1997-2004 Honda Fourtrax Recon TRX250TE/TM Service Manual, Page 284Get this manual
REAR DRIVING MECHANISM Install the stopper ring into the groove securely_
STOPPE RING
Heat the final gearcase to BO"C (176"F) and reeze the pinion needle bearing on ice or in freezer
PINION NEEDLE BEARING
Always wear gloves when handling the case after it has been heated to prevent burning your hands
DRIVE RATTACHMENT