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Model#: GRCN6602

What are the different product conditions?

Brand new items;Full manufacturer warranty available
Manufacturer inspected, repaired and tested items; CPO 120 day money back guarantee
Open Box
New items with possible minor cosmetic damage; CPO 120 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

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  • Generac 6602 OneWash 2,000 - 3,100 PSI 2.8 GPM Residential Gas Pressure Washer
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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.
Built-in Detergent Tank: Yes
CARB Compliant: No
Case Included: No
Chemical Injection Method: Siphon Tube
Engine Displacement: 212cc
Engine Make: Generac
Engine Type: OHV engine
Frame Type: 2-Wheel Cart
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
Motor Type: Brushed
Nozzle Type: Quick-Change
Nozzles Included: Yes
Powered Tool Power Source: Gas
Pump Type: Axial Cam
Spray Gun Connection: Quick Connect
Starter Type: Recoil
Water Temperature: Cold
Wheel Size: 10 in
Wheel Type: Never-Go-Flat



4.1 / 5.0
16 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Yes, I would recommend this to a friend (12)
No, I would not recommend this to a friend (2)
Powerful (9)
Lightweight (2)
Easy To Use (1)
Value (1)
No, I would not recommend this to a friend
A great disappointment!
I received the box on Wednesday August 16, 2016 late evening. I assembled the pressure washer and was ready to go, but when attempting to start it the choke would not extend. What is worse even yet there was feedback stating the same thing. Why didn't the company recall this product? Furthermore, when watching the video on the CPO website at the end if you keep select he next video you see where Generac was offering a deal online for about $30 cheaper and they threw in a high pressure tip for free. CPO doesn't match price nor will they provide the HP tip.

I did call customer service at CPO and they did offer my money back or another machine. But who wants the hassle of trying to dis-assemble the machine and try to get it back in the box.

Meanwhile, I have an appointment tomorrow the 20th of August 2016 to take it to a authorized deal to get the coke looked at.

So I am very disappointed with CPO and Generac. This would make my second pressure washer made by Generac and I can not tell you how many different products I purchased from CPO.
August 19, 2016
Yes, I would recommend this to a friend
Assembly. Service. ?
Product is very good once operable. Choke would not operate. After starting, unit would not turn off. (wires were not connected). Part needed were shipped 2 to 3 weeks after ordering. Overall; quality control may be somewhat lax.
August 5, 2016
Yes, I would recommend this to a friend
Best bang for your buck
Very easy to start
July 17, 2016
Yes, I would recommend this to a friend
Great Pressure Washer, Easy Start and A Lot of Power
Easy to assemble out of the box and everything you need including engine oil and a oil funnel. Easy to use with the dials to dial in your pressure. The handle is collapsible for storing but very flimsy while in use. That is the reason I did not give this a 5 star rating and only gave it a 4 star. Nice machine!
May 25, 2016
Yes, I would recommend this to a friend
Got the spiral attachment and works awesome...
May 20, 2016
Yes, I would recommend this to a friend
Been using non-stop
Been using this non-stop since i have got it, and all my friends love it
May 3, 2016
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
Yes, I would recommend this to a friend
Very handy
I have ;use this for very thing from doing my driveway, deck, and gutters. It moved from one job to the next without problems.
April 18, 2016
Yes, I would recommend this to a friend
awsome washer
I've only used twice so far to clean pond and other pond accessories but I really like it so far. the adjustable pressure is a great feature. as far as durability seems good so far
April 17, 2016
Yes, I would recommend this to a friend
Strong cleaning equipment that will be used regularly. Expecting family and friends to ask if they can borrow.
April 16, 2016

Questions & Answers

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Browse 9 questions Browse 9 questions and 8 answers
Motor starts and stops after a couple of minutes.
Joe on Apr 24, 2016
BEST ANSWER: Please contact CPO Customer Care
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
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
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
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.

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 120 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 Out of Stock
Warranty: 2 Year 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.