2001 Yamaha YZ250F — Owner's Manual
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This manual will provide you with a good basic understanding of features, operation, and basic maintenance and inspection items of this machine. Please read this manual carefully and completely before operating your new machine. If you have any questions regarding the operation or maintenance of your machine, please consult your dealer. To optimize the fuel flow at a small throttle opening, each machine’s pilot screw has been individually set at the factory.
Before removing the pilot screw, turn it in fully and count the number of turns. Record this number as the factory-set number of turns out.