172 / | HD | EARTH WORKING |
395 | DF | WITH GROUND SUPPORT VERTICALLY ADJUSTABLE RELATIVE TO FRAME {10} |
407 | DF | .~ Power operated adjustment {2} |
408 | DF | .~.~ Wheel actuates its crank axle mount {3} |
410 | .~.~.~ Intermittently rotatable member swingable with crank {1} | |
411 | DF | .~.~.~.~> "Constant height" depth adjustment |