A black and yellow FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 6850W Electric Start With CO Alert with multiple outlets and controls. Featuring a handle and wheels for easy mobility, this portable power generator is designed for versatile use.
Image of the FIRMAN Power Equipment Tri-Fuel Inverter Portable Generator 6850W Electric Start with CO Alert, featuring specifications such as 6850 starting watts for gas, 6250 for propane, and 5500 for natural gas. Additional features include a 14-hour runtime and CO Alert shutdown.
The FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 6850W Electric Start With CO Alert is a portable, versatile power generator with various control buttons, outlets, and two large wheels in the bottom right corner for easy transportation. It also features a CO Alert feature for added safety.
Rear view of a black FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 6850W Electric Start With CO Alert showing ventilation grilles, a yellow knob on the right side, and warning labels at the top.
A black and gray portable generator labeled "Tri Fuel Inverter Portable Generator 6850W Electric Start With CO Alert" by FIRMAN Power Equipment with large wheels and a handle for easy transport. This tri-fuel power generator's control panel displays various technical specifications and safety warnings in multiple languages.
Rear view of a Whisper series portable generator showing the ventilation grille, control panel instructions, warning labels, and two wheels for mobility. This FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 6850W Electric Start with CO Alert also features CO Alert for enhanced safety.
Top view of a FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 6850W Electric Start With CO Alert showing various labels, including safety instructions, operating guidelines, and fuel gauge, set against a black casing with yellow and white accents.
A versatile black and yellow generator with multiple outlets, control panel, and large wheels for mobility. This FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 6850W Electric Start With CO Alert also includes a CO Alert feature for added safety.
A gray FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 6850W Electric Start With CO Alert with a digital control panel, large rear wheels, and visible instructional labels on the front.
A FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 6850W Electric Start With CO Alert with a black and gray exterior, featuring control panels, two wheels for mobility, and labeled safety instructions.
A wheeled Tri Fuel Inverter Portable Generator 6850W Electric Start With CO Alert with multiple outlets and control switches, labeled "FIRMAN Power Equipment." The unit has a handle on the side for easy transportation, making it the ideal power generator for versatility and reliability.
A portable FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 6850W Electric Start With CO Alert with multiple outlets, a control panel, and two wheels for easy transport.
A black and yellow FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 6850W Electric Start With CO Alert with multiple outlets and controls. Featuring a handle and wheels for easy mobility, this portable power generator is designed for versatile use.
Image of the FIRMAN Power Equipment Tri-Fuel Inverter Portable Generator 6850W Electric Start with CO Alert, featuring specifications such as 6850 starting watts for gas, 6250 for propane, and 5500 for natural gas. Additional features include a 14-hour runtime and CO Alert shutdown.
The FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 6850W Electric Start With CO Alert is a portable, versatile power generator with various control buttons, outlets, and two large wheels in the bottom right corner for easy transportation. It also features a CO Alert feature for added safety.
Rear view of a black FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 6850W Electric Start With CO Alert showing ventilation grilles, a yellow knob on the right side, and warning labels at the top.
A black and gray portable generator labeled "Tri Fuel Inverter Portable Generator 6850W Electric Start With CO Alert" by FIRMAN Power Equipment with large wheels and a handle for easy transport. This tri-fuel power generator's control panel displays various technical specifications and safety warnings in multiple languages.
Rear view of a Whisper series portable generator showing the ventilation grille, control panel instructions, warning labels, and two wheels for mobility. This FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 6850W Electric Start with CO Alert also features CO Alert for enhanced safety.
Top view of a FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 6850W Electric Start With CO Alert showing various labels, including safety instructions, operating guidelines, and fuel gauge, set against a black casing with yellow and white accents.
A versatile black and yellow generator with multiple outlets, control panel, and large wheels for mobility. This FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 6850W Electric Start With CO Alert also includes a CO Alert feature for added safety.
A gray FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 6850W Electric Start With CO Alert with a digital control panel, large rear wheels, and visible instructional labels on the front.
A FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 6850W Electric Start With CO Alert with a black and gray exterior, featuring control panels, two wheels for mobility, and labeled safety instructions.
A wheeled Tri Fuel Inverter Portable Generator 6850W Electric Start With CO Alert with multiple outlets and control switches, labeled "FIRMAN Power Equipment." The unit has a handle on the side for easy transportation, making it the ideal power generator for versatility and reliability.
A portable FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 6850W Electric Start With CO Alert with multiple outlets, a control panel, and two wheels for easy transport.
01/12
Certification: Certification cETL Certification EPA
Model: wt05571

Tri Fuel Inverter Portable Generator 6850W Electric Start With CO Alert
$1,899.99 USD
Free Shipping on all Generators
SERIES Whisper,Hybrid
TYPE Tri Fuel Inveter

The FIRMAN WT05571 is a Tri-Fuel Whisper Series generator designed for ultimate flexibility and convenience, running on gasoline, propane, or natural gas with the push of a button. Delivering 6,850 starting watts and 5,500 running watts on gas, 6,250 starting watts and 5,000 running watts on propane, and 5,500 starting watts and 4,500 running watts on natural gas, it ensures reliable power for any adventure or backup need.

Packed into a compact 136.7 lb frame, the WT05571 is easily portable with its built-in wheel kit and handle. Operating at a quiet 67 dB, it also features eco-mode for improved fuel efficiency. Safety is a top priority with CO Alert technology, which automatically shuts down the unit if dangerous carbon monoxide levels are detected.

Perfect for RV enthusiasts, campers, DIYers, and home backup, the WT05571 is equipped with various outlets to accommodate diverse power needs. The generator comes with an engine oil bottle, oil funnel, tool kit, LPG regulator, and a quick oil drain for easy maintenance.

