2005-2006 Honda ATV TRX500FE/FM/TM FourTrax Foreman Factory Service Manual, Page 314Get this manual
FRONT DRIVING MECHANISM (FMFE models) DIFFERENTIAL HOUSINGFACE CAM CAM FOLLOWER
If the differential housing or face cam are faulty, replace the differential as an assembly
Check the sliding surface and grooves of the housing for damage or discoloration
DIFFERENTIAL HOUSING
Replace the cam Check the shim, face cams and followers for