Tightening Torques; Specified Torques - Yamaha 25BMH Service Manual

SPEC

TIGHTENING TORQUES

SPECIFIED TORQUES

Part to be tightened
POWER UNIT
Recoil starter mounting
Recoil starter center boit
Recoil starter center Nut
Flywheel magnet
Power unit
mounting
Intake manifold
mounting
Spark plug
Cylinder head
mounting
Exhaust cover
mounting
Crankcase
mounting
LOWER UNIT
Propeller
Lower unit mounting
Propeller shaft housing
Pinion gear nut
Water inlet
BRACKET
Shift actuator mounting
Shift lever
Mount rubber(side upper)
Mount rubber(lower front)
Steering bracket
mounting
Clamp bracket nylon
ELECTRICAL
CDI unit
Ignition coil
Engine stop switch
* Do not apply too much torque.
TIGHTENING TORQUES
Part Thread
name
Bolt
Bolt M12
Nut
Nut M12
1st
Bolt
2nd
1st
Bolt
2nd
— M14
1st
Bolt
2nd
1st
Bolt
2nd
1st
Bolt
2nd
Nut
Bolt M10
Nut M10
Bolt
Nut
Bolt
Bolt
Nut M10
Bolt
Nut M10
Bolt
Bolt
Nut
Bolt
Bolt
Nut M16
Tightening torques
Q'ty
size
N
•
M6 3 12
1 15
— 1 10
1 140
11
M8 6
22
4
M6 9
8
2 25
15
M8 11
30
4
M6 15
8
15
M8 10
30
— 1 35
6 37
6 37
M6 2 11
M8 1 50
M5 2 5
M6 4 11
1 17
M6 1 11
2 17
M8 2 17
M6 4 11
— 2 45
M6 2 4
M6 2 8
1 35
2-11
m kgf m ft lb
• •
1.2 8.9
1.5 11
1.0 7 .4
14 103
1.1 8.1
2.2 16
0.4 3.0
0.8 5.9
2.5 18
1.5 11
3.0 22
0.4 3.0
0.8 5.9
1.5 11
3.0 22
3.5 26
3.7 27
3.7 27
1.1 8.1
5.0 37
0.5 3.7
1.1 8.1
1.7 13
1.1 8.1
1.7 13
1.7 13
1.1 8.1
4.5 33
0.4 3.0
0.8 5.9
3.5 26
E
Remarks
D