How do you change transmission fluid in a 2006 1200 Harley Sportster?

To change the Transmission Fluid in a 2006 Harley Sportster 1200, first ensure the bike is on a level surface and warm the engine slightly. Remove the transmission fluid drain plug located at the bottom of the transmission and let the old fluid drain completely. Replace the drain plug and refill the transmission with fresh fluid through the fill plug on the side, using the recommended type of transmission fluid. Finally, check the fluid level to ensure it's at the correct height and secure the fill plug.