- Wattage (Gas): 3,850 W / 3,500 W
- THD: < 5%
- Noise Level: 65 dBA
- Fuel Type: Gasoline
- RV Ready: Yes
- Run Time@ 25% load: Unspecified
- Run Time@ 50% load: 10 h
- Weight: 93 lbs
Table Of Contents
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Description
The gasoline-powered 223 cc OHV 4-stroke engine is the heart of the Sportsman GEN4000iOF. It has a 120V output and a running power of 3,500W and a peak power of 3,850W. Also, since it can work in parallel (but doesn’t come with a parallel kit), its power can be increased by connecting it to a second unit that works with it. The noise level of the inverter generator is 65 dBA, which is just a little louder than a normal conversation. It is started with a pull-start mechanism. With a full tank, the GEN4000iOF can run for about 10 hours at 0.5 load, which is about 0.45 GPH (gallon per hour), because it can hold 4.5 gallons of fuel. As the GEN4000iOF makes a clean sine wave with a Total Harmonic Distortion (THD) of less than 5%, you can safely plug sensitive electronics into the AC outlets.
Outlets
On the control panel, there are 3 AC outlets for: Duplex 120V 20A (5-20R); 120V 30A (TT-30R) receptacle. It also has 2 DC outlets: two 5V USB ports that make it easy to charge devices like cell phones or tablets. This Sportsman generator is ready for an RV because it has a TT-30R plug, where TT stands for “Travel Trailer”.
Features
The lights on the device will show if the generator is ready, if it is overloaded, or if it doesn’t have enough oil. The inverter generator has a built-in fuel gauge that makes it quick, easy, and convenient to check how much gas it has. In terms of safety, the generator can be used without worry because it has a circuit breaker for overheating and an automatic shut-off when the oil level gets too low. In addition to the usual paperwork and owner’s manual to get you up and running quickly, Sportsman also included a tool kit with the GEN4000iOF.
Mobility
The Sportsman GEN4000iOF has a traditional, open frame design with dimensions of L23 x W17.5 x H20.3 in, This gives the generator stability and lets it be raised above ground level. The design shown is great for the outdoors and other rough places. The GEN4000iOF’s dry weight of 93 lbs lets you use it anywhere you need to. The generator is also easier to move because it has an open frame, which makes it easy to grab and move.
Product Videos
The following charts show how some of the most important features of the Sportsman-GEN4000iOF compare to other generators with the same power output.
**Fuel efficiency is give in relative percentage, 0 being the lowest and 1 being the highest value. Please see below specification table for actual value.
Specifications
Generic
| Inverter | Yes |
| Fuel efficiency | 0.257 gal/kWh |
| Parallel capable | Yes, cable not included |
| RV ready | Yes |
| Fuel | Gasoline |
| Engine | 223 cc OHV 4-stroke |
| Starting system | Recoil |
| Voltage | AC: 120V 60 Hz, DC: 5V |
Power
| Gasoline | Propane | |
| Running watts | 3,500 W | n/a |
| Starting watts | 3,850 W | n/a |
| Running amps (@120/240V) | 29.2 amps | n/a |
| Peak amps (@120/240V) | 32.1 amps | n/a |
| Run time @50% load | 10 h | n/a |
| Run time @25% load | Unspecified | n/a |
Control Panel
| GFCI outlets | No |
| Covered outlets | No |
| Automatic Voltage Regulator | Inverter |
| AC outlets | 1x Duplex 120V 20A (5-20R); 1x 120V 30A (TT-30R) |
| DC outlets | 2x 5V USB port |
| Data center | No |
| Indicators | Low oil, overload and output ready |
| Fuel tank | 4.5 gal |
| Fuel gauge | Yes |
Mixed
| Weight | 93 lbs |
| Approx. dimen. (L x W x H) | 23 x 17.5 x 20.3 in |
| Noise (lower limit) | 65 dBA |
| THD | < 5% |
| Compliance | EPA |
| Security | Low oil and overload protection |
| Spark arrestor | Yes |
| Accessories included | Tool kit |
| Warranty | 1 year |
- We compared more than 500 portable generators at 50% load. We found that there is “skewed right” distribution for the difference between 50% load and 25% load and the median comes at 1.43. With this number we converter all the 25% load runtime to 50% load. Same with the propane efficiency, where median is 1.38.
- For some generators where propane runtime was not given, we used NIST 1994 GGE (Gasoline Gallon Equivalent) formula: 5.66 lbs. of propane = 1 gal of gasoline. All propane runtime is for 20 lbs. propane tank (4.7 gallons).
- Unlike many other sites, we actually tried to find out information about each of the above requirements. However, we are human and are therefore capable of the odd oversight or mistake. Please let us know if you spot any missing or erroneous values so that we can fix them.
About the Manufacturer
The US-based Buffalo firm is the registered owner of the minor brand known as Sportsman Series. The Buffalo Corporation is a small business that distributes tools and household goods. It was established in 1964. They provide products under the labels AmeriHome, Black Bull, Buffalo Tools, and Sportsman Series, which includes a variety of generators and other everyday items. The company, in fact, appears to outsource all of its production to foreign countries and simply serves as a distributor for its own brands.
Warranty Information
A warranty covers the Sportsman GEN4000iOF for up to a year. This warranty may not cover all parts of the generator or may only cover certain parts. Contact Buffalo Tools Customer Support at 1-636-532-9888 for more information about Sportsman generator warranties. Check Sportsman Website for more information.
