Capacitor for Electric Pump Motor

[FLS]

There is a centrifugal switch in the motor that switches from the start winding to the run winding once the motor is up to speed anytime the motor starts. Most likely this switch is going bad. Usually if the caps are bad the motor won’t run, it will just make an humming sound and will trip the motors thermal overloads or circuit breaker. You can take it to a motor shop to be repaired, or just replace the motor. It’s an easy fix, you’ll need a new shaft seal.
Shallow well pumps (above ground) don’t have a starter box until you get above 2hp, they you’ll have a contactor / OL combo . Starter boxes are for submersibles and being phased out. Everything is inside the motor now.