2001-2005 Honda TRX250EX Sportrax TRX250EX Factory Service Manual, Page 144Get this manual
GEARSHIFT LINKAGE Remove the dowel pin from the gearshift drumRemove the following:gearshift drum stopper arm boltgearshift drum stopper armwasherreturn spring
Remove the sub-gearshift spindle and thrust washer from the rear crankcase