Donghai SM750: history, specs, pictures

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Donghai SM750
Also called SM 750, SM750 (with sidecar), SM 750 (with sidecar)
Production 1987 - 1990
twin, four-stroke
Bore / Stroke 78.0mm x 78.0mm
Top Speed 74 mph (119 km/h)
Horsepower 25.48 HP (19.0 KW) @ 4500RPM
Transmission Gear box: 4-speed
Final Drive: chain
Brakes Front: expanding brake
Rear: expanding brake
Front Tire 4.00-11
Rear Tire 4.00-17
Weight 400.0 kg (wet)
Fuel Capacity 6.6 Gallon (25.00 Liters)
Manuals Service Manual

The Donghai SM750 (with sidecar) was a twin, four-stroke standard produced by Donghai between 1987 and 1990. It could reach a top speed of 74 mph (119 km/h). Claimed horsepower was 25.48 HP (19.0 KW) @ 4500 RPM.


The engine was a air cooled twin, four-stroke. A 78.0mm bore x 78.0mm stroke result in a displacement of just 745.0 cubic centimeters. Fuel was supplied via a overhead valves (ohv).


The bike has a 4-speed transmission.


It came with a 4.00-11 front tire and a 4.00-17 rear tire. Stopping was achieved via expanding brake in the front and a expanding brake in the rear. The SM750 (with sidecar) was fitted with a 6.6 Gallon (25.00 Liters) fuel tank.