In this how-to video, you will learn how to remove a crank arm with a square taper on a bicycle. You will need a crank puller. You will also need two sockets (14mm and 9/16"), a quarter, a socket wrench, and a screwdriver. Use the quarter as a screwdriver to pull off the cover. You can use the screwdriver in case that does not work. Take the 14mm socket, place it in the socket wrench, and twist off the bolt. Take the crank puller and screw it on one end. Twist the lever until the crank is loose. Once this happens, you should be able to remove the crank. This video is useful if you need to learn how to remove the crank arm with a square taper quickly and properly.