model- eco4990es. brand -firman. ac frequency-50 hz. starting watts-3400 w. running watts-3100 w. alternator type: brush, self exciting, synchronous,2-pole,100% copper enamelled wire. voltage regulation- 220v. phase -single phase. engine type max -7.0hp 4-stroke single cylinder, ohv, air cooled. dc output hp/ kw）-none. starting system: recoil/electric. fuel -petrol. fuel tank capacity- 15l. oil capacity- 1.5l. noise level @ 7 meters- 66 db. dimensions (lxwxh)- 597*465*487. weight- 65 kg. firman is a generating equipment brand under sumec group. as an important member of sinomach, a fortune 500 enterprise, sumec group was founded in 1978 and specializes in trade and service, engineering contracting, and investment development. after 30 years of development, sumec has become an international and diversified modern manufacturing service group. for years, firman brand trademark has been registered in 92 countries and regions all over the world. firman products are widely applied to many fields such as routine life, industrial production, communications, medical care, finance, energy, and construction. firman provides professional products and services for customers from more than 100 countries and regions in the world. we are committed to creating stable, highly-efficient, and clean generating equipment and integrated power solution for customers and help customers obtain reliable power supply, reduce energy consumption, and save operation and maintenance (o&m) costs. firman generator sets ranked first for six consecutive years among brands of exported portable gasoline generator in china.