MAINTENANCE
eng 79
Description Nm lb‑in. lb‑ft
Spark plug 27 – 20
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.
Charging System Fusible Link
This model has a 100 amp fusible link between the alternator and the +12 volt
stud. This fusible link protects the alternator from damage due to accidental
reverse battery connection. If the battery cables are reversed, the fusible link
creates an open circuit, protecting the alternator. With the fusible link open, the
engine can be started; however, the run time is limited, because the alternator
is not charging the boat battery. If the fusible link circuit becomes open, contact
your authorized Mercury Marine dealer.
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