The Zongshen ZS 188F(E) is a 0.4 L (389 cc, 23.74 cu·in) natural aspirated single-cylinder four-stroke air-cooled internal combustion small gasoline engine with a horizontal shaft, manufactured by Zongshen Power Co. for general-purpose applications.
The ZS 188F(E) engine has a single-cylinder, overhead valve (OHV) design, and recoil starter (188F) or electric starter (188FE). This engine used a carburetor fuel system, transistorized magneto ignition system, splash type lubricating system, and forced-air cooling system. The ZS 188F(E) is equipped with a 5.2 L (1.37 US. gal. 1.14 Imp. gal.) fuel tank.
The Zongshen ZS 188F(E) engine produced 10.1 PS (7.4 kW; 9.9 HP) at 3,600 rpm of maximum output power and 22.0 N·m (2.2 kg·m, 16.2 ft·lb) of peak torque.
General information
Engine Specifications | |
Engine model | ZS 188F(E) |
Engine type | 4-stroke, OHV, single-cylinder |
Displacement | 389 cm3, (23.74 cu·in) |
Max. horsepower | 10.1 PS (7.4 kW; 9.9 HP) at 3,600 rpm |
Max. torque | 22.0 N·m (2.2 kg·m, 16.2 ft·lb) |
Cooling system | Forced air |
Lubricating system | Splash |
Ignition system | Transistorized ignition |
Fuel system | Carburetor |
Fuel consumption | 370 g/kWh |
Fuel tank capacity | 5.2 L (1.37 US. gal. 1.14 Imp. gal.) |
Fuel used | Unleaded gasoline (octane number 86 or higher) |
Starting system | Recoil or electric starter |
Stoping system | Ignition primary circuit ground |
Dimensions (L x W X H) | 460 x 405 x 430 mm (18.1 x 15.9 x 16.9 in) |
Dry weight | 31.0 kg (68.3 lbs) |
Cylinder Block and Head
Cylinder bore is 88.0 mm (3.46 in) and piston stroke is 64.0 mm (2.52 in). Compression ratio rating is 8.3:1.
Cylinder block | |
Compression ratio: | 8.3:1 |
Cylinder bore: | 88.0 mm (3.46 in) |
Piston stroke: | 64.0 mm (2.52 in) |
Number of piston rings (compression / oil): | 3 |
Number of main bearings: | 2 |
Crankshaft center distance: | 32 mm (1.26 in) |
Cylinder head | |
Valve arrangement: | OHV, belt driven |
Valves:: | 2 |
Service Data
The 4-stroke engine oil with a viscosity of SAE 10W-30 is recommended for the ZS 188F(E), refilling oil capacity is 1.1 L (1.16 US. qt, 0.97 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 rpm |
Idle speed: | 1,800±200 rpm 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: | 1.1 L (1.16 US. qt, 0.97 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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