How to thread a vintage Morse MZZ sewing machine tutorial

This video details how to thread a vintage Morse MZZ sewing machine, plus what all the buttons and dials are for. The one thing I forgot to mention is that the R button in the center of the stitch width dial on the main post or body is a Reverse button ~ push that in, and you will get a reverse stitch, which is used mainly for locking the stitch.