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Edgewater 280CX Owners Manual
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280CX
280 Crosso ver
OWNER ASSISTANCE MANUAL
Revised 2014

Dear EdgeWater 280 CX owner:
Congratulations on purchasing one of the finest small boats ever built. It has been constructed with
care from the finest available materials. At EdgeWater we take great pride in the quality and
craftsmanship that goes into each boat, large or small. We believe you’ll have many years of
enjoyment from your new EdgeWater and thank you for entrusting your leisure time to one of our fine
products.
This manual has been assembled to help you learn more about your new boat and increase your
enjoyment of it. Your EdgeWater has been built for a “Lifetime on the Water”.
Boat safe and boat smart, we wish you many years of boating pleasure.
Sincerely,
Peter Truslow
President
EdgeWater Powerboats
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Service Information
Customer Name
Address
City State Zip
Phone Cell Business
E-mail Address
Dealer Name
Address
City State Zip
Phone Fax
Purchase Date Delivery Date
Engine Make/Model Engine Serial #
Engine Make/Model Engine Serial #
Engine Make/Model Engine Serial #
Hull Number DMA Ignition Key #
EdgeWater Power Boats LLC reserves the right to make alterations in the standard and optional
equipment without incurring obligation to those boats already having been built. Every effort has
been made to ensure that the information in this manual accurately describes vessels being built
at the date of printing.
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Table of Contents
Chapter 1 General Information .................................................................. 6
1.1 General ................................................................................................................................ 6
1.2 Owner / Operator Responsibilities ....................................................................................... 6
Chapter 2 Helm Control Systems .............................................................. 7
2.1 General ................................................................................................................................ 7
2.2 Steering System................................................................................................................... 7
2.3 Engine Throttle and Shift Controls ....................................................................................... 8
Chapter 3 Propulsion System.................................................................... 8
3.1 General ................................................................................................................................ 8
3.2 Engine Cooling System........................................................................................................ 9
3.3 Propellers ............................................................................................................................ 9
3.4 Engine Power Tilt and Trim................................................................................................ 10
3.5 Engine Instrumentation ..................................................................................................... 10
Chapter 4 Fuel System ............................................................................. 12
4.1 General .............................................................................................................................. 12
4.2 Fuel Fill .............................................................................................................................. 12
4.3 Fuel Vent............................................................................................................................ 12
4.4 Fueling ............................................................................................................................... 13
4.5 Fuel System Maintenance ................................................................................................. 13
4.6 Fuel Filters ......................................................................................................................... 13
Chapter 5 Electrical System .................................................................... 14
5.1 General .............................................................................................................................. 14
5.2 Switch Panels & Battery Isolator ........................................................................................ 14
5.3 Electrical System Maintenance .......................................................................................... 14
Chapter 6 Raw Water & Freshwater Systems ........................................ 15
6.1 General .............................................................................................................................. 15
6.2 Livewell Operation ............................................................................................................. 15
6.3 Raw Water Washdown ...................................................................................................... 15
6.4 Freshwater System ............................................................................................................ 15
6.5 Raw Water System Maintenance....................................................................................... 16
Chapter 7 Drainage System .................................................................... 16
7.1 General .............................................................................................................................. 16
7.2 Drain System Maintenance ................................................................................................ 16
7.3 Cockpit Drains.................................................................................................................... 17
7.4 Transom Bilge .................................................................................................................... 17
7.5 Locker Drains ..................................................................................................................... 17
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Chapter 8 Safety Equipment .................................................................... 17
8.1 Required Safety Equipment .............................................................................................. 17
8.2 Suggested Safety Equipment - Inshore ............................................................................. 18
8.3 Suggested Safety Equipment – Offshore........................................................................... 19
Chapter 9 Safe Operation......................................................................... 19
9.1 Pre-Cruise Check List ........................................................................................................ 19
9.2 Basic Rules of the Road .................................................................................................... 20
9.3 Safe Operation ................................................................................................................... 21
9.4 Towing or Being Towed ..................................................................................................... 22
9.5 Stopping the Boat .............................................................................................................. 22
9.6 Docking .............................................................................................................................. 22
9.7 After Operation ................................................................................................................. 23
9.8 Trailering Your Boat ........................................................................................................... 23
9.9 Launching Your Boat ......................................................................................................... 24
9.10 Retrieving Your Boat ........................................................................................................ 24
Chapter 10 Routine Maintenance ............................................................ 25
10.1 Exterior Hull and Deck ..................................................................................................... 25
10.2 Engine .............................................................................................................................. 26
Chapter 11 Exterior Equipment ............................................................... 27
11.1 Anchor Locker .................................................................................................................. 27
11.2 Swim Ladder .................................................................................................................... 27
11.3 Trim Tabs ......................................................................................................................... 27
Chapter 12 Seasonal Maintenance.......................................................... 27
12.1 Engine .............................................................................................................................. 27
12.2 Hull ................................................................................................................................... 28
12.3 Storage ............................................................................................................................ 28
12.4 Trailer ............................................................................................................................... 28
Appendix ..................................................................................................... 29
5

1/General Information
1.1 General
The EdgeWater 280CX has been designed to be powered by twin outboard engines.
