterfly valve mounting holes. Comes with a can of cutting fluid and a t-handle tap holder tool. Note that unlike the complete taps set below (HCP28121), the taps for the Hitachi float valve seat and the choke plunger seat bores (on all Hitachi and Mikuni models) are not included in this set (those larger taps are what add significantly to the cost of the complete taps set). NOTE: due to the reality that you may use these tools only once, it is suggested that you use the tool rental option for this tap set. However, under the rental option, if you use the taps for actual thread tapping (cutting brand new threads in a newly drilled hole), then the return option is not allowed!
    $ 99.95

    HCP28121 Aftermarket carb body THREAD CHASER COMPLETE TAPS SET. This complete set of 9 taps contains all of the different sizes of threads found on all Hitachi and Mikuni carb bodies. Almost all threaded will exhibit some type of thread wear (distortion) or minor injury that should be repaired, especially to the smaller, more “fragile” threads on the mixture screw bores, the fuel and are jets threads, etc. Running thread taps thru all of the threaded holes in the carb bodies will not only make the re-assembly process easier, smoother, and more secure, but there is a certain satisfaction and surety that comes with having like-new threads that can only be described as “machinist porn” (those of you that know, will know what I mean!). Correct size taps will do the upper and lower rack bracket holes, the float bowl attachment holes, the float bowl drain screw holes, the carb hat attachment holes, synch screws and idle speed bolt holes, the choke plunger seat holes, the Mikuni float valve seat bracket hole, the Hitachi float valve seat hole, Mikuni main jet needle retainer plate holes (inside the vacuum piston), all air jet and fuel jet holes, enrichment plunger lifter bracket holes, and throttle shaft butterfly valve mounting holes. Comes with a can of cutting fluid and a t-handle tap holder tool. NOTE: due to the expense of this kit, and the reality that you may use these tools only once, it is suggested that you use the tool rental option for this tap set. However, under the rental option, if you use the taps for actual thread tapping (cutting brand new threads in a newly drilled hole), then the return option is not allowed!
    $ 149.95



    HCP21614 Aftermarket BS28 series MIKUNI CARB FASTENERS KIT, featuring zinc-plated alloy steel components with original-style panhead, phillips-drive screws. Note that the starter bracket set screws contained in this kit do not have the original phillips-drive style screws, but feature straight-slot drive set screws instead. The starter cable bracket clamp screws are not included in this kit. Fits all XJ550 model carbs.
    $ 44.95

    HCP21619 Aftermarket BS32 series MIKUNI CARB FASTENERS KIT, featuring zinc-plated alloy steel components with original-style panhead, phillips-drive screws. Note that the starter bracket set screws contained in this kit do not have the original phillips-drive style screws, but feature straight-slot drive set screws instead. The starter cable bracket clamp screws are not included in this kit. Fits all 1984-85 FJ600 model carbs.
    $ 44.95

    HCP21624 Aftermarket BS30 series MIKUNI CARB FASTENERS KIT, featuring zinc-plated alloy steel components with original-style panhead, phillips-drive screws. Note that the starter cable bracket clamp screws are not contained in this kit. Fits all XJ650 Turbo model carbs.
    $ 49.95

    HCP21629 Aftermarket BS33 series MIKUNI CARB FASTENERS KIT, featuring zinc-plated alloy steel components with original-style panhead, phillips-drive screws. Note that the starter cable bracket clamp screws are not contained in this kit. Fits all XJ700-X and XJ750-X model carbs.
    $ 47.95

    HCP21634 Aftermarket BS35/36 series MIKUNI CARB FASTENERS KIT, featuring zinc-plated alloy steel components with original-style panhead, phillips-drive screws. Note that the starter cable bracket clamp screws are not contained in this kit. Fits all XJ900 model carbs.
    $ 47.95

    HCP21639 Aftermarket BS34 series MIKUNI CARB FASTENERS KIT, featuring zinc-plated alloy steel components with original-style panhead, phillips-drive screws. Note that the starter cable bracket clamp screws are not contained in this kit. Fits all XJ11100 model carbs.
    $ 44.95



    HCP21615 Aftermarket BS28 series MIKUNI CARB FASTENERS KIT, featuring bright 18/8 stainless steel components with original-style panhead, phillips-drive screws. Note that the starter bracket set screws contained in this kit do not have the original phillips-drive style screws, but feature straight-slot drive set screws instead. The starter cable bracket clamp screws are not included in this kit. Fits all XJ550 model carbs.
    $ 47.95

    HCP21620 Aftermarket BS32 series MIKUNI CARB FASTENERS KIT, featuring bright 18/8 stainless steel components with original-style panhead, phillips-drive screws. Note that the starter bracket set screws contained in this kit do not have the original phillips-drive style screws, but feature straight-slot drive set screws instead. The starter cable bracket clamp screws are not included in this kit. Fits all 1984-85 FJ600 model carbs.
    $ 47.95

    HCP21625 Aftermarket BS30 series MIKUNI CARB FASTENERS KIT, featuring bright 18/8 stainless steel components with original-style panhead, phillips-drive screws. Note that the starter cable bracket clamp screws are not contained in this kit. Fits all XJ650 Turbo model carbs.
    $ 57.95

    HCP21630 Aftermarket BS33 series MIKUNI CARB FASTENERS KIT, featuring bright 18/8 stainless steel components with original-style panhead, phillips-drive screws. Note that the starter cable bracket clamp screws are not contained in this kit. Fits all XJ700-X and XJ750-X model carbs.
    $ 47.95

    HCP21635 Aftermarket BS35/36 series MIKUNI CARB FASTENER KIT, featuring bright 18/8 stainless steel components with original-style panhead, phillips-drive screws. Note that the starter cable bracket clamp screws are not contained in this kit. Fits all XJ900 model carbs.
    $ 49.95

    HCP21640 Aftermarket BS34 series MIKUNI CARB FASTENERS KIT, featuring bright 18/8 stainless steel components with original-style panhead, phillips-drive screws. Note that the starter cable bracket clamp screws are not contained in this kit. Fits all XJ11100 model carbs.
    $ 57.95



    HCP21616 Aftermarket BS28 series MIKUNI CARB FASTENERS KIT, featuring bright 18/8 stainless steel components with polished button-head, hex-drive screws. Fits all XJ550 model carbs.
    $ 42.95

    HCP21621 Aftermarket BS32 series MIKUNI CARB FASTENERS KIT, featuring bright 18/8 stainless steel components with polished button-head, hex-drive screws. Fits all 1984-85 FJ600 model carbs.
    $ 44.95

    HCP21626 Aftermarket BS30 series MIKUNI CARB FASTENERS KIT, featuring bright 18/8 stainless steel components with polished button-head, hex-drive screws. Fits all XJ650 Turbo model carbs.
    $ 52.95

    HCP21631 Aftermarket BS33 series MIKUNI CARB FASTENERS KIT, featuring bright 18/8 stainless steel components with polished button-head, hex-drive screws. Fits all XJ700-X and XJ750-X model carbs.
    $ 44.95

    HCP21636 Aftermarket BS35/36 series MIKUNI CARB FASTENERS KIT, featuring bright 18/8 stainless steel components with polished button-head, hex-drive screws. Fits all XJ900 model carbs.
    $ 44.95

    HCP21641 Aftermarket BS34 series MIKUNI CARB FASTENERS KIT, featuring bright 18/8 stainless steel components with polished button-head, hex-drive screws. Fits all XJ11100 model carbs.
    $ 54.95



    HCP21617 Aftermarket BS28 series MIKUNI CARB FASTENERS KIT, featuring bright 18/8 stainless steel components with smooth socket-head, hex-drive screws. Fits all XJ550 model carbs.
    $ 39.95

    HCP21622 Aftermarket BS32 series MIKUNI CARB FASTENERS KIT, featuring bright 18/8 stainless steel components with smooth socket-head, hex-drive screws. Fits all 1984-85 FJ600 model carbs.
    $ 39.95

    HCP21627 Aftermarket BS30 series MIKUNI CARB FASTENERS KIT, featuring bright 18/8 stainless steel components with smooth socket-head, hex-drive screws. Fits all XJ650 Turbo model carbs.
    $ 42.95

    HCP21632 Aftermarket BS33 series MIKUNI CARB FASTENERS KIT, featuring bright 18/8 stainless steel components with smooth socket-head screws. Fits all XJ700-X and XJ750-X model carbs.
    $ 39.95

    HCP21637 Aftermarket BS35/36 series MIKUNI CARB FASTENERS KIT, featuring bright 18/8 stainless steel components with smooth socket-head, hex-drive screws. Fits all XJ900 model carbs.
    $ 39.95

    HCP21642 Aftermarket BS34 series MIKUNI CARB FASTENERS KIT, featuring bright 18/8 stainless steel components with smooth socket-head, hex-drive screws. Fits all XJ11100 model carbs.
    $ 52.95



    HCP21618 Aftermarket BS28 series MIKUNI CARB FASTENERS KIT, featuring black alloy steel components with knurled socket-head, hex-drive screws. Fits all XJ550 model carbs.
    $ 34.95

    HCP21623 Aftermarket BS32 series MIKUNI CARB FASTENERS KIT, featuring black alloy steel components with knurled socket-head, hex-drive screws. Fits all 1984-85 FJ600 model carbs.
    $ 34.95

    HCP21628 Aftermarket BS30 series MIKUNI CARB FASTENERS KIT, featuring black alloy steel components with knurled socket-head, hex-drive screws. Fits all XJ650 Turbo model carbs.
    $ 39.95

    HCP21633 Aftermarket BS33 series MIKUNI CARB FASTENERS KIT, featuring black alloy steel components with knurled socket-head, hex-drive screws. Fits all XJ700-X and XJ750-X model carbs.
    $ 36.95

    HCP21638 Aftermarket BS35/36 series MIKUNI CARB FASTENERS KIT, featuring black alloy steel components with knurled socket-head, hex-drive screws. Fits all XJ900 model carbs.
    $ 34.95

    HCP21643 Aftermarket BS34 series MIKUNI CARB FASTENERS KIT, featuring black alloy steel components with knurled socket-head, hex-drive screws. Fits all XJ11100 model carbs.
    $ 42.95




    Mikuni Carb Brackets Kits:

    Kick it up a notch (or two)……..heck, kick it up to an 11 with these carb bracket kits which contain beautifully re-plated original major and minor brackets, hose clips, and more. Kits vary from model to model in their contents. NOTE: most of the pieces in these kits are re-plated, used parts, and as such, may have minor cosmetic flaws (tooling marks, fastener marks, etc.). Most such marks will not be visible once installed. Also, all re-plated items require a refundable core charge which will be credited back to you upon the return of all of the same-model, same-type kit contents. Since these are re-plated used parts, we do require an exchange for your original parts so we can have a steady supply of parts to be processed and re-plated for future sales.

    HCP23825 Aftermarket BS28 series MIKUNI CARB BRACKETS KIT features a complete set of new or re-plated original brackets listed below. Fits all 1981-84 XJ550 models carbs. NOTE: requires a $ 125.00 core charge, refundable upon the return of all undamaged, same-model, same-type kit contents.
    $ 179.95 + $ 125.00 refundable core charge

    1 x HCP5480 re-plated upper rack bracket
    1 x HCP5481 re-plated lower rack bracket
    1 x HCP5487 re-plated lower rack idle speed guide bracket
    1 x HCP5156 re-plated choke shaft
    1 x HCP5157 re-plated choke shaft spring
    4 x HCP5163 re-plated choke plunger lifter brackets
    1 x HCP5181 re-plated choke cable bracket (on the #1 hat, front position)
    1 x HCP5489 re-plated choke cable bracket clamp
    1 x HCP4561 re-plated or oem choke cable bracket clamp screw
    1 x HCP5490 re-plated throttle cable bracket (on the #2 hat, inner position)
    1 x HCP5161 re-plated idle speed bolt
    1 x HCP5162 re-plated idle speed bolt spring
    1 x HCP9848 aftermarket idle speed screw grommet
    3 x HCP5159 re-plated synch screws
    3 x HCP5155 re-plated synch screw springs
    3 x HCP5160 re-plated synch screw “plunger” springs

    NOTE: the above kit does not include the HCP5488 lower HEAT SHIELD and it should be ordered separate if desired:

    HCP5488RP OEM re-plated carb lower rack bracket BOWL HEAT SHIELD, this large curved should covers the entire length and width of the carb rack and is fastened to the lower rack bracket. Beautiful silver-zinc plating brings the bottom side of these carbs to life. Fits all BS28-series carbs as used on XJ550 Maxim, Seca, and XJ550 Euro models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type shield.
    $ 49.95 + $ 25.00 refundable core charge




    HCP23826 Aftermarket BS30 series MIKUNI CARB BRACKETS KIT features a complete set of new or re-plated original brackets listed below. Fits all 1982-83 XJ650 Turbo carbs. NOTE: requires a $ 125.00 core charge, refundable upon the return of all undamaged, same-model, same-type kit contents.
    $ 189.95 + $ 125.00 refundable core charge

    1 x HCP14255 re-plated upper rack bracket
    1 x HCP14256 re-plated lower rack bracket
    1 x HCP14257 re-plated lower rack idle speed guide bracket
    1 xHCP14203 re-plated choke shaft
    2 x HCP14200 re-plated choke plunger lifter brackets (for carbs #1/2)
    1 x HCP14201 re-plated choke plunger lifter bracket (for carb #3)
    1 x HCP14202 re-plated choke plunger lifter bracket (for carb #4)
    1 x HCP17729 re-plated choke cable bracket (on the #3 hat, outer position)
    1 x HCP17725 re-plated choke cable bracket clamp
    1 x HCP17726 re-plated choke cable bracket clamp screw
    1 x HCP10433 re-plated throttle cable bracket (on the #3 hat, inner position)
    1 x HCP7411 re-plated pressure regulator bracket on the #3 hat, inner position)
    1 x HCP5161 re-plated idle speed bolt
    1 x HCP5162 re-plated idle speed bolt spring
    1 x HCP9848 aftermarket idle speed screw grommet
    3 x HCP5159 re-plated synch screws
    3 x HCP5155 re-plated synch screw springs
    3 x HCP5160 re-plated synch screw “plunger” springs
    1 x HCP21530 aftermarket pressure sensor vaccum hose clip (on the #1 hat, rear inner position)
    1 x HCP17727 re-plated oem or HCP21527 aftermarket clutch cable upper rack bracket clip (on the #3 carb outer screw position)




    HCP23827 Aftermarket BS33 series MIKUNI CARB BRACKETS KIT features a complete set of new or re-plated original brackets listed below. Fits all 1985-86 XJ700--X and XJ750-X carbs. NOTE: requires a $ 125.00 core charge, refundable upon the return of all undamaged, same-model, same-type kit contents.
    $ 179.95 + $ 125.00 refundable core charge

    1 x HCP16337 re-plated upper rack bracket
    2 x HCP14413 re-plated upper rack bracket extensions
    1 x HCP16639 re-plated lower rack bracket
    1 x HCP14257 re-plated lower rack idle speed guide bracket
    2 x HCP17741 re-plated lower rack bracket extensions
    1 x HCP17755 re-plated choke shaft
    2 x HCP14200 re-plated choke plunger lifter finger brackets (for carbs #1/2)
    1 x HCP16791 re-plated choke plunger lifter finger bracket (for carb #3)
    1 x HCP14202 re-plated choke plunger lifter finger bracket (for carb #4)
    1 x HCP17733 re-plated choke cable bracket (on the #3 hat, outer position)
    1 x HCP17737 re-plated choke cable bracket clamp
    1 x HCP17726 re-plated choke cable bracket clamp screw
    1 x HCP17731 re-plated throttle cable bracket (on the #3 hat, inner positions)
    1 x HCP5161 re-plated idle speed bolt
    1 x HCP5162 re-plated idle speed bolt spring
    1 x HCP9848 aftermarket idle speed screw grommet
    3 x HCP5159 re-plated synch screws
    3 x HCP5155 re-plated synch screw springs
    3 x HCP5160 re-plated synch screw “plunger” springs
    1 x HCP17728 re-plated oem or HCP21524 aftermarket clutch cable upper rack bracket clip (on the #3 carb outer screw position)




    HCP23828 Aftermarket BS35 and BS36 series MIKUNI CARB BRACKETS KIT features a complete set of new or re-plated original brackets listed below. Fits all 1983-89 XJ900RK, RL, F, N, and FN model carbs. NOTE: requires a $ 125.00 core charge, refundable upon the return of all undamaged, same-model, same-type kit contents.
    $ 199.95 + $ 125.00 refundable core charge

    1 x HCP16338 re-plated upper rack bracket
    1 x HCP16340 re-plated lower rack bracket
    1 x HCP14257 re-plated lower rack idle speed guide bracket
    1 x HCP17756 re-plated choke shaft
    4 x HCP16792 re-plated choke plunger lifter brackets
    1 x HCP16794 re-plated choke plunger lifter brackets (on the #4 carb at the outer end of shaft)
    1 x HCP17734 re-plated choke cable bracket (#4 hat inner)
    1 x HCP17725 re-plated choke cable bracket clamp
    1 x HCP17726 re-plated choke cable bracket clamp screw
    1 x HCP17732 re-plated throttle cable bracket (on the #3 hat, inner positions)
    1 x HCP5161 re-plated idle speed bolt
    1 x HCP5162 re-plated idle speed bolt spring
    1 x HCP9848 aftermarket idle speed screw grommet
    3 x HCP5159 re-plated synch screws
    3 x HCP5155 re-plated synch screw springs
    3 x HCP5160 re-plated synch screw “plunger” springs
    1 x HCP18302 re-plated oem or HCP23813 aftermarket vacuum hose clip (on the #2 carb, rear inner position)
    1 x HCP17735 re-plated oem or HCP21528 aftermarket clutch cable upper rack bracket clip on the #3 carb outer screw position)




    HCP23829 Aftermarket BS34 series MIKUNI CARB BRACKETS KIT features a complete set of new or re-plated original brackets listed below. Fits all 1982-84 XJ1100 carbs. NOTE: requires a $ 125.00 core charge, refundable upon the return of all undamaged, same-model, same-type kit contents.
    $ 199.95 + $ 125.00 refundable core charge

    1 x HCP16338 re-plated upper rack bracket
    1 x HCP16341 re-plated lower rack bracket
    1 x HCP18260 re-plated lower rack idle speed guide bracket
    1 x HCP17756 re-plated choke shaft
    4 x HCP16792 re-plated choke plunger lifter brackets
    1 x HCP16794 re-plated choke plunger lifter brackets (on the #4 carb at the outer end of shaft)
    1 x HCP17734 re-plated choke cable bracket (on the #4 hat, inner position)
    1 x HCP17725 re-plated choke cable bracket clamp
    1 x HCP17726 re-plated choke cable bracket clamp screw
    1 x HCP17732 re-plated throttle cable bracket (on the #3 hat, inner position)
    1 x HCP9808 re-plated idle speed bolt
    1 x HCP9812 re-plated idle speed bolt spring
    3 x HCP18380 re-plated synch screws
    3 x HCP5155 re-plated synch screw springs
    3 x HCP18382 re-plated synch screw plungers
    3 x HCP23846 aftermarket plunger circlips
    3 x HCP18383 re-plated synch screw plunger springs
    1 x HCP18395 re-plated oem or HCP21529 aftermarket clutch cable hat clip (on the #4 hat, front outer position)
    1 x HCP18345 re-plated fuel valve curved bracket (on the #1 hat, inner position)
    1 x HCP5416 re-plated fuel valve L-bracket (attaches to hcp18345 bracket above)




    INDIVIDUAL MIKUNI CARB HARDWARE COMPONENTS:

    MIKUNI CARB HAT HARDWARE:

    Mikuni Carb Hat Brackets:

    Our re-plated Mikuni carb diaphram cover (chrome "dome" or "Hat") individual BRACKETS allow you to re-create the original look and beauty of these carb racks. These parts are available re-plated to their correct original silver- or yellow-zinc appearance. If you need to replace any missing hardware, or just want to create a show-winning look, then you should start your shopping list here! NOTE: all synch hardware pieces are re-plated, used parts, and as such, may have minor cosmetic flaws (tooling marks, fastener marks, etc.). Most such marks will not be visible once installed. Also, all re-plated items require a refundable core charge which will be credited back to you once you return a same-model, same-type of item(s) as you purchased. Since these are re-plated used parts, we do require an exchange for your original parts so we can have a steady supply of parts to be processed and re-plated for future sales.


