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Operation Basics
10 311320G
Air Cap Adjustment Valve
Use to control amount of air that passes
through air cap and over mixing chamber tip.
Airflow helps keep tip free of sprayed chemical.
Too much air may distort spray pattern and
create overspread. Too little air will not prop-
erly clean end of valving rod.
To OPEN valve, turn knob approximately 1/8
turn counterclockwise.
To CLOSE valve, turn knob fully clockwise.
FIG. 7: Air Valve Adjustment
Felt Wiper
Adjust Felt Wiper
1. Use 5/16 in. open-end wrench to loosen
retainer slightly.
2. Slowly tighten it by hand until it seats
against rear packings in mixing chamber.
3. Use 5/16 in. open-end wrench to tighten
retainer another half turn.
FIG. 8: Felt Wiper
Clean Felt Wiper
1. Insert nozzle of flush can into holes of felt
wiper.
2. Saturate felt with gun cleaner.
Open
Close