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Genuine Pressure Washer Cylinder Head Stock Number: ES538413

Genuine spare part for select models of Karcher pressure washers

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I have changed the cylinder head and checked the water filter in the inlet but the problem persists. What else can be faulty?

By Anonymous - Portishead - 19 July 2011
  • If the cylinder head doesn't fix it then try replacing the Control head which is the plastic housing which sits on top of the cylinder head By Hillhound - Northern Ireland - 07 November 2011
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i have a karcher 4.91 which pulses during operation i have stripped it down and not found any obvious cracks but there is a dribble between the cylinder head and aluminium body during operation. do i need to replace the cylinder head or housing or seals etc???

By eyesblue36 - - 30 August 2010
  • I assume that the machine pulses when you release the trigger. Any sign of a leak will cause this as the machine needs to maintain pressure in order to keep the motor switched off. Also, a pocket of trapped air within the valve gear will have a similar effect. By Chip - North Notts - 31 January 2011
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By snibs - glasgow - 29 May 2010
  • eSparesMalindi from eSpares
    eSparesMalindi at eSpares says...

    Unfortunately we cannot give out technical advice. Please consult Karcher or an engineer for support.

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i have a Karcher K3 model that has developed a leak at the junction of cylinder head and the piston case, thereare no visible cracks in the head should I just replace the grooved seals or the whole head. does the head come complete with grooved rings.

By cainy - - 01 March 2010
  • eSparesMalindi from eSpares
    eSparesMalindi at eSpares says...

    Please speak to Karcher or a technician for help as we cannot give out technical advice unfortunately.

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By Hawkinsf - - 24 January 2010
  • eSparesMalindi from eSpares
    eSparesMalindi at eSpares says...

    Sorry we cannot give out technical advice. Please consult an engineer for help.

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if not what is the part number for valve and spring? When i disassemblied the head these parts and the white pistons in the cylinder head were melted. What would have caused this?

By Anonymous - Ireland - 01 November 2009
  • eSparesMalindi from eSpares
    eSparesMalindi at eSpares says...

    Sorry we cannot give out technical advice unfortunately. Please contact Karcher or an engineer for advice. Also, parts on our website usually arrive as displayed in images.

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To show the relationship between the completely re assembled cylinder head housing and the pressure switch. Not sure where the rubber switch should sit, above or below the housing. I have reassemled the unit but it will not now start. Did before repair (but leaked).

By aol3 - - 09 June 2009
  • You have the rubber switch in the wrong place, it needs to above the housing - just flick it with a screwdriver and it should ping into position. By carpediem - Oxfordshire - 13 June 2009
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By andybtt - - 12 May 2009
  • The only part I had to take off the ond cylinder head was a small valve and spring to fi in the new one. By flyfishing1 - Broughton, Preston, Lancs - 13 May 2009
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Is the Cylinder supplied complete ready to fit or do I need to buy rubber piston seals

By Rick000000000000 - Cardiff - 11 April 2009
  • The cylinder head is complete with piston seals. By flyfishing1 - Broughton, Preston, Lancs - 13 May 2009
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Genuine Pressure Washer Cylinder Head

36.71
(inc. VAT)
36.71