1. Disengage the eye of the visor from the holder.
2. Turn out two screws of fastening of an arm of a peak to a body...
3.... and remove the visor.
4. Pry with a screwdriver and open the cap of the holder fixing screw.
5. Turn out the screw of fastening of the holder...
6.... and remove the holder.
7. Install the visor and holder in the reverse order of removal.
8. Replace the second sun visor in the same way.