A yellow and black FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert portable generator with multiple outlets and control buttons, mounted on a wheeled frame for easy transport—ideal for camping outdoors.
On a grassy lawn, the FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W sits against a backdrop of a red-roofed barn. This yellow and black generator with CO Alert and recoil start is ideal for camping, promising reliable power wherever adventures lead.
Someone is moving a yellow and black FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert on wheels across a paved surface, against a backdrop of wood and stone. Ideal for outdoor camping, it provides reliable power wherever you go.
The fuel-efficient FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert, featuring a distinct yellow and black design, is shown in front of a modern house during lightning.
The image features a FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W with a 6.0-gallon tank, recoil start, multiple outlets, CO Alert for safety, and 9" wheels for easy portability—ideal for reliable power on the go.
Image of included items with FIRMAN Power Equipment's Inverter Open Frame Portable Generator 4500W: tool kit, fuel-efficient design, oil funnel, engine oil, charger cable, U-shaped handle, parallel cable, 9" durable wheels, operator's manual, quick start guide.
The FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with yellow wheels and casing includes a bonus L5-30P to TT-30R adapter, offers fuel-efficient operation, and features CO Alert, making it perfect for on-the-go use.
The FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert features a control panel diagram with labeled elements: economy switch, fuel-efficient reset button, data minder, indicator lights, shutdown button, operational outlets, and sockets for renewable power connections.
The FIRMAN Inverter Open Frame Portable Generator 4500W Recoil Start features a CO Alert system with an indicator light for engine shutdown due to carbon monoxide or faults, and offers a yellow and black fuel-efficient design with control panel and wheels for clean power on the go.
FIRMAN Power Equipment's Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert is highlighted against a vibrant yellow and gray backdrop, emphasizing its fuel efficiency and versatility for powering portable A/C, power tools, RV camping, appliances, smartphones, and laptops.
Image of the FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W, featuring a three-year warranty and described as industry-leading—ideal for clean renewable power during outdoor camping.
The FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert measures 23x24.1x24.5 inches, weighs 106 lbs, includes wheels and multiple outlets, making it perfect for reliable outdoor camping power.
Flowchart titled "What Size Generator Do You Need?" guides you through four steps: list devices, sum running watts, identify the highest starting watts, and add totals. Ideal for those camping with the FIRMAN Inverter Open Frame Portable Generator 4500W for clean renewable power options.
A yellow and black FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert portable generator with multiple outlets and control buttons, mounted on a wheeled frame for easy transport—ideal for camping outdoors.
On a grassy lawn, the FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W sits against a backdrop of a red-roofed barn. This yellow and black generator with CO Alert and recoil start is ideal for camping, promising reliable power wherever adventures lead.
Someone is moving a yellow and black FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert on wheels across a paved surface, against a backdrop of wood and stone. Ideal for outdoor camping, it provides reliable power wherever you go.
The fuel-efficient FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert, featuring a distinct yellow and black design, is shown in front of a modern house during lightning.
The image features a FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W with a 6.0-gallon tank, recoil start, multiple outlets, CO Alert for safety, and 9" wheels for easy portability—ideal for reliable power on the go.
Image of included items with FIRMAN Power Equipment's Inverter Open Frame Portable Generator 4500W: tool kit, fuel-efficient design, oil funnel, engine oil, charger cable, U-shaped handle, parallel cable, 9" durable wheels, operator's manual, quick start guide.
The FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with yellow wheels and casing includes a bonus L5-30P to TT-30R adapter, offers fuel-efficient operation, and features CO Alert, making it perfect for on-the-go use.
The FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert features a control panel diagram with labeled elements: economy switch, fuel-efficient reset button, data minder, indicator lights, shutdown button, operational outlets, and sockets for renewable power connections.
The FIRMAN Inverter Open Frame Portable Generator 4500W Recoil Start features a CO Alert system with an indicator light for engine shutdown due to carbon monoxide or faults, and offers a yellow and black fuel-efficient design with control panel and wheels for clean power on the go.
FIRMAN Power Equipment's Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert is highlighted against a vibrant yellow and gray backdrop, emphasizing its fuel efficiency and versatility for powering portable A/C, power tools, RV camping, appliances, smartphones, and laptops.
Image of the FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W, featuring a three-year warranty and described as industry-leading—ideal for clean renewable power during outdoor camping.
The FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert measures 23x24.1x24.5 inches, weighs 106 lbs, includes wheels and multiple outlets, making it perfect for reliable outdoor camping power.
Flowchart titled "What Size Generator Do You Need?" guides you through four steps: list devices, sum running watts, identify the highest starting watts, and add totals. Ideal for those camping with the FIRMAN Inverter Open Frame Portable Generator 4500W for clean renewable power options.
01/01
Certification: Certification CARB Certification cETL Certification EPA
Model: w03661of

Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert
$599.99 USD $999.99 USD
Free Shipping on all Generators
SERIES Inverter
TYPE Open Frame Inverter

At FIRMAN, we've got you covered no matter what situation you have to tackle.

The FIRMAN W03661OF portable inverter generator is quiet and fuel-efficient, providing clean, renewable power for electronics and sensitive equipment.

The W03661OF generator is a complete power station that is ready to work whenever you may need it, during any event, regardless of the circumstance.

It's the ideal candidate and the perfect option for those who enjoy camping outdoors, tailgating, or need portable power for home.

The W03661OF comes with an engine oil bottle, oil funnel, spark plug wrench, a double open-ended wrench (10mm,12mm), 12V battery cable, adaptor, parallel cable, remote holder, and parallel cable holder.

LEGENDARY FIRMAN ENGINEERING

  • 208cc engine
  • Recoil start
  • Low oil shut off
  • Cast iron sleeve
  • Running watts 3650W 
  • Starting watts 4500W 
  • 120 volts

 

PERFORMANCE IN A LEAGUE OF ITS OWN

  • Up to 22 hours of runtime at 25% load
  • 6-gallon tank
  • Eco mode varies engine speed depending on load for maxim fuel efficiency 
  • Weight: 106 lbs
  • 67dB ¼ load

FEATURES YOU EXPECT FROM FIRMAN

3-year warranty

Multi-featured control panel with covered outlets

  • (1) 5-20R 120V 20A DUPLEX
  • (1) L5-30R 120V 30A TWISTLOCK
  • (1) 14-50R 120V/240V 50A (15.2A/120V/3650W)
  • (1) USB-A (2.1A/5V DC/10W)
  • (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. 

3650

Running Watts

4500

Starting Watts

208

FIRMAN Engine

6 Gallon Gas Tank

22 Hrs Run Time

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Manuals

W03361OF Operators Manual

download

W03661OF Quick Start / Stop Guide (English)

download

W03661OF Quick Start / Stop Guide (Spanish)

download

W03661OF Quick Start / Stop Guide (French)

download

Watch

W03661OF Overview

Watch

W03661OF Maintenance

Watch

W03661OF Unboxing

@FIRMANpowerequipment
Image of a Woman holding a handle to an Inverter Generator and walking towards a pick up truck and trailer cart.
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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.