Model#: GRCN6602

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Brand new items;Full manufacturer warranty available
Manufacturer inspected, repaired and tested items; CPO 60 day money back guarantee
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New or Recon items with possible minor cosmetic damage; CPO 60 day money back guarantee
Returned items inspected, repaired and tested by CPO technicians; CPO 60 day money back guarantee

Generac 6602 OneWash 2,000 - 3,100 PSI 2.8 GPM Residential Gas Pressure Washer

New $419.99
Recon $359.99
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Product Overview


Perfect for those who deal with various tasks on a multitude of surfaces, Generac's OneWash 2000 - 3,100 PSI Pressure Washer is a must-have companion. With the Powerdial variable pressure control and consolidated panel, you not only have the capability of adjusting the spray pressure to adapt to any job, but also have all the pressure washer's control in one single location.
This pressure washer's versatility extends from at-home to on-the-job tasks.
Non-CARB Compliant Product - This product does not meet CARB regulations and is not available for sale or use in the state of California.
  • No need to scour for different buttons or switches as the consolidated panel keeps everything in one single location
  • PowerDial variable pressure control adjusts the spray intensity to tackle various cleaning tasks
  • Includes a 0 degree, 25 degree, and soap quick-click nozzle tips
  • Powerful 212cc Generac OHV engine delivers maximum cleaning performance and reliability
  • Axial cam pump with easy-access hose connections prevents kneeling down on the ground
  • Drainable detergent tank allows for easy cleaning of the tank after each use
  • Oversized never-flat tires provides improved mobility on rugged terrain
  • 30 ft. high pressure hose provides an extended range for improved usage and coverage
  • Designed and built in the USA for quality you can rely on
  • OneWash 2000 - 3,100 PSI 2.8 GPM Residential Gas Pressure Washer - 6602
  • Spray Gun
  • 30 ft. High Pressure Hose
  • (3) Quick-Click Nozzle Tops (0 degree, 25 degree, Soap)


Series: OneWash
Length: 20.6 in.
Width: 21 in.
Height: 39.5 in.
Weight: 68.5 lbs.
CARB Compliant: Yes
Chemical Injection Method: Siphon Tube
Engine Displacement: 212cc
Engine Make: Generac
Frame Type: 2-Wheel Cart
Fuel Tank Capacity: 3.2 qt.
Hose Connection: Quick Connect
Hose Diameter: 5/16 in.
Hose Length: 35 ft.
Hose Material: Polyurethane
Max. Water Flow Rate (GPM): 2.8
Max. Water Pressure (PSI): 3100
Pump Type: Triplex Plunger
Spray Gun Connection: Quick Connect
Spray Gun Nozzle: Quick Connect
Spray Gun Tips Included: 5
Starting System: Recoil
Water Temperature: Cold
Wheel Size: 10 in.



