GAS CONVERSION INSTRUCTIONSShould you need to convert your generator from LP (propane) to NG (natural gas) or vice-versa you will need to purchase the optional conversion kit. It includes a gas regulator and the necessary pilot and burner orifices. This link will demonstrate that. However, we don't really suggest you do this conversion yourself so for the price of the parts and shipping we will do the conversion labor free. Just give us a call for a work order and RA number. Not only will we convert it, but we will check everything and clean it real pretty.