2001 Yamaha YFM660 Raptor Factory Service Manual, Page 279Get this manual

2001 Yamaha YFM660 Raptor Factory Service Manual, Page 279

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CARBURETORS
Before reassembling, wash all of the parts in clean petroleum based solvent
1.Install: Pilot screw OTE: Before assembling the carburetor, make sure to turn out the pilot screw