What must an operator do for powered systems to operate properly?

For powered systems to operate properly, the operator must engage the function enable. This step is crucial because it activates the specific functions of the machinery, allowing the operator to control its movements and operations safely. Engaging the function enable ensures that the system recognizes the command inputs and responds accordingly. Without this action, the machinery may remain in a standby mode and will not respond to user commands, which is essential for safe and effective operation.

In contrast, deactivating safety locks could lead to dangerous situations by bypassing essential safety features designed to protect the operator and those nearby. Adjusting the height settings, while often necessary for specific tasks, does not inherently ensure that the machine will operate; it is a function that might still be inactive without engaging the function enable. Power cycling the unit may reset it, but it does not guarantee that the necessary functions will be operational without first enabling them. Therefore, engaging the function enable is a fundamental requirement for the safe operation of powered systems.