Question about Karcher G3025OH Pressure Washer

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Will not keep pressure when trigger is pulled.where is the pressure regulator and how do i adjusted it or repair it

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If u follow the pipe to the pump the releif valve turn clockwise to up pressure

Posted on Aug 03, 2010

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Posted on Jan 02, 2017

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1 Answer

Pressure in nozzel sputters when trigger pulled


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jet size is too big for the unit and the pressure regulator
or the jet is partially blocked making the pressure regulator operat intermittently

May 10, 2017 | Water Garden

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Where is the inlet regulator on my karcher 3300 high pressure washer


no inlet pressure regulator as they work of mains pressure
the only pressure regulator ther eis works off the wand trigger
when the trigger is pulled the pressure in the line drops off and the regulator switches on the motor to produce high pressure
when the trigger is let off the regulator reads the pressure and shuts off the pump;or allows the pressure to by pass back to the inlet side of the pump

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Evolv 2 brad nailer no power


If you can check nailer on another compressor. If it works check your compressor, if not the nail gun is in need of repairs. Otherwise, reading the two guages on the compressor, check that the pressure in the tank is around 100psi and the regulated pressure is between 85 and 90psi. If not, regulated pressure is adjusted by the knob on the front of the housing. With a blowgun on the end of hose, connect the other end to the compressor. If you don't get any air the regulator may be broken and not letting air through. If you have air at the blowgun the problem may be with the nailer.

Apr 08, 2012 | Craftsman Air Tools & Compressors

1 Answer

My Generac pressure washer will work great for as long as I hold the trigger. If I release the trigger to move something or change positions and then pull the trigger again the pressure doesn't come...


Sounds like the unloader valve built-in to your system is sticky. Try lowering the pressure of the regulator to lowest setting then re-adjusting. This will place a different pressure /load on the valve. Also when you store your unit, displace the water in the pump with oil so that lubricant will prevent the unloader from sticking. If you continue to have problem, replace the unloader. Good luck

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1 Answer

When I try to start my gas-powered pressure washer, its very hard to pull the crank and I cannot start the motor.


When everything is working correctly, and your washer has an easy start valve, (easy start valve will allow you to start the machine with-out having to hold open the trigger) the engine should pull easily. Some washers do not have easy start and you must hold open the trigger on the wand to unload the pressure in the pump. If you are holding open the valve and still have difficulty, remove the water supply and pressure hose and let out all the water. If still hard to pull most likely something has failed or pump is low/out or lubricant. If lubricant is ok, try reducing the pressure adjustment to minimun and try starting. If it is now easy to pull, problem is related to pressure regulator /unloader valve. Try adding oil to water inlet and let the oil displace out all the water within the pump and let it set for a while. Good luck

Jun 17, 2011 | Garden

1 Answer

I tried to adjust the regulator and the back just screwed off of the body - any ideas on how to prevent that?


Possibly you were trying to adjust the regulator without having air flowing through it. You must squeeze the trigger on the gun and have air constantly flowing through it otherwise the regulator knob is very hard to turn against the pressure inside it. To set an accurate pressure, squeeze gun trigger (while connected to air hose) to get air flowing... then twist regulator knob out (or in the "-" direction) until air flow reads 0 on the regulator gauge. Then start twisting regulator knob the other way until you reach the desired pressure on the regulator gauge. Also make sure the regulator is attached with air flowing the correct way through it. There should be an arrow somewhere on the regulator body which should be pointing toward your spray gun.

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1 Answer

High pressure issue


THERE SHOULD BE A PRESSURE REGULATOR ON THE PUMP YOU CAN ADJUST FOR MORE PRESSURE THIS COULD BE THE PROBLEM. ONCE YOU PRIME THE UNIT THE REGULATOR SETS ITSELF AND WHEN YOU PULL THE TRIGGER AGAIN THE SEAT AND SPRING MAY BE STAYING OPEN AND NOT LETTING THE UNIT BUILD PRESSURE

Aug 19, 2009 | Karcher 2500 PSI Pressure Washer

1 Answer

Hi i have inherited a karcher kb9040.it has only been used 4 or 5 times so i dont realy know how it should sound when. water is suplied to it it surges when you pull the trigger you only get the presure of...


hi there!
when you got as good as pipe pressure,you need to accelerate the speed motor to have a good pressurise water for your purpose,the pressure washer has a surge regulating valve as you trigger water gun the pressure blow up,as long
as you pull the trigger on the pressure build up pressure it has also equipt with pressure switch to regulate pressure and for safety purpose.you can also adjust the nozzle by rotating gradually to slim the pressure water out put.have a nice day,don't forget to rate me.thank's

Apr 20, 2009 | Garden

1 Answer

North star petrol pressure washer. working fine, then no high pressure, checked water feed, water filter , pressure relief valve and gun nosall well work sometimes and keep working, when you release the...


Sounds like the regulator is sticking or is airbound. loosen the water connection and then tighten it back. Could also be that the trigger gun is faulty or needs adjustment. Hope this helped

Mar 12, 2009 | Karcher 2500 PSI Pressure Washer

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