What should be done immediately following a maximum attempt in dry motoring?

Following a maximum attempt in dry motoring, enforcing a cool-down period is essential to allow the engine components to reduce their temperature and prevent damage. Dry motoring, which refers to the act of cranking the engine without it firing, can lead to overheating since the starter motor and other components are engaged without proper operation and cooling.

Implementing a cool-down period allows the various components to stabilize, thus reducing the risk of thermal-related ruptures or failures. It also provides a chance to assess the system's condition before initiating any further attempts.

The other options, while they may hold some merit in different contexts, are not the immediate priorities. Starting a new sequence right away may lead to further overheating. Checking for system leaks is important, but it presupposes that the engine can be safely operated without a cooldown. Consulting the manual can provide valuable information, but that advice needs to come after ensuring the system has had the necessary recovery time. Therefore, prioritizing a cool-down period is the most appropriate action after a maximum attempt in dry motoring.