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technical manual operator instructions

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3.1 CHECKING DRINKING SYSTEM FOR LEAKS (CONT).<br />

d. Flip open cover (3) on M1 canteen cap (4).<br />

e. Push external drink tube coupling (5) into<br />

M1 canteen cap (4) with canteen so that<br />

pin (6) enters coupling (5).<br />

f. Holding canteen upright, blow into internal drink tube. If<br />

resistance is not felt, drinking system is leaking;<br />

Notify unit maintenance.<br />

3.2 CHECKING YOUR MASK FOR LEAKS.<br />

WARNING<br />

You must check your mask for leaks when<br />

fitted and each time mask is put on.<br />

a. Remove baffle if present or pinch hose shut.<br />

3-2

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