The Zongshen GB270 is a 272 cc, (16.60 cu·in) single-cylinder air-cooled 4-stroke internal combustion small gasoline engine, from GB-series manufactured by Zongshen Power Co. for general-purpose applications.
The Zongshen GB270 engine has an overhead valve (OHV) design, carburetor fuel system, transistorized ignition system, and recoil or electric starter. A 75.0 mm (2.95 in) cylinder bore and 61.5 mm (2.42 in) piston stroke give the motor a total of 272 cc of displacement.
The Zongshen ZS GB270 produced 8.0 PS (5.8 kW; 7.8 HP) at 3,600 rpm of maximum output power and 15.5 Nm (1.58 kg·m; 11.44 ft·lb) of maximum torque.
General information
| Engine Specifications | |
| Model | GB270 |
| Type | 4-stroke, OHV, single cylinder |
| Displacement | 272 cm2, (16.60 cu·in) |
| Max. horsepower | 8.0 PS (5.8 kW; 7.8 HP) at 3,600 rpm |
| Max. torque | 15.5 Nm (1.58 kg·m; 11.44 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 | 3.6 L (0.95 US. gal. 0.79 Imp. gal.) |
| Fuel consumption | 375 g/kWh |
| PTO shaft rotation | Counterclockwise (from PTO shaft side) |
Dimensions and Weight
| Zongshen ZS GB270 | |
| Length, mm (in) | – |
| Width, mm (in) | – |
| Height, mm (in) | – |
| Dry weight, kg (lb) | 17.2 (37.9 ) |
Maintenance data
| Engine | |
| Maximum speed: | 3,600 rpm |
| Idle speed: | 1,440±140 rpm |
| Oil system | |
| Oil type | 4-stroke engines oil |
| Recommended oil | 10W-30 |
| Oil capacity | 0.6 l (0.6 US gal. 0.5 Imp. gal.) |
| 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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