Mustang Survival M.I.T. 70 User manual

I
FOR MODEL NUMBERS MD4031 AND MD4032
OWNER'S MANUAL
M.I.T. 70
DO NOT REMOVE PRIOR TO SALE
HT1152 REV 3SEPT2019
MD4031 INFLATABLE FLOTATION DEVICE
MANUAL INFLATION MODEL
APPROVED BY UNITED STATES COAST
GUARD AND TRANSPORT CANADA
WARNING: THE MD4031 WILL NOT
INFLATE AUTOMATICALLY UPON
IMMERSION. TAB MUST BE PULLED TO
ACTIVATE INFLATION MECHANISM.
MD4032 INFLATABLE FLOTATION DEVICE
MANUAL WITH AUTOMATIC BACKUP
INFLATION MODEL
APPROVED BY UNITED STATES COAST
GUARD AND TRANSPORT CANADA

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TABLE OFCONTENTS
ABOUT THIS PRODUCT..........................................................................................1
WHAT IS AN INFLATABLE FLOTATION DEVICE?...............................2
AIRLINE OPERATOR POLICY ON CARRIAGE OF
INFLATABLE PFDS AND CO2CARTRIDGES..........................................2
APPROVAL CONDITIONS AND CARRIAGE REGULATIONS .........2
MANDATORY CARRIAGE REQUIREMENTS.......................................... 3
WHY ARE FLOTATION DEVICES REQUIRED
SAFETY EQUIPMENT?..................................................................................... 3
INSTRUCTIONS FOR USE .................................................................................... 4
GETTING TO KNOW YOUR FLOTATION DEVICE............................... 4
INSPECTING COMPONENTS....................................................................4-5
USE AT COLD TEMPERATURES.................................................................. 5
PUTTING IT ON (DONNING)......................................................................... 6
WEAR IT ON THE OUTSIDE AND INTACT! ............................................................6
TAKING IT OFF (DOFFING)........................................................................... 6
INFLATING..............................................................................................................7
1) MANUALLY........................................................................................................................7
2) AUTOMATICALLY AS BACKUP (MD4032) .......................................................7
3) ORALLY ..............................................................................................................................7
SPECIAL CONSIDERATIONS FOR AUTOMATIC DEVICES............. 8
DEFLATING ........................................................................................................... 9
RE-ARMING (MD4031) .............................................................................12-13
RE-ARMING (MD4032) ............................................................................14-16
REPACKING.......................................................................................................... 17
IS YOUR FLOTATION DEVICE IN GOOD
AND SERVICEABLE CONDITION?........................................................... 17

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CARE AND MAINTENANCE INSTRUCTIONS...............................................16
BEFORE EACH WEAR ....................................................................................16
EVERY 6 MONTHS............................................................................................16
LEAK TEST ...........................................................................................................................16
THOROUGH VISUAL EXAMINATION......................................................................16
AFTER EACH INFLATION .............................................................................17
ANNUALLY...........................................................................................................17
CLEANING AND STORING ...........................................................................17
HOW AND WHY TO TEST YOUR FLOTATION DEVICE..................18
MAKE SURE IT FLOATS YOU....................................................................................... 18
MAKE SURE IT WORKS.................................................................................................. 18
LEARN HOW IT WORKS................................................................................................ 18
For MD4032...................................................................................................................... 19
For Both MD4031 and MD4032.............................................................................. 19
TRYING YOUR FLOTATION DEVICE ...................................................... 20
HOW TO TEST YOUR FLOTATION DEVICE USING
THE AUTOMATIC INFLATOR (FOR MD4032 ONLY) ......................21
HOW TO TEST YOUR FLOTATION DEVICE USING
THE MANUAL INFLATOR ............................................................................22
HOW TO TEST YOUR FLOTATION DEVICE USING
THE ORAL INFLATOR...................................................................................23
CHOOSE A FLOTATION DEVICE
THAT YOU WILL WANT TO WEAR .........................................................24
COLD SHOCK.....................................................................................................24
HYPOTHERMIA..................................................................................................24
MAKE SURE YOUR DEVICE FUNCTIONS PROPERLY...................25
ADDITIONAL INFORMATION.....................................................................26
DO NOT ATTACH FLOTATION DEVICES TO YOUR BOAT............26

