Which portion of the semi-monthly inspection is optional?

The semi-monthly inspection is designed to ensure that all essential systems of the equipment are functioning properly and that the operational readiness is maintained. Among the options, the engine start is considered optional because it may not always be necessary to start the engine during every inspection cycle. The primary focus during a semi-monthly inspection is to visually check critical components, fluid levels, and other parameters that indicate how well the equipment has been maintained.

Performing an engine start could be deemed impractical or unnecessary if the inspection is more focused on assessing fluid levels, which are crucial for stable operation, such as the fuel and oil levels. Similarly, checking battery voltage is important to ensure that the electrical system is in good condition and can support engine startup when needed.

Thus, the engine start, while a good practice, does not need to be a part of every inspection session, making it the optional component in this practice.