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Most Recent Questions
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Is this product American made?
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Link to manual, parts and other docs.
Recent Question:
Why is there a pressure switch on AR pump?
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Is this a new model or an old model?
Recent Question:
Nozzle recommendations for various jobs?
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Is this product American made?
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Why is there a pressure switch on AR pump?
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Can a pressure gauge be added to Generac 6590 pressure washer?
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Is this a new model or an old model?
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Nozzle recommendations for various jobs?
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Customer questions and answers for
Generac Power Systems OneWash Residential 6602

Customer questions and answers:
59 Questions
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59 Answers
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Customer questions and answers for Generac Power Systems OneWash Residential 6602

Question

Why is there a pressure switch on AR pump?

I've noticed all the ONE WASH models 6412, 6413, 6602 etc. have a pressure switch on the pump. Can you tell me how it functions and why? I don't see this on other pressure washers.
Thanks
State: PA - Pennsylvania
Age: 55-64
asked 3 days ago
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Cleats
Franklin
on OneWash Residential 6602
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answer 1
In contrast to other residential power washers, the PowerDial Variable Pressure Control on Generac’s OneWash residential power washers provides total control at the turn of a dial. This easily adjusts the intensity of the spray to clean a wide range of surfaces with a single, easy-to-use control. However, if you are referring to the Unloader Valve on the power washer’s featured pump, this part of the unit controls the unit’s high pressure output, however, please note that this part is in fact featured on certain other models of our residential power washers as well. If you have any further product-related inquiries, please do not hesitate to contact us directly at 888-GENERAC (436-3722).
answered 3 days ago
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GeneracPowerSystems02
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Question

Why did they remove the low oil/water warning light and auto shut off on the new 6602 model

State: OH - Ohio
Age: 55-64
asked 5 days ago
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Johnny
on OneWash Residential 6602
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answer 1
Generac’s OneWash residential power washer features an Automatic Cool Down (Thermal Relief) system and recommended maintenance schedule, both of which are described in detail in the product’s owner’s manual. Per the unit’s documentation, the oil should be changed every 20 hours or every season, following these instructions should alleviate any issues pertaining to low oil issues. Furthermore, the Automatic Cool Down System which will relieve the unit’s temperature, if the engine on the power washer is ran for 3-5 minutes without pressing the trigger on the spray gun, which can potentially cause the water in the unit’s pump to rise above 125 degrees farhenheit. When this happesm the unit will discharge the warm water onto the ground, thereby relieving the unit and negating the necessity of an automatic shutdown. Furthermore, please know that the reason for some product adjustments or modifications may be considered proprietary, and are not released to the general public. If you have any other comments, questions, or concerns, please do not hesitate to contact us directly at 888-GENERAC (436-3722).
answered 3 days ago
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GeneracPowerSystems02
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Question

4- tip water broom blue & pink nozzle function

I ordered the water broom for my ONE WASH pressure washer & no instructions came with it. all I have is the 2 nozzles. what do I do with that? I am new to all this stuff, but did have a pressure washer of my husbands, but it didn't have an attatchment like the water broom.
State: PA - Pennsylvania
Age: 55-64
asked 1 week ago
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20ollieq
Berlin
on OneWash Residential 6602
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answer 1
The water broom and nozzles manufactured for use in conjunction with Generac’s OneWash power washer, model number 6602, merely attach to the product’s lance, much like the other nozzles otherwise provided with the unit. If you are uncertain as to how to appropriately attach any lance-based connections, please do not hesitate to contact us directly at 888-GENERAC (436-3722).
answered 1 week ago
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GeneracPowerSystems02
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Question

For the One Wash, what are the the two PSI settings that fall between the end points of 2000 psi and 3100 psi ?

State: GA - Georgia
Age: Over 65
asked 1 week, 2 days ago
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Jabooty
Atlanta
on OneWash Residential 6602
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answer 1
When utilizing the soap applicator, Generac’s OneWash power washer, model number 6602, can be lowered to 2000 psi; when utilizing the green (wash) nozzle, the unit will is capable of an output of 2600 psi; when using the red (blast) nozzle, the unit will operate as high as 3100 psi. Further information regarding this unit can be found in the product’s documentation, which can be accessed by utilizing the unit’s model or serial number here: http://www.generac.com/service-supp.... If you have any other product-related inquiries, please do not hesitate to contact us directly at 888-GENERAC (436-3722).
answered 1 week, 1 day ago
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GeneracPowerSystems02
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Question

Where can I find a OneWash manual.

