Tightening Torques; Specified Torques - Yamaha F40BMHD Service Manual

SPEC

TIGHTENING TORQUES

SPECIFIED TORQUES

Part to be tightened
POWER UNIT
Power unit mounting
Flywheel
Carburetor unit assembly
Oil filter
Oil filter plug
Spark plug
Driven sprocket
Cylinder head
Rocker arm shaft
Tappet adjusting screw
locknut
Exhaust cover
Crankcase
Connecting rod
LOWER
Propeller
Lower unit mounting
Propeller shaft housing
Pinion nut
Water inlet
BRACKET
Tiller handle mounting
Steering bracket
Steering friction
mounting
Tiller handle pivot
Rubber mount, upper
* As for the connecting rod, tighten the bolts to the specified torque at first, and then apply
additional tightening torque specified by angle.
TIGHTENING TORQUES
Part Thread
name
Bolt
Nut M20
Bolt
—
—
— M12
Bolt M10
1st
Bolt
2nd
1st
Bolt
2nd
Bolt
Nut
1st
Bolt
2nd
1st
Bolt
2nd
1st
Bolt
2nd
1st *
Bolt
2nd
Nut M16
Bolt M10
Bolt
Nut M12
Bolt
Nut M10
Nut M10
Bolt
Bolt M12
Nut
Tightening torques
Q'ty
size
Nm
M8 8 21
1 157
M6 6 8
— 1 17 .5
— 1 40
3 17 .2
1 38
22.6
M9 8
46.1
6
M6 4
11.8
M8 4 18
M6 6 13.5
6
M6 8
12
6
M6 8
12
15
M8 8
30
8.4
M6 6
1 39
4 39
M8 2 16
1 73.5
M6 1 5
2 37
2 36
— 2 3.9
1 37
M8 2 23.6
2-15
Remarks
m kgf ft lb
• •
2.1 15
16.0 116
0.8 5.9
1.8 13
4.0 30
1.7 13
3.8 28
2.3 17
4.6 34
0.6 4.4
1.2 8.7
1.8 13
1.4 10
0.6 4.4
1.2 8.9
0.6 4.4
1.2 8.9
1.5 11
3.0 22
0.8 6.2
40°
3.9 29
3.9 29
1.6 12
7 .4 54
0.5 3.6
3.7 27
3.6 27
0.4 2.9
3.7 27
2.4 17
E