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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
Acc. Pump Tuning?
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[QUOTE="Fark, post: 713086, member: 33930"] I picked up an 02 250F. I checked valve clearances, installed a clean filter, but the bike has a bog off idle when you stab the throttle. The only engine mod is a Dr D pipe. How can I determine if it's a lean or rich bog? Do most of you guys leave your AP alone and try ajdusting the needle first? [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
Acc. Pump Tuning?
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