Firman W1781 Portable Gas 1700/2100 Watt Inverter Generator

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The FIRMAN W1781 Inverter generator features 2100 starting watts and 1700 running watts. Power is supplied by our Max Pro Series 80cc FIRMAN engine which runs cool and efficient thanks to its Phoenix Fat Head Block.  Our Whisper Series muffler keeps the W01781 running a quiet 54 decibels – well below the standards set by the National Parks Service, and our spark arrester has been approved by the USDA Forest Service.  The 1.2 gallon fuel capacity provides a whopping 9 hours of run time.  Starting is simple with the FIRMAN First pull, reliable recoil system. 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. The perfect Camping, Tailgating, Outdoor Living Inverter on the market.

Powered by a Firman Max Pro Series Engine

  • Heavy duty steel tubing protects your generator in the roughest conditions
  • Low Oil Level Warning System
  • Automatically shuts down when oil pressure runs low
  • Light Weight
  • Easily Portable
  • Fuel Economy Mode
  • Reduce fuel consumption and promotes engine effeciency
  • Warranty
  • Industry leading 3 year warranty
  • 2,100 starting watts for your power needs
  • Bonus Accessories 
  • FUEL 1.2 gallon fuel tank, runs up to 9 hrs. at 50% load.
At only 44 lbs., our 1700 watt Firman generator is perfect in and around the RV, on the campsite while powering small appliances, or while at home.
Model # W1781
Starting Watts 2100 WATT
Running Watts 1700 Watt
Engine Brand FIRMAN Engine
Maximum Output (HP) 3.5 HP
Engine Model OHV
Displacement (cc) 80cc
Max THD@Loads between 50 and 100% <3%
Starting System Recoil
Oil Capacity (oz) 12 oz
Oil Bottle Included
Outlets 4
Run Time (1/2 load) hr 12 Hours
Fuel Tank (Gallon) 1.2
49 States (EPA) Yes
Decibel Level 54dB
Wheel Type & Size (rubber tires) -
Dry Weight (lb) 44
Dimensions (L X W X H) 21.5"x16.25"x18.25"
Packing Quantity 40 GP 660
Warranty 3 Year Warranty
UPC-Code (Carton Box) 840876117811



Our Sales Experts
  • Vito Pelagio

    Vito Pelagio18 Years Experience of Generator Sales

  • Phil Paulas

    Phil Paulas20 Years Experience of Generator Sales, Sizing & Warranty Support

  • Joe Byrne

    Joe Byrne21 Years Experience of Generator Sales & Generac Genpro Certified