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Yamaha YZ450F(Y Owner's Manual: Tightening Torques

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Brake lever and brake pedal:
Brake lever position
Brake pedal height (vertical height above footrest
top)
Clutch lever free play (lever end)
Throttle grip free play
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
Item
Item
TIGHTENING TORQUES
Standard
95 mm (3.74 in)
5 mm (0.20 in)
7–12 mm (0.28–0.47 in)
3–5 mm (0.12–0.20 in)
Standard
Electrical
2S210/YAMAHA
720–1,080 Ωat 20 °C (68 °F) (Green–
Brown)
44–66 Ωat 20 °C (68 °F) (Black–Pink)
248–372 Ωat 20 °C (68 °F) (White–Red)
34P-00/YAMAHA (USA and CDN)
34P-10/YAMAHA (Except for USA and
CDN)
5TA-10/DENSO
6 mm (0.24 in)
0.08–0.10 Ωat 20 °C (68 °F)
4.6–6.8 kΩat 20 °C (68 °F)
Thread size
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
2-10
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Tightening torque
Q'ty
Nm
m•kg
1
13
1.3
10
10
1.0
1
28
2.8
1
15
1.5
4
Refer to TIP.
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
Limit
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

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  • nick Jan 26, 2016 10:47:
    The download is jacked up, so it's only really viewable on the site, but can't really complain since it's free.