The Zongshen GB750S is a 750 cc, (45.8 cu·in) natural aspirated V-twin cylinder four-stroke air-cooled internal combustion small gasoline engine with a horizontal shaft, manufactured by Zongshen Power Co for construction machinery and generators.
The Zongshen GB750S engine has a V-twin cylinder, overhead valve (OHV) design, and recoil or electric starter. This engine used a carburetor fuel system, transistorized magneto ignition system, splash type lubricating system, and forced-air cooling system.
The Zongshen GB750S engine produced 21.8 PS (16.0 kW; 21.5 HP) at 3,900 rpm of maximum output power and 47 N·m (4.8 kg·m, 34.6 ft·lb) of peak torque.
|Engine type||4-stroke, OHV, V-twin|
|Displacement||750 cm3, (45.8 cu·in)|
|Max. horsepower||21.8 PS (16.0 kW; 21.5 HP) at 3,900 rpm|
|Max. torque||47 N·m (4.8 kg·m, 34.6 ft·lb) at rpm|
|Cooling system||Forced air|
|Ignition system||Transistorized ignition|
|Fuel consumption||370 g/kWh|
|Fuel used||Unleaded gasoline (octane number 86 or higher)|
|Starting system||Recoil or electric starter|
|PTO shaft rotation||Counterclockwise (from PTO shaft side)|
|Dimensions (L x W X H)||456 x 428 x 464 mm (18 x 16.9 x 18.3 in)|
|Dry weight||43.5 kg (95.9 lbs)|
Cylinder Block and Head
Cylinder bore and piston stroke are 82.0 mm (3.23 in) and 71.0 mm (2.8 in), respectively.
|Cylinder bore:||82.0 mm (3.23 in)|
|Piston stroke:||71.0 mm (2.8 in)|
|Number of piston rings (compression / oil):||2/1|
|Crankshaft center distance:||35.5 mm (1.4 in)|
|Maximum speed:||3,900 rpm rpm|
|Idle speed:||1,750±150 rpm rpm|
|Oil type:||4-stroke engine oil|
|Recommended oil:||SAE 10W-30|
|Oil capacity:||1.5 L (1.59 US. qt, 1.32 Imp. qt.)|
|Spark plug gap:||0.6-0.8 mm (0.0236-0.0315 in)|
|Spark plug torque:||20 N·m (2 kg·m, 14.7 ft·lb)|
We try to use official documentation and verify the published data, but errors may occur. In addition, specifications of machinery and equipment may vary depending on markets and modifications. We do not recommend the use of this data for spare parts or repairs. Use official service manuals or parts catalogs for your product.
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