| Problem |
Cause |
Solution |
| Pump
cycles but does not build pressure |
Pump is not primed |
Prime pump |
| Inlet screen
clogged or suction tube not immersed |
Clean or replace
screen and immerse tube |
| Paint pail is empty |
Refill paint pail
and reprime pump |
| Suction tube is
leaking |
Tighten suction
tube or replace if leaking |
| Pump check valves
are dirty or damaged |
Clean or replace
check valves |
| Spray-prime/drain
valve is worn or obstructed |
Clean drain valve
or replace if worn |
| Pump
cycles but paint only dribbles or spurts when spray gun is triggered |
Pressure is set too
low |
Slowly turn
pressure control knob to increase pressure setting to check if sprayer develops
more pressure |
| Spray tip is
clogged |
Unplug tip |
| Fluid filter is
clogged |
Clean or replace
filter |
| Spray gun fluid
filter is clogged |
Replace gun filter |
| Spray pattern
leaving stripes
|
Tip is worn |
Replace tip |
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