Hi-

I have a lightly used 2 year old gas 2400 psi model 2400hh Karcher pressure washer. Honda engine.

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.

RE: Karcher pressure washer help!!!!!

Posted by: dodge6564 5 (My Page) on Thu, Mar 16, 06 at 15:27

The silver cap is a press on type, just pry it straight up. The service center wanted to charge $80 for just this fix, said it takes 45 mins. to do. I did it in less than 5. I used a star bit#27 to get the 2 bolts out, had to start the thing to get the unloader out and used my thumb nail to scrape the white stuff off (not much) and rubbed white litho grease on the unloader, put it back together and it works like new. pressureparts.com has the drawings and parts list for it so you can see what it is before taking it apart, it is really easy. ( they also said to grease it before buying a new one

Here is a link that might be useful: parts drawing

RE: Karcher pressure washer help!!!!!

Posted by: sam375 PA (My Page) on Wed, Apr 12, 06 at 16:37

Hi-

It's taken me awhile, but today I finally got around to taking it apart.

I can not seem to get the "piston" out, eventhough I hooked up the water and started it in order for the piston to shoot out. It has some white build up around it. So far the instructions are perfectly accurate up to this point. Below is a link to the diagram I found. I really appreciate all the help thus far. Any other methods of getting it out so I can clean it and use the whote grease and reassemble would be great!

this is the diagram link look at page 6 http://www.pressureparts.com/mmDEV/PDF/karcherparts/K2400HH-COSTCO%201.194-301.0.pdf

Here is a link that might be useful: Parts diagram

RE: Karcher pressure washer help!!!!!

Posted by: sam375 PA (My Page) on Tue, Apr 18, 06 at 15:58

I think I am in trouble. I took the 4 screws off the front and out came the oil. inside are springs and I am assuming pistons. I want to just put it back together now but do I need to put oil back into the area it cam out of or do I put it back together and just poor oil back into the regular area.