I'm new to this forum. I recently inherited a pressure washer that doesn't work.

The engine is a 5 HP Tecumseh, Enduro, horizontal drive and seems to work fine. I have taken the pump completely apart and found 2 bad bearings. It's a Giant HR20, 2 gpm, 2000 psi pump. I'm having trouble removing the last race of the rear bearing. Before I purchase approximately $150 worth of repair parts including a new hose and gun assembly, I'd like to know what's involved with the bearing replacement. Am I going to have to heat the housing to get this bearing out?
I am pretty mechanically inclined, but I haven't done much with bearings. I may not have the required tools for this.
Any help would be appreciated. Any suggestions where I could get a repair manual?
Thanks!
Ron
January 28.... I got the bearing race out. Now to order the parts!