1998-2001 Yamaha YFM600FHM Grizzly Factory Service Manual, Page 251Get this manual

1998-2001 Yamaha YFM600FHM Grizzly Factory Service Manual, Page 251

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REAR AXLEFINAL DRIVE GEAR AND DRIVE SHAFT
Shim selection steps: eTo find the final drive pinion gear shim thickness" A", use the following formula

Final drive pinion gear shim thick