2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 385Get this manual
REAR WHEELSUSPENSION two bolts, collars and drive chain guard Turn the rear axle bearing holder to obtain maximum drive chain slack (page 4-22)Remove the drive chain from the driven sprocket
Remove the cotter pin from the left wheel hub nutLoosen the hub nutRemove the wheel nuts and left rear wheelRemove the hub nut and left wheel hub