Yamaha F4B Service Manual page 121

1
30
31
13 N·m (1.3 kgf·m, 9.6 ft·lb)
No. Part name
18 Rocker arm pivot
19 Valve adjusting locknut
20 Valve cotter
21 Valve spring retainer
22 Valve spring
23 Spring seat
24 Cylinder head bolt
25 Valve seal
26 Valve guide
27 Spark plug
28 Cylinder head
29 Intake valve
30 Exhaust valve
31 Dowel
2
2 N·m (0.2 kgf·m, 1.5 ft·lb)
2
3
4
5
8
6
7
29
26
24
25
27
23
24
22
Q'ty
2
2
2
2
2
2
4
2
2
1
1
1
1
2
8
14
24
15
28 16
24
26
25
16
23
22
17
21
10 N·m (1.0 kgf·m, 7.4 ft·lb)
21
a
13 N·m (1.3 kgf·m, 9.6 ft·lb)
20
b
28 N·m (2.8 kgf·m, 20.7 ft·lb)
Remarks
M8  60 mm

Cylinder head
9
10
11
12
13
12
12
12
13
10 N·m (1.0 kgf·m, 7.4 ft·lb)
17
18
18
19
7-28
0
1
2
3
4
5
6
7
8
9
10
A