Yamaha F50F Service Manual page 45

Part to be tightened
Cylinder head bolt
Spark plug
Cooling water temperature sensor
Oil pressure switch
Oil pressure switch lead bolt
Exhaust cover bolt
Exhaust cover plug
Oil filter union bolt
Oil pump screw
Crankcase bolt
Connecting rod cap bolt
Lower unit (F50, F60)
Gear oil drain screw
Gear oil check screw
Lower case mounting bolt
Propeller nut
Ring nut
Cooling water inlet cover screw
Pinion nut
Propeller shaft housing bolt
Lower unit (FT50, FT60)
Gear oil drain screw
Gear oil check screw
Lower case mounting bolt (nut)
Propeller nut
Ring nut
Cooling water inlet cover screw
Pinion nut
Propeller shaft housing bolt
6C13G11
Thread size
1st
M6
2nd
1st
2nd M9
3rd
—
—
—
M4
1st
M6
2nd
M14
M18
—
M6
1st
M6
2nd
1st
M8
2nd
1st
—
2nd
—
—
M10
M16
—
—
M16
M8
—
—
M10
M16
—
—
M16
M8
Tightening torques
Tightening torques
N·m kgf·m
6 0.6
12 1.2
12 1.2
23 2.3
90°
17 1.7
23 2.3
8 0.8
2 0.2
6 0.6
12 1.2
23 2.3
55 5.5
40 4.0
4 0.4
6 0.6
12 1.2
15 1.5
30 3.0
6 0.6
17 1.7
9 0.9
9 0.9
39 3.9
34 3.4
103 10.3
4 0.4
74 7.4
16 1.6
9 0.9
9 0.9
39 3.9
34 3.4
103 10.3
4 0.4
93 9.3
16 1.6
ft·lb
4.4
1
8.9
8.9
17.0
12.5
2
17.0
5.9
1.5
4.4
3
8.9
17.0
40.6
29.5
3.0
4
4.4
8.9
11.1
22.1
5
4.4
12.5
6.6
6.6
6
28.8
25.1
76.0
3.0
7
54.6
11.8
6.6
6.6
8
28.8
25.1
76.0
3.0
9
68.6
11.8
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