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A5 engine data sheet

Engine versions: 49/40/25 km/h

Additional equipment: pre-mix pump, catalyzed exhaust, pedals

Basic technical specifications (49 km/h version)

Engine: single cylinder, two stroke, air cooled

Bore x stroke: 38 x 43 mm

Piston displacement: 49 cc

Compression ratio: 9.1:1

Power output: 1.8 kW/5200 min^-1

Torque: 3.7 Nm/4000 min^-1

Carburetor: Dell'orto SHA 14-12 P w. reed valve

Gearbox: 2-speed automatic with two centrifugal clutches

Gearbox oil/quantity: ATF Dextron III/220 cc

Transmission ratios:

Gear ratio 1 ^st speed	(66/17)	i = 3.8823
Gear ratio 2 ^nd speed	(53/24)	i = 2.2083
Gearbox ratio 1 ^st speed	(3.88 * 72/11)	i = 25.4117
Gearbox ratio 2 ^nd speed	(2.20 * 72/11)	i = 14.4545
Chain transmission ratio	(24/26)	i = 0.9230
Total transmission ratio 1 ^st speed	(25.41 * 24/26)	i = 23.4570
Total transmission ratio 2 ^nd speed	(14.45 * 24/26)	i = 13.3426

Ignition: electronic 12V/80W (12V/50W)

Spark plug: Bosch W 4A2/Champion L82/NGK HS

Spark plug gap: 0.5 mm

Mixture: gasoline and two stroke oil (2%)

Consumption: 1.8 l/100 km

Starting: kick starter

	Transmission ratios
	Transmission assembly
	Thermal unit
	Carburetor