Dometic EA1000 User manual

Electronic Power Steering with Electric Actuator
Installation and User Manual — Book 54
EA1000, EA1100
[REVISION C] Form No. 682220 | ©2020 Dometic Corporation
WARNING
Cancer and Reproductive Harm
www.P65Warnings.ca.gov
EN
POWER & CONTROL
OPTIMUS EPS

ii EN
All information, illustrations and specifications in this manual are based on
the latest information available at the time of publishing. The illustrations
used in this manual are intended as representative reference views only.
Moreover, because of our continuous product improvement policy, we
may modify information, illustrations and/or specifications to explain and/
or exemplify a product, service or maintenance improvement. We reserve
the right to make any change at any time without notice.
©2020 Dometic
All Rights Reserved. This document, subject matter and all information
herein is the sole, exclusive and confidential property of Dometic and shall
not be disclosed, copied, reproduced or used in whole or in part for any
purpose other than as specifically authorized in writing by Dometic.
is a registered trademark of the American Boat &
Yacht Council (http://www.abycinc.org)
NMEA 2000® is a registered trademark of the National Marine
Electronics Association.
Optimus, Optimus 360, SeaStar, and BayStar are all trademarks of Dometic.
California
Proposition 65 Warning
Battery posts, terminals, and related accessories contain
lead and lead compounds, chemicals known to the state
of California to cause cancer and reproductive harm.
Wash hands aer handling.
This book contains:
• the user’s manual for the Optimus EPS and Optimus 360 system with
Electric Actuator for outboard powered boats.
• installation instructions for the EPS system with Electric Actuator.
This book must be delivered to the owner when installation is complete.
Thank you for choosing Optimus™Electronic Power Steering (EPS) with
Electric Actuator. You have chosen a state of the art steering system that
will provide years of effortless and trouble free steering performance.
About this Book
NOTE
If you are installing the Optimus 360 joystick control system, you will need
to refer to the joystick installation instructions provided separately.

iii
EN
Table of Contents
1 Important Safety Information............................................... 1-1
1.1 Explanation of symbols .................................................... 1-1
1.2 Safe operation............................................................... 1-2
1.3 Safety considerations for installers .................................... 1-3
1.4 Safety Decal.................................................................. 1-4
2 System Overview................................................................. 2-1
3 Using Your EPS System ........................................................ 3-1
3.1 Before first use............................................................... 3-1
3.1.1 System inspection ................................................... 3-1
3.1.2 Interference check................................................. 3-2
3.2 System operation.......................................................... 3-3
3.2.1 First time operation................................................ 3-3
3.3 CANtrak display............................................................ 3-4
3.3.1 CANtrak display navigation..................................... 3-5
3.3.2 CANtrak display map — All Helms Active................. 3-6
3.3.3 All Helms Active screen .......................................... 3-7
3.3.4 Steering maintenance screen .................................. 3-7
3.3.5 Settings screen..................................................... 3-8
3.3.6 Speed sensitive steering........................................ 3-9
3.3.7 Display brightness ................................................ 3-9
3.4 Autopilot operation...................................................... 3-10
3.5 Joystick operation (if so equipped)................................... 3-11
3.5.1 Joystick fundamentals............................................. 3-11
3.5.2 Joystick tips ......................................................... 3-14
3.5.3 Joystick operation examples.................................. 3-15
3.5.4 Returning to conventional operation....................... 3-18
4 System Faults and Hazards.................................................. 4-1
4.1 Fault types .................................................................... 4-1
4.2 Fault notification ............................................................ 4-1
4.3 Danger fault handling .................................................... 4-2
4.3.1 Limp home ........................................................... 4-2
4.3.2 Emergency manual steering override ...................... 4-4
4.4 Warning fault handling................................................... 4-5
4.5 Loss of CANtrak display ................................................. 4-5
5 Installation........................................................................... 5-1
5.1 Before you start ............................................................. 5-1
5.2 Electric Actuator ............................................................ 5-1
5.2.1 Planning............................................................... 5-2
5.2.2 Installation ........................................................... 5-2
5.2.3 Ground strap installation........................................ 5-5
5.3 Actuator harness........................................................... 5-6
5.3.1 Planning............................................................... 5-6
5.3.2 Bulkhead installation ............................................. 5-8
5.3.3 Harness protection .............................................. 5-10
5.3.4 Harness connection to actuator.............................. 5-11

