The Sportsman GEN4000DF-SS is a dual-fuel generator that can run on either gasoline or propane. It has a reliable 4-stroke OHV engine with 7HP. It also includes a 3.9-gallon fuel tank. This generator is ideal for use in emergency situations or powering up small appliances during a power outage. Plus, it's relatively lightweight at only 91 pounds, making it easy to transport. Another great feature of this generator is its run time - it can run for up to 10 hours on gasoline or 12 hours on propane at half load. So whether you need a little extra power for your home or camping trip, the Sportsman GEN4000DF-SS has you covered.