When adjusting the material retaining accuracy of the shearer, first measure the distance between the cutting edge and the material retaining plate with a steel ruler. Of course, it must be measured repeatedly. Then try to use the Shearer to cut a small piece of material and check whether the size is correct. If the dimensional tolerance remains within the specified range, the feeding shearing can be carried out; however, if the tolerance requirements are not met, the positioning distance shall be readjusted until the specified requirements are met. In addition, the longitudinal baffle of the shearer should be adjusted accordingly to make the longitudinal and transverse plates or knife edge at 90 degrees and be firmly fastened. After repeated adjustment, the back baffle can be used continuously for a long time.