Hi James and welcome. The manual won't help you learn to rout. It most goes over safety and and how to make an adjustment and maybe shows parts, which there may not be any of any more for that router. You're better off to get a book by someone like Patrick Spielman, Bill Hylton, or Pat Warner. There is nothing special about the wrench sizes, they'll be stock but you may need to get them in tappet style which are thinner than normal.
Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.