Question about Karcher 2500 PSI Pressure Washer

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When I power the Karcher 520M water pours from the handgun - there is now leak until pressure is applied. the pump does not cut out but I don't know if this is a problem with too much pressure causing the leak or too little pressure because of the leak. there does not seem to be a way to dismantle the handgun - is this correct Bill

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Not too much pressure, a bad gun.
Unfortunately you will have to replace the gun. About $65.00 Canadian

Posted on Jul 25, 2009

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There needs to be watter flowing so the pump dosnt burn up there is a problem if it keeps spraying when the pump is running.

Posted on Jul 23, 2009

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1 Answer

My karcher k2.20 motor keeps running even when i release trigger and water is pouring out from inside the casing....


You need to get the casing out of your way so you can see exactly where the water is coming from. Best guess, just starting out, is that the pump has an "Easy-Start" valve on it that is not closing. This Easy-Start device is just a small valve that has a ball and seat and spring in it. Very simple. It allows all water flow to be diverted until the engine RPM comes up to "cranked" stage.

All that said, it could be something else entirely. So, we gotta have some eye-ball input at this point (if there doesn't seem to be an Easy-Start valve leaking).
Don

Mar 23, 2012 | Karcher Garden

1 Answer

Leaking handgun karcher k785


Hello sir, that is a on going problem with power washers the pump not working, than works sporadically. the main cause is leaving the pressure hose hooked up to the machine over a long period of time,not draining hose & machine, in the winter time the hose & pump will freeze causing hose & pump to expand and burst.handle to leak busting the o rings, build up of calcium deposits from hard water clogging up pump nozzle,valves in the gun handle,clogging hose fittings and screens.one of these has to be your problem.you can find a parts brake down at KARCHER.COM.orRJ BOWERS.COM . and manuals,these are good info,sites,hope this helps.thankyou. !!

Feb 19, 2012 | Garden

1 Answer

I have Karcher 520m and when you press the trigger you can hear what sounds like a relay engaging but there is no water pressure, then it will fire up and work, but next time you press the trigger the...


The issue you are having is with the unloader valve in the pump. Now with the 520m it is a little bit harder to repair than with more gasoline powered pressure washers but it can still be done. It would be easier if I could just send you a email of the breakdown on the machine. Send me a email to justin@wmpcs.com with the discription of the problem you are having.

Oct 10, 2010 | Karcher 1750 Psi Elec Pressure Washer

1 Answer

Karcher K2.26M water leak


I have the same Problem, the leak is from the seam of the Manifold housing. There is a small crack in the seam. A manufacturing defect.. A New Manifold Complete Replacement K2.26* Part # 97501760 is $61.03, about the half the price what I paid for this pressure washer at Walmart... :( If under 1 year old, and you can find a receipt,Karcher will replace the whole Pressure washer under warranty.

Jul 03, 2010 | Karcher K2.26 Electric Power Washer

1 Answer

Water pouring out from bottom of machine leading to loss of pressure


You will need to remove the main cover and see where the leak is coming from. Could well be either the water inlet or the main pump seals .

May 20, 2010 | Karcher PSI Electric Pressure Washer

1 Answer

Karcher k1 leaking from inside casing.


The most likely issue, which seems to occur alot with karcher, is a cracked water pump. What happens is that as you release the trigger on the handle, the rise in pressure should cut off the motor, but as it also cuts off the water flow at the wand end and the motor spins a few more revs until it stops, then there is a huge pressure glitch which blows apart the weak plastic pumps that they use. Since the plastic cracks it is very difficult to repair and the only option is to go and buy another. BUT...this time tape up the trigger on the handle so it is always on and then it won't blow itself up. Just use the unit on/off switch to turn the motor on and off.

Apr 11, 2010 | Karcher Garden

1 Answer

Karcher 520m oil leak


small engine shop should be able to obtain the proper gasket for you.....oil 20 weight fill untill you can see it at the bottom of the threads at the whole you pour it into!

May 24, 2009 | Karcher 2500 PSI Pressure Washer

1 Answer

I was using the pressure washer and it stopped having high pressure and motor keeps doing a varoom--- pause----varoom----pause and does not stop doing this even with the wand off. Does anyone know what to...


This problem, where the unit continually switches on and off when the handgun is closed, is quite common. Unfortunately it has at least six different possible causes, only two of which are easily checked. 
The first thing you can do is look for leaks.  Even the slightest leak will cause this pulsing because the unit gets up to pressure, switches off, loses pressure, switches back on again, comes back up to pressure, switches off... and so on.  This repeated switching is not good for the motor and should not be allowed to continue for longer than necessary to observe what's happening.
So... 1. Does the handgun shut off completely, or does it drip? If it drips, it may simply be because a seal has failed. The handgun can be dismantled, checked, and any defective parts replaced; be sure to lubricate O-rings with silicone grease when reassembling. As a last resort, the whole gun may need to be replaced.
2. Are there any visible leaks at the high-pressure hose screw connections?  If so, most likely an O-ring needs replacing - again lubricate the new one well with silicone grease.
3. If there are no visible leaks, either from the gun or from the connections, all other possible causes are internal within the cylinder head or control head of the pump. New parts will be needed and this normally calls for a professional repair, although it's not beyond the scope of a truly competent amateur.
I hope this helps. Any further questions, just ask! Please remember to rate this response.

Apr 16, 2009 | Karcher PSI Electric Pressure Washer

1 Answer

Karcher 520M wont operate at high pressure


The solution is very simple. All you have to do is change the spill valve.
This because the spill valve is not worth servicing. The actual problem is that the spill valve is leaking from its bottom-part seating. When you close the gun, the spill valve goes down, opens from the underside, and switches the electricity off. When you press the gun, the spill valve returns to normal, and if the underside does not close, you have low presure, because the water keeps circulating.
Regards,
MG. (Karcher service engineer).

May 05, 2008 | Karcher 2500 PSI Pressure Washer

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