Water-In-Fuel Warning System
The fuel injection system includes a water and sediment filter in addition to the sealed cartridge filter. See Fig 1. This unit traps water which may be present in the fuel system and holds it, preventing damage to the injection pump.
A warning light or buzzer signals when the water level is high enough to require draining. A float is lifted by the water level, causing a magnetic switch to close and provide continuity to the warning light or buzzer circuit. A small hand pump is provided so the water separator and filter can be purged of air.