The Zongshen NH150H 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 for rammers.
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 NH150H 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 | NH150H |
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 | – |
Fuel consumption | 400 g/kWh |
PTO shaft rotation | Counterclockwise (from PTO shaft side) |
Dimensions and Weight
Zongshen NH150H | |
Length, mm (in) | 318 (12.5) |
Width, mm (in) | 251 (9.9) |
Height, mm (in) | 346 (13.6) |
Dry weight, kg (lb) | 10.8 kg (23.8 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 |
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.
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