1986-1989 Honda TRX250 FourTrax 250R Service Manual, Page 148Get this manual
REAR WHEELDRIVE MECHANISM Remove th sprocket nuts, bolts and final driven sprocketfro the sprocket hub
Loosenthe axle inner lock nut while holdingthe outer lock nutNOTE The lock nuts have left-hand threads
TOOLS: Lock nut wrench, 56 mm
Lock nut wrench, 45 mm
07916- HA200000r 07916-HA20106(U.S.Aonly) 07916-1870101 or equivalent commercially available in U.S.A
(2) LOCK NUT WRENCH, 45 m
Hold the rear axle by applying the rear brakeLoosen the outer lock nut untilthe snap ring can be removedNOTE The lock nuts have left-hand threads