Here is the Illustrated Parts List for your engine:
http://bsintek.basco.com/BriggsDocumentDisplay/18mnuLXHnfBhU7y.pdfHere is the Operator's Manual:
http://bsintek.basco.com/BriggsDocumentDisplay/iorpzOJU0HvjhJvcv4.pdfYou didn't post the Code, so I can't tell you when or where your engine was made.
It sounds as if somebody had engaged in ham-handed amateur maintenance at some point, to damage the governor arm like that. The governor adjustment procedure I gave you is pretty standard for both Briggs' and Honda's small vertical mechanical governor engines. The pinch-bolt on the new governor arm should be tightened to just 1.25 lb.ft. (15 inch-pounds, or 2 Newton-meters), if you don't wish to get the same result as the ham-handed person did.