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ABOUT THIS PRODUCT
The MIT 70 (which includes models MD4031 and MD4032) is from
Mustang Survival’s Inshore Flotation series, specifically designed
for activities where adventurers can see the shore in calm or
inland waters.
Your Mustang Survival MIT 70 flotation device is the smallest
approved inflatable flotation device, designed for multi-sport
individuals seeking a versatile solution. It is discreet and lightweight
and can support any adventure without compromising safety in
inshore conditions.
Here are some of the features that set this product apart, and make
it particularly well suited to many inshore activities:
• Automatically inflates upon water immersion (MD4032 only)
• Manually inflates by pulling the inflator pull-tab
• Exclusive Membrane Inflatable Technology™ (M.I.T.) creates a
lightweight, flexible fit
• Easy-access inflator eases re-arming
• Provides at least 70 Newtons (15.7 lbs) buoyancy when inflated
• High visibility, contrasting fabric when inflated increases visibility
in rescue scenarios
• Belt extender sold separately (model MA7637)
This flotation device is designed for wearers over 16 years of age,
with a chest range of 76-132 cm (30-52 inches), and weighing over
41 kg (90 lbs).

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WHAT IS AN INFLATABLE FLOTATION DEVICE?
While traditional flotation devices are inherently buoyant, this
flotation device relies entirely on inflation for buoyancy. Uninflated,
your device is designed to oer maximum mobility with minimum
bulk. The MIT 70 is a comfortable slim collar that can be inflated
at any time with a 17-gram carbon dioxide (CO2) gas cylinder to
provide at least 70 Newtons (15.7 lbs) buoyancy. The MD4031
model can be inflated either manually by jerking a pull-tab or
orally (by mouth). The MD4032 model can be inflated either
automatically during water immersion, manually by jerking a
pull-tab, or orally (by mouth). We recommend that you familiarize
yourself with your device as described in “Instructions for Use,”
page 4.
AIRLINE OPERATOR POLICY ON CARRIAGE OF
INFLATABLEPFDsAND CO2CARTRIDGES
Please be aware that regulations may apply to the air transport
of this product. With the approval of the aircraft operator,
CO2cylinder(s) may be carried by a passenger or crew in checked
or carry-on baggage.
Please consult airline operator policy.
APPROVAL CONDITIONS AND CARRIAGE REGULATIONS
This inflatable flotation device is approved by Transport Canada and
the U.S. Coast Guard. It is not approved for white water paddling,
water skiing or other high impact, high speed activities. This inflatable
flotation device was designed to be more comfortable and less
restrictive to wear than inherently buoyant flotation devices. When
worn, used, and serviced according to this owner’s manual, this
flotation device can greatly increase your chances of survival in the
water. Not recommended for non-swimmers or weak swimmers.
Users of this inflatable flotation device must be at least 16 years old.

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MANDATORY CARRIAGE REQUIREMENTS
The U.S. Coast Guard and Transport Canada require you to carry
approved flotation devices of the correct size for each person on
board that are legibly marked with an approval number and are in
good and serviceable condition. To be considered serviceable, this
flotation device shall not exhibit deterioration that could diminish
its performance such as broken or deformed hardware, detached
webbing, rotted structural components, air leaks, or nonfunctional
oral inflation tube. Unless worn inflated, this flotation device must
also be properly armed with a full CO2cylinder, inflation system status
indicator, and an accessible manual inflation lanyard. A flotation
device which is “approved only when worn” or “required to be worn”
must be worn under the specified conditions.
WHY ARE FLOTATION DEVICES REQUIRED SAFETY EQUIPMENT?
Drowning is the leading cause of fatalities involving recreational
boating. In over 80 percent of fatal incidents the person was not
wearing flotation, and most of these occurred after falls overboard
or capsize of small boats. An approved flotation device, when worn,
helps raise your head above water in the first critical moments of
immersion. Some devices are designed to keep you face up in the
water, and increase your chances for survival and rescue. Dierent
body types float dierently, and some boating activities require
special features in a flotation device.

