The 6500 Watt Portable Gas Generator is powered by a 389cc engine with low oil shut off which protects the engine from damage. CO-Protect Technology automatically shuts down the generator if carbon monoxide levels become unsafe or rapidly increase. This generator is equipped with covered outlets to help protect it from even the toughest jobsites and features heavy duty wheels for transportation and durability. The 7.5 Gal. steel fuel tank provides up to 10 hours of runtime at 50% load. The 1 ?? steel tube frame helps protect it from jobsite conditions.Refurbished units are clean condition and look brand new. Most are unused returns. They have never been fired up except during testing. If there has been prior use . it is very minimal. Our generators are manufacturer refurbished . and come in the box with everything included. All units are fully tested for performance and guaranteed to work like new. They come with a one year manufacturer’s warranty.