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2-2 Torque value
Notice: For unspecified bolt, screw and nut, refer to the standard torque value
No. Item Specification Performance class
Torque value（N·m ）
1 Cylinder head M8×65 10.9 28±2
2 Crankcase cover M6×30 8.8 10±1
3 Oil drain plug M10×15 8.8 22±2
4 Connecting rod M6×35 10.9 13±1
5 Valve locking nut M5 8 8±1
6 Governor gear M6×16 8.8 10±2
M14 (iron flywheel）
8 78±4
7 Flywheel
M14 (aluminum
flywheel）
8 68±4
8 Spark plug M14×1.25 8.8 28±2
M6×12 8.8
9 Valve cover
M6×80 8.8
10±2
10 Breath groove covering plate M6×12 8.8 10±2
M6×12 8.8
11 Brake
M6×20 8.8
10±2
M6×20 8.8
12 Ignition coil
M6×68 8.8
10±2
13 Stud supporting bolt M6×83 8.8 10±2
14 Lower shell M6×16 8.8 10±2
15 Muffler stud M8×109 8.8 25±2
16 Muffler nut M8 8 25±2
17 Air cleaner M6 8 8±2
18 Throttle control M6×12 8.8 10±2
19 Governor support lock nut M6 8 7±1
20 Recoil starter M6 8 8±2
M6×25 8.8 8±2
21 Fuel tank
M6 8 8±2
22 Engine housing M5×20 8.8 6±2