3M Speedglas 9100 FX Série Directives D'utilisation page 13

Clear Grinding Visor Replacement
Remove black grinding visor frame by gently lifting on the 4 tabs. Remove and replace the clear grinding visor
and replace the black grinding visor frame (Figs. 11 & 12).
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Top Extended Coverage Installation
Align hook and loop fasteners as shown (Figs. 13 & 14). If the extended coverage is the large version, secure
fastening loops between the inside of the helmet and the pivot mechanism location of the headgear.
Fig. 11
Fig. 12
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Fig. 13
Fig. 14