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Pressure hose will not stay attached to the karcher unit. The pressure builds in the unit and it blows out the hose from the main unit

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: Karcher Power Washer Problem

I had the same problem with my Karcher. The recall was lifted Aug. 0f 2007. Tried numerous people at Karcher....head of Customer Service, vice president, etc. No one returns telephone calls not even cutomer service....poor, very poor customer service. Thinking about calling Germany.

Posted on Jun 14, 2008

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SOURCE: karcher k7.80 pressure washr

I have a Karcher K 3.86 M electric PW with a similar problem: water leaks from the pump near the outlet and the pressure surges on and off continuously at intervals of 1-2 seconds. The leak appears to be coming from a very thin crack in the plastic pump head in what I think is the "unloader" valve portion. I read elsewhere that if you leave water in these PW's and it freezes it will crack, causing leaks. I don't know how you can empty all the water out so I think we must store these PW's in areas that won't freeze in winter.

Posted on Jul 16, 2008

  • 101 Answers

SOURCE: pressure washer won't build pressure

The problem sounds like its in the handle.. trigger mechinism

Posted on Dec 15, 2008

  • 1 Answer

SOURCE: I have karcher 620m pressure

Try this. While pushing the trigger of the gun, turn lance fully anticlockwise and then turn back fully clockwise.

Posted on Mar 26, 2010

  • 1 Answer

SOURCE: I have a Karcher Pressure

karcher K3.97 MB when connected up to tap and switched on pressure poor and motor seems slow cleaned hose end, and filter looks clean

Posted on Jul 11, 2011

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1 Answer

How do I fix my pressure washer when the high pressure hose keeps blowing off.


If hose fits over a hose barb try using a hose clamp from any auto supply store Or replace the hose barb GL

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karcher K3.97 MB when connected up to tap and switched on pressure poor and motor seems slow cleaned hose end, and filter looks clean

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The garden hose was used to siphon water from a dirty pool. The hose was connected to the pressure washer without cleaning out the hose and turned on. After a few minutes he couldn't get pressure from the...


Hello, check the hose connection on the pump. There is generally a screen there to prevent dirt from entering the pump. Clean off this screen and all should be well.
joe

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Hose out of the karcher unit blows off


Sounds like you need a new hose if it keeps blowing off the unit, see attached link to purchase the hose.

http://www.wmpcs.com/index.php?main_page=product_info&cPath=81_55_58&products_id=286

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Pressure hose not working on Karcher pressure washer


A common problem with these is a pressure valve inside the unit that controls the power to the pump. If the unit has not been used for some time the valve can stick.

Does the motor run when you press the trigger?

Please respond and I will advise further. (add a comment)

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Karcher 360M pressure washer pulsating problem when idleing


Hello,


unfortunately these little units have this problem commonly, 9 times out of 10 it will be the plastic head or the plastic valve block on the unit will be cracked and leaking slightly... it builds up pressure then leaks out and tries to build up the pressure again and this just reoccurs over and over...

you can get this repaired but is normally about half the cost of a new unit, if the pressure is still okay i would probably recommend just keep using it until it proper dies...

If you do get this fixed, we have studied into this and believe the main cause of heads cracking is warm water say if your inlet hose is in the sun for a period of time this can cause the water to become quite hot or if the unit sits and water trapped inside the head assy freezes can also cause this. Hope this helps Kind Regards Brad

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1 Answer

Pressure washer starts then shuts down in 2 seconds


hey mate,

It sounds like your bypass valve/unloader valve is sticking when pressure builds up in the lance,hose and head the pressure cleaner changes to a recirculate mode so it does not blow out hoses or seals or causes any damage to the unit, the bypass valve is the component that activates this sequence if that valve is stuck it will just try to continue to create pressure which in turn puts load on the engine and stalls it...

That is why it starts up straight away and only when it builds up pressure is when the engine stalls.

You would be best taking this to a qualified pressure cleaner technician as there are alot of little parts and orings plus the the head will need cleaning up and the bypass valve lubed, they may not of seen this at the service as it is hard to test a unit without the suited hose and lance... Often use will help this problem when a unit sits for a period of time that will cause issues such as this!!!

Regards
Brad:)

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1 Answer

My karcher pressure washer is switching on and off when the wand is not being used. the pressure should hold but it appears to cut in and out every 2 secs. the machine works o.k. when pulling the wand...


unfortunately these little units have this problem commonly, 9 times out of 10 it will be the plastic head on the unit will be cracked and leaking slightly... it builds up pressure then leaks out and tries to build up the pressure again and this just reoccurs over and over...

you can get this repaired but is normally about half the cost of a new unit, if the pressure is still okay i would probably recommend just keep using it until it proper dies...

If you do get this fixed, we have studied into this and believe the main cause of heads cracking is warm water say if your inlet hose is in the sun for a period of time this can cause the water to become quite hot or if the unit sits and water trapped inside the head assy freezes can also cause this.

Sep 05, 2009 | Karcher K2.26 Electric Power Washer

1 Answer

Cant change the high pressure hose on a Karcher


On the Kärcher, you have a bayonet mount at the base of the tip end of the pistol grip. This is where you attach different types of nozzles and gadgets after having removed the existing sprayer tube. Just push in and turn a quarter of a turn, then you pull it off the pistol grip. The hose is possible to remove from the machine as well, an ordinary threaded mount but since you need the pistol grip to regulate on/off this is probably not what you want to do. If the telescopic wand is made by Kärcher it should be very easy to snap it into place just like when you removed the sprayer tube/nozzle. If the attachment was made to fit Alto washers there is an inexpensive adapter that works very well. Good luck!

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4 Answers

Karcher Power Washer Problem


I had the same problem with my Karcher. The recall was lifted Aug. 0f 2007. Tried numerous people at Karcher....head of Customer Service, vice president, etc. No one returns telephone calls not even cutomer service....poor, very poor customer service. Thinking about calling Germany.

Jan 11, 2008 | Karcher 2500 PSI Pressure Washer

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