With any spray gun to properly clean you have to take it apart. I put Acetone in the cup and spray it to clear out any paint residual. Then I take the gun apart and soak it in Acetone for a short time. Now it time to clean all the pieces. Or go to Harbor Freight when the cheap guns are on sale for $12.99, use them, toss them in the trash. I do this a lot when I spray Gelcoat.
Tom
