Hayward Power-Flo LX Model # SP151Z1BC
Started out the year and would only hum. Was able to turn shaft with pliers and get it to start up. Now, it will not start up at all, only hums.
Shaft turns easily. Motor shaft is NOT bound.
Hubby took back off dry end and had a look. Springs on switch are not sprung on switch, so he doesn't think it's stuck open. He has minor knowledge on motors--I have none.
Nothing looks terribly corroded.
Can someone advise us where to start? We can't find a diagram of the dry side of the motor.