1998-2001 Yamaha YFM600FHM Grizzly Factory Service Manual, Page 299Get this manual
REAR SHOCK ABSORBER AND SWINGARM 1.lnspect: Swingarm Bendscracksdamage
ICHASI"I
Replace
SWINGARM INSPECTION
2.lnspect: Pivot shafts Weardamage
Replace
Wash the swingarm pivoting parts in solvent