iv EN
5.4 Electronic helm............................................................. 5-11
5.4.1 Planning.............................................................. 5-12
5.4.2 Helm installation.................................................. 5-12
5.5 CANtrak display.......................................................... 5-17
5.5.1 Planning .............................................................. 5-17
5.5.2 Installation .......................................................... 5-17
5.6 Electrical connections................................................... 5-18
5.6.1 Power connection ................................................ 5-18
5.6.2 CAN1 connection................................................ 5-22
5.6.3 CAN2 connection ............................................... 5-28
5.6.4 CAN3 connection ............................................... 5-31
5.6.5 Ignition sensing .................................................. 5-32
6 Setup and Configuration ..................................................... 6-1
6.1 First time power-up ........................................................ 6-1
6.2 Initial setup................................................................... 6-2
6.2.1 Select system type ................................................ 6-2
6.2.2 Select steering type .............................................. 6-3
6.2.3 Select number of devices ...................................... 6-3
6.2.4 Select device locations.......................................... 6-3
6.2.5 Select RPM source................................................ 6-3
6.3 Steering setup .............................................................. 6-4
6.3.1 Configuration ....................................................... 6-4
6.3.2 Calibrating the Electric Actuators............................ 6-4
6.3.3 Set Proportional Sensitivity..................................... 6-7
6.3.4 Check installation ................................................. 6-7
6.3.5 Move steering...................................................... 6-7
7 Maintenance and Troubleshooting ..................................... 7-1
7.1 Maintenance schedule.................................................... 7-1
7.1.1 Owner/Operator..................................................... 7-1
7.1.2 Qualified marine mechanic ...................................... 7-1
7.2 Troubleshooting guide ................................................... 7-2
Appendix A ............................................................................... A-1
A.1 Helm templates ............................................................. A-1
A.1.1 Front Mount Helm (EH1510/EH1512).......................... A-1
A.1.2 Sport Plus Tilt Helm (EH1530/EH1532) ..................... A-3
A.1.3 Classic Tilt Helm (EH1550/EH1552) ......................... A-5
A.1.4 Rear Mount Helm (EH1570/EH1572)........................ A-7
A.2 CANtrak display template .............................................. A-9
A.3 Bulkhead fitting template ............................................... A-11
Appendix B ................................................................................B-1
B.1 Bolt torque specifications................................................ B-1
B.2 System specifications ..................................................... B-1
Warranty Statement of limited warranty
Return goods procedure
Technical support

1-1
EN
1 Important Safety
Information
Safe operation of Optimus EPS with Electric Actuator depends on proper
installation and maintenance of the system, as well as the operator’s safe
judgment, boating knowledge, and expertise.
The installer and operator must read and understand the safety requirements
in this section before installing or using the steering system. If you have any
questions about safe installation or operation of this system, contact
Dometic Marine. Please don’t guess.
The symbols below are used throughout this publication to alert you to
potential hazards involved with the operation and installation of this product.
Observe these warnings and notices carefully. The safety alerts alone
cannot eliminate hazards; strict compliance with any special instructions
during installation, operation, and maintenance, along with common sense
operation, are important measures to prevent hazardous situations.
1.1 Explanation of symbols
DANGER!
Safety instruction: Indicates a hazardous situation that, if not avoided,
will result in death or serious injury.
WARNING!
Safety instruction: Indicates a hazardous situation that, if not avoided,
could result in death or serious injury.
CAUTION!
Safety instruction: Indicates a hazardous situation that, if not avoided,
could result in minor or moderate injury.
NOTICE!
Indicates a situation that, if not avoided, can result in property damage.
NOTE
Supplementary information for operating the product.

