1-3 Torque limits
Descriptions Size kgf•cm N•m in•lbf
Starter
system
Starter pawl M5* 60 - 100 6 - 10 50 - 90
Starter case M5 30 - 50 3 - 5 25 - 45
Brake lever side M5* 70 - 90 7 - 9 60 - 80
Ignition
system
Magneto rotor (Flywheel) M8 160 - 200 16 - 20 140 - 175
Ignition coil M5 35 - 50 3.5 - 5 30 - 45
Spark plug M14 130 - 170 13 - 17 113 - 150
Fuel
system
Carburettor M5 30 - 40 3 - 4 25 - 35
Intake bellows M5 75 - 95 7.5 - 9.5 65 - 85
Clutch Clutch hub LM10 300 - 400 30 - 40 265 - 350
Cylinder cover Fan cover side M6 15 - 25 1.5 - 2.5 13 - 22
Recoil side M5 15 - 30 1.5 - 3 13 - 25
Engine Crankcase M5
†
60-90 6-9 50-80
Cylinder M5
†
60-100 6-10 50-90
Cylinder cover M5 60 - 90 6 - 9 50 - 80
Muffl er M5* 70-110 7-11 60-95
Muffl er plate M4 15 - 25 1.5 - 2.5 13 - 22
Exhaust gasket M5 70 - 110 7 - 11 60 - 95
Other Auto-oiler M4 30 - 50 3 - 5 25 - 45
Compression spring
Engine M5 30 - 45 3 - 4.5 25 - 40
Crankcase M5 60 - 80 6 - 8 50 - 70
Front handle M5 60 - 90 6 - 9 50 - 80
Front handle M6 40 - 55 4 - 5.5 35 - 48
M5 40-60 4-6 35-50
Rear handle M5 40 - 60 4 - 6 35 - 50
Brake lever M5 60 - 90 6 - 9 50 - 80
Brake cover M5* 40 - 60 4 - 6 35 - 50
Sprocket guard plate M4* 15 - 25 1.5 - 2.5 13 - 22
Spring holder M5 30 - 45 3 - 4.5 25 - 40
Spike M5 60 - 90 6 - 9 50 - 80
Ignition switch M10 15 - 30 1.5 - 3 13 - 25
Guide bar M5 200 - 230 20 - 23 175 - 200
Regular bolt, nut and screw M3 6 - 10 0.6 - 1 5 - 9
M4 15 - 25 1.5 - 2.5 13 - 22
M5 25 - 45 2.5 - 4.5 22 - 40
M6 45 - 75 4.5 - 7.5 40 - 65
M8 110 - 150 11 - 15 95 - 130
LM: Left-hand thread
*Thread locking sealant (See next page)
†
The torque difference between four bolts should not exceed 20 kgf•cm (2N•m, 17in•lbf) per bolt.
SERVICE INFORMATION CS-550
4
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