Old TroyBilt can be worn out and rebuilt for decades. Hand tools are all you need. It doesn't do as much as fast a newer designs. Harbor Freight will sell you a Predator Honda knock off engine to bolt on when the time comes.
I don't know Dr, but if you can find a used BCS or Grillo for the same money, don't hesitate. Also easy to live with and will be around a long time. Does more than TroyBilt in less time even though it is narrower. And being able to pick it up is much easier cthan needing ramps or jacks. Earthtools.com
