48
Helm Control Systems
DANGER
SOME JOYSTICKS AND ELECTRONIC CONTROL SYSTEMS
ARE EQUIPPED WITH A FEATURE WHICH USES THE ENGINES
TO AUTOMATICALLY HOLD THE BOAT IN POSITION. THIS
FEATURE CAN CAUSE SERIOUS INJURY OR DEATH TO
PERSONS SWIMMING NEAR THE BOAT OR ATTEMPTING
TO BOARD WHEN IT IS ACTIVATED.
WHEN THE POSITION HOLDING FEATURE IS ACTIVATED:
THE PROPELLERS ROTATE AUTOMATICALLY;
PROPELLER ROTATION MAY NOT BE OBVIOUS;
THE BOAT MAY SUDDENLY MOVE IN ANY DIRECTION;
THE PROPELLERS CAN INJURE PEOPLE IN THE WATER
ANYWHERE AROUND THE BOAT.
IF YOUR BOAT IS EQUIPPED WITH A POSITION HOLDING
FEATURE, THE FOLLOWING PRECAUTIONS APPLY:
ALWAYS ASK THE CAPTAIN BEFORE ENTERING THE WATER.
UNLESS THE CAPTAIN GIVES YOU PERMISSION:
DO NOT GO IN THE WATER; WIND OR WATER CURRENT CAN
MOVE SWIMMERS INTO THE PROPELLERS.
DO NOT SIT OR STAND WHERE YOU COULD FALL
OVERBOARD; YOU MAY LOSE YOUR BALANCE IF THE BOAT
MOVES SUDDENLY.
4.8 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 flash
-
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 information 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.
Typical Trim Tab Switches
Always establish the intended heading and cruise
speed before attempting to adjust the hull attitude
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 effect. Avoid depressing the switch while
awaiting the trim plane reaction. By the time the
effect 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 off plane, lowering the tabs slightly,
bow down, will improve the running angle and
operating efficiency. Too much bow down tabs can
reduce operating efficiency and cause substantial
steering and handling difficulties.
Be extremely careful when operating in a following
sea. The effect of trim tabs is amplified under such
conditions. Steering and handling difficulties 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.
Summary of Contents for 340 DC
Page 1: ...OWNER S MANUAL 340 DC...
Page 2: ...2 Revision 0 11 07 2018...
Page 14: ...14 NOTES...
Page 22: ...22 NOTES...
Page 25: ...25 Operation...
Page 86: ...86 NOTES...
Page 102: ...102 NOTES...
Page 122: ...122 NOTES...
Page 130: ...130 NOTES...
Page 149: ...149 MAINTENANCE LOG Appendix B Hours Date Dealer Service Repairs...
Page 150: ...150 Maintenance Log Hours Date Dealer Service Repairs...
Page 151: ...151 Maintenance Log Hours Date Dealer Service Repairs...
Page 152: ...152 Maintenance Log Hours Date Dealer Service Repairs...
Page 153: ...153 Maintenance Log Hours Date Dealer Service Repairs...
Page 154: ...154 Maintenance Log Hours Date Dealer Service Repairs...
Page 155: ...155 Appendix C BOATING ACCIDENT REPORT...
Page 156: ...156 Boating Accident Report...
Page 157: ...157 Boating Accident Report...
Page 158: ...158 NOTES...
Page 160: ...160 NOTES...
Page 167: ...CAUSE AND SOLUTION...
