Originally Posted by Kipper Ahh just noticed there's nothing connected to U1.......Whose the NumbNut now 
On the bottom left of your motor plate do you see the µƒ ? |
That diagram doesn't show the motor windings which are connected to the various points on the 6 terminals but you knew that, right?
The motor plate states that the capacitor is 25uF / 450V.
Anyway, it's time to get the capacitor out of the motor and hooked up to a multimeter in capacitance measuring mode. Oh yes. They always talk in the end...