Sterndrive Surface Care - Mercury MerCruiser Owner's Manual

Do not power‑wash a sterndrive that has a MerCathode assembly. Doing so can damage
the coating on the reference wire of the MerCathode assembly and increase corrosion.

Sterndrive Surface Care

We recommend the following maintenance items to help keep your sterndrive
corrosion‑free:
• Maintain a complete paint covering on the sterndrive.
• Check the finish regularly. Prime and paint nicks and scratches using Mercury enamel
paint and touch up paint. Use only tin–based anti–fouling paint or its equivalent on or
near aluminum surfaces below the waterline.
• If bare metal is showing, apply 2 coats paint.
90-899883295 JUNE 2008
a
b
a - Reference electrode
c
e
f
g
Standard Bravo sterndrive
a - Sacrificial trim cylinder anode
b - Sacrificial anodic plate
c - Steering lever ground wire
d - Ground wire between the gimbal
ring and bell housing
b -
d
a
b
e -
f -
g -
Section 5 - Maintenance
21563
Anode plate
21083
Stainless steel hoses
Ground wire between the gimbal
housing and trim cylinder
Ground wire between the gimbal
ring and gimbal housing
Page 107