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Welcome. My name is ***** ***** would be glad to assist.
Please clarify the situation.
You have 4 wires from the switch leading to the motor?
The power was disconnected from the switch?
Not sure who or what wires may have been changed internally anbd need more details as to what took place.
It is odd to have a green wire on the switch, that is not normal for power.
Since the saw was originally 220 volts, you will need a multi meter to test continuity on the wires.
It may be that the entire saw was for 220 volt operation only and power on both legs went to the switch, so trying to connect the motor only to 120 volts, it doesnt exist on the power cord.
Was this originally set for 220 volts, power cord and motor?
What changes were made to the power cord?
I understand on the motor, they are fairly standard in dual voltages, but the table saws are rarely designed for both voltages.
Picture of the switch may help to determine why a green wire was used.
There should be some stamping on the switch also