Use rearming kit # 33mrk – SOSpenders 33MSPT User Manual
Page 3

INFLATED DONNING - Depress oral 
inflation tube valve located on left side 
of chamber until the chamber is mostly 
deflated. Don as described above and 
reinflate with the oral tube until firm.
1.
Inspect arming mechanism and
 cylinder - if RED, service mechanism.
 Don like a jacket, with buckle centered 
 in front, with “
Jerk to Inflate” handle at
lower right.
2. 
Snap buckle at 
center front.
3. 
Adjust side 
straps to a 
snug fit.
Donning Instructions -
Jerk to Inflate
Tab
Created: 2006-10-19
3
SPECIFICATIONS
Chest Size: Adult Small/Medium – 30 - 42 inches (76 - 107 cm)
Adult Large/X-Large – 44 - 48 inches (112 - 122 cm)
Weight Range: More than 90 pounds (41 kg)
Age Range: 16 years of age and older
Buoyancy (minimum): 33.7 Pounds (150 Newtons) when fully inflated
Inflation System: 
Manual Inflation Mechanism (located on your right side)
Oral Tube - (located on your left side)
Jerk to Inflate Tab - (located on your right side) used to manually
activate the inflation mechanism and inflate the PFD.
CO
2
Cylinder: 33 gram with cylinder seal indicator.
Indicators: For the PFD to be fully armed, a cylinder must be inserted
into the mechanism and the cylinder seal indicator must be Green.
•• USE REARMING KIT # 33MRK ••
DONNING INSTRUCTIONS
Practice closing hardware and adjusting before use or prior to in-water
testing.
