Yamaha YTZ250S 1986 Service Manual page 138

Tightening torque:
Thread size Nm
m'kg ft 'lb
Remarks
Front axle shaft M14x 1.5 58 5.8 42
Under bracket & inner fork tube M8 x 1.25 20 2.0 14
Front axle & Outer fork tube
M8 x 1.25 20 2.0 14
Front wheel panel & Front hub M8 x 1.25 28 2.8 20
Rear wheel panel & Wheel shaft collar
M10x 1.25 45 4.5
32
Steering crown & inner fork tube M10x 1.25 40 4.0 29
Steering stem
M22x 1.0 85 8.5 61
Steering shaft ring nut M25x 1.0 45 4.5 32
Handlebar upper holder
M8 x 1.25 23 2.3 17
Engine front bracket & Engine M8 x 1.25 30
3.0
22
Engine front bracket & Frame
M8 x 1.25 30 3.0 22
Upper engine bracket & Engine M8 x 1.25
55
5.5 40
Upper engine bracket & Frame
M8 x 1.25 30 3.0
22
Lower engine mounting bolt M8 x 1.25 30 3.0 22
Frame & Rear shock absorber M10x 1.25 32 3.2 23
Relay arm & Rear shock absorber M10x 1.25 32 3.2 23
Relay arm & Frame M10x 1.25 48 4.8 35
Swing arm & Connecting rod M10x 1.25 48 4.8 35
Relay arm & Connecting rod
M10x 1.25 32
3.2
23
Disc brake (Front & Rear) M8 x 1.25 28 2.8 20
Brake carliper (Front & Rear) M10x 1.25 35 3.5 25
Brake hose union bolt M10x 1.25 27 2.7 19
Engine rear & Frame (Pivot shaft) M16x 1.50 85
8.5
61
Rear axle shaft & Wheel shaft collar M14x1 .50 100 10.0 72
Rear axle shaft ring nut M33x 1.50
133 13.3 98
Driven sprocket M8 x 1.25 30 3.0 22 Use lock washer
Rear hub & Swing arm (Upper)
M10x 1.25 50 5.0 36
Rear hub & Swing arm (Lower) M12 x 1.25
80
8.0
58
Footrest bracket & Frame M10x 1.25 55
5.5 40
6-14