Things You'll Need
Instructions
Remove the screw on the base of the train. Depending on the model, there may be two screws.
Unscrew the screws holding the wheels in place.
Pull the base off the bottom of the train. Gently grab the top of the train and pull it from the bottom section.
Place the tip of the needle-nose pliers around the round, metal gear. Slide it back into the area that is the shape of the gear.
Reattach the wheels and the rest of the train.