Model # 6590

Internet #205143591

Generac 3,100 psi 2.8-GPM OHV Engine Triplex Pump Gas Powered Pressure Washer
0696471065909

Discontinued Generac

3,100 psi 2.8-GPM OHV Engine Triplex Pump Gas Powered Pressure Washer

  • Powerful Generac horizontal shaft OHV engine for long life
  • Brass quick change fittings for faster connections
  • Easy access professional grade tri-plex pump delivers longer life

Frequently Bought Together

Product Overview

Durable, easy to use and built to last, Generac's rugged commercial power washers feature professional grade triplex pumps and durable, welded, roll-cage style frames that protect both the engine and pump. Get cleaning power, reliability and above all ease of use in an affordable, compact power washer. This model is perfect for cleaning around the house, at work, or on the farm. Powerful Generac engine and triplex pump and are perfectly balanced over the axle for almost effortless maneuverability.

  • Powerful Generac OHV horizontal-shaft engine features low oil shutdown
  • Professional grade triplex pump with ceramic-coated pistons mean long life
  • Pressure control valve provides complete control of water pressure for all applications
  • Durable welded roll-cage style frame protects the engine and pump, front and back grab bars make it easier to lift
  • Folding handle for easy storage and transport
  • Professional grade spray gun with adjustable side handle provides precise control
  • Cushion grip and easy to pull trigger reduce fatigue and improve comfort
  • Steel reinforced hose will not leave scuff marks on surfaces
  • Quick change connectors make those connections a snap
  • Quick click nozzle tips five included for tackling any job
  • Choose the best nozzle that fits your pressure washer needs:

    Pressure Washer Nozzle Selection Guide




Info & Guides

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Price
$599.00 /each
$749.00 /each
$899.00 /each
$1,099.00 /each
Name 3,100 psi 2.8-GPM OHV Engine Triplex Pump Gas Powered Pressure Washer 3,800 psi 3.6 GPM OHV Engine Triplex Pump Gas Powered Pressure Washer 4,200 psi 4.0-GPM OHV Engine Triplex Pump Gas Powered Pressure Washer 3,800 psi 3.2-GPM Belt Drive Pro Power Gas Pressure Washer
Brand Generac Generac Generac Generac
Ratings (47) (20) (40) (3)
Maximum Pressure (PSI) 3100 3800 4200 3800
Pressure Washer Power Type Gas Gas Gas Gas
Commercial Yes Yes Yes Yes
GPM 2.8 3.6 4.0 3.2
Included Onboard storage,Wheels Onboard storage,Wheels Onboard storage,Wheels Onboard storage,Wheels
Features Chemical/detergent injection,Foldable handle,Quick connect tips Chemical/detergent injection,Foldable handle,Quick connect tips Chemical/detergent injection,Foldable handle,Quick connect tips Chemical/detergent injection,Quick connect tips
Refurbished No No No No
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Customer Questions & Answers

can you use detergent with this model washer? Generac 5993 3000 PSI

I am wondering if there is a pick-up tube for detergent or if it cannot be used with soap.May not need it but would like it as an option.
Asked by: Anonymous
Yes, it ha an adjustable volume soap pick up from an external source. It comes with a hose you attach to the pump and drop in a bucket od soap and has a variable adjustment knob to control how much soap is dispensed
Answered by: DIYGuy
Date published: 2015-09-17

Does the engine idle down when not spraying like the honda engines do ?

Asked by: Anonymous
NO!!!
Answered by: Thomas
Date published: 2015-09-17

Can I use a longer hose than the 35' hose that comes with the washer?

Asked by: sands
Generac does not offer an extension to the high pressure hose provided with the power washer. The hose that is provided with this unit is 3/8” diameter, but when lengthening the hose you may have a need for more pressure, so if you increase the hose size, you increase the amount of water flowing through, allowing a longer hose to be usable for this unit. We cannot guarantee that other manufacturer’s parts and accessories will be compatible with this unit, and we cannot guarantee the unit will operate properly with a longer high pressure hose. Also, please note that damage done to the unit from using an improperly sized high pressure hose will void the factory warranty.
Answered by: Generac
Date published: 2015-09-20

How do you empty the water out of the tank to keep it from freezing?

Asked by: Cajun
Per the unit's owner's manual, water should not remain in the unit for long periods of time, as sediments or minerals can deposit on pump parts and freeze pump action. To avoid freezing, be sure to follow the following steps (as detailed in the owner's manual). First, shut off the unit's engine, turn off the water supply, point the gun in a safe direction, squeeze the trigger to relieve trapped pressure, and let the engine cool. Please note that these steps should be performed every time you stop the engine. Also, be sure to engage the trigger lock when the washer is not in use. Next, disconnect the hoses from the spray gun and high pressure outlet on the pump. Drain water from the hoses, spray gun, and lance. Use a rag to wipe off the hose. Once you have completed these tasks, empty the pump of all pumped liquids. Check to ensure that the engine's ON/OFF switch and fuel valve are in the OFF position. Then pull the recoil handle about six times; this should remove most of the liquid in the pump. Lastly, to protect the unit from freezing temperatures, use a pump saver to treat the pump. This minimizes freeze damage and lubricates the pistons and seals. If a pump saver is not available, connect a 3-foot section of garden hose to the water inlet adapter. Pour RV Antifreeze into the hose, pull the recoil handle twice, disconnect the 3-foot hose, and store the unit in a clean, dry area. Please note, however, that if you do not plan on using the power washer for more than 30 days, you must prepare the engine and pump for long term storage as well. Details regarding these tasks can be located in your unit's owner's manual. If you do not have access to this documentation, please do not hesitate to contact us directly at 888-GENERAC (436-3722) for a duplicate copy.
Answered by: Generac
Date published: 2015-09-20

Why the DISCREPANCY??? Which is correct???

