I’ve only had the FEL off a couple of times and that was many years ago. I don’t remember but the bucket is either supposed to be flat on the ground or completely upside down. I think flat is correct.
In any case, you leave the hydraulics connected and use the FEL to help get it released from the mount. You unpin the cross bar at the battery box and pull the pins at the main brackets after you set it down on stands. Using the hydraulics gets a bit awkward as the movements are reversed. Also it has to be finessed into place and the OEM control is lacking in that regard.
Once it is free of the brackets you can shut down and pull the quick couplings apart.
Getting it off is easier than getting it on, but it is just the reverse order of operations.
On a side note, the last time I work ed on the clutch, I didn’t want to mess with the FEL so I rigged up some blocks and jacks to take the weight of the left side and simply removed the mounting bracket for access. That too was awkward, but it was much less work in the end.
Clutch work on these things is kind of like doing taxes. A royal PITA, and easily put off until it MUST be done. 🙁