Yamaha YZ450FN 2022 Owner's Service Manual page 211

EAM20108
VALVES AND VALVE SPRINGS
Removing the valves and valve springs
Order Job/Parts to remove
Cylinder head
1 Valve lifter
2 Adjusting pad
3 Valve cotter
4 Valve spring retainer
5 Valve spring
6 Valve stem seal
7 Valve spring seat
8 Intake valve
9 Exhaust valve
VALVES AND VALVE SPRINGS
1
1
2
3
2
4
3
4
3 3
5
5
5
7 7
7 7
6
8 9 9
Q'ty
5-25
3 3
6
Remarks
Refer to "CYLINDER HEAD" on page 5-20.
4
4
8
4
4
4
4
2
2