Yamaha YZ 2020 Series Owner's Service Manual page 213

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
1
2
3
3
E
4
5
6
7
M
8
5-26
VALVES AND VALVE SPRINGS
1
2
3
3
4
E
5
6
7
M
9
Q'ty
Refer to "CYLINDER HEAD" on page 5-21.
4
4
8
4
4
4
4
2
2
Remarks