Sprayer starts up but does
not draw in paint.
Unit will not prime or has lost
prime
No paint. Suction tube
not totally immersed in paint
Immerse suction tube in paint
Suction set filter clogged.
Suction tube loose at inlet valve
Clean connection and tighten
Clean inlet valve. Be sure the ball
seat is not nicked or worn and that
ball seats well, Reassemble valve.
Piston rod worn or damaged.
Pump cycles but does not
build up pressure.
Inlet screen is clogged .
Clean debris off inlet screen and
make sure suction tube is immersed
in fluid.
Suction tube is not immersed in
paint.
Make sure suction tube is immersed
in paint.
Tighten suction tube connection.
Inspect for cracks or vacuum leaks. If
cracked or damaged, replace suction
tube.
Prime/Spray Valve is worn or
obstructed with debris.
Clean the valve or replace a new one.
Pump cycles, but paint only
dribbles or spurts when
spray gun is triggered.
Slowly turn Pressure Control Knob
clockwise to increase pressure
setting which will turn motor on to
build pressure.
O-ring in pump is worn or
damaged
Inlet valve ball is packed with
material
Clean or replace fluid filter
Spray gun fluid filter is clogged.
Clean or replace gun fluid filter,
Spray tip is too large or worn.