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INSTRUCTIONS FOR USE
GETTING TO KNOW YOUR FLOTATION DEVICE
Because your flotation device is designed to save your life, you
need to be comfortable using it and thoroughly familiar with how
it works. If you just purchased or have not yet used your flotation
device, Transport Canada and the U.S. Coast Guard recommend
that you immediately test it as described in “How and Why to Test
Your Flotation Device,” page 18. This will not only ensure your
device is in good condition, it will give you experience using all
methods of inflation.
After initial testing, get in the habit of inspecting your flotation device
before each use, re-arming it after each use, and of course wearing it
every time you go out on the water.
INSPECTING COMPONENTS
Before each use, check your flotation device for readiness:
1. Place your flotation device on a flat surface with the bottom
of the device facing you. At the bottom of the left lobe, lift
the inflator cover to expose the inflator and cylinder assembly.
Examine the service indicator to ensure it is green (Fig. 1). If
the service indicator is red, the mechanism has been fired or is
incorrectly fitted and must be re-armed (see “Re-arming” on
page 10 for MD4031 or page 12 for MD4032). The service
indicator must be GREEN before you proceed.
MD4032
Automatic Inflator
Pull-tab
MD4031
Manual Inflator
Pull-tab
FIGURE 1 SERVICE INDICATORS

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2. For the MD4032 only: Ensure the bobbin is valid. The flotation
device, or bobbin, must have been purchased within the last
three years.
If you do not know the purchase date, check the date printed
on the bobbin. If it is earlier than three years ago, re-arm your
flotation device (see “Re-arming” on page 12).
3. Undo the Velcro™ strips along both sides of the flotation device.
4. Ensure the oral-inflation cap is in the stowed position (Fig. 6).
5. Check for damage or excessive abrasion, wear, tear and/or any
visible foreign matter, such as mildew or oil stains. Check that all
seams are secure, and all straps and hardware are sound. If you
see any signs of damage, perform the “Every Six Months” tests,
described in “Care and Maintenance,” page 16.
6. Ensure the pull-tab lanyard is hanging on the outside, and secure
the Velcro™ strips on both sides of the flotation device.
CONTACT YOUR MUSTANG DEALER IF YOU HAVE ANY CONCERNS
ABOUT THE READINESS OF YOUR FLOTATION DEVICE.
USE AT COLD TEMPERATURES
As temperatures approach freezing, your flotation device will provide
less buoyancy and will inflate more slowly. At temperatures near
freezing, the device should be worn partially inflated with the CO2
cylinder to ensure that some buoyancy is immediately available to you
if you fall overboard. The oral inflator can then be used to adequately
top up the flotation device after CO2inflation.
Caution: Do not fully inflate the device orally and then activate the
CO2cylinder. The resulting overpressure could seriously damage the
device resulting in loss of flotation.
Inflatable flotation devices are not recommended for use in
temperatures below freezing.

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PUTTING IT ON (DONNING)
It is important that your flotation device fits properly. Incorrect fit or
improper fastening of attachments could impede its eectiveness.
1. Put the flotation device on just like a vest (Fig. 2), with the fabric
panels in the front, and fasten the front buckle.
2. Adjust the waist belt using its side buckle, and secure the belt’s
loose end with the belt loop. All belts and straps are already
threaded correctly and only need to be adjusted for fit. The belt
should sit below your rib cage, tightened to fit snugly.
FIGURE 2
3. Check the fit by pinching the belt strap, just as you would a
waistband. If you can pinch the material together, tighten your
flotation device.
Wear it on the outside and intact!
Always wear inflatable flotation devices over clothing (as the
outermost layer) to avoid restricted inflation, which could cause
personal injury and/or damage to your device.
Do not tie or sew anything to the outside of (or around) your flotation
device, as it may compromise your device’s ability to inflate.
TAKING IT OFF (DOFFING)
1. If your flotation device has been inflated, partially deflate it while
still wearing it to make doffing easier.
2. Loosen your waist belt and unfasten the front buckle.
3. Slip your arms out of the straps.
DONNING

