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#3
06-15-2013, 04:55 PM
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Take the pump apart and check for debris or build up. The chatter could be from the bushings being worn and the impeller bouncing around until the pump gets up to full speed. Every few months place the pump in a pail with a 50/50 mix of water and vinegar and let it run a few hours.
Keep a spare impeller for back up. 
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