Briggs & Stratton 30547, 3500 Running Watts/4375 Starting Watts, Gas Powered Portable Generator(Discontinued by Manufacturer) Briggs and Stratton 1150 Series OHV engine, 250 cc with 11.50 ft-lbs. of gross torque Briggs and Stratton engine for long life, high performance and great fuel efficiency Power Surge alternator produces the power needed to start and keep appliances and tools running 4 gallon metal fuel tank provides up to 8 hour run time at 50% load Multi-featured control panel; (2) 120V household outlets and (1) 30-Amp RV Outlet