KIT-SEAL 1933096 - Caterpillar

Fuel leaked or spilled onto hot surfaces or electrical components can cause a fire. To help prevent possible injury, turn the start switch off when changing fuel filters or water separator elements. Clean up fuel spills immediately.
The water separator is not a filter. The water separator separates water from the fuel. The engine should never be allowed to run with the water separator more than half full. Engine damage may result.
Illustration 1 g01355190
(1) Filter
(2) Drain
Open the drain valve (2) and allow the fluid to drain into a suitable container.
Close the drain valve (2). Dispose of the drained fluid in a safe place.
The water separator is under suction during normal engine operation. Ensure that the drain valve is tightened securely to help prevent air from entering the fuel system.