Mercury 90 - Page 46

MAINTENANCE
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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 two corrosion control anodes, one on each side. A third anode is installed on the bottom of the
transom bracket assembly.
ob00677
a
b
a - Anode (2) on each side of gearcase b - Anode on transom bracket assembly
NOTE: Do not remove center bolt until cover has been removed from engine.
Three anodes are installed in the engine. Remove anodes at locations shown. Install each anode with rubber seal
and cover. Tighten bolts to specifications.8 Nm (70 lb. in.) torque.
ob00678
a
b
c
d
a
a - Center bolt
b - Cover
c - Anodes
d - Rubber seal
Description Nm lb. in. lb. ft.
Bolts 8 70