Hi Jim, that engine has a displacement of 13 cubic inches (215 cc), is of the second design generation, has a horizontal crankshaft and a Pulsa-Jet carburetor, with a flange mounting for the driven device (a centrifugal fire pump is currently fitted to yours), ball main bearings, and a rewind starter. It was manufactured on 2 August 1982 in Briggs' Plant 7, which has been closed for some time so it is not on my list of plants and hence I can't tell you its location. Note that 1982 was the year Briggs converted from breaker points ignition to electronic ignition, and consequently your parts list shows both systems. You would have to pull off the engine's cooling air cowl to find out which system your engine has - if you post a picture of the ignition coil/ignition module we can tell you.
Here is the Illustrated Parts List for that engine:
http://bsintek.basco.com/BriggsDocumentDisplay/Z6mkyEVJ1DajI.pdfBriggs does not list an Operator's Manual for that engine.
All of the Briggs side valve engines should be run on SAE30 automotive-rated engine oil, not multigrade. Multigrade will lubricate the engine, but will be consumed much faster.
