a few 13 foot scaffie planks layed on the deck 4 scaffie rollers and a couple of planks under the machine and rollers placed in between and a good crowbar to shove it
that's how I'd go, walk like an egyptian comes to mind
, spread the load on some boards, and use some scaff tubes as rollers, worked for centuries... small chain block to pull it up the wee incline, take it easy, and slow, she'll be right. Looks easier than mine, I had to take two right 90° turns, and go down a few steps to get it into place. Few mates, some beer, scaff tubes and a wee chain block is all it took... Sometimes we can over think these things...
the OP looks to have a good workshop space but rubbish access, such is life!
i pull a big diesel whacker plate in to my trailer on my own with just a few planks and rollers. 4 people couldnt lift it. its that heavy