Begin by removing the battery cover from the back of the trimmer.

Remove the battery.

Remove the screws, then gently lift off the blade. A small piece of plastic should come off with the blade. There will be a spring revealed from under the blade, remove this as well.

Remove the screws from the sides of the battery compartment. Then, gently separate the two halves of the plastic cover.

Lay both halves of the trimmer out, and remove the switch from the inside of the white plastic cover.

Finally, remove the motor from the black plastic cover. If desired, this motor can be de-soldered from the red wire and re-purposed.