2002 Yamaha YFM660 Grizzly factory service and repair manual, Page 179Get this manual

2002 Yamaha YFM660 Grizzly factory service and repair manual, Page 179

CYLINDER AND PISTON

CHECKING THE PISTON PIN 1.Check: Piston pin Blue discolorationgrooves Replace, then inspect the lubrication system2.Measure: Piston pin-to-piston clearance Measurement steps: Measure the piston pin outside diameter aIf out of specification, replace the piston pinOutside diameter (piston pin): 21.99122.000 mm (0.86580.8661 in) Limit: 21.971 mm (0.8650 in)
Measure

the piston inside diameter b
Piston pin bore inside diameter: 22.00422.015 mm (0.86630.8667 in) Limit: 22.045 mm (0.8679 in)

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