Yanmar Powered 5.5 kW Diesel - The S5500 generator is designed for general use by the professional. This unit is designed for heavy duty service on the job site or as temporary stand-by-power. The S5500 features a premium engine in the 10 HP Yanmar L100. This unit features brushless HD alternators with THD less than 6%. The S5500 generator is equipped with a deluxe panel w/ voltmeter and hourmeter, main line circuit breaker, frame mounted long run 8 gallon fuel tank, super heavy duty frames and is electric start. DOES NOT INCLUDE BATTERY.