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INFLATING
Your flotation device inflates manually, orally, and (for MD4032 only)
automatically. No matter how your flotation device inflates, it can
always be topped up orally – extending your ability to keep afloat.
The inflation instructions below use ‘left’ and ‘right’ assuming you are
wearing the flotation device during inflation – so your left or right is
also the device’s.
1. Manually
Activate the inflation system by
jerking firmly downward on the
pull-tab (Fig. 3). The flotation device
should fully inflate within
five seconds.
2. Automatically as backup
(MD4032)
Inflation will occur automatically
within 10 seconds after the inflator
is immersed in water. The water-
sensing bobbin will disintegrate,
triggering a spring-loaded plunger,
which punctures the CO2cylinder
(Fig. 8 and 9) to inflate the
flotation device. See also
“Special Considerations for
Automatic Devices,” next page.
3. Orally
To orally inflate the flotation
device, first locate the oral inflation
tube by opening your left front
panel. Remove the cap from the
end of the oral tube and blow into
the tube until the flotation device
is fully inflated (Fig. 4). Place the
oral tube cap back in the stowed
position (Fig. 6).
MD4031 MD4032
Manual Inflator Automatic Inflator
FIGURE 3 PULL-TAB
FIGURE 4 ORAL INFLATION

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PULL-TAB
ORAL INFLATION
SPECIAL CONSIDERATIONS FOR AUTOMATIC DEVICES
(MD4032)
The flotation device might not be armed when needed, either
knowingly or unknowingly, which is why before each use you should
inspect the inflator and ensure the service indicator is green.
Another consideration is premature automatic inflation, which can
occur in certain conditions, including when the device is subjected
to heavy splashing, high humidity, heavy fog, and heavy rain. If you
are using the device in these types of conditions, you may choose to
instead use a manual device or an automatic device where the inflator
requires hydrostatic pressure to activate.
Premature inflation when you are in an awkward place or position could
cause personal injury and/or damage to the device. Premature inflation
when the device is stored in a tight space could cause damage.
If this flotation device should inflate prematurely, you must
re-arm according to the instructions in this manual, using a re-arm
kit (MA4031).
CO2ESCAPES THROUGH THE MATERIAL OVER TIME
Manual (and automatic) inflation uses carbon dioxide (CO2gas) to fill your
flotation device. Over time, the CO2gas will slowly escape through the fabric,
and you may feel that the flotation device is losing pressure. If you’re in the
water for a prolonged period, you may need to top up your device orally.
AVOID DOUBLE INFLATION!
Do not manually or automatically activate the inflator when your flotation
device is filled with air. Doing so will result in excessively high pressure within
the inflation chamber, which may cause permanent damage to your device and/
or extreme discomfort to you.

FIGURE 5
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DEFLATING
Complete deflation is easiest when you are not wearing the
flotation device.
1. To deflate the flotation device, reverse the oral inflator cap
and insert it into the valve. The cap will not lock in the deflate
position, so you must hold it in place (Fig. 5).
2. Gently squeeze the flotation device until all air or gas has been
expelled. Put the cap back in its stowed position on the oral
inflator (Fig. 6).
Cap in
deflate
position
Cap in
deflate
position
Cap in
stowed
position
FIGURE 6
Cap in
deflate
position
Cap in
deflate
position
Cap in
stowed
position
DEFLATE POSITION CLOSE-UP VIEW

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CLOSE-UP VIEW
RE-ARMING (MD4031)
To re-arm your flotation device, you will need Mustang Survival’s
Re-Arm Kit MA4031. The spent inflation parts will first be removed,
and replacement parts will be installed. The re-arm kit includes:
• 17g CO2cylinder
• Bobbin (which you will not use for MD4031)
1. Place your flotation device on a flat surface with the bottom of
the device facing you.
2. Open the inflator cover to expose the manual inflator (Fig. 7).
3. Remove the cylinder/bayonet assembly by turning it
counterclockwise and then pulling it out. Discard the used
cylinder/bayonet assembly.
4. Check the new cylinder/bayonet assembly to ensure the o-ring is
in place and the sensor ring is attached (Fig. 7). Ensure that the
CO2cylinder has not been pierced (Fig. 8).
5. Raise, and hold, the lever into the inflator housing. Install a new
cylinder/bayonet assembly by engaging bayonet tabs in housing,
pushing in, then turning clockwise 1/8 turn to a full stop (Fig. 7).
FLOTATION DEVICE WILL ONLY INFLATE IF CYLINDER IS TURNED TO A FULL STOP.
6. Examine the service indicator (Fig. 7) and ensure it is GREEN. If
the service indicator is red, the mechanism has been fired or is
incorrectly fitted and the inflator requires service.
7. Ensure you have successfully re-armed by performing a leak test
(see “Care and Maintenance/Every Six Months,” page 16). (If the
cylinder is improperly installed, the o-ring won’t make a proper
seal and the air will leak around it.)

