Hi waxdass. Please do not put brake cleaner on that engine. If you get it on plastic parts it may eat them, and some of those parts are quite difficult to replace.

Here are the Operating and Maintenance Instructions for the engine:
http://bsintek.basco.com/BriggsDocumentDisplay/flivAJX-nfBhU7y.pdf

Here is the Illustrated Parts List:
http://bsintek.basco.com/BriggsDocumentDisplay/Z6nkAJVJ1DajI.pdf

I suggest you begin by reading the operating instructions carefully, then ask any questions you may have. After that we can run through some simple checks you should always make when you acquire an engine, to ensure it is in good order and good tune.