1 -- Helmet position for earcup          removal

2 -- Earcup bosses and locater        "T"

3 -- Finger position to lift the        bosses

4 -- Lift bosses from each side of        chin strap

5 -- Helmet postion / Ear cup        installation

6 -- Ear cup flexed to make "T"        visible

7 -- Ear cup plate / "T" slot & boss        receivers (note white arrows)

8 -- Liner bosses (4) snap into        receivers

9 -- OBM headset / Interior mount /        No holes or glue on helmet shell

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