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Karcher wont start

Hi i have Karcher K2.300 and have problem: machine wont start anymore. Before it started as it should but once i turned it off to get coffee, in 5 mins i wanted to run it again so i switched it to ON and nothing no sound nothing.....then i left it in shed and tried again in few days, again it started but when i switched it OFF and wanted it to use in next 10minutes it didnt start at all. Now after few days later it wont even start first time i wanna use it. No noise nothing. Pls help what may be wrong and how much repair may cost me. Thanks

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There is a pressure switch in those machines that goes bad. it is a common problem. if its under warranty let them work on it. if not take it apart and you will see the problem. it is replaceable and you can do it.

Posted on Mar 29, 2014

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Posted on Jan 02, 2017

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SOURCE: Electric Karcher pressure washer surging when turned on

Dear firenutt681,
One simple thing you can do, is to check for leaks. Check if hose at machine is leaking. Check gun if it is leaking. You can also check if water still comes out of lance nozzel. These leaks however so small, will cause the machine to surge.
Another reason is due to a faulty SPILL VALVE. This spill valve( often called CONTROL VALVE) will contract when the gun is closed. When it contracts under the enclosed pressure it will switch off the machine by means of a Micro Switch. Now if this Spill valve is faulty it will loose its compression under pressure and puts on the micro switch again. This can be seen once in a while or more frequent, as in your case. I sometimes do service Spill Valves, but mostly I replace them with a new one. I do not know the model number of your machine, but normally you have to open the cover and you should spot the spill valve on the head. Most probably you see a thick wire or a cap containing the micro swith. If you find the micro switch, you have found the spill valve. Sometimes it is a bit hard to pull out the spill valve. Myself, in various Karcher models I remove the spill valve by trying to feed water and put on a bit the machine. In this way the spill valve will be spitted out.
Another reason which makes your machine surge, is leakage from from the detergent inlet.
If you do not see no leakages at all....then for sure it is the SPILL VALVE.
If you cannot do this job yourself or you do not find spare parts...you can continue using the machine as it is...but before closing the gun...switch off the electricity. I only recommend this in an emergency. You do this so that you do not leave the machine surging. This surge will for sure damage the electric motor and the capacitor (assuming it is single phase).
Regards,
Fulltech.

Posted on May 30, 2009

  • 6 Answers

SOURCE: Australian Karcher 2.91 intermitant start

Under the top cover there is a micro switch that sometimes dislodges
This switch is for auto cut off when you release the trigger

Posted on Jul 27, 2009

  • 56 Answers

SOURCE: I have a karcher 495, it is puslating when it is

It sounds like there may be a pressure leak somewhere in the system. The machine cuts off when there is no flow of water past it. If it is leaking then there is intermittent flow. Which would make the machine run then stop continuously.

Posted on Nov 16, 2009

brado83
  • 106 Answers

SOURCE: 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

Posted on Jan 02, 2010

Testimonial: "Thanks very much brado83. The cycling interval has now increased, so I am going to try to fix this myself.You have confirmed my part suspicions.Cheers"

acehead
  • 107 Answers

SOURCE: My Karcher 2.99 starts and stops, (pulses) when th...

http://www.youtube.com/watch?v=8XDPDhg_acQ&list=UUiF9Qw4CmLuBqWFGanj1KIA&index=14&feature=plcp

Posted on Aug 25, 2012

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