Yamaha YZ250 Handbuch Seite 72

Part to be tightened
Spark plug
Cylinder head (nut)
(stud)
Cylinder (nut)
(stud)
Power valve :
Holder
Link rod
Push rod
Thrust plate
Side holder
Link lever
Pulley
Cover
Governor fork
Housing
Impeller
Water pump housing cover
Coolant drain bolt
Radiator
Radiator panel
Radiator hose clamp
Air filter element
Carburetor joint
Air filter case
L L
Air filter guide clamp
Reed valve
Throttle cable adjust bolt and locknut
Throttle cable
Exhaust pipe (front)
L L
Exhaust pipe (rear)
L L
Exhaust pipe stay (front)
L L
Exhaust pipe stay (rear)
L L
Silencer:
Silencer and fram
L L
Fiber (For USA and CDN)
Fiber (Except for USA and CDN)
Crankcase
Crankcase cover (left)
Chain cover
Crankcase cover (right)
Bearing plate cover (drive axle left)
Bearing plate cover (main axle right)
Holder
Oil drain bolt
Oil check bolt
MAINTENANCE SPECIFICATIONS
Thread size
M14S × 1.25
M 8 × 1.25
M 8 × 1.25
M10 × 1.25
M10 × 1.25
M 5 × 0.8
M 5 × 0.8
M 5 × 0.8
M 5 × 0.8
M 5 × 0.8
M 4 × 0.7
M 4 × 0.7
M 5 × 0.8
M 4 × 0.7
M 5 × 0.8
M 8 × 1.25
M 6 × 1.0
M 6 × 1.0
M 6 × 1.0
M 6 × 1.0
M 6 × 1.0
M 6 × 1.0
M 6 × 1.0
M 6 × 1.0
M 5 × 0.8
M 3 × 0.5
M 8 × 1.25
M 6 × 0.75
M 6 × 1.0
M 6 × 1.0
M 8 × 1.25
M 6 × 1.0
M 6 × 1.0
M 6 × 1.0
M 6 × 1.0
M 6 × 1.0
M 6 × 1.0
M 6 × 1.0
M 6 × 1.0
M 6 × 1.0
M 6 × 1.0
M 6 × 1.0
M12 × 1.5
M 6 × 1.0
2-5
SPEC
Tightening torque
Q'ty
Nm m•kg
1 20 2.0
6 25 2.5
6 13 1.3
4 42 4.2
4 13 1.3
2 6 0.6
2 6 0.6
1 5 0.5
1 6 0.6
4 4 0.4
1 4 0.4
2 4 0.4
4 4 0.4
2 5 0.5
4 5 0.5
1 14 1.4
4 10 1.0
1 10 1.0
6 10 1.0
2 10 1.0
8 2 0.2
1 2 0.2
5 10 1.0
4 8 0.8
1 1 0.1
4 1 0.1
1 7 0.7
1 4 0.4
1 14 1.4
1 12 1.2
1 25 2.5
1 12 1.2
2 12 1.2
2 10 1.0
4 10 1.0
11 14 1.4
5 5 0.5
2 5 0.5
9 10 1.0
2 10 1.0
2 10 1.0
2 10 1.0
1 23 2.3
1 10 1.0
ft•lb
14
18
9.4
30
9.4
4.3
4.3
3.6
4.3
2.9
2.9
2.9
2.9
3.6
3.6
10
7.2
7.2
7.2
7.2
1.4
1.4
7.2
5.8
0.7
0.7
5.1
2.9
10
8.7
18
8.7
8.7
7.2
7.2
10
3.6
3.6
7.2
7.2
7.2
7.2
17
7.2