2005 Kawasaki KAF400 Mule 600 and Mule 610 4x4 Service Manual, Page 225Get this manual
11-8 FINAL DRIVE Front Final Gear Case (KAF400-AC)
Front Final Gear Case Oil Level Inspection
Remove: [A] Filler Cap
CAUTION
Be careful not to allow any dirt or foreign materials to enter the gear case
oil The oil Check the the levelopening level should come to the bottom [A] of filler [B]If it is insufficient, first check the front final gear case for oil leakage, remedy it if necessary, and add oil through the filler openingUse the same type and brand of oil that is already in the final gear caseBe sure the O-ring [C] is in place, and tighten the filler capTorqueFront Final Gear Case Oil Filler Cap: 29 Nm (3.0 kgfm, 22 ftlb)