Yamaha YZ250F(X) Owner's Service Manual page 32

CHASSIS
△
- marked portion shall be checked for torque tightening after break-in or before each race.
Part to be tightened
△
Upper bracket and outer tube
△
Lower bracket and outer tube
△
Upper bracket and steering stem
△
Handlebar upper holder and handlebar lower holder
△
Handlebar lower holder and upper bracket
△
Steering stem and steering ring nut
Front fork and damper assembly
Front fork and adjuster
Damper assembly and base valve
Adjuster and damper assembly
Front fork bleed screw and base valve
△
Front fork and front fork protector
△
Lower bracket and brake hose guide
△
Front fork protector and brake hose holder
Throttle grip cap
△
Front brake master cylinder
Brake lever mounting bolt
Brake lever mounting nut
Brake lever position locknut
Clutch lever holder
Clutch lever mounting nut
Hot starter lever holder
Front brake master cylinder cap
△
Front brake hose union bolt
△
Front brake caliper
Pad pin plug
△
Front brake caliper and pad pin
△
Rear brake caliper and pad pin
△
Brake caliper and bleed screw
△
Front wheel axle and axle nut
△
Front wheel axle holder
△
Front brake disc
△
Rear brake disc
△
Footrest bracket and frame
△
Brake pedal
△
Rear brake master cylinder
Rear brake master cylinder cap
△
Rear brake hose union bolt
△
Rear wheel axle and axle nut
△
Nipple (spoke)
△
Rear wheel sprocket
TIGHTENING TORQUES
Thread size Q'ty
M8 × 1.25
M8 × 1.25
M24 × 1.0
M8 × 1.25
M10 × 1.25
M28 × 1.0
M51 × 1.5
M22 × 1.25
M42 × 1.5
M12 × 1.25
M5 × 0.8
M6 × 1.0
M6 × 1.0
M6 × 1.0
M5 × 0.8
M6 × 1.0
M6 × 1.0
M6 × 1.0
M6 × 1.0
M5 × 0.8
M6 × 1.0
M5 × 0.8
M4 × 0.7
M10 × 1.25
M8 × 1.25
M10 × 1.0
M10 × 1.0
M10 × 1.0
M8 × 1.25
M16 × 1.5
M8 × 1.25
M6 × 1.0
M6 × 1.0
M10 × 1.25
M8 × 1.25
M6 × 1.0
M4 × 0.7
M10 × 1.25
M20 × 1.5
—
M8 × 1.25
2-12
Tightening torque
Nm m•kg
4 21 2.1
4 21 2.1
1 145 14.5
4 28 2.8
2 34 3.4
1 Refer to NOTE.
2 30 3.0
2 55 5.5
2 29 2.9
2 29 2.9
2 1 0.1
6 5 0.5
1 4 0.4
2 7 0.7
2 4 0.4
2 9 0.9
1 6 0.6
1 6 0.6
1 5 0.5
2 4 0.4
1 4 0.4
2 4 0.4
2 2 0.2
2 30 3.0
2 28 2.8
2 3 0.3
1 18 1.8
1 18 1.8
2 6 0.6
1 105 10.5
4 21 2.1
6 12 1.2
6 14 1.4
4 55 5.5
1 26 2.6
2 10 1.0
2 2 0.2
2 30 3.0
1 125 12.5
72 3 0.3
6 42 4.2
ft•lb
15
15
105
20
25
22
40
21
21
0.7
3.6
2.9
5.1
2.9
6.5
4.3
4.3
3.6
2.9
2.9
2.9
1.4
22
20
2.2
13
13
4.3
75
15
8.7
10
40
19
7.2
1.4
22
90
2.2
30