Precautions before using rivet nuts: 1. Confirm that the pull head model matches the rivet nut being used. 2. Ensure the intake pressure is between 4.9-6.9 MPa; insufficient intake pressure will reduce the power of the riveting, increase the tool's load, leading to accelerated wear or damage to the components. 3. Before the tool starts working, inject 1-2 drops of lubricant into the intake air port to lubricate the internal seals and air motor, ensuring the tool's performance and service life during operation.