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Technical Data
Engine 1 cylinder 4 stroke with balance shaft
Cooling
Water cooled, water pump in engine block
integrated
Engine casing Gravity die cast Aluminium
Cylinder Gravity die cast Aluminium with Nicasil coating
Bore / Stroke 75 / 56.5 mm
Displacement 249.6 ccm
Power
35 / 39 HP at 10'000 1/min with 30 / 34 mm
carburetor
Cylinder head 4 valves per cylinder, DOHC on roller bearings
Crankshaft Steel, forged, roller bearings
Piston Aluminium forged
Connecting rod Steel, forged, mounted on roller bearings
Lubricating system Integrated dry sump with diaphragm pump
Ignition Digital battery ignition with rpm limiter
Carburetor Dell'Orto D = 30 mm / 34 mm
Fuel pump Vacuum pump integrated into the engine casing
Transmission
Gearless drive with centrifugal clutch and chain
drive
Dimensions L/W/H = 410/190/330 mm
Weight 15 kg incl. starter
Spark plug gap 0.6 mm
Distance generator
stator
1.2 mm to magnets
2
Scope of Supply
● engine ‚swissauto 250’ with clutch, ignition and fuel pump
● radiator
● radiator support with silent blocks, bolts and nuts
● 2 cooler hoses
● 3 hose clamps 27.1
● 1 hose clamp 28.6
● carburetor
● carburetor rubber
● 2 hose clamps for carburetor rubber
● air filter flange
● air filter incl. clamp
● crankcase ventilation hose with ventilation tube 90°
● ignition coil with spark plug boot
● battery box with battery, relay and cabling
● control unit
● 3 pipe clamps with bolts and nuts
● primary tube with gasket and nuts
● exhaust silencer
● 2 silencer springs
● throttle cable (inner wire and sleeve)
● clamp for throttle cable
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