Graco Inc. 288592 Manuel D’Utilisation

Normal pattern.

No action necessary.

Dirty or damaged air cap or fluid 
nozzle.

Rotate air cap 180°.

If pattern follows air cap, problem is in air 
cap (13). Clean and inspect. If pattern is 
not corrected, replace air cap.

If pattern does not follow the air cap, the 
problem is with the fluid nozzle. Clean 
and inspect the nozzle. If the pattern is 
not corrected, replace nozzle.

Pressure too high for viscosity of 
material being sprayed.

Reduce air pressure and increase 
material viscosity.

Correct pattern by narrowing fan size with 
spray width adjustment knob (8).

Dirty or distorted air horn holes.

Clean and inspect air cap. If pattern is not 
corrected, replace air cap.

Gun spitting

Air getting into paint stream.

Check if cup is empty and fill.

Tighten fluid nozzle (11).

Check and tighten needle packing nut (17).

Check fluid nozzle (11) for damage.

Will not spray

Cup is empty.

Fill cup.

Fluid adjustment knob (8) turned 
too far clockwise.

Adjust knob (8) counterclockwise.

Excessive air 
blowing back

Loose fluid nozzle (11).

Tighten fluid nozzle (11).

Damaged fluid nozzle seal (21).

Replace seal (21).

Heavy top 

or bottom 

pattern

Split pattern