Description Championâs Tri Fuel Open Frame Inverter with CO Shield is 50% quieter and 20% lighter than a traditional 7250-watt generator. Our advanced power solution includes Quiet Technology, Extended Run Time, Economy Mode and Clean Power. It also uses Tri Fuel technology, allowing it to run on natural gas, gasoline, or propane.PRODUCT DETAILS:Tri Fuel: Your 9000-watt portable generator operates on natural gas, propane, or gasoline, plus natural gas and propane hoses are included so the unit is ready to run on any fuel right out of the boxElectric Start: Trust the reliable 420cc Champion engine with its battery-included electric start featuring a reliable toggle switch, a built-in Cold Start Technology for easy starts in cold weather, plus features CO Shield carbon monoxide auto shutoff systemAdvanced Design: 50% quieter (72 dBA) and 20% lighter than a traditional 7250-watt generator, plus fuel-saving Economy Mode, and Intelligauge to monitor voltage, frequency and operating hoursPowerful: Gasoline: 9000 starting watts and 7250 running watts, propane: 9000 starting watts and 6525 running watts, natural gas: 9000 starting watts and 5875 running watts and engine oil is included