Model # 5940

Internet #202538952

Generac 6,500-Watt Gasoline Powered Portable Generator


6,500-Watt Gasoline Powered Portable Generator

  • Generac OHV engine delivers a long life of reliable power
  • Low oil shutdown safeguards engine from damage
  • Steel fuel tank and hardened steel cradle provides durability
$79900 /each
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Frequently Bought Together

Product Overview

This Generac GP6500 8,000-Watt Gasoline Powered Portable Generator is ideal for use as a backup power source during home emergencies, camping excursions, jobsite tasks and outdoor events. This generator offers four 5-20R 120-Volt outlets and 1 L14-30R Twist-Lock 120/240-Volt outlet with covers for protection from tampering and debris.

  • 8,000-Watt peak and 6,500-Watt running power provides reliable power for home emergency use, camping, jobsites and outdoor events
  • 7.2 Gal. fuel tank runs the generator continuously for up to 10 hours on 50% load
  • 389cc engine runs on gasoline
  • Four 5-20R 120-Volt outlets and 1 L14-30R twist-lock 120/240-Volt outlet
  • Outlet covers offer protection from the elements
  • Circuit breakers help provide overload protection
  • Muffler helps ensure quiet operation
  • Hour meter tracks maintenance requirements
  • Automatic shut-off when oil levels are low to help prevent engine damage
  • Wheels and handles help provide easy portability
  • Includes engine oil and quick-start guide
  • Click on the more info tab to download the specifications pdf to view the wattage requirement guide
  • Does not come with power cord

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents.  Download a free copy from the Adobe Web site.



Product Depth (in.)
Product Height (in.)
Product Length (in.)
Product Width (in.)


Built-in inverter
CA (CARB) Compliant
Not CARB Compliant
Continuous Wattage
Engine Displacement (cc)
Engine Make
OEM Branded
Fuel Tank Capacity (gallons)
Fuel type
Full load fuel consumption (gallons/hour)
Generator Features
Automatic Voltage Regulation,Fuel Gauge,GFCI Outlet(s),Low Oil Shutdown,Wheel Kit
Horsepower (hp)
0 hp
Number of circuits/outlets
Operational volume (dB)
Osha Required GFCI Outlets
Peak Wattage
Product Weight (lb.)
Run time at 50% load (hours/tank)
Voltage (volts)

Warranty / Certifications

Certifications and Listings
EPA Approved
Manufacturer Warranty

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Customer Questions & Answers

Is this electric start?

Asked by: Anonymous
No, the GP6500 is not electric start, it is a recoil pull start but pulls moderately easy.
Answered by: seagrappler
Date published: 2017-05-10

What motor oil weight is used

Asked by: tony
Per the unit’s owner’s manual, Generac’s GP6500 portable generator, model number 5940, will come with a liter of SAE 30 oil. After the unit's first five hours of operation, you can switch to a 10W-30 or 5W-30 synthetic oil. When changing the unit’s oil, ensure that the unit’s oil is properly drained; do not mix two oils of differing viscosity levels. If you have any other product-related inquiries, please contact us directly at 888-GENERAC (436-3722).
Answered by: Generac
Date published: 2017-07-01

Does this unit have a bonded or floating neutral?

Wanting to connect this to Generlink system, requires unit to have floating neutral
Asked by: Ryan
Per the product's spec sheet, Generac's GP6500 portable generator, model number 5940, features a bonded neutral.
Answered by: Generac
Date published: 2016-03-01

How much does this unit weigh?

We have a house and a pop up camper. I would like to have this as a standby for the house during inclimate weather and when we camp off the grid. We would have to lift it up into the pickup truck bed and would like to know the weight.
Asked by: Homeowner
This generator weighs 184 pounds
Answered by: CommunityAnswer
Date published: 2017-03-07
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Customer Reviews

6,500-Watt Gasoline Powered Portable Generator is rated 4.7 out of 5 by 327.
Rated 5 out of 5 by from right out the carton , we purchased this unit ,removed from the carton @the job site filled with oil that was provide from Generac and fill with gasoline ,hooked up to a outside project job trailer and ran the unit for 40.o hrs even in the cold weather it never missed a beat ,I am glad to have made such a smart purchase of a high quality generator ,originally we were thinking about renting because we didn't want the headache of having to have the rental company have to fix the unit or do repairs when we really depended on electrical power .thank you, Jesse f Rose president of environmental services plus ,Kaukauna wi
Date published: 2017-02-21
Rated 5 out of 5 by from Very nice unit Bought this generator for use as a power backup when power is lost for myself , other family members or friends . Received unit in a VERY timely matter , after installing wheel kit ( a must have ) , adding oil and gas the generator started right up , runs quite and smooth . Love the electric start and the twist Lock power cord that came with this unit , as of yet have not had to use it but pretty sure it will perform as needed , I would recommend this Generac GP6500E generator to anyone and it's a good value .
Date published: 2017-03-29
Rated 5 out of 5 by from Great product for the price This generator works great and I got it for a great price on sale. I havn't used it much, but it starts right away and seems to have a lot of power. The only complaint I have is that getting the cotter pins in for the wheels is a bit hard how they have them positioned. Other than that the generator seems to be great so far.
Date published: 2017-01-22
Rated 5 out of 5 by from Purchased generator as a backup for electric outages from severe storms. I have not used it, and ... Purchased generator as a backup for electric outages from severe storms. I have not used it, and hope I never need to. I did add gas and the included oil to start it. It started on 2nd pull and ran smoothly. Generator looks well made and was delivered in secured packaging.
Date published: 2017-05-16
Rated 5 out of 5 by from Great Generator This is the first Generator I have bought and so far I am happy with the purchase! It was very easy to put together. It only took about 15 minutes from unpackaging to startup. It is a little loud, but not over bearing. I shut the power off to the house and started it up on the first pull! It ran great and most importantly it ran the jet pump, furnace, refridgerator, living room lights and TV, kitchen lights and bedroom lights and TV! Everything I needed to run! I used 2 15W energy saving bulbs in each room. One thing they should include is a funnel for the oil. Over all it is a great product!
Date published: 2013-01-08
Rated 4 out of 5 by from Easy start Needed because of ice storm power would be off for at least a week. Filled with oil and gas it started on first pull. It run all night with one tank of gas. Had quick connect at power pole easy work for next when you live in country, South Dakota
Date published: 2017-02-07
Rated 5 out of 5 by from Great generator for the money. I purchased this generator as a backup to keep the heat on, well pump running, and refrigerator running. It was easy to assemble, and runs fairly quietly. I recommend it.
Date published: 2017-01-27
Rated 5 out of 5 by from Excellent product I like the color and paint job. It starts easily and holds a good quantity of fuel. Construction is German caliber excellent. Portability is good despite the weight.
Date published: 2017-01-29
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