Scooter Air/Fuel Mixture Screw Adjustment




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John Crane: Aughhhhhh... always turn the screw in first counting how far until stop, now turn the screw out until the same height and in case of CC upgrade, add a quarter turn. That will get you in the ballpark. Using a vacuum gage you turn the screw until it gets it's greatest vacuum at idle, them back out the screw slowly until the vacuum just starts to drop.

inmylifetime99: When you drill make sure it does not touch the screw underneath. Make sure you do not drill all the way through or you may damage the air/fuel mixture screw underneath. Once the cap is off screw it all the way in and back it out 2 1/2 turns out counter clockwise. This should be set, if not turn clockwise little by little until it does not bogg down.

Paul Shpakov: Excellent video! It's simple, and correct. Thank you!
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Scooter Air/Fuel Mixture Screw Adjustment 3.5 out of 5

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