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    kitch428's Avatar
    kitch428 Posts: 1,440, Reputation: 152
    Ultra Member
    		  
    #1

    Apr 11, 2010, 04:18 PM
    Pressure washer pump inop
    What's the most common problem when the pump quits. I have a Craftsman 6.5 OHV w/horizontal shaft motor. The pump is attached to the output shaft, or the front of the motor. Model 580.767300
    I took the pump face off and I can tell you this, the 3 pistons do move in and out, and the piston seals look good.
    I replaced all the O-rings and put the face back on, but absolutely no pressure comes out. Water will stream out the outlet (but w/o pressure) so there are no clogs. Engine runs great. Any Ideas?
    cdad's Avatar
    cdad Posts: 12,700, Reputation: 1438
    Internet Research Expert
    		  
    #2

    Apr 11, 2010, 04:51 PM

    Its possible it could be the internal valve that is stuck. It's a regulator valve.
    kitch428's Avatar
    kitch428 Posts: 1,440, Reputation: 152
    Ultra Member
    		  
    #3

    Apr 11, 2010, 05:06 PM

    I see a total of 6 check valves in my parts list. Hmmm, wonder if it's worth it. Thanks for getting back to me.

    Edit: 4/12 Sold it on Craigslist today. Off to Lowe's. Decided to get the Troy Built 3000 psi model.
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