Next step is to take out the pin that holds the lever.
Foto 4 The reed contact assembly with a fallen out magnet
Foto 5 Gluing in the magnet
Be sure to insert the magnet with the largest side facing to you
Replacing the reed contact.
If the magnet is in place, but the lever switch does not react, the reed contact (the green glass tube) may be
damaged.
In that case remove the four screws of the small pcb of the reed contact.
Loosen the wires with a soldering iron from the main pcb
Replace the reed contact assembly with a new one.