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MAINTENANCE SPECIFICATIONS (WR400F)
Part to be tightened
Oil drain bolt (crankcase)
Oil drain bolt (frame)
Oil strainer (frame)
Crankcase bearing stopper
Drive axle oil seal stopper
Ratchet wheel guide
Kick crank
Primary drive gear
Clutch boss
Clutch spring
Balancer driven gear
Balancer weight plate
Drive sprocket
Shift guide
Stopper lever
Segment
Neutral switch
NOTE:
- marked portion shall be checked for torque tightening after break-in or before each race.
Thread size
Q'ty
M12 × 1.5
1
M8 × 1.25
1
M18 × 1.5
1
M6 × 1.0
15
M6 × 1.0
2
M6 × 1.0
2
M8 × 1.25
1
M20 × 1.0
1
M20 × 1.0
1
M6 × 1.0
5
M14 × 1.0
1
M6 × 1.0
3
M20 × 1.0
1
M6 × 1.0
2
M6 × 1.0
1
M8 × 1.25
1
M5 × 0.8
2
2 - 29
SPEC
Tightening torque
Nm
m·kg
ft·lb
20
2.0
1.4
23
2.3
17
90
9.0
65
10
1.0
7.2
10
1.0
7.2
12
1.2
8.7
33
3.3
24
75
7.5
54
75
7.5
54
8
0.8
5.8
50
5.0
36
10
1.0
7.2
75
7.5
54
10
1.0
7.2
10
1.0
7.2
30
3.0
22
4
0.4
2.9
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