Our pool motor is making some loud noise, and has issues at start up. when the timer turns it on, the motor will come on, make a wierd noise, then shut down. a little while later it will attempt to come on again and after a couple attempts it does work but it is rather loud. Basically my question is this, is it hard to replace the motor. We were told by a pool company that it is the motor. I can buy a replacement on line at a good price but not sure how difficult it is to replace. Any help on the subject would be appreciated. By the way, it is a 1.5HP motor, switchless motor.