2-3. OPERATING PROCEDURES-Continued
Nape Strap Adjustment.
With chin strap adjusted and attached, the nape strap
should fit firmly against the nape of the neck.
To provide a snug fit with the chin strap fastened, tighten the nape strap with the helmet on by pulling on
the free end following these procedures:
(1) Hold nape strap buckle (1) in a vertical position to the nape strap (2).
(2) To TIGHTEN, pull on free end of nape strap (3).
(3) To LOOSEN, pull on nape strap (2).
(4) To ensure proper helmet fit and stability after adjustment, don the helmet so that it fits snugly, tighten
the nape and chin straps and shake head vigorously. If helmet moves independently of the head, it
must be refitted.