AFX FX-55 Mode D'emploi page 7

Please refer to the diagrams to make sure you have done up the strap
correctly, and as always do not ride with the chinstrap and retention
system not done up in the correct illustrated manner. And as a reminder
make sure before you ride, test to see that the helmet cannot be
removed from your head when the quick release retention system is
adjusted for your specific fit.
To remove the chinstrap, lift the pull-tab on the ratchet receiver as
shown in the diagram below. Then you can pull out the ratchet tab.
Always make sure to inspect your chinstrap and retention system either
before or after every ride, if your chinstrap or retention system shows any
signs of wear the helmet should be replaced immediately. Never ride
with a helmet that has worn, damaged, or missing chinstrap or retention
system parts. Make no modification to the chinstrap or retention system
in anyway.
FASTEN CHIN STRAP
REMOVE CHIN STRAP
Please make sure that the chinstrap and retention
system is always fastened as instructed above. Failure
to do so may result in fatal injury or possible death.
1
PULL TAB
1
RATCHET RECEIVER
2
RATCHET TAB
3
STRAP BUCKLE
4
CHIN STRAP
5
2
3
4
5
7