Question about Karcher PSI Electric Pressure Washer

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Karcher pistol gun has broken

The pistol gun started leaking and there was no pressure. I took the pistol srayer apart and found that the tube inside had cracked. I put a second pistol gun on and within hours the gun had also broken. Is there a pressure relief valve that can be adjusted? Karcher 650M

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  • Steve D May 27, 2009

    Hi what you say is posible but I dont use detergents and it just seems a bit strange I used 2 different pistol guns from 2 karchers and they both broke!
    many thanks for your time
    Kind regards 
    Steve

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Make sure you DO NOT have a check valve (this is what stops your hose running when you disconnect from the hozelock fitting) in your hose pipe system, This will send a shockwave through the pressure washer and destroy the fitting you mentioned. They can be easily removed.

Posted on Jul 25, 2009

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I do not think there is a pressure release valve , sounds like the plastic inside the pistol has become brittle and has failed under pressure , you dont say how old the pistols are ? and if you run strong detergents through them .

Posted on May 26, 2009

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Posted on Jan 02, 2017

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