If you post the Model, Type and Code numbers stamped on the engine's cowl, we should be able to give you a link to download the operator's manual and illustrated parts list. If you want to overhaul the engine, it would be better to download the B&S Service and Repair Instructions 1984, from the Manuals section.
Whatever you find, Karl, we are here to help. Old side-valve Briggs engines are rather straightforward to work on, but I recommend that when in doubt, just ask rather than guess.