Yamaha YZ250F(W) Owner's Service Manual page 84

Part to be tightened
Air filter case
Air filter joint and air filter case
Air filter element
Exhaust pipe
Exhaust pipe protector
Silencer
Silencer clamp
Crankcase
Crankcase bearing stopper
Crankcase bearing stopper (crankshaft)
Oil level check window holder
Left crankcase cover
Right crankcase cover
Clutch cover
Crankcase oil drain bolt
Drive chain sprocket cover
Kick shaft ratchet wheel guide
Kickstarter crank
Primary drive gear
Clutch spring
Clutch boss
Clutch cable locknut
Clutch cable adjust bolt and locknut
Push lever shaft
Drive sprocket
Drive axle oil seal stopper
Segment
Shift guide
Stopper lever
Shift pedal
NOTE:
- marked portion shall be checked for torque tightening after break-in or before each race.
MAINTENANCE SPECIFICATIONS
Thread size
2 - 11
Q'ty
M6 × 1.0
2
M5 × 0.8
1
M6 × 1.0
1
M8 × 1.25
2
M6 × 1.0
3
M8 × 1.25
2
M8 × 1.25
1
M6 × 1.0
11
M6 × 1.0
11
M6 × 1.0
4
M6 × 1.0
1
M6 × 1.0
8
M6 × 1.0
8
M6 × 1.0
7
M10 × 1.25
1
M6 × 1.0
2
M6 × 1.0
2
M8 × 1.25
1
M18 × 1.0
1
M6 × 1.0
5
M16 × 1.0
1
M8 × 1.25
1
M6 × 0.75
1
M6 × 1.0
1
M18 × 1.0
1
M6 × 1.0
2
M8 × 1.25
1
M6 × 1.0
2
M6 × 1.0
1
M6 × 1.0
1
SPEC
Tightening torque
Nm m·kg ft·lb
8 0.8 5.8
4 0.4 2.9
2 0.2 1.4
20 2.0 14
10 1.0 7.2
30 3.0 22
16 1.6 11
12 1.2 8.7
10 1.0 7.2
10 1.0 7.2
10 1.0 7.2
10 1.0 7.2
10 1.0 7.2
10 1.0 7.2
20 2.0 14
8 0.8 5.8
12 1.2 8.7
33 3.3 24
75 7.5 54
10 1.0 7.2
60 6.0 43
7 0.7 5.1
4 0.4 2.9
10 1.0 7.2
75 7.5 54
10 1.0 7.2
30 3.0 22
10 1.0 7.2
10 1.0 7.2
12 1.2 8.7