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Most Recent Questions
Recent Question:
What setting to use "OneWash" cleaning 2nd story wood siding?
Recent Question:
i have tried every water source, and input hose lengths, but still cant make unit work properly.. what is the minimum gpm/psi of the input water ??
Recent Question:
if you have a water tank would I need a water pump to connect
Recent Question:
how much does it weight
Recent Question:
does pump on one wash require oil book dosent say
Questions with Most Recent Answers
Question:
i have tried every water source, and input hose lengths, but still cant make unit work properly.. what is the minimum gpm/psi of the input water ??
Question:
What setting to use "OneWash" cleaning 2nd story wood siding?
Question:
if you have a water tank would I need a water pump to connect
Question:
how much does it weight
See all Generac Questions and Answers > Residential Grade Q & A

Customer questions and answers for
Generac Power Systems OneWash Residential 6602

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

Question

i have tried every water source, and input hose lengths, but still cant make unit work properly.. what is the minimum gpm/psi of the input water ??

State: PA - Pennsylvania
Age: 45-54
asked 1 week, 4 days ago
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dan
northern cambria
on OneWash Residential 6602
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answer 1
The water supply must be adequate to handle greater than 3.8 gallons per minute and no less than 30 psi. We do not recommend siphoning standing water for the water supply, and ensure that you use only cold water (less than 100°F). Moreover, if you plan on attempting to utilize a water tank, the garden hose that connects from the water source to the generator would need to be attached appropriately, so as to provide the necessary water flow to your residential power washer. If you have any other product-related inquiries, please contact us directly at 888-GENERAC (436-3722).
answered 1 week, 4 days ago
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GeneracPowerSystems02
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Question

What setting to use "OneWash" cleaning 2nd story wood siding?

I have a 2 1/2 story home with wood siding. What settings on my OneWash would be best for cleaning that high?
State: ID - Idaho
Age: 55-64
asked 1 week, 4 days ago
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by
rkshost
Ammon
on OneWash Residential 6602
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answer 1
The factory set pressure for the Generac’s residential power washer, model number 6602, is 3100 PSI. Due to the variation in engine speed, which is customer controlled with the throttle control, the PSI range, and pressure stream range, can vary. The unit will also come with 3 different nozzles, a 0°, 25°, and a soap applicator nozzle, each designed to tailor the stream of water to the job. Generac’s 3100 psi Power Washer is applicable to use on vinyl siding, so long as the appropriate nozzle is utilized. When utilized for cleaning siding, the unit is designed to be used with the black soap nozzle and the green 25° “wash” nozzle. The 25° “wash” nozzle has a rated pressure of 2600 psi. This pressure will be suitable for cleaning the siding on one or two story heights, but as the distance between the nozzle and the cleaning surface increases, the cleaning power decreases. The 0° red nozzle is the high pressure nozzle, and 25° green nozzle is a medium pressure nozzle. Always ensure you are aiming the wand in a safe direction, as the high pressure stream of water this equipment produces can cut through skin and its underlying tissues, which could lead to serious injury. Utilizing the proper pressure nozzle will ensure that the unit is effectively utilized on surfaces higher than ground level. Further information on the nozzles included and their suggested uses can be found in your owner’s manual. If you have any other product-related inquiries, please contact us directly at 888-GENERAC (436-3722).
answered 1 week, 4 days ago
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GeneracPowerSystems02
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Question

if you have a water tank would I need a water pump to connect

State: NC - North Carolina
Age: 25-34
asked 2 weeks ago
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by
Carl
on OneWash Residential 6602
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answer 1
Generac’s power washers are manufactured for use in conjunction with a pressurized water source. The water supply must be adequate to handle greater than 3.8 gallons per minute and no less than 30 psi. We do not recommend siphoning standing water for the water supply, and ensure that you use only cold water (less than 100°F). Moreover, if you plan on attempting to utilize a water tank, the garden hose that connects from the water source to the generator would need to be attached appropriately, so as to provide the necessary water flow to your residential power washer. If you have any other product-related inquiries, please contact us directly at 888-GENERAC (436-3722).
answered 1 week, 6 days ago
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by
GeneracPowerSystems02
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Question

how much does it weight

State: NC - North Carolina
Age: 25-34
asked 2 weeks, 1 day ago
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by
cj
Raleigh
on OneWash Residential 6602
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answer 1
Generac’s OneWash residential power washer, model number 6602, weighs 68.5 pounds. For further information regarding this unit, please use the product’s model or serial number for searching purposes via the following link: http://www.generac.com/service-supp....
answered 2 weeks, 1 day ago
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by
GeneracPowerSystems02
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Question

does pump on one wash require oil book dosent say

State: KY - Kentucky
Age: Over 65
asked 3 weeks, 1 day ago
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by
frank
payneville
on OneWash Residential 6602
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answer 1
The only oil that needs to be added to the unit would be via the engine’s oil fill points; the pump does not intake oil via a separate fill-point. If you have any other product-related inquiries, please contact us directly at 888-GENERAC (436-3722).
answered 3 weeks ago
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by
GeneracPowerSystems02
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Question

cost of product?

