Magnum 257060 Operation page 29

Problem
Pump cycles but does not build up
pressure.
Pump cycles, but paint only dribbles
or spurts when spray gun is trig-
gered.
313034G
Cause
Pump is not primed.
Inlet screen is clogged .
Suction tube is not immersed in paint. Make sure suction tube is immersed
Suction tube is leaking.
Prime/Spray Valve is worn or
obstructed with debris.
Pump check ball is stuck.
Pressure is set too low.
Spray tip is clogged.
InstaClean fluid filter is clogged.
Spray gun fluid filter is clogged.
Spray tip is too large or worn.
Solution
Prime pump.
Clean debris off inlet screen and
make sure suction tube is immersed
in fluid.
in paint.
Tighten suction tube connection.
Inspect for cracks or vacuum leaks. If
cracked or damaged, replace suction
tube.
Take sprayer to Graco/M
authorized service center.
Read Pump does not prime section
in Troubleshooting, page 28.
Slowly turn Pressure Control Knob
clockwise to increase pressure set-
ting which will turn motor on to build
pressure.
Unclog spray tip, page 14.
Clean or replace InstaClean fluid fil-
ter, page 22.
Clean or replace gun fluid filter, page
22.
Replace tip.
TM
Troubleshooting
AGNUM
29