Lower Unit (Regular Rotation Model); Lower Unit (Counter Rotation Model); Bracket Unit - Yamaha F150A Service Manual

Part to be tightened
Connecting rod bolt
Main bearing cap bolt
Crankcase bolt

Lower unit (regular rotation model)

Part to be tightened
Drain screw
Check screw
Propeller nut
Trim tab bolt
Lower case mounting bolt
Ring nut
Pinion nut
Water inlet cover screw

Lower unit (counter rotation model)

Part to be tightened
Drain screw
Check screw
Propeller nut
Trim tab bolt
Lower case mounting bolt
Ring nut
Pinion nut
Water inlet cover screw

Bracket unit

Part to be tightened
Shift position switch screw
Shift cut-off switch screw
Shift bracket bolt
Shift rod detent bolt
Grease nipple
Hose joint adapter screw
Upper mounting nut
Lower mounting nut
Upper mount bolt
Baffle plate screw
Screw size
1st
2nd M9
3rd
1st
M10
2nd
1st
M8
2nd
1st
M10
2nd
Screw size
—
—
—
M10
M10
—
—
M5
Screw size
—
—
—
M10
M10
—
—
M5
Screw size
M4
M4
—
—
—
ø6
—
—
M10
M6
1-19
Specified tightening torque
Tightening torques
N·m kgf·m
13 1.3
23 2.3
90°
30 3.0
90°
14 1.4
28 2.8
30 3.0
90°
Tightening torques
N·m kgf·m
9 0.9
9 0.9
55 5.5
43 4.3
48 4.8
145 14.5
95 9.5
1 0.1
Tightening torques
N·m kgf·m
9 0.9
9 0.9
55 5.5
43 4.3
48 4.8
145 14.5
95 9.5
1 0.1
Tightening torques
N·m kgf·m
2.5 0.25
2.5 0.25
19 1.9
18 1.8
1 0.1
5 0.5
72 7.2
72 7.2
55 5.5
4 0.4
ft·lb
9.6
17.0
22.1
10.3
20.7
22.1
ft·lb
6.6
6.6
40.6
31.7
35.4
106.9
70.1
0.7
ft·lb
6.6
6.6
40.6
31.7
35.4
106.9
70.1
0.7
ft·lb
1.84
1.84
14.0
13.3
0.7
3.7
53.1
53.1
40.6
3.0