Kirby Morgan 77
Open the locking collar/neck pad assembly fully.
The locking collar must be completely open for the diver to don the helmet.
The diver inserts the tongue on the neck dam/ring as- sembly into the swing tongue catch. The tender must check to see that this is properly engaged.
Push the neck dam/ring up into the neck ring on the base of the helmet .
With the helmet face down, pull the sealed pull pins and open the locking collar/neck pad assembly fully. Be sure the head cushion is attached to the bottom of the helmet. Pull the nose block device knob out all the way.
Loosen the chin strap all the way. The helmet is worn most comfortably when the chin cushion against the diver’s chin with the chin strap outside of the chin cushion.
With the locking collar/neck pad assembly fully open, lift the helmet and place it over your head. Lower the helmet onto the back of your head first, then pivot it forward until your face is in position against the oral nasal mask.
The locking collar/neck pad assembly must be open and hanging down behind your shoulders. Tighten the chin strap so that it is comfortable under your jaw.
Now, the neck dam/ring assembly is resting directly
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