2004-2005 Honda TRX450R Factory Sevice Manual, Page 216Get this manual
CRANKCASETRANSMISSIONCRANKSHAFTBALANCER Press new balancer shaft need le bearing into the left crankcase using he special toolsBALANCER SHA FT NEEDLEBEARING '
TOOLSDriver
Attachment, 32 35 mm Pilot20 mm
07749-0010000 07746-0010100
07746-0040500
Apply rease new balancer shaft oil seal lip and inst all it nt the left crank case
RIGHT CRANKCASE BEARING REPLACEMENT