Certification: Certification cETL Certification EPA
Model: t04073

Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT

$959.99 USD
Free Shipping on all Generators
SERIES Hybrid
TYPE Open Frame Generator

The FIRMAN T04073 Tri-Fuel Portable Generator delivers reliable power-on-demand with unmatched fuel flexibility, allowing you to run on gasoline, propane (LPG), or natural gas (NG). Whether you’re preparing for a power outage, setting up camp, or powering tools at an outdoor job site, the T04073 adapts to your needs without compromise.

This versatile generator produces 5,000 starting watts and 4,000 running watts on gasoline, 4,500 starting watts and 3,600 running watts on propane, and 4,000 starting watts and 3,200 running watts on natural gas. A 5-gallon fuel tank delivers up to 14 hours of runtime at 25% load, providing dependable, all-day power when it matters most.

Powered by a durable 223cc FIRMAN engine, the T04073 features electric start, recoil backup, and low oil shutoff for easy operation and long-term reliability. Safety is built in with FIRMAN CO Alert technology, which automatically shuts down the generator if unsafe carbon monoxide levels are detected.

Designed for home backup power, RVs, camper vans, and outdoor events, the T04073 provides 120/240V output and a versatile outlet panel that includes a 120V 20A GFCI duplex (5-20R) for household use, a 120V 30A twist-lock (L5-30R), and a 120/240V 30A twist-lock (L14-30R) capable of supporting larger appliances and equipment.

Versatile. Portable. Dependable. The FIRMAN T04073 is your go-to solution for tri-fuel portable power.

The T04073 comes with an engine oil bottle, oil funnel, spark plug wrench, a double open-ended wrench (10mm,12mm), LPG regulator with hose holder, cover and adaptor.

**This product is not certified to ship to California.

LEGENDARY FIRMAN ENGINEERING

  • 223cc tri fuel engine
  • Recoil start 
  • Electric start 
  • Low oil shut off
  • Cast iron sleeve
  • Running watts 4000W (GAS), 3600W (LPG), 3200W (NG)
  • Starting watts 5000W (GAS), 4500W (LPG). 4000W (NG)
  • 120/240 volts

PERFORMANCE IN A LEAGUE OF ITS OWN

  • Runs on gasoline, propane, and natural gas
  • 5-gallon tank
  • Up to 14 hours of run time at 25% load
  • Weight: 129 lbs
  • 67dB at ¼ load

FEATURES YOU EXPECT FROM FIRMAN

3-year warranty

Multi-featured control panel with covered outlets

  • (1) 5-20R 120V 20A DUPLEX GFCI
  • (1) L5-30R 120V 30A TWISTLOCK
  • (1) L14-30R 120V/240V 30A TWISTLOCK (16.7A/240V4000W)
ENGINEERED IN THE USA

FIRMAN generators are made to endure every condition from cold winter nights to hot summer days to everything in between.

Industry-Leading Warranty

New FIRMAN generators are backed by a 3-year warranty. Refurbished generators have a limited 90 day warranty

Customer Support

Our skilled technicians located in Peoria, AZ are available 7 days a week to provide the support you need when you need it most. 

5000/4000

Gas

4500/3600

Liquid Propane

4000/3200

Natural Gas

5 Gallon Tank

12Hr Run Time

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Manuals

T04073 Manual English

download

T04073 Manual Spanish

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T04073 Manual French

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T04073 QSSG English

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T04073 QSSG Spanish

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T04073 QSSG French

download

Watch

CO Alert Safety Information

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T04073 Unboxing Overview

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T04073 Maintenance Guide

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T04073 Overview

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How to Service the Carburetor on FIRMAN Hybrid Generators

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