Philips S9000 Serie Manuel D'instructions page 31

How do I replace the shaving heads?
Replacing the shaving heads
For maximum shaving performance, replace the shaving
heads once a year. Replace damaged shaving heads
immediately.
1 Switch off the shaver.
2 Press the release button on the shaving unit and pull
the shaving head holder off the shaving unit.
3 Turn the retaining rings anticlockwise and remove
them. Place them aside in a safe place.
4 Remove the shaving heads from the shaving head
holder.
Discard the used shaving heads immediately to avoid
mixing them with the new shaving heads.
5 Place new shaving heads in the holder.
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