We may have found other answers which could help you.
Click here for Detergent Not Working
How can I fit the spring in my pressure switch control unit- Model 520M?
karcher 211 +?
my Karcher profi line HD650 doesnt start up withy battery what can i do?
Why does my Karcher K2.94 pressure washer only starts when cold?
Karcher 620M PW not staying on when switch released?
detergent feeder not working?