2-7. Donning Procedures - continued.
Table 2-3. Donning Procedures - CONT
5. Don helmet
a. Position helmet, face port down on soft surface with head cushion
neck strap sticking out, in front of diver.
b. Pick up helmet by grasping the lower opening, holding the
protruding head cushion with thumbs, while holding tail of chin
strap under left thumb.
c. Pull helmet down over head and from side to side until it is
aligned with the neck clamp and yoke and feels comfortable.
d. Pull chin strap down and fasten under chin. Ensure strap is not
trapped between helmet and neck dam.
e. Pushing neck clamp and yoke rearward, place rear hinge tab on
alignment sleeve. Diver tilts head upward to allow neck dam to
clear lower front portion of helmet.