Honda-EU3000iS Tri-Fuel Kit uses an adapter that makes it possible to operate an engine on three different fuels Propane, Natural Gas, and Gasoline. Adapters will mix the Propane or Natural Gas into the air stream above the gasoline carburetor. The gasoline carburetor remains basically untouched. So this kit is not a conversion, it is an adaptation. Comes with Custom Step-by-Step Instructions For EU3000iS Model Only. This kit provides a high pressure regulator and hose for connecting to a BBQ style propane tank We have customized prototyped this kit to fit EU3000iS Model exactly! Please check out our Conversion Kit Accessories. Please note that on rare occasions our adapter may cause air disruption when attached to carburetorair cleaner assembly. You may need to remove our adapter if you want to run on gasoline.