If you go by the original instructions that come with the machines, for assembly you are supposed to stand the machine on it's back and bolt on the front legs, then lower the front down and with an assistant lift the back to bolt on the rear legs, then fit the headbox.

A reverse of that will enable you to move the machine around with a sack truck.

1. Remove the balls.
2. Place a piece of cardboard over the playfield glass.
3. Remove the headbox bolts and lay the headbox on the cardboard.
4. Strap the headbox to the main cabinet.
5. Remove the rear legs
6. Stand the machine on it's back and remove the front legs.

You can now move it around very easy with a sack truck.

If you want to lay it down in a trailer you can lower the sack truck onto it's handle then with assistance lift the machine straight up onto the trailer.