Roof RO31 DESMO, How To Use And Maintain

21

MICROMETRICAL CHINSTRAP

EN

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HOW TO USE THE ROOF MICROMETRICAL CHINSTRAP
Correct tension of the strap is essential for your security: it will prevent 

loosening risks in the case of an accident. Incorrect adjustment or 

misuse of the micrometric buckle can result in loss of the helmet, with 

grave consequences to your health and even your life.

THE CHINSTRAP MUST BE CLOSED WHEN YOU ARE ON THE ROAD!

CLOSING / OPENING
The chinstrap should be snug yet comfortable. Close the chinstrap by 

inserting the toothed portion in the red buckle. Press the toothed 

portion until the chinstrap is stretched. For optimal closure, ensure that 

the toothed portion is inserted at least 5 teeth into the clasp. 

If the chinstrap clamps you excessively or, on 

the contrary, the helmet has a tendency to 

become unsettled, it is necessary to perform 

a pre-setting of the flexible strand of the 

chinstrap.

To open the chinstrap, pull the strap in order 

to lift the red part of the clasp and remove the 

toothed portion (see opposite).

ADJUSTMENT OF THE FLEXIBLE STRAND OF THE CHINSTRAP
Remove the helmet. Slide the flexible strand of the chinstrap through the 

loop components to lengthen or shorten it. Repeat this operation until 

the toothed portion optimally closes in the red shutter.

INSPECTION AND MAINTENANCE
In order to ensure the proper functioning of the micrometric buckle, it is 

important to check that the red part rotates freely between its open po-

sition and its closed position, with its spring mechanism. Sometimes salt 

and sand block the clasp when it is not properly maintained. So don’t 

forget to clean and oil the mechanism regularly. Then check again that 

the chinstrap is properly adjusted before setting off.