It seems that I have misplaced my OneWash 2000-3000 PSI Manual.
Is there a place I can get a digital copy?
State: CA - California
Age: 18-24
 
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asked 1 week, 3 days ago
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Steward
on OneWash Residential 6602
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answer 1
Owner’s manuals, along with any other documentation pertaining to your Generac brand product(s), can be located online, by using your product’s model or serial number here: http://www.generac.com/service-supp.... If you are interested in obtaining a duplicate copy of a particular unit’s owner’s manual or installation guide through the mail, please contact us directly at 888-GENERAC (436-3722), with the model or serial number of the product for which you wish to receive documentation.
answered 1 week, 2 days ago
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GeneracPowerSystems02
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Question

electric or gasoline

if it uses gasoline is it easy to start?
State: TX - Texas
Age: 55-64
asked 1 week, 4 days ago
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stevee
Laredo
on OneWash Residential 6602
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answer 1
Generac’s OneWash residential power washer, model number 6602, features a gasoline-driven pull start engine. When appropriately configured, the unit should easily start up. Moreover, there is not an electric-start option for any of Generac’s power washers. Please contact us directly at 888-GENERAC (436-3722), with any other product-related inquiries.
answered 1 week, 3 days ago
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GeneracPowerSystems02
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Question

What kind of motor

State: GA - Georgia
Age: Over 65
asked 1 week, 5 days ago
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lace
Ellijay
on OneWash Residential 6602
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answer 1
Generac’s OneWash residential power washer, model number 6602, features Generac’s 212cc OHV engine. For further questions regarding a particular Generac product, please contact us directly at 888-GENERAC (436-3722).
answered 1 week, 3 days ago
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GeneracPowerSystems02
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Question

what is weight of unit

State: IL - Illinois
asked 2 weeks, 1 day ago
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skip
on OneWash Residential 6602
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answer 1
Generac’s OneWash Residential power washer, model number 6602, ships out at a weight of 91 lbs. Further information regarding this product can be located online, by using each unit’s model or serial number for searching purposes here: http://www.generac.com/service-supp....
answered 2 weeks ago
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GeneracPowerSystems02
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Question

How does the variable pressure selector affect nozzle choice?

If pressure is normally adjusted with nozzles, how does this impact nozzle selection?
asked 2 weeks, 5 days ago
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jsd
on OneWash Residential 6602
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answer 1
The OneWash power washer is designed to utilize one of 3 provided nozzles. Detergent can be applied with the soap applicator nozzle. The 25° “wash” nozzle has a pressure range between 2000psi to 2600psi, and is suitable for cleaning surfaces between one or two story heights. Please note that as the distance between the nozzle and the cleaning surface increases, the cleaning power decreases. The red 0° “blast” nozzle delivers up to 3000psi, but is only meant to be used on the brick/concrete application setting to remove stubborn stains from masonry and concrete surfaces. This red nozzle is used infrequently and should be used with caution, as it can cause unintentional damage to surfaces. Any damage caused by misuse or incorrect settings are not covered under the manufacturer’s warranty.
answered 2 weeks, 3 days ago
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GeneracPowerSystems02
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Question

Does this ONEWASH unit have a brass pump head?

State: OH - Ohio
Age: 55-64
asked 3 weeks, 4 days ago
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Rosco
Walton Hills
on OneWash Residential 6602
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answer 1
Generac’s OneWash Residential Power Washer, model number 6602, features an axial cam pump that has an aluminum body and a brass head, with a stainless steel plunger. For any other product-related inquiries, please contact us directly at 888-GENERAC (433-3722).
answered 3 weeks, 3 days ago
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GeneracPowerSystems02
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Question

What is the length of the pressure hose ?

State: TX - Texas
Age: Over 65
asked 1 year, 1 month ago
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happy2Bretired
Fort Worth
on OneWash Residential 6602
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2 answers
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answer 1
the hose is 30 feet
State: FL - Florida
Age: 55-64
answered 3 weeks, 4 days ago
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hector52
Orlando
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answer 2
The OneWash Series Power Washer will come with a 30 foot long ¼” diameter pressure hose that utilizes M22 threaded connections.
answered 1 year, 1 month ago
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GeneracPowerSystems01
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Question

I am thinking of purchasing the onewash from sears with the 300psi 2.8 gym model. How many hours is the engine rated for?

State: MI - Michigan
Age: 25-34
This purchase was for: Deck Cleaning
asked 3 months, 3 weeks ago
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Jb
Detroit
on OneWash Residential 6602
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answer 1
With proper maintenance, you can expect years of reliable service, but based on all of the different environmental and operational factors involved, we are unable to put an exact time frame on life expectancy of the engine.
answered 3 months, 2 weeks ago
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GeneracPowerSystems02
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Question

Where can I find a replacement thermal relief valve for my OneWash?

