22 309421
Basic Troubleshooting
The following troubleshooting guidelines from the
Operating Instructions
manual are included here as preemptive
measures against
Advanced Troubleshooting
on page 24.
PROBLEM
CAUSE
SOLUTION
Power switch is on and
sprayer is plugged in, but
motor does not run and pump
Pressure is set at zero
pressure.
Turn Pressure Control knob (C) clockwise to increase
pressure setting.
motor does not run, and pump
does not cycle.
Motor or control is damaged.
See
Motor Does Not Operate
on page 24.
does not cycle.
Electrical outlet is not
providing power.
D
Try a different outlet, or plug in something that you know is
working to test outlet.
D
Reset building circuit breaker, or replace fuse.
Extension cord is damaged.
Replace extension cord. See
Grounding and Electrical
Requirements
on page 4.
Sprayer electrical cord is
damaged.
Check for broken insulation or wires. Replace electrical cord if
damaged.
Paint is frozen or hardened in
pump.
See
Motor Does Not Operate
on page 24.
Pump does not prime.
Spray–Prime/Drain valve is in
SPRAY position.
Turn Spray–Prime/Drain valve (J) to PRIME/DRAIN position
(pointing down).
Inlet screen is clogged, or
suction tube is not immersed.
Clean debris off inlet screen (L), and make sure suction tube
(G) is at bottom of paint pail.
Balls in check valve are stuck,
or check valves are damaged.
Clean or replace check valves. See
Pump Service
on page
33.
Do not store in water.
Suction tube is leaking.
Tighten suction tube connection (K). Inspect for other cracks
or vacuum leaks.
Spray gun stopped spraying.
Spray tip is plugged.
Unplug spray tip.
Pump cycles but does not
b ild
Pump is not primed.
Prime pump.
p y
build up pressure.
Inlet screen is clogged, or
suction tube is not immersed.
Clean debris off inlet screen (L), and make sure suction tube
(G) is at bottom of paint pail.
Paint pail is empty.
Refill paint pail, and reprime sprayer.
Suction tube is leaking.
Tighten suction tube connection (K). Inspect for other cracks
or vacuum leaks.
Pump check valves are dirty
or damaged. (Usually only
one valve)
Clean or replace check valves. See
Pump Service
on page
33.
Spray–Prime/Drain valve is
worn or obstructed with debris
Check Spray–Prime/Drain valve for debris trapped on seat
and worn parts. Torque to 185 in-lb (21 N
S
m). Replace if parts
are worn.
Pump cycles, but paint only
dribbles or spurts when spray
gun is triggered
Pressure is set too low.
Slowly turn Pressure Control knob (C) clockwise to Increase
pressure setting to check if sprayer develops more pressure.
gun is triggered.
Spray tip is plugged.
Unplug spray tip.
Fluid filter is clogged.
Clean or replace fluid filter (E).
Spray gun fluid filter is
clogged.
Clean or replace spray gun fluid filter (V).
Spray pattern is inconsistent
or is leaving stripes.
Pressure is set too low.
Turn Pressure Control knob (C) clockwise to increase
pressure.
Spray tip is worn beyond
capability of sprayer.
Replace spray tip.
