The change of the miter saw blade first require some general safety precautions. The saw needs to be turned off and unplugged. Before working on any power tool, ensure that it is impossible for the tool to turn on. As it is always dangerous to handle a blade, just stay focused on the task that needs to be completed.First, the blade guard has to be bypassed, so slightly slide up the guard to gain access to the screw holding the miter saw to the guard. Release the screw to slide further backward the blade guard.