First of all, thank you very much Kelly for choosing FIXYA today for your online technical support needs.
Here is a direct link to the ONLINE USER'S MANUAL for that model:
http://dl.owneriq.net/b/b3c635f2-6141-4694-8ef1-b74cdc61b258.pdf
And here is a link to the SPARE PARTS LIST / EXPLODED VIEW SERVICE DIAGRAMS for that model:
http://www.pressure-power-washer.com/pdf/karcher/5970-5590.pdf
To view the Owner's Manual with Operating Instructions or the SERVICE DIAGRAMS just use your mouse to click on the link, which is the underlined and blue highlighted section of text just above.
This will open a new web browser page automatically for you and allow you to view the information at the website indicated and the contents of the Owner's Manual.
You may need ADOBE READER installed on your computer to read PDF documents, although many computers already have this type of utility pre-installed. You can download this free at WWW.ADOBE.COM if necessary. Click on the DOWNLOAD ADOBE READER button on right side of the ADOBE home page when you get there, then follow the onscreen instructions to install the software on your computer.
I truly hope that was helpful to you.
Good luck and take care.
Joe.
SOURCE: need help getting to an cleaning stuck unloader
The cart body makes this process a little confining but it can be carried out without removing the pump from the motor.
Diagram courtesy of: 
I have worked on my washer for the last 2-3 years to keep it going but I've opted to replace the pump this year. My replacement is an "AR RMV2G25D" (~$170) .
SOURCE: Unloader Valve - Karcher Pressure Washer
where is the unloader valve locaed on a Briggs Stratton pressure washer?
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Thank you for the links to the owners and parts manuals. I actually have both of those. Karcher makes what is known as a "service handbook" which i have found online for other units but i really need the one that is specific to the K3.96. If you have a link to that one it would be very much appreciated.
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