When starting a TF-2, what must occur after pressing the glow plug engage?

When initiating the start-up sequence of a TF-2, pressing the glow plug engage is a crucial step that preheats the glow plugs, ensuring the engine can start efficiently, especially in colder conditions. Following this action, it is essential to press the starter switch. This step activates the starter motor, which cranks the engine and initiates combustion. Without engaging the starter switch after heating the glow plugs, the engine would not turn over, and the start process would fail.

While other actions, such as activating the generator or adjusting the throttle, may be part of the overall operation of the TF-2, they do not directly follow the glow plug engagement in the sequence necessary for a successful start. It's also important to check light indicators to ensure that the system is ready, but that does not immediately follow the glow plug engagement before the engine starts running. Therefore, pressing the starter switch is the appropriate next step in this sequence.