Question about Alfred Karcher K 5.93 M Electric Pressure Washer

Open Question

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?

Posted by Anonymous on

3 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

  • 187 Answers

SOURCE: Karcher K 3.68 M operation

These units have pressure valves that automatically turn off the pump once the pressure is high enough. The pressure switches do fail and sometimes stick and act as you've described.

Posted on May 07, 2009

  • 2 Answers

SOURCE: When I switch my karcher k4.97 washer on it just

you have an internal crack in the out let head of the machine very comon in thease machine and not expencive to fix

Posted on Jun 18, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Have a karcher k7.85 electric power washer .it won't turn on, or let water flow through gun nozzle. Checked fuse,and water pressure. Both fine.gave one attempt to start when I pressed trigger, then...


your going to have to email the company directly so that you might get it replaced if you have warranty on the product here is the email address and phone number enquiries@karcher.co.uk & 01295 752 000

Aug 14, 2014 | Garden

1 Answer

Hi, I have a Karcher K2.400 Electric High Pressure Washer. When I pull the handle nothing happens. When I plug the power in the pump does run a few seconds. I also checked the inline filter and that is all...


There is a pressure switch that turns off the pump when it gets to a certain pressure. It sounds like that switch is sticking. The contacts should be closed when you first turn on the pump. If you hold open the trigger when you first turn on the pump and the pump stays on then that pressure switch is most likely the problem. If you turn on the pump with the trigger open and the pump runs for a few seconds and then turns off check for a blocked nozzle.

Jul 28, 2014 | Karcher Electric Pressure Washer - 1600...

1 Answer

The trigger on the wand of my Karcher model K 368 M will not re-engage for several minutes after the trigger is released. If I repeatedly squeeze the trigger for a few minutes, eventually the switch will...


it sounds like a flow switch that is installed in the inlet of pump can get stuck at times if you have a soap nozzle select it usually more flow moves the flow switch try and clean the flow switch if possible.

Aug 10, 2013 | Karcher K3.68MR Electric Pressure Washer

3 Answers

Does not give a continous high pressure flow cuts in and out


that is sure signal of insufficient water supply!

try easy solution first:
make sure that your mains is fully open, that tap on whihc hose is hook up is fully open and hose is of "decent" diameter to allow sufficient flow.

if above solution do not work then you need to make another, more difficult arrangement:
prepare 20litres pressure tank with inlet connected to mains and outlet by short hose to power washer, fill it with water from mains, keep it under mains pressure and use karcher power washer normaly. this will solve water supply problem. twenty litres will last about 2min, because it is re-filled, under standard pressure therefore it will last about 3min...

third possibility is to stop washing...

if you find my advice helpfull, please do not hesitate to left the comment and vote for me, thanx!

Jul 31, 2010 | Karcher K2.26 Electric Power Washer

1 Answer

When pressure washer engine is running and hooked to water supply, there is no water spray with trigger is depressed


Hi Have you checked that your nozzle in the lance end is not blocked. Please try this and then try without the high pressure hose attached.

Oct 27, 2009 | Karcher 2500 PSI Pressure Washer

1 Answer

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

Jun 04, 2009 | Karcher PSI Electric Pressure Washer

1 Answer

No water coming through pump at all.


Is the tip/nozzle clean? try a different one. But you're probably right about the pump (I think they are all junk) unless you spend over a grand and get a "real" one

Apr 05, 2009 | Karcher 2500 PSI Pressure Washer

1 Answer

Karcher 2400 psi blaster When you release the trigger it will not pick up pressure when you use it again


To determine if your problem is due to an easily replaceable part, follow these steps:

1. Connect the water supply hose, the pressure hose, and the wand WITHOUT any nozzle tip.

2. Turn on the water supply, and press the trigger until water is smoothly running out of the nozzle
after any air is all purged out. Release the nozzle trigger.

3. Start the engine, and let it warm up for about 30 seconds.

4. With the engine running smoothly, press the nozzle trigger. The water should flow out of the nozzle (without the tip installed) at a faster rate, while the engine noticeably loads down as it used to do before your "no pressure" problem. If it does not load down, turn it OFF, and disconnect everything, and contact a Karcher repair facility.

5. If the engine does load down, release the trigger, and install one of the nozzle tips (not the black one).

6. Press the trigger, and the engine should load down, and you should have normal pressure from the wand. After you release the trigger and press it again, you will probably again have no pressure, and the engine will not load down. Removing the nozzle tip, pressing & releasing the trigger, and re-installing the tip should give you normal pressure again, but releasing the trigger will cause no pressure until you again remove the tip, press the trigger, and re-install the tip.

This is caused by a bad UNLOADER VALVE, which is located under a black cap with a metal button on it located on the top front of the pump. I don't know if you can purchase the replaceable parts from a Karcher repair shop, but when a neighbor & I took his washer to a repair place, it looked pretty simple to do this repair, and he was charged about $60 to replace a $5 (maybe) part, and it took about 5 minutes.

Sep 12, 2008 | Karcher 2500 PSI Pressure Washer

1 Answer

There is no pressure


To determine if your problem is due to an easily replaceable part, follow these steps:

1. Connect the water supply hose, the pressure hose, and the wand WITHOUT any nozzle tip.

2. Turn on the water supply, and press the trigger until water is smoothly running out of the nozzle
after any air is all purged out. Release the nozzle trigger.

3. Start the engine, and let it warm up for about 30 seconds.

4. With the engine running smoothly, press the nozzle trigger. The water should flow out of the nozzle (without the tip installed) at a faster rate, while the engine noticeably loads down as it used to do before your "no pressure" problem. If it does not load down, turn it OFF, and disconnect everything, and contact a Karcher repair facility.

5. If the engine does load down, release the trigger, and install one of the nozzle tips (not the black one).

6. Press the trigger, and the engine should load down, and you should have normal pressure from the wand. After you release the trigger and press it again, you will probably again have no pressure, and the engine will not load down. Removing the nozzle tip, pressing & releasing the trigger, and re-installing the tip should give you normal pressure again, but releasing the trigger will cause no pressure until you again remove the tip, press the trigger, and re-install the tip.

This is caused by a bad UNLOADER VALVE, which is located under a black cap with a metal button on it located on the top front of the pump. I don't know if you can purchase the replaceable parts from a Karcher repair shop, but when a neighbor & I took his washer to a repair place, it looked pretty simple to do this repair, and he was charged about $60 to replace about a $5 (maybe) part, and it took about 5 minutes.



Sep 11, 2008 | Karcher 2500 PSI Pressure Washer

Not finding what you are looking for?
Alfred Karcher K 5.93 M Electric Pressure Washer Logo

Related Topics:

28 people viewed this question

Ask a Question

Usually answered in minutes!

Top Alfred Garden Experts

Dennis Key
Dennis Key

Level 3 Expert

2475 Answers

john h

Level 3 Expert

11034 Answers

yadayada
yadayada

Level 3 Expert

75051 Answers

Are you an Alfred Garden Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...