2002 Yamaha YFM660 Grizzly factory service and repair manual, Page 272Get this manual
FRONT CONSTANT VELOCITY JOINTS AND DIFFERENTIAL GEAR
4.Check: Differential gear operation Unsmooth operation Replace the differential gear assemblyInsert the double off-set joint into the differential gear, and turn the gear back and forth
INSTALLING THE UNIVERSAL JOINT 1.Install: Universal joint Installation steps: Install the opposite yoke into the U-jointApply wheel bearing grease to the bearingsInstall the bearing onto the yoke