Predator 6500 - 5500/6500W Portable Generator

The Predator 6500 (59133) is a portable open frame generator with a rated wattage of 5,500 W and a starting wattage of 6,500 W.

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Predator 6500Predator 6500
Even though the pictures on this product page show wheels, Predator generators sold at Harbor Freight do not come with a wheel kit. It must be purchased separately.
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Price History
Price history for the Predator 6500
Latest updates:
  • $649.99 - November 18, 2023
  • $679.99 - April 15, 2023
  • $639.99 - March 14, 2023
  • $679.99 - February 6, 2023
  • $639.99 - January 27, 2023
Data source: harborfreight.com
Since: January 27, 2023
  • Highest Price: $679.99 - February 6, 2023
  • Lowest Price: $639.99 - January 27, 2023


The PREDATOR® 6500 Max Starting Watt, 5500 Running Watt Gas Powered Portable Generator is built with reliability and safety in mind. Powered by a dependable 301cc PREDATOR® gas engine, this generator is ideal for emergencies, job-sites, and home backup.

Zoom on the Predator 6500

In a nutshell, the Predator 6500 is a portable generator mostly geared towards:

  • RV travellers looking for even more independence
  • Occasional participants of outdoor events, competitions, concerts and festivals
  • Food truck owners who want to ensure that their business is fully self-contained and does not rely on potentially unreliable external power
  • Homeowners who want to be able to use the most necessary devices in their household, even during a blackout
  • Professionals who want to be able to deliver results, even during a power failure

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 Predator 6500 in use

The Predator 6500

The Predator 6500's design includes a gasoline-fueled 301 cc (8 hp) OHV 4-stroke engine. With a 120/240V output, it gives a running wattage of 5,500W and also a peak wattage of 6,500W.

With a noise rating of 73.5 dBA (just slightly more noisy than a shower), the generator features a conventional pull-start mechanism.

The 6500 can operate for around 14.5 hours at 50% load with a full tank (fuel consumption around 0.55 GPH), due to its fuel capacity of 8 gallons.


The control panel includes the following 5 AC outlets:

Two Duplexes 120V 20A (5-20R) GFCI
120/240V 30A (L14-30R) receptacle

Additionally, it features 1 DC outlet: there's a 12V 10A (cigarette lighter style) receptacle allowing you to easily charge your batteries.

As the 6500 holds a twist-lock L14-30R receptacle, it is transfer switch ready: you'll easily be able to connect it to your breaker box to power your home during a power outage.


The dimensions of the Predator 6500, which are L26.9 x W22 x H22.8 in, and its typical, open frame design provides stability and enables the generator to be raised above ground level. This type of design is ideal for tough environments and heavy outdoor use.

Since the generator weighs 165 lbs, it will be incredibly difficult to manually lift it and transport it, even though it is technically considered to 'be portable' (in the sense that it is movable). Still, once it is on the ground, a wheel kit (separate purchase from Harbor Freight or Amazon) can easily solve the issue of low mobility and allow for easy relocation of the device.


Panel of the Predator 6500

The 6500's control panel

The device’s light indicator will display if its oil levels are insufficient.

Thanks to a built-in fuel gauge, the generator allows you to quickly, conveniently and easily check the gas level at a glance.

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).

The unit also benefits from the Predator's CO SECURE™ carbon monoxide detection. This system monitors the accumulation of CO gas while the generator is running and will shut off the engine if the levels become dangerously high.

Besides the usual set of documentation and owner's manual (opens in a new tab) to get you promptly started, Predator also included a tool kit in the 6500's packaging. A storage cover is also available, as a separate purchase.


The Predator 6500 is EPA-approved and CARB-compliant. It can therefore be sold and purchased in all 50 states, including California.

Moreover, it features a spark arrestor, which makes it suitable for use in forested areas.

The unit also meets the ANSI/PGMA G300-2018 safety and performance requirements.

Product Video

The Predator 6500 versus other generators

The following charts are provided to give you an idea of how some of the key specs of the Predator 6500 compare to generators of similar power (between 5000 and 6000 W).

  • Having a dry weight of 165 lbs, the Predator 6500 belongs in the expected weight range for generators which produce 5000 to 6000 rated watts. If weight is your top priority, one of the champions in this power category is the Genmax GM6000XiE, weighing just 106.9 pounds.
  • As this generator can emit noise as low as 73.5 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 Honda EU7000iS, one of the least noisy generators similarly powerful as this one, rated for 52 dBA.
  • Thanks to an impressive running time of around 14.5 hours at 50% load, the 6500 benefits from one of the highest run times among generators of a similar output.
  • Autonomy holds its importance, however, it is largely dependent on the generator’s fuel capacity and so, it is nonsensible to discuss it without mentioning fuel efficiency as well. This generator reaches an estimated fuel consumption of 0.55 GPH (gallon per hour) at a 50% load, making it average, for the previously mentioned wattage range. If you are concerned with gasoline efficiency, having a fuel consumption of just 0.36 GPH, the A-iPower SUA7000L is a device you could look out for.

