In which situation would you not use an elevated fork on a stacker?

Using an elevated fork on a stacker can be risky in various situations, particularly when the ground is uneven. When operating equipment like stackers on uneven surfaces, there is a higher likelihood of instability, which can lead to accidents or tipping. Keeping the forks elevated while navigating such terrain can severely compromise safety, as the center of gravity is altered and the truck may not maintain its balance.

In contrast, loading items onto a shelf generally requires the forks to be elevated, and similarly, driving on a straight path or picking up items from a flat surface are situations where it is typically safe and necessary to use the elevated fork. Each of these scenarios allows for better control and stability of the load when the equipment is used properly. Thus, avoiding elevation on an uneven surface prioritizes safety and proper operation of the stacker.