Firman H05751 - 5700/7125W Dual Fuel Generator With Electric Start
The Firman H05751 is a portable open frame dual fuel generator with a rated wattage of 5,700 W and a starting wattage of 7,125 W. (Read full specs)
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Description
The H5751 Dual fuel generator can run on both Gas and Liquid Propane fuel, giving you flexibility during a storm, or when you’re out camping. This generator 7100 starting Watts and 5700 running watts for both gasoline and LP with an electric start, for ease of use.
Zoom on the Firman H05751
In a nutshell, the Firman H05751 is a portable generator mostly geared towards:
- RV travellers looking for even more independence
- People occasionally participating in sporting competitions, open-air performances and outdoor festivals
- Food truck owners who do not wish to see their business interrupted under any circumstances
- Homeowners in need of an emergency backup power for their essentials
- Professionals in need of safely powering high-intensity work or lighting equipment
The following sections will present you in detail its power characteristics, the different outlets it offers, its overall portability, and the extra features it benefits from.
Power & Run Time
Delivering 120/240V, the Firman H05751 is enhanced by dual-fuel technology, providing power and versatility. Running on gasoline, it boasts a running wattage of 5,700W and a starting wattage of 7,125W. Alternatively, when propane-powered, it delivers 5,700 running watts and 7,125 starting watts.
Enjoying a noise rating of 74 dBA (just slightly more noisy than a dishwasher), this generator can be started thanks to a simple traditional pull-start mechanism, but also to a user-friendly and efficient electric starter (battery included).
Regarding its running time, the H05751, with a 8 gallons fuel tank, can operate for around 12 hours at 50% load with a full gasoline tank (with fuel consumption estimated at around 0.67 gallons per hour). It also offers around 5 hours (estimation based on a 20 lbs tank - propane consumption around 0.94 GPH) of operation when using propane.
As the H05751 has a high THD (<25%), it is not recommended to use it to power sensitive electronic devices.
Outlets
The control panel features the following 6 AC outlets:
While not classified as 'RV Ready,' this Firman generator can still provides the advantage of RV connection via its L5-30R receptacle, ensuring power supply to your RV with an L5-30P to TT-30R adaptor. Besides, thanks to its twist-lock L14-30R receptacle, the H05751 is transfer switch ready, facilitating easy hookup to your breaker box to provide backup power for your home during blackouts.
Portability
Measuring L30.2 x W27.5 x H26.3 in, the classic open frame build of the Firman H05751 delivers stability and easy maintenance access to components, facilitating air circulation. This type of design is ideal for tough environments and heavy outdoor use.
While technically classified as 'portable' due to its ability to be moved, the 194.5 lbs of this generator may make manual lifting and transportation somewhat difficult. However, the constrained maneuverability is addressed with the assistance of its wheel kit (⌀10") and its folding handle, allowing for easy shifting once the generator is placed on the ground.
Features
The H05751's status and activity may be monitored conveniently via the control panel, as it features a convenient meter, providing voltage, frequency, and lifetime hours data.
The fuel level of the generator can be determined quickly, easily, and conveniently with the help of its built-in fuel gauge.
As far as security is concerned, the generator can be used with a peace of mind, as it features an automatic low oil shut-off and an overload protection (circuit breaker).
While the standard documentation and an owner's manual (opens in a new tab), helpful for starting the device promptly, come with the Firman H05751, the following accessories are also included: oil, propane hose, tool kit and funnel.
Product Videos
The Firman H05751 versus other generators
The following charts are provided to give you an idea of how some of the key specs of the Firman H05751 compare to dual fuel generators of similar power (between 5500 and 6500 W).
- Weighing in at 194.5 lbs, the Firman H05751 is one of the heavier dual fuel generators available in the 5500-6500 rated wattage segment. If weight is a key factor for your needs, the Pulsar PGDA70BiSCO is noteworthy for being one of the top contenders in this power range, with a dry weight of 118 pounds.
- As this generator can emit noise as low as 74 dBA, it finds itself in the average expected noise for this kind of power. If noise emissions are one of your priorities, you may be interested in the Pulsar PGDA70BiSCO, one of the least noisy generators similarly powerful as this one, rated for 62 dBA.
- With around 12 hours of runtime at 50% load, the H05751 provides a one of the highest run times when compared to similarly powerful dual fuel products.