Product description says this is a 3100 PSI 2.8 GPM Pressure Washer, but the product specifications state that the included hose is only rated to 3000 PSI!!! Is the Home Depot description correct that it's a 3100 PSI 2.8 GPM pressure washer that only has a hose rated for 3000 PSI? Or are other questions mentioning the PSI rating correct that this is ONLY a 3000 PSI Pressure Washer that Home Depot is listing as a 3100 PSI unit???
Asked by: Mark
I looked at Generacs site and in the operators manual, and couldn't find the specifications. This is a high quality hose and after a year of use I've had no problems. This is the hose that ships from Generac. It isn't a problem, trust me.
Answered by: Mark
Date published: 2015-11-06

The local DIY store in Ottawa, KS has this same model #5993 on sale for $549, does Home Depot match or discount the price

Asked by: Anonymous
Hi John Thank you for asking. If you find a current lower price on an identical, in-stock item from any local retailer, we will match the price and beat it by 10% (Excludes special orders, bid pricing, volume discounts, open-box merchandise, labor and installation, sales tax, rebate and free offers, typographical errors and online purchases.) For any other questions, please call us at HomeDepot.com Customer Service 800-430-3376.
Answered by: Anonymous
Date published: 2015-11-07
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Customer Reviews

3,100 psi 2.8-GPM OHV Engine Triplex Pump Gas Powered Pressure Washer is rated 4.4 out of 5 by 47.
Rated 4 out of 5 by from Good Product... a few things to know though... This is an excellent product and know that I am familiar with some of it's character traits life using it is much more enjoyable. These tips will make your purchase much more enjoyable right from the start: 1. The wheel vibration can create a very loud & annoying sound easily remedied by putting a bungee cord between the wheels & frame. I've not removed mine since I placed it there, problem solved. 2. Once you turn it off and go to restart it DON'T BE SURPRISED when you pull the starting handle and it suddenly seizes and won't pull again. It's caused by water pressure in the spray line. This is clearly explained in the manual but, in case you use w/o reading 1st always know this approach for enjoyable use>>> ALWAYS MOVE THE THROTTLE FROM FAST TO SLOW BEFORE ENGAGING THE KILL SWITCH TO "OFF" AND ALWAYS FOLLOW THIS BY PULLING THE SPRAY TRIGGER TO RELEASE THE WATER PRESSURE & REPEAT PRESSURE RELEASE BEFORE STARTING AGAIN. 3. If you plan to use this for most of the day for cleaning house, driveway, etc... either keep a full gas can close by or buy the next model size larger to have the larger gas tank. Once you keep all this in mind it is a powerful and dependable machine! I actually use the pressure dial quite often to TURN DOWN the available pressure when washing vehicles & home siding. Last tip, buy a surface cleaner attachment- it makes cleaning flat surfaces fast work with beautiful results!
Date published: 2013-08-20
Rated 4 out of 5 by from exellent value After a very poor experience with a well known brand and doing extensive research on pressure washers I picked the Generac 3100 pro machine. It performs flawless in exess of its stated specs. The Generac customer service is excellent. A call is answered in minutes. When there were problems with my old machine Home Depot , where I had bought the PW , assisted me big time. After 4 attempts to repair the 1 year old PW they got me my purchase price from the Mfr back. For price and service go to Home Depot!
Date published: 2013-11-19
Rated 5 out of 5 by from Highly recommend this product on every level. Excellent features including pressure control valve and low oil shut down. Plenty of power. Solid and sturdy, but not so heavy that it can't be easily maneuvered. Very easy to use. Only negative is poor access to oil fill. Very inconvenient.
Date published: 2014-04-15
Rated 5 out of 5 by from Very nice unit After 16 years of use, my Craftsman pressure washer started to give me problems. I Checked out the pressure washers at Sears but made my decision on the Generic based off of the reviews. I typically use my pressure washer for homeowner chores and just finished power washing my driveway. I'm very happy with the unit, especially with it's power, ease of use and it seems to be well made. I did purchase a longer wand which helps out the back. This unit is more powerful than my last unit and should handle typical homeowner chores. I read a couple of issues with the starter being locked when the machine is shut down and then you try to re start it. Just press the wand trigger which will release the pump pressure.
Date published: 2014-09-10
Rated 5 out of 5 by from Exactly as expected! Look no further. I can't praise this enough. If you are a homeowner, this is all the pressure washer you will ever need. It's a MAJOR step up from what you see sitting on the shelves in the store. Spend the extra money and don't look back. I expect this thing will outlast me. Solid and well built. It fits that middle ground between the consumer model and the professional. I couldn't be happier.
Date published: 2014-04-27
Rated 5 out of 5 by from Great Deal and machine! I have used this for 6 hours without a problem. The gas tank lets it run for about an hour at a time which is a long enough time that you need a short break then too.
Date published: 2014-09-16
Rated 4 out of 5 by from Best Powerwasher Short of "Professional" Grade, Professional Price Assembly and first operation a snap, a well built easy to start and use power washer. I live on a lake with lots of wooden deck & docks. Previous unit could not handle the load and spent more time in repair than in use. The only negative, "soaper" feature is not described in the user manual, and if you are running only water, it sucks air and won't pressurize until you plug the connector. I learned this by trial and error. I highly recommend this unit and would encourage anyone considering a purchase to buy this unit versus the units in the three stores I shopped.
Date published: 2014-06-24
Rated 4 out of 5 by from Power washer1234 I'm very happy with it but you really have to watch what Parts get shipped with the power washer be cause we were missing a few parts for it
Date published: 2014-06-10
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