2007-2009 Honda TRX300EX TRX300X service manual, Page 214Get this manual
CRANKCASETRANSMISSIONCRANKSHAFT
CRANKCASE BEARING
INSPECTION
Remove the crankshaft and balancer (page 12-17)Turn the inner race of each crankcase bearing with your fingerThe bearing should turn smoothly and quietlyAlso check that the bearing outer race fits tightly in the crankcaseReplace any bearing if the inner race does not turn smoothly, quietly or if the outer race fits loosely in the crankcase
RIGHT CRANKCASE BEARING REPLACEMENT