Kenwood Chef A901. Which capacitor do I need?

something went 'pop' recently and smoke came out. I stripped it down. On the underside of the motor is an adjustable plate that moves up and down as you turn the knob to regulate speed. On the underside of the plate are two rectangular yellow components one larger than the other. The larger one has broken, I think it is a capacitor. Parts lists show three that look similar to the one I want to replace but I can't identify the one that is broken. List offers three, 47NF, 100NF and 150NF and I cant see anything like those numbers on what's left of the case on my broken one. Can anybody help please as it just looks like a simple soldering job if I can get the right part.