On Sat, 13 Dec 2014 04:47:38 -0700, trader_4 wrote:

...snip...
I assume you tried moving it in both directions? If it's not just
rusted, but had something stuck in it, then it might only go in the
reverse direction. If that much force won't loosen it up, I'd say it's
shot. Unlikely even if you get it to move that it will free up enough
to work right or last much longer. If I were going to try something,
I guess some light oil poured in and allowed to sit for a couple days
might do something, but I tend to doubt you'll resurect it. Also, how
old is it? If it's 10+, that's more than you can expect. I see new
basic ones going in just 895 years.

yes, both directions. motor hums when switch is activated [very short
period of time]

it was made May 2008 and intalled in new home that we moved into circa
2011, so wasn't really used much. Then, we ran from time to time, once in
a while, but since we are on septic [expensive double tank septic!] we
don't like to put much down it and rely upon our trash service instead.
Then, went through a spate of not really using the sink, or exercising the
GD, so thus it seized up [I'm thinking]

895 years?! not bad.