Lower Unit (Regular Rotation Model) - Yamaha F150B Service Manual

SPEC
Part to be tightened
Thermoswitch
Exhaust cover plug
Exhaust cover bolt
Engine temperature sensor
Cylinder block plug
Engine hanger bolt
Oil pressure sensor
Oil filter
Oil filter union bolt
Crankcase plug
Crankcase cover bolt
Oil pump screw
Crankcase bolt
Main bearing cap bolt
Connecting rod cap

Lower unit (regular rotation model)

Part to be tightened
Gear oil check screw
Gear oil drain screw
Lower case mounting bolt
Trim tab bolt
Propeller nut
Cooling water inlet cover screw
Ring nut
Pinion nut
1-19
Specification
1st
2nd
1st
2nd
1st
2nd
1st
2nd
1st
2nd
1st
2nd
1st
2nd
1st
2nd
3rd
Thread size
N·m
6
—
12
M14 23
M18 55
6
M6
12
— 15
M14 23
M6 12
— 18
— 18
— 34
— 54
7
M6
13
18
M8
31
— 4
30
M10
14
M8
26
30
M10
23
— 43
Thread size
N·m
— 9
— 9
M10 47
M10 42
— 54
M5 5
— 143
— 94
Tightening torques
kgf·m ft·lb
0.6 4.4
1.2 8.9
2.3 17.0
5.5 40.6
0.6 4.4
1.2 8.9
1.5 11.1
2.3 17.0
1.2 8.9
1.8 13.3
1.8 13.3
3.4 25.1
5.4 39.8
0.7 5.2
1.3 9.6
1.8 13.3
3.1 22.9
0.4 3.0
3.0 22.1
90°
1.4 10.3
2.6 19.2
3.0 22.1
90°
2.3 17.0
4.3 31.7
90°
Tightening torques
kgf·m ft·lb
0.9 6.6
0.9 6.6
4.7 34.7
4.2 31.0
5.4 39.8
0.5 3.7
14.3 105.5
9.4 69.3