1998-2001 Yamaha YFM600FHM Grizzly Factory Service Manual, Page 170Get this manual
Quality of the image is intentionally reduced!
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