COBIA 280 CC User manual

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Maverick Boat Group
3207 Industrial 29th St. • Fort Pierce, Florida 34946
(772)-465-0631 •cobiaboats.com
280 CC Owner’s Manual
Revised September 2020

1
Maverick Boat Group
3207 Industrial 29th St. • Fort Pierce, Florida 34946
(772)-465-0631 •cobiaboats.com
Dear New Cobia Owner,
On behalf of Cobia Boats, I would like to
congratulate you on your purchase. We at Cobia
strive to build the best products possible and wish
you years of trouble-free enjoyment. There are
many things to know about the operation, care,
and maintenance of our products and the systems
we install in them. Please review all the applicable
information for your new boat. The more you
know, the more you will enjoy your new Cobia.
Again, a heartfelt thank you from myself and the
whole Cobia Family.
Scott Deal
President and CEO

2
Maverick Boat Group
3207 Industrial 29th St. • Fort Pierce, Florida 34946
(772)-465-0631 •cobiaboats.com
Table of Contents
Cobia 280 CC Specifications ...............................................................................................................3
280 CC Deck Layout...............................................................................................................................4
Pre-Operation Checklist.........................................................................................................................5
Maintenance & Cleaning .....................................................................................................................6
Engine Break-In Period ...........................................................................................................................7
Helm & Command Link Gauges .........................................................................................................8
Fuel-Water Separator & Drain ..............................................................................................................9
Bilge ...........................................................................................................................................................10
Systems......................................................................................................................................................12
Ladder & Props.......................................................................................................................................16
Fuel System ..............................................................................................................................................17
Self-Bailing Cockpit & Livewell ...........................................................................................................18
Rod Storage & Fish Lockers .................................................................................................................19
Anchor Locker ........................................................................................................................................20
Table Lift....................................................................................................................................................21
Trim Tabs ...................................................................................................................................................21
Water System ..........................................................................................................................................22
Battery Switch and Main Distribution Panel ...................................................................................23
Seating......................................................................................................................................................24
Standard Features .................................................................................................................................26
Optional Features ..................................................................................................................................27
Cobia 280 CC Hull Wire Harness........................................................................................................34
Cobia 280 CC Deck Wire Harness ....................................................................................................35
Cobia 280 CC Windlass Wire Harness ..............................................................................................36
Cobia 280 CC Aft Deck Wire Harness..............................................................................................37
Upholstery Care & Cleaning Guide..................................................................................................38
Warranty...................................................................................................................................................39

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Maverick Boat Group
3207 Industrial 29th St. • Fort Pierce, Florida 34946
(772)-465-0631 •cobiaboats.com
Cobia 280 CC Specifications
L.O.A....................................................................................................................27’ 07”
BEAM......................................................................………………….….................9’ 08”
DRAFT........................................................................................................................22”
WEIGHT W/O ENGINE.....................................................................................3500 LBS.
FUEL CAPACITY...............................................................................................189 GAL.
DEADRISE @ TRANSOM....................................................................................21 DEG.
MAXIMUM H.P..........................................................................................................500
TRANSOM HEIGHT……………………………………………...……………….. 25” TWINS
COCKPIT SQUARE FOOTAGE………………………………………………...….94 SQ. FT.

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Maverick Boat Group
3207 Industrial 29th St. • Fort Pierce, Florida 34946
(772)-465-0631 •cobiaboats.com
280 CC Deck Layout

5
Maverick Boat Group
3207 Industrial 29th St. • Fort Pierce, Florida 34946
(772)-465-0631 •cobiaboats.com
Pre-Operation Checklist
We recommend you print this document and store it at the helm station.

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Maverick Boat Group
3207 Industrial 29th St. • Fort Pierce, Florida 34946
(772)-465-0631 •cobiaboats.com
Maintenance & Cleaning
Maintenance
Cobia advises owners that maintenance and repairs should be performed at an
authorized Cobia Dealer. The following information is general in nature and should not
be considered a repair manual or guidelines set forth by Maverick Boat Group.
Cleaning
Each Cobia boat is constructed using the finest materials and components available.
However, no material is immune to the ravages of the saltwater environment. After each
use, your boat should be thoroughly washed using fresh water. To avoid water spots, dry
your vessel using a soft cloth. A fiberglass wax may be used to preserve the luster of the
hull.
Thorough and routine cleanings of your stainless fittings are required to maintain their
appearance. After each use of your boat, clean stainless fittings using fresh water and a
mild soap. Dry fittings completely. A wax or polish may be applied after cleaning. Any
rust must be removed as soon as possible to prevent irreversible damage to your vessel
and/or its components. A light coat of lubricant on metal railing, screws and electrical
connections will help prevent electrolysis. The same holds true for your trailer. Refer to
page 38 for upholstery care and cleaning instructions.

