Means for adjusting cutting height of a powered lawn mower

Abstract

The present disclosure relates to a lawn mower cutter unit () comprising a cutter propulsion unit () with a transmission axle () that is adapted to be rotated around a common rotation axis (Ax), a hub () that is rotatably connected to the transmission axle (), a cutting disc (), and a knob (). The knob is rotatably connected to the hub () such that the knob () is adapted to rotate with the hub () and the transmission axle (). The cutting disc () is displaceable along the common rotation axis (Ax), against a spring force of a spring element (). The cutting disc () and the knob () are comprised in a coupling interface () that is comprised in the lawn mower cutter unit () and adapted to transfer a rotational torque transferred from the hub () to the cutting disc (). The coupling interface () is adapted to releasably lock the cutting disc () in mutually separated positions along the common rotation axis (Ax) by means of the spring force, conferring an associated certain grass cutting height for each locked position.