Adler M 250 S 1953

Air cooled, 247cc, Inline-2, 2-stroke, Piston controlled inlet port

Engine and transmission Switch unit
Engine type:	2 cylinders, 2-stroke, Inline
Displacement:	247 cc (15.09 cubic inches)
Bore × stroke:	2.13 inch × 2.13 inch (square)
Cooling system:	Air cooled
Power:	16.04 HP (11.8 kW) @ 5590 rpm
Throttle:	Cable operated
Valves
Valve train:	Piston controlled inlet port, variable
Fuel and ignition
Sparks per cylinder:	1
Fuel supply system:	Carburetor
Ignition type:	Magneto
Compression:	5.8:1
Engine mounting:	Transverse
Lubrication system:	Mixture
Gear box:	Manual 4-speed
Clutch:	Wet, cable operated
Final drive:	Chain
Starter:	Kick-starter

Dimensions
Weight
Dry weight:	297.6 lbs
Chassis and suspension
Frame type:	steel, Double cradle frame
Front
Suspension:	Cartridge
Brake:	Single Drum, Ø7.09 inch
Rear
Suspension:	twin shock, Plunger suspension
Brake:	Drum, Ø7.09 inch
Other
ABS available:	No
Top speed:	72.08 mph
Fuel capacity:	3.17 gals
Number of riders:	1 person

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