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  1. #1
    paul c's Avatar
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    about to go through my carbs on 01 gp1200r

    i am going to remove and clean out my carbs which haven't been off in about 7 years. i always used fuel stabilizer over the winters. my ski has some mods done to it. milled factory head to use w/ 92 octane, d-plate, jet works water flow kit, r+d intake grate, riva ride plate and a 13/19 prop (the one thing i really felt a difference with). with this stuff being done what should be done with the carbs as far as jetting and pop off? i never really tinkered with 2 stroke carbs before, should be an issue since i was an auto tech for 15 years. the plugs did show it was running lean, barely a brown tint to them, mostly white. also who would be the best to get the parts from? i need them for a 99 xl1200 also. thanks in advance.


  2. #2

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    For jetting...are you keeping the accelerator pump, or not?

    ???

    Riva is good for parts, or Island Racing.

    - Brian

  3. #3
    paul c's Avatar
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    that i am not sure on. what are the benefits from deleting it or keeping it? i don't live on the water and don't have time for doing constant test and tune. if i lived on the water the motor would have already been apart and modified.

  4. #4
    cigarlust's Avatar
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    Check this out to give you some idea's...

    http://www.mikuni.com/pdf/sbn_manual.pdf


    Don't buy anything from John at Jetski Haven, I bought a rebuild kit for my 44sbn and punched through one of the little rubber grommets on the check valves, he told me they don't sell them seperate... but some how Riva Yamaha has them in stock. He said the only way to fix my problem was buy another rebuild kit or buy the fuel pump assembly which was 60 bucks... hind sight is 20-20

  5. #5
    paul c's Avatar
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    thanks for the heads up. i have bought stuff from island racing before w/o issue. i know it is difficult but i would like a ballpark idea as where to start for jetting and such since it isn't exactly easy to access the carbs.

  6. #6

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    Carbs specs for removing accel pump, but otherwise lightly modded:

    110 Pilots
    120 Mains
    1.5 N/s
    95 Gram Spring

    - Brian

  7. #7
    Moderator beerdart's Avatar
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    http://www.jimmysjetsports.com/servlet/StoreFront

    He is a good guy and in Mass.

    You should go with FA's bag the acc pump. Give me a sec to find the jetting.

  8. #8

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    ...OR...maybe the milled head make a difference.

    I got those specs (above) from here: http://www.greenhulk.net/forums/showthread.php?t=30369 (It's what I used on mine, worked great...but I had a stock head).

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