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7
SERVICE CHECK
Normal spray pattern
PROBLEM CAUSE CORRECTION
Will not spray. No pressure to gun.
Screw (11) not properly adjusted.
Check air and material lines.
Adjust.
Improper spray pattern
A, B. Material build up on the air
cap or fluid tip.
C, D. Wrong material or material
too thick.
A, B. Clean the air cap or fluid tip.
C, D. Adjust material pressure or
thin material.
Jerky or fluttering spray
Insufficient material in the tank or
an obstruction in the line.
Gun material passage plugged.
Worn needle packing (18).
Loose or damaged fluid tip.
Fill tank or clean obstruction.
Clean.
Replace.
Tighten or replace.
Fluid leaking from
needle packing nut (19).
Loose needle packing nut (19).
Worn or stuck needle packing
(18).
Tighten.
Replace or lubricate.
Dripping from fluid tip. Worn or damaged fluid tip or
needle.
Stuck needle packing (18) or
needle (9).
Tight packing nut (19).
Loose adjust screw (11).
Replace.
Lubricate.
Adjust.
Tighten.