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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
Can't Get PW80 Idle Down?
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[QUOTE="FruDaddy, post: 981886, member: 63076"] It could be the pilot jet. As far as the adjustment screws, when standing on the left side and looking at the bike, the pilot air screw is in the middle about 1/2 -3/4 inch above the bowl and the throttle stop screw is on it's left right next to the inlet duct. I think this is the one you are asking about. All the way in would definitely cause a high idle. Bring it out a bunch. Your pilot screw should not be more than 3 turns from lightly seated, and you should start at 1 1/2 turns out. After you get the idle down, you adjust the air screw to achieve the highest idle speed, then readjust the throttle stop. I think that the baseline on the needle is the third slot, but it should not affect the idle. You might also take a look at the reed. [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
Can't Get PW80 Idle Down?
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