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Mercury 90 Operation Maintenance Installation Warranty Manual

Mercury 90
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Tube Ref
No.
Description Where Used Part No.
120
Corrosion Guard
External metal surfaces of the powerhead
and powerhead components.
92-802878 55
Battery Inspection
The battery should be inspected at periodic intervals to ensure proper engine
starting capability.
IMPORTANT: Read the safety and maintenance instructions which accompany
your battery.
1. Turn off the engine before servicing the battery.
2. Ensure the battery is secure against movement.
3. Battery cable terminals should be clean, tight, and correctly installed.
Positive to positive and negative to negative.
4. Ensure the battery is equipped with a nonconductive shield to prevent
accidental shorting of battery terminals.
Fuel System
!
WARNING
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.
IMPORTANT: Use an approved container to collect and store fuel. Wipe up
spilled fuel immediately. Material used to contain spilled fuel must be disposed
of in an approved receptacle.
Before servicing any part of the fuel system:
1. Stop engine and disconnect the battery.
2. Perform fuel system service in a well‑ventilated area.
3. Inspect any completed service work for sign of fuel leakage.
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.
FUEL FILTERS
Refer to the Inspection and Maintenance Schedule for the proper
maintenance interval.
MAINTENANCE
eng 71

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Mercury 90 Specifications

General IconGeneral
BrandMercury
Model90
CategoryOutboard Motor
LanguageEnglish

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