Buy another Ocean Runner pump. I've had the same one with out one issue for years, it must be a fluke. I clean the venturi and cup weekly and clean the needle wheel every two-three months. Here's a link where you can buy the pump. Goggle it, you will be able to find others places too.
http://www.seaquestmarine.com/Ocean_Runner_Pumps_by_Aqua_Medic_s/126.htm
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