What does the black button on the console control in the boat?

The black button on the console is designed to control the transmission on the engine, allowing the drive system to be flushed. This function is essential for maintaining the health of the engine and drivetrain components. Flushing the drive system typically involves circulating fluids to remove debris, sediment, or contaminants that can accumulate during normal operation.

By having a specific control for this function, operators can ensure that they are able to keep the engine and drive system functioning smoothly and efficiently. Regular flushing can help extend the life of the engine parts and improve overall performance, making this feature a critical aspect of boat maintenance and operation.

The other options relate to different functionalities commonly found in boat operation but do not pertain to the black button's purpose. Consequently, understanding the flush function gives insight into maintaining and preparing the boat for optimal performance.