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PROBLEM
Material pulses or surges.
Speed of application too slow
Pattern too fine or too much
overspray
Pattern too coarse.
16
308–718
Troubleshooting
CAUSE
Triggering too fast.
Leaky or damaged duck bills.
Not enough air pressure to pump.
Material too thick.
Nozzle is too small.
Hose plugged or too small.
Leaky or damaged duck bills.
Pump needs repair.
Material too thin.
Air pressure at gun is too high.
Fluid delivery is too low.
Material too thick.
Air pressure at gun is too low.
Fluid delivery is too high.
SOLUTION
Squeeze trigger slowly to fully open
position while moving gun quickly in a
circular motion.
Clean and inspect duck bills.
Note: Match pump part number
with the correct pump breakdown in
308–781. Not all texture pumps
have the same assembly order.
Shut off air at the gun and increase
air pressure to the pump to maxi-
mum. Turn regulator clockwise to
increase.
Material must be mixed thoroughly
to a consistency that immediately
folds back in as you draw your fin-
ger through the surface of the ma-
terial.
Increase nozzle size.
Relieve pressure, clean hose or try
a 1–1/4 in. hose.
Clean and inspect duck bills.
Note: Match pump part number
with the correct pump breakdown in
308–781. Not all texture pumps
have the same assembly order.
See pump manual 308–781.
Thicken material. Material must be
mixed thoroughly to a consistency
that immediately folds back in as
you draw your finger through the
surface of the material.
Decrease air to gun at gun fitting.
Increase nozzle size
Increase air pressure to pump and/
or decrease air to gun at gun fitting
Turn fluid knob out on gun. See
spray technique on pg. 10.
Thin material. Material must be
mixed thoroughly to a consistency
that immediately folds back in as
you draw your finger through the
surface of the material.
Increase air to gun at gun fitting.
Decrease nozzle size
Decrease air pressure to pump and/
or increase air to gun at gun fitting
Turn fluid knob in on gun. See
spray techniques on pages 10
and 11.
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