Galvanic Corrosion; Corrosion Prevention - Four winns Horizon Owner's Manual

B. Galvanic Corrosion
Galvanic corrosion results from a potential electrical dif-
ference existing between dissimilar metals immersed in
a conductive solution (e.g., salt water). If these metals
touch or are otherwise electrically connected, this po-
tential difference produces an electron flow between
them. The attack on the more active metal is usually
increased and the attack on the less active metal is de-
creased, as compared to when these metals are not
touching.
C. Corrosion Prevention
Anti-corrosion anodes are attached to the bottom of the
gimbal housing to prevent corrosion to your stern drive
and underwater parts. These anodes will be slowly
eroded away by galvanic action and require periodic in-
spection. Please refer to the section on “Anti-Corrosion
Anodes” in your engine manufacturer’s manual for ad-
ditional information. The engine manual is included in
the owner’s packet.
180/190/200 Horizon
Owner’s Manual
08/01
Section H
Page 5