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North Star Model 157597 Pressure Washer from Norther Tool calims to have adjustable pressure. There is nothing in the manual about how to adjust the pressure and I have received two statements from them on how to adjust the pressure: 1. Adjust the pressure at the unloader valve 2. Run the motor at reduced speeds. Which, if either is correct?

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Posted on Jan 02, 2017

  • 6 Answers

SOURCE: Karcher G3050OH Pressure Washer Spill / Unloader Valve (Bypass)

You should put 'locktite' on the male thread and screw it in all the way and lock it there. That is how it works ,the spring keeps the valve at the bottom closed during high pressure operation. When the gun is released the part with the o-ring is forced down resulting in the valve opening and then the pressure is by-passed.Those dont normally give trouble. Look for a blocked nozzle or a restriction somewhere in your high pressure hose.

Posted on Sep 08, 2009

  • 1 Answer

SOURCE: Unloader Valve - Karcher Pressure Washer

where is the unloader valve locaed on a Briggs Stratton pressure washer?

Posted on Oct 03, 2009

kel1guy2002
  • 3740 Answers

SOURCE: I have a Pressure Washer

Derek, Hi and welcome to FixYa. I am Kelly.

I just now happened across your post and note it is 3 months old. Hopefully you already have the problem solved.

If not.. looking at the pump history of having the un-loader valve replaced it sure seems that the current un-loader valve is sticking. When an un-loader valve is removed the internal housing is sanded smooth and everything about the un-loader valve is coated with Lubriplate #105 White Grease. I get the feeling that who ever did the un-loader valve repair failed to sand / clean the housing and use White Grease for the final assembly.

You should remove the valve... Sand the housing and get some Lubriplate #105 white grease (auto parts store) in a tube. Lubricate it liberally and reassemble it. If should work fine after that.

Thanks for choosing FixYa,
Kelly

Posted on Dec 07, 2010

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