2004 Official factory service manual for Yamaha YFZ450S ATV Quad., Page 188Get this manual
CLUTCH EBS00311
INSTALLING THE CLUTCH 1Install: push lever NOTE: Align the punch mark on the push lever with the punch mark on the push lever shaft_
2Install: clutch housing NOTE: Make sure that the primary driven gear teeth and primary drive gear teeth mesh correctly Make sure that the oil pump drive gear teeth and oil pump driven gear teeth mesh correctly_