Question about Karcher 2500 PSI Pressure Washer

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Karcher 2400 Power Washer upload valve

Lubed and reinstalled upload valve with spring, all O rings and split ring. It leaks. Did I loose something or is there a specific way to reinstall. Everything is tight.
Is there a diagram available?

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The manifold has a small crack on it

Posted on Dec 28, 2008

  • Alvaro Domingues
    Alvaro Domingues Jan 07, 2009

    did i help?please rate!!

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3 Answers

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.

May 09, 2008 | Karcher 2500 PSI Pressure Washer

1 Answer

Karcher G3050OH Pressure Washer Spill / Unloader Valve (Bypass)


You should put 'locktite' on the male thread and screw it in all the way and lock it there. That is how it works ,the spring keeps the valve at the bottom closed during high pressure operation. When the gun is released the part with the o-ring is forced down resulting in the valve opening and then the pressure is by-passed.Those dont normally give trouble. Look for a blocked nozzle or a restriction somewhere in your high pressure hose.

Sep 07, 2009 | Karcher 2500 PSI Pressure Washer

1 Answer

Motor starts and stops


Diagram here
It could be the Overpressure valve is leaking #20
It could be one of the small valves is not sealing #14 and #15
The soap valve could be not sealing #7
I have also seen micro cracks in the cylinder head #8
Good Luck

Jul 19, 2009 | Karcher K2.26 Electric Power Washer

1 Answer

No pressure / Karcher G 2400 HH


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.

Jul 14, 2009 | Karcher G3025OH Pressure Washer

1 Answer

How do you clean the unloader valve on a power washer pump?


The unloader valve usually is replaced. I dont know if you can get o-rings for it. But if you want to take it apart, there will be a crown or cap style nut just below the spring. Unscrew it completely and you will be able to remove the spool. There is just a series of o-rings on it.

May 10, 2009 | Karcher 2500 PSI Pressure Washer

1 Answer

Karcher 2400: Won't stop spraying.


Dear sdadean,
I am assuming that when you said "wand" you mean the "gun". Myself I rarely service guns. But there are types that are serviceable and others that are not. If the brass elbow had 2 stainless steel pins....then this is a gun that you must replace with a new one. And putting oil, is the worst enemy....because oil damages O rings. Now the high pressure hose is fitted inside the brass part by being sealed by a black O ring and a white backing flat O ring. I do not know if these that you saw. Now if the brass has only one pin coming out from the back, this type of gun can be serviceable. Look at the brass at the place where the lance is attached. If you see a hexagon hole, this is a plug that can be unscrewed with an allen key. Behind the plug there is a ceramic seating. Then you find the valve and a spring. If the steel valve and the ceramic seating are damaged, the whole gun must be replaced.
To tell you the truth I usually change the gun and fit a new one, when the machine keeps on going because the gun does not close. I find it the best and the most safe way of solving the problem.
Regards,
Fulltech.

Apr 27, 2009 | Karcher 2500 PSI Pressure Washer

1 Answer

Pressure is fine when first started ,if trigger released no Psi


Your uplift injector valve in the water pump is sticking. You need to remove this part. Lube the top o-ring only with a water proof grease. Reinstall this part. You will be up and running again.

You need to use needle nose vise grip tool to easily remove the valve. You need to grind down the vise grip tool to fit the opening where the valve is installed.

To prevent this problem from reoccuring use a pump guard additive.

Apr 05, 2009 | Karcher 2500 PSI Pressure Washer

1 Answer

Honda power washer dont have presser


Your unloader valve is stuck in your water pump. Remove it, lube the top o-ring with silicone grease. Then reinstall it. Use pump guard additive to prevent this problem from reoccuring.

Jan 30, 2009 | Karcher 2500 PSI Pressure Washer

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