asked 1 year, 5 months ago
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by
Jay
on OneWash Residential 6602
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answer 1
With the ad posted the price is;
Starting At
$399.00 MSRP
State: GA - Georgia
Age: 45-54
answered 3 weeks, 5 days ago
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by
gepperso
Winder
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answer 2
For current pricing and availability in your area, you will want to contact your local dealer. To locate a dealer in your area, search your postal code here: http://www.generac.com/Service/Deal....
answered 1 year, 5 months ago
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by
GeneracPowerSystems01
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2out of 4found this answer helpful.
Question

generac one wash 6602

what spray tips can i use with the 6602, red is too thin for drive way, and green is not listed to be used on MAX setting for drive way.

Are there any other spray tip i can use on MAX setting for my drive
way?

Thank yopu very much!
State: FL - Florida
Age: Over 65
asked 2 months ago
Customer avatar
by
Lee
New Smyrna Beach
on OneWash Residential 6602
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answer 1
I purchased the Turbo Nozzle with my One Wash, and it works great on the drive way, it is very quick rotating spray and makes the job go faster.
State: GA - Georgia
Age: 45-54
answered 4 weeks ago
Customer avatar
by
gepperso
Winder
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answer 2
I purchased a 40 degree tip and it works great on my patio and drive.
State: MI - Michigan
Age: Over 65
answered 1 month, 4 weeks ago
Customer avatar
by
Larry
Jenison
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answer 3
When utilized for cleaning, Generac’s OneWash residential power washer, model number 6602, when utilized for cleaning siding, is designed to be used with a black soap nozzle, red 0° “blast” nozzle, and a green 25° “wash” nozzle. The 25° “wash” nozzle has a pressure range up to 2600psi. As the distance between the nozzle and the cleaning surface increases, the cleaning power decreases. The red 0° “blast” nozzle delivers between 3000-3100psi, 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. Besides these three nozzles, the only other nozzle offered for cleaning purposes is a turbo nozzle, which can be purchased through local retailers. If you have any other product-related inquiries, or would like to learn more about where you could acquire the turbo nozzle, please contact us directly at 888-GENERAC (436-3722).
answered 1 month, 4 weeks ago
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by
GeneracPowerSystems02
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Question

What is the difference between the 6602 and the 6413 models?

State: NJ - New Jersey
Age: 35-44
asked 4 weeks, 2 days ago
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Todd
New Jersey
on OneWash Residential 6602
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answer 1
There are many similarities and a few slight differences between Generac’s OneWash power washers, model numbers 6602 and 6413. Both of these units feature a spray gun, 20” lance with quick connect features, a 30 ft. high pressure hose, recoil starter, and choke mechanism. Moreover, both of these units feature a thermal relief valve, Power Dial, and drainable chemical tank; the thermal relief valve cycles water through the unit’s axial cam pump when water reaches 125°F, thereby preventing potential damage to the pump, and the Power Dial provides optimal cleaning power for each desired application. Each pump also comes with 3 different nozzles for optimal cleaning; the Blast (0°), Wash (25°), and detergent nozzles can be utilized for various high pressure cleaning applications. Both units also feature a constant flow rate of 2.8 GPM, and an oil capacity of 20 ounces. Also, both units operate between 2000 and 3100 psi.
The key difference between these two models IS that model number 6413 features a System Alert LED, which monitors the engine’s oil level and water supply pressure; while both feature a Low Water Shutdown, only model number 6413 has an LED warning depicting such a shutdown. The engine will shut down to protect the unit, and a fault indicator light will display on the control panel. Also, model number 6413 features a Low Oil Shutdown and associated alert, that of which is not featured on model number 6602. For further specifications or information regarding either of these units, please use the product’s model number for searching purposes here: http://www.generac.com/service-supp.... If you have any other comments, questions, or concerns, please do not hesitate to contact us directly at 888-GENERAC (436-3722).
answered 4 weeks, 1 day ago
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GeneracPowerSystems02
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Question

Why does this only have 3 spray tips?

won't having only 3 tips greatly limit its use and ability? why would they only offer 3 tips?
asked 1 month ago
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by
bobby
on OneWash Residential 6602
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answer 1
The three nozzles that come with this unit are the 0° (high pressure), 25° (medium pressure), and soap applicator nozzles, all of which provide three different types of pressure. Also, while the unit operates continuously between 2000 and 3100psi, in contrast to other residential power washers, the PowerDial Variable Pressure Control on Generac’s OneWash residential power washers also provides total control at the turn of a dial. This feature easily adjusts the intensity of the spray to clean a wide range of surfaces with a single, easy-to-use control. Further information on this unit can be obtained online, by visiting the following link: http://www.generac.com/all-products....
answered 1 month ago
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by
GeneracPowerSystems02
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Question

What is the length of the pressure hose ?

