Section 4 - Maintenance
90-8M0113857 eng DECEMBER 2015 Page 61
20. Insert the dust cover in the flush socket on the engine.
Dust cover installed in the flush socket
a - Dust cover
b - Flush socket
IMPORTANT: If the unit is to be stored in the water, the seacock should remain closed until time of usage. If unit is to be
stored out of the water, open the seacock.
21. Open the seacock, if equipped, or reconnect the alternative water inlet source prior to operating the engine.
Battery
Refer to specific instructions and warnings accompanying your battery. If this information is not available, observe the following
precautions when handling a battery.
!
WARNING
Recharging a weak battery in the boat, or using jumper cables and a booster battery to start the engine, can cause serious
injury or product damage from fire or explosion. Remove the battery from the boat and recharge in a ventilated area away
from sparks or flames.
!
WARNING
An operating or charging battery produces gas that can ignite and explode, spraying out sulfuric acid, which can cause
severe burns. Ventilate the area around the battery and wear protective equipment when handling or servicing batteries.
Corrosion Protection
Corrosion Information
Whenever two or more dissimilar metals are submerged in a conductive solution, such as saltwater, polluted water or water
with a high mineral content, a chemical reaction takes place causing electrical current to flow between metals. The electrical
current flow causes the metal that is most chemically active, or anodic, to erode. This is known as galvanic corrosion. For more
information contact your authorized Mercury MerCruiser dealer.
Maintaining Ground Circuit Continuity
The transom assembly and sterndrive are equipped with a ground wire circuit to ensure good electrical continuity between the
engine, transom assembly, and sterndrive components. Good continuity is essential for the MerCathode System to function
effectively.
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