Assembly
1
Attach mud hose
assembly to tank out-
let. Thread mud hose
fitting into bottom cap
until tight.
2
Insert the coiled blue
air hose into the push-
lock fitting in the bot-
tom of the pneumatic
assembly cover until it
locks in place.
3
Attach mud hose
assembly to the bottom
inlet of gun. Tighten by
hand. DO NOT OVER
TIGHTEN.
4
Connect the quick-
disconnect coupler into
the back of the gun.
5
Place bottom of tank
over backpack support
bar and lock straps.
Ensure the pneumatic
assembly faces the
right side. Tighten
straps until there is a
secure fit.
6
Cut one end of the fill
hose ½" deep length-
wise and connect this
end of the fill hose to
the outlet of your mud
pump. Tighten clamp
with screw driver.
Priming the Unit
1
Flip toggle switch to
FILL/OFF. To remove
the top cap, begin by
loosening the top bolts
1-2 turns.
2
Next, while pulling and
holding the top cap
release pin up (red),
turn the top cap coun-
ter clockwise until it
stops. Lift up on the
cap to remove.
NOTE: YOU MAY FEEL SUBSTANTIAL
RESISTENCE THE FIRST TIME YOU
TRY TO TWIST THE TOP CAP. THIS
IS CAUSED BY THE SEAL LUBRICANT
THAT WAS APPLIED PRIOR TO SHIPPING.
THIS IS NORMAL.
3
Remove piston by
squeezing the gun trig-
ger and pulling upward
on the piston handle.
4
Next, fill the tank ¾ full
of drywall compound
by pouring mixed mud
into the top of the tank.
Insert piston into tank
and push down until
it is situated on top
of the mud. A slight
twisting or rocking motion may be necessary
to release the air trapped between the piston
and the mud.
5
Place top cap back
onto the tank. Once
the top cap is securely
in place, push down
the lock release to
ensure a tight fit.
3