Yamaha YZ450FT Owner's Service Manual page 51

Part to be tightened
Rear wheel axle and nut
Driven sprocket and wheel hub
Nipple (spoke)
Disc cover and rear brake caliper
Protector and rear brake caliper
Chain puller adjust bolt and locknut
Engine mounting:
Engine upper bracket and frame
Engine lower bracket and frame
Engine and engine bracket (front)
Engine and engine bracket (upper)
Engine and frame (lower)
Engine guard (lower)
Engine skid plate mounting
CDI unit bracket mounting
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 and frame (upper)
Rear frame and frame (lower)
Swingarm and brake hose holder
Swingarm and patch
Drive chain tensioner mounting (upper)
Drive chain tensioner mounting (lower)
Chain support and swingarm
Seal guard and swingarm
Fuel tank mounting
Fuel tank and fuel cock
Fuel tank and seat set bracket
Fuel tank and hooking screw (fitting band)
Fuel tank and fuel tank bracket
Seat mounting
Side cover mounting
Air scoop and fuel tank
Air scoop and radiator panel (lower)
Front fender mounting
Rear fender mounting (front)
Rear fender mounting (rear)
Number plate
NOTE:
- marked portion shall be checked for torque tightening after break-in or before each race.
MAINTENANCE SPECIFICATIONS
Thread size
M20 × 1.5
M8 × 1.25
—
M6 × 1.0
M6 × 1.0
M8 × 1.25
M10 × 1.25
M8 × 1.25
M10 × 1.25
M10 × 1.25
M10 × 1.25
M8 × 1.25
M6 × 1.0
M6 × 1.0
M16 × 1.5
M14 × 1.5
M14 × 1.5
M14 × 1.5
M10 × 1.25
M10 × 1.25
M8 × 1.25
M8 × 1.25
M5 × 0.8
M4 × 0.7
M8 × 1.25
M8 × 1.25
M6 × 1.0
M5 × 0.8
M6 × 1.0
M6 × 1.0
M6 × 1.0
M6 × 1.0
M6 × 1.0
M8 × 1.25
M6 × 1.0
M6 × 1.0
M6 × 1.0
M6 × 1.0
M6 × 1.0
M6 × 1.0
M6 × 1.0
2 - 16
SPEC
Tightening torque
Q'ty
Nm m·kg
1 125 12.5
6 42 4.2
72 3 0.3
2 7 0.7
2 7 0.7
2 16 1.6
2 55 5.5
4 34 3.4
1 69 6.9
1 55 5.5
1 69 6.9
1 34 3.4
6 10 1.0
1 10 1.0
1 85 8.5
1 80 8.0
1 80 8.0
1 80 8.0
1 56 5.6
1 53 5.3
1 32 3.2
2 29 2.9
4 1 0.1
4 2 0.2
1 19 1.9
1 20 2.0
3 7 0.7
4 6 0.6
2 10 1.0
2 7 0.7
1 7 0.7
1 7 0.7
4 7 0.7
2 23 2.3
2 7 0.7
6 7 0.7
2 6 0.6
4 7 0.7
2 7 0.7
2 12 1.2
1 7 0.7
ft·lb
90
30
2.2
5.1
5.1
11
40
24
50
40
50
24
7.2
7.2
61
58
58
58
40
38
23
21
0.7
1.4
13
14
5.1
4.3
7.2
5.1
5.1
5.1
5.1
17
5.1
5.1
4.3
5.1
5.1
8.7
5.1