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October 11, 2019 at 8:46 am
#185003
Grease leaks out of the lower unit due to poor sealing. Grease attacks the rubber rotor, making it swell up. The rotor should be a snug fit on the brass eccentric on the inside, and there should be a space on one side of the outside. That space moves around from one side to the other as the shaft rotates. That is what makes it pump.