1998-2001 Yamaha YFM600FHM Grizzly Factory Service Manual, Page 256Get this manual
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REAR AXLEFINAL DRIVE GEAR AND DRIVE SHAFT
DRIVE SHAFT INSPECTION 1.lnspect: Drive shaft (splines) CD Coupling gear (splines) Weardamage Replace
FINAL DRIVE GEAR INSPECTION 1.lnspect: Final