State: TN - Tennessee
Age: 55-64
This purchase was for: Deck Cleaning
asked 3 months, 3 weeks ago
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Carol
Chattanooga
on OneWash Residential 6602
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answer 1
To obtain replacement parts, we would recommend contacting an independent authorized service provider in your local area. To locate an independent authorized service provider closest to you, please use your zip code for shipping purposes here: http://www.generac.com/Service/Deal....
answered 3 months, 3 weeks ago
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GeneracPowerSystems02
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Question

Winterizing the unit

I purchased the OneWash for use on my farm. The unit is subjected to freezing temps, what precautions should I take to prevent damage to the pump unit. Thank you.
State: PA - Pennsylvania
Age: 55-64
This purchase was for: Boat/Auto/ATV Cleaning
asked 5 months, 2 weeks ago
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Pennst8rs
Dauphin
on OneWash Residential 6602
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answer 1
Information pertaining to the proper storage of a Generac OneWash Power Washer in cold-weather environments can be found in the Maintenance section of the unit’s Owner’s Manual under the “Winter Storage” section. To locate the Owner’s Manual for your unit, please either utilize the product’s model or serial number here: http://www.generac.com/Service/Manu..., or contact Generac directly for a tangible copy at 888-GENERAC (436-3722) so that we can obtain your personal shipping information.
answered 5 months, 1 week ago
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GeneracPowerSystems02
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Question

What is the best way to drain the oil to winterize the One Wash?

Great engine. A little difficult to fill, but I guess that is a function of the OHV engine.
State: NJ - New Jersey
Age: 55-64
This purchase was for: Siding Cleaning
asked 6 months ago
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Mjru75
Lanoka Harbor
on OneWash Residential 6602
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answer 1
To properly drain oil from the a Generac One Wash Power Washer, we recommend placing the unit on a flat, level surface. When draining the oil, please be sure to utilize a suitable container, into which the oil should be drained. For a list of steps regarding the proper way to drain oil from the unit, please refer to the MAINTENANCE section of the unit’s Owner’s Manual. To locate the manual online, please visit http://www.generac.com/Service/Manu....
answered 6 months ago
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GeneracPowerSystems02
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Question

How many horsepower is the motor on the Generac 6412 one wash 3000 TS I power washer

State: OH - Ohio
Age: 55-64
asked 8 months ago
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Chuck
Chillicothe
on OneWash Residential 6602
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answer 1
Generac does not rate it’s power washer engines by horsepower. The engines are rated by displacement, and the OneWash Series power washer utilizes a 212cc engine.
answered 7 months ago
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GeneracPowerSystems01
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Question

i dont have the bottle of oil that comes with purchase. What type oil do I need to use the powerwasher?

State: MO - Missouri
Age: 35-44
This purchase was for: Drive/Walkway Cleaning
asked 8 months ago
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akbuck
on OneWash Residential 6602
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answer 1
The OneWash series power washer are shipped from factory with SAE 30 non-synthetic oil.
answered 7 months ago
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GeneracPowerSystems01
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Question

Difference between 6436 and 6414

What is the difference between model #6436 and #6414?
State: FL - Florida
Age: 35-44
This purchase was for: Drive/Walkway Cleaning
asked 8 months ago
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Tw
Florida
on OneWash Residential 6602
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answer 1
The OneWash Series units, model 6436 and 6414 have the same features and components; however, model 6436 is a Sam’s Club model.
answered 7 months ago
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GeneracPowerSystems01
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Question

What is the difference between the 6321 & 6436 Models

State: NY - New York
Age: 55-64
This purchase was for: Drive/Walkway Cleaning
asked 8 months ago
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Mindy
oP
on OneWash Residential 6602
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answer 1
The model 6321 OneWash unit is a Lowe’s model rated at 3100psi that will feature our Premium gun, while the model 6436 is a Sam’s Club model rated at 3000psi that features our Standard gun.
answered 7 months ago
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GeneracPowerSystems01
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Question

Where would I find a replacement filter for the engine?

State: NC - North Carolina
Age: 55-64
This purchase was for: Drive/Walkway Cleaning
asked 8 months ago
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Wayne
Gastonia
on OneWash Residential 6602
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answer 1
Replacement and maintenance parts can be purchased through your local certified dealer. To find a certified dealer in your area, search your postal code here: http://www.generac.com/Service/Deal....
answered 8 months ago
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