    HCP5181RP OEM re-plated carb hat CHOKE CABLE BRACKET, mounted on the #1 hat front position. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all BS28-series carbs as used on all XJ550 models. Does not include the HCP5489RP clamp or the HCP4561RP clamp screw listed below. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 39.95 + $ 25.00 refundable core charge

    HCP17729RP OEM re-plated carb hat CHOKE CABLE BRACKET, mounted on the #3 hat outer position. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all BS30-series carbs as used on all XJ650 Turbo models. Does not include the HCP17725RP clamp or the HCP17726RP clamp screw listed below. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 39.95 + $ 25.00 refundable core charge

    HCP17733RP OEM re-plated carb hat CHOKE CABLE BRACKET, mounted on the #3 hat outer position. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all BS33-series carbs as used on all water-cooled XJ700-X and XJ750-X models. Does not include the HCP17737RP clamp or the HCP17726RP clamp screw listed below. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 39.95 + $ 25.00 refundable core charge

    HCP17734RP OEM re-plated carb hat CHOKE CABLE BRACKET, mounted on the #4 hat inner position. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all BS35- and BS36-series carbs as used on XJ900 models and on XJ1100 (BS34 carbs) models. Does not include the HCP17725RP clamp or the HCP17726RP clamp screw listed below. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 39.95 + $ 25.00 refundable core charge



    HCP5489RP OEM re-plated carb hat choke cable bracket CLAMP, mounts to the HCP5181RP choke cable bracket listed above. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all BS28-series carbs as used on all XJ550 models. . Does not include the HCP4561 clamp screw listed below. NOTE: requires a $ 15.00 core charge, refundable upon the return of an undamaged, same-model, same-type clamp.
    $ 17.95 + $ 15.00 refundable core charge

    HCP17725RP OEM re-plated carb hat choke cable bracket CLAMP, mounts to the HCP17729RP choke cable bracket listed above. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all XJ650 Turbo, all XJ900 (BS35 and BS36 series carbs), and all XJ1100 (BS34 carbs) models. Does not include the HCP4561 clamp screw listed below. NOTE: requires a $ 15.00 core charge, refundable upon the return of an undamaged, same-model, same-type clamp.
    $ 17.95 + $ 15.00 refundable core charge

    HCP17737RP OEM re-plated carb hat choke cable bracket CLAMP, mounts to the HCP17729RP choke cable bracket listed above. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all BS33-series carbs as used on all water-cooled XJ700-X and XJ750-X models. Does not include the HCP17726RP clamp screw listed below. NOTE: requires a $ 15.00 core charge, refundable upon the return of an undamaged, same-model, same-type clamp.
    $ 19.95 + $ 15.00 refundable core charge



    HCP4561RP OEM re-plated carb hat choke cable bracket CLAMP SCREW, mounts the choke cable clamp to the choke cable bracket on all XJ550 models. Beautiful yellow-zinc plating brings the top side of these carbs to life. NOTE: requires a $ 10.00 core charge, refundable upon the return of an undamaged, same-model, same-type screw.
    $ 11.95 + $ 10.00 refundable core charge

    HCP17726RP OEM re-plated carb hat choke cable bracket CLAMP SCREW, mounts the choke cable clamp to the choke cable bracket on all XJ650 Turbo, all water-cooled XJ700-X and XJ750-X models, all XJ900 (BS35 and BS36 series carbs), and all XJ1100 (BS34 carbs) models. Beautiful yellow-zinc plating brings the top side of these carbs to life. NOTE: requires a $ 10.00 core charge, refundable upon the return of an undamaged, same-model, same-type screw.
    $ 11.95 + $ 10.00 refundable core charge




    HCP5490RP OEM re-plated carb hat THROTTLE CABLE BRACKET, mounted on the #2 hat inner position. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all BS28-series carbs as used on all XJ550 models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 29.95 + $ 25.00 refundable core charge


    HCP10433RP OEM re-plated carb hat THROTTLE CABLE BRACKET, mounted on the #3 hat inner position. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all BS30-series carbs as used on all XJ650 Turbo models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 29.95 + $ 25.00 refundable core charge

    HCP7411RP OEM re-plated carb hat FUEL PRESSURE REGULATOR BRACKET, mounts to the HCP10433RP throttle cable bracket listed above. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all BS30-series carbs as used on all XJ650 Turbo models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 39.95 + $ 25.00 refundable core charge


    HCP17731RP OEM re-plated carb hat THROTTLE CABLE BRACKET, mounted on the #3 hat inner position. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all BS33-series carbs as used on all water-cooled XJ700-X and XJ750-X models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 29.95 + $ 25.00 refundable core charge

    HCP17732RP OEM re-plated carb hat THROTTLE CABLE BRACKET, mounted on the #3 hat inner position. Beautiful yellow-zinc plating brings the top side of these carbs to life. Fits all XJ900 models using the BS35- or BS36-series carbs and all XJ1100 models using the BS34-series carbs. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 39.95 + $ 25.00 refundable core charge




    Mikuni Carb Hat Clips:

    HCP14205 OEM carb body-pressure sensor VACUUM HOSE ROUTING CLIP, use one on the #1 carb hat, rear inner position, on all XJ650 Turbo models. This “shepherd’s crook” bright plated clips route the vacuum hose (in the “crook” part of the clip) away from obstacles, and lays flat (not upright) and captures the pressure sensor vacuum hose (which comes off the front brass fitting of the #2 carb) and routes it properly on its path. Perfectly replaces a commonly missing or rusted original. Use 1 per carb. Each.
    $ discontinued

    HCP21530 Aftermarket carb body-pressure sensor VACUUM HOSE ROUTING CLIP, use one on the #1 carb hat, rear inner position, on all XJ650 Turbo models. This “shepherd’s crook” bright plated clips route the vacuum hose (in the “crook” part of the clip) away from obstacles, and lays flat (not upright) and captures the pressure sensor vacuum hose (which comes off the front brass fitting of the #2 carb) and routes it properly on its path. Perfectly replaces a commonly missing or rusted original. Use 1 per carb. Each:
    $ 9.95

    HCP21529 Aftermarket Mikuni carb hat CLUTCH CABLE ROUTING CLIP, mounts on the #3 carb hat in the outer position, on all XJ1100 models. Heavy wire "shepherd's crook" shaped clip is secured by the carb screw, and captures and properly routes the clutch cable on its way to the clutch cover area. Perfectly replaces a commonly missing or rusted original. Use 1 per carb.
    $ 9.95



    Mikuni Carb Hat Fasteners:

    ch3) OEM and aftermarket Mikuni carb hat-to-body (the “chrome “hat” technically known as a diaphram cover) MOUNTING SCREW. available in a variety of styles and finishes. All Mikuni model carbs originally used a panhead, phillips-drive hat mounting screw with a zinc-plated finish, and did not use a lockwasher. Use 4 per carb, 16 per rack. NOTE: XJ650 Turbo models also used one additional unit of this screw to secure the check valve to its mounting bracket. Also see our complete CARB HARDWARE KITS listed further below for the best deal and ease of ordering!


    for all XJ550, 1984-85 FJ600, 1986-88 FZ600, 1986-90 YX600 Radian, XJ650 Turbo, XJ700-X, XJ750-X, all XJ900RK, RL, N/FN, and F models, XJ1100, and all XS1100 models :

    - These replacement panhead, phillips-drive screws have a natural finish and are made from alloy steel.

    HCP60 OEM Mikuni carb hat MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive, each:
    $ 2.95

    HCP60SET4 OEM Mikuni carb hat MOUNTING SCREW, set of 4:
    $ 11.50

    HCP60SET16 OEM Mikuni carb hat MOUNTING SCREW, set of 16:
    $ 39.95



    HCP910 Aftermarket Mikuni carb hat MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive, each:
    $ 1.50

    HCP910SET4 Aftermarket Mikuni carb hat MOUNTING SCREW, set of 4:
    $ 5.75

    HCP910SET16 Aftermarket Mikuni carb hat MOUNTING SCREW, set of 16:
    $ 17.95



    - These replacement panhead, phillips-drive screws have a polished head and are made from an 18-8 stainless steel.

    HCP62 Aftermarket Mikuni carb hat MOUNTING SCREW, 18-8 stainless-steel, panhead, phillips-drive, each:
    $ 1.50

    HCP62SET4 Aftermarket Mikuni carb hat MOUNTING SCREW, set of 4:
    $ 4.50

    HCP62SET16 Aftermarket Mikuni carb hat MOUNTING SCREW, set of 16:
    $ 14.95



    - These replacement panhead, phillips-drive screws have a black oxide-coated finish and are made from 18-8 stainless steel.

    HCP2749 Aftermarket Mikuni carb hat MOUNTING SCREW, black-oxide coated stainless steel, panhead phillips-drive, each:
    $ 1.50

    HCP2749SET4 Aftermarket Mikuni carb hat MOUNTING SCREW, set of 4:
    $ 5.50

    HCP2749SET16 Aftermarket Mikuni carb hat MOUNTING SCREW, set of 16:
    $ 18.00



    - These replacement button-head, hex-drive screws have a polished head and are made from an 18-8 stainless steel.

    HCP308 Aftermarket Mikuni carb hat MOUNTING SCREW, 18-8 stainless-steel, polished button head, hex-drive, each:
    $ 1.25

    HCP308SET4 Aftermarket Mikuni carb hat MOUNTING SCREW, set of 4:
    $ 4.50

    HCP308SET16 Aftermarket Mikuni carb hat MOUNTING SCREW, set of 16:
    $ 14.00



    - These replacement socket-head, hex-drive screws have a smooth polished head and are made from an 18-8 stainless steel.

    HCP310 Aftermarket Mikuni carb hat MOUNTING SCREW, 18-8 stainless steel, smooth polished socket head, hex-drive, each:
    $ 1.50

    HCP310SET4 Aftermarket Mikuni carb hat MOUNTING SCREW, set of 4:
    $ 5.25

    HCP310SET16 Aftermarket Mikuni carb hat MOUNTING SCREW, set of 16:
    $ 12.95



    - These replacement socket-head, hex-drive screws have a black ribbed head and are made from an alloy steel.

    HCP64 Aftermarket Mikuni carb hat MOUNTING SCREW, black oxide-coated steel, ribbed socket head, hex-drive, each:
    $ 1.00

    HCP64SET4 Aftermarket Mikuni carb hat MOUNTING SCREW, set of 4:
    $ 3.50

    HCP64SET16 Aftermarket Mikuni carb hat MOUNTING SCREW, set of 16:
    $ 10.95




    for all 1992-98 XJ600 Seca II models:

    - These replacement panhead, phillips-drive screws have a natural finish and are made from alloy steel.

    HCP322 OEM Mikuni carb hat short MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive. Use 4 per hat, or 12 per entire rack, in all positions except the four center positions that hold the throttle cable bracket to the #2 and #3 carb hats. Each:
    $ 2.95

    HCP322SET4 OEM Mikuni carb hat short MOUNTING SCREWS, set of 4:
    $ 9.75

    HCP322SET12 OEM Mikuni carb hat short MOUNTING SCREWS, set of 12:
    $ 24.95



    HCP918 Aftermarket Mikuni carb hat short MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive. Use 4 per hat, or 12 per entire rack, in all positions except the four center positions that hold the throttle cable bracket to the #2 and #3 carb hats. Each:
    $ 1.00

    HCP918SET4 Aftermarket Mikuni carb hat short MOUNTING SCREWS, set of 4:
    $ 3.75

    HCP918SET12 Aftermarket Mikuni carb hat short MOUNTING SCREWS, set of 12:
    $ 6.95



    HCP25913 Aftermarket Mikuni carb hat short MOUNTING SCREW, bright zinc-plated alloy steel, panhead, phillips drive, JIS small-head design as original. Use 4 per hat, or 12 per entire rack, in all positions except the four center positions that hold the throttle cable bracket to the #2 and #3 carb hats. Each:
    $ 2.95

    HCP25913SET4 Aftermarket Mikuni carb hat short MOUNTING SCREWS, set of 4:
    $ 9.75

    HCP25913SET12 Aftermarket Mikuni carb hat short MOUNTING SCREWS, set of 12:
    $ 24.95




    HCP3696 OEM Mikuni carb hat long MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive. Use 4 per rack, in the positions that secure the throttle cable bracket on carbs #2 and #3. Each:
    $ 2.50

    HCP3696SET4 OEM Mikuni carb hat long MOUNTING SCREWS, set of 4:
    $ 9.50



    HCP5482 Aftermarket Mikuni carb hat long MOUNTING SCREW, zinc-plated alloy steel, panhead, phillips-drive. Use 4 per rack, in the positions that secure the throttle cable bracket on carbs #2 and #3. Each:
    $ 1.00

    HCP5482SET4 Aftermarket Mikuni carb hat long MOUNTING SCREWS, set of 4:
    $ 3.50




    - These replacement panhead, phillips-drive screws have a polished head and are made from an 18-8 stainless steel.

    HCP1355 Aftermarket Mikuni carb hat short MOUNTING SCREW, 18-8 stainless-steel, panhead, phillips-drive. Use 4 per hat, or 12 per entire rack, in all positions except the four center positions that hold the throttle cable bracket to the #2 and #3 carb hats. Each:
    $ 1.25

    HCP1355SET4 Aftermarket Mikuni carb hat short MOUNTING SCREWS, set of 4:
    $ 4.95

    HCP1355SET12 Aftermarket Mikuni carb hat short MOUNTING SCREWS, set of 12:
    $ 12.95



    HCP21356 Aftermarket Mikuni carb hat long MOUNTING SCREW, 18-8 stainless steel, panhead, phillips-drive.. Use 4 per rack, in the positions that secure the throttle cable bracket on carbs #2 and #3. Each:
    $ 1.50

    HCP21356SET4 Aftermarket Mikuni carb hat long MOUNTING SCREWS, set of 4:
    $ 4.95



    - These replacement button-head, hex-drive screws have a polished head and are made from an 18-8 stainless steel.

    HCP332 Aftermarket Mikuni carb hat short MOUNTING SCREW, 18-8 stainless-steel, polished button head, hex-drive. Use 4 per hat, or 12 per entire rack, in all positions except the four center positions that hold the throttle cable bracket to the #2 and #3 carb hats. Each:
    $ 1.50

    HCP332SET4 Aftermarket Mikuni carb hat short MOUNTING SCREWS, set of 4:
    $ 5.25

    HCP332SET12 Aftermarket Mikuni carb hat short MOUNTING SCREWS, set of 12:
    $ 10.95



    HCP5485 Aftermarket Mikuni carb hat long MOUNTING SCREW, 18-8 stainless-steel, polished button head, hex-drive. Use 4 per rack, in the positions that secure the throttle cable bracket on carbs #2 and #3. Each:
    $ 1.50

    HCP5485SET4 Aftermarket Mikuni carb hat long MOUNTING SCREWS, set of 4:
    $ 4.95




    - These replacement socket-head, hex-drive screws have a smooth polished head and are made from an 18-8 stainless steel.

    HCP329 Aftermarket Mikuni carb hat short MOUNTING SCREW, 18-8 stainless steel, smooth polished socket head, hex-drive. Use 4 per hat, or 12 per entire rack, in all positions except the four center positions that hold the throttle cable bracket to the #2 and #3 carb hats. Each:
    $ 1.25

    HCP329SET4 Aftermarket Mikuni carb hat short MOUNTING SCREWS, set of 16:
    $ 4.75

    HCP329SET12 Aftermarket Mikuni carb hat short MOUNTING SCREWS, set of 12:
    $ 10.75



    HCP5483 Aftermarket Mikuni carb hat long MOUNTING SCREW, 18-8 stainless steel, smooth polished socket head, hex-drive. Use 4 per rack, in the positions that secure the throttle cable bracket on carbs #2 and #3. Each:
    $ 1.50

    HCP5483SET4 Aftermarket Mikuni carb hat long MOUNTING SCREWS, set of 4:
    $ 5.25




    - These replacement socket-head, hex-drive screws have a ribbed head with a black oxide-coated finish and are made from alloy steel.

    HCP339 Aftermarket Mikuni carb hat short MOUNTING SCREW, black oxide-coated steel, ribbed socket head, hex-drive. Use 4 per hat, or 12 per entire rack, in all positions except the four center positions that hold the throttle cable bracket to the #2 and #3 carb hats. Each:
    $ 1.20

    HCP339SET4 Aftermarket Mikuni carb hat short MOUNTING SCREWS , set of 4:
    $ 4.50

    HCP339SET12 Aftermarket Mikuni carb hat short MOUNTING SCREWS , set of 12:
    $ 10.50



    HCP5484 Aftermarket Mikuni carb hat long MOUNTING SCREW, black oxide-coated steel, ribbed socket head, hex-drive. Use 4 per rack, in the positions that secure the throttle cable bracket on carbs #2 and #3. Each:
    $ 1.50

    HCP5484SET4 Aftermarket Mikuni carb hat long MOUNTING SCREWS, set of 4:
    $ 4.95




    HCP60 OEM Mikuni throttle cable bracket mounting SCREW, mounts in the center of the throttle cable bracket and retains the “z-clamp” to the aluminum bracket, use 1 per rack on all 1992-93 XJ600 Seca II models. A separate lockwasher (listed below) is also used with this screw. Panhead, phillips-drive, zinc-plated alloy steel.
    $ 2.95

    HCP22772 OEM Mikuni throttle cable bracket mounting SCREW, mounts in the center of the throttle cable bracket and retains the “z-clamp” to the aluminum bracket, use 1 per rack on all 1994 XJ600 Seca II models. A separate lockwasher (listed below) is also used with this screw. Panhead, phillips-drive, zinc-plated alloy steel.
    $ 3.95

    HCP9180 OEM Mikuni throttle cable bracket mounting SCREW, mounts in the center of the throttle cable bracket and retains the “z-clamp” to the aluminum bracket, use 1 per rack on all 1995-97 XJ600 Seca II models. A separate lockwasher (listed below) is also used with this screw. Panhead, phillips-drive, phosphate-plated alloy steel.
    $ 1.95

    HCP22771 OEM Mikuni throttle cable bracket mounting SCREW, mounts in the center of the throttle cable bracket and retains the “z-clamp” to the aluminum bracket, use 1 per rack on all 1998 XJ600 Seca II models. A separate lockwasher (listed below) is also used with this screw. Panhead, phillips-drive, zinc-plated alloy steel.
    $ 1.95


    HCP21368 Aftermarket Mikuni throttle cable bracket mounting SCREW, mounts in the center of the throttle cable bracket and retains the “z-clamp” to the aluminum bracket, use 1 per rack on all 1992-98 XJ600 Seca II models. A separate lockwasher (listed below) is also used with this screw. Panhead, phillips-drive, zinc-plated alloy steel.
    $ 1.00

    HCP5889 Aftermarket Mikuni throttle cable bracket mounting SCREW, mounts in the center of the throttle cable bracket and retains the “z-clamp” to the aluminum bracket, use 1 per rack on all 1992-98 XJ600 Seca II models. A separate lockwasher (listed below) is also used with this screw. Panhead, phillips-drive, bright 18-8 stainless steel.
    $ 1.25

    HCP21369 Aftermarket Mikuni throttle cable bracket mounting SCREW, mounts in the center of the throttle cable bracket and retains the “z-clamp” to the aluminum bracket, use 1 per rack on all 1992-98 XJ600 Seca II models. A separate lockwasher (listed below) is also used with this screw. Panhead, phillips-drive, bacl-oxide coated 18-8 stainless steel.
    $ 1.95

    HCP21372 Aftermarket Mikuni throttle cable bracket mounting SCREW, mounts in the center of the throttle cable bracket and retains the “z-clamp” to the aluminum bracket, use 1 per rack on all 1992-98 XJ600 Seca II models. A separate lockwasher (listed below) is also used with this screw. Polished 18-8 stainless steel, button head, hex-drive style.
    $ 1.25

    HCP21370 Aftermarket Mikuni throttle cable bracket mounting SCREW, mounts in the center of the throttle cable bracket and retains the “z-clamp” to the aluminum bracket, use 1 per rack on all 1992-98 XJ600 Seca II models. A separate lockwasher (listed below) is also used with this screw. Bright 18-8 stainless steel, socket head, hex-drive style.
    $ 1.00

    HCP21371 Aftermarket Mikuni throttle cable bracket mounting SCREW, mounts in the center of the throttle cable bracket and retains the “z-clamp” to the aluminum bracket, use 1 per rack on all 1992-98 XJ600 Seca II models. A separate lockwasher (listed below) is also used with this screw. Black-oxide coated 18-8 stainless steel, socket head, hex-drive style.
    $ 1.00



    HCP55 OEM Mikuni carb throttle cable clamp bracket screw LOCK WASHER, zinc-plated alloy steel. For use on all 1992-98 XJ600 Seca II models only, use 1 per screw, each:
    $ 1.95

    HCP913 Aftermarket Mikuni carb throttle cable clamp bracket screw LOCK WASHER, zinc-plated alloy steel. For use on all 1992-98 XJ600 Seca II models only, use 1 per screw, each:
    $ 1.00

    HCP57 Aftermarket Mikuni carb throttle cable clamp bracket screw LOCK WASHER, 18-8 stainless steel. For use on all 1992-98 XJ600 Seca II models only, use 1 per screw, each:
    $ 1.00

    HCP59 Aftermarket Mikuni carb throttle cable clamp bracket screw LOCK WASHER, black-oxide coated alloy steel. For use on all 1992-98 XJ600 Seca II models only, use 1 per screw, each.
    $ 1.00



    XJ650 Turbo Additional Hat Hardware:

    HCP1467 OEM fuel pressure regulator and check valve mounting bracket-to-carb hat bracket SCREW. On the inner side of the #3 carb hat, XJ650 Turbo models use a special bracket to hold both the fuel pressure regulator and the check valve. This screw attaches that pressure regulator/check valve bracket to the accelerator cable bracket. Use 2 per carb; order the HCP315 lockwashers separately. Each:
    $ 3.50

