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TECHNICAL DATA
Engine
Engine type:
4-gear model: FY139FMB Automatic model: FY139FMB-B
Design:
Single cylinder 4-stroke petrol engine
Valve control:
1 overhead cam with rocker arms
Valves:
2 valves
Valve clearance, cold:
exhaust 0.05 mm - 0.08 mm
Displacement:
49.5 cm
3
Bore:
ø 39 mm
Stroke:
41.4 mm
Compression ratio:
10:1
Lubrication system:
Oil circulation lubrication
Cooling:
Air cooled
Rated power:
2.0 kW at 7.000 rpm
Rated torque:
3.2 Nm at 4.300 rpm
Ignition system:
Transistorized ignition system with electronic ignition control (CDI)
Spark plug:
NGK CR7 HSA electrode gap 0.7- 0.8 mm
Carburettor:
Mikuni constant vacuum carburettor type VM 12 101 6
Air-fi lter:
Dry air fi lter
Idle speed:
1.800 +/- 200 rpm
Typ of starter:
Electric starter / kick starter