When disengaging the fire pump, the driver/operator should first:

When disengaging the fire pump, the proper first step is to reduce the throttle to idle speed. This practice is crucial for a couple of reasons. First, lowering the throttle to idle allows the engine speed to decrease gradually, which helps to prevent any sudden changes in pressure within the pump and the connected hoses. A sudden drop in engine speed while the pump is under load could lead to a surge of water or even potential damage to the system.

Additionally, reducing the throttle to idle creates a stable environment for the subsequent actions of shutting off the main valve, disconnecting hoses, or notifying the crew. By ensuring that the pump is not operating at full speed, the driver/operator can safely manage the flow of water and transition to the next steps more effectively. This controlled disengagement ensures the safety of both the equipment and the crew.