    HCP2746 Aftermarket fuel pressure regulator and check valve mounting bracket-to-carb hat bracket SCREW, zinc-plated alloy steel, panhead, phillips-drive. On the inner side of the #3 carb hat, XJ650 Turbo models use a special bracket to hold both the fuel pressure regulator and the check valve. This screw attaches that pressure regulator/check valve bracket to the accelerator cable bracket. Use 2 per carb; order the HCP916 lockwashers separately. Each:
    $ 2.95

    HCP2747 Aftermarket fuel pressure regulator and check valve mounting bracket-to-carb hat bracket SCREW, 18-8 stainless steel, panhead, phillips-drive. On the inner side of the #3 carb hat, XJ650 Turbo models use a special bracket to hold both the fuel pressure regulator and the check valve. This screw attaches that pressure regulator/check valve bracket to the accelerator cable bracket. Use 2 per carb; order the HCP319 lockwashers separately. Each.
    $ 3.95

    HCP21431 Aftermarket fuel pressure regulator and check valve mounting bracket-to-carb hat bracket SCREW, 18-8 stainless steel, polished finish, button head, hex-drive. On the inner side of the #3 carb hat, XJ650 Turbo models use a special bracket to hold both the fuel pressure regulator and the check valve. This screw attaches that pressure regulator/check valve bracket to the accelerator cable bracket. Use 2 per carb; order the HCP319 lockwashers separately. Each.
    $ 1.95

    HCP21430 Aftermarket fuel pressure regulator and check valve mounting bracket-to-carb hat bracket SCREW, 18-8 stainless steel, socket head, smooth polished head, hex-drive. On the inner side of the #3 carb hat, XJ650 Turbo models use a special bracket to hold both the fuel pressure regulator and the check valve. This screw attaches that pressure regulator/check valve bracket to the accelerator cable bracket. Use 2 per carb; order the HCP319 lockwashers separately. Each.
    $ 1.95

    HCP21432 Aftermarket fuel pressure regulator and check valve mounting bracket-to-carb hat bracket SCREW, black-oxide coated alloy steel, socket head, hex-drive. On the inner side of the #3 carb hat, XJ650 Turbo models use a special bracket to hold both the fuel pressure regulator and the check valve. This screw attaches that pressure regulator/check valve bracket to the accelerator cable bracket. Use 2 per carb; order the HCP321 lockwashers separately. Each.
    $ 1.50



    HCP315 OEM fuel pressure regulator and check valve mounting bracket-to-carb hat bracket LOCK WASHER, use with any of the screws listed above on all XJ650 Turbo models, each:
    $ 2.95

    HCP916 Aftermarket zinc-plated alloy steel with a natural finish, fuel pressure regulator and check valve mounting bracket-to-carb hat bracket LOCK WASHER, use with any of the screws listed above on all XJ650 Turbo models, each:
    $ 1.25

    HCP319 Aftermarket 18-8 stainless steel fuel pressure regulator and check valve mounting bracket-to-carb hat bracket LOCK WASHER, use with any of the screws listed above on all XJ650 Turbo models, each:
    $ 1.50

    HCP321 Aftermarket black oxide-coated alloy steel fuel pressure regulator and check valve mounting bracket-to-carb hat bracket LOCK WASHER, use with any of the screws listed above on all XJ650 Turbo models, each:
    $ 1.75



    HCP5386 OEM fuel pressure regulator and check valve mounting bracket NUT. On the inner side of the #3 carb hat, XJ650 Turbo models use a special bracket to hold both the fuel pressure regulator and the check valve. This nut secures the pressure regulator to its bracket (which in turn is screwed into to the accelerator cable bracket). Use 1 per carb; order the HCP10422 plate washer separately. Each:
    $ 3.95

    HCP21407 Aftermarket fuel pressure regulator and check valve mounting bracket NUT, zinc-plated alloy steel. On the inner side of the #3 carb hat, XJ650 Turbo models use a special bracket to hold both the fuel pressure regulator and the check valve. This nut secures the pressure regulator to its bracket (which in turn is screwed into to the accelerator cable bracket). Use 1 per carb; order the HCP21409 plate washer separately. Each:
    $ 1.95

    HCP21408 Aftermarket fuel pressure regulator and check valve mounting bracket NUT, 18-8 stainless steel. On the inner side of the #3 carb hat, XJ650 Turbo models use a special bracket to hold both the fuel pressure regulator and the check valve. This nut secures the pressure regulator to its bracket (which in turn is screwed into to the accelerator cable bracket). Use 1 per carb; order the HCP21409 plate washer separately. Each:
    $ 2.95


    HCP10422 OEM fuel pressure regulator and check valve mounting bracket FLAT WASHER. On the inner side of the #3 carb hat, XJ650 Turbo models use a special bracket to hold both the fuel pressure regulator and the check valve. This washer is used with the HCP5386, HCP21407, or HCP21408 mounting nut. Use 1 per carb. Each:
    $ 4.50

    HCP21409 Aftermarket fuel pressure regulator and check valve mounting bracket FLAT WASHER, 18-8 stainless steel. On the inner side of the #3 carb hat, XJ650 Turbo models use a special bracket to hold both the fuel pressure regulator and the check valve. This washer is used with the HCP5386, HCP21407, or HCP21408 mounting nut. Use 1 per carb. Each:
    $ 2.95

    HCP21410 Aftermarket fuel pressure regulator and check valve mounting bracket FLAT WASHER, black-oxide coated alloy steel. On the inner side of the #3 carb hat, XJ650 Turbo models use a special bracket to hold both the fuel pressure regulator and the check valve. This washer is used with the HCP5386, HCP21407, or HCP21408 mounting nut. Use 1 per carb. Each:
    $ 2.95




    MIKUNI STARTER / ENRICHMENT / CHOKE CIRCUIT HARDWARE:

    Mikuni Carb Starter - Enrichment (“Choke”) Circuit Shaft, Brackets, and Springs:

    Our re-plated Mikuni carb starter - enrichment (“choke”) circuit individual SHAFTS AND BRACKETS allow you to re-create the original look and beauty of these carb racks. These parts are available re-plated to their correct original silver- or yellow-zinc appearance. If you need to replace any missing hardware, or just want to create a show-winning look, then you should start your shopping list here! NOTE: all starter hardware pieces are re-plated, used parts, and as such, may have minor cosmetic flaws (tooling marks, fastener marks, etc.). Most such marks will not be visible once installed. Also, all re-plated items require a refundable core charge which will be credited back to you once you return a same-model, same-type of item(s) as you purchased. Since these are re-plated used parts, we do require an exchange for your original parts so we can have a steady supply of parts to be processed and re-plated for future sales.


    HCP5156RP OEM re-plated carb starter - enrichment (“choke”) circuit ACTUATING SHAFT, long round shaft that carries the choke plunger lifter “finger” brackets. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all BS28-series carbs as used on all XJ550 Maxim, Seca, and XJ550 Euro models. NOTE: requires a $ 20.00 core charge, refundable upon the return of an undamaged, same-model, same-type shaft.
    $ 29.95 + $ 20.00 refundable core charge

    HCP14203RP OEM re-plated carb starter - enrichment (“choke”) circuit ACTUATING SHAFT, long round shaft that carries the choke plunger lifter “finger” brackets. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all BS30-series carbs as used on all XJ650 Turbo models. NOTE: requires a $ 20.00 core charge, refundable upon the return of an undamaged, same-model, same-type shaft.
    $ 39.95 + $ 20.00 refundable core charge

    HCP17755RP OEM re-plated carb starter - enrichment (“choke”) circuit ACTUATING SHAFT, long round shaft that carries the choke plunger lifter “finger” brackets. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all BS33-series carbs as used on all water-cooled XJ700-X and XJ750-X models. NOTE: requires a $ 20.00 core charge, refundable upon the return of an undamaged, same-model, same-type shaft.
    $ 39.95 + $ 20.00 refundable core charge

    HCP17756RP OEM re-plated carb starter - enrichment (“choke”) circuit ACTUATING SHAFT, long round shaft that carries the choke plunger lifter “finger” brackets. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all BS35- and BS36-series carbs as used on XJ900 models and BS34 carbs used on XJ1100 models. NOTE: requires a $ 20.00 core charge, refundable upon the return of an undamaged, same-model, same-type shaft.
    $ 39.95 + $ 20.00 refundable core charge



    HCP5163RP-SET4 OEM re-plated carb starter - enrichment (“choke”) circuit PLUNGER LIFTER BRACKETS, set of 4 of the choke plunger-lifter “finger” brackets. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all BS28-series carbs as used on all XJ550 Maxim, Seca, and XJ550 Euro models. NOTE: requires a $ 20.00 core charge, refundable upon the return of an undamaged, same-model, same-type set of lifter brackets.
    $ 29.95 + $ 20.00 refundable core charge


    HCP14200RP OEM re-plated carb starter - enrichment (“choke”) circuit PLUNGER LIFTER BRACKET, these are the choke plunger-lifter “finger” brackets used on the #1 and #2 carbs. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all BS30-series carbs as used on all XJ650 Turbo, and on BS33-series carbs used on all water-cooled XJ700-X and XJ750-X models. Each. NOTE: requires a $ 15.00 core charge, refundable upon the return of an undamaged, same-model, same-type set of lifter bracket.
    $ 15.95 + $ 15.00 refundable core charge

    HCP14201RP OEM re-plated carb starter - enrichment (“choke”) circuit PLUNGER LIFTER BRACKET, this is the choke plunger-lifter “finger” brackets used on the #3 carb. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all BS30-series carbs as used on all XJ650 Turbo models. NOTE: requires a $ 15.00 core charge, refundable upon the return of an undamaged, same-model, same-type set of lifter bracket.
    $ 19.95 + $ 15.00 refundable core charge

    HCP16791RP OEM re-plated carb starter - enrichment (“choke”) circuit PLUNGER LIFTER BRACKET, this is the choke plunger-lifter “finger” brackets used on the #3 carb. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all BS33-series carbs used on all water-cooled XJ700-X and XJ750-X models. NOTE: requires a $ 15.00 core charge, refundable upon the return of an undamaged, same-model, same-type set of lifter bracket.
    $ 19.95 + $ 15.00 refundable core charge

    HCP14202RP OEM re-plated carb starter - enrichment (“choke”) circuit PLUNGER LIFTER BRACKET, this is the choke plunger-lifter “finger” brackets used on the #4 carb. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all BS30-series carbs as used on all XJ650 Turbo, and on BS33-series carbs used on all water-cooled XJ700-X and XJ750-X models. NOTE: requires a $ 15.00 core charge, refundable upon the return of an undamaged, same-model, same-type set of lifter bracket.
    $ 15.95 + $ 15.00 refundable core charge


    HCP16792RP-SET4 OEM re-plated carb starter - enrichment (“choke”) circuit PLUNGER LIFTER BRACKETS, set of 4 of the choke plunger-lifter “finger” brackets. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all BS35- and BS36-series carbs as used on XJ900 models and BS34 carbs used on XJ1100 models. NOTE: requires a $ 30.00 core charge, refundable upon the return of an undamaged, same-model, same-type set of lifter brackets.
    $ 39.95 + $ 30.00 refundable core charge

    HCP16794RP OEM re-plated carb starter - enrichment (“choke”) circuit SHAFT ACTUATOR BRACKET, this is the choke shaft actuator bracket used at the outer end of that shaft (next to the #4 carb). Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all BS35- and BS36-series carbs as used on XJ900 models and BS34 carbs used on XJ1100 models. NOTE: requires a $ 15.00 core charge, refundable upon the return of an undamaged, same-model, same-type set of bracket.
    $ 19.95 + $ 15.00 refundable core charge



    HCP5157RP OEM Mikuni starter/choke shaft RETURN SPRING, fits all XJ550 models. Beautiful bright silver-zinc plating brings the top side of these carbs to life. NOTE: requires a $ 15.00 core charge, refundable upon the return of an undamaged, same-model, same-type spring.
    $ 19.95 + $ 15.00 refundable core charge

    HCP22374 OEM Mikuni starter/choke shaft pull handle RETURN SPRING, fits all 1992-98 XJ600 Seca II models. Each:
    $ 11.95



    Mikuni Carb Starter - Enrichment Circuit Fasteners:

    xx4) Aftermarket Mikuni Starter-Enrichment Circuit Arm-to-Shaft SET SCREW. These replacement screws are used to retain the starter lever "finger" bracket to the starter circuit shaft. Use 1 per carb, 4 of these screws per rack on all XJ550, 1984-85 FJ600, 1992-98 XJ600 Seca II, XJ650 Turbo, XJ700-X, XJ750-X, and XJ900RK models. XJ1100 and XS1100 models use a total of 5 screws per rack

    NOTE: originally, these screws were configured as follows:

    XJ550 all models used a panhead, phillips drive cone (pointed) tip set screw. This style screw is not currently available, and the HCP21375, HCP299, or HCP300 screws listed below are the recommended replacements.

    XJ650 Turbo, XJ900, XJ1100, and XS1100 models used a straight slot, cone (pointed) tip set screw. This style screw is the HCP21375 or HCP21376, and similar to the HCP299 and HCP300 screws listed below, with the main difference being that while the original screws used a straight blade slot, the HCP299 and HCP300 screws below employ a hex-drive.

    1984-85 FJ600, 1992-98 XJ600 Seca II, XJ700-X, and XJ750-X models used a panhead, phillips drive dog-point (blunt tip) set screw. This style screw is not currently available, although the HCP6828 screw below is very similar, with the main difference being that original screws used a phillips-drive head, while the replacement screws below employ a hex-drive.

    ALL models may use the HCP299, HCP300, HCP21375, HCP21376, or HCP6828 hex-drive set screws as a suitable replacement.



    HCP21376 Aftermarket Mikuni enrichment circuit lever arm-to-shaft SET SCREW, original straight-slot design, zinc-plated alloy steel. Slightly shorter than stock. Correct style for all XJ650 Turbo, XJ900, XJ1100, and XS1100 carbs, but will serve as suitable replacements for all XJ550, 1984-85 FJ600, 1992-98 XJ600 Seca II, XJ700-X, and XJ750-X models. Each:
    $ 1.95

    HCP21376SET4 Aftermarket Mikuni enrichment circuit lever arm-to-shaft SET SCREWS, set of 4:
    $ 7.50

    HCP21376SET5 Aftermarket Mikuni enrichment circuit lever arm-to-shaft SET SCREWS, set of 5:
    $ 8.95



    HCP21375 Aftermarket Mikuni enrichment circuit lever arm-to-shaft SET SCREW, original straight-slot design, 18-8 stainless steel. Slightly shorter than stock. Correct style for all XJ650 Turbo, XJ900, XJ1100, and XS1100 carbs, but will serve as suitable replacements for all XJ550, 1984-85 FJ600, 1992-98 XJ600 Seca II, XJ700-X, and XJ750-X models. Each:
    $ 1.95

    HCP21375SET4 Aftermarket Mikuni enrichment circuit lever arm-to-shaft SET SCREWS, set of 4:
    $ 7.50

    HCP21375SET5 Aftermarket Mikuni enrichment circuit lever arm-to-shaft SET SCREWS, set of 5:
    $ 8.95



    HCP299 Aftermarket Mikuni enrichment circuit lever arm-to-shaft cone-point SET SCREW, hex-key drive, black oxide coated alloy steel, slightly longer than stock. Correct style for all XJ650 Turbo, XJ900, XJ1100, and XS1100 carbs, but will serve as suitable replacements for all XJ550, 1984-85 FJ600, 1992-98 XJ600 Seca II, XJ700-X, and XJ750-X models. Each:
    $ 1.95

    HCP299SET4 Aftermarket Mikuni enrichment circuit lever arm-to-shaft SET SCREWS, set of 4:
    $ 6.95

    HCP299SET5 Aftermarket Mikuni enrichment circuit lever arm-to-shaft SET SCREWS, set of 5:
    $ 7.95



    HCP300 Aftermarket Mikuni enrichment circuit lever arm-to-shaft cone-point SET SCREW, hex-key drive, 18-8 stainless steel, slightly longer than stock. Correct style for all XJ650 Turbo, XJ900, XJ1100, and XS1100 carbs, but will serve as suitable replacements for all XJ550, 1984-85 FJ600, 1992-98 XJ600 Seca II, XJ700-X, and XJ750-X models. Each:
    $ 1.95

    HCP300SET4 Aftermarket Mikuni enrichment circuit lever arm-to-shaft SET SCREWS, set of 4:
    $ 6.95

    HCP300SET5 Aftermarket Mikuni enrichment circuit lever arm-to-shaft SET SCREWS, set of 5:
    $ 7.95



    HCP6828 Aftermarket Mikuni enrichment circuit lever arm-to-shaft blunt point SET SCREW, hex-key drive, 18-8 stainless steel, slightly longer than stock. Correct style for all 1984-85 FJ600, XJ700-X, and XJ750-X models, but will serve as suitable replacements for all XJ550, 1992-98 XJ600 Seca II, XJ650 Turbo, XJ900, XJ1100, and XS1100 models. Each:
    $ 2.95

    HCP6828SET4 Aftermarket Mikuni enrichment circuit lever arm-to-shaft SET SCREWS, set of 4:
    $ 10.95

    HCP6828SET5 Aftermarket Mikuni enrichment circuit lever arm-to-shaft SET SCREWS, set of 5:
    $ 12.95



    HCP4561 OEM Mikuni carb choke cable clamp bracket MOUNTING SCREW, alloy steel, panhead, phillips-drive. Secures the choke cable retaining clamp to the bracket located on the #1 carb hat. For use on all XJ550 models only, 1 per bike. Each.
    $ 2.95

    HCP911 Aftermarket Mikuni carb choke cable clamp bracket MOUNTING SCREW, zinc-plated alloy steel, panhead, phillips-drive. Secures the choke cable retaining clamp to the bracket located on the #1 carb hat. For use on all XJ550 models only, 1 per bike. Each:
    $ 1.95

    HCP1362 Aftermarket Mikuni carb choke cable clamp bracket MOUNTING SCREW, yellow cad-plated alloy steel, panhead, phillips-drive, with an integral lockwasher. Secures the choke cable retaining clamp to the bracket located on the #1 carb hat. For use on all XJ550 models only, 1 per bike. Each:
    $ 1.95

    HCP307 Aftermarket Mikuni carb choke cable clamp bracket MOUNTING SCREW, 18-8 stainless steel, panhead, phillips-drive. Secures the choke cable retaining clamp to the bracket located on the #1 carb hat. For use on all XJ550 models only, 1 per bike. Each:
    $ 1.50

    HCP24040 Aftermarket Mikuni carb choke cable clamp bracket MOUNTING SCREW, alloy steel, panhead, phillips-drive. Secures the choke cable retaining clamp to the bracket located on the #1 carb hat. For use on all XJ550 models only, 1 per bike. Each.
    $ 1.95

    HCP309 Aftermarket Mikuni carb choke cable clamp bracket MOUNTING SCREW, 18-8 stainless steel, button-head, hex-drive style. Secures the choke cable retaining clamp to the bracket located on the #1 carb hat. For use on all XJ550 models only, 1 per bike. Each:
    $ 1.00

    HCP311 Aftermarket Mikuni carb choke cable clamp bracket MOUNTING SCREW, 18-8 stainless steel, socket-head, hex-drive style. Secures the choke cable retaining clamp to the bracket located on the #1 carb hat. For use on all XJ550 models only, 1 per bike. Each:
    $ 1.00

    HCP312 Aftermarket Mikuni carb choke cable clamp bracket MOUNTING SCREW, black oxide-coated steel, socket-head, hex-drive style. Secures the choke cable retaining clamp to the bracket located on the #1 carb hat. For use on all XJ550 models only, 1 per bike. Each:
    $ 1.50



    HCP55 OEM Mikuni carb choke cable clamp bracket screw LOCK WASHER, zinc-plated alloy steel. For use on all XJ550 models only, Use 1 per bike, each:
    $ 1.95

    HCP913 Aftermarket Mikuni carb choke cable clamp bracket screw LOCK WASHER, zinc-plated alloy steel. For use on all XJ550 models only, 1 per bike, each.
    $ 1.00

    HCP57 Aftermarket Mikuni carb choke cable clamp bracket screw LOCK WASHER, 18-8 stainless steel. For use on all XJ550 models only, 1 per bike, each.
    $ 1.00

    HCP59 Aftermarket Mikuni carb choke cable clamp bracket screw LOCK WASHER, black oxide coated alloy steel. For use on all XJ550 models only, 1 per bike, each.
    $ 1.00



    MIKUNI UPPER RACK BRACKET HARDWARE:

    Mikuni Carb Upper Rack Brackets:

    Our re-plated Mikuni carb upper rack individual BRACKETS allow you to re-create the original look and beauty of these carb racks. These parts are available re-plated to their correct original silver- or yellow-zinc appearance. If you need to replace any missing hardware, or just want to create a show-winning look, then you should start your shopping list here! NOTE: all rack brackets are re-plated, used parts, and as such, may have minor cosmetic flaws (tooling marks, fastener marks, etc.). Most such marks will not be visible once installed. Also, all re-plated items require a refundable core charge which will be credited back to you once you return a same-model, same-type of item(s) as you purchased. Since these are re-plated used parts, we do require an exchange for your original parts so we can have a steady supply of parts to be processed and re-plated for future sales.


