I noticed yesterday that the pump was no longer pumping water. I opened the basket lid, and found the end-cap to the impeller laying in the pipe. I took the removed the motor from the basket-housing area and removed the top to find the broken impeller. The motor seems to be fine. I assume it should be possible to simply replace the impeller, but I'm kind of confused as to how it is connected to the shaft. Anyways, here's a couple pics. I didn't spend too much time looking at it - just kind of glanced and figured I'd rather do something else for the time being. Thanks.
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Here's the other pic https://www.dropbox.com/s/0qk4h7prkz0qcwb/2014-05-15%2018.45.21.jpg