How do I safely replace the needle on the XH2149-001?

Always turn off the machine before changing the needle to avoid injury if the foot controller is accidentally pressed. Insert the needle with the flat side toward the back of the machine until it touches the stopper, then securely tighten the needle clamp screw with a screwdriver. Before replacing the needle, place fabric or paper under the presser foot to prevent the needle from falling into the hole in the needle plate.