Short work day because morning shenanigans in town, but then I retrieved the rotavator from the tractor barn. Fixed a few small problems and greased all the things, as it was nicely painted but not a drop of grease anywhere.
Some studying of Japanese manuals (translated) and wrestling the thing on and off the 3PH twice and then... magic!
Turning the concrete field into fluffy garden soil. At sunset, sadly, so just a quick test run.
My notes for setting the rotavator up, so I don't have to struggle through the Japanese manual every time.
The auto-tilt is so cool. There's a sensor somewhere and a tilt piston on the right 3PH arm. So when the tractor falls with one wheel into a ditch, the piston keeps the rotavator level, resulting in perfectly straight fields from uneven ground. In 1984 this must've been revolutionary.
Still haven't figured out what the feedback lever is for