Dont limit yourself to using just one fuel source to power your appliances. The Champion Dual-Fuel Manual-Start Generators run on your choice of gasoline or propane right out of the box for unmatched versatility. The four-stroke, single-cylinder Champion OHV engine features a cast-iron sleeve for added durability, low-oil shut-off for safety and recoil start. Quickly switch between fuels using the fuel-selector safety switch. Volt Guard protects your appliances from power surges. Cold Start technology ensures these generators start up easily in cold conditions. Both models have a gasoline fuel tank and propane inlet (propane hose included). Manufacturers three-year warranty. Available: 3,500-Watt Generator The 224cc engine delivers 120-volt operation with one 30-amp RV, one 30-amp and two 20-amp outlets. Runs up to 9 hours. on a full tank of gas (3.4-gal. gasoline fuel tank). Noise level of 68dBA from 23 ft. 50-state compliant (CARB certified). 23.2L x 19.1W x 20H. Wt: 104.9 lbs. 5,500-Watt Generator The 389cc engine delivers 120/240-volt operation with one 30-amp and four 20-amp outlets. Durable steel frame with folding handle and never-flat tires for easy transport. Runs up to 8 hours. on a full tank of gas (6.1-gal. gasoline fuel tank). Noise level of 74dBA from 23 ft. 50-state compliant (CARB and EPA certified). 27L x 27.7W x 24.4H. Wt: 162.5 lbs. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Dual Fuel Generators.