February 6, 2026 HomeZongshenZongshen NH150 FORUM! Dear visitors, now our site has a FORUM where you can ask all your questions and share your experience.
The Zongshen NH150 is a 149 cc, (9.09 cu·in) single-cylinder air-cooled 4-stroke internal combustion small gasoline engine, from NH-series manufactured by Zongshen Power Co.
It has a 65.0 mm (2.56 in) cylinder bore and 45.0 mm (1.77 in) piston stroke. Compression ratio rating is 8.3:1.
The Zongshen NH150 produced 3.4 PS (2.5 kW; 3.4 HP) at 3,600 rpm of maximum output power and 7.2 Nm (0.73 kg·m; 5.31 ft·lb) at 3,600 rpm of maximum torque.
General information
Engine Specifications
Model
NH150
Type
4-stroke, OHV, single cylinder
Displacement
149 cm2, (9.09 cu·in)
Max. horsepower
3.4 PS (2.5 kW; 3.4 HP) at 3,600 rpm
Max. torque
7.2 Nm (0.73 kg·m; 5.31 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
400 g/kWh
PTO shaft rotation
Counterclockwise (from PTO shaft side)
Dimensions and Weight
Zongshen NH150
Length, mm (in)
333 (13.1)
Width, mm (in)
241 (9.5)
Height, mm (in)
322 (12.7)
Dry weight, kg (lb)
10.0 kg (22 lbs)
Maintenance data
Engine
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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We try to use verified sources and official documentation, however, differences between sources or errors in entering information may occur. We do not provide advice on technical issues related to the engines operation or repair. We do not recommend using provided information for engines repairing engines or spare parts ordering, use only official service manuals and spare-parts catalogs.
FORUM! Dear visitors, now our site has a FORUM where you can ask all your questions and share your experience.
The Zongshen NH150 is a 149 cc, (9.09 cu·in) single-cylinder air-cooled 4-stroke internal combustion small gasoline engine, from NH-series manufactured by Zongshen Power Co. 