1-2 EN
General
• Read and understand this manual, the Quick Reference Guide, and any
other documentation provided with your steering system.
• Know and obey all applicable federal, state, and municipal laws and
regulations that govern boating in your area. Dometic recommends all
boat operators take a boating safety course.
• Never operate a boat while under the influence of drugs or alcohol.
Before every use
• Perform the system inspection as described in section 3.1.1.
• Make sure your Quick Reference Guide and/or this manual is on your
boat. Both contain important safety information that you may need in the
event of a system fault while on the water.
During use
• Wear a Coast Guard-approved personal flotation device (PFD).
• Attach the engine shut-off lanyard to your PFD.
• Do not allow anyone not familiar with the controls (steering, shift/
throttle) to operate the boat.
After use
• Rinse off the Electric Actuator(s) thoroughly, using only fresh, clean water
at low pressure. Never use high-pressure water from a hose nozzle or
pressure washer.
• Do not use acetone, or cleaners containing ammonia, acids, or any other
corrosive ingredients, on any Optimus components.
• Some products formulated for cleaning fiberglass hulls are known to
aggressively corrode stainless steel shafts. If using a hull cleaner, avoid
overspray on to the Electric Actuators. Rinse off any overspray
immediately with fresh, clean water.
WARNING!
Do not operate the boat if any component is not in proper working order.
It may result in a loss of steering control, which could lead to a collision
and/or ejection from the boat, causing property damage, personal injury,
and/or death.
WARNING!
Do not operate your boat without a functioning CANtrak display.
1.2 Safe operation
WARNING!
The safety information below is intended to inform you of hazards that
may be present when operating a boat equipped with Optimus EPS.
Read and understand this information.

1-3
EN
Before installation
• Read and understand this manual, and any other manuals supplied with
this system.
• Ensure you have all the required components on hand before you start.
• Do not use a wheel-mounted trim switch with coiled cord. The cord can
wrap around the steering wheel shaft and inhibit steering.
During installation
• Install components as instructed in this manual. Some component parts
and kits may contain additional installation instructions – refer also to
those instructions.
• Do not substitute any component of the system. Dometic and Optimus
parts are rigorously engineered and tested to ensure system integrity.
Substitution of components may compromise safety, performance, and
reliability.
• If an instruction is unclear, contradictory, or you are otherwise unsure how
to proceed, do not guess. Contact Dometic Marine technical support.
After installation
• Perform the system inspection and interference checks described in
section 3.1.1 and 3.1.2.
• Correct any interference issues before handing the boat to the owner.
1.3 Safety considerations for installers
WARNING!
Optimus EPS with Electric Actuator must be installed by an authorized
dealer or OEM boat builder.
WARNING!
Failure to comply with these instructions may result in a loss of steering
control, which could lead to a collision and/or ejection from the boat,
causing property damage, personal injury, and/or death.

1-4 EN
1.4 Safety Decal
The electric actuator is shipped with a decal that warns of safety hazards
and contains some instructional information. In the event the decal has
been damaged, or is otherwise illegible, the decal is reproduced here.
Figure 1-1. Safety Decal.

2-1
EN
2 System Overview
Optimus EPS with Electric Actuator is the marine industry’s first fully
electric, retrofittable, steer-by-wire system for outboard engines. This
premium system is engineered for simple installation, with fewer parts than
our standard electro-hydraulic EPS, no hoses to route, and no hydraulic
system to purge. With a list of extensive safety features including redundant
communications, self-monitoring, and fault alerts, Optimus EPS with
Electric Actuator will give you years of safe and reliable operation.
The system consists of the major components listed below. Figure 2-1 and
figure 2-2 show these components in a schematic system diagram.
The electric steering actuator is a state-of-the-art device that converts the
rotation of a brushless DC motor into precise linear motion and position
control. It mounts directly to the outboard motor in place of a conventional
hydraulic steering cylinder.
The Steering Control Unit (SCU), integrated with the actuator, receives wheel
movement messages from the helm and controls the actuator to steer as
required. The SCU manages CANbus communications between system
components, synchronizes multiple actuators, and monitors rudder position.
The SCU can also respond to inputs from the SeaWays autopilot, or from a
certified third-party autopilot system. The SCU replaces the PCM used in
the standard Optimus electro-hydraulic system.
The helm converts steering wheel movement into digital messages that are
sent over CAN1 to the SCU. A system of friction plates in the helm allow the
steering effort to be adjusted according to a setpoint received from the SCU.
(A steering wheel is not included with the Optimus EPS system.)
The CANtrak displays system status and fault information and enables the
operator to make changes to user-adjustable steering settings (when so
configured by the installer). It is also used to activate the optional SeaWays
autopilot and SeaStation GPS anchoring features on boats with the Optimus
360 joystick control system. Authorized installers have access to additional
menus with system setup and calibration tools.
CAN (controller area network) is a serial network protocol that is widely used
in marine and automotive control systems. Each device (node) on the network
can send and receive data using specially formatted messages. The ability
to reliably communicate data between devices is what enables the steer-
by-wire functionality of Optimus EPS.
Optimus EPS uses up to three independent CAN networks, designated CAN1,
CAN2, and CAN3.
• CAN1 is a low-speed, fault-tolerant network with redundant power wiring.
It is used for safety-critical communication between the helm and SCU.
Electric steering actuator and
steering control unit (SCU)
Electronic
helm
CANtrak display
CAN Networks

