There are no cracks and damage to saw blades, cases, and handles.

Cable soft cables and plugs are intact, and the switching movements are normal, and zero -connecting connections are correct, firm and reliable.

Whether the saw blade is installed firmly, whether the bolt is tightened, and whether the inner and outer mounts are clamped tightly. Whether the plane of the saw blade is perpendicular to the horizontal axis of the wire.

Check whether the rotation of the protective cover is flexible, whether there is deformation, whether it will be rubbed with the round saw sheet, whether the connection is reliable, and whether it will fall off during the operation.

Check whether the side handle is reliable and whether it will loosen when holding operations.

Check whether the cutting workpiece is firmly fixed.