2-12
TIGHTENING TORQUES
TIGHTENING TORQUES
ENGINE
△
- marked portion shall be checked for torque tightening after break-in or before each race.
*1: Tighten the cylinder head bolts to 30 Nm (3.0 m•kg, 22 ft•lb) in the proper tightening sequence, remove and retighten
the cylinder head bolts to 20 Nm (2.0 m•kg, 14 ft•lb) in the proper tightening sequence, and then tighten the cylinder head
bolts further to reach the specified angle 180° in the proper tightening sequence.
Starting circuit cut-off relay:
Model/manufacturer
ACM33221 M06/MATSUSHITA
----
Coil winding resistance
75.69–92.51
Ω
at 20 °C (68 °F)
----
Fuse (amperage×quantity):
Main fuse
10 A × 1
----
Reserve fuse
10 A × 1
----
Item
Standard
Limit
Part to be tightened
Thread size
Q'ty
Tightening torque
Nm
m•kg
ft•lb
Spark plug
M10S × 1.0
1
13
1.3
9.4
Camshaft cap
M6 × 1.0
10
10
1.0
7.2
Cylinder head blind plug screw
M12 × 1.0
1
28
2.8
20
Cylinder head (stud bolt)
M8 × 1.25
1
15
1.5
11
Cylinder head (bolt)
M10 × 1.25
4
Refer to NOTE.*1
Cylinder head (bolt)
M6 × 1.0
2
10
1.0
7.2
Cylinder head cover
M6 × 1.0
2
10
1.0
7.2
Cylinder
M6 × 1.0
1
10
1.0
7.2
Timing chain tensioner
M6 × 1.0
2
10
1.0
7.2
Timing chain tensioner cap bolt
M6 × 1.0
1
7
0.7
5.1
Timing chain guide (intake side)
M6 × 1.0
2
10
1.0
7.2
Exhaust pipe (nut)
M8 × 1.25
1
20
2.0
14
Exhaust pipe (bolt)
M8 × 1.25
1
20
2.0
14
△
Silencer
M8 × 1.25
2
30
3.0
22
Silencer clamp
M8 × 1.25
1
16
1.6
11
Exhaust pipe protector
M6 × 1.0
3
10
1.0
7.2
Spark arrester
M5 × 0.8
4
7
0.7
5.1
Silencer cap
M5 × 0.8
6
5
0.5
3.6
Air induction pipe
M6 × 1.0
2
10
1.0
7.2
Air cut-off valve assembly and bracket
M6 × 1.0
2
10
1.0
7.2
Bracket (air cut-off valve) and frame
M6 × 1.0
2
7
0.7
5.1
Carburetor joint
M6 × 1.0
3
10
1.0
7.2
Carburetor joint clamp
M4 × 0.7
1
3
0.3
2.2
△
Air filter case
M6 × 1.0
2
8
0.8
5.8
Air filter joint clamp
M6 × 1.0
1
3
0.3
2.2
Air filter joint and air filter case
M5 × 0.8
1
4
0.4
2.9
Throttle cable adjust bolt and locknut
M6 × 0.75
1
4
0.4
2.9
Throttle cable (pull)
M6 × 1.0
1
4
0.4
2.9
Throttle cable (return)
M12 × 1.0
1
11
1.1
8.0
Summary of Contents for WR450FX
Page 2: ...ProCarManuals com...
Page 43: ...2 18 TIGHTENING TORQUES ProCarManuals com...
Page 69: ...3 16 ENGINE INTAKE EXHAUST ProCarManuals com...
Page 82: ...3 29 ELECTRICAL Charging method using a variable voltage charger ProCarManuals com...
Page 83: ...3 30 ELECTRICAL Charging method using a constant voltage charger ProCarManuals com...
Page 205: ...7 8 ELECTRIC STARTING SYSTEM 2 Inspect Rubber part a Tears damage Replace ProCarManuals com...
Page 219: ...ProCarManuals com...
