How to connect the telescopic jet pipe to my Karcher K7?

The following methods, according to Check Appliance, may help you address the problem:

1. Check that the cable is inserted into the power socket and that the power switch is switched on.
2. Check to see if connecting into a different power outlet makes a difference.
3. Check that your extension wire is no longer than 10 meters (30 feet).
4. Check to see whether the fuse or circuit breaker needs to be reset.

If these methods do not solve the problem, it is conceivable that the pressure switch is malfunctioning, causing the motor to draw too much current and blow the fuse. You should inspect the pressure switch for evidence of damage or dysfunction.

Sorry we have no part info here.

just send an email karcher thay shoud help

remove deterfent pipe,unscrew detergentnozzle carefully, inside is spring and ball bearing, clean and re-fit, replace if missing. spring on upstream (soap) side

DISCONNECT HYDRO OR WITH ENGINE NOT RUNNING DISCONNECT SPARK PLUG THEN RE-LEAVE WATER PRESSURE BEFORE SERVICING the detergent pipe plugs into a pipe on the pump, under which is a spring and ball bearing (stuck open, debris) WEAR YOUR SAFETY GLASSES

karcher k7 .85 wiring diagram

Twist the end of the nozzle or jet pipe until you get low pressure. This will **** the soap through

are you making the machine **** for water, if so you have got a air leak on the suction hose.
try force feeding with water by connecting your hose to the mains water hose and see if you can see a water leak.
could be starved of water also,chack the filter

Here is the offical link to manuals and warranty cards for the residential models of Karcher Pressure Washers
.
http://www.karcherresidential.com/us/Service/usermanuals.htm

you can sometimes seal the water leak from the inside as I think your water inlet case has split