SICE S 200 Manuel D'instructions page 132

Press the wheel rotation pedal to rotate the wheel clockwise and fully
demount the upper bead.
If the bead does not establish traction, use the provided tool (shown below).
Some of the most difficult tyres may not allow inserting the automatic bead lever
properly because the gap that can be created between the tyre and the rim edge is
not enough.
132 Manuale d'uso S 200