Using these carbon motor brushes in your Ariston or Indesit washing machine is a breeze. First, make sure your washing machine is unplugged to avoid any electrical hazards. Then, locate the old brushes in the machine. Remove the old ones carefully and replace them with these new brushes, ensuring the correct orientation as per the brush holder design. As for maintenance, it's a good idea to check the brushes every few months. Look for signs of excessive wear, like short brush length or frayed terminals. If you notice erratic spinning or no spin at all, that's a clear sign the brushes might need replacement. When storing these brushes, keep them in a dry place away from moisture and direct sunlight to maintain their quality. Remember, these brushes come with a full guarantee, so if you have any issues, you're covered.