Question about Karcher K2.26 Electric Power Washer
The pump will not kick in and I have a major water leak from casing. Water pressure from the mains appears fine, but does not pressurise and a small amount just dribbles out of outlet. Furthermore, more water is pouring from the plastic venting area underneath the on/off switch. Internal filter is clear and seated ok. A little proding caused the outflow to cease completly but leak from casing contined. Would like to investigate myself but specilaist tools prevent me. Any advice welcome. Thanks Al Lancashire
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Posted on Jan 02, 2017
Most pressure washers when their gun is released, the machine stops automaticaly. This is done ny means of a control valve. When the gun is closed...pressure is built and the control valve moves and switches a micro switch off. In your case the micro switch is still closed in off position. Now this happens if a machine is left and stored with pressure in it., This control valve could get jammed and leaving the micro switch in off position. It could also stay in off position by sticking, due to incorrect chemical.
So the control valve or even called spill valve, must be renewed.
Sometimes a little lubrication with the right type of silicon grease will get the control valve working again. This job is sometimes delicate and better done by a qualified technician.
Posted on Apr 12, 2009
disconnect the hoses to and from the machine and the try it.
the machine might have a blocked nozzle in the lance, of so get a paper clip and clear the jet backwards
Posted on Jul 04, 2009
There is a valve called the spill-valve. It is often called the control valve. This valve activates the micro-switch. When the gun is released, pressure builds up and compresses this spill valve. At the same time it puts off the micro-switch. This will then stop the machine. Now when the spill valve is faulty it cannot hold compreesion under pressure so it starts de-compressing and starts the machine again. This goes on in a cycle as you explained. So you have to change the spill valve. If the spill valve that operates the micro-switch is part of the upper head,...then the whole head must be renewed. Myself I rarely service Spill Valves. The best thing is to renew it. From your explanation it seems that you did not take notice of this Spill-Valve. Infact when you mentioned Pressure Switch, I do not know if you are refering to the spill valve. If you are....then saying that the Pressure Switch moves and operates freely, does not mean that it is OK.
In certain machines in the outlet...there is a small valve, coloured black and red or green and yellow. This sometimes when faulty, it gives the fault you mentioned. Sometimes an inlet valve gives the fault you mentioned. But from my expirience it is most of the time that the Spill-Valve is the fault.
Posted on Jul 22, 2009
sounds like you need a seal and bladder rebuild < if you liver in a cold environmet for winters please dont forget to winterize your washres every year before winter
Posted on Sep 15, 2009
Hi This could be just the water inlet channel broken or split. You will need to remove the yellow cover via the screws at the back of the unit and then connect the water hose to see where the leak is coming from. If the water comes from underneath the pump then you will need a replacement pump seal kit of which you can purchase on the Internet.
Posted on Jun 11, 2010
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