Yamaha YZ250F(S) Owner's Service Manual page 88

Part to be tightened
Nipple (spoke)
Rear wheel sprocket
Rear brake disc cover
Rear brake caliper protector
Drive chain puller adjust bolt and locknut
Engine mounting:
Engine and engine bracket (front)
Engine and frame (lower)
Upper engine bracket and frame
Lower engine bracket and frame
Engine and engine bracket (upper)
Lower engine guard
Right engine guard
CDI unit bracket
Pivot shaft and nut
Relay arm and swingarm
Relay arm and connecting rod
Connecting rod and frame
Rear shock absorber and frame
Rear shock absorber and relay arm
Rear frame (upper)
Rear frame (lower)
Swingarm and brake hose holder
Swingarm and patch
Upper drive chain tensioner
Lower drive chain tensioner
Drive chain support
Seal guard and swingarm
Fuel tank
Fuel cock
Seat set bracket and fuel tank
Hooking screw (fitting band) and fuel tank
Fuel tank bracket and fuel tank
Air scoop and fuel tank
Air scoop and radiator guard (lower)
Front fender
Rear fender (front)
Rear fender (rear)
Side cover
Seat
Number plate
NOTE:
- marked portion shall be checked for torque tightening after break-in or before each race.
MAINTENANCE SPECIFICATIONS
Thread size
2 - 15
Q'ty
— 72
M8 × 1.25
6
M6 × 1.0
2
M6 × 1.0
2
M8 × 1.25
2
M10 × 1.25
1
M10 × 1.25
1
M8 × 1.25
2
M8 × 1.25
4
M10 × 1.25
1
M6 × 1.0
3
M8 × 1.25
2
M6 × 1.0
1
M16 × 1.5
1
M14 × 1.5
1
M14 × 1.5
1
M14 × 1.5
1
M10 × 1.25
1
M10 × 1.25
1
M8 × 1.25
1
M8 × 1.25
2
M5 × 0.8
4
M4 × 0.7
4
M8 × 1.25
1
M8 × 1.25
1
M6 × 1.0
3
M5 × 0.8
4
M6 × 1.0
2
M6 × 1.0
2
M6 × 1.0
1
M6 × 1.0
1
M6 × 1.0
4
M6 × 1.0
6
M6 × 1.0
2
M6 × 1.0
4
M6 × 1.0
2
M6 × 1.0
2
M6 × 1.0
2
M8 × 1.25
2
M6 × 1.0
1
SPEC
Tightening torque
Nm m·kg ft·lb
3 0.3 2.2
42 4.2 30
7 0.7 5.1
7 0.7 5.1
16 1.6 11
69 6.9 50
69 6.9 50
44 4.4 32
34 3.4 24
55 5.5 40
10 1.0 7.2
23 2.3 17
10 1.0 7.2
85 8.5 61
80 8.0 58
80 8.0 58
80 8.0 58
56 5.6 40
53 5.3 38
32 3.2 23
29 2.9 21
1 0.1 0.7
2 0.2 1.4
19 1.9 13
20 2.0 14
7 0.7 5.1
6 0.6 4.3
10 1.0 7.2
7 0.7 5.1
7 0.7 5.1
7 0.7 5.1
7 0.7 5.1
6 0.6 4.3
6 0.6 4.3
7 0.7 5.1
7 0.7 5.1
12 1.2 8.7
7 0.7 5.1
23 2.3 17
7 0.7 5.1