Hi Watts93KG,
You will want to open the end cover of the motor where you wire the motor, once that cover is removed you can see the end of the motor shaft you will then be able to take a wrench to secure the shaft of the motor, then go to the other end of the pump to unscrew the impeller. Below is a video we put together showing how to remove a pool pump impeller. Disregard the cheesy voice-over =)
