Ok one mystery solved. Realizing that somewhere along the way some one would ask me for a motor or gearbox part number, I went back under the bed this morning. Still believing that a square drive was needed, I took along my little pack of various screw bits. Sure enough a S-3 square bit fit perfectly and I was able to turn the motor by hand with ease.
Now the other mystery. Why are some units delivered with required tools and others not. Who's the weak link in this train?
At least I now know what I need and some way I'll get one.