Two people are required to perform the following steps.
Lay the rebreather system face down with the top towards the user.
Extend shoulder straps (8).
Grasp the sides of the rebreather system.
The shoulder straps should be outside the arms.
Raise the rebreather system over your head.
Bend forward and let the rebreather system slide down your back.
Tighten shoulder straps (8).
Fasten and adjust waist strap (9).
It may be necessary to loosen the ice vest adjusting straps to perform the next step.
Pass chest strap (10) under the ice vest and fasten.
Fully extend face piece (11) head harness straps (12), (13) and (14).
Place chin into the lower part of face piece (11).
aa. Quickly open cylinder valve (15) and listen for a short "chirp" from the alarm whistle.
ab. Pull head harness straps (12), (13) and (14) back over your head and adjust for a tight seal as follows:
Ensure all straps lie flat on the head.
Tighten chin straps (12).
Tighten temple straps (13).
Tighten top head strap (14).