2002 Yamaha YFM660 Grizzly factory service and repair manual, Page 269Get this manual

2002 Yamaha YFM660 Grizzly factory service and repair manual, Page 269

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FRONT CONSTANT VELOCITY JOINTS AND DIFFERENTIAL GEAR
CHECKING THE GEAR MOTOR 1.Check: Gear motor Checking steps: Connect two size batteries to the gear motor terminals 1(as shown illustration)