Yamaha YFM660RN Service Manual page 38

Tightening torques
Part to be tightened
Engine bracket (upper) and frame
Engine bracket (upper) and engine
Engine bracket (lower) and frame
Engine bracket (lower) and engine
Engine bracket (middle and lower) and engine
Swingarm pivot shaft, engine and frame
Rear shock absorber and frame
Relay arm and swingarm
Connecting arm and frame
Relay arm and rear shock absorber
Relay arm and connecting arm
Drive chain guide and swingarm
Hub, brake caliper bracket and swingarm
Drive chain adjusting bolt and locknut
Front shock absorber and frame
Front shock absorber and front arm (lower)
Front arm (upper) and frame
Front arm (lower) and frame
Brake hose holder and front arm (upper)
Steering stem, pitman arm and frame
Steering stem bushing and frame
Steering stem and handlebar holder
Tie-rod end and locknut
Steering knuckle and front wheel hub
Steering knuckle and front arm (upper and lower)
Steering knuckle and tie-rod ball joint
Pitman arm and tie-rod ball joint
Frame and bearing retainer
Fuel tank and fuel cock
Fuel tank and frame
Front wheel and front wheel hub
Steering knuckle and front brake caliper
Front brake disc and front wheel hub
Rear axle and rear wheel hub
Rear brake caliper and brake caliper bracket
Rear wheel and rear wheel hub
Driven sprocket and sprocket bracket
Front brake pipe nut
Front brake master cylinder and handlebar
MAINTENANCE SPECIFICATIONS
Thread size
2 - 16
Tightening torque
Nm m·kg
M8 33 3.3
M10 40 4.0
M10 56 5.6
M10 56 5.6
M10 56 5.6
M16 95 9.5
M10 32 3.2
M10 32 3.2
M10 32 3.2
M10 32 3.2
M10 32 3.2
M6 7 0.7
M12 90 9.0
M8 16 1.6
M10 45 4.5
M10 45 4.5
M10 38 3.8
M10 32 3.2
M6 7 0.7
M14 110 11
M8 23 2.3
M8 23 2.3
M10 15 1.5
M14 70 7.0
M10 25 2.5
M10 25 2.5
M10 25 2.5
M42 40 4.0
M6 4 0.4
M6 7 0.7
M10 45 4.5
M8 28 2.8
M8 28 2.8
M14 120 12
M8 28 2.8
M10 45 4.5
M8 24 2.4
M10 19 1.9
M6 7 0.7
SPEC
Remarks
ft·lb
24
29
40
40
40
68
23
23
23
23
23
5.1
65
11
32
32
27
23
5.1
80
17 Use a lock
washer.
17
11
50
18
18
18
29
2.9
5.1
32
20
20
LT
85
20
32
17
13
5.1