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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. (Read full specs)

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Sportsman GEN4000iOF
Price History
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Price history for the Sportsman GEN4000iOF
Highest Price
$902.38
Lowest Price
$902.38
Current Price
$902.38

Description

Zoom on the Sportsman GEN4000iOF

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

  • RV travellers wishing to enhance their freedom and nomad lifestyle
  • Occasional participants of outdoor events, competitions, concerts and festivals
  • Amateur DIY lovers
  • Homeowners in need of an emergency backup power for their essentials
  • Camping and tailgating buffs looking to enhance their experience

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

The Sportsman GEN4000iOF in use

The Sportsman GEN4000iOF

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 3,500W and also a peak wattage of 3,850W. In addition, as it is parallel capable (parallel kit not included), this power can be increased when linked to another similar or compatible unit.

The inverter generator features a simple traditional pull-start mechanism. It is rated for a noise of 65 dBA (just slightly more noisy than an office).

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).

Thanks to its low <5% Total Harmonic Distortion (THD), the GEN4000iOF produces a clean sine wave output, making it safe for your sensitive electronics when utilizing the AC outlets.

Outlets

The control panel features 3 AC outlets as follows:

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

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

The inclusion of a TT-30R receptacle (TT for 'Travel Trailer') makes this Sportsman generator RV Ready, ideal for providing power to recreational vehicles.

Portability

With dimensions of L23 x W17.5 x H20.3 in, the traditional open frame design of the Sportsman GEN4000iOF ensures stability while allowing easy maintenance access to components and promoting effective air cooling. This type of design is ideal for tough environments and heavy outdoor use.

Weighing 93 lbs, the GEN4000iOF is practical, ensuring it can follow you wherever power is required. Furthermore, the generator's open frame construction allows for easy grabbing and movement.

Features

Panel of the Sportsman GEN4000iOF

The GEN4000iOF's control panel

Light indicators on the device will signal if the generator is ready, its oil levels are insufficient and the generator is on overload.

A built-in fuel gauge allows for a quick, easy and convenient check of the fuel level of the inverter generator.

From a security standpoint, the product offers an overload protection (circuit breaker) and an automatic low oil shut-off, allowing you to use it with a peace of mind.

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.

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).

  • Weighing in at 93 lbs, the Sportsman GEN4000iOF fits within the expected weight range for inverters producing 3000 to 4000 rated watts. If weight is a key factor for your needs, the Pulsar PGD40iSCO is noteworthy for being one of the top contenders in this power range, with a dry weight of 46 pounds.
  • 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 you wish to prioritize minimal noise, the Westinghouse iGen5000DF stands out as one of the quietest options among generators of similar power, with a rating of 52 dBA.
  • At a 50% load, the GEN4000iOF's around 10 hours of runtime on a full tank fall within the average autonomy range for similarly powerful inverter generators. If you consider autonomy on a single full tank as one of the deciding factors, one of the generators in the same power range that offers the highest run time is the Westinghouse iGen5000DF, with around 15 hours.
  • While run time is vital, it hinges on the fuel capacity. To grasp the full picture, we must also factor in fuel efficiency. 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 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 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
AVERAGE SPECS:
  • Decent weight (93 lbs)
  • Decent run time
WEAKNESSES:
  • No data center
  • No electric start
  • 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

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.

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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 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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