2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 313Get this manual
CRANKCASETRANSMISSIONCRANKSHAFTBALANCER ('04'05) Drive new mainshaft and countershaft bearings into the left crankcase with the markings facing up, using the special toolsTOOLS: Mainshaft bearing: Driver Attachment, 37 40 mm Pilot, 17 mm Countershaft bearing: Driver Attachment, 52 55 mm DRIVER
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Apply locking agent to the set plate screw threadsInstall the countershaft bearing set plates and tighten the screws securely