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Yamaha MX & Off-Road Dirt Bikes
Need help with an '04 PW80 - won't run off the choke
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[QUOTE="Baker1, post: 1058503, member: 69626"] 2004 PW80 barely used, bought from a friend of friend. It was described as "cold natured", needed to warm up a long time. Bone stock. It starts right up, has plenty of power. But it will not run if you flip the choke off. It won't even idle. If you hold the throttle open at medium or high rpms, then flip the choke off, it dies anyway. I sprayed carb cleaner and compressed air through pilot circuit, throttle-stop hole, main and float channels. I removed and cleaned main jet assy and float needle. I set pilot at 1.5 turns out, and have tried various combinations of pillot and throttle stop screw. No luck. I live at 4500'. I put a 125 jet in it as recommended by dealer here, but nothing changed. It runs fine on the choke ( smoky) and won't run off of it. It will cruise fast in all gears and doesn't lack power. It just won't run off the choke. I can't figure it out. Anyone??? Also, I looked carefully for a washer or o-ring on the pilot screw or left in the pilot hole when I removed the screw. But I didn't see either. Should there be a washer or oring on the pilot screw on this bike? THANKS!!!! [/QUOTE]
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Yamaha MX & Off-Road Dirt Bikes
Need help with an '04 PW80 - won't run off the choke
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