Graco 288048 Paint Sprayer User Manual


 
Troubleshooting
16 311053H
Spray Pattern Troubleshooting
Problem Cause Solution
Fluttering spray. Insufficient fluid supply.
Air in paint supply line.
Adjust fluid regulator or fill fluid sup-
ply tank.
Check, tighten siphon hose connec-
tions, bleed air from paint line.
Spitting spray. Worn seat (10, 41) or needle (12)
ball.
Dirty spray tip (9).
Swollen piston o-ring (22).
Inspect seat and needle for wear.
Replace if necessary. The gasket
(11) must be replaced whenever you
remove the seat from the gun.
Clean.
Replace o-ring. Do not immerse pis-
ton in solvent.
Irregular pattern. Fluid build-up or spray tip partially
plugged.
Clean spray tip; see Daily Gun Care,
page 12.
Air cap loosening. (Sealant gun only) Air cap (18) not properly tightened.
Gasket (38) worn.
Tighten. See Reassembly, page 19,
step 13.
Replace gasket.