Zongshen GB750S

Zongshen GB750SThe Zongshen GB750S is a 750 cc, (45.8 cu·in) V-twin cylinders air-cooled 4-stroke internal combustion small gasoline engine, from GB-series manufactured by Zongshen Power Co. for general-purpose applications.

The Zongshen GB750S engine has an overhead valve (OHV) design, carburetor fuel system, transistorized ignition system, and recoil or electric starter. The cylinder bore is 82.0 mm (3.23 in) and the piston stroke is 71.0 mm (2.8 in).

The Zongshen GB750S 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 maximum torque.

General information

Engine Specifications
Model GB750S
Type 4-stroke, OHV, V-twin
Displacement 750 cm2, (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)
Fuel system Carburetor
Cooling system Forced-air
Ignition system Transistorized
Lubricating system Splash system
Starting system Recoil or electric starter
Fuel tank capacity
Fuel consumption 360 g/kWh
PTO shaft rotation Counterclockwise (from PTO shaft side)

Dimensions and Weight

Zongshen GB750S
Length, mm (in) 456 mm (18.0 in)
Width, mm (in) 428 mm (16.9 in)
Height, mm (in) 464 mm (18.3 in)
Dry weight, kg (lb) 43.5 kg (95.9 lbs)

Maintenance data

Maximum speed: 3,900 rpm
Idle speed: 1,750±150 rpm
Oil system
Oil type 4-stroke engines oil
Recommended oil 10W-30
Oil capacity 1.5 L (1.59 US. qt, 1.32 Imp. qt.)
Ignition system
Spark plug gap 0.6-0.8 mm (0.024-0.031 in)
Spark plug torque 20 N·m; 2.0 kg·m; 14.7 ft·lb
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