The Zongshen ZS 177F(E) is a 0.3 L (270 cc, 16.48 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 177F(E) engine has a single-cylinder, overhead valve (OHV) design, and recoil starter (177F) or electric starter (177FE). This engine used a carburetor fuel system, transistorized magneto ignition system, splash type lubricating system, and forced-air cooling system. The ZS 177F(E) is equipped with a 5.2 L (1.37 US. gal. 1.14 Imp. gal.) fuel tank.
The ZS 177F(E) engine produced 7.9 PS (5.8 kW; 7.8 HP) at 3,600 rpm of maximum horsepower and 15.8 N·m (1.6 kg·m, 11.6 ft·lb) of maximum torque.
General information
Engine Specifications | |
Engine model | ZS 177F(E) |
Engine type | 4-stroke, OHV, single-cylinder |
Displacement | 270 cm3, (16.48 cu·in) |
Max. horsepower | 7.9 PS (5.8 kW; 7.8 HP) at 3,600 rpm |
Max. torque | 15.8 N·m (1.6 kg·m, 11.6 ft·lb) |
Cooling system | Forced air |
Lubricating system | Splash |
Ignition system | Transistorized ignition |
Fuel system | Carburetor |
Fuel consumption | 374 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 |
Governor | Centrifugal govervor |
PTO shaft rotation | Counterclockwise (from PTO shaft side) |
Dimensions (L x W X H) | 435 x 370 x 425 mm (17.1 x 14.6 x 16.7 in) |
Dry weight | 25.0 kg (55.1 lbs) |
Cylinder Block and Head
It has a 77.0 mm (3.03 in) cylinder bore and 58.0 mm (2.28 in) piston stroke. Compression ratio rating is 8.4:1.
Cylinder block | |
Compression ratio: | 8.4:1 |
Cylinder bore: | 77.0 mm (3.03 in) |
Piston stroke: | 58.0 mm (2.28 in) |
Crankshaft center distance: | 29 mm (1.14 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 177F(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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