Morning, Dun. The size of the motor is pretty much your choice but one thing that is common among all electric motors used on woodworking tools is it must/should meet TEFC (Totally Enclosed, Fan Cooled) standards. I know you know this being the geek :D you are that they also make capacitor run motors as well as capacitor start motors. How many caps do you have on your motor? If two then your motor is a cap start and cap run. Change the cap for shifting the phase on the run side and you might not have to replace the motor. And I almost forgot, get a cap start replacement motor. Induction motors really don't have a lot of starting torque.
So what project are you working on? I am doing a remodel of a bathroom. The glass surround for the shower is being installed today. I am about to finish up with a cabinet I built. It has six doors on the front that are driving me nuts trying to get them aligned.