Sorry, forgot to upload the sketch
Let me take another look at the Century diagram your wife sent, I might have missed something
Question: Are you getting a hum from the motor or nothing at all? Hopefully not sparks and flames
First test:
1) Disconnect drum switch 3 and 4. Put the red and black "rotation leads" back on to the motor 2 and 4 terminals. Keep the drum switch 1,2, 5 and 6 connected. Motor should run in one direction when switch is thrown forward or reverse.
I'm suspecting your drum switch might be at fault