Hi My karcher k3.65 jubilee is leaking water when the pump is switched off from underneath

It sounds like there may be a potential issue with the pressure build-up mechanism in your Karcher K2 compact. The constant motor running without water pressure could indicate a problem with the pump or the pressure switch. I would recommend checking the following:

1. Check the inlet filter: Ensure that the inlet filter is clean and free from any debris or blockages. A clogged filter can restrict water flow and affect pressure.

2. Inspect the nozzle: Make sure the nozzle is not obstructed or damaged. A blocked or damaged nozzle can restrict water flow and affect pressure as well.

3. Check the pressure switch: The pressure switch is responsible for regulating the motor and water flow. It's possible that the switch is faulty or not functioning correctly. Consider contacting Karcher customer support or a professional technician for assistance with checking and possibly replacing the pressure switch.

4. Examine the pump: There might be an issue with the pump itself. It could be worn out, clogged, or experiencing other internal problems. In such cases, it's best to reach out to Karcher customer support or a professional technician for further diagnosis and repair.

Remember to always follow safety precautions and consult the user manual provided by Karcher for specific troubleshooting steps and guidelines.

If wand is on and trigger is off, the pump has self destructed or part of it may have come loose and the water is leaking out.

You need to make sure you have water flowing through the machine before you turn it on. The pump could be bad in it and or the seal make have broken which is causing the Ayer o leak out.

If you mean removing the yellow cover then you will need long handled torque screw drivers, these are located at the back of the machine if memory serves me correct, or some models you need to remove the wheels first o get at the starting screws.

I have the same Problem, the leak is from the seam of the Manifold housing. There is a small crack in the seam. A manufacturing defect.. A New Manifold Complete Replacement is about $61.03, about the half the price what I paid for this pressure washer at Walmart... :( If under 1 year old, and you can find a receipt to prove it,Karcher will replace the whole Pressure washer under warranty.

The most likely issue, which seems to occur alot with karcher, is a cracked water pump. What happens is that as you release the trigger on the handle, the rise in pressure should cut off the motor, but as it also cuts off the water flow at the wand end and the motor spins a few more revs until it stops, then there is a huge pressure glitch which blows apart the weak plastic pumps that they use. Since the plastic cracks it is very difficult to repair and the only option is to go and buy another. BUT...this time tape up the trigger on the handle so it is always on and then it won't blow itself up. Just use the unit on/off switch to turn the motor on and off.

hi here is the link for manual
http://www.karcher.com/int/Service/usermanuals.htm?translationmode=&ACTION=SELECTTEILENR&ID=16017510&SELECT=Select+Product

Sounds like the water seals are bad. For Karcher parts go here: LINK

hi, it sounds like the seals in the pump have gone,
you can repair this your self with some seals, www.karcher.com then click on europe,then international the screen will change.
go to services the spare parts, in put your model.
it will help if you can also find the 8 digit number starting with a 1.something something something dash something something something dot nort.
or ring me on 01729825656

what you need to do is, take the screw fitting which goes to the water tank off, then the one that goes from the water tank to the pump head .
then put the one that was in the first place going to the water tank on to the pump and force feed with water.
see if you can see water leaking from any where seals hose.
try running the machine to check the pressure.
if water leaking from pump head you need seals.