Master the AG Mechanics CDE 2025 – Rev Up and Rule the Field!

The correct answer is A, 10 hours of operation. It is recommended to clean a single element air cleaner for small engines every 10 hours of operation to ensure that the engine receives a consistent flow of clean air. Regular cleaning helps prevent dirt and debris from clogging the filter, which can negatively impact engine performance. The other options (B, C, and D) suggest longer intervals between cleanings, which may result in a buildup of contaminants that could decrease the efficiency of the air filter and, consequently, the engine's performance.