SCHUBERTH C5 CARBON Mode D'emploi page 18

CLOSING THE CHIN BAR
To close the chin bar, pivot it down with
one hand until both locks audibly engage.
Caution:
Each time you close the chin bar, check that the locks have engaged
properly by pushing the chin bar upwards. If you are involved in accident
while the chin bar is down without the locks properly engaged, the chin
bar may not afford protection from injury.
Tip:
When using the additional wind deflector, locking the chin bar is easier if
you grip the chin pad underneath with a finger of your other hand to help
you ease the chin bar over your chin.
Caution:
Riding with an open flip-up chin bar is not recommended and could
result in severe head injury or death in an accident. Although we do not
recommend riding with the chin bar open, if you do ride with it open, it
must be locked. It is not permitted to ride with the chin bar only swiveled
up.
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