How do I adjust the height of cut on my Parkside Pbrm 53 A1 Petrol Lawnmower?

Adjust the height of cut by pushing the lever away from the gauge and lifting or lowering it to the desired setting, moving the lever forward for a lower cut (min. 25mm) and backward for a higher cut (max. 75mm). The adjustment must be done with the engine off and blade stopped.