7
Maverick Boat Group
3207 Industrial 29th St. • Fort Pierce, Florida 34946
(772)-465-0631 •cobiaboats.com
Engine Break-In Period
Engine Break-In Period
New engines require a period of break-in to allow the surfaces of the moving parts to
mate evenly. Different engines require different break-in periods and methods. For
instructions on break-in methods, refer to your Yamaha Engine Owner’s Manual for the
correct break-in procedures and times for your model engines.
Engine Stop Switch
If activated, the spring-loaded engine stop switch
will automatically shut down the engine during
emergency situations to prevent uncontrolled or
unattended operation. Certain emergency
conditions (e.g., turbulent water, wakes,
unanticipated movement) may impair a person’s
ability to operate the craft safely. The switch, located
on the helm, must have the safety lanyard attached
at its base. This activates the protective shutdown
circuitry.
Securely attach the other end of the lanyard to the operator of the boat. If the operator
moves, falls or is at an unsafe distance from the steering wheel, tension on the lanyard
will pull it from the switch. When the lanyard is removed, the engine stop switch is
released and automatic engine shutdown occurs.
Engine Stop Switch
DANGER:
An engine stop switch system that is not used or does not function
properly can cause death or serious injury. DO NOT operate the boat if
the engine stop switch system does not function properly. Go to a
Cobia Dealer to have this resolved immediately.
The lanyard should be securely attached to the boat operator at all times that
the engine is on.

8
Maverick Boat Group
3207 Industrial 29th St. • Fort Pierce, Florida 34946
(772)-465-0631 •cobiaboats.com
Helm & Command Link Gauges
Switch Panel & Helm
At the helm of your Cobia, you have a main
switch panel, which is located above the
steering wheel. This panel controls your lights,
horn, accessories, livewell, and your bilge.
When a switch is in the “on” position, its tip is
illuminated. This alerts you that the associated
accessory should be functioning and also reminds you to turn it off
during boat shutdown. When the “NAV” light switch is in the “on”
position, the labels for the switches will be illuminated. To the right
of the steering wheel you have your two trim tab switches. (Refer to
page 21 for trim tab operation). The boat also comes standard with a
compass mounted on top of the console.
Command Link Gauges
Yamaha’s new 6YC Command Link gauge comes
standard on your new Cobia. This gauge allows
access to more information and is user-selectable so
you can choose the functions displayed. Speed data
can be displayed from a pitot tube, Triducer, or
NMEA protocol GPS unit. To learn the gauge’s full
functionality, refer to your Yamaha engine owner’s
manual located in the Cobia Duffel Bag.
Cobia Duffel Bag
Along with your boat, you received a Duffel Bag with your new Cobia. Inside the Duffel
Bag are the following items:
oLarge Livewell Standpipe
oShort Livewell Standpipe
o1.5” Livewell Pacifier Plug
o2 ignition Keys and Emergency Kill Cord /Engine Stop Lanyard
oEngine Start Cord
oVarious Accessories Manuals
Switch Panel
Compass
Yamaha Command Link Gauge

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Maverick Boat Group
3207 Industrial 29th St. • Fort Pierce, Florida 34946
(772)-465-0631 •cobiaboats.com
Fuel-Water Separator & Drain
Fuel-Water Separator
The Yamaha Fuel-Water Separators are installed behind
the rear access panel on the starboard transom side along
with the fuel system primer bulbs. The new, improved 10-
micron filter provides superior filtration ahead of the
engine's on-board filters and injectors.
Large filtering and water capture areas maximize filtration
while maintaining adequate flow rate for larger engines.
The fuel separator can be checked by removing it from the
mounting bracket and dumping it into an approved waste collection device. If there
appears to be an excessive amount of water, the filter component should be replaced.
See your authorized Cobia Dealer for replacement parts.
Garboard Drain Plug
The garboard drain plug is the small metal plug located at the
lowest point on the hull, at the bottom of the transom right above
the keel. The drain has been designed so that it can be loosened
by hand while the hull is out of the water for draining. This
allows the plug to stay in contact with the surrounding frame so
you’ll never misplace or lose it. You can completely remove the insert by pulling back
and continue turning in a counter-clockwise motion. It is manufactured with a rubber
seal in place to ensure your bilge is watertight. Always make sure before putting the boat
in the water that this plug is hand tightened firmly. Excess water in the bilge may be an
indication of a problem with this plug or the automatic bilge pump.
Drain Plug
Maintenance Note: Yamaha recommends replacing the 10-
micron fuel filter on new boats after the first 10 hours or 1 month of
operation and every 50 hours or every 6 months thereafter.In
areas of high humidity where water in fuel supplies is a problem or
extensive engine operation occurs, more frequent replacement
may be necessary.
Fuel-Water Separators

