10X model
Remove the flashlight head by rotating it counterclockwise.
Use a 5/32" hex wrench (included with 10X), to remove the screw in the center of the spring at the base of the head.
Carefully separate the reflector from the head.
Replace the inoperative lamp with a new one.
Replace the reflector in the head and replace the Allen screw.
Attach the head to the flashlight body.
NOTE – For all models, avoid touching glass bulb. Oil from your hand will degrade the surface and affect the performance of your flashlight.