Graco Ultra MAX II 490 PC Pro Operation, Parts page 14

Setup
4. Engage trigger lock.
5. Remove tip guard.
6. When unpacking sprayer for the first
time remove packaging materials from
inlet strainer. After long term storage
check inlet strainer for clogs and debris.
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7. Fill throat packing nut with TSL to
prevent premature packing wear. Do this
daily or each time you spray.
a. Place the TSL bottle nozzle into the
top center opening in the grill at the
front of the sprayer.
b. Squeeze bottle to dispense enough
TSL to fill the space between the
pump rod and packing nut seal.
8. Make certain ON/OFF switch is OFF.
9. Plug power supply cord into a properly
grounded electrical outlet.
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