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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
buying a yamaha 600
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[QUOTE="dirt bike dave, post: 1401273, member: 18302"] I'd make sure you have the right valve clearances before you get too carried away fiddling with carb adjustments. The valves will get tight with wear, and will tighten up more as the motor heats up. Think about it - if your valve clearances are too tight, the valves are opening earlier and closing later, and may not even be closing all the way after the motor gets hot. Valves opening early or not closing all the way is a big problem for the motor at low rpm, but it may still run strong at higher rpm. By making the motor idle fast you could be covering up the problem of tight valves. Get the valves adjusted and it may idle nice and smooth down low. [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
buying a yamaha 600
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