    HCP5480RP OEM re-plated carb upper rack lateral BRACKET, long L-shaped bracket carries and aligns all four carb bodies. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all BS28-series carbs as used on XJ550 Maxim, Seca, and XJ550 Euro models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 29.95 + $ 25.00 refundable core charge

    HCP14255RP OEM re-plated carb upper rack lateral BRACKET, long L-shaped bracket carries and aligns all four carb bodies. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all BS30-series carbs as used on XJ650 Turbo models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 39.95 + $ 25.00 refundable core charge

    HCP16337RP OEM re-plated carb upper rack lateral BRACKET, long L-shaped bracket carries and aligns all four carb bodies. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all BS33-series carbs as used on all water-cooled XJ700-X and XJ750-X models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 39.95 + $ 25.00 refundable core charge

    HCP14413RP OEM re-plated carb upper rack lateral bracket EXTENSION, short L-shaped bracket attaches to the ends of the HCP14633 bracket above. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all BS33-series carbs as used on all water-cooled XJ700-X and XJ750-X models. Use 2 per carb rack. Each. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 19.95 + $ 15.00 refundable core charge

    HCP16338RP OEM re-plated carb upper rack lateral BRACKET, long L-shaped bracket carries and aligns all four carb bodies. Beautiful silver-zinc plating brings the top side of these carbs to life. Fits all BS28-series carbs as used on all water-cooled XJ900 (with BS35 and BS36 series carbs) XJ1100 (BS34) models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 39.95 + $ 25.00 refundable core charge



    Mikuni Carb Upper Rack Bracket Clips:

    k26) Mikuni upper rack bracket CLIPS AND BRACKETS.

    HCP21527 Aftermarket Mikuni carb rack CLUTCH CABLE ROUTING CLIP, mounts on the upper rack bracket, #3 carb outer position, on all XJ650 Turbo models. Heavy wire "shepherd's crook" shaped clip is secured by the upper rack bracket screw, and captures and properly routes the clutch cable on its way to the clutch cover area. Perfectly replaces a commonly missing or rusted original. Use 1 per carb.
    $ 8.95

    HCP21528 Aftermarket Mikuni carb rack CLUTCH CABLE ROUTING CLIP, mounts on the upper rack bracket, #3 carb outer position, on all XJ900 models. Heavy wire "shepherd's crook" shaped clip is secured by the upper rack bracket screw, and captures and properly routes the clutch cable on its way to the clutch cover area. Perfectly replaces a commonly missing or rusted original. Use 1 per carb.
    $ 9.95



    Mikuni Carb Upper Rack Bracket Fasteners:

    a7) OEM and aftermarket Mikuni carb upper rack bracket MOUNTING SCREWS[/b], available in a variety of styles and finishes. NOTE: originally, these screws were an alloy steel, panhead, phillips-drive fastener with a zinc-plated finish, and did not use a lock washer.

    ALSO, these screws were originally installed (and should be re-installed) with a low-strength thread locking fluid applied.

    Therefore, these screws may be VERY difficult to remove and it is highly recommended that you obtain the correct size JIS style screwdriver (or an impact driver) to remove them without stripping the slots.


    For all XJ550, 1984-85 FJ600, FZ600, YX600, XJ650 Turbo, XJ700-X, XJ750-X, XJ900RK, RL, F, N, and FN models, XJ1100, and XS1100 models:

    - These panhead phillips-drive screws have a natural finish and are made from alloy steel:

    HCP60 OEM Mikuni carb upper rack bracket short MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive. All XJ550, 1984-85 FJ600, FZ600, YX600, XJ650 Turbo, all XJ900RK, RL, N/FN, and F models, and XJ1100 models use 8 of these screws. and XJ700-X and XJ750-X use 6 of these screws (except in the end positions, which use the long screws. Each:
    each:
    $ 2.95

    HCP60SET6 OEM Mikuni carb upper rack bracket short MOUNTING SCREWS, set of 6:
    $ 16.95

    HCP60SET8 OEM Mikuni carb upper rack bracket short MOUNTING SCREWS, set of 8:
    $ 22.50



    HCP2940 OEM Mikuni carb upper rack bracket long MOUNTING SCREW, end screws for XJ700-X and XJ750-X models only. These panhead, phillips-drive, alloy steel screws have a dark grey plated finish, and are approximately 2mm longer than stock, each:
    $ 3.50

    HCP2940SET2 OEM Mikuni carb upper rack bracket long MOUNTING SCREWS, set of 2:
    $ 6.75



    HCP9180 OEM Mikuni carb upper rack bracket MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive, fits all 1980-81 XS1100 G/SG/H/SH models, use 8 per rack, each:
    $ 1.95

    HCP9180SET8 OEM Mikuni carb upper rack bracket MOUNTING SCREWS, set of 8:
    $ 15.25


    HCP168 OEM Mikuni carb upper rack bracket MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive, fits all 1980-81 XS1100 LG/LH models, use 8 per rack, each:
    $ 1.00

    HCP168SET8 OEM Mikuni carb upper rack bracket MOUNTING SCREWS, set of 8:
    $ 7.95




    HCP910 Aftermarket Mikuni carb upper rack bracket short MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive, fits all XJ550, 1984-85 FJ600, XJ650 Turbo, XJ700-X and XJ750-X (except in the end positions), all XJ900RK, RL, N/FN, and F models, XJ1100, and 1980-81 XS1100 LG/LH models, each:
    $ 1.50

    HCP910SET6 Aftermarket Mikuni carb upper rack bracket short MOUNTING SCREWS, set of 6:
    $ 8.50

    HCP910SET8 Aftermarket Mikuni carb upper rack bracket short MOUNTING SCREWS, set of 8:
    $ 10.95



    HCP2643 Aftermarket Mikuni carb upper rack bracket long MOUNTING SCREW, end screws for XJ700-X and XJ750-X models only, zinc-plated alloy-steel, panhead, phillips-drive, approximately 2mm longer than stock, panhead phillips drive. Use 4 per bowl, each:
    $ 1.75

    HCP2643SET2 Aftermarket Mikuni carb upper rack bracket long MOUNTING SCREWS, set of 2:
    $ 3.25



    HCP21368 Aftermarket Mikuni carb upper rack bracket MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive, fits all 1980-81 XS1100 G/SG/H/SH models, each:
    $ 1.00

    HCP21368SET8 Aftermarket Mikuni carb upper rack bracket MOUNTING SCREWS, set of 8:
    $ 7.95



    - These replacement panhead phillips-drive screws have a polished finish and are made from 18-8 stainless steel:

    HCP62 Aftermarket Mikuni carb upper rack bracket short MOUNTING SCREW, 18-8 stainless-steel, panhead, phillips-drive, fits all XJ550, 1984-85 FJ600, XJ650 Turbo, XJ700-X and XJ750-X (except in the end positions), all XJ900RK, RL, N/FN, and F models, XJ1100, and 1980-81 XS1100 LG/LH models, each:
    $ 1.50

    HCP62SET6 Aftermarket Mikuni carb upper rack bracket short MOUNTING SCREWS, set of 6:
    $ 8.25

    HCP62SET8 Aftermarket Mikuni carb upper rack bracket short MOUNTING SCREWS, set of 8:
    $ 10.95



    HCP302 Aftermarket Mikuni carb upper rack bracket long MOUNTING SCREW, end screws for XJ700-X and XJ750-X models only, 18-8 stainless-steel, panhead, phillips-drive, approximately 2mm longer than stock, each:
    $ 1.50

    HCP302SET2 Aftermarket Mikuni carb upper rack bracket long MOUNTING SCREWS, set of 2:
    $ 2.75



    HCP5889 Aftermarket Mikuni carb upper rack bracket MOUNTING SCREW, 18-8 stainless-steel, panhead, phillips-drive, fits all 1980-81 XS1100 G/SG/H/SH models, each:
    $ 1.25

    HCP5889SET8 Aftermarket Mikuni carb upper rack bracket MOUNTING SCREWS, set of 8:
    $ 9.25



    - These replacement button head hex-drive screws have a polished finish and are made from 18-8 stainless steel:

    HCP308 Aftermarket Mikuni carb upper rack bracket short MOUNTING SCREW, 18-8 stainless-steel, polished button head, hex-drive, fits all XJ550, 1984-85 FJ600, XJ650 Turbo, XJ700-X and XJ750-X (except in the end positions), all XJ900RK, RL, N/FN, and F models, XJ1100, and 1980-81 XS1100 LG/LH models, each:
    $ 1.25

    HCP308SET6 Aftermarket Mikuni carb upper rack bracket short MOUNTING SCREWS, set of 6:
    $ 6.50

    HCP308SET8 Aftermarket Mikuni carb upper rack bracket short MOUNTING SCREWS, set of 8:
    $ 7.25


    HCP303 Aftermarket Mikuni carb upper rack bracket long MOUNTING SCREW, end screws for XJ700-X and XJ750-X models only, 18-8 stainless-steel, polished button head, hex-drive, approximately 2mm longer than stock, each:
    $ 1.95

    HCP303SET2 Aftermarket Mikuni carb upper rack bracket long MOUNTING SCREWS, set of 2:
    $ 3.75



    HCP21372 Aftermarket Mikuni carb upper rack bracket MOUNTING SCREW, 18-8 stainless-steel, polished button head, hex-drive, fits all 1980-81 XS1100 G/SG/H/SH models, each:
    $ 1.25

    HCP21372SET8 Aftermarket Mikuni carb upper rack bracket MOUNTING SCREWS, set of 8:
    $ 9.25



    - These replacement socket head hex-drive screws have a smooth, polished head and are made from 18-8 stainless steel:

    HCP310 Aftermarket Mikuni carb upper rack bracket short MOUNTING SCREW, 18-8 stainless steel, smooth polished socket head, hex-drive, fits all XJ550, 1984-85 FJ600, XJ650 Turbo, XJ700-X and XJ750-X (except in the end positions), all XJ900RK, RL, N/FN, and F models, XJ1100, and 1980-81 XS1100 LG/LH models, each:
    $ 1.50

    HCP310SET6 Aftermarket Mikuni carb upper rack bracket short MOUNTING SCREWS, set of 6:
    $ 5.95

    HCP310SET8 Aftermarket Mikuni carb upper rack bracket short MOUNTING SCREWS, set of 8:
    $ 6.95



    HCP56 Aftermarket Mikuni carb upper rack bracket long MOUNTING SCREW, end screws for XJ700-X and XJ750-X models only, 18-8 stainless steel, smooth polished socket head, hex-drive, approximately 2mm longer than stock, each:
    $ 1.95

    HCP56SET2 Aftermarket Mikuni carb upper rack bracket long MOUNTING SCREWS, set of 2:
    $ 3.75



    HCP21370 Aftermarket Mikuni carb upper rack bracket MOUNTING SCREW, 18-8 stainless steel, smooth polished socket head, hex-drive, fits all 1980-81 XS1100 G/SG/H/SH models, each:
    $ 1.00

    HCP21370SET8 Aftermarket Mikuni carb upper rack bracket MOUNTING SCREWS, set of 8:
    $ 7.95



    - These replacement socket head, hex-drive screws have a black oxide-coated finish and are made from alloy steel:

    HCP64 Aftermarket Mikuni carb upper rack bracket short MOUNTING SCREW, black oxide-coated steel, ribbed socket head, hex-drive, fits all XJ550, 1984-85 FJ600, XJ650 Turbo, XJ700-X and XJ750-X (except in the end positions), all XJ900RK, RL, N/FN, and F models, XJ1100, and 1980-81 XS1100 LG/LH models, each:
    $ 1.00

    HCP64SET6 Aftermarket Mikuni carb upper rack bracket short MOUNTING SCREWS, set of 6:
    $ 4.75

    HCP64SET8 Aftermarket Mikuni carb upper rack bracket short MOUNTING SCREWS, set of 8:
    $ 6.95



    HCP58 Aftermarket Mikuni carb upper rack bracket long MOUNTING SCREW, end screws for XJ700-X and XJ750-X models only, black oxide-coated steel, ribbed socket head, hex-drive, approximately 2mm longer than stock, each:
    $ 1.50

    HCP58SET2 Aftermarket Mikuni carb upper rack bracket long MOUNTING SCREWS, set of 2:
    $ 2.75



    HCP21371 Aftermarket Mikuni carb upper rack bracket MOUNTING SCREW, black oxide-coated steel, ribbed socket head, hex-drive, fits all 1980-81 XS1100 G/SG/H/SH models, each:
    $ 1.00

    HCP21371SET8 Aftermarket Mikuni carb upper rack bracket MOUNTING SCREWS, set of 8:
    $ 7.95



    For all 1992-98 XJ600 Seca II models:

    - These replacement panhead phillips-drive screws have a natural finish and are made from alloy steel:

    HCP60 OEM Mikuni carb upper rack bracket short MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive. For all 1992-98 XJ600 Seca II models. The forward (front) brackets use 6 of these screws, and two of the long screws below; the rear upper bracket (joining carbs #2 and #3 together) uses 4 of these screws, each:
    $ 2.95

    HCP60SET6 OEM Mikuni carb upper rack bracket short MOUNTING SCREWS, set of 6:
    $ 16.95

    HCP60SET10 OEM Mikuni carb upper rack bracket short MOUNTING SCREWS, set of 10:
    $ 22.50


    HCP304 OEM Mikuni carb upper rack bracket long MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive. Use 2 per carb on all 1992-98 XJ600 Seca II models on the forward (front) bracket that also secures the choke system pull-handle to the #1 carb. Each.
    $ 4.95




    HCP910 Aftermarket Mikuni carb upper rack bracket short MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive. For all 1992-98 XJ600 Seca II models. The forward (front) brackets use 6 of these screws, and two of the long screws below; the rear upper bracket (joining carbs #2 and #3 together) uses 4 of these screws, each:
    $ 1.50

    HCP910SET6 Aftermarket Mikuni carb upper rack bracket short MOUNTING SCREWS, set of 6:
    $ 8.50

    HCP910SET10 Aftermarket Mikuni carb upper rack bracket short MOUNTING SCREWS, set of 10:
    $ 13.95


    HCP911 Aftermarket Mikuni carb upper rack bracket long MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive. Use 2 per carb on all 1992-98 XJ600 Seca II models on the bracket that also secures the choke system pull-handle to the #1 carb. Each.
    $ 1.95




    - These replacement panhead phillips-drive screws have a polished finish and are made from 18-8 stainless steel:

    HCP62 Aftermarket Mikuni carb upper rack bracket short MOUNTING SCREW, 18-8 stainless-steel, panhead, phillips-drive. For all 1992-98 XJ600 Seca II models. The forward (front) brackets use 6 of these screws, and two of the long screws below; the rear upper bracket (joining carbs #2 and #3 together) uses 4 of these screws, each:
    $ 1.50

    HCP62SET6 Aftermarket Mikuni carb upper rack bracket short MOUNTING SCREWS, set of 6:
    $ 8.25

    HCP62SET10 Aftermarket Mikuni carb upper rack bracket short MOUNTING SCREWS, set of 10:
    $ 12.95


    HCP307 Aftermarket Mikuni carb upper rack bracket long MOUNTING SCREW, 18-8 stainless-steel, panhead, phillips-drive. Use 2 per carb on all 1992-98 XJ600 Seca II models on the bracket that also secures the choke system pull-handle to the #1 carb. Each.
    $ 1.50




    - These replacement button head hex-drive screws have a polished finish and are made from 18-8 stainless steel:

    HCP308 Aftermarket Mikuni carb upper rack bracket short MOUNTING SCREW, 18-8 stainless-steel, polished button head, hex-drive. For all 1992-98 XJ600 Seca II models. The forward (front) brackets use 6 of these screws, and two of the long screws below; the rear upper bracket (joining carbs #2 and #3 together) uses 4 of these screws, each:
    $ 1.25

    HCP308SET6 Aftermarket Mikuni carb upper rack bracket short MOUNTING SCREWS, set of 6:
    $ 6.50

    HCP308SET10 Aftermarket Mikuni carb upper rack bracket short MOUNTING SCREWS, set of 10:
    $ 9.95


    HCP309 Aftermarket Mikuni carb upper rack bracket long MOUNTING SCREW, 18-8 stainless-steel, polished button head, hex-drive. Use 2 per carb on all 1992-98 XJ600 Seca II models on the bracket that also secures the choke system pull-handle to the #1 carb. Each.
    $ 1.00




    - These replacement socket head hex-drive screws have a smooth, polished head and are made from 18-8 stainless steel:

    HCP310 Aftermarket Mikuni carb upper rack bracket short MOUNTING SCREW, 18-8 stainless steel, smooth polished socket head, hex-drive. For all 1992-98 XJ600 Seca II models. The forward (front) brackets use 6 of these screws, and two of the long screws below; the rear upper bracket (joining carbs #2 and #3 together) uses 4 of these screws, each:
    $ 1.50

    HCP310SET6 Aftermarket Mikuni carb upper rack bracket short MOUNTING SCREWS, set of 6:
    $ 5.95

    HCP310SET10 Aftermarket Mikuni carb upper rack bracket short MOUNTING SCREWS, set of 10:
    $ 8.95


    HCP311 Aftermarket Mikuni carb upper rack bracket long MOUNTING SCREW, 18-8 stainless steel, smooth polished socket head, hex-drive Use 2 per carb on all 1992-98 XJ600 Seca II models on the bracket that also secures the choke system pull-handle to the #1 carb. Each.
    $ 1.00




    - These replacement socket head hex-drive screws have a black oxide-coated finish and are made from alloy steel:

    HCP64 Aftermarket Mikuni carb upper rack bracket short MOUNTING SCREW, black oxide-coated steel, ribbed socket head, hex-drive. . For all 1992-98 XJ600 Seca II models. The forward (front) brackets use 6 of these screws, and two of the long screws below; the rear upper bracket (joining carbs #2 and #3 together) uses 4 of these screws, each:
    $ 1.00

    HCP64SET6 Aftermarket Mikuni carb upper rack bracket short MOUNTING SCREWS, set of 6:
    $ 4.75

    HCP64SET10 Aftermarket Mikuni carb upper rack bracket short MOUNTING SCREWS, set of 10:
    $ 7.95


    HCP312 Aftermarket Mikuni carb upper rack bracket long MOUNTING SCREW, black oxide-coated steel, ribbed socket head, hex-drive. Use 2 per carb on all 1992-98 XJ600 Seca II models on the bracket that also secures the choke system pull-handle to the #1 carb. Each.
    $ 1.50




    MIKUNI CARB LOWER RACK BRACKET HARDWARE:

    Mikuni Carb Lower Rack Brackets:

    Our re-plated Mikuni carb lower rack individual BRACKETS allow you to re-create the original look and beauty of these carb racks. These parts are available re-plated to their correct original silver- or yellow-zinc appearance. If you need to replace any missing hardware, or just want to create a show-winning look, then you should start your shopping list here! NOTE: all rack brackets are re-plated, used parts, and as such, may have minor cosmetic flaws (tooling marks, fastener marks, etc.). Most such marks will not be visible once installed. Also, all re-plated items require a refundable core charge which will be credited back to you once you return a same-model, same-type of item(s) as you purchased. Since these are re-plated used parts, we do require an exchange for your original parts so we can have a steady supply of parts to be processed and re-plated for future sales.


    HCP5481RP OEM re-plated carb lower rack lateral BRACKET, long L-shaped bracket carries and aligns all four carb bodies. Beautiful silver-zinc plating brings the bottom side of these carbs to life. Fits all BS28-series carbs as used on XJ550 Maxim, Seca, and XJ550 Euro models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 29.95 + $ 25.00 refundable core charge

    HCP14256RP OEM re-plated carb lower rack lateral BRACKET, long L-shaped bracket carries and aligns all four carb bodies. Beautiful silver-zinc plating brings the bottom side of these carbs to life. Fits all BS30-series carbs as used on XJ650 Turbo models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 39.95 + $ 25.00 refundable core charge


    HCP16339RP OEM re-plated carb lower rack lateral BRACKET, long L-shaped bracket carries and aligns all four carb bodies. Beautiful silver-zinc plating brings the bottom side of these carbs to life. Fits all BS33-series carbs as used on all water-cooled XJ700-X and XJ750-X models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 39.95 + $ 25.00 refundable core charge

    HCP17741RP OEM re-plated carb lower rack lateral bracket EXTENSION, short L-shaped bracket attaches to the ends of the HCP14633 bracket above. Beautiful silver-zinc plating brings the bottom side of these carbs to life. Fits all BS33-series carbs as used on all water-cooled XJ700-X and XJ750-X models. Use 2 per carb rack. Each. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 19.95 + $ 15.00 refundable core charge


    HCP16340RP OEM re-plated carb lower rack lateral BRACKET, long L-shaped bracket carries and aligns all four carb bodies. Beautiful silver-zinc plating brings the bottom side of these carbs to life. Fits all BS35- and BS36-series carbs as used on XJ900 models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 39.95 + $ 25.00 refundable core charge

    HCP16341RP OEM re-plated carb lower rack lateral BRACKET, long L-shaped bracket carries and aligns all four carb bodies. Beautiful silver-zinc plating brings the bottom side of these carbs to life. Fits all BS34-series carbs as used on all XJ1100 models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 39.95 + $ 25.00 refundable core charge


    HCP14257RP OEM re-plated carb lower rack lateral bracket IDLE SPEED BOLT EXTENSION, this bracket carries the idle speed adjuster bolt. Beautiful silver-zinc plating brings the bottom side of these carbs to life. Fits all all XJ550, XJ650 Turbo, XJ700-X, XJ750-X, and all XJ900 (BS35 and BS36 series) carbs. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 29.95 + $ 25.00 refundable core charge

    HCP18260RP OEM re-plated carb lower rack lateral bracket IDLE SPEED BOLT EXTENSION, this bracket carries the idle speed adjuster bolt. Beautiful silver-zinc plating brings the bottom side of these carbs to life. Fits all BS34-series carbs as used on all XJ1100 models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type bracket.
    $ 39.95 + $ 25.00 refundable core charge


    HCP9848 Aftermarket Mikuni idle speed screw rubber GROMMET, fits into the lower carb rack islde speed adjustment bolt loop opening where the idle speed screw enters the bracket. This replacement grommet is quite a bit larger than the stock grommet, but fits and works properly. Use a little bit of silicone grease on the screw's shaft where it passes through this grommet and it will be silky-smooth in operation. Fits all XJ550, XJ650 Turbo, XJ700-X, XJ750-X, and XJ900 (BS and BS36 series) carbs
    $ 1.95



    HCP5488RP OEM re-plated carb lower rack bracket BOWL HEAT SHIELD, this large curved should covers the entire length and width of the carb rack and is fastened to the lower rack bracket. Beautiful silver-zinc plating brings the bottom side of these carbs to life. Fits all BS28-series carbs as used on XJ550 Maxim, Seca, and XJ550 Euro models. NOTE: requires a $ 25.00 core charge, refundable upon the return of an undamaged, same-model, same-type shield.
    $ 49.95 + $ 25.00 refundable core charge



    Mikuni Carb Lower Rack Bracket Fasteners:

    e7) OEM and aftermarket Mikuni carb lower rack bracket MOUNTING SCREWS, available in a variety of styles, materials, and finishes.

