Portable FIRMAN Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT generator with yellow and blue exterior, featuring multiple outlets, control panel, CO Alert technology, and wheels.
Promotional image of the FIRMAN Power Equipment Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT, highlighting key features like 5000 starting watts, 4000 running watts, 19l tank, and
Promotional image for the FIRMAN T04073 Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT featuring icons of included accessories: battery, padded u-shaped handle, never flat wheels, hose, tool kit, engine oil.
A Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT from FIRMAN Power Equipment set in front of a rustic barn surrounded by green grass and logs.
A blue FIRMAN Power Equipment Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT on wheels, with various sockets and dials, operates outdoors while a man works in the background.
Blue and black FIRMAN Power Equipment Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT, featuring yellow wheels, multiple outlets, and a control panel.
Illustration of a FIRMAN Power Equipment Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT electrical control panel with labels for switches, meters, and signs including CO Alert technology and shutdown instructions.
Promotional image featuring a FIRMAN Power Equipment Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT, displayed with bonus items including a cover, L5-30P to TT-30R adapter, and hose holder.
Front view of a FIRMAN Power Equipment T04073 Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT and sturdy wheels on a white background.
FIRMAN Power Equipment Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT, featuring black and yellow casing, wheels, visible engine components, against a white background.
Rear view of a FIRMAN Power Equipment Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT on wheels, showing its exposed engine and various operational components.
Blue and yellow FIRMAN Power Equipment Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT on white background, featuring multiple outlets and control panel.
A FIRMAN Power Equipment Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT, mounted on a black frame with wheels, against a striped gray background.
A FIRMAN Power Equipment Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT, with a black frame, yellow accents, and wheels, displayed against a striped white background.
A portable FIRMAN Power Equipment Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT on wheels with a blue and yellow case, featuring multiple outlets and dials on a control panel.
Man refueling a FIRMAN Power Equipment Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT outdoors next to a fence-lined field.
A person outdoors connects a battery to a FIRMAN Power Equipment Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT, displaying various outlets and control buttons.
Blue and yellow FIRMAN Power Equipment Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT, featuring labeled dimensions of 25.7", 21.6", and 21.8".
Portable FIRMAN Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT generator with yellow and blue exterior, featuring multiple outlets, control panel, CO Alert technology, and wheels.
Promotional image of the FIRMAN Power Equipment Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT, highlighting key features like 5000 starting watts, 4000 running watts, 19l tank, and
Promotional image for the FIRMAN T04073 Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT featuring icons of included accessories: battery, padded u-shaped handle, never flat wheels, hose, tool kit, engine oil.
A Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT from FIRMAN Power Equipment set in front of a rustic barn surrounded by green grass and logs.
A blue FIRMAN Power Equipment Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT on wheels, with various sockets and dials, operates outdoors while a man works in the background.
Blue and black FIRMAN Power Equipment Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT, featuring yellow wheels, multiple outlets, and a control panel.
Illustration of a FIRMAN Power Equipment Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT electrical control panel with labels for switches, meters, and signs including CO Alert technology and shutdown instructions.
Promotional image featuring a FIRMAN Power Equipment Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT, displayed with bonus items including a cover, L5-30P to TT-30R adapter, and hose holder.
Front view of a FIRMAN Power Equipment T04073 Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT and sturdy wheels on a white background.
FIRMAN Power Equipment Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT, featuring black and yellow casing, wheels, visible engine components, against a white background.
Rear view of a FIRMAN Power Equipment Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT on wheels, showing its exposed engine and various operational components.
Blue and yellow FIRMAN Power Equipment Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT on white background, featuring multiple outlets and control panel.
A FIRMAN Power Equipment Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT, mounted on a black frame with wheels, against a striped gray background.
A FIRMAN Power Equipment Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT, with a black frame, yellow accents, and wheels, displayed against a striped white background.
A portable FIRMAN Power Equipment Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT on wheels with a blue and yellow case, featuring multiple outlets and dials on a control panel.
Man refueling a FIRMAN Power Equipment Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT outdoors next to a fence-lined field.
A person outdoors connects a battery to a FIRMAN Power Equipment Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT, displaying various outlets and control buttons.
Blue and yellow FIRMAN Power Equipment Tri Fuel Portable Generator 4000W Electric Start 120/240V with CO ALERT, featuring labeled dimensions of 25.7", 21.6", and 21.8".
01/18
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 delivers reliable power-on-demand, running on gasoline, propane, or natural gas for maximum flexibility. With 5,000 starting watts and 4,000 running watts on gas, 4,500 starting watts and 3,600 running watts on propane, and 4,000 starting watts and 3,200 running watts on natural gas, this Tri-Fuel generator ensures you have power whenever and wherever you need it.

Equipped with CO Alert technology, the T04073 prioritizes safety by automatically shutting down if harmful carbon monoxide levels are detected. Its 5-gallon fuel tank provides up to 14 hours of runtime at 25% load, making it an ideal solution for home backup, camper vans, and outdoor events.

Please note: Propane tank not included.

