The Zongshen ZS 190F(E) is a 0.4 L (420 cc, 25.63 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 190F(E) engine has a single-cylinder, overhead valve (OHV) design, and recoil starter (190F) or electric starter (190FE). This engine used a carburetor fuel system, transistorized magneto ignition system, splash type lubricating system, and forced-air cooling system. The ZS 190F(E) is equipped with a 5.2 L (1.37 US. gal. 1.14 Imp. gal.) fuel tank.
The ZS 190F(E) engine produced 10.6 PS (7.8 kW; 10.5 HP) at 3,600 rpm of maximum horsepower and 23.0 N·m (2.3 kg·m, 17 ft·lb) of maximum torque.
General information
| Engine Specifications | |
| Engine model | ZS 190F(E) |
| Engine type | 4-stroke, OHV, single-cylinder |
| Displacement | 420 cm3, (25.63 cu·in) |
| Max. horsepower | 10.6 PS (7.8 kW; 10.5 HP) at 3,600 rpm |
| Max. torque | 23.0 N·m (2.3 kg·m, 17 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 90.0 mm (3.54 in) and piston stroke is 66.0 mm (2.6 in). Compression ratio rating is 8.4:1.
| Cylinder block | |
| Compression ratio: | 8.4:1 |
| Cylinder bore: | 90.0 mm (3.54 in) |
| Piston stroke: | 66.0 mm (2.6 in) |
| Number of piston rings (compression / oil): | 2/1 |
| Number of main bearings: | 2 |
| Crankshaft center distance: | 33 mm (1.3 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 190F(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: | 25°±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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