The Zongshen NH225 is a 224 cc, (13.7 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 77.0 mm (3.03 in) and 55.0 mm (2.17 in), respectively.
The Zongshen NH225 produced 6.1 PS (4.5 kW; 6.0 HP) at 3,800 rpm of maximum output power and 12.5 Nm (1.28 kg·m; 9.23 ft·lb) at 3,600 rpm of maximum torque.
4-stroke, OHV, single cylinder
224 cm2, (13.7 cu·in)
6.1 PS (4.5 kW; 6.0 HP) at 3,600 rpm
12.5 Nm (1.28 kg·m; 9.23 ft·lb)
Fuel tank capacity
2.8 L (0.74 US. gal. 0.62 Imp. gal.)
PTO shaft rotation
Counterclockwise (from PTO shaft side)
Dimensions and Weight
Length, mm (in)
Width, mm (in)
Height, mm (in)
Dry weight, kg (lb)
15.4 kg (34 lbs)
0.10-0.15 mm (0.004-0.006 in)
0.15-0.20 mm (0.006-0.008 in)
4-stroke engines oil
0.6 L (0.63 US. qt, 0.53 Imp. qt.)
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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