1984 Evinrude 4hp carburetor.....how it works, how to restore

Evinrude used a nifty carburetor for their 4 hp outboard, but their user manual is a bit sketchy on how it is supposed to work. There is a scarce amount of information online about these old carburetors. This is video diary of how to strip and clean it, along with a description of the various air and fuel passages.