Using the Greenlee KWSET Keyway Punch Assembly is easy. First, make sure you have a Greenlee hydraulic driver ready. Select the appropriate notch (either 1/8' or 3/16') according to the size of the hole you need to notch. Place the assembly in the pre - punched hole and use the hydraulic driver to operate it. It will quickly create the keyway for you. When using it, always wear safety goggles to protect your eyes from any metal chips. Keep your hands away from the punching area during operation. For maintenance, after each use, clean the assembly with a dry cloth to remove any metal shavings. Store it in a dry place to prevent rusting. If you notice any signs of wear or damage, replace the assembly to ensure safe and efficient operation.