1988-1994 Honda TRX300 Fourtrax, 1988, 1990-1994 TRX300FW Fourtrax Service Manual, Page 169Get this manual
CRANKCASECRANKSHAFT TRANSMISSION Stake the outer and inner race lock nuts
Install new oil seal and stopper ring
INSTALLATION
Apply oil to the output gear case hole in the left crankcaseInstall new a-ring to the gear caseInstall the dowel pin and output gear case to the crankcase