2-2 EN
• CAN2 is a high-speed network used to communicate with a third-party
autopilot, and with a joystick and shift/throttle controls on an Optimus
360 joystick control system. Use of this network is optional on single-
engine systems.
• CAN3 is a public network using the NMEA 2000 protocol. The Optimus
system broadcasts public messages onto this network and monitors the
network for engine RPM.
The optional Optimus 360 joystick control system converts an operator’s
inputs into steering, shift, and throttle commands using this three-axis
joystick controller. The joystick can rotate, move forward and back, and
side to side. Combinations of these movements give the operator precise
control of the boat’s direction and speed.
Joystick (optional)

2-3
EN
Figure 2-1. Optimus EPS system diagram, single station, twin engine.
RUN
OFF
EPS
NETWORK
(CAN1)
PUBLIC NETWORK
PRIVATE NETWORK (CAN2)
ELECTRONIC
HELM
COLOR
CANtrak
BUZZER
CAN1 HUB**
ENGINE GATEWAY*
12V POWER
OPTIONAL
AUTOPILOT
CCU*
S W I T C H P A N E L*
ELECTRIC ACTUATOR ELECTRIC ACTUATOR
P S
PURPLE
PURPLE
1A FUSE
* COMPONENTS NOT SUPPLIED
BY DOMETIC
** CAN1 HUB AVAILABLE LATE-2020
BREAKER*
PORT
POWER
SOURCE*
BREAKER*
STARBOARD
POWER
SOURCE*
+
–+
–

2-4 EN
Figure 2-2 Optimus 360 system diagram, single station, twin engine.
RUN
OFF
EPS
NETWORK
(CAN1)
PUBLIC NETWORK
PRIVATE NETWORK (CAN2)
ELECTRONIC
HELM
COLOR
CANtrak
BUZZER
JOYSTICK
CAN1 HUB**
ENGINE GATEWAY*
12V POWER
OPTIONAL
AUTOPILOT
CCU*
S W I T C H P A N E L*
ELECTRIC ACTUATOR ELECTRIC ACTUATOR
P S
PURPLE
PURPLE
1A FUSE
* COMPONENTS NOT SUPPLIED
BY DOMETIC
** CAN1 HUB AVAILABLE LATE-2020
BREAKER*
PORT
POWER
SOURCE*
BREAKER*
STARBOARD
POWER
SOURCE*
+
–+
–

3-1
EN
3 Using Your EPS System
Before operating your boat for the first time, take a few moments to:
• Familiarize yourself with the location and function of the steering system
components. Review the system overview in section 2 to learn about the
components and where to find them.
• Perform a system inspection as shown in section 3.1.1.
• Check the Electric Actuator installation for interference as shown in
section 3.1.2.
• Review section 4 to understand the different types of system faults, and
how the system handles them. Out on the water in the middle of a fault
condition is no time to learn the difference between a danger fault and a
warning fault.
System inspection
Inspect your steering system and engine controls before every use. For your
convenience, the inspection steps are summarized on the Quick Reference
Guide included in your document package. Always keep this card on your
boat. (Contact your dealer immediately if you do not have your QR Guide.)
Procedure:
1. Verify immediate steering response when turning steering wheel(s).
Turn the steering wheel slowly to port and starboard and make sure
the engine(s) follow the commands. Check at all helm stations.
2. Inspect all steering components, cables, and connections for wear,
kinking, and/or signs of damage.
Check the harness between the actuator and transom for any worn,
abraded, or cracked insulation, or any physical damage. Check that
the connector at the actuator is tight and properly secured. Check that
the fitting at the transom is hand tight, and that all harness bends are
smooth and gradual with no signs of kinking or twisting. Check that the
actuator shaft is free of mechanical damage or excessive wear.
3. Check for binding, loose, or worn steering components.
Check that the actuator and harness move freely without any snags or
hang-ups through the entire steering range. Actuator motion should be
smooth. Any jerkiness in the motion is a sign that something is wrong
and it should be checked. Check that the helm motion is smooth with
no mechanical play in
the helm or wheel hub. Don’t forget to check any
additional helm stations.
3.1 Before first use
3.1.1
WARNING!
Failure to comply with these instructions may result in a loss of steering
control, which could lead to a collision and/or ejection from the boat,
causing property damage, personal injury, and/or death.

