When working without any height adjustments,your height is 5 mm (3/8 ins.)To adjust the height please loosen the four screws (A) with the hexdriver (B)Set the height at the scales (C) for the required cut.Then tighten all of the four screws.1.2.3.Before adjusting jobs always pull-out the mains plug!Adjusting the Height4.3Operation4DoorDoorDoorDoor TrimmerTrimmerTrimmerTrimmerU S E R S M A N U A L6666