1993-2000 Honda TRX300EX Service Manual, Page 91Get this manual
Primary Drive Gear RemovaU lnstallation
NOTE: The primary drive gear lock nut has left-hand threadsIf the gear holder (07724 -00 10100) is not available, shift the transmission into gear and hok:ler the drive sprocket with universal holder (07725- 003(X)()()Iand loosen the primary drive gear lock nut before removing the ch.Jtch assembly
Requisite Service
Oil pump removaVlnstallation (page 4-3)