The working depth is conveniently set on each coulter rail cylinder using an easily accessible lock pin system. Using the ratchet wrench provided, the working depth can be precisely adjusted over a 19-hole matrix. The adjustment range is 0 to 8 cm.
In addition to lifting and lowering the coulter rail, the coulter rail cylinders are also responsible for building up the coulter pressure. By twisting the coulter linkage, the equal-length coulter arms are pretensioned using maintenance-free rubber elements. Because the coulter pressure is linked to the fan, the pressure can adapted flexibly to uneven ground. If excess pressure builds up in the coulter rail cylinders, it is relieved through the fan return line, which is pressureless.