4.8 / 5.0
260 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Yes, I would recommend this to a friend (13)
No, I would not recommend this to a friend (1)
Powerful (8)
Lightweight (2)
Easy To Use (1)
Best Uses
Frequent Use (1)
Large Projects (1)
Small Projects (1)
Home Repair (1)
So far this product has worked great.
So far this pressure washer has worked great, it was easy to set up, it starts 1st or 2nd pull. I think that being able to adjust the psi is a great feature and was a great value (it really did not cost any more than a good three thousand psi machine). I would recommend this machine to anyone in the market for a home pressure washer in this price range.
June 11, 2013
Originally posted at
Overall good pressure washer
This is a great machine I like the adjustable dial the low oil and low water pressure shut down are also very important for the longevity of the washer quite for a pressure washer with plenty of power also like all the accessories available for it toy
March 11, 2013
Originally posted at
I love the dial in and especially the oil safeth feature
The safety oil indicator is great. The dial in pressure indicator is the best. Easy start -choke button is right next to pull. Shut off switch is great.
June 15, 2013
Originally posted at
Yes, I would recommend this to a friend
Good purchase fits my needs well.
Could have arrived more ready to use, had to attach wires for on -off button and adjust idle cable.
April 26, 2016
Great machine, but had issues out of the box.
This machine is great but when I went step by step on assembly out of the box I had 2 issues. 1st issue was when filling the gas tank fuel spilled out due to a carburetor fuel line not connected to the Carburetor. 2nd issue was that the "off" switch was not connected so that the washer would not shut down without help. Once these issues were resolved this machine has been great.
April 24, 2017
Originally posted at
Great product for the price and performance
Just got our power washer and love it. The variable pressures are wonderful for multiple jobs. The Onewash provides everything you will need and expect from a power washer. I purchased it primarily for washing the RV and does not only a great job but saves me having to hire someone to clean it. It does the job that normally costs me $10.00 per foot each time I get it washed. With a 38 foot RV that gets to be a lot of money in the course of a year.
August 2, 2015
Originally posted at
Everything I need in one package
I can do all my power washing needs with ONE machine. Easy to use. Very effective, powerful cleaning for all the things that are hard to restore. Now, I have a well designed and built machine that can handle everything I need to clean. Best of all is: Made in USA!
August 4, 2015
Originally posted at
Designed with the operator in mind.
This product is very user friendly. From the variable wash pressure to the nozzle holders on the dashboard. The ergonomic handle on the well balanced spray wand is comfortable to operate hour after hour. Comprehensive instruction manual with winterizing steps, truly water tight hose connectors and fittings, extra large wheels, and a powerful yet quiet engine round out an excellent power product. Hat tip to you and your entire team. I'm sold on Generac power products.
August 6, 2015
Originally posted at
One Wash Is a Great Buy
Wow! Great Power washer. I have only has this One Wash Power washer for a couple months but I have used in on Cars, Lawn Mowers, and Driveways. Easy to setup and Prepare for use. Very easy to start. This is a well built Machine and I'm very satisfied with how well it works so far. I Love the different pressure settings. I Highly Recommend this machine for any residential use.
August 10, 2015
Originally posted at
Very simple machine to use.
I have had great luck with this washer so far. The assembly was very easy, there was oil included, filled with gas and it started on the 2nd pull. The only improvement would be a better way to keep the hose coiled up.
April 20, 2017
Originally posted at

Questions & Answers

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Browse 10 questions Browse 10 questions and 8 answers
How do you completely empty the motor oil compartment to add clean motor oil?

Thank you.
Stella on Dec 16, 2014
BEST ANSWER: Please contact Generac's technical support for assistance. 1-888-436-3722
how do you change the battery?
thomas m on Jun 19, 2017
BEST ANSWER: There is no battery.
what type of pump comes with this unit. two types are listed
Bob the Builder on Sep 23, 2015
BEST ANSWER: The Generac 6602 has an axial cam pump
Motor starts and stops after a couple of minutes.
Joe on Apr 24, 2016
BEST ANSWER: Please contact CPO Customer Care
Is this a durable unit? Or will it break down just after the warranty expires?
jim on Apr 10, 2015
BEST ANSWER: Generac makes a good product in terms of durability. It is made to be used everyday
why does the reviews say the one wash has water oil warning light shut off
ted waiting on delevery on Nov 25, 2014
BEST ANSWER: We can only assume that the reveiwer intended to review a different model. Generac's model 6602 does not offer a low oil shut off feature.
Who manufactures the engine?
Red on Apr 12, 2014
BEST ANSWER: It is a Generac 212cc OHV Engine. Manufactured by Generac.
when I push the off button the unit does not shut down?
jeff s on Apr 8, 2017

New Vs. Reconditioned

What's the difference between New and Factory-Reconditioned?

Factory-Reconditioned products have been returned to the manufacturer and are restored to like-new operating condition; they go through a rigorous testing and inspection process. Plus, they offer a significant savings vs. new.
  • Reconditioned products may have minor cosmetic blemishes or scratches that do not affect item performance.
  • Reconditioned products may not come with all of the consumables the new version comes with (bits, sanding pads/papers, cases, etc.).
  • Both come with a manufacturer warranty and are covered by our Money Back Guarantee; New is 30 days, Reconditioned is 60 days.
Condition: New Factory Reconditioned
Features: Same Same
Specs: Same Same
Includes: OneWash 2000 - 3,100 PSI 2.8 GPM Residential Gas Pressure Washer - 6602,
Spray Gun,
30 ft. High Pressure Hose,
(3) Quick-Click Nozzle Tops (0 degree, 25 degree, Soap)
OneWash 2,000 - 3,100 PSI 2.8 GPM Residential Gas Pressure Washer - 6602R
Availability: Out of Stock In Stock
Warranty: 2 Year Limited null



