Always press the trim tab switches in short one
second bursts. If pressed too long, you can
(1)
overcompensate, and potentially lose control.
DO NOT try to correct the situation by pressing
the other upper trim tab switch. Instead, raise
the tab slightly by pressing the appropriate
lower half of the trim tab switch.
After stabilization of speed and direction, press
the upper half of the appropriate trim tab switch to
achieve a level side to side running attitude. Be sure
to press the correct trim tab switch to obtain the
desired result.
After pressing a trim tab switch, always wait and
allow time for the change in trim tab position to take
effect. DO NOT continue to press the trim tab switch
while awaiting trim tab reaction. By the time the
effect is noted, the trim tab will move too far and
thus overcompensate.
Figure E3: Trim Tab Switches
Before leaving the dock and utilizing the trim tabs,
ensure the trim tabs are in the full up position. Press
both lower halves of the trim tab switches and hold
(for approximately 10 seconds) until the tabs are full up. B. Induce Planing & Controlling Trim Angle
A. Control Listing
Trim tabs can also be used to facilitate faster planing
and allow better control of the running angle.
Wind, loading and many other factors can result in the
boat tilting or leaning towards one side while running.
This is called listing and can be negated using trim
tabs.
Before accelerating and trying to gain plane, press
both upper trim tab switches. This will cause both
trim tabs to move downward and force the bow down
when running. This can also be used when running
the boat with a heavy load aboard.
Pressing the lower port trim tab switch will move the
starboard trim tab upward. This will result in the port
bow of the boat being allowed to rise.
Moving the trim tabs downward will increase the lift
and the boat will achieve plane faster, or stay on
plane at a lower engine and boat speed.
Pressing the lower starboard trim tab switch will cause
the port trim tab to move upward and will result in the
starboard bow being allowed to rise.
After gaining plane and establishing cruising speed,
pressing both lower trim tab switches will cause both
trim tabs to move upward and will allow the bow
to rise. This should be used to adjust the running
attitude of the boat to decrease the drag at cruising
speed or above, or when running in a following sea.
Pressing the upper port trim tab switch will cause the
starboard trim tab to move downward and will force
the port bow downward.
Pressing the upper starboard trim tab switch will cause
the port trim tab to move downward and will force the
starboard bow downward.
When running at an engine speed that results in the
boat falling off plane or causes the boat to plane
inefficiently, lowering both tabs slightly (bow down)
will improve the running angle and improve operating
efficiency.
Always establish your intended heading and attain
desired cruising speed before trying to adjust running
attitude (using the trim tabs).
Optimum efficiency is obtained when operating at a
3
to 5 degree running angle. Utilizing too much “Bow
Down” trim tab can reduce operating efficiency and
Engines and Instrumentation - Section E
Owner’s Manual Page 52
| Categories | Four Winns Manuals, Four Winns SL-Series Manuals, Outboard Marine Corporation Manuals |
|---|---|
| Tags | Four Winns SL |
| Model Year | 2008 |
| Download File |
|
| Document Type | Owner's Manual |
| Language | English |
| Product Brand | Boats and Cruisers, Four Winns. For support contact your dealer at http://www.fourwinns.com/locate-dealer.aspx |
| Document File Type | |
| Publisher | fourwinns.com |
| Wikipedia's Page | Outboard Marine Corporation |
| Copyright | Attribution Non-commercial |
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