Description The Motorhead® – SG13001 Built with a Honda GX690 OHV Dual Fuel Engine Designed to operate on both propane (LPG) and natural gas 20.4 HP (LPG), 18 HP (Natural Gas) Natural Gas requirement: 220,000 BTU per hour, 9″ W.C. of pressure Propane (LPG) requirement: 220,000 BTU per hour, 11″ W.C. of pressure Hydraulic/magnetic circuit breakers, GFCI & Twist-Lock Outlets Premium Mecc Alte Alternator with 100% copper windings, Made in Italy The AVR (Automatic Voltage Regulator) system provided by Mecc Alte produces precise voltage (less than 4% THD) necessary to power your sensitive electronics like computers MADE IN THE USA Features Electric Start Low oil shutoff protection Compatible with 50 amp manual transfer switch Battery and commercial 4 wheeled mobility kit included Digital display gives immediate accurate reading of Voltage, Hz, Hour meter and timer. Run time on LPG (Propane) up to 10 hrs at 50-percent load per 40 pound fuel tank Benefits Eliminates bad gasoline issues and lets you skip fuel-system winterization EPA COMPLIANT AND CARB APPROVED Honda® 3-year commercial warranty Smart Generators 3 year limited warranty