My thinking is that this is old, dirty, potentially rusted and probably slightly warped. Do you have any assurance of the condition/information on the motor, the bearings, screws etc.
You'll want to realign all of the machine, replace the bearings, blade, possibly a new smaller more powerful motor, put on a good link belt, and generally clean it up. Consider the cost of parts, time and potentially machinist costs to replace broken parts unavailable from any other source.
I went to a garage sale here and a guy was selling an old version of a B&D router. I'd seen it on sale at Home Depot for $49.99. He wanted $75 for his. It was "antique."
This one isn't even antique. I'd leave it alone for even half that price.