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Yamaha MX & Off-Road Dirt Bikes
yz250 powervalve question
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[QUOTE="420_darkside_420, post: 1184074, member: 77019"] my bike's powerband isn't kickin in, and i was told to check out the powervalve, so i took the cover off n found a loose screw . when the screw was loose i could push the valve system up and it would go back down when i let go, when i tightened the screw id move the system up and it stay's up until i push it back down again. does anyone know what or how it is supposed to be ? i don't have a book on my bike. thanks-steve [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
yz250 powervalve question
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