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  1. #1
    Myself's Avatar
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    Need 750 dual Keihin help please

    Got 2 stock 750ss xi. Totally rebuilt all 4 carbs and I'm getting tired of trying to tune them without knowing some base settings. Bone stock engines and flame arrestors. What should the popoff be? Where should the low and high screws be set? I've tried a couple different springs for popoff, and various low speed settings, and both machines have a terrible lean hesitation off idle. One is almost rideable, the other is bad enough you have to work the choke just right to get through it. Can somebody please give me a baseline to start with.


  2. #2
    stock spring should be used, set low jet at 1 1/2.

  3. #3
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    I've got a box full of springs, the problem is somebody had been in the carbs before and they were doing this before the rebuilds. That's why I need to know popoff. I'm pretty sure they had the wrong ones in there but I've tried 25psi and 35 psi with no luck.

  4. #4
    those popoff settings should be just fine as is then, richen the low side should fix it then, but popoff can be as high as 60, i run 25 popoff.

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