A:AnswerHello! Here are the steps on how to replace the blades of the Philips Norelco Shaver series 7000 Wet & Dry electric shaver S7887/82. 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 counterclockwise 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. 6. Place the retaining rings back onto the shaving heads and turn them clockwise to reattach the retaining rings. - Each retaining ring has two recesses that fit exactly into the projections of the shaving head holder. Turn the ring clockwise until your hear a click to indicate that the ring is fixed. Note: Hold the shaving head holder in your hand when you reinsert the shaving heads and reattach the retaining rings. Do not place the shaving head holder on a surface, as this may cause damage to the shaving heads. 7. Insert the hinge of the shaving head holder into the slot in the top of the shaving unit and close the shaving unit.
