http://www.pondliner.com/PM36.htm

It says excludes impeller, but the part that is really broken is the
inside where the impeller spins, that you can't replace...

Michael Shaffer wrote:
Today I took my Mag-Drive #36 out of the pump well and tried to clean
the impeller housing. The whole impeller and "pump hole" (the part of
the pump where the impeller spins) is torn up. I guess this is from mud
that got through my strainer basket. Will this be covered under
warranty? Also, the front of the impeller housing broke off when I was
trying to get it to start.

Thanks
Mike