Each outboard manufacturer provides manuals that carefully detail operation and maintenance of
their products. Please read and observe the instructions set forth in your outboard manual.
1.2 Owner / Operator Responsibilities
Registration
Registering your boat is important to you. Federal Law requires that all powered, undocumented
vessels be registered in their state of principal use. Contact the appropriate agency in your local
state to obtain specific registration information.
Reporting Boating Accidents
All boating accidents must be reported to the proper authorities in the state which the accident
occurred. If someone dies or disappears as a result of the recreational boating accident, it must
be reported immediately, with a formal report being made within 48 hours. If there is damage of
more than $500, or if the boat is completely lost, a formal report must be made within 10 days.
Questions regarding accidents may be directed to the Boating Safety Hotline, 800-368-5647.
Education
Whether or not you are an experienced boater, attending a Boating Education Course can be
beneficial. If you are inexperienced, it is the best and safest way to begin your life on the water. If
you are an experienced boater, it’s always good to sharpen your skills.
Required Equipment
The U.S. Coast Guard requires certain equipment on each boat. In addition, they also set
minimum equipment and safety standards. For more detailed requirement information, obtain
“Federal Requirements And Safety Tips For Recreational Boats”, by contacting the Boating Safety
Hotline, 800-368-5647.
Some states and local agencies require equipment that is not required by the U.S. Coast
Guard. Your local agency or dealer can provide specific information regarding these non-
standard requirements.
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2/Helm Control Systems
2.1 General
The helm station is the control center for the boat. The main control systems are the engine
throttle and shift controls, the steering system, and the trim tab controls. These provide the
operator the ability to control speed, direction, boat trim, and attitude. Each manufacturer provides
manuals on the operation and use of their systems.
2.2 Steering System
General
The manual which comes with your steering system provides specific information on your steering
system.
The SeaStar® helm pump is an axial piston pump. It has a built-in lock valve to prevent the
steering load of the engines from feeding back to the boat operator. When the steering wheel is
turned clockwise, hydraulic fluid is pumped out of the helm unit, into the starboard hydraulic line
and then into the cylinder. As the fluid is pumped into one side of the steering cylinder, an equal
volume of fluid is displaced from the opposite side, moving the steering cylinder body to port. The
cylinder body is connected directly to the engine’s stern arm, which moves the front of the engine
to port and puts the boat into a starboard turn. The fluid displaced from the cylinder returns to the
helm pump. Please see diagram in the manual’s appendix for a visual representation of this
system. In the event of a power assist failure, the steering system will still function normally but in
a manual mode, which requires greater steering effort by the operator.
*NOTE: Depending on engine manufacturer, some steering systems are furnished with power
assist pumps. Please refer to the engine owner’s manual for complete instructions on their brand.
While running at slow speeds, most boats tend to wander slightly back and forth. Keeping the
wheel in the center without overcompensating for the slight wandering will prevent over steering
and reduce the tendency to wander.
