Using this Axisflying Black Bird V3 2125kv Motor is easy. First, make sure to connect it to a power source within the rated voltage of 4 - 6S. Then, use the 4 mounting screws provided to securely install the motor. When using it, avoid over - voltage as it can damage the motor. For maintenance, keep the motor clean and dry. If you notice any unusual noises or performance issues, stop using it immediately and check for possible problems.