Operators Manual
Table Of Contents
- Contents
- 1. Introduction
- 2. Safety Precautions
- 3. Specifications
- 4. Troubleshooting
- 5. Engine
- 6. Rewind Starter
- 7. Control Levers
- 8. Fuel System
- 8.1 Air Filter
- 8.2 Removing and Installing the Carburetor
- 8.3 Leakage Test
- 8.4 Servicing the Carburetor
- 8.5 Adjusting the Carburetor
- 8.6 Removing and Installing Throttle Cable (Loop Handle)
- 8.7 Removing and Installing the Spacer Flange
- 8.8 Tank Vent
- 8.9 Fuel Intake
- 8.10 Removing and Installing the Engine Housing
- 9. Drive Tube
- 10. Special Servicing Tools
- 11. Servicing Aids
4 Series 4144 Components FC, FS, KM
3. Specifications
3.1 Engine
FS 40 FS 50, 56, FC 56, KM 56
Displacement: 27.2 cm
3
27.2 cm
3
Bore: 34 mm 34 mm
Stroke: 30 mm 30 mm
Engine power to ISO 8893: 0.7 kW (1.0 bhp)
at 8,500 rpm
0.8 kW (1.1 bhp)
at 8,500 rpm
Max. permissible speed
(with cutting attachment): 10,000 rpm 10,000 rpm
Idle speed: 2,800 rpm 2,800 rpm
Clutch: Centrifugal clutch without
linings
Centrifugal clutch without
linings
Clutch engages at: 4,200 rpm 4,200 rpm
Crankcase leakage test
at gauge pressure: 0.5 bar
under vacuum: 0.5 bar
3.2 Fuel System
Carburetor leakage test at
gauge pressure:
0.3 bar
Operation of tank vent at
gauge pressure:
0.5 bar
Fuel: as specified in instruction
manual
3.3 Ignition System
Air gap between ignition
module and fanwheel: 0.30 mm
Spark plug (suppressed): NGK CMR6H
NGK 6H
Bosch WSR 6 F
Electrode gap: 0.5 mm