3
Use and Adjustment
For adequate protection, this helmet must fit or be adjusted to the size of the user’s head.
The attention of users is also drawn to the danger of modifying or removing any of the original component parts of the
helmet, other than as recommended by the helmet manufacturer. Helmets should not be adapted for the purpose of
fitting attachments in any way not recommended by the helmet manufacturer.
3.1
Basic Adjustments
Basic adjustments should enable a high level of comfort for most users. They can be performed with the helmet on the
head.
WARNING!
To provide maximum protection, make sure to adjust the helmet properly. Tightening the ratchet beyond its limits can
cause damage to internal gears and result in reduced protection.
Do not store equipment that is not explicitly authorized by MSA in or on the helmet. The storage of gloves, wedges,
lights, and other equipment in or on the helmet can dramatically change the protective capacity of the helmet.
Failure to follow this warning can result in serious personal injury or death.
Helmet Donning
(1)
Position the chinstrap as shown.
(2)
Grab the helmet with both hands and install it on your head.
(3)
If too tight, open the headband by adjusting the knob (anticlockwise).
Head Size Adjustment
(1)
Adjust the head size using the knob (clockwise to tighten, anticlockwise to
loosen) until you reach a snug fit on the head.
(2)
Check tightness: helmet should not fall when leaning forward (with open
chinstrap).
Chinstrap and Retention System Adjustment
WARNING!
Never wear the helmet without fastening and tightening the chinstrap.
Failure to follow this warning can result in serious personal injury or death.
The retention system includes 5 adjustment points (chin, sides and rear) to secure retention on the head through a tight
fit of the chinstrap and rear straps.
6
US
3 Use and Adjustment