Price comparison

As you can see from this interactive chart, when compared to other 5000-6000W generators, the Predator 6500 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

  • In the expected price range
  • CO SECURE™ technology
  • GFCI Outlets
  • High run time
  • Decent weight (165 lbs)
  • Acceptable noise (73.5 dBA)
  • Decent fuel efficiency
  • No data center
  • No electric start
  • Wheel kit not included
  • Weak warranty

Do you own the Predator 6500 and agree (or disagree) with these strengths and weaknesses?

Let us know and write your own review.

Features and Specifications

Parallel capableNo
RV readyNo
Engine301 cc OHV 4-stroke
Starting systemRecoil
Warranty90 days
VoltageAC: 120/240V 60 Hz, DC: 12V
Running watts5,500 W
Starting watts6,500 W
Running amps (@120/240V)45.8/22.9 amps
Peak amps (@120/240V)54.2/27.1 amps
Run time @50% load14.5 h
Run time @25% loadUnknown
GFCI outletsYes
Covered outletsYes
Automatic Voltage RegulationYes
AC outlets
  • 2x Duplex 120V 20A (5-20R) GFCI
  • 1x 120/240V 30A (L14-30R)
DC outlets1x 12V 10A (cigarette lighter style)
Data centerNo
IndicatorsLow oil
Fuel tank8 gal
Fuel gaugeYes
Weight165 lbs
Approx. dimensions (L x W x H)26.9 x 22 x 22.8 in
Noise (lower limit)73.5 dBA
ComplianceCARB, EPA, ANSI/PGMA G300-2018
SecurityLow oil and overload protection, CO monitoring
Spark arrestorYes
NeutralBonded to frame
Accessories includedTool kit
Other model numbers63964, 59133

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.

Spec Improvement×

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About Predator

Predator portable generators are solely distributed by the Harbor Freight Corporation, which has an impressive list of over 200 trademarked products. The Predator brand is one of their newer lines of outdoor power products. As with many other makes and models of power equipment sold by Harbor Freight, Predator generators are manufactured in China.

Warranty Information

The Predator 6500 is covered under a warranty for up to 90 days. This warranty may be limited and may not cover all parts of the generator.
For more information about the warranty of Predator generators, please consult Harbor Freight's warranty policies stated in the user manual (opens in a new tab). Alternatively, you can also contact their Customer Support : 1-800-444-3353.

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 homeSump pump (1/2 hp)10502150
Furnace fan (1/2 hp)8752350
Refrigerator (energy star)1921192
Electric range21002100
Security system180180
Total4397 W5872 W
For campingRadiant heater13001300
RV refrigerator180600
Hair dryer18001900
RV AC (11,000 BTU)10101600
Total4390 W4980 W
For workTable saw18004500
Electric fence (25 miles)250250
Drain cleaner250250
Bug zapper8080
Total3780 W6480 W
How can I attach a 12V battery to this generator? (Asked September 05, 2020)

Since this unit does not have an electric start, there are no reasons to attach a 12V battery to it.

Does the 6500 need to be grounded? (Asked October 28, 2020)

It is always safer to ground your generator.

how to get a wiring diagram (Asked April 15, 2021)

Wiring diagrams may be obtained by contacting Harbor Freight: 1-800-444-3353.

Can you make the predator 6500 w generator with an electric start having electric start (Asked April 16, 2021)

The 301cc engine of the Predator 6500 is not electric start capable.

Can you run a desk top computer with this generator (Asked April 22, 2021)

The unit is not suitable to power sensitive electronic equipment.

What kind of spark plug does it take (Asked April 23, 2021)

Spark plug is NHSP® / Torch® F6TC

What is the max AMP capacity of this unit? (Asked June 17, 2021)

120V: 54.2 starting amps. 240V: 27.1 starting amps.

Why does it have a 25 amp plug in instead of a 30 amp plug in for a 30 amp for a travel trailer? (Asked June 12, 2022)

The unit provides 5500 running watts. For convenience, it does have a 30-amp L14-30R twist lock outlet. However, this outlet is behind a 23-amp breaker to prevent overloading, since the 5500 watts are reached at 23A (23A*240V=5520W).

I have a well water system that runs on 220v. Will this generator supply 220v to run the system.? (Asked July 16, 2022)

The unit produces 240V through its L14-30R outlet.

were can I get valves for a 301cc predator (Asked September 30, 2023)

Replacement parts can be obtained through Harbor Freight: 1-800-444-3353.

