Anode Location Bravo 3 - Regal 3760 Owner's Manual

ELECTROLYSIS PROTECTION

ANODE LOCATION BRAVO 3

Gimbal
Anodic
Block
Ventilation
Plate
Sacrificial zinc anodes are usually found on the outdrive
housing, trim cylinders or propshaft to protect softer
metals exposed to the water. Electrolysis attacks the least
noble metals first. Because zinc is a less noble metal, it
will decompose before other metals. Check these zinc
anodes periodically and have them replaced when they
are 50% eroded.
Zinc is also used to protect metal that is exposed to
saltwater. The salt causes a galvanic action that
decomposes metals.
MERCRUISER BRAVO 3
SACRIFICIAL
ANODES
ENGINE ALIGNMENT
Stern drives use a rubber splined hub to which the stern
drive driveshaft is attached. There is an alignment
specification between the engine and outdrive that needs
to checked periodically normally when the outdrive is
removed for service. A shaft is inserted in the transom
area and the alignment can be determined by the spline
Trim
image left on the tool. The engine mounts are then
Cylinders
adjusted to permit a spline image 360 degrees around the
alignment tool. This specification should be checked after
each 50 hours of operation or if the vessel has run aground
or hit a submerged object. Alignment should be checked
by a Regal dealer or marine professional since a special
tool and procedure is required.
Propshaft
90
Chapter 8