Experience superior performance and adaptability with the FIRMAN WT05571—your trusted power solution for any situation.

The WT05571 comes with an engine oil bottle, an oil funnel, a tool kit, an LPG regulator, and a quick oil drain.

**This product is not certified to ship to California.
Natural Gas 25' Hose with Storage Strap

Natural Gas 25' Hose with Storage Strap

FIRMAN PRECISION, LEGENDARY PERFORMANCE

  • 322cc engine
  • Recoil start 
  • Electric start 
  • Starting watts 6850W (GAS), 6250W (LPG), 5500(NG)
  • Running watts 5500W (GAS), 5000W (LPG), 4500W(NG)
  • 120/240 AC Volts
  • Low oil shut off
  • Cast iron sleeve

OUR PERFORMANCE, YOUR ADVANTAGE

  • 5.3-gallon tank
  • Up to 14.5 hours of run time at 1/4 load
  • Weight: 131.4 lbs
  • 67dB ¼ load
  • Eco Mode

FEATURES THAT GO BEYOND YOUR EXPECTATIONS

3-year warranty

Parallel Operation

Multi-Meter

CO alert technology

Multi-featured control panel with covered outlets

  • (1) 5-20R 120V 20A DUPLEX GFCI
  • (1) TT-30R 120V 30A TWISTLOCK
  • (1) L14-30R 120V/240V 30A TWISTLOCK (22.9A/240V/5500W)
  • (1) 14-50R 120V/240V 50A (22.9A/240V/5300W)
  • (1) USB-C (3.1/5A/5/9/12/15/20V DC/60W)
  • (1) 12V DC Power Port/Plug (8.3A/12V DC/100W)
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. 

6850/5500

Gas

6250/5000

Liquid Propane

5500/4500

Natural Gas

14.5Hr Run Time

5.3 Gallon Tank

Specifications

Certifications
CARB Certified No
EPA Certified Yes
cETL Certified Yes
PGMA Yes
CPSC (UL2201) Certified No
CARB Certified No
EPA Certified Yes
cETL Certified Yes
PGMA Yes
CPSC (UL2201) Certified No
Output
Running Watts 5500 Gas
Running Watts 5000 LPG
Running Watts 4500 NG
Starting Watts 6850 Gas
Starting Watts 6250 LPG
Starting Watts 5500 NG
AC Voltage 120/240
DC Voltage 12
Frequency (Hertz) 60
Decibels 67dB 1/4 load
Run Time 14.5 hrs 1/4 load
THD @ Full Load 3%
Running Watts 5500 Gas
Running Watts 5000 LPG
Running Watts 4500 NG
Starting Watts 6850 Gas
Starting Watts 6250 LPG
Starting Watts 5500 NG
AC Voltage 120/240
DC Voltage 12
Frequency (Hertz) 60
Decibels 67dB 1/4 load
Run Time 14.5 hrs 1/4 load
THD @ Full Load 3%
Control Panel
Recoil Start Yes
Electric Start Yes
5-20R 120V 20A DUPLEX GFCI 1
TT-30R 120V 30A TWISTLOCK 1
L14-30R 120V/240V 30A TWISTLOCK (22.9A/240V/5500W) 1
14-50R 120V/240V 50A (22.9A/240V/5300W) 1
USB-C (3.1/5A/5/9/12/15/20V DC/60W) 1
12V DC Power Port/Plug (8.3A/12V DC/100W) 1x2 Prong Angled
Parallel Port Yes
Multi-Meter P-V-Hr-F-Fuel Level/Oil Alert/ Over Load
Recoil Start Yes
Electric Start Yes
5-20R 120V 20A DUPLEX GFCI 1
TT-30R 120V 30A TWISTLOCK 1
L14-30R 120V/240V 30A TWISTLOCK (22.9A/240V/5500W) 1
14-50R 120V/240V 50A (22.9A/240V/5300W) 1
USB-C (3.1/5A/5/9/12/15/20V DC/60W) 1
12V DC Power Port/Plug (8.3A/12V DC/100W) 1x2 Prong Angled
Parallel Port Yes
Multi-Meter P-V-Hr-F-Fuel Level/Oil Alert/ Over Load
Machine
Low Oil Shutoff Yes
CO Shut Off Yes
Power Stream Alternator Yes
Cast Iron Sleeve Yes
Low Oil Shutoff Yes
CO Shut Off Yes
Power Stream Alternator Yes
Cast Iron Sleeve Yes
Fuel System
Fuel Gas/LPG/NG
Tank Size 5.3 Gal.
Steel/Plastic Steel
Fuel Gas/LPG/NG
Tank Size 5.3 Gal.
Steel/Plastic Steel
Wheel Kit
Wheels 8"-Gray-plastic-flat free
Handle U shape folding handle
Wheels 8"-Gray-plastic-flat free
Handle U shape folding handle

Packaging

Unit
UPC 840876155714
Unit Dimensions 27.6x21.3x22.6
Unit Length 27.6
Unit Width 21.3
Unit Height 22.6
Unit Weight 131.4
UPC 840876155714
Unit Dimensions 27.6x21.3x22.6
Unit Length 27.6
Unit Width 21.3
Unit Height 22.6
Unit Weight 131.4
Carton
Carton Dimensions 31.5x22.8x24
Carton Length 31.5
Carton Width 22.8
Carton Height 24
Carton Weight 149.5
Carton Dimensions 31.5x22.8x24
Carton Length 31.5
Carton Width 22.8
Carton Height 24
Carton Weight 149.5

Manuals

WT05571_Manual_English

download

WT05571_Manual_Spanish

download

WT05571_Manual_French

download

WT05571_QSSG_English

download

WT05571_QSSG_Spanish

download

WT05571_QSSG_French

download
@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.