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  1. #1

    SXR 800 Minukin carbs...Gap in the throttle at fully closed ?


    i have a question...i got an sxr 800 and it idles very high (2500rp/m)...the idle screw is fully out and the gas cable also..i screw out the "low screw " question is that maybe the throttles has to be fully closed or is this gab normal ?


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  2. #2
    Rodsatheart's Avatar
    Join Date
    Nov 2014
    Arkansas SoCal transplant
    Something is prob. in the linkage somewhere, something is binding up or someone tampered with the throttle blades and they are misaligned.
    Look and see if the idle stop tab is resting on the carb casting. If it is, look at it and see if it is bent. If not, look for something caught in the linkage between the carbs.

  3. #3
    steve45's Avatar
    Join Date
    Feb 2008
    Pretty large gap. Yes, that would make it idle fast.

    If you remove it from the rack, it should close all the way. If not, you'll need to loosen the throttle blade screws and adjust it so it closes all the way. Tighten the screws and carefully stake them on the back side so they don't come out.

  4. #4
    In the middle of the carburetors assembly is a synchronize screw(may have a protective cap, two spring), turn the main carb(carb with Idle screw) all the way down close, then turn the synchronize screw one way or the other until you close the gap in the throttle plates.

    Make sure the carb do not bind when throttle plates close.

    the part mark NA is you synchronize screw.

    Best Regards Tito

  5. #5
    ok thx

    now it run fine, a little little gab is always there but now it idles 1250 +-100 in the water and that is like the manual.

    it smokes a little bit and i have light black spark plugs... i have the folloing jetting

    low speed 1 turn open
    high speed 0,5 turn open
    NS is nothing changed ??OEM ??
    high jet 140
    low jet 80

    stock engine with flame arrestors

    short before the midrange the engine is a little bit "tired". Engine is complete new build up, 175 psi on booth cylinders

    what can i change on the jetting for a little bit more power ind midrange ? Pop off ?

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