Everglades 285 CC - Standard Trim Tabs

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Helm Control Systems
4.8 Standard Trim Tabs
The recessed trim tabs are mounted to the hull
below the swim platform and integrated transom
engine mounting system. A dual rocker switch is
used to control the trim tabs. The switch controls
bow up and down movements. It also controls
starboard and port up and down movements.
Bow up and bow down will control the hull planing
attitude, while port and starboard up and down
provides control for the hull listing.
A LED indicator built into the switch displays the
position of the trim tabs. When one LED is ash-
ing at the top of the display, the tabs are in the
“full-up” (bow up) position. When all LED lights
are lit from the top to the bottom of the display,
the tabs are fully extended (bow down).
The trim tabs are programmed to automatically
retract when the engines are shutdown to keep
the actuators clean and set the tabs in the full
“UP” position when leaving the dock. Refer to
the trim tab operating manual for more informa-
tion on the operation and programming of the
trim tabs.
Before leaving the dock, make sure that the tabs
are in the full “UP” position. If they are not, press
and hold the control in the bow up position for
ten (10) seconds to fully retract the tabs.
Always establish the intended heading and cruise
speed before attempting to adjust the hull atti-
tude with the trim tabs. After stabilizing speed
and direction, move the trim tabs to achieve a
level side to side running attitude being careful
not to over trim.
After depressing a trim tab switch, always wait a
few seconds for the change in the trim plane to
take eect. Avoid depressing the switch while
awaiting the trim plane reaction. By the time
the eect is noticeable the trim tab plane will
have moved too far and thus the boat will be in
an overcompensated position.
When running at a speed that will result in the
boat falling o plane, lowering the tabs slightly,
bow down, will improve the running angle and
operating eciency. Too much bow down tabs
can reduce operating eciency and cause sub-
stantial steering and handling diculties.
Be extremely careful when operating in a fol-
lowing sea. The eect of trim tabs is amplied
under such conditions. Steering and handling
diculties can result from improper trim tab
usage, particularly in a following sea. Always
raise the tabs to the full bow up position in these
conditions.
When running at high speeds be sure that the
tabs are in the full “UP” position. Only enough
trim plane action should be used to compensate
for any listing. Trim tabs are extremely sensitive
at high speeds. Adjust for this and be prepared
to slow down if diculties arise.
When running into a chop, a slight bow down
attitude will improve the ride. Be careful not to
over trim. Handling diculties may result.
Typical Trim Tab Actuator
Typical Trim Tab Switches