Steering System Maintenance
Routine system inspection should occur regularly. Cables, hoses, linkage and helm assemblies
should be inspected for wear, corrosion, cracking, or deterioration. Cleaning and light grease
should be applied to all exposed metal parts and other damaged or deteriorated parts should be
replaced as soon as possible. Cleaning fluids containing ammonia, acids or any other corrosive
ingredients MUST NOT be used for cleaning any part of the steering system. Failure to comply
will cause serious damage to the system, which could result in an accident or injury.
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2.3 Engine Throttle and Shift Controls
Refer to the engine manual supplied with your engine for specific information on your controls.
The ones depicted are those supplied by Yamaha.
Your EdgeWater 280CX comes with twin engines only. The engines may be controlled
mechanically or electronically depending on the type of engine. Mechanical controls operate
using a push/pull cable system connected directly to the engine shift linkage and throttle
assemblies. Electronic controls have no mechanical attachment and instead control solenoids on
the engines for throttle and shifting. When moving the handles forward and back, the operator
controls the amount of fuel and air being used and the gear selector for forward, neutral and
reverse. Careful use of the controls provides smooth, responsive and safe operation.
Allow time for the engine RPM to come down to idle before shifting to reverse or severe
gearbox damage could occur. PLEASE REFER TO YOUR ENGINE OWNER’S MANUAL
FOR FURTHER OPERATIONAL PROCUDURES FOR YOUR OUTBOARD.
Engine Stop Switch
This device is designed to disable the engine(s) in the event the vessel operator is thrown from
the control station. The engine stop switch lanyard should always be worn by the operator, while
the boat is in motion. Pulling the lanyard from the control will stop the engine(s). If the engine will
crank properly, but not start, the lanyard may not be properly attached to the engine stop switch.
Do not use the engine stop switch to stop the boat unless it is an emergency as it may
impair your ability to quickly re-start the engine.
**NOTE** Each ignition key has a 3 digit number stamped on it. Please record this number
for future reference on the service information page in the front of this manual.
3/Propulsion System
3.1 General
Your new EdgeWater 280CX is designed to be powered by twin outboard motors. Most 2-cycle
outboards currently use an automatic system to mix the oil with the gasoline before the engine
uses it. If equipped with a 2-cycle engine, there will be oil tanks in the aft bilge locker. Make sure
these tanks always have a sufficient amount of the recommended 2-cycle oil for your cruise, plus
some reserve. All 4-cycle engines require oil be maintained in the crankcase. Always check the
crankcase oil level before each day’s run.
*NOTE: All Yamaha engines installed by EdgeWater Power Boats will be 4-cycle.
Always follow the manufacturer’s recommendations and use only the recommended oil
types.
Don’t attempt to service your outboard or any of its components unless you are
thoroughly familiar with its operation and dangers. Many of the moving parts are exposed
and can pose an extreme danger to anyone unfamiliar with their operation. Always leave
the servicing to a qualified technician.
8

Each manufacturer provides manuals designed to assist you in the proper operation and
maintenance of your new engine. If the boat is to be kept in saltwater for an extended period,
electrolysis and marine growth can become a problem. When leaving your boat in salt water
overnight or for an extended period, tilt the engine as high out of the water as possible. This will
decrease the possibility of marine growth on the outside of the engine, as well as reduce the
potential of marine growth compromising the cooling water inlets in the lower unit, which can
cause overheating.
Do not paint your outboard’s lower unit with paints designed for boat hulls. Some can
cause severe damage to your engine. Check with your engine manufacturer to get their
recommendation.
Do not attempt control adjustments unless you are very familiar with their function, operation and
adjustment. Failure to properly adjust the system components can adversely affect your boat’s
performance and safety and may also result in severe engine damage.
Please return all warranty cards for boat, engine and other related items. This will assist
you in the event you have a warranty problem.
3.2 Engine Cooling System
All outboard engines are cooled by water taken in through ports in the lower part of the drive
section. Make sure these ports are free of debris or other items that might cause the flow to be
restricted. Maintain a routine vigilance to see that the visual inspection streams have a steady
flow of water. If they do not, shut down the engine to see if they are clogged or if there is a more
serious problem. Be especially watchful if you have gone through an area of vegetation or
shallow water as the intake ports can become clogged with weeds, dirt or other debris.
