Having problems with your Karcher Pressure Washers ?

Hose feed keeps shooting off the karcher when I release the trigger M520

\015 The feed hose connection keeps shooting off when I stop washing I have replaced the connections with brass fittings but it still will not stay connected. I seem as though there is a sudden back pressure\012Phil Williams\015

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Repair Help & Product Troubleshooting for Karcher Pressure Washers

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Hose feed keeps shooting off the karcher when I release the trigger M520


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I really appreciate the help and the information I have read so far. My Karcher K2400HH runs like heck until you release the trigger. Then, if I take the quick-connect nozzle off, pull the trigger and shoot a stream of water, I can then put the nozzle back on and it runs like heck again UNTIL I release the trigger. Then, it is the same process each time I release the trigger. Kind of frustrating.


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It sounds like you left out the spring in the hose.There are about 10 different models of K330 with several types of guns. Go here and search until you find ... Karcher K2.26 Electric Power Washer

We have a Karcher G2500VH pressure washer. If you start the engine with the trigger pulled on the spray wand it will run at full pressure until you release the trigger. after that, when you pull the trigger it will not have any more pressure than the water hose feeding it. Does it have an internal unloader valve? What is the part number?


Hi, Karcher calls the unloader valve a spill valve, this is a link to a full drawing/parts listing , and your fault description might well be a sticking /seized unloader(spill ) valve hope this helps ... Karcher 2500 PSI Pressure Washer

Karcher k2.360 modelonly one year old the hose connection to the handle trigger keeps shooting off


Make sure that the pin (item 1) is secure when the hose is pushed up into the gun. ... Pressure Washers

My 3.99 Karcher pressure cleaner seems to keep going on,off,on,off when i release the trigger.It used to keep going momentarly when the trigger was released until the pressure built up,then cut off until the trigger was pressed .Now it goes on ,off,on,off and has decreased pressure.


Hi! robcarrollDid you purge the air from the pump before starting the motor.InMrFixIt ... Karcher 2500 PSI Pressure Washer

I have a Briggs & Stratton gas power washer. This is the 1st time this year that I have used it. I put in fresh gas, hooked up the water supply. The engine started and then quickly stopped. I had to release the water pressure in the hose before I could pull start the engine. The only way to keep the engine running is to hold down the spray nozzle trigger. Once that is released the pressure in the hose builds up and the engine stops.


Sounds like the unloader is not working correctly. Try replacing it and see what happens. ... Briggs & Stratton Prosumer 20324 Gas Pressure Washer

I have a Karcher K3.99M when it is turned on and nozzle (trigger) is depressed nothing happens but after playing around with the nozzle trigger it comes on and as along as the trigger is depressed it will run, once you release it will stop and you will have to play with the trigger to get it active again. It sometimes hums even if the trigger is not depressed, please can some address this situation and identify what part is required?


... Alfred Karcher K 5.93 M Electric Pressure Washer

Have a Karcher kb4040 that continues to run constantly even when the trigger isnt pressed. Also water flows out of the detergant hose when im not pressing the trigger. Pressure seems down slighlty, not much. This happened after i ran water out of trigger gun with no lance attached, machine switched on. Seems to leak from trigger handle aswell. Many thanks in advance


This is two things. One is the back flow check valve to the soap line is leaking. The other is the pressure switch on the output side of the pump. ... Pressure Washers

Karcher engine still run's when gun trigger is released, as if the trigger is help down. Model K2.080


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When I switch my karcher k4.97 washer on it just sits and pulsates(on off on off etc.)When I squeeze the trigger it runs perfect,Then when I release the trigger it reverts back to pulsating.It leaks water when sitting idle.


Well, first the easy bit... the pulsation is caused by the leak, because the machine can't hold pressure when the trigger is released.  The difficult bit is: what to do about it?  Unfortunately, there are several different places where the ... Karcher Pressure Washers

Hi, I have a Karcher 3.75 jubilee powerwasher, there is water coming out from where the high pressure hose connects to the machine and the unit pulses when idling but works perfectly without drop in water pressure, when trigger on gun is pulled, on closer examination the metal connection on the hose turns, is this the problem or something else. thank you.


