Zongshen NH80

Zongshen NH80The Zongshen NH80 is a 72 cc, (4.82 cu·in) single-cylinder air-cooled 4-stroke internal combustion small gasoline engine, from NH-series manufactured by Zongshen Power Co.

It has a 51.0 mm (2.01 in) cylinder bore and 38.8 mm (1.53 in) piston stroke. Compression ratio rating is 7.6:1.

The Zongshen NH80 produced 2.0 PS (1.4 kW; 1.9 HP) at 3,600 rpm of maximum output power and 3.7 Nm (0.38 kg·m; 2.73 ft·lb) of maximum torque.

General information

Engine Specifications
ModelNH80
Type4-stroke, OHV, single cylinder
Displacement72 cm2, (4.82 cu·in)
Max. horsepower2.0 PS (1.4 kW; 1.9 HP) at 3,600 rpm
Max. torque3.7 Nm (0.38 kg·m; 2.73 ft·lb)
Fuel systemCarburetor
Cooling systemForced-air
Ignition system
Lubricating systemSplash system
Starting systemRecoil starter
Fuel tank capacity
Fuel consumption395 g/kWh
PTO shaft rotationCounterclockwise (from PTO shaft side)

Dimensions and Weight

Zongshen NH80
Length, mm (in)333 (13.1)
Width, mm (in)241 (9.5)
Height, mm (in)322 (12.7)
Dry weight, kg (lb)9.3 kg (20.5 lbs)

Maintenance data

Engine
Maximum speed:4,000 rpm
Idle speed:1,800±200 rpm
Valve clearance
Intake valve0.10-0.15 mm (0.004-0.006 in)
Exhaust valve0.15-0.20 mm (0.006-0.008 in)
Oil system
Oil type4-stroke engines oil
Recommended oil10W-30
Oil capacity0.5 L (0.53 US. qt, 0.44 Imp. qt.)
Ignition system
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
Author: Sergei Wers
About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

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