DESC: 8000 Watts, 13500 Starting Watts 15 HP Briggs & Stratton Vanguard¿ OHV engine with Dura-Bore¿ cast iron cylinder sleeve for maximum durability Effortless Electric Start for easy touch of a button starting (battery included) 7 gallon fuel tank provides 10 hours of continuous run time at 1/2 load. Convenient outlets 4-120V household type and 1-120/240V 30A locking type, Manufacturer: Briggs and Stratton Power Products