When is the correct time to use the stacker handbrake?

Using the stacker handbrake is essential for safety and stability, especially when parking or starting on an incline. Engaging the handbrake when the vehicle is parked ensures that it remains stationary, preventing any unintended movement that could pose risks to the operator and nearby personnel. This is crucial when on an uphill slope, as gravity can cause the stacker to roll back if the handbrake is not engaged.

In addition, setting the handbrake before starting the stacker can provide additional assurance that the vehicle remains secure while the operator adjusts controls or prepares for the next task. This practice is part of safe operational protocols that protect both the equipment and its operator.

Considering the other scenarios—moving downhill, driving at high speeds, or unloading the vehicle—while the handbrake's function is vital, the emphasis is particularly crucial during parking and starting uphill due to the added risk of losing control in those situations.