This is my delemna, I am not knowledgeable when it comes to electrical issues. I purchased a vintage Craftsman 6" jointer for a very good price. The gentleman that sold it (it was his father's) said the motor had not been run in many years and there was no outlet to test it.

So now I have this jointer with a Dayton Motor which he claims runs on a 220v outlet. The label on the motor says 230/115v. The plug coming from the motor to the jointer is a 2 pronged plug. The plug from the Jointer to the outlet is a special plug that twists in to prevent loosening. How can I test this motor without spending money to install a 220v outlet in my garage. Or even determine that it's 220 not 110?

Please resize your photos as they were far to large.

Try these

Looks like a NEMA l5 120 VAC twistlock that has been connected to a very old non polarized cordset. It could be a 240 VAC but the female end is not designed for 240. Check continuity through the cordset, there is obviously one conductor missing.

The goal would be to replace that Twist lock with a three pronged plug.

Look at the plate on the motor. It is old "Chicago 12"! It should tell you how to wire for different voltages. When set for 120 VAC, just wire through the switch box in the picture and forget the female end.