Yamaha 40V - Tightening Torque

2-17
SPEC
E
TIGHTENING TORQUE
TIGHTENING TORQUE
SPECIFIED TORQUE
Part to tightened
Part
name
Thread
size
Q‘ty
Tightening torque Remarks
Nm m•kg ft•lb
ENGINE:
Engine unit Bolt M8 8 21 2.1 15
Flywheel Nut M16 1 110 11 80
E
Intake manifold
1st
Bolt M6 12
4 0.4 2.9
2nd 8 0.8 5.8
Reed valve Bolt M3 12 1 0.1 0.7
Spark plug Bolt M14 3 25 2.5 18
Cylinder head
1st
Bolt M8 14
15 1.5 11
572
LT
2nd 28 2.8 20
Exhaust cover
1st
Bolt M6 14
4 0.4 2.9
572
LT
2nd 8 0.8 5.8
Crank case
1st
Bolt
M6 6
5 0.5 3.6
2nd 11 1.1 8.0
1st
M8 8
15 1.5 11
2nd 28 2.8 20
LOWER:
Propeller Nut M16 1 30 3.0 22
Lower unit Bolt M10 5 40 4.0 29
572
LT
Propeller shaft housing Bolt M8 2 16 1.6 11
Pinion nut Nut M12 1 75 7.5 54
Water inlet Bolt M6 1 5 0.5 3.6
242
LT
BRACKET:
Tiller handle mounting Nut M10 2 38 3.8 27
Steering friction mounting Nut 7/8 UNF 2 20 2.0 14
Tiller handle pivot Bolt M12 1 38 3.8 27
Muffler Bolt M2 8 21 2.1 15
572
LT
Exhaust manifold Bolt M3 8 21 2.1 15
Exhaust guide Bolt M4 8 21 2.1 15
Clamp bracket (manual tilt) Nut 7/8 UNF 2 45 4.5 32
Clamp bracket Nut 7/8 UNF 2 24 2.4 17
PTT UNIT:
Plug screw Bolt M8 1 7 0.7 5.1
Tilt cylinder ass’y Bolt M6 3 9 0.9 6.5
242
LT
Motor unit Bolt M3 5 4 0.4 2.9
572
LT
Tilt cylinder end bolt Bolt — 1 90 9.0 65
Inner cylinder end bolt Bolt — 1 70 7.0 50
Gear pump Bolt M4 4 4 0.4 2.9
Bottom cover Bolt M6 4 7 0.7 5.1
572
LT
Retaining plate Bolt M5 2 4 0.4 2.9
Main valve Bolt — 2 11 1.1 8.0