State: TX - Texas
Age: Over 65
asked 1 year, 5 months ago
Customer avatar
by
happy2Bretired
Fort Worth
on OneWash Residential 6602
+1point
1out of 1found this question helpful.
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answer 1
30 feet.
State: MI - Michigan
Age: 45-54
answered 1 month ago
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by
PainterJim
Grand Rapids
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answer 2
the hose is 30 feet
State: FL - Florida
Age: 55-64
answered 4 months, 2 weeks ago
Customer avatar
by
hector52
Orlando
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answer 3
The OneWash Series Power Washer will come with a 30 foot long ¼” diameter pressure hose that utilizes M22 threaded connections.
answered 1 year, 5 months ago
Customer avatar
by
GeneracPowerSystems01
+2points
2out of 2found this answer helpful.
Question

what is the size of the drain plug and can I pore chemical directly into detergant tank and not use siphon hose

not sure which oil drain plug to use to change oil ther appears to be 2 plugs also what size is the plug is it metric or Sae

is it ok to pore the chemical directly in the detergant tank and not use the sphion hose
State: TX - Texas
Age: Over 65
asked 1 month, 1 week ago
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by
Barry
Plano TX
on OneWash Residential 6602
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answer 1
Generac’s OneWash residential power washer, model number 6602, features two oil drain plugs that measure approximately 1 cm wide. Also, the detergent siphon hose on the unit connects directly to the pump via the siphon connection point described in the unit’s owner’s manual. The other end of the siphon hose is to be placed in a container of detergent; the pump pressure provides the necessary suction to incorporate the detergent into the high pressure water stream. Furthermore, please note that the black detergent nozzle, is the only nozzle that should be connected, when utilizing detergent. Also, any damage incurred to the unit if/when attempting to attach such a container, or siphon the detergent in any other manner will not be covered by the product’s warranty. If you have any other comments, questions, or concerns, please do not hesitate to contact us directly at 888-GENERAC (436-3722).
answered 1 month ago
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by
GeneracPowerSystems02
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Question

generac. onewash

I just bought and used the onewash. . I love it.. I only have a question about how I can adjust the detergent intake. It used a gallon of detergent very fast...can I buy an accessory if no adjustments can be made
State: CT - Connecticut
Age: 35-44
asked 1 month, 2 weeks ago
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by
pro
Fairfield county
on OneWash Residential 6602
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answer 1
Generac’s OneWash residential power washer, model number 6602, features a constant detergent intake; there is no way to manually adjust the rate of intake, nor is there an accessory for modifying the product. If you believe that you using too much detergent, it can be diluted further for your chosen purpose. Please note that any adjustments made to the unit may cause unintentional damage and will thereby void the product’s warranty. If you have any other product-related inquiries, please contact us directly at 888-GENERAC (436-3722).
answered 1 month, 1 week ago
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by
GeneracPowerSystems02
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Question

What type of chemical Injection system doew the 6602 One wash use is it up line or down line

State: TX - Texas
Age: Over 65
asked 2 months ago
Customer avatar
by
Barrylsu
Plano
on OneWash Residential 6602
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answer 1
Generac’s OneWash residential power washer, model number 6602, features an upstream detergent injection system. For further product information, please use the product’s model or serial number via the following link: http://www.generac.com/service-supp....
answered 2 months ago
Customer avatar
by
GeneracPowerSystems02
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Question

Can I use "Boat Soap" as the detergent in model 6602 or 6413 when cleaning my fiberglass boat?

State: MD - Maryland
Age: 55-64
asked 2 months, 2 weeks ago
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by
SeaHarley
Parkville
on OneWash Residential 6602
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answer 1
I believe the GENERAC Support Staff person meant to write, SHOULD'NT... as in you shouldn't use acidic solutions.

when they stated, "Also, please note that any acidic solutions, (including bleach, acids, or citrus scented soaps) should be utilized and are not recommended for use. "

