Newly Licensed -First Bike

Will for sure mention it to him! Thanks again, you guys are awesome

 

you should just drain the gas and replace with new gas

 

This is why I said in my reply to your post, Suggestion: scour this forum and learn about all the RIGHT ways to maintain your maxim. I did exactly as you did when I bought mine, took the word of the previous owner - who claimed plenty of maintenance was done to it - and rode it around before any serious work. I was lucky that it was actually in decent shape, but still needed TLC.

See my noob story here: https://www.xjbikes.com/forums/threads/my-xj-story-since-it-may-help-another-noobie.33995/

I had seen other posts about the gas-in-oil issue being due to left on prime, but its not the only cause. In my case, running it unstuck the floats, and I didn't get into full-throttle carb maintenance until after riding it some. But once I did all the due diligence - carb cleaning, valve clearance, fuse box replacement, wheel bearings, and then some - I easily doubled the horsepower, response, and handling. Plus, made it a sh**load more reliable.

 

Can someone point me to carb rebuild kits? I looked at the xj4ever whatever but couldn't find them on there. Can someone copy and paste that section so I can see the price and stuff...which I presume is in America dollars? I have fuel leaking out of my petcock. I was so proud of myself...I changed the oil, oil filter and cleaned the air filter (kn oil filter, resprayed and all that) but yeah. I need to rebuild the carbs and potentially replace the petcock. I'm proud I did it myself, but I don't have a garage and rebuilding the the carbs are way out of my league (just learned how to use a ratchet lol)..so gonna buy the parts and get someone to do it for me. Little disheartening

 

he list them in this link. first is individual parts then his 2 levels of complete kits
https://www.xjbikes.com/forums/threads/xj-parts-catalog-section-c-fuel-system.44642/

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:

his delux complete kits have upgraded parts

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:

then partial kits

 

if you go directly to his web site there is an email address
www.xj4ever.com

or just start a conversation with member chacal he is xj4ever

 

Thanks...275 usd huh. Wow plus shipping I'm sure. Bumming hard I appreciate it though. With that part number I found it and took a screenshot

 

you need to dissemble the carbs first then decide what you need. I replace all orings and seals, and any parts that are damaged.
needle valves need replacement most of the time you can just replace needles or the whole body assembly.

while it is nice to just to replace all parts some in that come in the kits are still good.


- 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)

items listed in blue may not be needed unless broken on dissambly.
Items in red may not be needed if you use a fuel filter float valve screens do not need to be replaced or used your original may still be good , springs not rusted

drain screws only if yours are messed up on dissembly
float valve sets, you may want to just replace the float needles.

 

Thanks, that does help a lot!

 

Replace them anyway while you're there.

 

Keep in mind that all the parts needed for a complete rebuild cost about a quarter of what brand new carbs cost.
Rebuilt carbs are more satisfying than making vroom-vroom noises in the garage.

 

Lol yeah, I'd say so k-moe

 

Not saying that there's anything wrong with making vroom vroom noises while sitting on the bike in the garage though...just not quite as much fun

 

don't do dat

 

+1

You run the risk of damaging things.
That also dosen't really test anything.
Use a voltmeter on the battery terminals with the bike running.
Check voltage at idle, at 2000 RPM and above 3200 RPM.

 

+1 on XJ550H's suggestion... you need to disassemble the carbs first then decide what you need. When I pulled and refurbed my carbs, I wanted to get it done quick so I could get to riding, but I was mainly planning to clean and adjust. Once I got into them, they were in okay shape but still needed some parts.