To add to what others have said, the most likely place for you to do damage to that machine when moving it is at the corners of the bottom of the machine. If you are moving it into a van or any vehicle with even a slightly uneven floor, you life will be 500 times easier with some cheap rollers. This will prevent the bottom of the machine from rubbing against the floor and getting caught on something like a seat attachment and taking a chunk out. I would recommend going to home depot, spending $4 on a 2" PVC pipe and having them cut into 3 pieces of roughly 40" each. When loading into the back of a vehicle like a van, put the machine on the rollers when sliding back then remove the rollers before driving.
Here are the steps I use:
-Use a dolly with big inflatable wheels if you have to move through grass... a refrigerator dolly will sink
-Remove balls, tilt bob, coin box, and other loose items inside machine before moving.
-Fold down top box, and strap to cabinet leaving cardboard or blankets in sensitive areas.
-Pick up rear of machine and slide a bar stool under the rear of machine
-Remove rear legs and LABEL for next owner.
-Gently set rear of machine on ground.
-Tip machine onto it's bottom.
-Slide dolly under bottom of pinball machine, with handle between legs.
-Strap pinball machine to dolly (with lots of padding)
-You can now hold the machine by the dolly or by the legs when moving.
-If you need to rest you can rest the machine on it's front legs/dolly wheels while moving.
-Wheel machine to vehicle.
-Rest machine on dolly wheels/front legs.
-Remove straps keeping machine on dolly
-Lift rear of machine into rear of vehicle (with padding).
-Push machine into vehicle until you can let go.
-Remove front legs.
-Label front legs.
-Secure pinball machine.
-Do steps in reverse at final destination.
I got stuck in the mud a while back but this picture should give you a good idea on how to move a heavy pin. You do not want to just pick up a Hobbit like it's a coffin.disaster (resized).jpg