2001-2005 Honda TRX250EX Sportrax TRX250EX Factory Service Manual, Page 244Get this manual
REAR DRIVING MECHANISM Install the axle into the final gear case from right side until it is fully seatedInstall the following:left rear wheel and hub (page 14-3)rear brake housing (page 14-11)
FINAL DRIVE REMOVAL
Drain the final gear case oil (page 3-12)Remove the rear axle shaft (see previous pagel