The Firman W03081 Inverters power is supplied by our Max Pro Series 171cc Firman engine which runs cool and efficient thanks to its Phoenix Fat Head Block. Our Whisper Series muffler keeps the W03081 running a quiet 58 decibels – well below the standards set by the National Parks Service, and our spark arrester has been approved by the USDA Forest Service. The 1.8 gallon fuel capacity provides a whopping 12 hours of run time. Starting is simple with the Firman First pull, reliable recoil system. The Firman digital automatic voltage regulator ensures clean, consistent power output from the Firman Power Stream alternator. For the ultimate in portability the W03081 is less than 95 lbs with a built in ergonomic handle. Major touch points are all front and center for easy starting and use, power, choke, eco-mode and all receptacles are conveniently located for easy access. The durable, lightweight, powerful inverter is built for years of use. Just add gas! Everything you need comes standard in the box including: oil, funnel, owner’s manual and, spark plug wrench.