Zongshen 161F

Zongshen 161FThe Zongshen 161F is a 123 cc, (7.51 cu·in) single-cylinder air-cooled 4-stroke internal combustion small gasoline engine manufactured by Zongshen Power Co. for general-purpose applications.

The Zongshen BT161F engine has an overhead valve (OHV) design, carburetor fuel system, transistorized ignition system, and a recoil starter. The ZS 161F engine a compression ratio rating is 8.7:1, cylinder bore and piston stroke are 61.0 mm (2.4 in) and 42.0 mm (1.65 in), respectively.

The Zongshen ZS 161F produced 3.0 PS (2.2 kW, 3.0 HP) at 3,600 rpm of maximum horsepower.

General information

Engine Specifications
ModelBT 161F
Type4-stroke, OHV, single cylinder
Displacement123 cm2, (7.51 cu·in)
Max. horsepower3.0 PS (2.2 kW, 3.0 HP) at 3,600 rpm
Max. torque
Fuel systemCarburetor
Cooling systemForced-air
Ignition systemTransistorized
Lubricating systemSplash system
Starting systemRecoil starter
Fuel tank capacity1.5 L (0.4 US. gal. 0.33 Imp. gal.)
Fuel consumption394 g/kWh
PTO shaft rotationCounterclockwise (from PTO shaft side)

Dimensions and Weight

Zongshen ZS 161F
Length, mm (in)390 (15.4)
Width, mm (in)280 (11.0)
Height, mm (in)320 (12.6)
Dry weight, kg (lb)12.5 (27.6)

Maintenance data

Engine
Idle speed:1,450±150 rpm
Valve clearance
Intake valve0.10-0.15 mm (0.0039-0.0059 in)
Exhaust valve0.15-0.20 mm (0.0059-0.0079 in)
Oil system
Oil type4-stroke engines oil
Recommended oil10W-30
Oil capacity0.6 l (0.6 US gal. 0.5 Imp. gal.)
Ignition system
Ignition timing23°±2° B.T.D.C. (Fixed)
Spark plug gap0.6-0.8 mm (0.024-0.031 in)
Spark plug torque20 N·m; 2.0 kg·m; 14.7 ft·lb
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