If you check inside the motor, you will probably find the centrifical switch
is used up and not making good contact when the motor stops.
Steve

"JimInsolo" wrote in message
link.net...
I have a 1 HP induction motor with capacitor start and capacitor run. As I
understand the function, the start capacitor circuit is engaged at start
up
and then dis-engages when the motor reaches full speed. The motor works
fine most of the time, but every so often it will make a terrible sort of
vibrating racket and blow the breaker. Sometimes if I just wait a minute
or
so it will start and run fine again. Any ideas on what could cause this?