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What did you do to your Yamaha today?

Discussion in 'XJ Technical Chat' started by Cutlass84, Jun 4, 2007.

  1. Ryengoth

    Ryengoth Active Member Premium Member

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    I ended up going with inline ATM for now. Just wanted to get something functional while I do assembly and testing. I'm still looking for suitable low-profile sockets to rebuild one of the spare OE fuse boxes with. Hoping to put kits together for people to rebuild theirs with (and offer rebuild service).

    The piston kit is from Power House UK. I ordered mine through eBay here in the US. Received it in about a week via Royal Mail. The pistons are OE quality stainless, great finish and fit and the kit was top quality too. If they had included a pair of XL nitrile gloves I could have done a complete rebuild sitting by the mailbox. :D

    http://www.ebaystores.co.uk/Powerho...6835017&_sid=1008591237&_trksid=p4634.c0.m322
     
  2. Jetfixer

    Jetfixer Well-Known Member

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    So Monday I pulled the carbs ,soaked float bowls , the jets for the fuel enrichment were slightly plugged , bikes has been hard to start from cold. Well put carbs back on , since it has been hot a hades outside only took 2 days to reinstall airbox boots , sweat pouring down my face and some ares I won't mention, I can report success. I was happy bowls were spotless been 3 years since I rebuilt carbs .
     
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  3. Uxbridge Brule

    Uxbridge Brule Member

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    Pulled off one down pipe and fixed a leak, will have to take the whole thing off soon and fix the collector box again. Anyone have a link to a home built collector box/exhaust system? Saw one once but can't find it in any search I've tried.
    Oh yeah had a great ride before it got too hot (32°C plus humidity) love this bike between 4500-8500rpm what a sweet sound.
     
  4. WileyRiley

    WileyRiley New Member

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    Perhaps we should create a confession thread for our motorcycle addiction. Just added my third Yamaha to the collection: 1986 Yamaha FJ1200. The others: 1977 XS7502D and 1982 XJ750 Seca. At this point the FJ1200 appears to need minor things (new grips, oil change, etc.) I rebuilt the carbs on the triple last year and the Seca a few years ago. I've recently been trouble shooting what seemed like an electrical issue on the Seca, and just confirmed its a fuel circuit issue - time to open the carbs up again and clean them out. Going back to the "church of clean". Need to order throttle shaft seals as I've been battling a lean issue for a little while.

    Sometimes these old bikes present challenges - challenge accepted!
     
  5. Uxbridge Brule

    Uxbridge Brule Member

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    You have my dream stable of Yamaha's going looking for a Fj1200 when I start work again. Don't tell the wife but that's going to be my happy 501h birthday to me next year.
     
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  6. Timbox

    Timbox Well-Known Member

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    Wonderful how a lot of us tend to do that. As for the FJ1200 make sure you check her for popping out of second gear, hard on the gas in second to test. That will be a great bike, mine went down the rd some time ago.
     
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  7. WileyRiley

    WileyRiley New Member

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    Good call out. Yamaha issued a fix for this problem years ago. The previous owner confirmed having this fix completed at their local dealer. I'll keep an eye/ear on it, that's for sure. Such a strong machine in comparison.
     
  8. Timbox

    Timbox Well-Known Member

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    If I remember working on that bike was kinda fun. Not too hard getting the carbs in and out. Once the tank is out of the way you can really get in there and work. Those little air scoops are interesting how they bring the air in and dump it right on top of the engine. If I remember right it was very comfortable and mine sure like to corner. I wish you many of fun riding miles.
     
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  9. Jetfixer

    Jetfixer Well-Known Member

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    Messed with colortune for a bit ,rode a few miles hot is one thing but this humidity was weird , hop on bike you expect it to be cooler :confused:. So down the road stopped to look at a 79 Yamaha RD400 nice clean 2 stroke , I almost bought one years ago . This one was clean he was asking 5500:rolleyes: yes is good knick but not perfect . Some folks love 2 strokes , since the sun set the humidity is gone and now it is nice :D
     
  10. WileyRiley

    WileyRiley New Member

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    Pulled the carbs off the Seca today. Pretty sure I have a gummed idle circuit on #2 carb. However, it also needs throttle shaft seals and maybe a different valve cover gasket: I've had some blow-by since replacing with an aftermarket valve cover gasket. I've considered applying RTV sealant to permanently resolve this issue.
     
    Last edited: Jul 20, 2019
  11. Pizzaman

    Pizzaman Member

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    Well I wanted to go for a ride. Was doing a little pre ride inspection and noticed front tire was 6 psi low. Spun it around and found a tiny screw. No riding for me this weekend as the tire shop isn't open Sunday or Monday. Tire only has about a 1000 miles on it so that blows. Had a Vespa a few years ago that I put a new tire on and got a screw in it less than 25 miles into it. My luck sucks.
     
  12. XJ550H

    XJ550H Well-Known Member Premium Member

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    they should be able to patch from inside of tire.
     
  13. XJ550H

    XJ550H Well-Known Member Premium Member

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    did you replace the donuts on the bolts that secure the cover? they dry out and do not apply pressure to the cover so you get a leak.
    read the valve adjustment thread and you will see a method to install cover gasket that works well.
    Bigfitz's AIRHEAD VALVE ADJUSTMENT with Pics - parts I & II
     
  14. XJ550H

    XJ550H Well-Known Member Premium Member

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    oil change for the 550 today. I was having issues with oil light coming on. did a seafoam treatment a few days ago for rode 200 miles. issue gone.
    FYI when doing an oil change after draining oil turn key on to check the oil level sensor. the light should come on.
     
  15. XJ550H

    XJ550H Well-Known Member Premium Member

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    Ride faster;). wind chill does not do much above 60 degrees.

    https://en.wikipedia.org/wiki/Heat_index
     
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  16. Deathboner727

    Deathboner727 New Member

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    What size screens go under float needle for xj750 maxim
     
  17. 650MAX

    650MAX Member

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    Many people don't worry about those as long as they have an inline filter. Or so I've heard! Mine were trashed and I left them off. Haven't tried to run it yet but I don't expect any trouble.

    Today I broke my carb rack back down and replaced the throttle shaft seals with pairs of X- and O-rings. Makes a little smaller stack than a pair of O-rings. Also its was still a tiny bit tighter than I'd like so I made a set of thinner thrust washers. Got them all happy snug, not tight.
     
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  18. Colin 85 700

    Colin 85 700 Active Member

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    I allways remove those screens and install an inline or keep yr tank clen and say eff it.
    They are the worst place to plug, have to pull the rack, any sediment that get past a good shape OE in tank filter is so small it should pull thru the carb or settle in the bowl.
    Easier drain yr bowls once in a blue moon to remove sediment than clean those screens.
    (I do it beginning of each every season, petcock on PRI prime, loosen each drain screw in order till fresh smelling and colour fuel flows out each bowl, resets petcock to ON start and ride as normal)
    Note: i fill my tank fresh premium, petcock ON (Off with engine off) for storage. Thats all.
     
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  19. Colin 85 700

    Colin 85 700 Active Member

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    Btw, i rode my bike today... Just cruised a while on the highway for shits n giggles.
    Really enjoyed passing a motorhome pulling a car... 3rd gear passes to the pin... ;)
     
  20. Uxbridge Brule

    Uxbridge Brule Member

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    Put close to 600km(370 miles) on the bike today. Was up to the in laws cottage on the weekend drove the minivan. My daughter's friend forgot her wallet there 3hrs away, so took the bike to go get it today!!Great weather only hit rain for 1/2 hour. Added to the winter to do list... better foam in the seat and hwy pegs.
     

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