How to Clean a Spray Painter Gun

Pour the unused paint back into its container. If you had to thin the paint, put it in a paint-safe container and label it for future reference.

Add a small amount of paint thinner or appropriate solvent for the paint you used in the HVLP gun to the empty paint cup. Spray all the contents of the paint cup against a piece of scrap lumber or cardboard to further thin the paint that remains in the spray paint gun.

Remove the air cap. Soak it in a small amount of paint thinner for a couple of minutes. Brush the paint from the threads with a plastic-bristle brush.

Use the wrench that comes with the spray paint gun to take off the nozzle. Do not bump or mar the nozzle or the needle. If you do, the spray gun may not work properly the next time you use it. Soak the nozzle in thinner, and then use the brush to clean the threads.

Take the paint cup off with the wrench. Remove the filter cartridge. If it doesn't come clean, replace it. Soak the cup and clean it with thinner.

Insert a bottle brush into the opening on the nozzle for the paint cap and the air cap. Thoroughly clean the inside of the nozzle.

Rinse all the pieces in clean thinner. Allow them to air dry, or you can use an air compressor to speed up the process. Wipe everything with clean paper towels to be sure it's dry. Reassemble the spray gun so it's ready for its next use.