1987-2009 Yamaha ATV YFM350X Warrior Raptor Service Manual, Page 118Get this manual

1987-2009 Yamaha ATV YFM350X Warrior Raptor Service Manual, Page 118

INSPECTION AND REPAIR

End Gap: Top ring 0.20-0.40 mm (0.0080.016 in) 2nd ring 0.20-0.40 mm (0.008- 0.016 in) Oil ring 0.30-0.90 mm (0.012-0.036 in) PISTON PIN 1Inspect: .Piston pin Blue discolorationGrooves-rfteplacethen inspect lubrication system
2Measure: -Outside diameter (piston pin): Out of specification 4 Replace
Outside diameter (piston pin): 18.990-18.995 mm (0.75 in)

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