For a period of two years from the date of original sale, Generac Power Systems, Inc. (Generac) warrants its Pressure Washers will be free from defects in materials and workmanship for the items and period set forth below. Generac will, at its option, repair or replace any part which, upon examination, inspection and testing by Generac or a Generac Authorized Warranty Service Dealer, is found to be defective. Repair or replacement pursuant to this limited warranty shall not renew or extend the original warranty period. Any repaired product shall be warranted for the remaining original warranty period only. Any equipment that the purchaser/owner claims to be defective must be returned to and examined by the nearest Generac Authorized Warranty Service Dealer. All transportation costs under the warranty, including return to the factory, are to be borne and prepaid by the purchaser/owner. This warranty applies only to Generac Pressure Washers and is not transferable from original purchaser. Save your proof-of-purchase receipt. If you do not provide proof of the initial purchase date, the manufacturer’s shipping date of the product will be used to determine the warranty period.

***This Warranty only applies to units sold for use in the US and Canada.***


Consumer applications are warranted for two (2) years.


YEAR ONE – Limited comprehensive coverage on Labor and Part(s) (proof of purchase and maintenance is required):

  • • All Components

YEAR TWO - Limited comprehensive coverage on Part(s) (proof of purchase and maintenance is required):

  • • Engine only – Major components including: Block, head, crank, cam, rods and pistons.

NOTE: For the purpose of this warranty “consumer use” means personal residential household or recreational use by original purchaser. Any use of the Pressure Washer in a commercial or rental application will void the warranty.


  • • The customer is responsible to read and follow all operating instructions.
  • • Products that are damaged due to improper operation, will not be covered by warranty. This includes water pump components that are started without the required water flow and pressure.
  • • The customer will be responsible to transport the product to an authorized Generac repair facility for all Warranty All Components.
  • • Verification of maintenance may be requested for coverage of Warranty Repairs.
  • • Warranty Labor Rates are based on normal working hours. Additional costs for overtime, holiday or emergency labor costs for repairs outside normal business hours will be the responsibility of the customer.
  • • Warranty Parts shipment costs are reimbursed at ground shipment rates. Costs related to requests for expedited shipping will be the responsibility of the customer.


  • • Generac pressure washers that utilize non-Generac replacement parts.
  • • Costs of normal maintenance and adjustments.
  • • Failures caused by any contaminated or improper fuels, oils or lack of proper oil levels.
  • • Repairs or diagnostics performed by individuals other than Guardian/Generac authorized dealers not authorized in writing by Generac Power Systems.
  • • Failures due, but not limited, to normal wear and tear, accident, misuse, abuse, negligence or improper use. As with all mechanical devices, the Generac engines need periodic part(s) service and replacement to perform as designed. This warranty will not cover repair when normal use has exhausted the life of a part(s) or engine.
  • • Failures caused by any act of God and other force majeure events beyond the manufactures control.
  • • Water freezing in the pump (water must be drained from the pump at the end of the season in freezing climates).
  • • Damage related to rodent and/or insect infestation.
  • • Products that are modified or altered in a manner not authorized by Generac in writing.
  • • Any incidental, consequential or indirect damages caused by defects in materials or workmanship, or any delay in repair or replacement of the defective part(s).
  • • Failure due to misapplication.
  • • Expenses related to “customer instruction” or troubleshooting where no manufacturing defect is found.
  • • Rental equipment used while warranty repairs are being performed.
  • • Starting batteries, fuses, filters, light bulbs and engine fluids.

THIS WARRANTY IS IN PLACE OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, SPECIFICALLY, GENERAC POWER SYSTEMS MAKES NO OTHER WARRANTIES AS TO THE MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Any implied warranties which are allowed by law, shall be limited in duration to the terms of the express warranty provided herein. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to purchaser/owner.

GENERAC POWER SYSTEMS ONLY LIABILITY SHALL BE THE REPAIR OR REPLACEMENT OF PART(S) AS STATED ABOVE. IN NO EVENT SHALL GENERAC POWER SYSTEMS BE LIABLE FOR ANY INCIDENTAL, OR CONSEQUENTIAL DAMAGES, EVEN IF SUCH DAMAGES ARE A DIRECT RESULT OF GENERAC POWER SYSTEMS, INC. NEGLIGENCE. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitations may not apply to purchaser/owner. Purchaser/owner agrees to make no claims against Generac Power Systems, Inc. based on negligence. This warranty gives purchaser/owner specific legal rights. Purchaser/owner also may have other rights that vary from state to state.