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

Specifications

Certifications
CARB Certified No
EPA Certified Yes
cETL Certified Yes
NOM Certified Yes
UL Certified No
CARB Certified No
EPA Certified Yes
cETL Certified Yes
NOM Certified Yes
UL Certified No
Output
Running Watts 4000(Gas) 3600(LPG) 3200 (NG)
Starting Watts 5000(Gas) 4500(LPG) 4000(NG)
AC Voltage 120V/240V
Frequency (Hertz) 60
Decibels 67dB 1/4 load
Run Time 14 hrs 1/2 load
THD @ Full Load 25%
Running Watts 4000(Gas) 3600(LPG) 3200 (NG)
Starting Watts 5000(Gas) 4500(LPG) 4000(NG)
AC Voltage 120V/240V
Frequency (Hertz) 60
Decibels 67dB 1/4 load
Run Time 14 hrs 1/2 load
THD @ Full Load 25%
Control Panel
Recoil Start No
Electric Start Yes
5-20R 120V 20A DUPLEX GFCI 2
L5-30R 120V 30A TWISTLOCK 2
L14-30R 120V/240V 30A TWISTLOCK 1
Recoil Start No
Electric Start Yes
5-20R 120V 20A DUPLEX GFCI 2
L5-30R 120V 30A TWISTLOCK 2
L14-30R 120V/240V 30A TWISTLOCK 1
Machine
Low Oil Shutoff Yes
Power Stream Alternator Yes
Engine 223cc
Cast Iron Sleeve Yes
Low Oil Shutoff Yes
Power Stream Alternator Yes
Engine 223cc
Cast Iron Sleeve Yes
Fuel System
Fuel Gas
Tank Size 5 Gallon
Steel/Plastic Steel
Fuel Gas
Tank Size 5 Gallon
Steel/Plastic Steel
Wheel Kit
Wheels 8.0 inch-black/yellow -plastic/rubber-flat free
Handle U-shape Handle w/ grip
Wheels 8.0 inch-black/yellow -plastic/rubber-flat free
Handle U-shape Handle w/ grip

Packaging

Unit
UPC 840876140734
Unit Dimensions 28.3 x 18.1 x 21
Unit Length 28.3
Unit Width 18.1
Unit Height 21
Unit Weight 129
UPC 840876140734
Unit Dimensions 28.3 x 18.1 x 21
Unit Length 28.3
Unit Width 18.1
Unit Height 21
Unit Weight 129
Carton
Carton Dimensions 27.5 x 18.1 x 21
Carton Length 27.5
Carton Width 18.1
Carton Height 21
Carton Weight 140.3
Carton Dimensions 27.5 x 18.1 x 21
Carton Length 27.5
Carton Width 18.1
Carton Height 21
Carton Weight 140.3

Manuals

T04073 Manual English

download

T04073 Manual Spanish

download

T04073 Manual French

download

T04073 QSSG English

download

T04073 QSSG Spanish

download

T04073 QSSG French

download

Watch

CO Alert Overview

Watch

T04073 Unboxing

Watch

T04073 Maintenance

Watch

T04073 Overview

Related Products

The FIRMAN Power Equipment Tri Fuel Portable Generator 10000/8000W Electric Start with CO Alert features a sleek blue and black design, large wheels, and a yellow cord. Its user-friendly control panel with accessible switches and outlets makes it an ideal hybrid generator for any situation.
new arrival
TRI FUEL PORTABLE GENERATOR 10000/8000W ELECTRIC START WITH CO ALERT
$1,499.99 USD
Introducing the FIRMAN Tri Fuel Portable Generator, boasting 11600 Starting Watts and an electric start. With its blue and black frame, multiple outlets, yellow power cord coil in front, 120V/240V capability, and CO alert, it ensures reliable power wherever you need it.
TRI FUEL PORTABLE GENERATOR 11600W ELECTRIC START 120V/240V WITH CO ALERT
$1,599.99 USD
Portable blue and black FIRMAN Power Equipment Tri Fuel 8000W Portable Generator Electric Start 120/240V with CO ALERT with yellow wheels and multiple power outlets, displayed on a white background.
TRI FUEL 8000W PORTABLE GENERATOR ELECTRIC START 120/240V WITH CO ALERT
$1,499.99 USD
Coiled yellow FIRMAN Power Equipment 25' Heavy Duty L5-30P to (3) 5-20R power cord with a black label and multiple black sockets, isolated on a white background.
Sale
25' HEAVY DUTY L5-30P TO (3) 5-20R POWER CORD WITH STORAGE STRAP
$139.99 USD $102.99 USD
Black and yellow FIRMAN Power Equipment Heavy Duty Storage Strap with Handle, featuring a webbed design and printed text logo, isolated on a white background.
HEAVY DUTY STORAGE STRAP WITH HANDLE
$9.99 USD
Coiled yellow FIRMAN Power Equipment heavy-duty extension cord with a black handle and an L14-30P plug on one end and a 5-20R four-outlet receptacle on the other.
HEAVY DUTY L14-30P TO (4) 5-20R 25' CORD
$102.99 USD
@FIRMANpowerequipment
Image of a Woman holding a handle to an Inverter Generator and walking towards a pick up truck and trailer cart.
An image of a woman uncovering her FIRMAN Generator that is on her truck bed.
A man shows off his FIRMAN Accessories and Inverter Generator collection.
Image of a woman lifting her FIRMAN Inverter Generator with it's U-Shaped Handle
Image of a man holding a cup of coffee in the woods with a FIRMAN Power Generator that is connected to a power cord.
A FIRMAN generator is sitting on the bed of a white pick up truck. The truck is parked against a concrete wall.
Image of a small dog and a FIRMAN Inverter Generator with a suitcase handle, outside on a camping ground.
Image of a man sitting on FIRMAN Power Generator boxes and holding a small Inverter generator.