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  1. #1

    Question Carb adjusting ?

    Have a 93 GTX 587cc with minkuni 38's. All stock...no jetting or wierd stuff. Trying to adjust the high speed screws. Read in the manual and it says just - - in the boxes for the # of turn outs! I assume that you are not supposed 2 adjust the high speed screws??? Leave them shut off??? Find that hard 2 believe...but I trust experienced people here. Just don't wanna take a chance on running 2 lean. Thanks in advance.


  2. #2
    Tool Bag water worx's Avatar
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    1 1/4 lows

    highs closed or zero turns out.

  3. #3
    It won't burn the pistons or do wierd stuff??? OK Forgive me...I'm just having a tough time envision how that won't happen.

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    Tool Bag water worx's Avatar
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    Seadoo sets most of the carbs so it gets enough fuel from the main jet,so if some numb nut comes along he cant turn the screw & lean it down & burn a piston.

  5. #5
    10-4 Well thank you! I appreciate it! Low speed screws are perfect. I recently rebuilt the carbs...originally set those screws out to 1.25 turns out just like you said and the manual, but never messed with them. I just went a little further, got scared and cracked the high speeds to .25 of a turn out on each. It's running 2 rich and foul plugs more than I'd like, not to mentchion has a faint miss at WOT...so gotta do something. LOL Why even have high speed adjusting if it's not used??? Thanks again

  6. #6
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    Quote Originally Posted by markymark30 View Post
    10-4 Well thank you! I appreciate it! Low speed screws are perfect. I recently rebuilt the carbs...originally set those screws out to 1.25 turns out just like you said and the manual, but never messed with them. I just went a little further, got scared and cracked the high speeds to .25 of a turn out on each. It's running 2 rich and foul plugs more than I'd like, not to mentchion has a faint miss at WOT...so gotta do something. LOL Why even have high speed adjusting if it's not used??? Thanks again
    If you modify the ski you will need to have a high speed adjuster,stock...set it & forget it.

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