While you wait for answers, we may have found some information which could help you.
Click here for Karcher Washer Switchedkarcher works, but pulsates on and off constantly ?
Karcher pressure washer makes a loud noise?
Why does my Karcher K2.94 pressure washer only starts when cold?
problem with karcher pressure washer?
Karcher 620M PW not staying on when switch released?
karcher 211 +?