2000-2003 Honda TRX350 Rancher factory service manual, Page 276Get this manual
REAR DRIVING MECHANISM PINION GEAR REMOVAL Remove the oil seal from the gear caseBe caref ul that metal particles do not enter the bearing and the threads of the case are not damaged
OIL SEAL
Unstake
LOCK NUT
Unstake the pinion bearing lock nut with drill or grinder
Remove the lock nut and discard itTOOL: Lock nut wrench, 30
LOCK NUT WRENCH
64 mm 07916-MB00002