2-18
TIGHTENING TORQUES
SPEC
ENGINE TIGHTENING TORQUES
Item
Fastener
Thread
size
Q’ty
Tightening
torque
Remarks
size
y
Nm
m
S
kg
Spark plugs
Cylinder head
Cylinder head
Cylinder head
Cylinder head
Camshaft caps
Cylinder head cover
Cylinder head (exhaust pipe)
Connecting rod caps
Engine hunger
Generator rotor
Crankshaft sprocket
Cap bolt (timing chain tensioner)
Camshaft sprocket
Water pump inlet pipe
Water pump outlet pipe
Oil/water pump assembly driven
sprocket
Oil pump
Oil cooler
Engine oil drain bolt
Oil strainer housing
Oil/water pump assembly driven
sprocket cover
Oil delivery pipe
Oil filter bolt
Oil filter cartridge
Oil strainer cover
Air cleaner case
Frame and air cleaner
Cylinder head and throttle
body and air cleaner case
Ring nut and cylinder head
Exhaust pipe and muffler
Emission check bolt
EXUP pulley cover
EXUP cable bracket
Exhaust pipe and exhaust valve
Exhaust valve and housing
EXUP pulley and arm shaft
Exhaust joint
Exhaust valve pipe
Air induction system pipe
Crankcase (cylinder head)
–
Nut
Nut
Cap nut
Bolt
Bolt
Bolt
Stud bolt
Nut
Screw
Bolt
Bolt
Bolt
Bolt
Bolt
Bolt
Bolt
Bolt
Bolt
–
Bolt
Bolt
Bolt
Bolt
–
Bolt
Screw
Bolt
Clamp
Nut
Bolt
Bolt
Bolt
Bolt
Bolt
Bolt
Bolt
Bolt
Bolt
Clamp
Stud bolt
M10
M10
M10
M10
M6
M6
M6
M8
M8
M6
M10
M10
M6
M7
M6
M6
M6
M6
M20
M14
M6
M6
M6
M20
M20
M6
M5
M6
M4
M8
M8
M6
M6
M6
M6
M6
M5
M4
M8
–
M10
4
2
6
2
2
28
6
8
8
4
1
1
1
4
1
1
1
2
1
1
2
1
1
1
1
15
8
1
8
8
1
4
3
2
4
3
2
4
1
4
10
13
20 + 121
_
(50)
20 + 105
_
(50)
20 + 140
_
(65)
12
10
12
15
20 + 120
_
10
65 + 60
_
60
7
24
10
10
15
12
35
43
10
12
10
70
17
10
4
10
3.0
20
20
10
10
10
10
10
5
3
20
3.5
10
1.3
2.0 + 121
_
(5.0)
2.0 + 105
_
(5.0)
2.0 + 140
_
(6.5)
1.2
1.0
1.2
1.5
2.0 + 120
_
1.0
6.5 + 60
_
6.0
0.7
2.4
1.0
1.0
1.5
1.2
3.5
4.3
1.0
1.2
1.0
7.0
1.7
1.0
0.4
1.0
0.3
2.0
2.0
1.0
1.0
1.0
1.0
1.0
0.5
0.3
2.0
0.35
1.0
19