3-2 EN
4. Verify shift and throttle response at all control levers.
Check that all control levers operate freely and cause the engines to
shift accordingly. Put the engines in neutral idle mode and confirm that
the throttle responds correctly and returns to idle. If your engine’s shift
and throttle are cable operated, check all cables for signs of wear or
damage. Check that all linkages and cables move freely and are not
biding or corroded.
5. Verify that no alarms or warnings are shown on the CANtrak display.
If any warnings are present, follow the instructions on the display.
WARNING!
Do not operate the boat if any component (including CANtrak display)
is not in proper working order. It may result in a loss of steering control,
which could lead to a collision and/or ejection from the boat, causing
property damage, personal injury, and/or death.
WARNING!
If any interference occurs return the boat to your dealer immediately for
corrective action.
3.1.2 Interference check
NOTICE!
Failure to perform these checks may result in damage to the Electric
Actuator, which could affect operation of the steering system.
Perform the steps below to confirm there is no interference between
actuators, splashwell, engines, tie-bars, or any combination of these parts.
At each step check that the harnesses are moving freely with no rubbing or
binding, and that the bend radius is never less than 3.5” (90 mm). Steer
slowly while performing these checks, and always have someone watching
at the transom. The tilt operation is where the potential for actuator
damage is highest, so pay attention when tilting up.
1. With engine(s) fully tilted down, turn steering wheel slowly from lock to
lock and confirm no interference occurs through the travel.
2. Carefully tilt engine(s) up. Check for clearance to the underside of the
Electric Actuator and the transom and engine mounting bolts. If it
appears the actuator will contact any fixed parts, stop tilting immediately
to avoid damaging them. Your dealer may need to install a tilt limit.
3. With engines tilted up, turn steering wheel slowly from lock to lock and
confirm no interference occurs through the travel.
Multi-engine boats only:
4. Tilt the engines back down, then trim the port engine(s) fully down and
the starboard engine(s) fully up. Steer lock to lock and confirm no
interference occurs. Reverse the trim position of the engines and repeat.
5. Check that all combinations of trim/tilt and steering do not cause
interference.

3-3
EN
WARNING!
Do not operate the boat if any component is not in proper working order.
It may result in a loss of steering control, which could lead to a collision
and/or ejection from the boat, causing property damage, personal injury,
and/or death.
WARNING!
Do not operate the boat if any component is not in proper working order.
It may result in a loss of steering control, which could lead to a collision
and/or ejection from the boat, causing property damage, personal injury,
and/or death.
WARNING!
Do not attempt to move from one helm station to another while the boat
is under way. Place engines in neutral and ensure the boat is stationary
before moving to another station.
WARNING!
Do not operate your boat without a functioning CANtrak display.
CAUTION!
Keep magnets away from the helm and actuator. They may interfere
with operation.
3.2.1 First time operation
We recommend you take the boat out for an initial sea trial in calm conditions.
Connect the engine ignition lanyard to your PFD or a belt loop and ensure
any passengers are securely seated. Proceed carefully to a section of deep,
open water at moderate speed. Use the trip to get a feel for the steering
response. When in deep enough water, try various maneuvers with the boat
at various speeds until you are comfortable operating the boat. Spend some
time backing up at slow speed. Once you are familiar with the operation
and steering response, run the boat in a safe, normal fashion and enjoy using
the most advanced outboard steering system available today.
Always perform the system inspection described in section 3.1.1 before
using your boat.
Optimus EPS with Electric Actuator is designed to operate much like a
conventional hydraulic system. When the engine ignition is on, the system
is active at all helms. Turn any steering wheel and the actuators will steer
the engines. On a multi-station boat there is no need to transfer control
from one helm to another.
Like a conventional hydraulic system, steering input from each helm is added
cumulatively, which means it is possible that steering inputs from a second
helm can cancel out or exaggerate the operator’s inputs. It is important
that all passengers, and especially children, are instructed not to touch the
helms unless specifically requested to take control.
3.2 System operation
NOTE
All steering helms are active when Optimus EPS is turned on. This is the
same as you would find on a conventional hydraulic steering system.

