Corrosion Control Anode; Battery Inspection - Mercury 200 OptiMax Manual

Corrosion Control Anode

Your outboard has corrosion control anodes at different locations.
An anode helps protect the outboard against galvanic corrosion by
sacrificing its metal to be slowly corroded 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.
The gearcase has three anodes. Two anodes are located on each
side of the gearcase, and a third is an anode plate installed
underneath the anti‑ventilation plate. If a trim tab should be
installed, this anode plate will be removed. Another anode is
installed on the bottom of the transom bracket assembly.
a
a - Corrosion control anodes (gearcase)
b - Corrosion control anode (transom bracket)

Battery Inspection

The battery should be inspected at periodic intervals to ensure
proper engine starting capability.
MAINTENANCE
b
62
or42-1