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  1. #1

    Manual needed- and/or a good shop near chicago.. 1992 SL650

    I have a nice SL650- and I rebuilt the carbs, and now it's flooding on the high end. It has moments of its former glory, but then it falls over.

    I don't think its fuel pressure, so I need to see how to adjust the high speed screws... Or, if you know someone near the chain of lakes that likes these, I'll pay for it.

    Thanks

    Jack


  2. #2
    Click avatar for tech links/info, donation request K447's Avatar
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    Welcome

    You can find carb settings and tuning tips in the Tech and FAQ sections, and more useful info via my signature links.

    What else has been done other than the carburetor rebuild?
    Did you use genuine Mikuni rebuild kits?
    Replace the fuel lines?

  3. #3
    Yes, new fuel lines where they were hard. I inspected all the lines, from the pickup on. New plugs. Not Mikuni kits, SPT it think. I didnt' change the needle and seat. On my high speed, it doesn't move like the low speed, it has a limite of about 60degrees, not full turns. Thoughts? Thanks

  4. #4
    bowsniper's Avatar
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    Welcome to the Hulk/ Do your carbs have lil blue caps on the high speed screws? My sl750 did and you had to take them off to adjust the high speed screws. usually the adjustment is only a 1/4 or less with them on. I'm not sure if the 650's had the same.

    Most would agree that using the Geniune Mikuni kit is best for the Polaris skis. great quality with no issues. Just sayin...

    Flooding how?? See it pouring down the carb?..

    Lugs has a shop in chicago near 35st.

  5. #5
    Polarisitis loonatik's Avatar
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    My 93 SL650 has same "limiter caps" on the Hi. I'm sure it's the same for 650, 750 and 780.

  6. #6
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by MrBigBlockDart View Post
    Yes, new fuel lines where they were hard. I inspected all the lines, from the pickup on...
    There are still some original fuel lines in there?

    The carburetors really need to be 100% correct in order for the engine to run properly.

    We have had others use non-genuine Mikuni carb kits and have problems. Did you install SBT carb rebuild kits?

    The plastic limiter caps can be removed from the carb screws. How did you clean out the carbs without removing all the adjustment screws?

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