1998-2001 Yamaha YFM600FHM Grizzly Factory Service Manual, Page 170Get this manual

1998-2001 Yamaha YFM600FHM Grizzly Factory Service Manual, Page 170

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CYLINDER AND PISTON
If out of specification, replace the piston pinOutside diameter (piston pin): 21.991 22.000 mm (0.8658 0.8661 in) Measure the piston inside diameter (6) Calculate the piston