How to replace the shaving heads on your Philips shaver S9000

This video shows you how to replace the shaving heads of your shaver S9000.
1. Turn off the shaver and release the shaving head holder.
2. Remove the retaining rings.
3. Remove the shaving heads from the holder.
4. Put the new shaving heads in the holder.
5. Put the retaining rings back on and fix them.
6. Inser the hinge into slot on top and close the shaving unit.