1998-2001 Yamaha YFM600FHM Grizzly Factory Service Manual, Page 257Get this manual
REAR AXLEFINAL DRIVE GEAR AND DRIVE SHAFT ioo 1.5 mm (0.06 in)
FINAL GEAR LASH MEASUREMENT AND ADJUSTMENT Final gear lash measurement 1.Secure the gear case in vise or another supporting device2.Remove: Drain plug Gasket 3.lnstall: bolt of the specified size CD (into the drain plug hole)
Finger tighten the bolt until it holds the ring gearOtherwise, the ring gear will be damaged