1) make sure they have the keys. If not, bring a drill.
2) unlock the coin door, lift the latch to remove the lockdown bar. Remove the lockdown bar, remove the playfield glass, remove the ball.
3) lift the playfield. Remove anything loose in the bottom of the cabinet. Lower it, replace glass, replace lockdown bar and latch it.
4) unlock the back glass. Remove back glass. Disconnect all wires going from cab to back box, including the grounding strap. Unbolt and remove the head. Replace the back glass (optional).
5) remove legs.