What is the first step in filling the foam tank using the dome method?

The first step in filling the foam tank using the dome method is to ensure that the vehicle is parked on a level surface. This is crucial because a level surface allows for an accurate fill without the risk of the foam concentrate spilling or being unevenly distributed within the tank. If the vehicle is not level, it can lead to complications such as inaccurate gauging of the fill level and potential overfilling in certain areas of the tank. Once this foundational step is completed, you can proceed with the other processes, such as connecting hoses or pouring concentrate, effectively and safely.