Question about Karcher 2500 PSI Pressure Washer

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Removing unloader valve

Karcher K2400 HH. After removing the (2) screws and spring, what do you use to grab the unloading valve to pull it out?
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You can hook it up to the water supply but many times you are going to have to start the unit up to get the unloader to come out. I would recommend putting something over the top of the pump so when it comes out you don't lose a eye. If you still have an issue with it not coming out you are going to have to pour some white vinagur down the cylinder and let it sit for a couple hours, this will breakdown any build-up inside the cylinder.

Posted on Oct 25, 2010

  • Justin  Wisniewski
    Justin Wisniewski Oct 27, 2010

    You have to be very careful if you are using needle nose pilers because you risk damaging the inside of the cylinder as you pull the unloader out

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If you can't get it out with needle nose pilers try turning the garden hose pressure on and the water should pop it out.

Posted on Jun 05, 2009

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1 Answer

I have a K2400 HH pressure washer. When I started using the machine this year, the pressure would last for a moment or two than quit. When I would shut off the pressure and wait a few minutes and start...


sounds like a weak or worn out unloader valve spring.



MODEL DESCRIPTION PRICE SN-060-216 Pressure SpringKarcher/53323910 $5.90cart.gif


You can find parts online through Karcher or Ebay if you wish.

I hope this helps!

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KARCHER 2400 PSI HONDA ENG GC SERIES 160 RESIDENTIAL PREMIUM


Hello there.

If the washer is loosing pressure then it needs to be looked at under warranty, im not sure where the fault would be, but another expert may well know.

If you don't get any suggestions then i would take it back and ask for a replacement or repair.

Hope this helps.

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How do i get the unloader valve out of a karcher pump


If you have a black cap on the top of your pump, the unloader is under that. It is called a spill valve and they sometimes can be a real pain to remove. I usually take a drill and drill a 3/32nd hole in the top of the valve, screw a long screw into the hole and use pliers on the screw to pull it out. You may have to try several times before you get it out. If you don't have a black cap on the top I would need to know the model # of your machine to help.

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Hi ruthkapres:
Here is a diagram. The unloader/spill valve is #12 on page D2 or F2 depending on your model. You must pull it out, inspect the o-rings for dents or tears and make sure the valve is lubricated with a good water proof lubricant.

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Hello:
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