Zongshen NH100

Zongshen NH100The Zongshen NH100 is a 99 cc, (6.04 cu·in) single-cylinder air-cooled 4-stroke internal combustion small gasoline engine, from NH-series manufactured by Zongshen Power Co.

Cylinder bore and piston stroke are 57.0 mm (2.24 in) and 38.8 mm (1.53 in), respectively. Compression ratio rating is 8.1:1.

The Zongshen NH100 produced 2.3 PS (1.7 kW; 2.3 HP) at 3,600 rpm of maximum output power and 4.4 Nm (0.45 kg·m; 3.25 ft·lb) of maximum torque.

General information

Engine Specifications
Model NH100
Type 4-stroke, OHV, single cylinder
Displacement 99 cm2, (6.04 cu·in)
Max. horsepower 2.3 PS (1.7 kW; 2.3 HP) at 3,600 rpm
Max. torque 4.4 Nm (0.45 kg·m; 3.25 ft·lb)
Fuel system Carburetor
Cooling system Forced-air
Ignition system
Lubricating system Splash system
Starting system Recoil starter
Fuel tank capacity 0.9 L (0.24 US. gal. 0.2 Imp. gal.)
Fuel consumption 424 g/kWh
PTO shaft rotation Counterclockwise (from PTO shaft side)

Dimensions and Weight

Zongshen NH100
Length, mm (in) 333 (13.1)
Width, mm (in) 241 (9.5)
Height, mm (in) 322 (12.7)
Dry weight, kg (lb) 9.4 kg (20.7 lbs)

Maintenance data

Maximum speed: 4,000 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 0.5 L (0.53 US. qt, 0.44 Imp. qt.)
Ignition system
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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