We may have found other answers which could help you.
Click here for Motor Turning Humming
problem with karcher pressure washer?
detergent feeder not working?
my karcher is leaking at the gun?
my Karcher profi line HD650 doesnt start up withy battery what can i do?
karcher works, but pulsates on and off constantly ?
How can I fit the spring in my pressure switch control unit- Model 520M?