Smitty, the best thing is to order the Workshop Manualand the Illustrated Parts List from a Kubota dealer. I got mine for my B2710 from Carver Equipment, who advertises on this forum. They're expensive, but good.
I ordered mine along with my tractor from my dealer. Cost a little over $80 last year and covers all the L30 series. I have always bought the service manuals with all major equipment and vehicles. It has proven time and again to be a good plan since I have always done all of my own maintenance. The parts list you can get off the web.
Vernon, I haven't looked at a parts list on the web, but when I bought my manuals, I found that Illustrated Parts List to be a great help because it's like an exploded view of everything showing how they go together. Is that the way it's shown on the web?