Inserting and removing a new cover lens :
To change the outer cover protection (6) lens the filter must be removed by unscrewing the two retaining screws (9) from the inside of the helmet flip (2). The old protection lens can then be removed and the new lens inserted followed by the light seal cradle (7), ADF(8), inner protection lens (10) and then the ADF retaining frame (9) and finally replace the two retaining screws.
