Actually it was under a lean-to for the last 5 years after it got rolled out of the barn to make space for something else. It hasn't been run since 78. The inside of the tank is getting ready for a sealer and then I'll power it up.
I have just been taking stuff off, cleaning/polishing it and putting it back on. The electrics needed a little work but are functioning properly now.
Aside from finishing the tank and putting new rubber on the only major thing it needs are fork seals from what I can tell.