Graco Ultra MAX II 490 PC Pro Operation, Parts page 22

Operation
13. Turn pressure control knob to OFF and
turn ON/OFF switch to OFF position.
Disconnect power to sprayer.
14. Remove filter from gun and sprayer if
installed. Clean and inspect. Install filter.
See separate gun manual.
22
15. If flushing with water, flush again with
mineral spirits or Pump Armor to leave a
protective coating to prevent freezing or
corrosion.
16. Wipe sprayer, hose and gun with a rag
soaked in water or mineral spirits.
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