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2-7
SPEC
E
TIGHTENING TORQUES
TIGHTENING TORQUES
SPECIFIED TORQUES
Part to tightened Part name
Thread
size
Q’ty
Tightening torque
Remarks
N•m kgf•m ft•lb
ENGINE UNIT
Engine unit – engine mount Bolt M8 4 17 1.7 12
572
LT
Exhaust chamber
assembly – muffler stay 1
– muffler stay 3
1st
Bolt M10 2
2 0.2 1.4
271
LT
4th 51 5.1 37
2nd
Bolt M10 4
2 0.2 1.4
6th 39 3.9 28
3rd
Nut M10 2
2 0.2 1.4
5th 51 5.1 37
7th
Bolt M10 1
2 0.2 1.4
9th 49 4.9 35
8th
Bolt M10 1
2 0.2 1.4
10th 49 4.9 35
Exhaust chamber –
muffler
1st
Nut M8 2
15 1.5 11
271
LT
2nd 39 3.9 28
1st
Bolt M8 3
15 1.5 11
2nd 33 3.3 24
1st
Nut M10 1
15 1.5 11
2nd 51 5.1 37
Exhaust chamber joint –
exhaust manifold
1st
Bolt M8 5
17 1.7 12
271
LT
2nd 34 3.4 24
Exhaust chamber joint –
muffler stay
1st
Bolt M10 1
2 0.2 1.4
271
LT
3rd 49 4.9 35
2nd
Bolt M8 2
2 0.2 1.4
271
LT
4th 37 3.7 27
Exhaust manifold –
cylinder
1st
Bolt M10 8
23 2.3 17
271
LT
2nd 51 5.1 37
Reed valve – reed valve seat Screw M3 16 0.8 0.08 0.58
242
LT
YPVS cable bracket – YPVS cover
– cylinder
Bolt M6 2 10 1.0 7.2
572
LT
YPVS cover – cylinder Bolt M6 6 10 1.0 7.2
572
LT
YPVS valve assembly – cylinder Bolt M5 2 4 0.4 2.9
271
LT
YPVS valve lever – shaft Bolt M4 2 3 0.3 2.2
242
LT
Spark plug – cylinder head Spark plug M14 2 25 2.5 18
Cylinder head – cylinder
1st
Bolt M8 10
15 1.5 11
572
LT
2nd 37 3.7 27
Cylinder – crankcase
1st
Bolt M10 8
22 2.2 16
572
LT
2nd 39 3.9 28
Starter motor lead – starter
motor
Nut M6 1 5 0.5 3.6
Flywheel magneto – crankshaft
assembly
Bolt M10 1 74 7.4 53
E
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