Corrosion Control Anode - Mercury Sea Pro User Manual

a - Good fuse

Corrosion Control Anode

The outboard has corrosion control anodes at different locations. An anode helps protect the outboard against
galvanic corrosion by sacrificing its metal to be slowly eroded instead of the outboard metals.
Each anode requires periodic inspection, especially in salt water which will accelerate the erosion. To maintain
this corrosion protection, always replace the anode before it is completely eroded. Never paint or apply a protective
coating on the anode as this will reduce effectiveness of the anode.
One anode is installed on the bottom of the transom bracket assembly. The trim tab is also an anode on the
87.3 mm (3 - 7/16 in.) diameter gearcase. The 108mm (4 - 1/4 in.) diameter gearcase has three anodes. One of
the anodes is the trim tab, and the other two anodes are located on each side of the gearcase.
b
a - Transom bracket anode
b - Trim Tab
MAINTENANCE
a
c
b
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b - Broken band
c - Anode on each side of gearcase
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a