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Priming
309225W 11
11.Submerge suction
tube in paint.
12.Turn power switch ON.
13.When paint starts to
come out of prime tube,
aim gun toward waste
pail, pull and hold gun
trigger and turn
Spray-Prime/Drain
valve to SPRAY.
14.When paint comes
out of gun, release
trigger.
15.Clip drain tube to suction tube.
Pump Check Valves
Storing pump in water, adequate flushing, or
ingested debris can cause either of the pump’s
two check valves to malfunction. Try to loosen
the check balls loose by tapping the inlet valve
with a small wrench. The sprayer should be on
and running.
Motor stopping indicates pump and hose
are primed with paint.
If the pump does not prime after 30 sec-
onds, Read Pump Check Valves, page 11.
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CAUTION
Excessive shock will fracture or cause other
damage to the pump.
To determine if the inlet valve ball is stick-
ing, unscrew inlet valve from pump and
check it. MAGNUM XR7 and XR9 sprayers
allow for inlet valve removal without remov-
ing suction tube.
If sprayer continues to cycle (motor and
pump run) after you release gun trigger,
the pump valves may be obstructed or
worn. If they are worn, valve repair kits are
available. Consult a Graco/MAGNUM
authorized service center.
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