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Sportsman GEN4000iOF Spec Review

The Sportsman GEN4000iOF is a compact open frame portable inverter generator with a rated wattage of 3500 W and a starting wattage of 3850 W.

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Description

Zoom on the Sportsman GEN4000iOF

In summary, the Sportsman GEN4000iOF is a compact portable inverter generator especially useful for:

  • RV travellers who wish to upgrade their experience to another level
  • People occasionally participating in sporting competitions, open-air performances and outdoor festivals
  • Amateur DIY lovers
  • Homeowners who want to be sure of their ability to power their fridges, cooking tools, heating and lighting equipment during power failures
  • Tailgating and campground aficionados with the desire of enjoying power anywhere they go

In the sections ahead, the power characteristics, availability of various outlets, the portability, and any additional features of the device shall be discussed, including its emission compliance information.

Power & Run Time

The Sportsman GEN4000iOF's design includes a gasoline-fueled 223 cc (6.5 hp) OHV 4-stroke engine. With a 120V output, it gives a running wattage of 3500W and also a peak wattage of 3850W. Additionally, as the generator is parallel capable (parallel kit not included), it can be linked to a second unit for more power.

Enjoying a noise rating of 65 dBA (just slightly more noisy than a normal conversation), this inverter generator gets running thanks to a conventional pull-start mechanism.

The fuel capacity of 4.5 gallons allows the GEN4000iOF to operate for around 10 hours at 50% load with a full tank (fuel consumption around 0.45 GPH).

As the GEN4000iOF produces a clean sine wave, with a <5% Total Harmonic Disruption (THD), sensitive electronics may be plugged in the AC outlets safely.

Outlets

The control panel includes the following 3 AC outlets:

Duplex 120V 20A (5-20R)
120V 30A (TT-30R) receptacle

Furthermore, it has 2 DC outlets: there's two 5V USB ports with which charging of electronics like mobile phones and tablets is made convenient.

With its TT-30R receptacle (TT as in 'Travel Trailer'), this Sportsman generator is RV Ready.

Portability

The Sportsman GEN4000iOF has the following dimensions: L23 x W17.5 x H20.3 in. In combination with its conventional, open frame design, they provide support and allow the generator to be raised above ground level. The device has been designed for tough environments and demanding outdoor use.

As the GEN4000iOF's weight is only 93 lbs, it can follow you and your power needs anywhere. Moreover, its open frame design makes it incredibly easy to grab the frame in order to change its location.

Features

Panel of the Sportsman GEN4000iOF

The GEN4000iOF's control panel

The light indicators show you if the generator is on overload, the oil level is too low and the generator is ready.

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

From a security point of view, the generator is equipped with an overload protection (circuit breaker) and an automatic low oil shut-off, giving you a peace of mind during use.

Besides the usual set of documentation and owner's manual to get you promptly started, Sportsman also included a tool kit in the GEN4000iOF's packaging.

Emissions

The Sportsman GEN4000iOF is EPA approved, but NOT CARB-compliant. Thus, it cannot be purchased or sold in California.

However, it features a spark arrestor, making it usable in forested areas.

The Sportsman GEN4000iOF versus other generators

The following charts are provided to give you an idea of how some of the key specs of the Sportsman GEN4000iOF compare to generators of similar power (between 3000 and 4000 W).

  • Weight-wise, the Sportsman GEN4000iOF has only 93 lbs, which renders it one of the lighter generators which produce 3000 to 4000 rated watts. In terms of weight, one of the champions in their power range is the WEN GN400i, standing at just 66.1 lbs.
  • The inverter generator can be considered average in its noise for its power category, as it is rated at 65 dBA. If you are concerned with noise, check out the Cat INV4000E, which is one of the least noisy generators in its power range, with a noise rating of just 51 dBA.
  • Autonomy-wise, with around 10 hours on a full tank at a 50% load, the GEN4000iOF is on the low end when compared to other generators of a similar power output. If autonomy is your priority, one of the devices of a similar power output with the highest run time is the Honda EB4000X, reaching around 16 hours.
  • Run times are important, yet thanks to their dependence on the fuel capacity, they should be judged along with the fuel consumption of the device. This inverter generator is rather wasteful, compared to other devices within the aforementioned output range, when it comes to gasoline consumption, as it reaches roughly 0.45 GPH at a 50% load. If not satisfied with the afore-mentioned fuel consumption, you may wish to check out the Westinghouse iGen4200. With a fuel consumption of as little as 0.17 GPH, it is one of the most efficient generators currently on the market.