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When I use my Karcher pressure washer it works perfectly until I release the trigger. Instead of remaining silent until I pull the trigger again the motor intermittently, at approx 2/3 second intervals, starts and stops. Could you please advise what is causing this to happen please.


What it is doing is keeping the pressure up in the hose. It is completely normal for it to do that. they all do it. Listen to others in use and it will do the same thing. Nothing to worry about. ... Karcher Pressure Washers

When I switch my karcher k4.97 washer on it just sits and pulsates(on off on off etc.)When I squeeze the trigger it runs perfect,but emits a very low pressure.Then when I release the trigger it reverts back to pulsating. I have tried the popular fixes like cleaning lances,filters,making sure its not airlocked etc.I have even fitted new parts(seals to the pump etc).There are no leaks what so ever.


You have an internal crack in the out let head of the machine very comon in thease machine and not expencive to fix ... Alfred Karcher K 5.93 M Electric Pressure Washer

I have had 3 Karcher pressure washers all experience the same problem and so have two of my neighbors. Our area has very hard water and it causes problems with the washer not bringing up the pressure when the trigger is pulled (or surges up and down) and the nozzles clogging, etc. The service repair facilities cannot tell me how to prevent this. Many attempts to contact Karcher for advice have been ignored. I have been thinking that perhaps running the engine for a few seconds with no hoses a


If your water is that hard (and it appears it is) WD40 will NOT solve the problem. You should look into a water softener. However, chances are that a small, inexpensive model will not have the flow capacity required for a pressure washer. You'll like ... Karcher K2.26 Electric Power Washer

Karcher K3.92 M 1750 PSI poweer Washer motor won't start. Followed Reset/Test/Reset sequence with cord plugged directly into outlet. Light on cord near Reset comes on when Reset pressed down but goes off when Reset released (Normal?) Switch ON and trigger pressed releases water stream but no motor action.


They are sensitive to large extention cords. My father in laws pops reset when a small cord is used. If internally shorted- motor will continually pop the reset even plugged direct to outlet. Check voltage at outlet. ... Karcher 2500 PSI Pressure Washer

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 a good hose pipe jet should the motor speed up when trigger is pressed regards ****


Hi there!\015\012 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, ... Pressure Washers

Karcher 720 mxs fit dirt blaster to gun press trigger pressure low release trigger motor carries on running


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My karcher is a k3.97 and about 18months old. when i'm using it with the trigger pressed it works perfectly but when i release trigger the motor kicks on and off ar regular half second pulses


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I have same problem with Chicago Electric # 47761 electric pressure washer as Aug 10 2010 writer had w/ Karcher 2500. Runs briefly then stops. Pressure is trapped in hose. I cleaned hose disassembled & greased valve in handle. No improvement. Problem appears to be premature wear of trigger cam in handle - both are plastic. Valve body is rigid nylon. Any thoughts??


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Karcher 620M.To obtain high pressure I have to Move pressure control on nozzle several times until pressure kicks on. As soon as I release trigger and then pull it again, I have same problem -- giggl


... Pressure Washers

Karcher 3.97M Short cycles after trigger is released.


Dear csdamman,\015\012There is a valve called the spill-valve. It is often called the control valve. This valve activates the micro-switch. When the gun is released, pressure builds up and compresses this spill valve. At the same time it puts ... Karcher PSI Electric Pressure Washer

Nilfisk Alto Active Waterblaster.Starts up good. When I release trigger on gun it does not start pressure again. I have to take water hose off


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Karcher K 7.2 blows suction hose, inlet filter. What's wrong?


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I can use my Karcher K3 jet wash as long as i hold trigger down


I had this with mine; high pressure hose wouldn't click into the quick release connector. Both ends of the hose were the same, but infuriatingly they would both click and lock into the hand set. Thinking the connector on the sprayer body was faulty ... Karcher PSI Electric Pressure Washer
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