- While run time is vital, it hinges on the fuel capacity. To grasp the full picture, we must also factor in fuel efficiency. In terms of fuel efficiency within its wattage range, this generator falls short: it consumes approximately 0.67 GPH at a 50% load. If gasoline efficiency is at the top of your list, you may want to have a look at the DuroMax XP7000iH, which has great fuel efficiency, with a gas consumption of only 0.38 gallons per hour.
The bottom line
- Dual fuel
- Several accessories included
- GFCI Outlets
- Electric start
- High run time
- Acceptable noise (74 dBA)
- No remote start
- On the heavy side (194.5 lbs)
- Low fuel efficiency
Features and Specifications
| Inverter | No |
|---|---|
| Parallel capable | No |
| RV ready | No |
| Fuel | Dual Fuel (gasoline/propane) |
| Engine | 439 cc Firman Max-Pro Series OHV 4-stroke, cast iron sleeve |
| Starting system | Recoil, Electric |
| Warranty | 3 years |
| Voltage | AC: 120/240V 60 Hz |
| Gasoline | Propane | |
|---|---|---|
| Running watts | 5,700 W | 5,700 W |
| Starting watts | 7,125 W | 7,125 W |
| Running amps (@120/240V) | 47.5/23.8 amps | 47.5/23.8 amps |
| Peak amps (@120/240V) | 59.4/29.7 amps | 59.4/29.7 amps |
| Run time @50% load | 12 h | 5 h * |
| Run time @25% load | Unknown | Unknown |
| GFCI outlets | Yes |
|---|---|
| Covered outlets | Yes |
| Automatic Voltage Regulation | Yes |
| AC outlets |
|
| DC outlets | No |
| Data center | VFT |
| Indicators | No |
| Fuel tank | Steel, 8 gal |
| Fuel gauge | Yes |
| Weight | 194.5 lbs |
|---|---|
| Approx. dimensions (L x W x H) | 30.2 x 27.5 x 26.3 in |
| Noise (lower limit) | 74 dBA |
| THD | < 25% |
| Compliance | CARB, EPA |
| Security | Low oil and overload protection |
| Spark arrestor | Yes |
| Neutral | Bonded to frame |
| Accessories included | Oil, funnel, tool kit, propane hose, battery, and wheel kit |
| Country of origin | China |
| Series | Hybrid |
| UPC | 840876157510 |
We've taken extra care to research and verify each of the specifications above. That said, occasional mistakes or omissions are still possible. If you spot any missing or inaccurate information, feel free to suggest a correction so we can address it.
* Propane runtime is our own estimate, based on a 20 lbs tank and NIST 1994 GGE (Gasoline Gallon Equivalent) formula: 5.66 lbs of propane = 1 gal of gasoline.
About FIRMAN Power Equipment
Founded in 1999, Firman Power Equipment is a company with a short, but established history in the power equipment industry. Based in Arizona, the company offers an immense range of products, including power tools, automotive equipment, storage utilities, work wear, but most importantly, a wide selection of generators of all sizes, designs and outputs. Interestingly, Firman is a wholly owned subsidiary of the China National Machinery Industry Corporation - a somewhat well renowned company in China and acts as a de facto distributor of their products in the US.
Warranty Information
The Firman H05751 is covered under a warranty for up to 3 years. This warranty may be limited and may not cover all parts of the generator.
For more information about the warranty of Firman generators, please consult Firman's warranty policies (opens in a new tab). Alternatively, you can also contact their Customer Support: 1-844-FIRMAN1 (844-347-6261).
Questions & Answers
What can it power?
| Item | Running Watts | Starting Watts | |
|---|---|---|---|
| At home | Dish washer | 1500 | 3000 |
| Microwave (1000 watts) | 1500 | 1500 | |
| Electric fry pan | 1500 | 1500 | |
| Set of 5 LED light bulbs | 55 | 55 | |
| Total | 4555 W | 6055 W | |
| For camping | RV AC (11,000 BTU) | 1010 | 1600 |
| RV refrigerator | 180 | 600 | |
| Hair dryer | 1800 | 1900 | |
| Electric fry pan | 1500 | 1500 | |
| Set of 5 LED light bulbs | 55 | 55 | |
| Total | 4545 W | 5135 W | |
| For work | Table saw | 1800 | 4500 |
| Grinder | 1400 | 2500 | |
| Disc sander | 1200 | 1200 | |
| Total | 4400 W | 7100 W |
Couldn't find the right answer for you? Ask your own question.