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Maverick Boat Group
3207 Industrial 29th St. • Fort Pierce, Florida 34946
(772)-465-0631 •cobiaboats.com
Bilge
Bilge Access
Accessing the bilge in your 280 is made easy. First, locate the controls on the electronic
lift assist, labeled “Hatch”, mounted on the starboard side of the tackle station directly
across from the gunwale. Next, press and hold the top button on the controls. This will
cause the rear access to lift revealing the bilge access. To lower the hatch simply press
and hold the bottom button on the control panel until the aft section is fully closed.
Remember that the electronic lift assist operates using the house battery system.
In the event that the boat does not have power to electronically lift the hatch, the
electronic lift can be disengaged by lowering the bench seat and using the access
opening shown below to remove the pin from the
electronic ram. Keep in mind that at this point the hatch
will no longer be supported in the up position and will
require being held up to maintain access to the bilge.
Once the work in the bilge is finished and power is
restored to the hatch lift, it is important to attach the ram
to the hatch with the pin once again to secure the door in
the closed position.
Note: The aft seat backrest must be removed to fully open the hatch.
Failure to remove the backrest will result in damage to the backrest
and possibly the hatch lifting mechanism.
Electric Ram and Hatch Pin
Electric Ram Override Access
Hatch Control
Bilge Access

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Maverick Boat Group
3207 Industrial 29th St. • Fort Pierce, Florida 34946
(772)-465-0631 •cobiaboats.com
Bilge
The bilge of your Cobia should always be checked before and after a launch. While
checking the bilge, note that a small amount of water in the bilge is normal. However, a
large amount of water or any signs of fuel or oil requires immediate attention. If such a
situation exists, the boat should be taken to
a certified marine technician immediately.
Never pump fuel or oil overboard while your
boat is in the water.
Large quantities of water in the bilge may be an
indication of a leak or that the bilge pump and/or
automatic float switch is not functioning properly
due to a jam, clog or electrical issue. The automatic
float switch is wired to the hot side of the battery
switch through the “BILGE” fuse at the battery switch
panel. When functioning properly, the float switch
activates the bilge pump to pump water overboard once
water in the bilge reaches a level that submerges the
switch.
If the bilge pump does not come on when the float switch
is submerged, attempt to manually turn it on through your
switch panel. If the bilge pump comes on and evacuates
the water, it is clear that the float switch is not functioning
properly. If the bilge pump does not come on via the
switch panel, check the breaker panel inside the console to
see if a breaker has been tripped. If the breaker has been
tripped, reset it and turn the switch on again, listening for the bilge pump to turn on.
If the bilge pump fails to turn on, turn the battery switch to the OFF position, then
unhook the bilge pump from its cradle by pressing the locking tab and twist motor
housing counter-clockwise. You will feel the pump release from the cradle. The entire
bilge pump and wiring should release from the cradle. After removing the pump, check
the underside and impeller areas for miscellaneous items that might clog the pump. If
any obstructions are present remove the debris and set the pump back into the cradle.
Once set back in the cradle, press the pump down on the base then twist until the lock
button snaps it into place. Once this is completed you can try to turn the pump on again.
Aft Bilge Pump and Float Switch
Fwd. Bilge Pump and Float Switch

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Maverick Boat Group
3207 Industrial 29th St. • Fort Pierce, Florida 34946
(772)-465-0631 •cobiaboats.com
If the bilge pump still does not turn on, it likely needs to be replaced. It is not
recommended to use your boat if the bilge pump and/or float switch are not functioning
properly.
Systems
Ball Valves
Ball valves can be used to serve several purposes.
They allow seawater to enter the boat, in the case of
livewells, and they also act as a safeguard to stop
water from entering. To tell which position a ball
valve is in, open or closed, look at the valve and
determine the direction of flow. When the ball
valve handle is in the same position as the
direction of flow, the valve is in the “OPEN”
position. When the ball valve handle appears to
cross the direction of flow, the valve is in the
“CLOSED” position. The ball valves can be accessed
in the bilge compartment behind the aft seating.
280 Deckdrain System
The deckdrain system is equipped with 1 1/2” thru hull fittings through the aft port and
starboard hull sides. These fittings have to be installed lower than the drains in the
cockpit floor so that gravity will allow the cockpit to drain free of water. This puts these
fittings very close to the water line of the hull. These drains are rigged with ball valves
that can be opened and closed to control the flow of water. In the open position, these
ball valves will allow water to flow freely from the cockpit, thus making the boat “self-
bailing”. When closed, no water will be allowed to travel to or from the cockpit.
280 Livewell Pump Assembly
The livewell pump assembly is composed of a scoop strainer
mounted to the bottom of the hull, a thru hull fitting, ball
valve assembly, and the pump. As you can see, the ball valve
assembly is in the “OPEN” position. This is the correct
position for the operation of the livewell.
Livewell Pump in the “Open” Position

