Mercury 135 Verado Manual page 115

FUEL LINE INSPECTION
Visually inspect the fuel line for cracks, swelling, leaks, hardness,
or other signs of deterioration or damage. If any of these conditions
are found, the fuel line must be replaced.
WATER SEPARATING FUEL FILTER
NOTE: The warning system will turn on when water in the fuel filter
reaches the full level.
This filter removes moisture and debris from the fuel. If the filter
holder becomes filled with water, the water can be removed. If the
filter becomes plugged with debris, replace the filter.
Refer to the Inspection and Maintenance Schedule for the proper
maintenance interval.
Filter Removal
1. Turn ignition key switch to "OFF" position.
2. Remove fuel vapor purge relief valve cap located at the rear
of the engine.
Failure to release pressure from the fuel system will result in
fuel spraying out, which can cause a fire or explosion. Allow the
engine to cool completely and release all fuel pressure before
servicing any part of the fuel system. Always protect eyes and
skin from pressurized fuel and vapors.
MAINTENANCE
CAUTION
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