ATTACH M81 IGNITER AND FIRE.
a. Make sure blast area is clear of personnel and equipment.
If shipping plug is removed, shock tube will not properly seat in M81.
b. Loosen (do not remove) fuse holder cap
(1) counterclockwise on M81 and
remove weather-proofing plug (2). Do
not remove shipping plug (3).
c. Using a knife, cut off 1 inch from sealed
end of shock tube (4).
d. Insert shock tube (4) in hole of shipping
plug (3). Push in shock tube (4) as far as
it will go.
e. Tighten fuse holder cap (1) clockwise to
secure shock tube (4).
securely and pull lightly on shock tube
(4) to assure it is secure.