Misuse of a contraction in English entirely changes the meaning. :)
State: WA - Washington
Age: 45-54
answered 2 months ago
Customer avatar
by
WilliamClay
Seattle
0points
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answer 2
Per the unit’s owner’s manual, power washer-safe detergents are the only detergents that should be utilized with Generac residential grade power washers. Also, please note that any acidic solultions, (including bleach, acids, or citrus scented soaps) should be utilized and are not recommended for use. Considering this, we as the unit’s manufacturer can recommend utilizing a mild (non citrus) dish soap, or liquid auto soap, when utilizing your residential power washer’s detergent nozzle. Any damage incurred through the use of such cleaning agents would void the product’s warranty. If you have any other comments, questions, or concerns, please do not hesitate to contact us directly at 888-GENERAC (436-3722).
answered 2 months, 1 week ago
Customer avatar
by
GeneracPowerSystems02
+1point
1out of 1found this answer helpful.
Question

engine oil

does the one wash have two places on the engine to add oil?
asked 2 months, 1 week ago
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by
nate
on OneWash Residential 6602
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answer 1
Generac’s OneWash residential power washer, model number 6602, does in fact feature two oil fill points; other models may only have one. When filling the unit with oil, please note that only one of the two fill points should be utilized; not both. If you have any other product related inquiries, further information on our products can be obtained online, by using the unit’s model or serial number via the following link: http://www.generac.com/service-supp.... If you would like to contact us directly, we can be reached at 888-GENERAC (436-3722).
answered 2 months, 1 week ago
Customer avatar
by
GeneracPowerSystems02
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Question

soap siphon setting

Does the OneWash need to be on a specific pressure setting before it will siphon?
State: VA - Virginia
Age: 35-44
asked 2 months, 1 week ago
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by
Jeff
Rosslyn
on OneWash Residential 6602
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answer 1
Regardless of setting, the power washer will incorporate detergent, when the siphon hose is appropriately attached to both the bottle of detergent and the unit’s pump. Please also note that the black detergent nozzle, is the only recommended nozzle for detergent use. If you have any other product-related inquiries, please contact us directly at 888-GENERAC (436-3722).
answered 2 months, 1 week ago
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by
GeneracPowerSystems02
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Question

Where can I see one to see if I want to purchase it?

I would like to look at your model 6414 and am looking for a place where I can actually see it to buy it near me...I live in New Port Richey FL 34652....any where here I can see it before I purchase it?
State: FL - Florida
Age: 55-64
asked 2 months, 2 weeks ago
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by
Stormy
Near Clearwater
on OneWash Residential 6602
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answer 1
Please note that model 6414 has alterations specified for use in the state of California. Considering this, a model of #6414 may be difficult to locate in the state of Florida. If you are still interested in this specific model, a similarly structured unit may be possessed by certain independent authorized dealers in your local area, and we would recommend discussing your desire for model #6414 with one of these dealers. To find a local independent authorized dealer in your local area, and inquire whether or not they have a model on hand that you could look at, we would recommend using your postal code via the following link: http://www.generac.com/dealer-locat....
answered 2 months, 2 weeks ago
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by
GeneracPowerSystems02
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Question

Is there a specific 10w-30 oil that is to be used when oil needs to be added ?

Oil to be added after running the machine and the low oil light comes on
State: ME - Maine
Age: 45-54
asked 3 months, 1 week ago
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by
Newme
Wells
on OneWash Residential 6602
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answer 1
DO NOT operate the washer until the low oil light comes on then check/add oil. Check the oil every time the washer is used or at least once a day for prolonged use. The lower the oil level becomes, the higher its operating temperature, and elevated temperatures reduce the ability of the oil to provide adequate lubrication. If the oil level is checked per the operating instructions, the low oil light should not ever come on except perhaps momentarily at startup.

Any of the nationally recognized brands of oil should be satisfactory.

One other personal recommendation is to add a fuel additive such as "Stabil" as today's fuels containing ethanol lose their "potency" rapidly, and attract water into the fuel, certainly between normal home pressure washer uses.
State: AL - Alabama
Age: Over 65
answered 2 months, 2 weeks ago
Customer avatar
by
Fearless
Chelsea
0points
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answer 2
Any quality motor oil is fine. Be sure to use the same oil when adding for best results.
State: VT - Vermont
Age: 45-54
answered 2 months, 3 weeks ago
Customer avatar
by
Jimbovt
Lincoln
0points
0out of 0found this answer helpful.
answer 3
If you are opting to utilize a 10w-30 oil on your OneWash residential grade power washer, model number 6602, any brand can be utilized, so long as a high-quality detergent 10w-30 oil is the selected product. Please note that a SAE conventional oil and 5W-30 Synthetic oil are also applicable options for use on your power washer. Further oil-related information can be found in your owner’s manual. To locate product documentation online, please use the model or serial number of the generator 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 3 months, 1 week ago
Customer avatar
by
GeneracPowerSystems02
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Question

what brand of motor is on the onewash pressure washer?

State: NY - New York
Age: 35-44
asked 3 months, 2 weeks ago
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by
DaveS
New York
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 3 months, 2 weeks ago
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GeneracPowerSystems02
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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 months, 4 weeks ago
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by
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 months, 4 weeks ago
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GeneracPowerSystems02
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