Price comparison

As you can see from this interactive chart, when compared to other 3000-4000W generators, the Sportsman GEN4000iOF is on the average side of the price range.

Therefore, this generator nicely fits in the expected budget for this kind of product.

The bottom line

STRENGTHS:
  • In the expected price range
  • RV Ready
  • Parallel capable
  • Inverter
  • Lightweight for its kind (93 lbs)
AVERAGE SPECS:
  • Acceptable noise (65 dBA)
WEAKNESSES:
  • No data center
  • No electric start
  • Not CARB-compliant
  • Relatively low run time
  • Low fuel efficiency

Do you own the Sportsman GEN4000iOF and agree (or disagree) with these strengths and weaknesses?

Let us know and write your own review.

Features and Specifications

General
InverterYes
PortableYes
Parallel capableYes, cable not included
RV readyYes
FuelGasoline
Engine223 cc OHV 4-stroke
Starting systemRecoil
Power
VoltageAC: 120V 60 Hz, DC: 5V
Running watts3500 W
Starting watts3850 W
Running amps29.2 amps
Peaks amps32.1 amps
Run time @50% load10 h
Run time @25% loadUnknown
Features
GFCI outletsNo
Covered outletsNo
Automatic Voltage RegulationInverter
AC outlets
  • 1x Duplex 120V 20A (5-20R)
  • 1x 120V 30A (TT-30R)
DC outlets2x 5V USB port
Data centerNo
IndicatorsLow oil, overload and output ready
Fuel tank4.5 gal
Fuel gaugeYes
Misc
Weight93 lbs
Approx. dimensions (L x W x H)23 x 17.5 x 20.3 in
Noise (lower limit)65 dBA
THD< 5%
EmissionsEPA
SecurityLow oil and overload protection
Spark arrestorYes
Accessories includedTool kit
Warranty1 year

Unlike many websites, we did our best to research each of the specs above. That being said, we are not immune to making the occasional mistake or omission. Should you notice any missing or incorrect values, don't hesitate to suggest improvements so we can address the issue.

About Sportsman Series

Sportsman Series is a small brand registered under the US based Buffalo corporation. Founded in 1964, the Buffalo Corporation is a small company, which sells tools and home products. Their brands include AmeriHome, Black Bull, Buffallo Tools and Sportsman Series – which offers a selection of generators and several other general products. The brand, and in fact, the corporation itself seemingly outsources all of its production overseas and acts only as a distributor, under its own brands.

Warranty Information

The Sportsman GEN4000iOF is covered under a warranty for up to 1 year. This warranty may be limited and may not cover all parts of the generator.
For more information about the warranty of Sportsman generators, please contact the Sportsman Customer Support: 1-636-532-9888.

Questions & Answers

What can it power?
Examples of items that can be simultaneously powered.
The examples below are based on a maximum load of 80% and estimated wattages. For a more accurate estimation, use our generator size calculator.
ItemRunning WattsStarting Watts
At homeRefrigerator (energy star)1921192
Hair dryer18001900
Toaster oven800800
Total2792 W3792 W
For campingRadiant heater13001300
RV refrigerator180600
RV AC (11,000 BTU)10101600
Slow cooker270270
Cell phone charger2020
Total2780 W3370 W
For workGrinder14002500
Demolition hammer12601260
Bug zapper8080
Total2740 W3840 W

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