    NOTE: originally, these screws were a natural finish, panhead phillips-drive style and only the XJ550 and XS1100 LG/LH (Midnight Special) models used a lockwasher.

    ALSO, these screws were originally installed (and should be re-installed) with a low-strength thread locking fluid applied.

    Therefore, these screws may be VERY difficult to remove and it is highly recommended that you obtain the correct size JIS style screwdriver (or an impact driver) to remove them without stripping the slots.

    These screws require the use of a semi-permanent thread-locker fluid during installation.


    For all XJ550, 1984-85 FJ600, FZ600, YX600, XJ650 Turbo, XJ700-X, XJ750-X, all XJ900RK, RL, N/FN, and F models, XJ1100, and all XS1100 models:

    - These replacement panhead phillips-drive screws have a natural finish and are made from alloy steel:

    HCP1030 OEM Mikuni carb lower rack bracket short MOUNTING SCREW, dark grey plated alloy-steel, panhead, phillips-drive. XJ550 and 1980-81 XS1100 LG/LH (Midnight Special) models should also use the HCP315 lockwashers with these screws. Each:
    $ 1.95

    HCP1030SET6 OEM Mikuni carb lower rack bracket short MOUNTING SCREWS, set of 6:
    $ 7.95

    HCP1030SET8 OEM Mikuni carb lower rack bracket short MOUNTING SCREWS, set of 8:
    $ 9.95



    HCP1901 OEM Mikuni carb lower rack bracket long MOUNTING SCREW, dark grey plated alloy-steel, panhead, phillips-drive, used in the outermost end holes only on XJ700-X and XJ750-X models, each:
    $ 1.95

    HCP1901SET2 OEM Mikuni carb lower rack bracket long MOUNTING SCREWS, set of 2:
    $ 2.95



    HCP2922 Aftermarket Mikuni carb lower rack bracket short MOUNTING SCREW, bright zinc-plated alloy-steel, panhead, phillips-drive. XJ550 and 1980-81 XS1100 LG/LH (Midnight Special) models should also use the HCP916 lockwashers with these screws. Each:
    $ 1.25

    HCP2922SET6 Aftermarket Mikuni carb lower rack bracket short MOUNTING SCREWS, set of 6:
    $ 6.95

    HCP2922SET8 Aftermarket Mikuni carb lower rack bracket short MOUNTING SCREWS, set of 8:
    $ 8.95



    HCP21363 Aftermarket Mikuni carb lower rack bracket long MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive, used in the outermost end holes only on XJ700-X and XJ750-X models, each.
    $ 1.50

    HCP21363SET2 Aftermarket Mikuni carb lower rack bracket long MOUNTING SCREWS, set of 2:
    $ 2.50



    HCP21362 Aftermarket Mikuni carb lower rack bracket short MOUNTING SCREW, 18-8 stainless-steel, panhead, phillips-drive. XJ550 and 1980-81 XS1100 LG/LH (Midnight Special) models should also use the HCP319 lockwashers with these screws. Each:
    $ 1.50

    HCP21362SET6 Aftermarket Mikuni carb lower rack bracket short MOUNTING SCREWS, set of 6:
    $ 8.00

    HCP21362SET8 Aftermarket Mikuni carb lower rack bracket short MOUNTING SCREWS, set of 8:
    $ 10.50



    HCP2923 Aftermarket Mikuni carb lower rack bracket long MOUNTING SCREW, 18-8 stainless-steel, panhead, phillips-drive, used in the outermost end holes only on XJ700-X and XJ750-X models, each.
    $ 1.95

    HCP2923SET2 Aftermarket Mikuni carb lower rack bracket long MOUNTING SCREWS, set of 2:
    $ 3.75




    - These replacement button head hex-drive screws have a polished finish and are made from 18-8 stainless steel:

    HCP6714 Aftermarket Mikuni carb lower rack bracket short MOUNTING SCREW, 18-8 stainless-steel, polished button head, hex-drive. XJ550 and 1980-81 XS1100 LG/LH (Midnight Special) models should also use the HCP319 lockwashers with these screws. Each:
    $ 1.50

    HCP6714SET6 Aftermarket Mikuni carb lower rack bracket short MOUNTING SCREWS, set of 6:
    $ 8.50

    HCP6714SET8 Aftermarket Mikuni carb lower rack bracket short MOUNTING SCREWS, set of 8:
    $ 11.00



    HCP6713 Aftermarket Mikuni carb lower rack bracket long MOUNTING SCREW, 18-8 stainless-steel, polished button head, hex-drive, used in the outermost end holes only on XJ700-X and XJ750-X models, each:
    $ 1.95

    HCP6713SET2 Aftermarket Mikuni carb lower rack bracket long MOUNTING SCREWS, set of 2:
    $ 3.75




    - These replacement socket head hex-drive screws have a smooth polished head and are made from 18-8 stainless steel:

    HCP6716 Aftermarket Mikuni carb lower rack bracket short MOUNTING SCREW, s18-8 stainless steel, smooth polished socket head, hex-drive. XJ550 and 1980-81 XS1100 LG/LH (Midnight Special) models should also use the HCP319 lockwashers with these screws. Each:
    $ 1.50

    HCP6716SET6 Aftermarket Mikuni carb lower rack bracket short MOUNTING SCREWS, set of 6:
    $ 5.95

    HCP6716SET8 Aftermarket Mikuni carb lower rack bracket short MOUNTING SCREWS, set of 8:
    $ 8.95



    HCP6639 Aftermarket Mikuni carb lower rack bracket long MOUNTING SCREW, 18-8 stainless steel, smooth polished socket head, hex-drive, used in the outermost end holes only on XJ700-X and XJ750-X models, each:
    $ 1.95

    HCP6639SET2 Aftermarket Mikuni carb lower rack bracket long MOUNTING SCREWS, set of 2:
    $ 2.95




    - These replacement socket head hex-drive screws have a black oxide-coated finish and are made from alloy steel:

    HCP6715 Aftermarket Mikuni carb lower rack bracket short MOUNTING SCREW, black oxide-coated steel, ribbed socket head, hex-drive. XJ550 and 1980-81 XS1100 LG/LH (Midnight Special) models should also use the HCP321 lockwashers with these screws. Each:
    $ 1.25

    HCP6715SET6 Aftermarket Mikuni carb lower rack bracket short MOUNTING SCREWS, set of 6:
    $ 6.95

    HCP6715SET8 Aftermarket Mikuni carb lower rack bracket short MOUNTING SCREWS, set of 8:
    $ 8.95



    HCP6640 Aftermarket Mikuni carb lower rack bracket long MOUNTING SCREW, black oxide-coated steel, ribbed socket head, hex-drive, used in the outermost end holes only on XJ700-X and XJ750-X models, each:
    $ 1.95

    HCP6640SET2 Aftermarket Mikuni carb lower rack bracket long MOUNTING SCREWS, set of 2:
    $ 2.95





    HCP315 OEM Mikuni lower rack bracket screw LOCK WASHER, zinc-plated alloy steel. Used on all XJ550 and 1980-81 XS1100 LG/LH (Midnight Special) models. Each:
    $ 2.95

    HCP315SET8 OEM Mikuni lower rack bracket screw LOCK WASHER, set of 8:
    $ 21.95


    HCP916 Aftermarket Mikuni lower rack bracket screw LOCK WASHER, zinc-plated alloy steel. Used on all XJ550 and 1980-81 XS1100 LG/LH (Midnight Special) models. Each:
    $ 1.25

    HCP916SET8 Aftermarket Mikuni lower rack bracket screw LOCK WASHER, set of 8:
    $ 8.95


    HCP319 Aftermarket Mikuni lower rack bracket screw LOCK WASHER, 18-8 stainless steel. Used on all XJ550 and 1980-81 XS1100 LG/LH (Midnight Special) models. Each:
    $ 1.50

    HCP319SET8 Aftermarket Mikuni lower rack bracket screw LOCK WASHER, set of 8:
    $ 9.95


    HCP321 Aftermarket Mikuni lower rack bracket screw LOCK WASHER, black oxide-coated alloy steel. Used on all XJ550 and 1980-81 XS1100 LG/LH (Midnight Special) models. Each:
    $ 1.75

    HCP321SET8 Aftermarket Mikuni lower rack bracket screw LOCK WASHER, set of 8:
    $ 11.95




    For all 1992-98 XJ600 Seca II models:

    HCP60 OEM Mikuni carb lower rack bracket MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive, fits all 1992-96 XJ600 Seca II models, use 8 per rack, each:
    $ 2.95

    HCP60SET8 OEM Mikuni carb lower rack bracket short MOUNTING SCREWS, set of 8:
    $ 22.50



    HCP168 OEM Mikuni carb lower rack bracket MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive, fits all 1997-98 XJ600 Seca II models, each:
    $ 1.00

    HCP168SET8 OEM Mikuni carb lower rack bracket MOUNTING SCREWS, set of 8:
    $ 7.95




    HCP910 Aftermarket Mikuni carb lower rack bracket MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive, fits all 1992-98 XJ600 Seca II models, use a total of 18 per rack, each:
    $ 1.50

    HCP910SET8 Aftermarket Mikuni carb lower rack bracket MOUNTING SCREWS, set of 8:
    $ 10.95



    - These replacement panhead phillips-drive screws have a polished finish and are made from 18-8 stainless steel:

    HCP62 Aftermarket Mikuni carb lower rack bracket MOUNTING SCREW, 18-8 stainless-steel, panhead, phillips-drive, fits all 1992-98 XJ600 Seca II models, use a total of 18 per rack, each:
    $ 1.50

    HCP62SET8 Aftermarket Mikuni carb lower rack bracket MOUNTING SCREWS, set of 8:
    $ 10.95



    - These replacement button head hex-drive screws have a polished finish and are made from 18-8 stainless steel:

    HCP308 Aftermarket Mikuni carb lower rack bracket MOUNTING SCREW, 18-8 stainless-steel, polished button head, hex-drive, fits all 1992-98 XJ600 Seca II models, use 8 per rack, each:
    $ 1.25

    HCP308SET8 Aftermarket Mikuni carb lower rack bracket MOUNTING SCREWS, set of 8:
    $ 7.25




    - These replacement socket head hex-drive screws have a smooth, polished head and are made from 18-8 stainless steel:

    HCP310 Aftermarket Mikuni carb lower rack bracket MOUNTING SCREW, 18-8 stainless steel, smooth polished socket head, hex-drive, fits all 1992-98 XJ600 Seca II models, use 8 per rack, each:
    $ 1.50

    HCP310SET8 Aftermarket Mikuni carb lower rack bracket MOUNTING SCREWS, set of 8:
    $ 6.95



    - These replacement socket head, hex-drive screws have a black oxide-coated finish and are made from alloy steel:

    HCP64 Aftermarket Mikuni carb lower rack bracket MOUNTING SCREW, black oxide-coated steel, ribbed socket head, hex-drive, fits all 1992-98 XJ600 Seca II models, use 8 per rack, each:
    $ 1.00

    HCP64SET8 Aftermarket Mikuni carb lower rack bracket MOUNTING SCREWS, set of 8:
    $ 6.95




    MIKUNI CARB FLOAT BOWL HARDWARE:

    bds2) OEM and aftermarket Mikuni carb bowl-to-body MOUNTING SCREW, available in a variety of styles, materials, and finishes. All Mikuni model carbs originally used an alloy steel, panhead, phillips-drive, with a zinc-plated finish, and used an integral lockwasher (except for the 1992-98 XJ600 Seca II models, which used lockwashers only on the screws that secured the idle speed support bracket to the bowls at its 3 mounting positions; all of the other bowl screws did not use lockwashers).

    Current OEM and most of the aftermarket screws do not have the integral lockwasher, and a separate lockwasher must be ordered from the selection listed further below for those models that require them.


    For XJ550, FZ600, and YX600 Radian models:

    HCP3696 OEM Mikuni carb bowl-to-body MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive. Use 4 per bowl, each:
    $ 2.50

    HCP3696SET4 OEM Mikuni carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 9.50

    HCP3696SET16 OEM Mikuni carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 34.00



    HCP5482 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive. Use 4 per bowl, each:
    $ 1.00

    HCP5482SET4 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 3.50

    HCP5482SET16 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 8.95



    HCP21356 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREW, 18-8 stainless-steel, panhead, phillips-drive. Use 4 per bowl, each:
    $ 1.50

    HCP21356SET4 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 4.95

    HCP21356SET16 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 12.95



    HCP5486 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREW, phillips-drive panhead screw with gold chromate finish. Has an integral lockwasher. Use 4 per bowl, each:
    $ 1.95

    HCP5486SET4 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 7.50

    HCP5486SET16 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 22.95



    HCP5485 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREW, 18-8 stainless-steel, polished button head, hex-drive. Use 4 per bowl, each:
    $ 1.50

    HCP5485SET4 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 4.95

    HCP5485SET16 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 10.95



    HCP5483 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREW, 18-8 stainless steel, smooth polished socket head, hex-drive. Use 4 per bowl, each:
    $ 1.50

    HCP5483SET4 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 5.25

    HCP5483SET16 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 14.95



    HCP5484 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREW, black oxide-coated steel, ribbed socket head, hex-drive. Use 4 per bowl, each:
    $ 1.50

    HCP5484SET4 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 4.95

    HCP5484SET16 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 10.95




    For 1992-98 XJ600 Seca II models:

    NOTE: these models use short mounting screws, without lockwashers, in all positions except for the three (3) screws that hold the idle speed bracket to the #2 and #3 carb bowls ---- and those long screws do require the use of a lockwasher.

    1992-98 models originally used bright (zinc-plated) fasteners, while the 1998 models used black fasteners.


    HCP3696 OEM Mikuni carb bowl-to-body short MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive. Use 4 per bowl, each:
    $ 2.50

    HCP3696SET4 OEM Mikuni carb bowl-to-body short MOUNTING SCREWS, set of 4:
    $ 9.50

    HCP3696SET13 OEM Mikuni carb bowl-to-body short MOUNTING SCREWS, set of 13:
    $ 27.95



    HCP5482 Aftermarket Mikuni carb bowl-to-body short MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive. Use 4 per bowl, each:
    $ 1.00

    HCP5482SET4 Aftermarket Mikuni carb bowl-to-body short ]MOUNTING SCREWS, set of 4:
    $ 3.50

    HCP5482SET13 Aftermarket Mikuni carb bowl-to-body short MOUNTING SCREWS, set of 13:
    $ 7.95


    HCP6065 Aftermarket Mikuni carb bowl-to-body long MOUNTING SCREW, zinc-plated alloy-steel, panhead, phillips-drive. Lockwashers should be used with these screws and can be ordered separate below. Use 3 per rack, each:
    $ 1.50

    HCP6065SET3 Aftermarket Mikuni carb bowl-to-body long MOUNTING SCREWS, set of 3:
    $ 3.95




    HCP21356 Aftermarket Mikuni carb bowl-to-body short MOUNTING SCREW, 18-8 stainless-steel, panhead, phillips-drive. Use 4 per bowl, each:
    $ 1.50

    HCP21356SET4 Aftermarket Mikuni carb bowl-to-body short MOUNTING SCREWS, set of 4:
    $ 4.95

    HCP21356SET13 Aftermarket Mikuni carb bowl-to-body short MOUNTING SCREWS, set of 13:
    $ 10.95


    HCP6067 Aftermarket Mikuni carb bowl-to-body long MOUNTING SCREW, 18-8 stainless-steel, panhead, phillips-drive. Lockwashers should be used with these screws and can be ordered separate below. Use 3 per rack, each:
    $ 1.95

    HCP6067SET3 Aftermarket Mikuni carb bowl-to-body long MOUNTING SCREWS, set of 3:
    $ 5.25




    HCP5485 Aftermarket Mikuni carb bowl-to-body short MOUNTING SCREW, 18-8 stainless-steel, polished button head, hex-drive. Use 4 per bowl, each:
    $ 1.50

    HCP5485SET4 Aftermarket Mikuni carb bowl-to-body short MOUNTING SCREWS, set of 4:
    $ 4.95

    HCP5485SET13 Aftermarket Mikuni carb bowl-to-body short MOUNTING SCREWS, set of 13:
    $ 9.95


    HCP22612 Aftermarket Mikuni carb bowl-to-body long MOUNTING SCREW, 18-8 stainless-steel, polished button head, hex-drive. Lockwashers should be used with these screws and can be ordered separate below. Use 3 per rack, each:
    $ 1.95

    HCP22612SET3 Aftermarket Mikuni carb bowl-to-body long MOUNTING SCREWS, set of 3:
    $ 5.25




    HCP5483 Aftermarket Mikuni carb bowl-to-body short MOUNTING SCREW, 18-8 stainless steel, smooth polished socket head, hex-drive. Use 4 per bowl, each:
    $ 1.50

    HCP5483SET4 Aftermarket Mikuni carb bowl-to-body short MOUNTING SCREWS, set of 4:
    $ 5.25

    HCP5483SET13 Aftermarket Mikuni carb bowl-to-body short MOUNTING SCREWS, set of 13:
    $ 12.95


    HCP22613 Aftermarket Mikuni carb bowl-to-body long MOUNTING SCREW, 18-8 stainless steel, smooth polished socket head, hex-drive. Lockwashers should be used with these screws and can be ordered separate below. Use 3 per rack, each:
    $ 1.95

    HCP22613SET3 Aftermarket Mikuni carb bowl-to-body long MOUNTING SCREWS, set of 3:
    $ 5.25




    HCP5484 Aftermarket Mikuni carb bowl-to-body short MOUNTING SCREW, black oxide-coated steel, ribbed socket head, hex-drive. Use 4 per bowl, each:
    $ 1.50

    HCP5484SET4 Aftermarket Mikuni carb bowl-to-body short MOUNTING SCREWS, set of 4:
    $ 4.95

    HCP5484SET13 Aftermarket Mikuni carb bowl-to-body short MOUNTING SCREWS, set of 13:
    $ 9.95


    HCP22614 Aftermarket Mikuni carb bowl-to-body short MOUNTING SCREW, black oxide-coated alloy steel, ribbed socket head, hex-drive. Lockwashers should be used with these screws and can be ordered separate below. Use 3 per rack, each:
    $ 1.75

    HCP22614SET3 Aftermarket Mikuni carb bowl-to-body short MOUNTING SCREWS, set of 3:
    $ 4.95




    For 1984-85 FJ600, XJ650 Turbo, XJ700-X, XJ750-X, all XJ900RK, RL, N/FN, and F models, XJ1100, and all XS1100 models:

    HCP2940 OEM Mikuni carb bowl-to-body MOUNTING SCREWS. These panhead, phillips-drive, alloy steel screws have a dark grey plated finish, and are approximately 2mm longer than stock, each. Use 4 per bowl, each:
    $ 3.50

    HCP2940SET4 OEM Mikuni carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 13.95

    HCP2940SET16 OEM Mikuni carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 49.95



    HCP2643 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREW, zinc-plated alloy steel, panhead, phillips drive, approximately 2mm longer than stock. Use 4 per bowl, each:
    $ 1.75

    HCP2643SET4 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 5.50

    HCP2643SET16 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 18.95



    HCP1358 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREW, with an integral lock washer as original, panhead, phillips drive, gold chromate finish. Use 4 per bowl, each:
    $ 1.95

