Yamaha F150A Service Manual page 272

4. Tighten the cylinder head bolts "2" to the
specified torques in 2 stages and in the
order [11], [12], and so on.
[9] 1
2
[17]
[15]
[5]
[13]
[1]
[11]
[12]
[4]
[14]
[16]
[8]
[20] [19] [18]
Cylinder head bolt "1" [1]–[10] (M10):
1st: 28 N·m (2.8 kgf·m, 20.7 ft·lb)
2nd: 56 N·m (5.6 kgf·m, 41.3 ft·lb)
3rd: 90°
Cylinder head bolt "2" [11]–[20] (M8):
4th: 14 N·m (1.4 kgf·m, 10.3 ft·lb)
5th: 28 N·m (2.8 kgf·m, 20.7 ft·lb)
5. Install the valve lifters "1".
1
[10]
90
a
[6]
[2]
[3]
[7]
7-47
Cylinder head
10
0
1
2
3
4
5
6
7
8
9
A