Honda F506 Manual De Explicaciones página 28

3.Tilling depth adjustment
Install the hitch attachment in the hitch box with a hitch pin.
The tilling depth adjustment can be made as follows:
Remove the pin and lock pin, loosen the bolts securing the drag bars
A and B, and slide the drag bars up or down as necessary.
HITCH PIN DRAG BAR A
LOCK PIN
BOLTS
HITCH BOX
PIN
DRAG BAR B
25