This is a repair video of Karcher k5 premium full control plus. Its problem was that when you release the gun trigger it begins pulsating between on and off (start/stop) stages but no leakages of water was seen, only sound of water flowing inside the machine. First suspect was valves, after replacement it didn't help, further tear down identified an ripped o-ring.
Additionally you get to see almost complete assembly of the pump itself :)
Some time stamps:
13:20 - installing of replacement valves
19:10 - real defect
21:50 - complete assembly
Sorry for a long video my PC or video editing software is constantly crashing when I try to edit a few fast forward scenes..

If you would like to share some support for the channel or pour a beer as a thank you for successful repair: paypal.me/LetsFixItGarage