Don't waste your time on a new but way more inferior mower when you can repair your own.  Taken from working machine in good order with spring. no returns

The Genuine BOSCH Rotak 40ergoflex/43/43Li Height LINKAGE Part F016104303 is a used oem replacement part specifically designed for BOSCH Rotak 40ergoflex and 43/43Li models. This single part ensures that the height adjustment function of your garden power tool works smoothly and efficiently, allowing you to easily adjust the cutting height for optimal performance in your garden or patio. With the trusted BOSCH brand behind it, you can be confident in the quality and compatibility of this height linkage part for your gardening needs