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.
|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|
|Ignition system||Transistorized ignition|
|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 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)|
|Valve arrangement:||OHV, belt driven|
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.
|Maximum speed:||3,900 rpm rpm|
|Idle speed:||1,800±200 rpm rpm|
|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 type:||4-stroke engine oil|
|Recommended oil:||SAE 10W-30|
|Oil capacity:||1.1 L (1.16 US. qt, 0.97 Imp. qt.)|
|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)|