Rated output power (kW): 4.0 Max output power (kW):4.5 Rated rotation speed (rpm): 3000 DC output: 12V 8A Noise level dB (A)/4m (zero load-full load): 70-74 Fule tank[L]:23 Engine model:WG340 Engine type: 4-stroke,air cooled OHV Displacement [cc]: 337 Compression ratio: 8.5:1 Rated power [(HP/rpm]: 11/3600 spark plug:with. Overall dimensions [mm] ( L x W x H ): 645x540x640. N.W/G.W[Kg]: 85/86