Unscrew the needle chucking nut and set aside.
Carefully remove the needle and wipe clean with cleaning solution and a paper towel. Look for any bending on the tip of the needle, then set aside.
Carefully replace the needle.
Screw on the needle chucking nut
Screw on the handle assembly.
Congratulations! You've cleaned your airbrush! Now, add some water in the color cup and do a test spray to make sure the brush is operating properly.