Do not run your outboard without water coming into the lower unit. The water pump impeller can be
damaged in only seconds of this type of operation.
3.3 Propellers
A turning propeller moves the boat through the water, forward or backward. They should always
be clean and free from nicks or dings, which can adversely affect performance. The propeller
selection is based on the horsepower of the engine and its relationship to the size and weight of
the boat.
Propeller sizes are determined by two numbers, which appear on different propellers at various
locations. They are listed in sequence, for example 13 x 17. The first number is the diameter of
the propeller and the second is the pitch. Pitch is the theoretical distance the propeller moves
through the water with each complete revolution. The larger the number, the greater the
theoretical movement. It also follows that the larger the number the greater horsepower is
required to turn it. With a load which is “normal”, or usual for your boating activities, the engine
should be able to reach its maximum operating RPM range at wide open throttle (WOT) and full
trim. With a light load on smooth water, the engine should reach its manufacturer’s rated
maximum operating RPM at wide open throttle (WOT) and moderate trim. If it does not, you may
have a propeller which has too much pitch. If it goes beyond the maximum recommended RPM
range, you may have too little pitch. Neither condition is good for the engine. You will get shorter
engine life and poorer performance than your boat and motor were designed to provide.
9

If your boat came from the factory with propellers selected by EdgeWater and Yamaha
Engineering, it should already be optimized for the performance of your boat. Before
changing the pitch or diameter of your propeller, always check with your dealer to
determine how the changes will affect your boat and engine performance. Certain modifications
such as bottom paint or options that affect weight balance and/or wind resistance may lower peak
rpm. Always check with your dealer first if optimum rpm cannot be attained.
Very heavy loads will affect the ability of your boat to reach maximum RPM.
3.4 Engine Power Tilt and Trim
The power tilt and trim system on your outboard provides the ability to optimize the running
angle of your EdgeWater 280CX to allow for load and sea conditions. Moving the outboard lower
unit toward the transom is generally referred to as trimming “in”, while moving the outboard lower
unit away from the transom is referred to trimming “out”. It is generally best to have the engine
trimmed in for acceleration from displacement to planning mode. This brings the bow down and
requires less fuel and effort on the engine’s part to plane off the hull. Once on plane, the engine
should be trimmed “out” to optimize performance and minimize fuel consumption.
The first 20° of movement aft of the transom are referred to as trim and is the area generally
used to operate the boat while on plane. The area beyond the first 20° is referred to as tilt and is
usually reserved for operating in shallow water or at idle speeds only.
While running under normal conditions, the bow should be in a 3° to 5° up angle to maximize the
hull’s ride and performance. When sea conditions are rougher than normal, bringing the bow
slightly down may improve the ride and will also allow the boat to remain on plane at a lower
speed.
Your boat will only achieve maximum RPM when the engines are properly trimmed out.
3.5 Engine Instrumentation
The following is presented to familiarize you with the instruments, which may be on your boat.
Every boat is not equipped with the same instrumentation.
All factory installed Yamaha engines include Yamaha’s digital multifunction Command
Link Plus display. Refer to your engine operator’s manual for use details.
Tachometer
The tachometer displays the number of revolutions per minute (RPM) the engine is turning. There
is a designed operation RPM range for the engine. Become familiar with the operating range of
your engine and its operating characteristics. The tachometers designed to aid the boater to
assure the engine performs within that designed range. The tachometer can be used to better
understand the performance of your engine and your EdgeWater 280CX. By monitoring your
tachometer as you operate your EdgeWater, you will find RPM ranges that work better in certain
sea and load conditions. Be alert the tachometer operation may provide an early indication of
difficulty, before it becomes irreversible.
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$26.99
The Edgewater 280CX Owners Manual is an essential reference guide for boat owners, providing valuable information on the care and maintenance of the Edgewater 280CX boat. It is a detailed and easy-to-read manual that covers key topics such as operation, service, and inspection. The manual includes detailed diagrams and visual guides to aid in better understanding of the boat's components. Additionally, it contains important safety tips to prevent potential harm. This manual is indispensable for both professional mechanics and DIY enthusiasts who own an Edgewater 280CX boat.