Tim, I have a CF741.? I assembled and mounted without instructions.? It is very similar to the one in Andy's referenced video. I could send pics if that would help.? The main tip is the left hand threads in the chuck.?
If you are interested, I have an extra new in the box transport unit that needs a home.? It is a pretty handy little cart that allows you to store the mortiser off the main machine and up against a wall somewhere.
Jonathan Smith