Having problems with your Karcher 1750 psi Electric Pressure Washer ?

Kb9030 karcher pw hunts on and off when trigger is not depressed


Answers :

Repair Help & Product Troubleshooting for Karcher 1750 psi Electric Pressure Washer

Tips for a great answer:

- Provide details, support with references or personal experience .
- If you need clarification, ask it in the comment box .
- It's 100% free, no registration required.

Suggested Questions/Answers :

Kb9030 karcher pw hunts on and off when trigger is not depressed


... Karcher 1750 psi Electric 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

I have a KARCHER Model K 2401 which onstart up has normal water pressure rather than the high. I can usually get it to work by removing the tip, pressing the trigger and running some water through without the tip on. The i replace tip and it will usually retain the high pressure. If I stop depressing the trigger I have to go through these same steps. It is like it loses prime. It works well once I get it started putting out the high pressure.


... Karcher 2500 PSI Pressure Washer

Hope u can help when the karcher is conected up and the trigger on the handle is not depressed the machine makes a noise like its trying to presureise the hose it keep kicking in and out i have lost the pressure although it works its not a high enough pressure to be effective


The power washer stops when the gun is closed. This happens because pressure is exerted on a control valve (Spill Valve)...which in turn touches a micro switch and cuts electricity. Now most probably your machine is kickin in an out because the spill ... Karcher K2.26 Electric Power Washer

Lack of pressure in a karcher 455. motor powers on changes sound as trigger is depressed but water remains at mains pressure. oil replaced and had no water in old oil. any ideas.


Most cases the engine is used on many different units find one of those for a pump ... Karcher 4.550-620.0 pressure washer part 45506200/4.550-620.0

The washer hunts when trigger released - Karcher 1750 psi Electric Pressure Washer


Hi, if you have the smallest of leaks on the outlet side of the machine then the machine will hunt.\015\012if not that, then you have a non return in the outlet of the machine,the non return has got a little o.ring which is most probably worn. ... Karcher 1750 psi Electric Pressure Washer

Hunts on and off when trigger is not depressed, checked for leaks and screen, also discharge, still does it.


There could be a small bit of grit stopping the non return valve in the inlet pipe from sealing fully which would allow a pressure drop causing it to hunt. The valve may also be just plain faulty.and require replacement. ... Karcher 1750 psi Electric Pressure Washer

Karcher K 3.68M Electric Pressure Washer. Wand trigger Locks Up.


Sounds like the pressure valve is broken thats why you cant depress the trigger , the valve is on the pump , i would suggest taking it to a repair shop as they are fiddly things to fix ... Karcher PSI Electric Pressure Washer

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

Pressure washer start fine and idles appropriately trigger is depressed washer runs for about five minutes then just shuts off. Engine restarts fine but when trigger is depressed engine shuts off


Looks like the fuel cap may not be venting try it with the cap loose allowing air into the tank sounds like lack of fuel entering into the carburetor. ... Karcher 2500 PSI Pressure Washer

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.


Your unloader valve is sticking, take a look at the attached link for information on how to repair the problem. ... Karcher 2500 PSI 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

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


... Honda Karcher G2400HH-R Pressure Washer

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

Trigger gun for gas Karcher pressure washer is missing spring or whatever allows the trigger to work...can anyone help with parts advice?


... 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,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

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


... Pressure Washers

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


... Karcher PSI Electric Pressure Washer

Model Karcher 320H 1.141-205 When first switched on the pressure builds up and then the machine keeps no switching on and off, opening the trigger on the lance and it works ok, close trigger and the pulsing starts again, if left like this it would probably burn the motor out. I have lubricated the brass/plastic piston the operates the on/off switch but problem still exists. I have also opened the pump chamber but cannot see any debris or problems with the rubber seals. Any help would be most app


... Karcher 1550PSI Pressure Washer

My karcher KB 9030 is hunting with no demand - Karcher Pressure Washers


... Karcher Pressure Washers

I have Karcher 520m and when you press the trigger you can hear what sounds like a relay engaging but there is no water pressure, then it will fire up and work, but next time you press the trigger the same thing happens, I have been using it on harvested water, but even connected to the mains it does the same thing. Its now got to the stage it doesnt want to work at all.


The issue you are having is with the unloader valve in the pump. Now with the 520m it is a little bit harder to repair than with more gasoline powered pressure washers but it can still be done. It would be easier if I could just send you a email of t ... Karcher 1750 Psi Elec Pressure Washer

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 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

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
  • Start your question with What, Why, How, When, etc. and end with a "?"
  • Be clear and specific
  • Use proper spelling and grammar
all rights reserved to the respective owners || www.a-wash.org || Terms of Use || Contact || Privacy Policy
Load time: 0.0434 seconds