Disc like that have a slide. They can slide the two rows straight so that they are not cutting. They have Transport position and a field position. Closer looking at it I'm not sure. Some of the ones I have used work like I described.
He's pulling a snap coupler disc with a clevis through the eye that hooks into the bell under the belly of the tractor. It's a fully mounted disc when hooked up correctly and the gangs aren't adjustable.
There called training seats or something like that you get another person to sit up there and learn to drive.since only big companies could afford these things they wanted training seats to make Shure whoever drove it knew how. On smaller tractors it was an option too but since they weren't as hard to operate they didn't need to do as extensive of training.