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C02Cylinder
Sensor Ring
Bayonet
Tab
O-Ring
Pull-tab Lev
er
Service Indicator
If GREEN
unit is operable
If RED
stop and service unit
Tab
Piercing Pin
C02Cylinder
Pull-tab Lever
Service Indicator
Install with 1/8
turn clockwise
Cylinder/Bayonet Assembly
Remove by
turning counter
clockwise
FIGURE 7 MD4031 MANUAL INFLATOR

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RE-ARMING (MD4032)
To re-arm your flotation device, you will need Mustang Survival’s
Re-Arm Kit MA4031. The spent inflation parts will first be removed,
and replacement parts will be installed. The re-arm kit includes:
• 17g CO2cylinder
• Bobbin
1. Place your flotation device on a flat surface with the bottom of
the device facing you.
2. Open the inflator cover to expose the automatic
inflator (Fig. 9).
3. Remove the cylinder/bayonet assembly by turning it
counterclockwise and then pulling it out. Discard the used
cylinder/bayonet assembly.
4. Remove the cap by turning counterclockwise. (Fig. 9).
5. Remove yellow bobbin from cap or housing unit. Discard the
bobbin. (Make sure to completely remove the bobbin from the
housing and the cap assembly before re-arming. If any part of the
bobbin remains, you cannot properly re-arm your flotation device.)
6. Check the housing to be sure it is clear and dry. If necessary,
rinse the inflator with fresh water to remove dirt and salt. Let dry
before going to step 7.
7. Inspect the bobbin. If the bobbin has been fired or damaged,
replace it! Ensure the new bobbin is valid. It must have been
purchased within the last three years. If you do not know the
purchase date, check the date printed on the bobbin. If it is earlier
than three years ago, replace the bobbin.
Solid
Cylinder
Top
At
tached
Sensor
Ring
Pierced
Cylinder
Top
Broken
Sensor
Ring
Caution: Do not use the
cylinder/bay
onet assembly
if either the o-ring or
sensor ring is broken,
missing, or damaged.
FIGURE 8 CHECKING C02CYLINDER

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Cap
Yellow Bobbin
(white side up)
Housing
Housing Shoulder
Service Indicator
C02Cylinder
Cylinder/Bayonet Assembly
Sensor Ring
Bayonet
Tab
O-Ring
Lever
Pull-tab
Service
Indicator
Groove
Pull-cord
Tab
Piercing
Pin
C02Cylinder
If GREEN
unit is operable
If RED
stop and service unit
Remove by
turning counter
clockwise
Install with
1/8 turn
clockwise
FIGURE 9 MD4032 AUTOMATIC INFLATOR

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8. Install the bobbin into the housing (Fig. 9), white side up, aligning
the slots on the bobbin with the ridges inside the threaded
housing. The bobbin will slide in easily.
9. Install the cap by screwing clockwise until it meets the
housing shoulder.
10. Check the new cylinder/bayonet assembly to ensure the o-ring is
in place and the sensor ring is attached (Fig. 9). Ensure that the
CO2cylinder has not been pierced (Fig. 8).
YOU WILL DAMAGE THE SENSOR RING IF BOBBIN AND CAP ARE NOT
INSTALLED FIRST.
11. Push, and hold, the lever into the inflator housing. The pull-cord
should be situated in the groove (Fig. 9). Install a new cylinder/
bayonet assembly by engaging bayonet tabs in housing, pushing
in, then turning clockwise 1/8 turn to a full stop (Fig. 9).
FLOTATION DEVICE WILL ONLY INFLATE IF CYLINDER IS TURNED TO A FULL STOP.
12. Examine the service indicator (Fig. 9) and ensure it is GREEN. If
the service indicator is red, the mechanism has been fired or is
incorrectly fitted and the inflator requires service.
13. Ensure you have successfully re-armed by performing a leak test
(see “Care and Maintenance/Every Six Months,” page 16). (If the
cylinder is improperly installed, the o-ring won’t make a proper
seal and the air will leak around it.)

