I was looking for info on my injection pump and found this site. There are some great things to see and also a lot or great information on here.
Look at the links on the Magnetos for breakdown and parts lists for those of us without the paper books. Then go on down a little further and click on Machinery Tables. It has lists of everything from how to figure the change gears on a lathe to cut threads, to the specs on quite a few different thread types.
Like I said before, all in all it looks like a good site with a lot of great info for those of us that sometimes have the need to know.