Service manual

90-898303
4-31
Water Sensing System
The system consists of a water separating fuel filter (port side powerhead) and
a sensing probe (bottom of filter).
Water Sensing System Function
1) The filter separates the accumulated water from the fuel.
2) A voltage is always present at sensing probe. When water reaches top of
probe it complete the circuit to ground.
3) The completed circuit activates the warning horn which intermittantly
sounds.
The system can be tested by disconnecting the TAN wire from sensor probe
and holding to a good engine ground connection for 10 seconds.
Notes
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