Adjust the Air Pressure

• Thoroughly read the manufacturer's instructions for your particular brand of spray gun and air compressor. Adjust the air compressor to the setting recommended by the spray gun's instructions. Setting the air compressor to a setting that is too high can damage your spray gun, while too low of a pressure will apply too much paint onto the surface you are covering, resulting in drips or preventing the paint from leaving the gun.
  
  

Adjust the Air Pressure Regulator

• If you aren't getting the finish you want from your spray gun, try adjusting the air pressure regulator. The air pressure regulator adjusts the air pressure that is entering the spray gun. This is a different setting than the air compressor. The adjustment knob is located between the air compressor tube and the spray gun. Turn the knob clockwise to increase the pressure of the air going into the air gun. A higher pressure setting will give you a smoother finish because it applies smaller droplets of paint onto the surface. Consequently, it also causes a greater over-spray.
  
  

Paint Volume Adjustment

• The paint volume adjustment knob is located on the top back portion of the spray gun. If you find that the spray is too thick, turn this knob clockwise to reduce the amount of paint flowing from the cup into the gun. If you find that the spray is too thin or weak, turn the knob counterclockwise to increase the amount of paint flowing into the gun.
  
  

Fan Adjustment

• If your spray shape isn't looking the way you want it, you likely need to adjust the spray gun's fan. This control is located on the side of spray gun's body. If you turn the fan control clockwise (in the "off" position) the spray will be completely rounded. Turning the fan control counterclockwise ("on") will flatten the spray stream to create an oval shape, which allows you to cover area more quickly.