It runs but water comes out of it as if it is just a hose and no pressure.
Last year the pressure would go in and out and this year nothing.
Garden hose and house water pressure fine. No leaks also. I want to take it apart and try some things to fix it myself but I don't even know where to begin or have a good diagram to go off of. Instructions are not good, and it was NOT wintered in the cold. What is the pump spray I seen online at sears.com for? Called Karcher and did the 2 things they said.
Any help would be greatly appreciated.

tommyw,
Thank for suggestions in this thread and the personal emails.

You stated that storing a pressure waasher outdoor's in winter will kill them. Do you know what happens to them, and is there a way you can winterize it so you could store it in the cold?
I was planning on keeping the washer I got over the summer in the shed, but not sure now.

Thanks
Aaron

Make sure you are reassemble the parts the right way

Just a note, This mixture would most likely prevent your pump from freezing and damaging it, but I still keep my pressure washer in a cold basement that does not get below freezing. just want to be safe. .. New pump is a couple of hundred dollars or more.

Regards, Pag

The parts list for this model is hard to find. I obtained a hard copy from a dealer. I see that the pump is identical to that on the HD3000 series models. You can find the parts manual for the HD3000 series at http://pressureparts.com/OwnersManualsK1.aspx . Could someone please point out where the unloader is on this model? Thanks

Anyway, I have the same problem "mlthorn" has. My pressure washer will lose pressure for a few seconds and then kick in again at full pressure. This happens several times for the first few minutes of operation and then it seems to be fine.
Is that just the nature of the Karcher pressure washer or am I doing something wrong? The pressure washer is only a few months old and I have only used it three times.

Thanks, Brad

Any assistance is appreciated.

I bought a new valve and the repair guy gave me some light file paper and burnishing rag. I cleaned out a lot of the gunk on the inside of the cylinder, and then cleaned it with electrical cleaner.

He also gave me a dime sized of some sort of orange grease which he said would help keep the minerals from depositing. It was MUCH better than the white lithium spray grease.

I greased the cylinder, the new valve (that was $27), and re-assembled it. Problem solved.

He did note that after you shut off the engine, run water through the wand for awhile to help the pump cool down.

I used synthetic grease for wet applications and greased both the valve, sleeve, stem and bore. I also went ahead and cleaned the filter screen on inlet and ran gun without tip the remove any trash in it and made sure no blockage in the tips..works perfect now

Thanks in advance.

I have a slightly used K 2400 HH Karcher washer. I keep it in a warm garage when I am not using it. Last January, I took it to the church bike shop to clean up some bikes to be repaired. I hooked up the garden hose and filled it with water. Then I hooked that up to the washer and turned it on. I started the machine and began to use it noticing that it seemed to be running a little rough. After an interruption, I shut it down and did a few other tasks, then returned to restart the machine. This time it ran really rough, like it was under a heavy load. Soon it stopped running completely.

I disconnected the water supply and made sure the water line was okay. Then I hooked it back up and tried to start it. This time, it acted like the whole unit was locked. The pull cord would not move on the Honda engine.

Service shops are not close, and Karcher won't answer a phone inquiry. The on line folks claim it is a motor problem. Having had experience with Honda engines before, I tend to disbelieve their motor problem claim.

Has anyone with this forum ever experienced a similar problem with a Karcher washer? Could this all be related to the unloader problem listed in this forum?

I had the same problem with no high pressure and followed the above directions to lube up the piston and now it works like new. At first, I removed the cap, hooked up the water, put a rag on top and started the motor but the piston did not move. I forgot to hook up the gun and when I did and restarted the motor, *POP* out came the piston. Just an FYI because I didn't see it specifically mentioned above.

Tony

Thank you,
Robert
06/15/2009

The hose has started blowing out when the motor is running.

The male and female parts of the connection to the main body are plastic, and there are signs of thread stripping.

I have phoned Karcher and they are unhelpful.

I am thinking about using some sealant on the threads, as sending it back for repair would be impractical as well as expensive.

I appreciate that this would lock the hose on, and I would appreciate any advice on this matter.

Perhaps someone else has had this thread stripping.

Thanks

Anyone know where you can buy just the o-rings for the unloader valve and related parts- seems like they want to sell you - $50 worh of parts that you do not need?
Thank Much, Albert

I borrowed it and want to make sure everything is right before I crank it up. The owner hasn't studied anything about it yet. Wants me to show him how to use it when I fugure it out. It's one of those on a trailer with huge water tank.

Puzzled how high the pump oil level is supposed to come up inside filler housing. They say don't over fill but the book or anybody on the web doesn't elaborate where the level is .. just drain and put 12 oz in there. I think it needs a little added but at what level do I stop pouring?

Pump Shown in below address.

In the photo ... which arrow might be the max oil level 1,2 or 3 or maybe none of them. I look down in there and see metal pump parts but its not drowned in oil like I imagine it should be.
http://i182.photobucket.com/albums/x57/bluebrakes/pump.gif

Also does the pump on this particular machine require water flowing if engine is running? My other washer which is electric said the pump will get too hot without the water turned on.

Thanks

Charles

The site below has a parts tree for Karcher brands.

Type CTRL F in the list of model numbers to open up your computer's find window then type your model number in to locate it in the list. If in there, click that model number to view a PDF file of all the parts on your machine. Write down the stock number of the part you want then go back to their site and type it in their search box to bring it up and order it. You can save the PDF file to your hard drive if you want by clicking File/"save as" or what ever your particular browser phrases it.

http://www.m-and-d.com/karcher_parts.html

Charles