Karcher pressure washer loses pressure...

Discussion in 'Home Repair' started by sammybar, Jan 26, 2009.

  1. sammybar

    sammybar Guest

    Hi all,

    My Karcher pressure washer loses pressure very quick. As a result when
    standby the motor restart the operation constantly for a few seconds.
    When operating the washer is fine and the pressure OK.
    A guy said it is a matter of a "seal" that needs replacement. He said
    it is an easy task. I have been googling for a while but it is no
    information on Karcher web site on repairing or servicing its
    machines.
    Does anybody did such a repairing? Any indications, hints available
    online? Any part catalog for Karcher is available online?

    Any hint is welcomed
    Thanks in advance
    Sammy
     
    sammybar, Jan 26, 2009
    #1
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  2. sammybar

    ransley Guest

    There are many seals on it, find the leak then you will know if its
    worth fixing. A friend used his Karcher every week for maybe 10 yrs
    only the switch broke even, mine is 4 yrs old, used maybe 8-20 hrs a
    year and its fine. I have heard they got cheap recently, if its under
    warranty have them fix it. Look for drips it should not leak.
     
    ransley, Jan 27, 2009
    #2
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  3. I repaired a Karcher washer not long ago. Had a hell of a time trying to
    find parts; finally ended up getting them from a little bitty place
    waaaay up in Pinole (anyone familiar with the San Francisco Bay Area
    will know how out of the way that is) that sold and serviced small gas
    engines.

    The Karcher site does have very good documentation for their washers,
    including exploded diagrams that make it pretty easy to locate the
    parts. I think the part I had to replace was a seal.


    --
    Made From Pears: Pretty good chance that the product is at least
    mostly pears.
    Made With Pears: Pretty good chance that pears will be detectable in
    the product.
    Contains Pears: One pear seed per multiple tons of product.

    (with apologies to Dorothy L. Sayers)
     
    David Nebenzahl, Jan 27, 2009
    #3
  4. Yep, you have a leak on the high pressure side. Probably in the
    connection where the little hose is suppose to pick up and mix the
    soap. I took that connection out of the line because I don't mix soap.
    Just hook up the high pressure hose direct to the unit. That was my
    problem anyway. Hope this helps.

    Hank <~~~always under pressure
     
    Hustlin' Hank, Jan 27, 2009
    #4
  5. sammybar

    sammybar Guest

    The Karcher site does have very good documentation for their washers,
    David,
    I have been looking around the Karcher web sites but all the
    documentation I can find is the user manual. Exploded diagrams will be
    very helpful for me but I can not locate where they are. Could you
    point me to the right place?

    Thanks you very much for your hint
    Sammy
     
    sammybar, Jan 27, 2009
    #5
  6. sammybar

    sammybar Guest

    Yep, you have a leak on the high pressure side. Probably in the
    Hank, It is no visible leak under the washer but through the high
    pressure output. When the trigger is loosen in the hand gun, it is
    still some liquid flowing out and as a consequence the pump restarts
    to maintain the pressure. That is why I think the problem is inside
    the pump...

    Thnaks for yout hint
    Sammy
     
    sammybar, Jan 27, 2009
    #6
  7. sammybar

    ransley Guest

    So you stop spraying, it leaks out the wand nozzle, and you think its
    the pump and a junk unit?
     
    ransley, Jan 27, 2009
    #7
  8. Aha, it's coming back to me; I didn't leave any notes or bookmarks from
    my previous search.

    So for some strange reason, Karcher doesn't have these documents on its
    web site. You have to contact a "local service center" (must be due to
    some contractual arrangement). Here's the note from their site:

    Regrettably parts breakdowns can not be obtained directly from
    Kärcher. Parts breakdowns for your model may be obtained by visiting or
    contacting a local service center.

    Kärcher does not recommend repairing internal parts of the pressure
    washer yourself. It can cause severe damage. Please visit an authorized
    dealer for repairs. Any internal repairs not preformed by an authorized
    dealer void all warranties.

    Please refer to Kärcher’s Service Center Locator to find your nearest
    location.
    Kärcher also recommends contacting one of our top distributors:

    R. J. Bowers (800) 383-6584 www.rjbowers.com
    Pressure Parts (800) 999-2245 www.pressureparts.com

    So I ended up making a bunch of phone calls, getting the runaround a few
    times, and finally finding the information I was looking for. Sorry, but
    that's the way things are set up there. If you're persistent you'll find it.

    This page, with all its links, is at
    http://karcher-usa.custhelp.com/cgi-bin/karcher_usa.cfg/php/enduser/std_adp.php?p_faqid=141

    (Just ignore their warning about DIY repairs. Ain't rocket science.)


    --
    Made From Pears: Pretty good chance that the product is at least
    mostly pears.
    Made With Pears: Pretty good chance that pears will be detectable in
    the product.
    Contains Pears: One pear seed per multiple tons of product.

    (with apologies to Dorothy L. Sayers)
     
    David Nebenzahl, Jan 27, 2009
    #8
  9. Then it is the valve on the handle. ANY leak will cause your problem.
    The valve is easy to get apart. Take it apart and clean it out. Should
    fix it.

    Hank <~~~has a better handle on things
     
    Hustlin' Hank, Jan 27, 2009
    #9
  10. sammybar

    sammybar Guest

    So I ended up making a bunch of phone calls, getting the runaround a few
    Thanks a lot!, I (you) found the exploded diagrams. It can help me a
    lot, thanks again...
     
    sammybar, Jan 28, 2009
    #10
  11. sammybar

    sammybar Guest

    So you stop spraying, it leaks out the wand nozzle, and you think its
    ....or may be it is a problem of the wand... You mean the valve on the
    wand may be leaking? I'll double check.
    Thanks for your advice
    Sammy
     
    sammybar, Jan 28, 2009
    #11
  12. sammybar

    sammybar Guest

    Then it is the valve on the handle. ANY leak will cause your problem.
    It sounds logical. May be you are right. I'll check. Thanks a lot!
     
    sammybar, Jan 28, 2009
    #12
  13. sammybar

    cloudy

    Joined:
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    just as a long shot....you can get the same experience if your water supply hose is too; small, crimped, long, or restictive of the supply.
     
    cloudy, Jan 8, 2019
    #13
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