2006-2009 Honda TRX250EX/TRX250X Service Manual, Page 304Get this manual
REAR DRIVING MECHANISM Remove the ring gear and shimsRING GEAR
BEARING INSPECTION
Turn the inner race of each bearing in the gear case and case cover with you finge rThe bearings should turn smoothly and quietlyAlso check that the bearing outer race fits tightly in the case or
coverFor ring gear bearing replacement, see page 16-14
GEAR TOOTH CONTACT PATTERN CHECK