Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

I'd say if the engine looks "okay" in the photos, not overly bent / missing bits / cracked - it should run if the heater is operational.  The heater, like the smaller steam engines, you can re-make it (just hope no one has opened it up and lost the bits).  It would really have to had been dropped / miss handled badly to kill it, it is a very stout toy.

@Junkologist made a heater for one, here is that thread.
https://www.officeofsteamforum.com/general-discussion/empire-hot-air-engine/