Karcher parts diagram - Karcher K5.540 2,000 PSI 1.4 GPM Electric Pressure Washer

Karcher 2 26M Parts List and Diagram 16016020 eReplacementParts com

There are videos on the site that show how to troubleshoot this. The issue is most likely a valve that is sticking open sometimes.

Go on the Karcher website or that of a main dealer and find your exploded views. You haven't given the model etc so I can't help you further but there's plenty of info online.

do you want a "how to use the machine" or "parts diagrams" or "how to repair" ?

"how to use" is the same for all pressure washers...........

i guess you own a KB 302 1.994-923.0 but karcher dont list this "operators manual"

this is for the k 370 :
http://www.sparesgiant.com/media/import/karcher/k370%20op%20man.pdf

If you have a Karcher then you should always post your machines barcode.
The karcher barcode is on a silver sticker and is usually 15 digits long. Example 156987400000123 is actually model 1.569-874.0 and serial number 00123....

http://www.rjbowers.com/parts_manuals/k5_1302876307.pdf

I find this link and gives a good breakdown of Karcher PW in ALL PARTS. It does not have K 2400, but try this link for K240. You can tell whether it covers your machine or not.

http://www.pressureparts.com/TreeView.aspx?node=71067&node1=72670&node2=76096&anchor=76096#76096

Karcher doesn't publish a parts manual, but there are numerous sites like this one that offer diagrams and allow you to order from a picture.

If you have used an extension cord with it you have destroyed the motor. If not, the bypass valve is stuck. On THIS diagram, section 2.1, part number 1 needs lubrication with a good waterproof grease.