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.
Image of a FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert, perfect for camping outdoors, highlighting key features: 4500 starting watts, 3650 running watts, 6.0-gallon tank, 22 hours runtime at 50% load, 208cc OHV engine, carbon monoxide alert system, and 3-year warranty.
Image showing items included with a FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert: a tool kit, 9" never-flat wheels, padded U-shaped handle, engine oil, oil funnel, parallel cables, and charger cable. Perfect for camping outdoors or providing clean renewable power for your devices.
A yellow and black FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert sits on the grass with a red-roofed barn and green trees in the background, perfect for camping outdoors.
A portable yellow and black FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert is parked outdoors on a paved surface, with trees in the background. Perfect for camping outdoors, this device ensures you have reliable power wherever you go.
A FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert with a yellow and black design on a wheeled frame, perfect for camping outdoors, featuring control panels, various outlets, a handle, and engine information labels.
Image of a FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert with a black and yellow design. Ideal for camping outdoors, the front panel displays model number W036610F and power specifications of 4200 starting watts and 3650 running watts.
A portable yellow and black FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert model W03661OF with a visible engine and black handle. It features a sturdy frame, two wheels for mobility, and various labeled control panels—ideal for camping outdoors.
Rear view of a FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert with a 208cc engine, framed structure, and visible control panel. Perfect for camping outdoors, the generator is mounted on two large wheels for easy mobility.
A FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert is displayed outdoors, alongside its user manuals, cables, and accessories on a paved surface. The generator features yellow and black coloring, with a control panel and wheels visible—perfect for camping outdoors with clean renewable power.
An image of the FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert, ideal for camping outdoors, with a focus on an L5-30P to TT-30R adapter included as a bonus item.
A yellow and black FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert with wheels and a handle for easy mobility, perfect for camping outdoors. The control panel features multiple sockets and switches, while the model number W03681OF is visible on the top.
A top view of a yellow FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert shows multiple warning labels, a large circular dial, and wheels on one side, perfect for camping outdoors.
A portable, wheeled FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert with multiple power outlets and a yellow and black color scheme, perfect for camping outdoors. This clean, renewable power source ensures your adventures remain energy-efficient.
A yellow and black FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert, featuring large wheels for mobility and multiple outlets for power connections—perfect for camping outdoors.
A yellow and black Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert with wheels and multiple outlets, perfect for camping outdoors. The brand "FIRMAN Power Equipment" is visible on the unit.
Technical drawing of a FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert with dimensions labeled as 24.5 inches in width and 23.0 inches in height, displaying control panel details and one wheel for mobility—ideal for camping outdoors.
Technical drawing of a FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert, viewed from the front, displaying internal components and measuring 24.1 inches in width, ideal for camping outdoors.
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.
Image of a FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert, perfect for camping outdoors, highlighting key features: 4500 starting watts, 3650 running watts, 6.0-gallon tank, 22 hours runtime at 50% load, 208cc OHV engine, carbon monoxide alert system, and 3-year warranty.
Image showing items included with a FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert: a tool kit, 9" never-flat wheels, padded U-shaped handle, engine oil, oil funnel, parallel cables, and charger cable. Perfect for camping outdoors or providing clean renewable power for your devices.
A yellow and black FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert sits on the grass with a red-roofed barn and green trees in the background, perfect for camping outdoors.
A portable yellow and black FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert is parked outdoors on a paved surface, with trees in the background. Perfect for camping outdoors, this device ensures you have reliable power wherever you go.
A FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert with a yellow and black design on a wheeled frame, perfect for camping outdoors, featuring control panels, various outlets, a handle, and engine information labels.
Image of a FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert with a black and yellow design. Ideal for camping outdoors, the front panel displays model number W036610F and power specifications of 4200 starting watts and 3650 running watts.
A portable yellow and black FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert model W03661OF with a visible engine and black handle. It features a sturdy frame, two wheels for mobility, and various labeled control panels—ideal for camping outdoors.
Rear view of a FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert with a 208cc engine, framed structure, and visible control panel. Perfect for camping outdoors, the generator is mounted on two large wheels for easy mobility.
A FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert is displayed outdoors, alongside its user manuals, cables, and accessories on a paved surface. The generator features yellow and black coloring, with a control panel and wheels visible—perfect for camping outdoors with clean renewable power.
An image of the FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert, ideal for camping outdoors, with a focus on an L5-30P to TT-30R adapter included as a bonus item.
A yellow and black FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert with wheels and a handle for easy mobility, perfect for camping outdoors. The control panel features multiple sockets and switches, while the model number W03681OF is visible on the top.
A top view of a yellow FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert shows multiple warning labels, a large circular dial, and wheels on one side, perfect for camping outdoors.
A portable, wheeled FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert with multiple power outlets and a yellow and black color scheme, perfect for camping outdoors. This clean, renewable power source ensures your adventures remain energy-efficient.
A yellow and black FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert, featuring large wheels for mobility and multiple outlets for power connections—perfect for camping outdoors.
A yellow and black Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert with wheels and multiple outlets, perfect for camping outdoors. The brand "FIRMAN Power Equipment" is visible on the unit.
Technical drawing of a FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert with dimensions labeled as 24.5 inches in width and 23.0 inches in height, displaying control panel details and one wheel for mobility—ideal for camping outdoors.
Technical drawing of a FIRMAN Power Equipment Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert, viewed from the front, displaying internal components and measuring 24.1 inches in width, ideal for camping outdoors.
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Certification: Certification CARB Certification cETL Certification EPA
Model: w03661of

Inverter Open Frame Portable Generator 4500W Recoil Start with CO Alert
$999.99 USD $1,209.99 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 x 5-20R 120V 20A DUPLEX
  • 1 x L5-30R 120V 30A TWIST LOCK
  • 1 x 14-50R 120V/240V 50A
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

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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.
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.