The washer in the pic belongs to my father....2002 Excell by Devilbiss. Engine wanted to die when he let off the trigger, so he talked to some people and determined that a stuck unloader valve on the pump was at fault. So I ordered part # A03928SV unloader kit off ereplacementparts.com. Comes with the shown parts and instructions....assuming I had the "one piece" unloader because mine is the longer of the two and doesn't appear to have a removable seat in the pump housing.
I tried to press in the seat (big end out) with a pin punch of roughly equal diameter with no luck. The machine was on its side when I tried this, so gravity was my friend. After that I just screwed in the unloader by itself and of course the washer didn't build pressure. I believe this is because the new, shorter valve is just letting water by without the extra seat in there for it to sit on.
After some additional research on another forum, I attempted to disassemble/clean the original valve. I thought I had it freed up and also played with the adjustable spring tension, but after reinstallation the washer just ran and sprayed no water......!?
Anybody have experience with this setup? What did I do wrong?