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Maverick Boat Group
3207 Industrial 29th St. • Fort Pierce, Florida 34946
(772)-465-0631 •cobiaboats.com
Head Unit
Inside the console is the head unit. There are steps that lead into the head unit which
houses an electric head, fresh water sink with spray nozzle for rinsing off, switch panel
for flushing head, on-off switch for the macerator, and a lighted towel-rack bar. The
main DC breaker panel (for switch panel accessories) is inside along with two port hole
windows. There is also access to the macerator, y-valve, water intake and discharge for
the toilet and holding tank, and another access to the forward bilge. Lift the forward
console seat cushion for access to a built in 62 qt cooler.
Main Breaker Panel
Main Breaker Panel
Access to Forward Bilge
Area
Toilet & Macerator
Switch

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Maverick Boat Group
3207 Industrial 29th St. • Fort Pierce, Florida 34946
(772)-465-0631 •cobiaboats.com
Console/Head Access
Located at the top on the inside of the console/head
access door is a locking gas shock that aides in opening
the door and keeping the door open once the shock is
fully extended. With the door fully opened, it can only
be closed by releasing the pressure of the metal sleeve
on the door side against the shock that is mounted to
the console. To do this, open the door to its fullest open
position, thereby allowing the door slide sleeve to be
moved so that it will slide overtop of the gas shock as the door closes. Failure to release
this locking mechanism while attempting to close the door will lead to the gas shock
failing, or damage to the mounting brackets.
Electric Head
The macerator is to be used only with direct discharge thru hull. The macerator will not
be used for dockside pump out of the holding tank. To flush the head, make sure intake
valve is in the open position, supplying your head with the water it will need to operate
correctly. Then press the toilet switch and the waste is pushed into the holding tank. The
intake and discharge valves are located in the fwd bilge access area under the sink. The
macerator has nothing to do with the flushing of the toilet as it is only used for
overboard discharge while outside the legal dumping limits. To discharge outside legal
limits, open the thru hull discharge valve located behind the intake valve, turn the Y-
Valve so the arrow towards the macerator is exposed, and flip macerator switch to the
“ON” position. The Y-Valve and macerator pump are also located in the fwd. bilge access
area.
Macerator Pump
Y-Valve
Intake Valve (open)
Discharge Valve (open)
Gas Shock

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Maverick Boat Group
3207 Industrial 29th St. • Fort Pierce, Florida 34946
(772)-465-0631 •cobiaboats.com
The Jabsco Y-Valve is designed to provide flexibility of onboard waste management by
diverting waste either to the dockside pump-out fitting or directly overboard where legal
to do so. Check local and federal regulations to determine where direct overboard
discharge of untreated waste is permitted.
Some near shore areas and inland areas are designated as "No- Discharge Zones" where
the discharge of any onboard waste, even treated waste, is strictly prohibited. Many of
these areas require a waste retention system that can be positively secured
in an onboard retention mode.
The Jabsco Y-Valve accommodates this requirement by providing the ability to add a
padlock that secures the selector handle in either direction to ensure waste is directed to
an onboard holding tank. The Y-Valve may also be used to direct waste from a holding
tank to a waste deck plate for removal by a dockside pump-out facility.
Macerator Used for Pumping Direct
Overboard Discharge
Y-Valve Used to Direct Waste Discharge

