Using this hub adapter is simple. First, align the 1.5' hub pattern parts you want to connect. Then, use the alternating tapped and untapped holes to secure the parts together. When mating hubs to gears, sprockets, or wheels, make sure the parts fit well before tightening. As for maintenance, keep the adapter clean and free of dirt and debris. If it gets dirty, you can use a soft cloth to wipe it down. Store it in a dry place to prevent rusting. Also, handle it gently to avoid any damage to the holes or the adapter itself.