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Sportsman GEN4000iOF - 3500/3850W Open Frame Inverter Generator

The Sportsman GEN4000iOF is a compact open frame inverter generator with a rated wattage of 3,500 W and a starting wattage of 3,850 W.

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Price History
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Price history for the Sportsman GEN4000iOF
Latest updates:
  • $599.99 - February 14, 2024
  • $899.99 - February 13, 2024
  • $599.99 - February 9, 2024
  • $399.99 - December 5, 2023
  • $499.99 - November 22, 2023
  • $599.99 - November 8, 2023
  • $899.99 - October 17, 2023
  • $999.99 - October 14, 2023
Data source: tractorsupply.com
Since: April 15, 2023
  • Highest Price: $999.99 - May 2, 2023
  • Lowest Price: $399.99 - December 5, 2023

Description

Zoom on the Sportsman GEN4000iOF

In a nutshell, the Sportsman GEN4000iOF is a compact portable inverter generator mostly geared towards:

  • RV travellers wishing to enhance their freedom and nomad lifestyle
  • Occasional participants of outdoor events, competitions, concerts and festivals
  • DIYers who wish to improve their efficiency with tools
  • Homeowners in need of an emergency backup power for their essentials
  • Camping and tailgating hobbyists looking for a portable power source

The following sections will present you in detail its power characteristics, the different outlets it offers, its overall portability, the extra features it benefits from, and any relevant emission compliance details.

Power & Run Time

The Sportsman GEN4000iOF in use

The Sportsman GEN4000iOF

The Sportsman GEN4000iOF houses a 223 cc (6.5 hp) OHV 4-stroke engine, which provides 120V, consumes gasoline and delivers a running wattage of 3,500W along with a peak wattage of 3,850W. Moreover, since it is parallel capable (parallel kit not included), its power may be increased if linked to a second compatible unit.

The inverter generator is rated for a noise of 65 dBA (just slightly more noisy than a normal conversation). Its starting mechanism is based on a simple traditional pull-start mechanism.

With a fuel capacity of 4.5 gallons, the GEN4000iOF may run for around 10 hours at 50% load with a full tank (fuel consumption around 0.45 GPH).

Sensitive electronics can be safely plugged in the AC outlets, as the GEN4000iOF produces a clean sine wave, with a <5% Total Harmonic Distortion (THD).

Outlets

The control panel includes the following 3 AC outlets:

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

It also sports 2 DC outlets: there's two 5V USB ports with which you may charge electronics, for example mobile phones or tablets, conveniently.

Thanks to its TT-30R receptacle (TT stands for 'Travel Trailer'), this Sportsman generator is RV Ready.

Portability

With its dimensions of L23 x W17.5 x H20.3 in, the conventional, open frame design of the Sportsman GEN4000iOF offers stability and allows the generator to be raised above ground level. The featured design is ideal for the outdoors and all tough environments.

The 93 lbs of the GEN4000iOF's dry weight enables you to use it anywhere you will ever need. 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

Several light indicators serve to show you when the generator is on overload, its oil levels are insufficient and the generator is ready.

The inverter generator includes a built-in fuel gauge, a quick, easy and convenient method of checking the device’s gas level.

As far as security is concerned, the generator can be used with a peace of mind, as it features an overload protection (circuit breaker) and an automatic low oil shut-off.

Besides the usual set of documentation and owner's manual (opens in a new tab) 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 and thus, may be used in forested areas.

Product Video

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 inverter generators of similar power (between 3000 and 4000 W).

  • Since the generator weighs in at a dry weight of 93 lbs, the Sportsman GEN4000iOF belongs in the expected weight range for inverters which can produce between 3000 and 4000 rated watts. Regarding dry weight, one of the champions in the same power range is the Pulsar PGD40iSCO, with a dry weight of only 46 lbs.
  • This inverter generator, with its lowest possible noise rated at 65 dBA falls into the more noisy category, compared to other devices of a similar running wattage. If noise emissions are important to you, one of the least noisy generators of this power range is the Westinghouse iGen4500DF with only 52 dBA.
  • Given that the GEN4000iOF reaches an autonomy of around 10 hours with a full tank and at 50% load, it is placed within the average autonomy range of similarly powerful inverter generators. Furthermore, considering the run times, one of the generators which have a roughly same power output, with the highest autonomy, is the Westinghouse iGen4500DF, as it provides around 15 hours.
  • Even though run times are undoubtedly important, they are dependent on the fuel capacity to a large extent. For a more wholesome picture, we must take into consideration the fuel consumption of the generator. In fact, this inverter generator is not among the most fuel efficient, within the aforementioned wattage range : its estimated gasoline consumption at 50% load is around 0.45 GPH. If you are concerned with gasoline efficiency, having a fuel consumption of just 0.22 GPH, the Pulsar PGD40iSCO is a device you could look out for.

Price comparison

As you can see from these interactive charts, when compared to other 3000-4000W inverter generators, the Sportsman GEN4000iOF is on the cheap side of the price range.

It can therefore be a really good buy if you're looking to acquire a budget generator.

The bottom line

STRENGTHS:
  • Inexpensive
  • RV Ready
  • Parallel capable
  • Inverter
AVERAGE SPECS:
  • Decent weight (93 lbs)
  • Decent run time
WEAKNESSES:
  • No data center
  • No electric start
  • Not CARB-compliant
  • 1-year warranty
  • On the noisy side (65 dBA)
  • 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
Parallel capableYes, cable not included
RV readyYes
FuelGasoline
Engine223 cc OHV 4-stroke
Starting systemRecoil
Warranty1 year
Power
VoltageAC: 120V 60 Hz, DC: 5V
Running watts3,500 W
Starting watts3,850 W
Running amps29.2 amps
Peak 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%
ComplianceEPA
SecurityLow oil and overload protection
Spark arrestorYes
Accessories includedTool kit
UPC027077805437

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.

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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, Buffalo 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 Buffalo Tools 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 sizing 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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