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Predator 6500
7.5 Total Score
8 reviews
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User Reviews

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  1. 4.9

    I’ve owned this generator 6500 watt since mid 2000’s. Mine has to be 15 years old. I ran the crap out of it for 4-5 days without changing oil or stopping the machine. I do change the oil often. One problem I had was it leaked gas out of the carb after my house AC unit kicked on and off while the microwave started etc. That was only one instance. I would like to see a parts list for these. Thats my only drawback to predator motors, you can’t even find carb gaskets. When I bought it I was told by harbor freight that all honda parts fit on this engine. Good luck finding a mechanic that will do the research to cross fit parts. Overall I give this gen a 5 star as its served me well. When it dies out if the parts list are available I might buy another predator or if not I might buy somehting with a standard briggs and stratton. Another note, when contractors buy them you know they must be reliable.

    + PROS:
    • Cheap, reliable, work horse
    - CONS:
    • little part availablitlity, service, manufacturer contact, customer service.
    Helpful(1) Unhelpful(1)You have already voted this
  2. 1.4

    Yes I’ve had a problem with the gas leaking by the air filter from the carburetor does not stop flow of gas from coming out. This generator is brand new unboxed today and this is the second one that has not worked for me the first one was 1 day pass warranty then blew up smh I honestly have to give this predator product a zero as it’s very unpredictable and unreliable

    + PROS:
    • It just looks nice
    - CONS:
    • Unpredictable
    • Unreliable
    • Weak warranty
    • Expensive
    Helpful(1) Unhelpful(1)You have already voted this
  3. 3.75

    Good except the on/off button.

    + PROS:
    • Good performance once started
    - CONS:
    • The push on/off button sucks!!!!
    Helpful(2) Unhelpful(0)You have already voted this
  4. 4.5

    I have this generator and it’s overall pretty good plenty of power to run my 3 bedroom home completely.it is a lil in the heavy ockward side,to be expected with a unit if this size,it starts on first pull Everytime with the original carburetor,except the fuel consumption is crazy to me in not only this one but in all gens if even smaller size,so I bought a propane /gas carb off internet thinking it would do better on my pocket .here’s were it gets stupid to me in all gens if u use propane your gen won’t produce the same amount of wattage ..😒and that’s across the board on any unit.oh yes it didn’t save me a dime either.lol,but if you’re aware of all of this then I suggest this unit because I have had several brands as well as a smaller predater,and it’s been the best one ever I promise .as long as I keep the oil changed and fresh about once every two or three weeks depending on use and always use a quality oil supliment that starts with an L it really does help no matter what oil you burn .

    + PROS:
    • Enough reliable power
    - CONS:
    • Loves fuel more than me😒
    Helpful(1) Unhelpful(0)You have already voted this
  5. 0.5

    I have one only 7 months old and it has stop producing power!!!!! Not reliable at all 0 stars

    + PROS:
    • None
    - CONS:
    • Won’t last long
    Helpful(1) Unhelpful(0)You have already voted this
  6. 4.75

    I give it a 4.5. Only reason it doesn’t get a five is the starting issue.

    + PROS:
    • I like it. Runs well. Minimum vibration.
    - CONS:
    • I can’t start it. Too hard to pull. I have to get someone else to start it. Once running it is great. Anyone have any know a way to convert it to an electric start or something?
    Helpful(1) Unhelpful(0)You have already voted this
  7. Avatar
    aaron mark smith December 8, 2020 at 3:51 pm

    We bought this Predator 6500 used so we do not know how many hours it was used. But it has been reliable and we have used it for equivalent of 2 weeks full run time on and off. Change the oil for every 80 hours of run time.
    Add fuel stabilizer to each fill up. Always turn gas off and run residual fuel in carb till engine dies to store it away. Run engine at least once every month or two for 15 minutes even when stored. Very reliable, it starts every time on 2nd pull start. Its a little noisey, good idea to build a enclosure insulsted with fresh air intake and exhaust. And it runs a small house with lights on, 2

    + PROS:
    • Starts every time if you take care of it.
    • Reliable, again if you keep fresh fuel and oil in it and change spark plug for every 100 hours.
    • Runs a small house with fridge's, washing machine and dishwasher, and microwave.
    • Good fuel efficient. 14.5 hour run time on full tank 8 gallons.
    - CONS:
    • A little noisey, needs insulated sound enclosure.
    • A little heavy to move around.
    Helpful(9) Unhelpful(0)You have already voted this
  8. 5

    This is the best generator I have ever owned. No need for electric start, it cranks first pull every time. It ran everything in my house during a three day power outage including the water heater and well pump (not at the same time though, I shut off the pump when the water heater was on)

    + PROS:
    • It cranks with the first pull of the starter rope and it runs a long time on a tank of gasoline.
    - CONS:
    • The only thing I can think of is that it doesn't have an hour meter so you can keep track of when to change the oil.
    Helpful(9) Unhelpful(0)You have already voted this

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