del, I'll see if I can explain position control on the 3-point, using my tractors as examples (others are similar). My
B7100 did not have it. So the lever to raise or lower the 3-point hitch was centered. When you pushed it forward, the hitch lowered and continued downward until you moved the lever back to center no matter how far forward you had pushed the lever. And conversely, when you pulled back on the lever, the hitch rose and continued rising until you centered the lever again (although you could pull all the way back and turn the lever loose and when the hitch reached its maximum height, the lever would center itself). The only way you could raise or lower the hitch to a specific point or height was by watching the implement on the rear while you gently moved the lever forward or back, then move it back to center when the implement reached the level you wanted. (It did have a locking device (clamp) on a rod that you could loosen and move along the rod and re-tighten so with enough trial and error you could get it adjusted so the hitch only fell to a certain level before the lever re-centered itself, but I found that worthless).
Now the
B2710 has position control. Along side the lever are numbers from 1 (all the way down) to 8 (all the way up). When you pull the lever all the way back to 8, the lever stays there and the hitch rises all the way. If you push forward to 4, for instance, the hitch lowers about halfway and stays there, and the lever always stays wherever you placed it. So, when I pull my cultivator plow in the garden, I know that I want the depth to be about 5.5, and I can either visually move the lever to that position, pull all the way back at the end of the row to pick up the plow, turn, and go back to 5.5 to plow each row the same depth, or it has a clamp type arrangment with a knob that can be loosened with your fingers and moved to any position and re-tightened (which is what I do), so I can pull all the way back to raise the plow, turn, then push all the way forward, but with the clamp stopping the lever at 5.5 to drop the plow back to the same depth.
Clear as mud?/w3tcompact/icons/smile.gif
Bird