FIGURE 10 FIGURE 11
15
REPACKING
Repacking should only be done after deflating and re-arming the
flotation device.
1. Fold sides (A) and (B) outward along dotted lines. Engage the
Velcro™ strips (Fig. 10).
2. Make sure the inflator pull-tab hangs out from the bottom of the
folded flotation device.
Fig. 11 depicts a correctly folded flotation device.
AB
FOLD SIDES CORRECT
IS YOUR FLOTATION DEVICE IN GOOD AND
SERVICEABLE CONDITION?
Check your flotation device between outings to be sure that it is
properly armed; that it is free of rips, tears, or holes; that all seams
are securely sewn; and that the fabric, straps, and hardware are
still strong. Inspect the inflatable portion of the flotation device in
accordance with “Care and Maintenance,” next page.

16
CARE AND MAINTENANCE
To ensure your flotation device performs when you need it, you must
care for and maintain it in serviceable condition (see “Mandatory
Carriage Requirements,” page 3). Failure to follow these instructions
rigorously could result in a non-functioning flotation device causing
injury or death. We suggest you keep a record of the inspections
performed on your flotation device – using permanent ink on the
Care and Storage label below the oral inflation tube. If you are not
confident that you can care for and maintain your flotation device, or
if you are in doubt about these instructions, contact Mustang Survival
customer service.
You are required to check this flotation device:
• Before each wear (component inspection)
• Every six months (leak test and thorough visual examination)
• After each inflation (perform re-arm)
• Annually (suggested at the beginning of each boating season)
BEFORE EACH WEAR
See “Inspecting Components,” page 4, for instructions. If you see any
signs of damage, perform the “Every Six Months” tests below.
EVERY SIX MONTHS
The following tests are suggested every six months at minimum or
whenever you see signs of damage to your flotation device. Perform
these tests more often if the flotation device is exposed to potential
damage or used in extreme conditions.
• Leak Test
Orally inflate your flotation device until firm and let stand six hours
minimum. As long as your flotation device has been inflated orally
(not by CO2cylinder ) it should hold its firmness for this length of
time. If this is not the case, your flotation device is leaking and should
be replaced. If your flotation device leaks, contact Mustang Survival
customer service.
• Thorough Visual Examination
See “Inspecting Components,” page 4.

17
AFTER EACH INFLATION
Deflate and re-arm, as described in “Re-arming,” page 10 for MD4031
or page 12 for MD4032.
ANNUALLY
Perform the following at the beginning of each boating season, after
inflation, or whenever the integrity of the flotation device is in doubt:
1. Check all components for dirt or corrosion (see “Inspecting
Components,” page 4). Clean or replace as necessary.
2. Visually examine your flotation device for damage or excessive
abrasion, wear, tear, or contamination. Particular attention must
be paid to the stitching, straps, and hardware. If in doubt, contact
Mustang Survival customer service for evaluation and/or servicing.
3. Perform the Leak Test as outlined on previous page.
4. Deflate as outlined in “Deflating,” page 9.
5. Ensure service indicator is green.
6. Record the date, noting “annual” in permanent ink on the Care
and Storage label, located below the oral inflation tube.
CLEANING AND STORING
To clean your flotation device:
• Hand wash flotation device or sponge it down in warm, soapy
water, taking care not to expose the inflator to water.
• Rinse with clean water.
• Hang to dry on a plastic coat hanger.
• Store the dry flotation device in a warm, dry, and well ventilated
place out of direct sunlight.
DO NOT DRY-CLEAN, USE CHLORINE BLEACH, OR APPLY DIRECT HEAT.