While the Ricambi website (and a British counterpart) provides exploded parts diagrams and parts lists, I found over the weekend that I had downloaded a year or so ago the F40 Owner's Technical Manual (120pp) from www.ferrarichat.com. You need to register and the download is then free. Similar manuals are there for 288 GTO, F50, F60 etc.

The files are too big to upload here.