C/H 1750 Washer will not start with water connected. Electric motor will start without water connected.

leak in the gun and worst thing is in the motor check also in the connection point for O ring.

Replace the wand (Gun) The valve is not repairable.

Inside machine are safety switches, you probably have a stuck on. Take apart, plug in and test with a tester to see where power is not getting to. I am guessing a safety switch is stuck.

thats normal, it is reducing the built up pressure that is not needed until the trigger is pulled.

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

seals may be bad

hi there,
this means no water pressure coming
to pressure tank it was consumed when use for cleaning, the water pump does not work,check water pump if function,if there over load reset,or had to jumper the connection of pressure switch.
jump the connection of pressure switch,by passing pressure switch if the motor run just jug for 3 seconds,if run you have defefctive pressure switch,replace pressure switch.have a nice day and rate me if your satisfied to my solution,thank's

Go to this web site for a PDF owners manual for your pressure washer.


http://www.karcherresidential.com/support/downloads/pdfs/usermanuals/5962-0870.pdf

try running the machine without the hose attached if the machine runs ok then it is probable the there is a blockage in the nozzle if the the machine still cuts out then the pressure switch will probably be stuck or faulty this switch will be inline with the on/off switch and the motor it can be checked using a multi meter after dissconecting the power.