Firman T04073 - 4000/5000W Tri Fuel Generator With Electric Start

In short, the Firman T04073 is a portable generator adequately designed for:

• RV travellers looking for even more independence
• Occasional participants of outdoor events, competitions, concerts and festivals
• Homeowners in need of an emergency backup power for their essentials
• Professionals who want to be able to deliver results, even during a power failure

In the following paragraphs, we shall explore the power characteristics, available outlets, portability, and any additional features of the device.

Power & Run Time

The Firman T04073

The Firman T04073 delivers 120/240V and boasts with a tri-fuel technology enabling it to utilize gasoline, propane, or natural gas. When powered by gasoline, it achieves a running wattage of 4,000W and a peak wattage of 5,000W. Upon using propane, it gains 3,600 rated watts and 4,500 peak watts. Its operation with natural gas provides 3,200W of rated wattage and 4,000W of starting wattage.

Enjoying a noise rating of 67 dBA (less noisy than a normal conversation), this generator offers the versatility of starting with either a standard recoil pull-rope starting mechanism or an easy-to-use and reliable electric starter (battery included).

Concerning its running time, the T04073, featuring a 5 gallons fuel tank, can continuously run for around 14 hours at 50% load with a full gasoline tank (consuming fuel at approximately 0.36 gallons per hour). Alternatively, when utilizing propane, it offers around 9 hours (on a 20 lbs tank - propane consumption around 0.52 GPH) of runtime.

The powering of sensitive electronic devices with the T04073 is not recommended due to its relatively high THD (<14%).

Outlets

The control panel is equipped with the following 4 AC outlets:

Even if this Firman generator isn't quite RV Ready, it still allows for an easy RV connection via an L5-30P to TT-30R adaptor (included), thanks to its L5-30R receptacle. Besides, as it features a twist-lock L14-30R receptacle, the T04073 is transfer switch ready: in case of a power outage, you will be easily able to connect it to a breaker box and power your household.

Portability

Measuring L29.8 x W27.5 x H26.1 in, the classic open frame build of the Firman T04073 delivers stability and easy maintenance access to components, facilitating air circulation. The featured design is ideal for the outdoors and all tough environments.

Even at 123.4 lbs, the generator is categorized as 'portable,' suggesting its movability, although its weight impede its portability. Nevertheless, the restricted maneuverability is counteracted by its wheel kit (⌀8") and its folding handle, enabling easy shifting once the generator is set in place.

Features

The T04073's control panel

The T04073 and its control panel include a convenient meter, offering voltage, frequency, and lifetime hours readings. This feature comes handy when monitoring its status and activity.

In addition to this info, a light indicator serves to show you when the generator is ready.

The fuel level of the generator can be determined quickly, easily, and conveniently with the help of its built-in fuel gauge.

From a security standpoint, the generator is furnished with an overload protection (circuit breaker) and an automatic low oil shut-off, ensuring peace of mind during operation.

The T04073 also benefits from Firman’s CO Alert carbon monoxide shutdown, which automatically shuts down the engine when harmful levels of carbon monoxide accumulate around the generator or a CO Alert fault occurs.

Beyond the standard documentation and an owner's manual (opens in a new tab) to assist with setup, the Firman T04073 ships with supplementary accessories: tool kit, cover, RV adapter, funnel, oil and propane hose.