Question about Karcher K2.26 Electric Power Washer

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Motor starts and stops

I have a karcher 3.86m electric pressure washer. when you turn on unit, motor cycles on and off. when you pull trigger unit works but at lower pressure.I've had it apart [ all of it] i see nothing wrong. I see the valve that turns machine on and off, when pressure goes up and down. but it looks ok. machine is older one, o rings are pretty soft still. but edges of rings look flat.

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  • 174 Answers

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

Posted on Jul 20, 2009

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Posted on Jan 02, 2017

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