Yep. Take off back door, unplug connectors, remove bolts.

Yes - you are correct. Remove the Jones plugs first, then the four bolts. Push the wires into the body of the machine. Its best to use two people to carry the head.

There was some good info in this thread too
https://pinside.com/pinball/forum/topic/any-instructions-on-putting-an-em-pinball-together-after-buying

Nothing to worry about drilling out the lock. Dolly is fine for moving the Head.

Probably going to depend on what you're comfortable with. I always leave them in, reasoning that the head is a more sturdy holder than any way I can hold it, but I know many who take them out and wrap them in blankets or something.

I now only transport the heads in the upright position. I once laid one on it's back and the vibration rubbed paint off the BG where it contacted the backboard.

What game was this? Usually it looks to me like the backglass shouldn't be touching the backboard, there should be a gap between them.

I honestly don't remember which game (it was probably 15 years ago). The problem is that parts loosen over time and shift around allowing contact. There's a reason that they put the protector pads on the backboard. Unfortunately, the pads degrade over time and can cause damage themselves. You could probably transport them this way if you carefully wedged some cardboard to keep the BG from shifting/vibrating, I just prefer to transport them upright.

Yeah, definitely better not to risk it, I agree. I always try to store and transport upright. Just surprised to hear about that

Transport Head upright, Backglass in Head.

9/16 socket or wrench
5/8 socket or wrench
drill with 1/4" bit or lockpick set (just in case)
good flashlight
a couple screwdrivers, flat blade and phillips, probably not needed but doesn't hurt

You didn't tell us where you're located, but be aware temperature extremes can cause the backglass to flake. Minimize temperature swings - don't take the head from a 70 degree room and put it outside in 20 degrees for awhile.

Very true, and although 70s Bally glasses hold up well, wrapping a blanket around the head will
allow it to slowly adapt to temperature changes. It beats driving home with the heat off, which
I also have done..

You should be fine - and like Mopar said, if you wrap a blanket around it, temp swing will be minimized, plus it will act like packing material to protect it. BTW I have a Knockout if you have any questions, or just start a new thread. Good Luck

Bring a 1" drywall screw to hold the back door to the head if it turns out you need to drill the lock. Or another lock with key.

Not much to look for, just plug it in and as long as nothing locks on you're safe to start fixing things. If it does lock on, turn it off and disconnect that coil, etc. They're much 'tougher' than SS games so you don't need to be as careful with an unknown machine

Half the time, or more, a screwdriver works on backbox locks. Try before drilling.

Do a search for starting an EM pin. There's been lots of discussion about what to do about a machine that you're not sure is working. Your machine looks pretty good - wipe everything down, install a new ball, and read about EMs. If you don't have that much patience to read, plug her in, and listen. If you hear lots of buzzing, something is stuck on. Track it down, and power off quickly.

If the game tries to start, but the motor keeps running, look at your score reels. Are they all at zero? If not, the ones not at zero need rebuilt.

These EMs are lots of fun - report back what you find.

Chock full of good info: http://www.pinrepair.com/em/index1.htm#started

Can't hurt. Bally plugs aren't very good

Until you get a lot more experience, don't clean or adjust anything that doesn't need it.

I would check that all the fuses are the correct rating before turning it on (and that there aren't any "creative" fuses likes screws or nails).

And the first thing I would tackle is replacing the crappy Bally fuse holders (if present). http://www.pinrepair.com/em/index2.htm#fuses

NEVER remove the backglass for relocation.
Keep the backglass in the backbox.
Anyone that may recommend this action has not moved hundreds of games in their lifetime and suffered consequences of stupidity.
This is a common mistake by new owners which results from breakage either during transport or removal itself.
Sad face when they realize they cannot find a replacement.

Cover the backglass with a piece of 1/4" oversized plywood and use a cross strap.
Minimum is a double thick piece of packaging cardboard in the pinch.
Tape is not recommended due to potential loss of paint on the backbox.
Then move the backbox separately in the case of EMs.

Prior to starting repairs, have a FULL paper schematic on hand (not some BS IPAD pdf version) and understand the fundamentals of circuit theory, components, and EM pinball operation. More games have been $#%ED up by making unneeded adjustments than leaving things alone. Use the RIGHT tools. Learn what should and should not be cleaned.

You can reference my Dixieland - A Restoration Journey thread for more tips.