Zongshen 170F(E)

Zongshen 170F(E)The Zongshen 170F(E) is a 208 cc, (12.7 cu·in) single-cylinder air-cooled 4-stroke internal combustion small gasoline engine manufactured by Zongshen Power Co. for general-purpose applications.

The Zongshen 170F(E) engine has an overhead valve (OHV) design, carburetor fuel system, transistorized ignition system, and a recoil starter or electric starter. The Zongshen ZS 170F(E) engine a compression ratio rating is 8.1:1, cylinder bore and piston stroke are 70.0 mm (2.76 in) and 54.0 mm (2.13 in), respectively.

The Zongshen ZS 170F(E) produced 5.4 PS (4.0 kW; 5.5 HP) at 3,600 rpm of maximum output power and 11.0 N·m (1.1 kg·m, 8.1 ft·lb) of maximum torque.

General information

Engine Specifications
Model BT 170F(E)
Type 4-stroke, OHV, single cylinder
Displacement 208 cm2, (12.7 cu·in)
Max. horsepower 5.4 PS (4.0 kW; 5.4 HP) at 3,600 rpm
Max. torque 11.0 N·m (1.1 kg·m, 8.1 ft·lb)
Fuel system Carburetor
Cooling system Forced-air
Ignition system Transistorized
Lubricating system Splash system
Starting system 170F – Recoil starter
170FE – Electric staretr
Fuel tank capacity 2.6 L (0.69 US. gal. 0.57 Imp. gal.)
Fuel consumption 374 g/kWh
PTO shaft rotation Counterclockwise (from PTO shaft side)

Dimensions and Weight

Zongshen ZS 170F(E)
Length, mm (in) 390 (15.4)
Width, mm (in) 330 (13.0)
Height, mm (in) 350 (13.8)
Dry weight, kg (lb) 15.5 (34.2)

Maintenance data

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 0.6 l (0.6 US gal. 0.5 Imp. gal.)
Ignition system
Ignition timing 25°±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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