2004 Official factory service manual for Yamaha YFZ450S ATV Quad., Page 243Get this manual
REAR AXLE AND REAR AXLE HUB 8Remove: rear axle (with driven sprocket) CAUTION:
Never directly tap the axle end with hammer, since this will result in damage to the axle thread and spline Attach suitable socket on the axle end and tap it with soft hammer, then pull out the rear axle to the right9Remove: circlip driven sprocket bracket
EBS00395