Appears to be a shorted starting capacitor. Not familiar with that specific motor or pump but in general there are two windings, running and starting. The starting winding is usually in series with a capacitor and a centrifugal switch that kicks out this winding when the thing starts spinning. The starting winding pulls a high current and if it doesn't kick out then the internal thermal breaker will trip. That capacitor is pretty cheap to replace, maybe $20 tops at an electrical supply place. It is sometimes located under a cover on the side of the motor, sometimes behind the cover where the wires enter, and sometimes buried. Anyhow, that is the part to look for.
Hope this helps.
Al