The Zongshen 173F(E) is a 243 cc, (14.83 cu·in) single-cylinder air-cooled 4-stroke internal combustion small gasoline engine manufactured by Zongshen Power Co. for general-purpose applications.
The Zongshen 173F(E) engine has an overhead valve (OHV) design, carburetor fuel system, transistorized ignition system, and a recoil starter or electric starter. The Zongshen ZS 173F(E) engine a compression ratio rating is 8.4:1. Bore and stroke are 73.0 mm (2.87 in) and 54.0 mm (2.13 in), respectively.
The Zongshen ZS 173F(E) produced 6.7 PS (4.9 kW; 6.5 HP) at 3,600 rpm of maximum output power and 14.0 N·m (1.4 kg·m, 10.3 ft·lb) of maximum torque.
General information
Engine Specifications | |
Model | BT 173F(E) |
Type | 4-stroke, OHV, single cylinder |
Displacement | 243 cm2, (14.83 cu·in) |
Max. horsepower | 6.7 PS (4.9 kW; 6.5 HP) at 3,600 rpm |
Max. torque | 14.0 N·m (1.4 kg·m, 10.3 ft·lb) |
Fuel system | Carburetor |
Cooling system | Forced-air |
Ignition system | Transistorized |
Lubricating system | Splash system |
Starting system |
173F – Recoil starter 173FE – 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 173F(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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