I didn't see a specific listing for your pump.
Maybe one of these links will help?
Your probably dealing with a rusted crankshaft in the pto side of the engine.
So getting some penetrating oil on things, would be something I'd want to happen, before doing any pulling, prying or pushing.
I would look to see if there are any, threaded, push bolt holes
in the pump body to help with the removal (mentioned in the PDF).
http://www.pwoutlet.com/Pressure-Washer-Pump-Removal-Installation-Instructions-s/98.htm
http://www.etscompany.com/Direct_Drive_Pump_Removal.pdf
Heck, Youtube might have a video, as you may have already found out...
Just finding it is the problem! Always fun with guessing how the name or words were misspelled, to search for it.