The Zongshen 177F(E) is a 270 cc, (16.5 cu·in) single-cylinder air-cooled 4-stroke internal combustion small gasoline engine manufactured by Zongshen Power Co. for general-purpose applications.
The Zongshen 177F(E) engine has an overhead valve (OHV) design, carburetor fuel system, transistorized ignition system, and a recoil starter or electric starter. The Zongshen 177F(E) engine a compression ratio rating is 8.4:1. It has a 77.0 mm (3.03 in) cylinder bore and 58.0 mm (2.28 in) piston stroke.
The Zongshen ZS 177F(E) produced 7.9 PS (5.8 kW; 8.0 HP) at 3,600 rpm of maximum output power and 15.8 N·m (1.6 kg·m, 11.6 ft·lb) of maximum torque.
General information
| Engine Specifications | |
| Model | BT 177F(E) |
| Type | 4-stroke, OHV, single cylinder |
| Displacement | 270 cm2, (16.5 cu·in) |
| Max. horsepower | 7.9 PS (5.8 kW; 8.0 HP) at 3,600 rpm |
| Max. torque | 15.8 N·m (1.6 kg·m, 11.6 ft·lb) |
| Fuel system | Carburetor |
| Cooling system | Forced-air |
| Ignition system | Transistorized |
| Lubricating system | Splash system |
| Starting system |
177F – Recoil starter 177FE – Electric staretr |
| Fuel tank capacity | 5.2 L (1.37 US. gal. 1.14 Imp. gal.) |
| Fuel consumption | 374 g/kWh |
| PTO shaft rotation | Counterclockwise (from PTO shaft side) |
Dimensions and Weight
| Zongshen ZS 177F(E) | |
| Length, mm (in) | 435 (17.1) |
| Width, mm (in) | 370 (14.6) |
| Height, mm (in) | 425 (16.7) |
| Dry weight, kg (lb) | 25.0 (55.1) |
Maintenance data
| Engine | |
| Maximum speed: | 3,900 rpm |
| Idle speed: | 1,800±200 rpm |
| Valve clearance | |
| Intake valve | 0.10-0.15 mm (0.004-0.006 in) |
| Exhaust valve | 0.15-0.20 mm (0.006-0.008 in) |
| Oil system | |
| Oil type | 4-stroke engines oil |
| Recommended oil | 10W-30 |
| Oil capacity | 1.1 L (1.16 US. qt, 0.97 Imp. qt.) |
| Ignition system | |
| Ignition timing | 23°±2° B.T.D.C. (Fixed) |
| Spark plug gap | 0.6-0.8 mm (0.024-0.031 in) |
| Spark plug torque | 20 N·m; 2.0 kg·m; 14.7 ft·lb |
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