1988-1994 Honda TRX300 Fourtrax, 1988, 1990-1994 TRX300FW Fourtrax Service Manual, Page 163Get this manual
CRANKCASECRANKSHAFT TRANSMISSION
OUTPUT SHAFT DISASSEMBLY
Remove the oil seal stopper ring and oil sealDiscard the oil seal
(1) OIL SEAL
Unstake the output shaft bearing race lock nuts with drill or grinderBe careful that metal particles do not enter the bearing, and that the threads on the shaft are not damaged
LOCK NUTS
Place the output gear case in vise, being careful not to distort it
CAUTION
Use soft jaws to prevent damage to the gear caseHold the output shaft and remove the bearing inner race lock nut