In order to safe operations need to pay attention to the following points: 1, saw the weight to control the cutting pressure. This weight is enough for softer materials. Too much pressure can reduce the speed of the saw blade. For harder materials, the speed of rotation of the saw blade can be reduced by pressure. The cutting is to keep the saws straight. Any distortion or skewed blade may reduce the service life of 2, turn off the power when the release valve. 3, replacing the saw blade before, be sure to disconnect the power supply. 4, clockwise adjust the handle to release the tension on the saw blade guide rod. Then release the lock of the side panel so as to open the side panel. Then remove the blade from the drive wheel and release it from the sawing guide rod. 5, before the start of the next cut, the blade must keep moving. When an electric saw is used, a saw can not contact any surface. 6, what's needed to cut materials. 7, to ensure that the firmly required cutting material, to prevent the mobile. 8, when connecting the power press with your fingers and began cutting stem. 9, disconnect the power supply when the power off valve hose. Before disconnecting, open the power valve and decompress the hose.