Karcher k3-91m electrical box

SOURCE: 50cc Two Stroke Scooter Engine - Poor Idle

I had the same problem- from out of nowhere the scooter started dying at every stop. I adjusted the idle screw to 2000 and it still idled up and down. I bought some injector cleaner but this will take a while to work (several tanks of gas) and then found this link- seems to be a very simple thing to do once you read this link. I hope it helps. --

SOURCE: Karcher B402 pressure washer Motor runs as soon

bob I had this happen to my Karcher, the pressure seals have blown. $Au200 for service and replacement from karcher dealer. tyhey would not sell the parts for a DFY

SOURCE: 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.

SOURCE: The motor keeps surging

If there's a lot of sediment in your water supply, there's a chance that sediment has gummed up the pressure switches. I'm assuming it has a full power switch and high power switch. It runs on full power until a pressure switch is satisfied, and runs on low power to slowly build the pressure back up, at which a second switch is satisfied from the pressure and turns the motor off. These things are not easy to work on, and are made of metal probably too fragile to try any chemicals. You should probably contact the manufacturer.

Testimonial: "Thankyou, great help!"

SOURCE: Karcher K2.36 motor cut out and won't restart

Yes, the water should be turned on first but if it only ran for a minute or two it should be OK. Most late model pressure washers have an automatic shutoff when the trigger on the wand is released. Turn on the water and then the machine and then squeeze the trigger on the handle of the wand and the motor should start as soon as the air is cleared from the line by the flowing water (about 10 seconds). If the unit was put away wet last season you may need to clean the nozzle with a piece of wire too.

Testimonial: "Thanks brobin, your advice was spot on and it is now working again, much appreciated"