Basic Troubleshooting
309477F 9
Basic Troubleshooting
The following troubleshooting guidelines are included here as preemptive measures against Advanced
Troubleshooting, page 11.
Problem Cause Solution
Power switch is on and sprayer
is plugged in, but motor does
not run and pump does not
cycle
Pressure is set at zero
pressure
Turn pressure control knob counterclockwise to
increase pressure setting.
Motor control is damaged See Motor Does Not Operate, page 11.
Electrical outlet is not providing
power
• Try a different outlet or plug in something that
you know is working to test outlet
• Reset building circuit breaker or replace fuse
Extension cord is damaged Replace extension cord. See Grounding and
Electrical Requirements, page 7.
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, page 11.
Pump does not prime Spray-PRIME valve is in
SPRAY position
Turn Prime/Spray valve to PRIME position
(pointing down).
Inlet screen is clogged or
suction tube is not immersed
Clean debris off inlet screen and make sure
suction tube 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, page 20. Do not store in water.
Suction tube is leaking Tighten suction tube connection. Inspect for other
cracks or vacuum leaks.
Spray gun stopped spraying Spray tip is plugged Unplug spray tip. Manual 309097.
Pump cycles but does not build
up pressure
Pump is not primed Prime pump.
Inlet screen is clogged or
suction tube is not immersed
Clean debris off inlet screen and make sure
suction tube is at bottom of paint pail.
Paint pail is empty Refill paint pail and reprime sprayer.
Suction tube is leaking Tighten suction tube connection. 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, page 20.
Prime/Spray valve is worn or
obstructed with debris
Check Prime/Spray valve for debris trapped on
seat and worn parts. Torque to 21 N·m (185 in-lb).
Pump cycles but paint only
dribbles or spurts when spray
gun is triggered
Pressure is set too low Slowly turn pressure control knob clockwise to
increase pressure setting. Sprayer should develop
more pressure.
Spray tip is plugged Unplug spray tip. Manual 309097.
InstaClean fluid filter is clogged
(XR9 only)
Clean or replace InstaClean fluid filter.
Spray gun fluid filter is clogged Clean or replace spray gun fluid filter.