2004-2005 Honda TRX450R Factory Sevice Manual, Page 258Get this manual
REAR WHEELSUSPENSION two bol ts, co lla rs and dr ive chain guard Turn th rear ax le beari ng ho lder ob ta in maximum rive chain slack (page 4-18 )Remove th rive chain from the riv en sproc ket
CHAIN GUARD
Rem ove the ccrter pin from the left wheel hub nut
l oose the hub nut Rem ove the wheel nuts and left rear wheelRemove the hub nut and left wheet hub