SCHUBERTH C4 Manual Del Usuario página 58

C. THE HELMET
OPENING THE CHIN BAR
1. Open the chin bar by sliding the red button
located in the middle of the chin zone
forwards in the direction of the arrow as far
as it will go, using your thumb.
2. The chin section flips right up.
CLOSING THE CHIN BAR
To close the chin bar, pivot it down with
one hand until both locks audibly engage.
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