What should you do if a safety guard on a machine is missing?

If a safety guard on a machine is missing, it is essential to inform a staff member and refrain from using the machine. Safety guards are critical components designed to protect users from potential hazards associated with the machine's operation. Their absence increases the risk of injury significantly, as safety guards often prevent access to dangerous moving parts or mitigate the effects of malfunctioning machinery.

Notifying a staff member ensures that the issue is addressed promptly, as only qualified personnel should make repairs or adjustments to the machinery. This action helps maintain a safe working environment for everyone and adheres to safety protocols that prioritize user protection. Using the machine without its safety features compromises the safety of the operator and anyone nearby, which is why the other choices are not appropriate responses.