3M Speedglas 9100 Air Directives D'utilisation page 16

Top Extended Coverage Installation (3M
Align hook and loop fasteners as shown (Figs. 15 & 16). If the extended coverage is the long version, secure
fastening loops between the inside of the helmet and the pivot mechanism location of the headgear.
™ Speedglas ™ Welding Helmet 9100 FX-Air)
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Headband and Faceseal Replacement (3M
See Figs. 17 through 22.
Fig. 15
Fig. 16
™ Speedglas ™ Welding Helmet 9100 Air)
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Fig. 17