1987-2009 Yamaha ATV YFM350X Warrior Raptor Service Manual, Page 107Get this manual

1987-2009 Yamaha ATV YFM350X Warrior Raptor Service Manual, Page 107

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INSPECTION AND REPAIR

Resurface
Cylinder head warpage: Less than 0.03 mm (0.0012 in)

4 Resurface:Cylinder head

Resurfacement steps: Place 400- 600 grit wet