The YG2800I generator's inverter technology adjusts engine speed automatically to match power demand. As a result, the generator is fuel efficient and quiet. The 5.5-hp unit weighs 66 pounds and delivers 2,800 watts of power. Pure sine-wave output produces stable power, which allows users to run welders, battery chargers and microcomputer-controlled power tools from the generator. Features include a muffler, a 3-gallon fuel capacity and an oil-watch system.