Fuel System - Mercury 10 EFI FourStroke Installation, Operation & Maintenance Manual

Fuel System

FUEL SYSTEM PRECAUTIONS
Fuel is flammable and explosive. Ensure that the key switch is off and the
lanyard is positioned so that the engine cannot start. Do not smoke or allow
sources of spark or open flame in the area while servicing. Keep the work
area well ventilated and avoid prolonged exposure to vapors. Always check
for leaks before attempting to start the engine, and wipe up any spilled fuel
immediately.
Before servicing any part of the fuel system, stop the engine and disconnect
the battery. Drain the fuel system completely. Use an approved container to
collect and store fuel. Wipe up any spillage immediately. Material used to
contain spillage must be disposed of in an approved receptacle. Any fuel
system service must be performed in a well ventilated area. Inspect any
completed service work for sign of fuel leakage.
FUEL LINE INSPECTION
Visually inspect the fuel line and primer bulb for cracks, swelling, leaks,
hardness, or other signs of deterioration or damage. If any of these conditions
are found, the fuel line or primer bulb must be replaced.
DRAINING WATER FROM THE FUEL FILTER
Check the fuel filter for water accumulation or sediment. If water is in the fuel,
drain the filter into an appropriate container. If the filter appears to be
contaminated, remove and replace.
1. Read Fuel System Precautions, preceding.
2. Inspect the water‑separating fuel filter. If water is present, the red ring
inside the filter assembly should float at the water level.
MAINTENANCE
WARNING
!
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