4848
Helm Control Systems
Engine Lubrication
Refer to the engine owner’s manual for mainte-
nance and lubrication instructions for the outboard
engine.
Trim Tab Maintenance
The trim tab actuators are electric and require no
routine maintenance except to periodically inspect
the tab actuators for corrosion or marine growth
and test the system to ensure that it is operating
properly.
Marine growth can interfere with the proper op-
eration of the trim tab planes and actuators. To
reduce problems due to marine growth, always
return the trim tabs to the full “UP” position af-
ter operating the boat and periodically inspect
and clean marine growth from the actuators and
planes. If your boat is equipped with the optional
LED trim indicator switch, the switch is wired so
the trim tabs automatically retract to the “full-up”
position when the ignition switch is turned o.
If the boat is kept in the water, the trim tabs
must be equipped with a zinc anode to prevent
galvanic corrosion. Galvanic corrosion is the cor-
rosion process occurring when dierent metals
are submerged in an electrolyte. Seawater is an
electrolyte and submerged metal components
must be properly protected. The anodes will need
to be changed when they are 75% of their original
size. Refer to the Routine Maintenance chapter of
this manual for information on maintaining zinc
anodes.
To discourage any marine growth on tab or actua-
tor, antifouling paint can be applied. When ap-
plying paint to the actuator, make sure it is fully
retracted. Do not paint the stainless ram above
the area that is exposed when retracted. The
bottom paint will damage the O-ring seals when
the ram is retracted and allow seawater to enter
the actuator motor. Contact your dealer or the
trim tab manufacturer for information regarding
the correct bottom paint for the trim tabs.
Refer to the trim tab owner’s manual for additional
maintenance information, specications, trouble-
shooting and operating instructions.
Jack Plate Maintenance
Keep hydraulic pump connection terminals coated
with dielectric grease to prevent any connections
from being corroded as required. Grease the jack
plate at the grease ttings once or twice every
6 months. Inspect hydraulic ttings and seals
around the cylinder and pump for corrosion or
leaking. Service if leaking or corrosion occurs.
The hydraulic uid level should be checked often.
The uid level should be checked with the jack
plate in the full down position and you should be
careful not to overll the reservoir. Always refer
to the jack plate owner’s manual for maintenance
information, specications and operating instruc-
tions for the jack plate installed on your boat.
Typical Trim Tab Cylinder & Plane
Typical Hydraulic Jack Plate
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