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SECTION - 1
Corrosion Protection
Mercury MerCruiser power packages are equipped with anodes to help protect them from galvanic
corrosion under moderate conditions. However, for severe conditions or if using a stainless steel
propeller, it is recommended that a Quicksilver Anti‑Corrosion Anode Kit and/or a MerCathode
System with 2 additional transom mounted anode assemblies be installed (some models have a
MerCathode System as standard equipment). A MerCathode Monitor also is available to allow the
operator to check the operation of the MerCathode System with the push of a button. (Refer to
Mercury Precision Parts Accessories Guide for part numbers.)
Boats that are connected to AC shore power require additional protection to prevent destructive
low voltage galvanic currents from passing through the shore power ground wire. A Quicksilver
Galvanic Isolator can be installed to block the passage of these currents while still providing a path
to ground for dangerous fault (shock) currents. (Refer to Mercury Precision Parts Accessories
Guide for part number.)
IMPORTANT: If AC shore power is not isolated from boat ground, the MerCathode System and
anodes may be unable to handle the increased galvanic corrosion potential.
Anti‑fouling Paint
IMPORTANT: Corrosion damage that results from the improper application of anti‑fouling paint
will not be covered by the limited warranty.
Painting Boat Hull or Boat Transom: Anti‑fouling paint may be applied to boat hull and boat
transom but you must observe the following precautions:
IMPORTANT: Do not paint anodes or pressure wash anodes or MerCathode System reference
electrode and anode, as this will render them ineffective as galvanic corrosion inhibitors.
90-899883183 DECEMBER 2007
IMPORTANT INFORMATION
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