Yamaha YZ450F(W) Owner's Service Manual page 83

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Part to be tightened
Crankcase cover (right)
Crankcase cover (left)
Crankcase
Clutch cable holder
Oil drain bolt (crankcase right)
(crankcase left)
Oil check bolt (crankcase)
Oil strainer
Crankcase bearing stopper
Crankcase bearing stopper
Drive axle oil seal stopper
Ratchet wheel guide
Kick starter
Screw (kick starter)
Primary drive gear
Clutch boss
Clutch cable adjust bolt and locknut
Clutch spring
Balancer
Balancer driven gear
Balancer weight plate
Drive sprocket
Drive sprocket cover
Shift pedal
Shift guide
Stopper lever
Segment
NOTE:
- marked portion shall be checked for torque tightening after break-in or before each race.
NOTE:
*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.
MAINTENANCE SPECIFICATIONS
Thread size
2 - 12
Q'ty
M6 × 1.0
8
M6 × 1.0
2
M6 × 1.0
8
M6 × 1.0
12
M6 × 1.0
2
M10 × 1.25
1
M8 × 1.25
1
M6 × 1.0
1
M6 × 1.0
1
M6 × 1.0
4
M6 × 1.0
8
M6 × 1.0
2
M6 × 1.0
2
M8 × 1.25
1
M6 × 1.0
1
M20 × 1.0
1
M20 × 1.0
1
M6 × 0.75
1
M6 × 1.0
6
M10 × 1.0
1
M14 × 1.0
1
M6 × 1.0
3
M20 × 1.0
1
M6 × 1.0
2
M6 × 1.0
1
M6 × 1.0
2
M6 × 1.0
1
M8 × 1.25
1
SPEC
Tightening torque
Nm
m·kg
ft·lb
10
1.0
7.2
12
1.2
8.7
10
1.0
7.2
12
1.2
8.7
10
1.0
7.2
20
2.0
14
20
2.0
14
10
1.0
7.2
10
1.0
7.2
14
1.4
10
10
1.0
7.2
10
1.0
7.2
12
1.2
8.7
33
3.3
24
7
0.7
5.1
110
11.0
80
75
7.5
54
4
0.4
2.9
10
1.0
7.2
45
4.5
32
50
5.0
36
10
1.0
7.2
75
7.5
54
8
0.8
5.8
12
1.2
8.7
10
1.0
7.2
10
1.0
7.2
30
3.0
22

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This manual is also suitable for:

Yz450f 2007Yz450f w 2007Yz450f 2006Yz450fw 2006

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