1998-2001 Yamaha YFM600FHM Grizzly Factory Service Manual, Page 127Get this manual
REAR SHOCK ABSORBER ADJUSTMENTI TIRE INSPECTION
IINSP Ito) ADJ
REAR SHOCK ABSORBER ADJUSTMENT 1.Adjust: Spring preload Turn the adjusting lever CD to soft or hard Ii) the spring preloadNOTE: _
The spring preload of the rear shock absorber can be adjusted to suit the rider's preference, and the riding conditions2.Lubricate: Adjusting lever pivot