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I bought a Craftsman vertical PW with a "bad" pump on Marketplace. The motor would start fine but stall when taken off choke. I removed the unloader valve and with it out, the motor would run fine when taking the choke off. Suspecting something locked up, I disassembled the pump and found a sliver of aluminum under one of the brass plugs. I also disassembled and cleaned the unloader valve.

I have a strong spray now and the motor doesn't stall. I just adjusted the unloader to where I thought the spray should be.

The thermal relief valve now goes off after about a minute of not spraying, but otherwise all is well.

1) What is the proper way to adjust the unloader if I don't have a tach or specialized tools?

2) Is it normal for the thermal relief valve to discharge when the pump is running but no spraying taking place?

3) Should I just run this until it dies, then buy a new pump?

Thanks in advance!
 

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I would replace the pump.
power washer mall should have one that will bolt up to the engine
click here the pw mall link is on the bottom of this site page
they have good prices.
and is a good place for the extra fittings, orings etc.

I use a pressure gauge on all of the fleets power washers.
that way it is easy to setup the pressure for the job you are doing.

is this a hot heated water washer??
or just a plain power washer?
 
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