It uses a Smith 4MA10 motor, available at Grainger.
Be sure to install the dust cover. There have been some suggestions about drilling small holes in the dust cover to allow air to cool the motor. One guy said he left the wiring hole open to vent it. Nothing official, just comments "heard on the street".
The kids started to shiver, the wife started to clatter
Mine just chatters, like she is right now, because it's not 80 in the house.