2008 Yamaha Rhino YXR70FX Factory Service Manual, Page 353Get this manual
REAR CONSTANT VELOCITY JOINTS, FINAL DRIVE GEAR AND DRIVE SHAFT
3Install: ring gear fix bolt (M10) (into the drain plug hole) Ring gear fix bolt (M10) 90890-01527, YM-01527 NOTICE Finger tighten the bolt until it holds the ring gearOtherwise, the ring gear will be damaged