    HCP1358SET4 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, with lock washers, set of 4:
    $ 6.95

    HCP1358SET16 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, with lock washers, set of 16:
    $ 19.95



    HCP302 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREW, 18-8 stainless steel, panhead, phillips-drive, approximately 2mm longer than stock. Use 4 per bowl, each:
    $ 1.50

    HCP302SET4 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 4.95

    HCP302SET16 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 12.95



    HCP303 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREW, 18-8 stainless-steel, polished button head, hex-drive, approximately 2mm longer than stock. Use 4 per bowl, each:
    $ 1.95

    HCP303SET4 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 5.95

    HCP303SET16 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 14.95



    HCP56 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREW, 18-8 stainless steel, smooth polished socket head, hex-drive, approximately 2mm longer than stock. Use 4 per bowl, each:
    $ 1.95

    HCP56SET4 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 4.95

    HCP56SET16 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 13.95



    HCP58 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREW, black oxide-coated alloy steel, ribbed socket head, hex-drive, approximately 2mm longer than stock. Use 4 per bowl, each:
    $ 1.50

    HCP58SET4 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 4:
    $ 4.95

    HCP58SET16 Aftermarket Mikuni carb bowl-to-body MOUNTING SCREWS, set of 16:
    $ 9.95




    bds3) OEM and aftermarket Mikuni carb bowl-to-body mounting screw LOCK WASHER, available in a variety of styles, materials, and finishes. All Mikuni model carbs (except 1992-98 XJ600 Seca II models) originally used a panhead, phillips-drive bowl mounting screw that had an integral lockwasher. Current OEM and many of the replacement screws do not have the integral lockwasher, and thus a separate lockwasher should be ordered from the selection listed below:


    For XJ550 and 1992-98 XJ600 Seca II models:

    HCP326 OEM carb bowl mounting screw LOCK WASHER, zinc-plated alloy steel, each:
    $ 1.95

    HCP326SET4 OEM carb bowl mounting screw LOCK WASHERS, set of 4:
    $ 7.50

    HCP326SET16 OEM carb bowl mounting screw LOCK WASHERS, set of 16:
    $ 14.95



    HCP922 Aftermarket carb bowl mounting screw LOCK WASHER, zinc-plated alloy steel, each:
    $ 0.95

    HCP922SET4 Aftermarket carb bowl mounting screw LOCK WASHERS, set of 4:
    $ 3.50

    HCP922SET16 Aftermarket carb bowl mounting screw LOCK WASHERS, set of 16:
    $ 7.95



    HCP336 Aftermarket carb bowl mounting screw LOCK WASHER, 18-8 stainless-steel, each:
    $ 0.95

    HCP336SET4 Aftermarket carb bowl mounting screw LOCK WASHERS, set of 4:
    $ 3.50

    HCP336SET16 Aftermarket carb bowl mounting screw LOCK WASHERS, set of 16:
    $ 7.95



    HCP342 Aftermarket carb bowl mounting screw LOCK WASHER, black oxide-coated alloy steel, each:
    $ 0.95

    HCP342SET4 Aftermarket carb bowl mounting screw LOCK WASHERS, set of 4:
    $ 3.25

    HCP342SET16 Aftermarket carb bowl mounting screw LOCK WASHERS, set of 16:
    $ 8.95



    For XJ650 Turbo, XJ700-X, XJ750-X, all XJ900RK, RL, N/FN, and F models, and XJ1100 models:

    HCP55 OEM Mikuni carb bowl-to-body mounting screw LOCK WASHER, zinc-plated alloy steel, each:
    $ 1.95

    HCP55SET4 OEM Mikuni carb bowl-to-body mounting screw LOCK WASHERS, set of 4:
    $ 7.50

    HCP55SET16 OEM Mikuni carb bowl-to-body mounting screw LOCK WASHERS, set of 16:
    $ 14.95



    HCP913 Aftermarket Mikuni carb bowl-to-body mounting screw LOCK WASHER, zinc-plated alloy steel, each:
    $ 1.00

    HCP913SET4 Aftermarket Mikuni carb bowl-to-body mounting screw LOCK WASHERS, set of 4:
    $ 3.75

    HCP913SET16 Aftermarket Mikuni carb bowl-to-body mounting screw LOCK WASHERS, set of 16:
    $ 5.50



    HCP57 Aftermarket Mikuni carb bowl-to-body mounting screw LOCK WASHER, 18-8 stainless steel, each:
    $ 1.00

    HCP57SET4 Aftermarket Mikuni carb bowl-to-body mounting screw LOCK WASHERS, set of 4:
    $ 3.25

    HCP57SET16 Aftermarket Mikuni carb bowl-to-body mounting screw LOCK WASHERS, set of 16:
    $ 7.95



    HCP59 Aftermarket Mikuni carb bowl-to-body mounting screw LOCK WASHER, e black-oxide coated alloy steel, each:
    $ 1.00

    HCP59SET4 Aftermarket Mikuni carb bowl-to-body mounting screw LOCK WASHERS, set of 4:
    $ 2.95

    HCP59SET16 Aftermarket Mikuni carb bowl-to-body mounting screw LOCK WASHERS, set of 16:
    $ 6.95




    MIKUNI CARB BOWL DRAIN SCREWS:

    g5m) OEM and aftermarket Mikuni carb BOWL DRAIN SCREW....the ones that are always such a bear to remove. OEM screws are bright-plated alloy steel with a panhead, phillips-drive design, and come in both the version WITH the o-ring under the screw head (all XJ550, XJ650 Turbo, all XJ900RK, RL, N/FN, and F models, and XJ1100 models) and the style WITHOUT the o-ring under the screw head (all XJ700-X and XJ750-X models).

    NOTE: If you plan on using the HCP865 screws WITHOUT any o-rings, we VERY STRONGLY suggest you use the HCP4399 drain screws instead, and here's why: for whatever reason that Mikuni/Yamaha decided to use the o-rings on these bowl drain screws, the fact is that in order to make the o-ring land or "groove" (where the o-ring sits), they turned down the shaft of the screw by almost 2mm total, thus turning an M6 sized screw (that's the nominal size of both the HCP865 and the HCP4399 drain screws) into an M4 sized screw......kind of a "chain only as strong as its weakest link" kinda thing......since the "skinniest" part of the HCP865 screw shaft is now just a hair over 4mm diameter, and in effect this is now a M4 (4mm diameter shaft) screw.

    Since these screws tend to get stuck in the bowls after a few years of non-use, I believe what Yamaha discovered very quickly was that these o-ringed type screws---the HCP865's with an "in reality" size of just M4---were getting stuck and shearing off right at that "weakest link" portion of the shaft....the o-ring land.....and that is why they did away with the o-ring land on the later model versions of the Mikuni carbs, and started using an unmodified version of the same screw (which is the HCP4399 screw), which is a "true" M6 screw.

    In fact, the HCP865 screw and the HCP4399 screw are identical, it's just that the HCP4399 screw is not machined for a ring land.

    Aftermarket socket head cap screws are an improved "never-get-stuck-again" version that are made as an 18-8 stainless steel allen head (a/k/a hex-drive socket head cap). This style works much better than the original Yamaha screw; not only is it made of stainless steel, but the larger allen-head design allows for more torque to be applied to the screw, forever ending the stripped/stuck/ruined drain screw problem that has plagued Yamaha owners forever! Note that by their design, the large allen head portion of this drain screw will be located OUTSIDE of the drain screw bore hole in the bowl, and sticks out about 1/4" from the bowl body.


    And if the threaded port in the float bowl where the drain screw fits been injured, or if you want to restore the threads to their like-new condition, this thread chaser tap is what you'll need:

    HCP6335 Aftermarket THREAD CHASER AND CLEAN-UP TAP, made from a high-speed uncoated steel. For the following holes:
    - all Mikuni carb bowl drain screw hole.
    $ 12.95

    HCP28170 Aftermarket thread tap or EZ-out extractor TAP HANDLE, featuring offset tap handles and fully adjustable head for all m3-m12 size taps and size 0 to ½” extractors. This is the proper way to hold a tap or extractor to insure that the force is directed straight down and doesn’t “wobble” as you are cutting, reaming, or extracting. Much better than using pliers or vise-grips to hold the tool……..
    $ 17.95


    NOTE: it is recommended that anti-seize compound be used on the screw threads when fitting screws back into the carb bowl passage.



    Mikuni carb bowl drain screws:

    HCP865 OEM Mikuni carb BOWL DRAIN SCREW, bright plated, alloy steel, panhead, phillips drive drain screw features the machined land just below the head for the acceptance of the HCP4400 o-ring listed below (the o-ring is not included). This style drain screw is used on all XJ550, XJ650 Turbo, all XJ900RK, RL, N/FN, and F models, XJ1100, and all 1981 XS1100 models, although it will also fit all 1984-85 FJ600, 1992-98 XJ600 Seca II, XJ700-X, and XJ750-X models as well (this bikes used a drain screw without an o-ring, but this drain screw is the same size/shape). Is also correct for all of the following models: 1981-83 XS400, 1981 XS650, 1987-88, 1990, and 1995-00 XV535 Virago, 1980-82 SR250, 1981-82 XT250, 1980-82 TT250, 1983 XV500, 1980-81 XT500, 1980-81 SR500, 1982-83 XZ550, 1983-85 XVZ12, 1986-90 XVZ13, 1985-86 and 1989-2007 VMX12 V-Max models. Each:
    $ 10.95

    HCP865SET4 OEM Mikuni carb BOWL DRAIN SCREWS, set of 4:
    $ 34.95


    HCP4400 OEM Mikuni carb bowl drain screw O-RING, for the HCP865 drain screw listed above. Each:
    $ 2.95

    HCP4400SET4 OEM Mikuni carb bowl drain screw O-RINGS, set of 4:
    $ 11.50


    HCP18664 Aftermarket Mikuni carb bowl drain screw O-RING, for the HCP865 drain screw listed above. Each:
    $ 2.50

    HCP18664SET4 Aftermarket Mikuni carb bowl drain screw O-RINGS, set of 4:
    $ 8.95



    HCP14530 Aftermarket Mikuni carb BOWL DRAIN SCREW, brass, straight-blade drive drain screw features the machined land just below the head for the acceptance of the sealing o-ring (the o-ring is included). This style drain screw is used on all XJ550, XJ650 Turbo, all XJ900RK, RL, N/FN, and F models, XJ1100, and all 1981 XS1100 models, although it will also fit all 1984-85 FJ600, 1992-98 XJ600 Seca II, XJ700-X and XJ750-X models also. Each:
    $ 6.95

    HCP14530SET4 Aftermarket Mikuni carb BOWL DRAIN SCREWS, set of 4:
    $ 24.95



    HCP4399 OEM Mikuni carb BOWL DRAIN SCREW, correct bright plated, alloy steel, panhead, phillips drive drain screw. This style drain screw does NOT use (nor can it accept) an o-ring and is correct for all 1984-85 FJ600, 1986-88 FZ600, 1986-1990 YX600 Radian, 1992-98 XJ600 Seca II, XJ700-X, and XJ750-X models, but can also be used successfully on all XJ550, XJ650 Turbo, all XJ900RK, RL, N/FN, and F models, XJ1100, and all 1981 XS1100 models, each:
    $ 7.95

    HCP4399SET4 OEM Mikuni carb BOWL DRAIN SCREWS, set of 4:
    $ 29.95


    HCP16326 Aftermarket Mikuni carb BOWL DRAIN SCREW, brass, straight-blade drive drain screw. This style drain screw does NOT use (nor can it accept) an o-ring and is correct for all 1984-85 FJ600, 1986-88 FZ600, 1986-1990 YX600 Radian, 1992-98 XJ600 Seca II, XJ700-X, and XJ750-X models, but can also be used successfully on all XJ550, FJ600, XJ650 Turbo, all XJ900RK, RL, N/FN, and F models, XJ1100, and all 1981 XS1100 models, each:
    $ 6.95

    HCP16326SET4 Aftermarket Mikuni carb BOWL DRAIN SCREWS, set of 4:
    $ 24.95



    HCP22879 OEM Mikuni carb BOWL DRAIN SCREW GASKET, for use with the bowl drain screw in the center/bottom of the bowl (and not the bowl drain screw that comes in from the side of the bowl as used on some models). Use 1 per bowl on all 1979-80 XS1100 models, and on 1981 XS1100 Standard models. Each:
    $ 2.95

    HCP22879SET4 OEM Mikuni carb BOWL DRAIN SCREW GASKET, set of 4:
    $ 10.95


    HCP10028 Aftermarket Mikuni carb BOWL DRAIN SCREW GASKET, for use with the bowl drain screw in the center/bottom of the bowl (and not the bowl drain screw that comes in from the side of the bowl as used on some models). Use 1 per bowl on all 1979-80 XS1100 models, and on 1981 XS1100 Standard models. Each:
    $ 1.95

    HCP10028SET4 Aftermarket Mikuni carb BOWL DRAIN SCREW GASKET, set of 4:
    $ 6.95




    ds2) Aftermarket Mikuni carb BOWL DRAIN SCREW. Bright finish 18-8 stainless steel socker head, hex-drive, taper-point screw fits into the drain hole passage of each carb bowl. Works better than the original Yamaha screw; not only is it made of stainless steel, but the larger socket-head design allows for more torque to be applied to the screw, forever ending the stripped/stuck/ruined drain screw problem that has plagued Yamaha owners forever!

    Fits all XJ550, 1984-85 FJ600, 1986-88 FZ600, 1986-1990 YX600 Radian, 1992-98 XJ600 Seca II, XJ700-X, XJ750-X, all XJ900 models, XJ1100, and all 1981 XS1100 carb bowls. The original drain screws on those all models (except the 1984-85 FJ600, 1992-98 XJ600 Seca II, XJ700-X, and XJ750-X) had an integral o-ring, which is not present on this replacement style screw. But the lack of the o-ring on this replacement screw presents absolutely no fit or sealing/leakage issues on those models originally equipped with a bowl drain screw that used an o-ring.

    Note that by their design, the large socket head portion of this drain screw will be located OUTSIDE of the drain screw bore hole in the bowl, and sticks out about 1/8" from the bowl body. This additional length does not cause any problems, and after looking at them (installed) on the carb bowls, at first glance they might look "odd" the way the stick out, but after the third or fourth look, they appear normal and oddly interesting with that extended length.

    NOTE: do NOT "bottom" the heads of these screws against the bowl! Tighten them to 4-5 foot-pounds of torque, just enough to seat them snugly. That is all that is necessary to prevent fuel leakage from the drain port.

    NOTE: on some models, you may have to file away a tiny amount of metal on the outside of the bowl to obtain enough clearance for the head of the screw to clear and seat itself deep enough to fully cut off fuel flow thru the drain port.

    It is recommended that anti-seize compound be used on the screw threads when fitting them into the carb bowl passage.


    HCP8879 Aftermarket Mikuni socket head, hex-drive, 18-8 stainless-steel carb BOWL DRAIN SCREW, each:
    $ 9.95

    HCP8879SET4 Aftermarket Mikuni carb BOWL DRAIN SCREWS, set of 4:
    $ 34.95



    NOTE: good used carb bodies and float bowls are also available, please inquire.
     
    Last edited: Sep 16, 2021
  13. chacal

    chacal Moderator Moderator Supporting Vendor Premium Member

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    SECTION C:

    FUEL SYSTEM ITEMS: Including Airbox, Carbs, Intakes, Fuel Tanks, Sending Units, Petcocks, Gas Caps, Tank Mounts, Etc.

    --General Fuel System Tools & Parts



    FUEL SYSTEM TOOLS:

    CARB TOOLS:

    NOTE: SOME OF THE FOLLOWING TOOLS ARE AVAILABLE FOR RENTAL!!: some tools are a one-time or infrequent use tool, so it may be more economical for you to rent them from us, rather than to purchase outright. Please see the “rental” section within the THE TOOLBOX section of our catalog at:

    http://xjbikes.com/forums/index.php?threads/xj-parts-catalog-section-p-the-toolbox.44630

    and review the availability and procedures in the TOOL RENTAL section.


    Carb Chemicals:

    xx1) Fastener ANTI-SEIZE PASTE. Yeah, it's smelly and makes a slippery mess on your fingers, but this stuff is a life-saver for any true wrencher, because it prevents problems down the road. Use it on any metal fastener that does not require a "loctite" thread-locker material to be used. This means on just about every fastener that is carb, engine case, or suspension-related! (except for carb upper and lower rack-mount screws and butterfly valve screws, which do require the use of a thread-lock fluid). If you think that it might, sometime, in the future, need to come off: use anti-seize compound! NOTE: the "base" metal material used in the different anti-seize pastes below do not determine what type of fastener to use such pastes on; it merely signifies what base material is used to create the anti-seize paste. You can use any "base-metal" anti-seize paste on any type of fastener and metal.

    NOTE: the use of anti-seize compounds will result in a TORQUE-MULTIPLYING EFFECT……..the result of a reduction in friction between the threaded contact points……and thus fasteners treated with anti-seize compound should have their torque values reduced by at least 10-15% when installed into steel material, and up to 25% into aluminum materials or other “soft” metals” (such as spark plugs into cylinder heads, or almost any other type of fastener into the engine) …… note that this rule applies only to service manual torque specifications on fasteners that are not indicated to be treated with anti-seize fluid by the factory …. if the factory manual specifies the use of an anti-seize coating, then the specified torque value for that fitting already takes into account the “reduced torque” necessary.

    http://raskcycle.com/techtip/webdoc14.html

    http://www.cncexpo.com/MetricBoltTorqueNm.aspx

    http://www.bmwmotorcycletech.info/sparkplugs.htm

    http://www.antiseize.com/pdf/torque_specifications.pdf


    HCP1264 Aftermarket fastener ANTI-SEIZE PASTE, standard grade aluminum-based in a 1-ounce squeeze tube, for smaller jobs.
    $ 5.95

    HCP1265 Aftermarket fastener ANTI-SEIZE PASTE, standard grade aluminum-based formula in a 4-ounce tub with a brush-lid, for larger jobs.
    $ 7.95

    HCP9784 Aftermarket fastener ANTI-SEIZE PASTE, standard grade aluminum-based formula in an 8-ounce tub with a brush-lid, a lifetime supply for your motorcycle!
    $ 12.95

    HCP9763 Aftermarket fastener ANTI-SEIZE PASTE, standard-grade copper-based formula in an 8-ounce tub with a brush-lid, a lifetime supply for your motorcycle!
    $ 12.95

    HCP9764 Aftermarket fastener ANTI-SEIZE PASTE, premium-grade nickel-based formula in an 8-ounce tub with a brush-lid, a lifetime supply for your motorcycle!
    $ 17.95


    NOTE: the following product(s) can only be shipped via ground transport (which thus eliminates the postal Priority Mail, postal Express Mail, or private carrier Expedited levels of service for this item) and cannot (and will not----don't even ask!) be shipped outside of the continental USA. Additionally, there may be a per-package weight or quantity restriction, and thus multiple-unit orders of this product may have to be shipped in separate packages and will incur additional shipping charges.

    HCP20860 Aftermarket industrial-strength ASSEMBLY LUBE, in a standard 12-ounce aerosol can. Heavy-duty formula includes graphite to not only enhance and speed up the penetrant action, but also gets down into the pores of the metal for the greatest possible lubrication possible. Won't wash away, protect against rust and corrosion, stable from 0-degrees up to 250-F. This fluid is also a great choice for use as a drive cable lubricant.
    $ 21.95

    HCP20862 Aftermarket super-duty ASSEMBLY LUBE, in a generous 10-ounce aerosol can. The cat's-meow of lubricants, infused with pure moly disulfide, it goes on wet and then dries in 1-2 hours to a super-slick, high-pressure, hi-temp, bearing-like finish which provides the ultimate level of protection. Prevents rust and corrosion, won't wash off, throw off, and won't attract dust or dirt. Surfaces must be clean and dry of previous oils, etc. before application. Can even be used as an engine, tranny, and drivetrain assembly lube!
    $ 24.95

    HCP20863 Aftermarket super-duty GRAPHITE LUBE, in a generous 10-ounce aerosol can. The 800-pound gorilla of lubricants, it's infused with pure graphite, goes on wet, and then dries in 10 minutes to a super-slick, high-pressure, bearing-like finish which provides the ultimate level of protection. Prevents rust, won't wash off, throw off, and won't attract dust or dirt. Surfaces must be clean and dry of previous oils, etc. before application. Can be used as an engine assembly lube, bearing or bushing pre-lube, great for lock cylinders, and all metallic sliding surfaces. Use where dusty or dirty conditions render oil-based lubricants ineffective or undesirable.
    $ 21.95




    xx2) The next most important tool: fastener THREAD LOCKER FLUIDS. Use on any fastener that you don't normally ever remove, to make sure that it stays that way. Comes in a variety of formulas, each one designed for a specific use as explained below.

