I installed my Jabsco pumps last season. the same one (center) has stripped out the female, D-shaped portion that fits over the pump's shaft.
this has happened twice now on the same pump. any idea of what could be the cause?
in my current configuration, the center pump is the only one flipped so that the impeller is below the motor.
thoughts? btw, this has happened with both yellow and green impellers.
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