3-4 EN
The Optimus CANtrak display has an easy to navigate menu system,
adjustable backlighting for night use and includes a cover to protect it from
the sun when not in use.
3.3 CANtrak display
Figure 3-1. CANtrak display, All Helms Active screen.
The CANtrak display serves these purposes:
1. Displays the current system operating conditions.
2. Handles system faults:
a) Displays system warnings in case of a system fault.
b) Sounds an audible alarm in case of a system fault.
c) Instructs the operator what to do in case of a system fault.
3. Permits changes to the basic system settings.
4. Provides system and diagnostic information.

3-5
EN
WORD
OR SYMBOL IDENTIFIES A FUNCTION OR SETTING
Moves the cursor up the screen to the next item.
Moves the cursor down the screen to the next item.
Enters the sub-menu at the cursor location.
Reduces the setting of the selected item.
Increases the setting of the selected item.
Accepts a given statement or condition and advances
to the next screen.
Returns to previous menu.
Saves change and returns to previous menu.
OK
Save
3.3.1 CANtrak display navigation
The five buttons at the bottom of the unit are used to select various actions.
The five boxes at the bottom of the display screen indicate the legend for
each button. These legends vary based on what is on the screen.
Figure 3-2. Navigation buttons and legend.

3-6 EN
3.3.2
Figure 3-3. CANtrak display map.
CANtrak display map — All Helms Active
(normal steering mode)
The following diagram shows the progression from the Splash Screen to
the All Helms Active Screen, then illustrates the various choices available
from the All Helms Active screen.
* Menu may be deactivated. Contact your dealer.
MENU
All Helms Active
Maintenance – Diagnostic and maintenance functions.
Settings* – Set steering parameters such as number of turns
and steering effort.
Faults – View active faults.
System Health – View the status of all devices on the network.
Good Warning, but operational Failed ? Not found
Devices – Access product information, such as part number
and serial number, for each device on the network.
Splash Screen
Initial Warning System Check 1 System Check 2 System Check 3
INFO NEXT NEXT
OK
3 SEC INTERVAL
BACK
OK
BACK

3-7
EN
3.3.3 All Helms Active screen
The All Helms Active screen (also called the Run screen) will be displayed
under normal operating conditions after the startup warning has been
acknowledged. The screen shows engine RPM, rudder angle, and legends
for the Display and Menu buttons.
MULTI
ENGINE
SINGLE
ENGINE
Figure 3-4. All Helms Active screens.
3.3.4 Steering maintenance screen
The Steering Maintenance screen allows user access to actuator calibration
and move functions. We recommend that you use these functions only under
the direction of a Dometic technical support representative.
Calibration is required if you used the emergency manual override procedure.
See section 6.3.2 for calibration instructions.
The move function is described in section 6.3.5.

3-8 EN
3.3.5 Settings screen*
If the boat builder (or dealer) has enabled this menu option, the Steering
Settings screen allows adjustment of steering effort and helm turns. To get
to the screen, select Settings from the Menu, then select Steering. You will
be prompted to save changes when you exit.
Helm Turns at Low Speed
Sets the number of turns (hard-over to hard-over) when the vessel is
running at low speeds. The range is 3.5 to 8 Turns.
Helm Turns at High Speed
Sets the number of turns (hard-over to hard-over) when the vessel is
running at high speeds. The range is 3.5 to 8 Turns.
Helm Effort at Low Speed
Sets the steering resistance when the vessel is running at low speeds. It is
adjustable between 1 and 100.
Helm Effort at High Speed
Sets the steering resistance when the vessel is running at high speeds. It is
adjustable between 1 and 100.
Helm Effort in Auto-Pilot
Sets the steering resistance when autopilot is engaged. To prevent
accidental course corrections with the wheel this should be set slightly
higher than the high speed effort. It is adjustable between 1 and 100.
* May not be available on all installations. Contact your builder or dealer.
Figure 3-5. Steering Settings.
WARNING!
Adjusting steering effort or helm turns can significantly impact boat
handling. Proceed with caution after making any changes.