    HCP1266 Low Strength THREAD LOCKER FLUID, 6ml squeeze tube. This is a semi-permanent formula that provides moderate vibration-loosening resistance, while still allowing for easy disassembly of the fastener with hand tools. This formula is recommended for upper and lower carb rack mount screws and the butterfly valve-to-throttle shaft retaining screws. A little bit goes a long way.......
    $ 11.95


    HCP1267 Semi-Permanent THREAD LOCKER FLUID, 6ml squeeze tube. This is semi-permanent formula that provides good vibration-loosening resistance, while still allowing for easy disassembly of the fastener with hand tools. This formula is recommended for use with 6-20mm fasteners.
    $ 11.95

    HCP27756 Semi-Permanent THREAD LOCKER FLUID, 0.5ml squeeze tube. This is semi-permanent formula that provides good vibration-loosening resistance, while still allowing for easy disassembly of the fastener with hand tools. This formula is recommended for use with 6-20mm fasteners. Small single-use tube is great for, well, small jobs!
    $ 3.95


    HCP1268 Permanent THREAD LOCKER FLUID, 6ml squeeze tube. This is a high-strength formula that provides superior vibration-loosening resistance, and requires the use of heat or special tools to break loose the fastener for disassembly.
    $ 11.95

    HCP1269 Permanent THREAD LOCKER FLUID, 6ml squeeze tube. This is both a high-strength AND high-heat formula that provides superior vibration-loosening resistance, and requires the use of heat or special tools to break loose the fastener for disassembly.
    $ 11.95




    b4) Aftermarket pure SILICONE GREASE----this is the proper product to use when installing any rubber-based o-ring or seal or paper gasket. Silicone doesn't affect rubber, provides good seal lubrication, can also be used as a "glue" to hold gaskets and seals in place during installation, and to aid in the re-assembly of components.

    HCP28407 Aftermarket o-ring, oil seal, and gasket installation pure SILICONE GREASE. This small 5-gram (1/6-oz) snap-open "pillow packet" is enough for a few small oil seals, dozens of o-rings, and the like. Each:
    $ 4.95

    HCP1714 Aftermarket o-ring, oil seal, and gasket installation pure SILICONE GREASE. This generous 14-gram (1/2-oz.) tub goes a long way, because just like Brylcreem, "just a little dab will do ya'!" Each:
    $ 9.95



    NOTE: the following product(s) can only be shipped via ground transport (which thus eliminates the postal Priority Mail, postal Express Mail, or private carrier Expedited levels of service for this item) and cannot (and will not----don't even ask!) be shipped outside of the continental USA. Additionally, there may be a per-package weight or quantity restriction, and thus multiple-unit orders of this product may have to be shipped in separate packages and will incur additional shipping charges.

    HCP20861 Aftermarket industrial-strength SILICONE LUBE, in a large 16-ounce aerosol can. Concentrated silicone sprays on wet, and then dries to a super-slick, clear, non-greasy, non-staining finish. Resists moisture, stops squeeks, prevents binding on all types of surfaces (wood, metal, plastic, rubber, even fabrics). Won't wash away, protect against rust and corrosion, stable from -100 degrees up to 500-F. This fluid is also a great choice for use as installation lubricant for o-rings, oil seals, etc. (similar to our HCP1714 or HCP28407 silicone grease paste) or wherever petroleum-based lubricants are not recommended.
    $ 24.95




    HCP20849 Aftermarket fuel system FLUSH AND STABILIZER TREATMENT, the use of approximately 1 ounce per gallon of fuel --- added to the gas --- helps to loosen up accumulated crud and debris inside the petcock and the carbs, and thus allows it to be dissolved and run thru the engine. It also acts as a fuel stabilizer to prevent fuel breakdown and varnish formation......will stabilize fuel for up to two years. Using it during your "winterizing" procedure will help prevent the dreaded clogged-carbs syndrome when you go to start up your bike when springs rolls around. NOTE: the recommended dosage of 1 ounce per gallon will require a different amount per bike model, since all XJ's have different sized tanks. Do not follow the "more-is-better" philosophy when using this product! It is not unusual for the engine to produce a whitish-colored exhaust while this additive is being combusted.

    By the way, the best fuel stabilizer to use, if you can easily find it, is race gas…..expensive, but it works:

    http://www.motorcycleproject.com/text/gasoline.html


    Tank capacities for reference:
    XJ550 Maxim: 16.6 liters (4.4 gallons) total; main supply is 13.0 liters (3.4 gallons), and 3.6 liters (1.0 gallon) reserve.
    XJ550 Seca: 19.5 liters (5.1 gallons) total; main supply is 16.0 liters (4.2 gallons), and 3.5 liters (0.9 gallons) reserve.
    XJ650 Maxim/Midnight Maxim: 16.6 liters (4.4 gallons) total; main supply is 13.0 liters (3.4 gallons), and 3.6 liters (1.0 gallon) reserve.
    XJ650RJ Seca: 23.3 liters (6.2 gallons) total; main supply is 19.5 liters (5.2 gallons), and 3.8 liters (1.0 gallon) reserve.
    XJ650 Euro: 21.7 liters (4.7 gallons) total; main supply is 19.5 liters (4.1 gallons), and 2.2 liters (0.6 gallons) reserve.
    XJ650 Turbo (1982): 18.5 liters (4.2 gallons) total; main supply is 15.5 liters (3.4 gallons) total, and 3.0 liters (0.8 gallons) reserve.
    XJ650 Turbo (1983): 19.0 liters (5.0 gallons) total; main supply is 16.0 liters (4.2 gallons), and 3.0 liters (0.8 gallons) is reserve.
    XJ700 all: 16.0 liters (4.2 gallons) total; main supply is 13.0 liters (3.4 gallons), and 3.0 liters (0.8 gallons) is reserve.
    XJ750 Seca (1981-83): 23.1 liters (6.1 gallons) total; main supply is 19.0 liters (5.0 gallons), and 4.1 liters (1.1 gallons) is reserve.
    XJ750 Seca (1984): 27.0 liters (7.1 gallons) total; main supply is 22.0 liters (5.8 gallons), and 5.0 L (1.3 gallons) is reserve.
    XJ750 Maxim/Midnight Maxim: 21.1 liters (5.6 gallons) total; main supply is 17.0 liters (4.5 gallons), and 4.1 liters (1.1 gallons) is reserve.
    XJ750-X: 16.0 liters (4.2 gallons) total; main supply is 13.0 liters (3.4 gallons), and 3.0 liters (0.8 gallons) is reserve.
    XJ900: 27.0 liters (7.1 gallons) total; main supply is 22.0 liters (5.8 gallons), and 5.0 L (1.3 gallons) is reserve.
    XJ1100: 23.1 liters (6.1 gallons) total; main supply is 19.0 liters (5.0 gallons), and 4.1 liters (1.1 gallons) is reserve.

    16-ounce can is the right size to accommodate 2 complete engine flush procedures.
    $ 23.95




    NOTE: the following product(s) can only be shipped via ground transport (which thus eliminates the postal Priority Mail, postal Express Mail, or private carrier Expedited levels of service for this item) and cannot (and will not----don't even ask!) be shipped outside of the continental USA. Additionally, there may be a per-package weight or quantity restriction, and thus multiple-unit orders of this product may have to be shipped in separate packages and will incur additional shipping charges.

    HCP8540 Aftermarket carb diaphram rubber RnR FLUID. Dissolved and chlorinated paraffin wax is the best (and perhaps the only) way to safely bring some life back into stiff, worn rubber material... such as that found in those all-important carb piston diaphragms. Years of hard life inside of your carb take their toll, and whenever your carb is apart for service, and generous application of this product will help to clean, maintain, and restore the flexibility, while prolonging their usable service life. 10cc dripper bottle contains enough fluid to do about eight diaphragms. Simple to use, spread on, wait a few minutes, wipe off, repeat and you're done!
    $ 9.95




    Rust Removal and Prevention Fluids:

    rr4) Concentrated RUST REMOVER magically dissolves rust on all iron-based metals. Spray or wipe directly onto rusty parts, or immerse the items in a container full of this solution (diluted), let it work, then rinse off. Highly concentrated, easy to use, leaves the metal surfaces grease-free and ready for further processing or finishing. GREAT FOR DE-RUSTING THE INSIDE OF GAS TANKS!

    NOTE: the following product(s) can only be shipped via ground transport (which thus eliminates the postal Priority Mail, postal Express Mail, or private carrier Expedited levels of service for this item) and cannot (and will not----don't even ask!) be shipped outside of the continental USA. Additionally, there may be a per-package weight or quantity restriction, and thus multiple-unit orders of this product may have to be shipped in separate packages and will incur additional shipping charges.


    HCP12358 Aftermarket RUST DESTROYER FLUID, in a 16-ounce plastic bottle. Best to transfer into an old windex spray bottle (etc.) and use with a spray nozzle. After use, it is recommend that the de-rusted parts be immediately painted (or similar) or coated with fogging oil, lubricant, or other surface finish to prevent flash surface-rusting of the newly cleaned parts. Each:
    $ 19.95

    HCP11475 Aftermarket aerosol FOGGING OIL, top end lubricant coats, clings, and protects metal surfaces against rust and prevents ring seizure when an extended period of non-use is expected (winter storage). Spray directly into cylinders (thru the spark plug holes), rotate the engine over a few turns with the starter motor (but with plugs still removed-----do not allow the engine to start!) to spread the oil about, and your pistons, cylinders, rings will live happily ever after...............or, at least until you start up the engine next spring! 12-ounce can will fog many a cylinder, exhaust system component, fuel tank, etc.
    $ 14.95


    Here are a few other good ways to de-rust metal products:

    - soak iron (steel) parts in heated vinegar (doesn’t matter what kind) overnight, then rinse with clean water. and finally spray with fogging oil (or similar) to prevent rust from re-forming.

    http://www.mopedarmy.com/wiki/Removing_rust_from_a_gas_tank

    http://users.eastlink.ca/~pspencer/nsaeta/electrolysis.html

    http://www.moreg.org.au/dissolving_rust.htm

    http://www.htpaa.org.au/article-electro.php

    http://xjbikes.com/forums/index.php?threads/32838

    http://xjbikes.com/forums/index.php...val-no-frills-easiest-fastest-cheapest.48196/

    http://www.robertscycle.com/chrome-clean.html

    http://www.xjbikes.com/forums/threads/teds-2nd-82-xj750-maxim-bobber-project.47929/#post-478002

    http://www.practicalmachinist.com/vb/general-archive/rust-removal-using-molasses-90452/




    Mixture Screw Tool:

    v) IDLE MIXTURE SCREW TOOL is designed for the proper removal and fine adjustment of the idle mixture screw, preventing the destruction of the fragile straight slot head on these screws. An exact-fit blade is set at the end of a 12” long shaft, and the screw driving bit is rotated via a handle on the end of tool....this design not only eliminates stripping out the idle mixture screw slot, but also allows for very fine adjustment of the screw when fine-tuning the carbs (when using a colortune plug, etc.). The long horizontal shaft allows you to easily reach the center carbs from the outside of the carb bank, no need to lift the tank to access them. A knurled section on the shaft provides for a positive grip. A very neat little tool and it'll last a lifetime or two. Fits: all XJ550 all, all XJ650, all XJ700, all XJ750, all XJ900, XJ1100, and all 1980-81 XS1100 carbs.

    HCP24870 Aftermarket idle mixture screw REMOVAL AND ADJUSTER TOOL, fits all Hitachi and all Mikuni idle mixture screws.
    $ 27.95



    YICS System Tuning Tools:

    The following two tools are used only in "YICS" ("Yamaha Induction Control System") equipped engines. YICS was used on all XJ550 models, 1982-up XJ650 Maxim and XJ650 Turbo models, all XJ700 air-cooled models, all XJ750 air-cooled models, 1983 XJ900RK, and 1982 XJ1100 models.

    The 1980-81 XJ650 Maxim and Midnight Maxim models, and the 1982 XJ650 Seca (silver paint) models, did NOT use the YICS system.

    - it has also been reported by some owners that some very early model 1982 XJ650 Maxim models did not use the YICS system, either.

    - it has also been noted that very late-year model 1982 XJ650RJC (Canadian model XJ650RJ Seca red-painted models) did use a YICS engine.

    YICS-engine bikes have front lower (oil pump) covers on both sides that have a rectangular "YICS" emblem in them below the cast-in YAMAHA wording. Non-YICS models have the oil pump covers with only the YAMAHA wording (or no wording at all) cast into the cover.

    YICS bikes also use a valve cover that has the word YICS cast into the top surface, while non-YICS models are blank or are cast "YAMAHA" (or "YAMAHA 5VALVE on XJ700-X and XJ750-X models) into the valve cover.


    vv7) Aftermarket YICS CHAMBER PORT BLANKING TOOL---this is the tool you'll need to perform a proper carb synchronization on any YICS motor......without it, you're just wasting time. This block-off tool is used to isolate each cylinder from the others while performing a carb synch. Updated version of the factory #90890-04068-00 tool. Some people claim that this tool is NOT needed to perform a proper synch; we disagree, and so do the Yamaha engineers who designed the YICS system. This quality tool features a snap-open and shut trunnion handle design like the original. This is NOT a cheap home-made tool and has all the proper seals, dimensions, and high-temp insulators as an original factory tool.

    We recommend that you purchase a set of the HCP6380 replacement seals, too, as you'll eventually need to replace them.

    HCP5460 Aftermarket YICS CHAMBER PORT BLANKING TOOL:
    $ 59.95

    HCP6380 Aftermarket insulator SEALS SET for the HCP5460 tool, set of 3 seals.
    $ 8.95



    c5) Yamaha YICS CHAMBER AND PASSAGES CLEAN-OUT TOOLS ---- ---- the YICS chamber runs side-to-side in the back of the cylinder head, and is accessed via a 12mm bolt on either end (this is the same chamber that the HCP5460 synch passage-block-off tool fits into). This chamber has four tiny passages in the top, one for each cylinder. These passages can accumulate soot and other material over time, effectively clogging or reducing their capability to pass the fuel-air mixture through them, and thus compromising their function….take a look for yourself:

    The HCP1410SS bristle wire brush will effectively scrub the length of the passage bore, while the YICS port probe & clean-out tool (HCP1282) has a spear point that can punch through the toughest accumulation of carbon build-up, and has marked notches on the extension rod to indicate exactly how deep into the chamber the tool must be inserted to easily locate the passages. Convenient dowel handle allows for ease of use. A very handle tool to have around! For use on all XJ650 - XJ900 YICS-equipped engines (the HCP1282 port tool is not needed on XJ550 engines and is too short to reach the entire length on XJ1100 engines).


    HCP1282 Aftermarket YICS chamber PASSAGE CLEAN-OUT TOOL:
    $ 19.95

    HCP1410SS Aftermarket STAINLESS STEEL WIRE-BRISTLE CLEANING BRUSH, 11.0mm diameter, perfect size for cleaning out the YICS chamber in the cylinder head of all the built-up baked carbon before using the YICS tool. We recommend the use of an aggressive solvent when cleaning this passage, such as Hoppes #9 gun-cleaning fluid (available at gun shops) or similar. NOTE: this brush is too short to reach into the entire length of the chamber on XJ1100 engines.
    $ 7.95


    NOTE: the YICS chamber bolts do not need to be replaced unless they are missing or otherwise damaged, but the copper crush washer should be replaced periodically to insure a leak-proof. The passage bolt should be torqued to 16 ft-lbs.

    HCP3735 OEM cylinder head YICS passage BOLT, used on all 1981 XJ550 models, 1981 XJ750 Seca, all XJ700 air-cooled engines, and all XJ900 N, FN, and F engines. Fits either side. Each:
    $ 5.95

    HCP3733 OEM cylinder head YICS passage BOLT, used on all 1982-3 XJ550 models, 1982-3 all XJ650 and XJ750 models, all XJ900RK and RL engines, and XJ1100 engines. Fits either side. Each:
    $ 4.95


    HCP3734 OEM cylinder head YICS passage bolt copper CRUSH WASHER, used on all XJ550 models, 1982-3 all XJ650 and XJ750 models, all XJ700 non-X, all XJ900RK, RL, N/FN, and F engines, and XJ1100 engines. Fits either side. Each:
    $ 4.95

    HCP22280 Aftermarket cylinder head YICS passage bolt copper CRUSH WASHER, used on all XJ550 models, 1982-3 all XJ650 and XJ750 models, all XJ700 non-X, all XJ900RK, RL, N/FN, and F engines, and XJ1100 engines. Fits either side. Slightly smaller in diameter and thickness than original crush washer, but fits and performs properly. Each:
    $ 2.95



    Engine Tuning Tools:

    j2) Aftermarket Morgan CARBTUNE PRO 4-COLUMN SYNCH GAUGE TOOL.......brand new, no display box, includes all accessories and instructions. This is the one that professionals use and recommend, and is superior in design, ease of use, and accuracy versus vacuum gauges and all other versions, whether fluid-filled or otherwise. Uses damped stainless steel sliding dowel rods instead of mercury or the "blue mystery fluid", giving accurate, safe, and easy-to-read measurements. More expensive than other synch tools and worth it. Use it even once and you'll wonder how you lived without it.

    NOTE: this tool is used on all XJ engines, regardless of whether it is a "YICS" engine or not, and is necessary to perform the "running" or vacuum synch.

    A FEW WORDS ABOUT “BENCH SYNCHING”:

    If your carbs have been removed from the engine for a rebuild, then it is also suggested that a “bench synch” procedure be performed, which does not require any special tools perform (besides a paper clip or the like)….the only purpose of the bench synch procedure is merely to get the carbs set up “close enough” to allow the engine to start and run, at which time a running (vacuum) synch of the engine should be immediately performed, using the HCP96Q synch gauges, A great visual guide to the bench synch process can be seen at:

    http://xjbikes.com/forums/index.php?threads/6366


    A FEW WORDS ABOUT “VACUUM SYNCHING”:

    If your engine will actually start up and run (even badly), then you don’t need to worry about “pre-setting” any of the synch screws or the butterfly openings; the only purposes of that “bench synching” process is to get the engine in a “close enough in horseshoes or hand grenades” setting to allow the engine to start up. Once you get the engine running, you’ll perform a running or “vacuum synch” by:

    Step 1) synch carb 3 to 4 (using “synch screw No. 4” pictured in the thread below)
    Step 2) then synch carb 1 to 2 (using “synch screw No. 1” pictured in the thread below)
    Step 3) and then synch carbs 1+2 to carbs 3+4 (using “synch screw No. 2” pictured in the thread below)
    Step 4) and you’re done!

    Here’s a pretty good video, and although he doesn’t show you the actual synch screws being adjusted, you can see those in the image on this thread (first picture):

    https://www.youtube.com/watch?v=k7TRKmjrZPQ

    Note that the above thread is all about a non-running (or so-called “”bench synch”), which as I’ve said above, is not necessary if your engine is already capable of running on its own……the non-running "bench-synch" procedure is only necessary to make sure your engine can be started up right after a carb teardown / rebuild (since the butterfly positions may be totally out-of-whack); but once the engine can be started and run under its own power ---- no matter how poorly --- then the running (vacuum) synch is all that’s needed....and note that is is needed, right away, first thing, or woe be unto you.......

    And of course, as part of a regular engine tune-up procedure, the vacuum-synching procedure is a must.

    Remember, vacuum synch is all about getting the same amount of vacuum “pull” on each cylinder, and not about any absolute level / amount of vacuum pull…….that is why on the Carbtune gauge that he's using in the video, he isn’t shooting for any particular “height” of the sliding steel rods, he’s just getting them to the same level (“height”) on the gauge. If using a set of homemade “fluid-bottles” synch tool, you’ll just shoot for the same fluid level in the bottles as you go thru the process (the fluid levels are analogous to the levels of the sliding rods in the Carbtune gauge). Same thought applies if using flickering-needle vacuum gauges….the actual amount of vacuum isn’t important, only that each cylinder ends up drawing the same amount of vacuum as all of the others by the end of the process.


    Please note that Yamaha specifies that the engine synchronization procedure should be performed every 2,500 - 4,000 miles to insure the maximum performance and life-expectancy from your engine.

    Also, please note! you can sometimes find these same sticks selling at a discount at various places, but most of these places are offering a much older, now-discontinued Carbtune II version, rather than the latest, much-improved Carbtune PRO version that is offered here. The PRO version is much more durable, accurate, and easier to clean and service than the older version.



    HCP96Q Aftermarket Morgan CARBTUNE PRO 4-COLUMN SYNCH GAUGE TOOL.
    $ 119.95



    j3) Aftermarket Carbtune Pro STORAGE AND TRANSPORT CASE for the above carbtune pro synch stick......a heavy duty, nicely made zippered and clasp-closure storage case to hold the gauge and all the accessories neatly and safely. You REALLY want to have this to safely store and transport the (somewhat fragile) synch gauges!

    HCP1287 Aftermarket Carbtune Pro STORAGE AND TRANSPORT CASE.
    $ 19.95




    j5) Aftermarket Gunson COLORTUNE TUNING SPARK PLUG KIT....brand new, no display box, includes all accessories and instructions. If you really want to tune your multi-carbs to perfection, you'll have to use this unique "see-through" spark plug that allows you to view the combustion chamber flame color in real-time, thus allowing accurate (rather than guesswork) adjustments to your idle mixture screws. Use it once and you won't believe how you ever got by without it, and will pity those who don't have one of their own. Beware: you'll find that a lot of people now want to be your "friend" and have you come and tune on their bikes, once they find out you have a Colortune!

