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Repair instructions for Karcher 620M on/off switch

I want to replace the on/off switch on Karcher 620M

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Posted on Jan 02, 2017

  • 62 Answers

SOURCE: karcher 620m runs but will not pump water

The pump that connects to the motor could be bad/and or loose

Posted on May 10, 2009

  • 1 Answer

SOURCE: what oil grade is correct for Karcher 620m pump?

I don't know either. Anyone got an answer?

Posted on Mar 06, 2011

SOURCE: I have a karcher 620m, power going to switch and

The little white thing is most likely a capacitor, and only AC current affects this it blocks DC. These don't often fail, and if but if suspect, then replacement is the only way to tell?
You need to check at the actual terminals on the Motor to see if the power is getting there, it should be present at one side of the motor, the "Hot"side, and the other side or "Cold"side will contact to the Neutral wire, to complete the circuit. It is a very basic circuit.
You also need to check the motor is OK, While motor is disconnected, use a meter set to OHMS, and measure across the the motor's terminals, you should get a lowish Ohmic reading, if it is Open circuit, high Megohms, then either the Motor has "Blown" or the embedded protection fuses inside the motor have, either way the effect is the same the motor must be replaced. This is often what it is.
Below is a exploded diagram manual that may help, it's not all in English, but gives one a good idea.
http://www.pressure-power-washer.com/pdf/karcher/5955-6440.pdf

Posted on Jul 06, 2011

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1 Answer

Karcher pressure washer 620m motor only runs with switch held down but will not water pressur is the same as tap pressure out the nozzle


it is not uncommon that the switch is bad? if the switch controls the pressure telling it their is water and to start working? then i would just replace the switch.

Dec 17, 2013 | Karcher Garden

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I have a karcher 620m, power going to switch and coming out of switch but motor wont run, there is a white cylinderical item beside the switch with 2 wires and power isn't getting to it have you any...


The little white thing is most likely a capacitor, and only AC current affects this it blocks DC. These don't often fail, and if but if suspect, then replacement is the only way to tell?
You need to check at the actual terminals on the Motor to see if the power is getting there, it should be present at one side of the motor, the "Hot"side, and the other side or "Cold"side will contact to the Neutral wire, to complete the circuit. It is a very basic circuit.
You also need to check the motor is OK, While motor is disconnected, use a meter set to OHMS, and measure across the the motor's terminals, you should get a lowish Ohmic reading, if it is Open circuit, high Megohms, then either the Motor has "Blown" or the embedded protection fuses inside the motor have, either way the effect is the same the motor must be replaced. This is often what it is.
Below is a exploded diagram manual that may help, it's not all in English, but gives one a good idea.
http://www.pressure-power-washer.com/pdf/karcher/5955-6440.pdf

Jul 06, 2011 | Karcher K2.26 Electric Power Washer

1 Answer

What oil grade is correct for Karcher 620m pump?


I don't know either. Anyone got an answer?

Jan 07, 2011 | Karcher Garden

1 Answer

Need manual for karcher 620m


Hi. Please click here to download the manual.

Let me know if you need further assistance. Thank you for using FixYa.

Jun 05, 2010 | Garden

2 Answers

Karcher 620m runs but will not pump water


The pump that connects to the motor could be bad/and or loose

May 10, 2009 | Karcher 2500 PSI Pressure Washer

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Karcher prssure washer motor will not start


try going to www.karcher.com
then click on europe
the international,
then service and will then see spare parts, enter k620
tick the button for you are a engineer and you are on your machine
download.
micro switch might be at fault.

Mar 25, 2009 | Karcher Garden

1 Answer

Karcher Pressure washer


Hi
don't know if this will help, but when I use mine, to start the pressure up I have to turn the nozzle to fine spray then turn it to the power spray and it works every time, shouldn't have to do this but I got it for nothing.

May 29, 2008 | Washing Machines

2 Answers

Karcher 620M not drawing water


my 620m has a problem when i press the switch on it has no pressure and the pump sounds like it is not kicking in .... plese help !!!
steve ..

Jan 08, 2008 | Washing Machines

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