Zongshen 190F(E)

Zongshen 190F(E) engineThe 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.

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)
Author: Sergei Wers
About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

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We try to use official documentation and verify the published data, but errors may occur. In addition, specifications of machinery and equipment may vary depending on markets and modifications. We do not recommend the use of this data for spare parts or repairs. Use official service manuals or parts catalogs for your product.

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