Using this product is quite easy. First, make sure your kart has a 30mm axle as this sprocket hub is designed for it. Then, carefully install the hub on the axle, aligning the keyway slots (either 6mm or 8mm wide depending on your needs). When it comes to maintenance, regularly check for any signs of wear and tear on the sprocket and the keyway slots. If you notice any issues, replace the parts promptly. Also, keep the hub clean to ensure smooth operation. Remember, it's mainly for Cadet karts when you want to use a Briggs LO206 engine, so make sure your kart setup matches these requirements.