rated power(KW)1.822.52.83.2561Max power(KW)22.22.733.55.56.50.85Rated Frequency(HZ) 50/60 Rated Voltage(V) 110/220 Engine Medel(HP) 5.5 5.5 6.5 7.0 9.0 13 152.4 Engine typeAir-cooled;s-stroke;OHV.single cylinder Ignition systemTransistor Magnet starting systemRecoil/Electric Displacement(CC) 163 163 196 210 270 389 420 Noise Level(DB) 65 65 67 69 72 74 7865 Oil capacity 0.6 0.6 0.6 0.6 1.1 1.1 1.16 Net weight 40 40 43 45 75 82 8526Features and benefits a) Powered by BOOMASTER 4-Stroke OHV gasoline Engine. b) Large muffler for quiet operation. c) Standard configuration of voltmeter. d) Neat and economical for classical design. e) Circuit breaker protects overload operation. f) Emergency low oil alert warn the low lube oil level. g) AVR alternator provides stable voltage and current.