What are the starter limitations for engine starting?

The correct answer outlines the specific starter limitations necessary to prevent overheating and ensure the longevity of the engine's starting system. When starting an engine, it is crucial to adhere to a controlled sequence of usage to avoid damaging the starter or the engine itself.

The guideline specified in the correct choice indicates that the starter can be engaged for a maximum of 40 seconds followed by a 60 seconds cooldown period for two sequential attempts. After these attempts, the starter can again be utilized for another 40 seconds, but then it requires a much longer cooldown period of 30 minutes before it can be used again. This structured approach protects the starter mechanism from overheating, which can occur if it is engaged for too long without sufficient cooling periods.

By understanding these limitations, one can ensure effective engine starting procedures that maintain the integrity of both the starter and the engine, facilitating reliable operation during crucial moments.