What role does cleaning play in the performance of an air-cooled engine?

Cleaning is essential for preventing overheating in an air-cooled engine. Air-cooled engines rely on external airflow to dissipate heat generated during operation. When dirt, debris, or oil accumulate on cooling fins and other surfaces, it can significantly obstruct airflow. This reduced airflow diminishes the engine's ability to cool itself effectively, leading to higher operating temperatures. If the temperature continues to rise unchecked, it can result in engine overheating, which may cause damage to various engine components.

Thus, regular cleaning of the engine's exterior, particularly the cooling fins, is crucial to maintain optimal airflow and ensure that heat is transferred away from the engine efficiently, ultimately preventing overheating.