Model #580751350 CRAFTSMAN Power Washer, Gas

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  • Pump Assembly
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Question and Answers

Q:

Leaking power washer

A:

The Managemylife web site is a good resource to find out what may be happening with your Pressure Washer. I did some research for you at Managemylife.com and found an excellent article that also has multiple expert answers at the bottom of the web page that addresses the most common questions that have been asked by other members. I hope this will help until your expert can answer your specific question. I attached the link below.

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Priscilla V -
August 06, 2012
A:

Hello Donald,

I'm sorry to hear that your pressure washer is leaking and I would like to assist you. If you have detergent injection, this may be the port that the washer is leaking from. It may also be leaking from the water temperature relief valve. Please reply with your full model number and I'll be able to assist you further.

Jerry C

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Jerry C -
Sears Technician
August 06, 2012
A:

Model number 580.751350, 3.5hp,1500psi, 2gpm Leak is from a manufactured hole in the side of the housing, not the detergent injection port. The leaking hole is just forward of the pressure regulator port. I don't remember it leaking from this area when the unit was new. The inlet water is city water, cold at all times. Leak occurs with or without the unit running and leaks immediately when the inlet water is turned on. Thanks for your help.

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Donald -
August 06, 2012
A:

Hello Donald,

Thank you for the reply with the model number. I have attached a diagram of the pump and circled the two ports that are possible. I believe that it is number two that you are referring to, and if that is correct, I think that this is due to a leak from the piston and cylinder. I suggest carefully disassembling the pump so that you can inspect the cavity around the piston and bearings. If it is leaking from there, the pump housing should be replaced and is not available.

Be sure to take photos of the pump disassembly at every step; it will help you a whole lot when it comes time to put things back together. If the leak is coming from the piston cylinder, you may be able to replace the piston, but I believe that it is a harder metal than the cylinder and it may not help. There is no way to know for sure until the unit is disassembled.

Please let me know if I may be of any further assistance.

Jerry C

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Jerry C -
Sears Technician
August 07, 2012
A:

Thanks for your help, Jerry; I'll try what you are suggesting concerning hole #2 which is where the water is leaking from. What would happen if I were to use Jib Weld and plug the outlet hole in the housing ?? Would I blow the pump housing up? Pressure seems to be OK when I have the regulator set to full pressure and clean the sidewalk or whatever.

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Donald -
August 07, 2012
A:

Hello Donald,

Thanks for your reply, it clarifies the issue for me. I strongly advise against plugging the hole, it will cause the housing to fill completely up with water and the bearings will fail and it is even possible that it could damage the engine, depending on the type of mount that it has. I would open it up and make sure that it isnt't just a seal or something that may be easily repaired. If it is the piston and cylinder, just run it until it either quits or the water leak is annoying enough that you do not want to use it anymore, you will have to then replace the pump or the whole unit, the cylinder assembly is not available anymore.

Jerry C

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Jerry C -
Sears Technician
August 08, 2012
A:

Thanks, Jerry

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Donald -
August 08, 2012
A:

Did you ever solve your problem? I'd be interested in the solution. Jerry: Is there supposed to be oil in the pump? Manual says to check it but no indication where or what the oil level should be or oil type. Thank you

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Jim -
December 05, 2013
A:

The answer seems to be "...your pump is shot... we don't carry the parts to fix it and you're screwed!" I have the same unit and the same problem and every time I buy Craftsman, I regret it. Get a replacement at Harbor Freight... It will cost half as much and probably last as long! Good Luck.

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steve -
July 23, 2014
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Q:

Power Washer leakiing

A:

I am sorry to hear that you are experiencing some difficulties with your Craftsman power washer. The Managemylife web site is a good resource to find out what may be happening with your Pressure Washer. I did some research for you at Managemylife.com and found an excellent article that also has multiple expert answers at the bottom of the web page that addresses the most common questions that have been asked by other members. I hope this will help until your expert can answer your specific question. I attached the link below.

Read More
James -
August 07, 2012
A:

I'm not sure which hole you're referring to on this. There should be a thermal relief that could be described as a hole. If water is coming from there all the time then the thermal relief has failed and will need to be replaced (this is what I suspect). If the thermal is not the hole you're referring to then I'll need a photo to determine if something has blown out, was pushed out (pressure), or left out (during manufacturing).

Thank you for using Manage My Life!

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Wade_B -
Sears Technician
August 07, 2012
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Q:

"hi, I have a #580751350 Craftsman 1500 psi pressure washer - Pump, item #22 seal how do U install it in the back of # 24 guide, the front 1 is easy, but the ba

A:

When replacing a part on an appliance, Manage My Life is here to help. While you are waiting for your expert answer, I did manage to find a link in where you can enter your appliance model number and a parts list diagram will pop up to guide you with your project. I hope my link is useful.

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Joseph P. -
July 13, 2011
A:

hey, yea I found the link, that's only for looking for parts, it does not show how the seal is installed, the view is not that great, but thinks for the help

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Broii4x4 -
July 13, 2011
A:

Thank you for your question.

I can understand that it can be a little difficult to replace some parts on the pressure washer.

When I replace seals on pressure washers I will rub a thin coat of 100% silicone grease on the seals and then start the seal in the location at a slight angle to get them started and then work them into the seat. You could also use Vaseline in a pinch.

I hope this will help.

Thank you for using Manage My Life.

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Sam A -
Sears Technician
July 15, 2011
A:

hey thanks, I already found that link, I the kinda guy that there's not much I can't work on, I do have an Idea on how to install the seal, just want some1 else to back it for me, I have fabed all kinds of things, lower rider cars, show trikes, motor cycles, stretch fuel tanks, front fenders, rear fenders, rework floors in limo's, replace side panels, cross supports, reinforced the floors in limo's, repaired the neat lights in limo's, repaired the A/C systems, U name it I just about have done it, wood work, electrical, iron work, mechanic, limo driver, lawn mowers, chain saws, fork lifts Big 1's and little 1's,, not to brag, but need some1 that has done 1 let me know or like I do everything else, I will learn on my own. thanks so much for U help guys, if I can help U'll just give me E-mail, I'll do the best I can

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Broii4x4 -
July 15, 2011
A:

Thank you for the update. You would be a great resource for our web site with you well rounded experience. I will forward you information onto Management. Sam A.

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Sam A -
Sears Technician
July 18, 2011
A:

hi, thanks for the info, Eye already found that link, I have already installed the seals into the guide, I did them the same way I would install the seals on Trackhoes when I rebuid the Hyd. cylinders, but thanks for the info to see the parts, the only thing Eye C wrong with the parts list is they don't show how many piece's of the part (0-rings, seals, screws) so you can order the right amount of piece's that you might need or want, but thanks for U help

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Broii4x4 -
July 18, 2011
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