S2.5 Allen key
Before replacing the X-axis belt, ensure the device is turned off and disconnect the power for safety.
① Rotate the red knob on the X-axis belt tensioner counterclockwise and remove it, placing it aside for later installation.
② Use the S2.5 Allen key to unscrew the 2 screws securing the X-axis belt tensioner and remove the outer casing.
③ Disconnect the wires from the left X-axis limit switch, marked with a "X."
④ Use the S2.5 Allen key to unscrew the 1 screw securing the X-axis limit cover and remove it.