2004-2006 Honda FourTrax Rancher TRX350TE/TM/FE/FM Service Manual, Page 76Get this manual
MAINTENANCE DIFFERENTIAL OIL (FMFE only) LEVEL CHECK
Place the vehicle on level surfaceRemove the oil filler cap and check that the oil level is to lower edge of the oil filler holeCheck fo leaks if the il leve is lowPour the oil into th iller hole unti it reac hes the lower edge of the hole
RECOMMENDED OIL: Hypoid gear oil SAE80
Coat new a-ring with grease and install it into th filler cap grooveInstall the filler cap and tighten It
TORQUE: 12 Nm (1 .2 kgfmIbftt) Oil CHANGE