SPEC
2 - 12
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.
Engine oil drain bolt (oil filter)
M6
×
1.0
1
10
1.0
7.2
Oil filter cover
M6
×
1.0
2
10
1.0
7.2
Oil check bolt (cylinder head)
M6
×
1.0
1
10
1.0
7.2
Oil hose clamp
—
2
2
0.2
1.4
Clutch cover
M6
×
1.0
7
10
1.0
7.2
Crankcase cover (right)
M6
×
1.0
8
10
1.0
7.2
M6
×
1.0
2
12
1.2
8.7
Crankcase cover (left)
M6
×
1.0
8
10
1.0
7.2
Idle gear cover (starter motor)
M6
×
1.0
2
10
1.0
7.2
Crankcase
M6
×
1.0
12
12
1.2
8.7
Clutch cable holder
M6
×
1.0
1
10
1.0
7.2
Oil drain bolt (crankcase right)
M10
×
1.25
1
20
2.0
14
(crankcase left)
M6
×
1.0
1
20
2.0
14
Oil check bolt (crankcase)
M6
×
1.0
1
10
1.0
7.2
Oil strainer
M6
×
1.0
1
10
1.0
7.2
Crankcase bearing stopper
M6
×
1.0
4
14
1.4
10
Crankcase bearing stopper
M6
×
1.0
8
10
1.0
7.2
Drive axle oil seal stopper
M6
×
1.0
2
10
1.0
7.2
Ratchet wheel guide
M6
×
1.0
2
12
1.2
8.7
Kickstarter
M8
×
1.25
1
33
3.3
24
Screw (kickstarter)
M6
×
1.0
1
7
0.7
5.1
Starter clutch
M6
×
1.0
6
16
1.6
11
Primary drive gear
M20
×
1.0
1
110
11.0
80
Clutch boss
M20
×
1.0
1
75
7.5
54
Clutch cable adjust bolt and locknut
M8
×
1.0
1
4
0.4
2.9
Clutch spring
M6
×
1.0
6
10
1.0
7.2
Balancer
M10
×
1.0
1
45
4.5
32
Balancer driven gear
M14
×
1.0
1
50
5.0
36
Balancer weight plate
M6
×
1.0
3
10
1.0
7.2
Drive sprocket
M20
×
1.0
1
75
7.5
54
Drive sprocket cover
M6
×
1.0
2
8
0.8
5.8
Shift pedal
M6
×
1.0
1
12
1.2
8.7
Shift guide
M6
×
1.0
2
10
1.0
7.2
Stopper lever
M6
×
1.0
1
10
1.0
7.2
Segment
M8
×
1.25
1
30
3.0
22
Part to be tightened
Thread size
Q’ty
Tightening torque
Nm
m·kg
ft·lb
MAINTENANCE SPECIFICATIONS
Summary of Contents for WR450F
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