The Zongshen GB160 is a 0.2 L (163 cc, 9.95 cu·in) natural aspirated single-cylinder four-stroke air-cooled internal combustion small gasoline engine with a horizontal shaft from Zongshen GB-series, manufactured by Zongshen Power Co. for general-purpose applications.
The ZS GB160 engine has a single-cylinder, overhead valve (OHV) design, and recoil starter. This engine used a carburetor fuel system, transistorized magneto ignition system, splash type lubricating system, and forced-air cooling system. The ZS GB160 is equipped with a 2.6 L (0.69 US. gal. 0.57 Imp. gal.) fuel tank.
The Zongshen GB160 engine produced 4.4 PS (3.2 kW; 4.3 HP) at 3,600 rpm of maximum output power and 8.8 N·m (0.9 kg·m, 6.5 ft·lb) of peak torque.
General information
| Engine Specifications | |
| Engine model | GB160 |
| Engine type | 4-stroke, OHV, single-cylinder |
| Displacement | 163 cm3, (9.95 cu·in) |
| Max. horsepower | 4.4 PS (3.2 kW; 4.3 HP) at 3,600 rpm |
| Max. torque | 8.8 N·m (0.9 kg·m, 6.5 ft·lb) |
| Cooling system | Forced air |
| Lubricating system | Splash |
| Ignition system | Transistorized ignition |
| Fuel system | Carburetor |
| Fuel consumption | 395 g/kWh |
| Fuel tank capacity | 2.6 L (0.69 US. gal. 0.57 Imp. gal.) |
| Fuel used | Unleaded gasoline (octane number 86 or higher) |
| Starting system | Recoil starter |
| PTO shaft rotation | Counterclockwise (from PTO shaft side) |
| Dimensions (L x W X H) | – |
| Dry weight | 15.0 kg (33.1 lbs) |
Cylinder Block and Head
A 68.0 mm (2.68 in) cylinder bore and 45.0 mm (1.77 in) piston stroke give the GB160 engine a total of 163 cc of displacement.
| Cylinder block | |
| Compression ratio: | – |
| Cylinder bore: | 68.0 mm (2.68 in) |
| Piston stroke: | 45.0 mm (1.77 in) |
| Number of piston rings (compression / oil): | 2/1 |
| Number of main bearings: | 2 |
| Crankshaft center distance: | 22.5 mm (0.885 in) |
| Cylinder head | |
| Valve arrangement: | OHV |
| Valves:: | 2 |
Service Data
The 4-stroke engine oil with a viscosity of SAE 10W-30 is recommended for the GB160, refilling oil capacity is 0.6 L (0.63 US. qt, 0.53 Imp. qt.). The valve clearance is 0.10-0.15 mm (0.004-0.006 in) for intake valves and 0.15-0.20 mm (0.006-0.008 in) for exhaust valves.
| Engine | |
| Maximum speed: | 3,900 rpm |
| Idle speed: | 1,800±200 rpm |
| Valve clearance | |
| Intake valve clearance (COLD): | 0.10-0.15 mm (0.004-0.006 in) |
| Exhaust valve clearance (COLD): | 0.15-0.20 mm (0.006-0.008 in) |
| Oil system | |
| Lubrication system: | Splash |
| Oil type: | 4-stroke engine oil |
| Recommended oil: | SAE 10W-30 |
| Oil capacity: | 0.6 L (0.63 US. qt, 0.53 Imp. qt.) |
| Fuel system | |
| Type: | Carburetor |
| Ignition system | |
| Type: | Transistorized ignition |
| Ignition timing: | 23°±2° B.T.D.C. |
| 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) |
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