What does the stacker safety label on the left warn?

The correct answer is that the stacker safety label on the left warns against overloading the equipment. Safety labels are crucial for informing operators about the risks associated with improper use. Loading the stacker beyond its capacity can lead to tipping hazards, loss of control, and potential accidents that can harm both the operator and surrounding personnel. Therefore, understanding and adhering to the warning regarding load capacity is essential for safe operation. This label serves as a reminder to check the maximum load limits to ensure the stacker's stability and safety while in use.