    Also, please note! you can find quite a few of these plugs at a discount at various places, but most of these places are selling an older, now-discontinued "automotive" version of the Gunson colortune plug. While there are no fitment differences between the automotive and "motorcycle" versions of these plugs, just be aware that the automotive versions were designed to be used in a water-cooled engine, and thus have a significantly lower heat tolerance----and if these plugs overheat, the "clear" window either goes cloudy or just simply fractures.

    NOTE: the proper use of the Colortune plug requires you to:

    a) have your valve clearances within spec,
    b) have the engine proper vacuum-synched,
    c) have the YICS chamber blanking tool installed (if it is a YICS engine),
    d) perform a re-synch of the engine after each cylinder is color-tuned. This colortune - synch - colortune - synch etc. iteration is necessary as any adjustments made to each cylinder (as determined by the results of the colortune operation) throws the engine out of synch.
    e) the above procedure is the only way to truly and properly "tune" a multi-carbed engine!


    The following overview video show the Colortune Plug in action:




    going from orange (rich) to blue:

    http://www.youtube.com/watch?v=6hFUvQ4gaPc

    Note in the above video how much easier it is to see the combustion color, especially when looking at the plug “window” from off-center (i.e. looking straight down the centerline of the plug results in the actual spark color “diluting” the combustion color). Also note that it is being filmed in a dark area, making the “neon blue” color easier to observe than when observed in strong light.


    Here’s a good one showing a colortune being hooked up incorrectly (arcing):

    http://www.youtube.com/watch?v=VQ_mZJYIq8I&feature=related



    And here's a super-sized colortune plug, don't try this at home kids!:

    https://www.youtube.com/watch?v=9V9u1KvyM5k

    https://www.youtube.com/watch?v=TVTfNSTR39o



    Another good diagnostic tip: a cylinder running too lean can exhibit a periodic orange flame and sooty plug. If the cylinder is too lean to fire, the fuel accumulates for a couple of cycles, then when it does ignite the total fuel charge is too rich (orange flame) with the resultant unburned hydrocarbon deposits resulting (the sooty plug).

    And here is a helpful tip for XJ700-X and XJ750-X owners:

    - " I had a terrible time trying to get the X color-tuned because there would be an arc to the wall of the cylinder head, and it made reading the color difficult. Because the sight window in the colortune for the X is so narrow, there is less light for you to see, and using the "site tube" with the mirror at the end made it very difficult for me to see clearly what was going on.

    I had a very thin sheet of Teflon that I cut into a 4" x 6" section and after removing the spark plug I curled the 6" section and slid the 4" long tube down inside where the spark plug goes. This Teflon was originally used to prevent high voltage from arcing in a radio amplifier, and I figured it might work for this as well. The Teflon, being white, reflected the light from the glass in the colortune and it was thick enough to prevent any arcing from the colortune extender.

    So the double benefit was to seemingly amplify the amount of light that I could see and to prevent any arcing from happening. I looked on eBay and it seems like there are quite a few pieces of thin Teflon that are very affordable. If arcing is a problem for you with your X, this is probably a good solution for you. This really saves a lot of time with the X engines.:


    Please remember, though, that a Colortune is NOT used to set your carbs at anything other than idle rpm's!!


    NOTE: 10mm plugs are used on all 1992-98 XJ600 Seca II models. 12mm plugs are used on all XJ550, 1984-85 FJ600, XJ700-X, XJ750-X, and XJ900 S/SH models. 14mm plugs are used on all XJ650, XJ700 non-X, XJ750 non-X, XJ900RK, , RL, F, N, and FN models, XJ1100, and all XS1100 models.

    HCP95A Aftermarket Gunson COLORTUNE TUNING SPARK PLUG KIT, for 10mm spark plugs. NOTE: NGK plugs that begin with the letter "C" are 10mm, and are used on all 1992-98 XJ600 Seca II models.
    $ 89.95

    HCP95B Aftermarket Gunson COLORTUNE TUNING SPARK PLUG KIT, for 12mm plugs. NOTE: NGK plugs that begin with the letter "D" are 12mm, and are used on all XJ550, 1984-85 FJ600, XJ700-X, XJ750-X, and XJ900 S/SH models. And due to the depth of the spark plug well on the water-cooled engines, it can be a challenging experience to install and remove the Colortune plug on those engines......
    $ 109.95

    HCP95C Aftermarket Gunson COLORTUNE TUNING SPARK PLUG KIT, for 14mm spark plugs. NOTE: NGK plugs that begin with the letter "B" are 14mm, and are used on all XJ650, XJ700 non-X, XJ750 non-X, XJ900RK, RL, F, N, and FN models, XJ1100, and all XS1100 models.
    $ 129.95



    j5a) Aftermarket Colortune SPARK PLUG ONLY (with its copper sealing washer). Available for those who wish to have more than one plug available for use without having to buy another complete set. NOTE: all the accessory pieces used with the HCP95A-B-C kits (listed above).....including the short plastic "socket", the long extension tube/socket, the viewing tube, and the high-tension wire lead.....are the same between all sets.

    HCP2751W Aftermarket Colortune SPARK PLUG ONLY (with copper washer), 10mm.
    $ 88.95

    HCP2752W Aftermarket Colortune SPARK PLUG ONLY (with copper washer), 12mm.
    $ 108.95

    HCP2753W Aftermarket Colortune SPARK PLUG ONLY (with copper washer), 14mm.
    $ 128.95



    j5c) Aftermarket Colortune spark plug WASHER ONLY……for those who have lost the special sealing washer used with the colortune plug, we offer these replacements:.

    HCP2758-10A Aftermarket Colortune spark plug COPPER WASHER ONLY, for 10mm plug.
    $ 17.95

    HCP2758-12B Aftermarket Colortune spark plug COPPER WASHER ONLY, for 12mm plug.
    $ 17.95

    HCP2758-14C Aftermarket Colortune spark plug COPPER WASHER ONLY, for 14mm plug.
    $ 17.95




    j5b) Aftermarket Colortune Spark Plug 14mm-to-12mm ADAPTER. Available for those who have bikes than use both 12mm and 14mm plugs, but only want to buy one Colortune Plug and use it on both engines. This adapter allows the use of a 14mm plug in a 12mm spark plug hole. NOTE: not for use on cylinders under 180cc displacement (720cc or smaller on a 4-cylinder motor) as the extra volume that this adapter increases the combustion chamber volume, which in turn decreases the effective compression ratio of the engine---thus resulting in an unreliable reading from the plug. Only really useful for XJ750-X owners, as they are the only XJ-series bikes that have 12mm plugs AND have a cylinder displacement greater than 180cc.

    HCP6496 Aftermarket Colortune plug 14mm-to-12mm ADAPTER.
    $ 29.95




    j77) Aftermarket carb tuning and synchronization AUXILIARY FUEL TANK. This handy plastic mini-tank allows you to conveniently and safely store the small amount of fuel you'll need when operating the engine when the main fuel tank is removed....such as during synch procedures and colortuning efforts. Tank comes with hanger wire, 4' of the proper 1/4" fuel hose, and an in-line on-off valve.

    HCP159 Aftermarket plastic AUXILIARY FUEL TANK, half-gallon capacity. Gravity feed design, not suitable for fuel-injected bikes, but perfect for all XJ models. Includes plastic tank with lid, hanger bracket, fuel line, and an on-off control valve. XJ1100 models will have to use a fuel "T-fitting" to split the outlet hose to the two carb fuel inlet. This is a high-quality, shop-grade tank, not some flimsy chain-store product!
    $ 59.95




    af12) OEM and aftermarket carb fuel bowl FLOAT HEIGHT and FUEL LEVEL GAUGES......let's face it, setting the float level heights on carbs is a real pain in the butt (and that's being as nice as I can be about it!). You normally have to take the carbs on-and-off the bike two or three times to get the settings right, rig up some special leveling fixtures, etc. etc. If you've done it before, you know what I mean. These special tools can help lessen this nightmare (but not eliminate it, sorry!).

    Yamaha service manuals define the float-height be set via the "clear tube" method, whereby you install a clear piece of tubing into the carb bowl drain outlet, open the drain screw, and then hold the tube upwards against the edge of the carb bowl and see how high up the fuel rises in the tube, and then compare this level to a specified distance below the carb bowl-carb body interface.

    A simplified "shortcut" method is to set one of the floats correctly (as measured by the fuel level), and then measure the "height" of the float off of the carb base. Using this known "correct" float height measurement, you can then set the remaining three carb float heights using that once correct measurement, and then using the clear-tube measure to simply check the results (and tweak as is necessary to get all the fuel levels as close a possible to each other).

    Setting your fuel levels correctly is important to having your engine operate correctly. The fuel levels in the bowls have a direct effect on the air-fuel mixture ratio ("rich" or "lean") of each carb, and thus both the accuracy and the equality of those levels between the different carbs should be adjusted with care.

    These gauges will allow you to do just that.

    Here's the Holy Grail on this subject:

    http://www.xj4ever.com/setting fuel levels.pdf

    And here’s a good visual guide to some problems that you might run into:

    http://www.xjbikes.com/forums/threads/setting-the-floats-mikuni-not-gettin-any-readings-fixed.40395

    and here’s a wonderful video from TurpentyneTV that shows the whole process in excruciating detail:

    https://www.youtube.com/watch?v=V8yu-WjcglY



    Fuel Level Cheat Sheet:

    Here's the proper fuel-level settings by model when using the "clear-tube" method of measurement:


    Hitachi all HSC32 series models:

    NOTE: all of the following models used HSC32 carbs:
    XJ650 Maxim, Midnight Maxim, XJ650RJ Seca (non-turbo), XJ650 Euro all use HSC32 carbs (various versions)
    XJ750 all USA 1981-83 models use HSC32 version 5G200 (Seca) and 15R00 (Maxim and Midnight Maxim)
    XJ750 all Canadian 1981-83 models use HSC32 version 5H200 (Seca) and 15T00 (Maxim and Midnight Maxim)
    XJ750 UK/Europe 11M models, XJ750 Police models 24L and 37H use HSC32 version 5N100

    -Fuel level measured via the clear-tube gauge: 3mm +/- 1mm (.12 +/- .04 inches)

    -Float height: 17.5 +/- 0.5mm


    Hitachi HSC33 series (XJ700 air-cooled models):

    -Fuel level measured via the clear-tube gauge: 1.0mm +/- 1mm (.039" +/- .039")

    -Float height: 16.0 +/- 1.0mm


    Hitachi HSC33 series (XJ750E-II model):

    -Fuel level measured via the clear-tube gauge: 5.0mm +/- 1mm (.197" +/- .039")

    -Float height: unknown


    Hitachi HSC33 series (XJ750RL models):

    -Fuel level measured via the clear-tube gauge: 1.0mm +/- 1mm (.039" +/- .039")

    -Float height: unknown, but possibly the same as XJ700 air-cooled models (16.0 +/- 1.0mm)


    Mikuni BS28 (all XJ550 except 1984 XJ550L):

    -Fuel level measured via the clear-tube gauge: 2mm +/- 1mm (.08 +/- .039 inches)

    -Float height: 21.5 +/- 1.0mm


    Mikuni BDS26 (USA all 1992-98 XJ600 Seca II):

    -Fuel level measured via the clear-tube gauge:
    USA: 4 - 6mm (.016 - 0.24”) below float chamber line

    -Float height: 6.2 - 8.2mm (0.24 - 0.32”)


    Mikuni BDST28 (non-USA all 1992-98 XJ600 Seca II):

    -Fuel level measured via the clear-tube gauge:
    1992-96 Canada and Australia: 3 - 5mm (0.12 - .0.20”) above float chamber line
    1992-95 UK: 3 - 5mm (0.12 - .0.20”) above float chamber line
    1996-98 UK: 8.5 - 9.5mm (0.34 - .0.37”) above float chamber line

    -Float height:
    1992-96 Canada and Australia: 11 - 13mm (0.43 - 0.512”)
    1992-95 UK: 11 - 13mm (0.43 - 0.51”)
    1996-98 UK: 8.8 - 10.8mm (0.35 - 0.42”)


    Mikuni BS32 (all XJ550L, 1984-85 FJ600, and 1984-87 / 1989-91 XJ600):

    -Fuel level measured via the clear-tube gauge: 3mm +/- 1mm (.12 +/- .04 inches)

    -Float height: unknown


    Mikuni BS30 (all XJ650 Turbo):

    -Fuel level measured via the clear-tube gauge: 2mm +/- 1mm (.08 +/- .04 inches)

    -Float height: 17.5 +/- 0.5mm


    Mikuni BS33 (all XJ700-X and XJ750-X):

    -Fuel level measured via the clear-tube gauge: 3mm +/- 1mm (.12 +/- .04 inches)

    -Float height: 17.5 +/- 1.0mm


    Mikuni BS35 (all XJ900RK/RL):

    -Fuel level measured via the clear-tube gauge: 5mm +/- 1mm (.20 +/- .04 inches)

    -Float height: 22.3 +/- 0.5mm


    Mikuni BS36 (all XJ900F, FN, N, etc):

    -Fuel level measured via the clear-tube gauge: 5mm +/- 1mm (.20 +/- .04 inches)

    -Float height: 22.3 +/- 0.5mm


    Mikuni BS34 (all XJ1100 and XS1100):

    -Fuel level measured via the clear-tube gauge: 3mm +/- 1mm (.12 +/- .04 inches)

    -Float height:
    25.7 +/- 1.0mm (1978-79 all models)
    23.0 +/- 0.5mm (1980 all models)
    not specified (1981-82 all models)



    Float Height Measurement Tools:

    HCP9798 We offer this inexpensive FLOAT HEIGHT RULER that comes with a sliding "pocket clip" (which doubles as a fixed position pointer), allowing you to duplicate your float setting measurements from one carb to the next. Ultra-thin and only a 1/4" wide, this 150mm (6") measuring stainless steel ruler has black etched rulings and is a valuable addition to your carb tool arsenal.
    $ 8.95

    HCP4 Professional quality sliding-arm FLOAT HEIGHT GAUGE is specifically designed for measuring float heights and features a sliding arm that allows you to accurately measure the distance from the carb body base to any point on the float itself (normally to the top or bottom edge of the float, when the needle is in its "just-barely-closed" position) and then apply this exact same setting to the other carbs. A great time saver for this technically simple, but very time-consuming task.
    $ 29.95




    Fuel Level Measurement Tools:

    NOTE: Hitachi and Mikuni carbs use the same "clear tube gauge" to check the fuel level within their bowls, but all Hitachi (and XJ600 Seca II, XJ1100, and all XS1100 Mikuni) carbs feature a cast bowl drain nipple port that also acts as a receiver to the fuel level gauge......just plug-and-play (well, depends on what your definition of "play" is, but you get the picture..........). A great image of the proper use of this clear-tube "gauge" can be seen at:

    http://www.xj4ever.com/setting fuel levels.pdf

    and see page 8.

    Note that the factory-recommended method is properly shown above; the tube should be wrapped around to the side of the outer carb, and "centered" front-to-back along the body.


    All other Mikuni carb float bowls do not have the cast-in bowl drain nipple port, and thus the "clear tube" has nothing to attach to. Yamaha provided a separate, brass TUBE ADAPTER that could be temporarily inserted and removed from the bowl drain hole on the Mikuni bowls, thus providing an attachment nipple for those models. An aftermarket version of this non-permanent adapter is available as part HCP26218 below, and we also offer a permanent bowl DRAIN NIPPLE for Mikuni carbs that can be easily installed and provided a permanent "nipple" for the bowl drain port, thus making them functionally just like the Hitachi bowls (part HCP8494 below). You will need to use one or the other of these two adapters in order to check fuel levels on Mikuni bowls (except XJ600 Seca II, XJ1100, and XS1100 bowls).



    HCP1592 OEM clear-tube FUEL LEVEL TUBE GAUGE, used to check the fuel level in the bowls when the bowls are installed by attaching the end of the clear tube to the float bowl drain nipple, and then holding the graduated fuel gauge up against the side of the fuel bowl. Black millimeter markings on the measurement tube allow you to easily determine the fuel level with respect to the bowl-to-body reference point. For use on all XJ models with fuel bowl drain nipples (all models with Hitachi carbs and XJ600 Seca II, XJ1100, and XS1100 models with Mikuni carbs, and all other Mikuni carbs using our HCP26218 adapter tool or the HCP8494 drain outlet nipples).
    $ 29.95

    HCP4926x2 Aftermarket clear-tube FUEL LEVEL TUBE GAUGE, used to check the fuel level in the bowls when the bowls are installed by attaching the end of the clear rubber tube to the float bowl drain nipple, and then holding the other end against the side of the fuel bowl. Unlike the original gauge HCP1592 listed above, this is just a clear section of fuel line and does NOT have the upper end with any graduated markings. For use on all XJ models with fuel bowl drain nipples (all models with Hitachi carbs and XJ600 Seca II, XJ1100, and XS1100 models with Mikuni carbs, and all other Mikuni carbs using our HCP26218 adapter tool or the HCP8494 drain outlet nipples).
    $ 9.95



    HCP26218 Aftermarket float bowl FUEL LEVEL TUBE ADAPTER TOOL, for use on all Mikuni carb bowls which do not have a tube nipple cast into the bowl drain output port (note that XJ600 Seca II, XJ1100, and XS1100 models, do have a cast-in bowl drain nipple, and thus do not use (nor need) this product). Unlike Hitachi carbs, Mikuni float bowls do not have a permanent float bowl drain outlet port fitting which the clear tube fuel level gauge can be attached onto; nope, there's just an empty hole there. Yamaha supplied dealership service departments with a special o-ringed brass adapter fitting that pops into this hole, and which could be used during fuel-level checks….moving this (non-permanent) adapter from bowl-to-bowl as the fuel-level checking process proceeded. This reproduction o-ringed aluminum adapter properly duplicates the function of the original (note: for a permanent adapter solution, you can use the HCP8494 bowl drain nipples below).
    $ 11.95


    HCP8494 Aftermarket float bowl DRAIN NIPPLE, for use on all Mikuni carb bowls which do not have a tube nipple cast into the bowl drain output port (note that XJ600 Seca II, XJ1100, and XS1100 models, do have a cast-in bowl drain nipple, and thus do not use (nor need) this product). Unlike Hitachi carbs, Mikuni float bowls do not have a permanent float bowl drain outlet port fitting which the clear tube fuel level gauge can be attached to; no, there's just an empty hole there. The factory had a special o-ringed brass adapter fitting that fit into this hole that would be used during fuel-level checks, but very few people have that adapter and even it is somewhat cumbersome to use. These precisely machined nipples are designed for permanent installation into the Mikuni float bowls----just tap them in place, they are a friction-fit----and them you can slip the fuel-level gauge tube directly onto the protruding end of the fitting. Simple 20-second installation: clean the inside of the drain port in the bowl, use a bit of silicone lube on the adapter, place proper end in drain port, and gently tap in place with a hammer. Once installed, it's leak-free but can still be removed (not easily, but it can!), in case your preferences ever change in the future. Protrudes approximately 1/8" from the drain port, enough to install the clear tube gauge but not enough to interfere with other carb functions. Looks original once installed. Fits Mikuni carbs used on all XJ550 models, XJ650 Turbo, XJ700-X, XJ750-X, and XJ900 models. Use 1 per float bowl. Each:
    $ 9.95

    HCP8494SET4 Aftermarket float bowl DRAIN NIPPLES, for Mikuni carbs, set of 4:
    $ 29.95



    HCP1408SS Aftermarket STAINLESS STEEL WIRE-BRISTLE CLEANING BRUSH, 8.0mm diameter, great for the throttle shaft bore and the emulsion tube bore within the carb body on all Hitachi and Mikuni carbs, and is also the correct size for the float bowl fuel outlet port on Mikuni carbs bowls (except XJ600 Seca II, XJ1100, and XS1100 models). Highly recommended to be used to clean and scour the drain port hole before using either of the above Mikuni bowl adapter fitting or drain nipples.
    $ 5.95



    Carb Rack Service Stand:

    HCP1590-XX Aftermarket CARB SERVICE STAND, heavy-duty steel stand allows you to rotate, pivot, spin, flip, and lift carbs up to a convenient working height. These features, along with a built in level gauge, allow you to service the carbs conveniently and is especially useful for setting your fuel levels properly. Heavy metal base prevents tipping and can be bolted or clamped to a workbench surface. Includes adapters to fit your specific model carbs. You must specify which model bike you are working on so we can provide the correct mounting adapters!
    $ 149.95



    Carb Rack Assembly Alignment Plate:

    j177) Aftermarket carb rack ALIGNMENT PLATE. When you break the individual carbs out of the rack, one of the crucial re-assembly procedures is to make sure that all the carb bodies are in "perfect" alignment with each within the rack. This is critical, as mis-alignment of one carb body to another will result in different throttle valve opening positions between differing (adjacent) carbs that no amount of synch screw adjusting will ever remedy.

    As you start installing the screws into the individual carb bodies (mounting them into the upper and lower carb rack bracket bars), the carb bodies will try to twist and "walk" from each other due to the torsional forces being applied to the screws and the precise alignment of the screw mounting holes.

    Yamaha specifies the use of a flat piece of plate glass to perform this procedure.....the idea being, if you set the carb throats down against a perfectly flat surface, you can apply downward pressure onto the carb bodies to insure that the throats stay perfectly flat against the glass plate during re-assembly and tightening of the rack bracket screws, insuring accurate c