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Troubleshooting
Problem
Sprayer runs, but pump does
not prime or loses prime while
in use (pump cycles but does
not pump material or build
pressure).
Pump is primed, but can not
achieve good spray pattern.
28
Cause
Inlet valve check ball is stuck.
Prime/Spray Valve is in
SPRAY position.
Inlet strainer is clogged or
Hopper is empty.
Inlet valve check ball or seat is
dirty.
Outlet valve check ball is
stuck.
Prime/Spray Valve is worn or
obstructed with debris.
Spray Tip is in UNCLOG
position.
Pressure is set too low.
Spray Tip gasket and seal
worn or missing.
Inlet strainer is clogged or
Hopper is empty.
Extension cord is too long or
not heavy enough gauge.
Inlet Valve or outlet pump
valve is worn or clogged with
debris.
Airless Hose is too long (if
extra section was added).
Solution
Press PushPrime Button to
dislodge the ball allowing
pump to prime properly.
Turn Prime/Spray Valve down
to PRIME position until
material exits Drain Tube. The
pump is now primed.
Clean debris off inlet strainer
and make sure there is fluid in
Hopper.
Remove Inlet Valve. Clean ball
and seat. See Inlet Valve
Removal, page 26.
Unscrew outlet valve, remove,
and clean assembly.
Replace Prime/Spray Valve or
replace pump assembly. See
Parts, pages 30-33.
Rotate arrow-shaped handle
on Spray Tip so it points
forward to SPRAY position.
Increase pressure setting of
Pressure Control Knob.
Replace gasket and seal. See
page 17.
Clean debris off inlet strainer
and make sure there is fluid in
Hopper.
Replace extension cord. See
page 10.
Check for worn or
contaminated inlet valve or
outlet valve.
•
Prime sprayer.
•
Trigger Spray Gun
momentarily.
•
When trigger is released,
pump should cycle
momentarily and stop.
•
If pump continues to cycle,
pump valves may be worn
or contaminated with
debris.
•
Replace Inlet Valve or
Pump Assembly. See
Parts, pages 30-33.
Remove section of Airless
Hose.
3A7653D
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