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Thread: 1978 ATC 90 carb questions

  1. #1
    ATC350X 85 is offline At The Back Of The Pack Arm chair racerFirst time rider
    Join Date
    Sep 2002
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    197

    1978 ATC 90 carb questions

    I think i have this right, but for the adjustments on the carb I was told 1- 1/8-1-3/4 for the mixture screw and 1/4 for the idle adjustment. Are those correct? Now the idle adjust is the screw the goes in right by the slide right? And the mixture screw is the screw to the bottom right corner of the carb, right?
    Justin
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  2. #2
    Join Date
    Nov 2002
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    1,189
    yep, and yep, the mixture screw should be loose, and not tightend in.... a lot of people get the mixture screw and the plug screw mixed up....
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