3-10. REBREATHER SYSTEM MAINTENANCE INSTRUCTIONS . (CONT)
If the water displacement is less than six inches of water, remove the #6 one-hole stopper (3) from exhalation
hose connector (9) of face piece (8) and tighten head harness straps (5), (6), and (7)
Reinsert the #6 one-hole stopper (3) into exhalation hose connector (9) of face piece (8) and repeat steps o.
Repeat steps s. and t. until a proper face piece (8) seal can be achieved.
If a proper seal cannot be achieved, replace face piece (8).
Lay the rebreather system on a flat surface.