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FIRMAN 3650-Watt Whisper Series Portable Inverter Generator - Recoil Start, Gasoline

By Firman Generators
Part #: W03381
  • FIRMAN Whisper Series Portable Inverter Generator
  • Start Type: Recoil
  • Fuel Type: Gasoline
  • Running (Rated) Watts: 3300
  • Starting (Surge) Watts: 3650
  • AC Voltage: 120 Volts
  • Frequency: 60 Hz
  • Engine Displacement: 193cc
  • Fuel Tank Volume: 1.8 Gal.
  • Runtime at 25% Load: 9 Hours
  • THD at Full Load: < or = 3%
  • Engine Type: FIRMAN Max-Pro Series OHV
  • Cylinder: Single
  • Alternator: Permanent Magnet
  • Outlets: (1) 5-20r 20A 120V Duplex, (1) TT-30R 30A 120V, (1) 2 Prong Angled 12V 8.3A DC Outlet, (1) USB 2.1A 5VDC
  • Dimensions: 23.2”L x 17.8”W x 17.9”H
  • Unit Weight: 93 lbs.
  • Handle: U-Shape Folding
  • Wheels: (2) 5" Plastic Flat Free
  • Foot Bracket: (2) Rubber Isolator
  • Certifications: EPA (50 States), CARB (California), cETL (Canada)
  • Cover Sold Separately: FIRMAN # 1007
  • Parallel Kit Sold Separately: FIRMAN # 1005 / 1201
  • Power Cord Sold Separately: FIRMAN # 1101

This part is universal

Have questions? Call us at 866-205-5299


Quiet and fuel-efficient, the FIRMAN W03381 Whisper Series Portable Inverter Generator provides clean power for electronics and sensitive equipment. It is best used for camping and tailgating. The Whisper Series muffler keeps the W03381 running a quiet 58dB, well below National Park standards. It is equipped with ECO mode to vary the power load needed to maximize fuel efficiency. The 1.8-gallon fuel tank runs for 10 hours and is California and Canada emissions certified. It has a Max-Pro Series FIRMAN OHV engine for longer life, higher performance, and lower maintenance. The engine features a cast iron sleeve for long durability and automatic low oil shutdown protection. The Max Pro Series 193cc engine runs cool and efficient thanks to the Phoenix Fat Head Block. The quiet Whisper Series muffler has a USDA FS certified spark arrester. It has a conveniently located multi-featured control panel with a FIRMAN custom designed outlet cover protecting outlets from dirt, dust, and debris. The 3-in-1 Data Minder monitors running hours, voltage, and frequency. The W03381 has a built-in parallel kit allowing for double power with the addition of any of FIRMAN’s inverter generators (parallel cables and second generator sold separately). Bonus accessories include engine oil, oil funnel, tool kit, battery float charger, and battery charge cable. For maximum portability, the W03381 weighs 97 lbs. with a wheel kit and handle.


Generator & Inverter Type
Portable Generator
Generator & Inverter Running Wattage
2000 - 3900 Watts


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