I picked this up last weekend and its very dirty and not in great condition, missing the bobbin cover.
I've wiped it over with a damp cloth, and left it to air as it doesn't smell great. It did seem to run the motor though, so we'll see.
I'm planning to leave them both until my dad's next here and get him to take a bit of a look and give me a verdict. See if he can get them running.