2004-2005 Honda TRX450R Factory Sevice Manual, Page 201Get this manual
CRANKCASETRANSMISSIONCRANKSHAFTBALANCER
BALANCER GEARBALANCER
REMOVEAL
Remove the fo llowingflywhe el {page 16-9)
right crankcase cover (page 11-5) clutch (page 11-5)
Temporarily install the clutch outer guide, needle bea ring and clutch outer onto the mainshaftInst all th speci al oo between he primary drive and driven gears as shownand loosen the primary driv gear bolt
Gear holderM2.5
077240010100 or 07724-001Al00 (U.S.Aonlv)
Remove he clutch outer, needle bearing and clutch outer guideRemove the primary drive gear bolt, washer and gearBe care ful no! 10 damag th basne er shaft threa ds