How to Change the Blades on a Wahl Trimmer
- 1). Turn off the trimmer, then unplug it from the wall.
- 2). Remove the two screws on the back of the top blade, using a screwdriver.
- 3). Lift the top blade off the trimmer, then lift off the bottom blade.
- 4). Place the new bottom blade onto the trimmer, inserting the mounting post into the center hole of the bottom of the blade.
- 5). Align the screw holes on the bottom new top blade with the screw holes on the trimmer.
- 6). Secure the blade, using the two screws.
Source...