2002 Yamaha YFM660 Grizzly factory service and repair manual, Page 286Get this manual
REAR CONSTANT VELOCITY JOINTFINAL DRIVE GEAR AND DRIVE SHAFT
Adjusting the ring gear stopper 1.Measure: Ring gear stopper clearance "D" Use feeler gauge 1Out of specification AdjustRing gear stopper clearance "D": 0.300.60 mm (0.0120.024 in)
2 Ring gear Ring gear stopper
2.Remove: Nut 3.Loosen: Ring gear stopper Adjusting steps: Turn the ring gear stopper in or out until to the specified clearanceRing gear stopper clearance: 0.30.6 mm (0.0120.024 in)