1, see whether the active pulley, passive pulley and tensioning pulley are in the same plane.

2, look at the deviation, if the deviation is too large, should be adjusted to the required range before installation.

3, first loosen the tensioning wheel or remove the variable-speed side of the disk, and then install the belt. If the new belt is too tight and difficult to unload, you can first remove a pulley, set or remove the belt and then install the pulley.