2005 Kawasaki KAF400 Mule 600 and Mule 610 4x4 Service Manual, Page 244Get this manual
FINAL DRIVE 11-27 Bevel Gear Case (KAF400-AC)
Apply grease to the oil seal lip, and install it Install: Ring [A] Snap
Install the snap ring on the cap [B] of the snap ring guideSpecial ToolSnap Ring Guide, 2257001-1634
Slide the snap ring [A] until the ring gets to the body [B]
of the snap ring guideRemove the cap from the body
Cover the body [A] on the driven bevel gear shaft, and