Yamaha RS90K Manuel D'atelier page 474

VALVES AND VALVE SPRINGS
1
2
M
3
M
Order Job name/Part name
Valves and valve springs removal
Cylinder head
1 Valve lifter
2 Valve pad
3 Valve cotter
4 Upper spring seat
5 Valve spring
6 Intake valve
7 Exhaust valve
8 Oil seal
9 Lower spring seat
10 Valve guide
VALVES AND VALVE SPRINGS
3
4
New
5
8
9
1
2
3
4
5
New
8
10
7
Q'ty
Remove the parts in the order listed below.
Refer to "CYLINDER HEAD".
12
12
24
12
12
6
6
12
12
12
For installation, reverse the removal proce-
dure.
5-28
ENG
3
M
9
M
10
6
M
Remarks