That sounds a little bit like my latest project.
I was originally just cleaning it up for someone else. But, when they heard what a mess it was inside, (no ammo though) they said they didn't even want it back. I could keep it, or toss it, at my discretion.
Because I'm me, I'm going to try to fix it up. But, it may not work out.
So far, I've replaced the Helping Hand, the cord, and I have a fan housing coming.
It still needs a new felt seal, and maybe a brushroll.
After all that, even though it runs, I might want to replace the motor, and there's still a matter of the headlights not working. I still haven't determined what's going on with that.
I know. It's not worth it. But, for whatever reason, it's worth it to me.
This is way more effort than I've ever put into one of these before. Generally, all I do is a good cleaning.
So, if nothing else, this will serve as a learning experience.
Worst case scenario; if I can't figure it out, I'll put it all in a box, bring it to the only vacuum shop in the area, and pay him to put it back together.