Tightening Torques - Yamaha YZ450F(X) Owner's Service Manual

ELECTRICAL
Ignition system:
Advancer type
CDI:
Magneto-model (stator)/manufacturer
Charging coil 1 resistance (color)
Charging coil 2 resistance (color)
Pickup coil resistance (color)
CDI unit-model/manufacturer
Ignition coil:
Model/manufacturer
Minimum spark gap
Primary coil resistance
Secondary coil resistance

TIGHTENING TORQUES

ENGINE
△
- marked portion shall be checked for torque tightening after break-in or before each race.
Part to be tightened
Spark plug
Camshaft cap
Cylinder head blind plug screw
Cylinder head (stud bolt)
Cylinder head (bolt)
Cylinder head (bolt)
Cylinder head cover
Cylinder
Timing chain tensioner
Timing chain tensioner cap bolt
Timing chain guide (intake side)
Exhaust pipe (nut)
Exhaust pipe (bolt)
△
Silencer
Silencer clamp
Exhaust pipe protector
Carburetor joint
Carburetor joint clamp
△
Air filter case
Air filter joint clamp
Air filter joint and air filter case
Throttle cable adjust bolt and locknut
Throttle cable (pull)
Item
TIGHTENING TORQUES
Standard
Electrical
2S200/YAMAHA
Ω
720–1,080 at 20 °C (68 °F) (Green–
Brown)
Ω
44–66 at 20 °C (68 °F) (Black–Pink)
Ω
248–372 at 20 °C (68 °F) (White–Red) ----
2S2-B0/YAMAHA (Except for EUROPE)
2S2-C0/YAMAHA (For EUROPE)
5TA-10/DENSO
6 mm (0.24 in)
Ω
0.08–0.10 at 20 °C (68 °F)
Ω
4.6–6.8 k at 20 °C (68 °F)
Thread size Q'ty
M10S × 1.0
M6 × 1.0
M12 × 1.0
M8 × 1.25
M10 × 1.25
M6 × 1.0
M6 × 1.0
M6 × 1.0
M6 × 1.0
M6 × 1.0
M6 × 1.0
M8 × 1.25
M8 × 1.25
M8 × 1.25
M8 × 1.25
M6 × 1.0
M6 × 1.0
M4 × 0.7
M6 × 1.0
M6 × 1.0
M5 × 0.8
M6 × 0.75
M6 × 1.0
2-10
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----
----
----
----
----
----
----
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Tightening torque
Nm m•kg
1 13 1.3
10 10 1.0
1 28 2.8
1 15 1.5
4 Refer to NOTE.
2 10 1.0
2 10 1.0
1 10 1.0
2 10 1.0
1 7 0.7
2 10 1.0
1 20 2.0
1 20 2.0
2 30 3.0
1 14 1.4
3 10 1.0
3 10 1.0
1 3 0.3
2 8 0.8
1 3 0.3
1 4 0.4
1 4 0.4
1 4 0.4
Limit
ft•lb
9.4
7.2
20
11
*1
7.2
7.2
7.2
7.2
5.1
7.2
14
14
22
10
7.2
7.2
2.2
5.8
2.2
2.9
2.9
2.9