16
Maverick Boat Group
3207 Industrial 29th St. • Fort Pierce, Florida 34946
(772)-465-0631 •cobiaboats.com
Ladder & Props
Stainless Boarding Ladder
This Cobia model comes standard with a telescoping stainless-steel boarding ladder
integrated into the port aft platform area. This provides a stepping area while the ladder
is in the up position. Once the ladder is down and in the extended position, close the lid
cover for safe and secure entry and exit via the ladder. When washing off your boat at
the end of the day make sure to extend the ladder and wash it off as well, making sure to
dry it completely before stowing. Leaving saltwater in the telescoping tubes may lead to
corrosion and affect the useful life of your ladder.
Props
Prop selection on your Cobia is determined by your local Cobia
Dealer, but all props are based on recommendations from Cobia
Boat Company and Yamaha Marine in order to give your boat
maximum overall performance. The needs of your prop will
determine the prop design and size that best fits your
performance requirements.
Always inspect the engine and prop prior to launching your boat with the engine off. Key
prop issues include tangled fishing line or other types of debris, cracked blades or fluid
Engine Prop
DANGER:
No passenger should attempt to enter or exit the boat by
the ladder or by any other means while the engine is on.

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Maverick Boat Group
3207 Industrial 29th St. • Fort Pierce, Florida 34946
(772)-465-0631 •cobiaboats.com
leaking out of the seal. Look for fishing line tangled around the prop or lower unit seal.
Consult your Yamaha Owner’s Manual to address these issues.
Fuel System
Fuel System
The Cobia 280 CC comes equipped with a 189-gallon
fuel cell stationed below the leaning post between the
stringer system. Every fuel tank is pressure tested at
the factory before and after installation. Should you
experience any fuel related problems or suspect
problems with the fuel system, immediately take your
boat to a Cobia Dealer.
The fuel sending unit and fuel pick up on the tank can
be accessed at the pie hole on the cockpit floor behind
the leaning post. The fuel vent and the fuel fill at the
tank can be accessed at the pie hole forward of the leaning post. The primer bulbs are
located next to the fuel-water separators in the bilge access hatch (see page 10).
DANGER:
Do not smoke while filling the tank. Be sure to turn off the engines
and all electrical equipment when fueling the boat to prevent
accidental discharges of static electricity. Use only the
recommended gasoline (see Yamaha Owner’s Manual). Do not
use fuels with alcohol or alcohol related derivatives that can
cause marine fuel system hoses to deteriorate.
Fuel Fill Receptacle

18
Maverick Boat Group
3207 Industrial 29th St. • Fort Pierce, Florida 34946
(772)-465-0631 •cobiaboats.com
Self-Bailing Cockpit & Livewell
Self-Bailing Cockpit
The cockpit is designed to be self-bailing, meaning that all the
water that comes into the cockpit will be directly drained
overboard. This keeps the boat from acquiring standing water
and allows the boat to drain at all times, including while the boat
is docked.
Water drains out of the cockpit through two aft cockpit drains
located at the far aft cockpit floor on both the port and starboard
sides. Each side drains overboard through the side of the hull
independently. None of this water is drained into the bilge. The
ball valves are located behind the aft seating. Refer to page 12 for operation of the ball
valve associated with this system.
The bilge is designed to drain any water entering the inside of the hull. All hoses are
sealed and double clamped during construction. Continuous or periodic running of the
automatic bilge pump may be an indication of a hose leak or break in a seal and should
be investigated by a Cobia Dealer immediately. Refer to page 10 for further information
regarding bilge pump operation and maintenance.
Livewell System
The livewell system is designed to keep your
baitfish alive and strong for as long as
possible. This 28-gallon livewell provides a
cool, clean, and oxygenated environment that
allows you to keep your baitfish alive for long
periods of time. To efficiently operate your
livewell, the following steps should be taken:
1. Open livewell hatch.
2. Install stand-up pipe snugly.
3. Ensure livewell pump ball valve is in open position.
4. Turn on livewell switch.
Cockpit Drain
Livewell

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Maverick Boat Group
3207 Industrial 29th St. • Fort Pierce, Florida 34946
(772)-465-0631 •cobiaboats.com
The livewell operates by pumping fresh seawater from the pump through an aerator
head into the livewell. Drainage is achieved through the grate on the top of the
standpipe, which, when unobstructed, will limit the water level to the standpipe’s
highest point. A shorter standpipe can be used to keep less water in the well. This
constant drainage keeps up water flow and allows for the removal of ammonia from the
livewell, therefore extending the life of your baitfish. To drain the livewell, switch off the
pump, close pump ball valve, and remove standpipe.
Rod Storage & Fish
Lockers
Rod Storage
The 280 Center Console model comes standard with
under gunwale rod racks on both the port and
starboard sides. These give you space to safely store
an additional 6 rods for your fishing needs.
Port and Starboard Fish Lockers
The 280 CC has two 47-gallon fish lockers built into
the aft cockpit floor on the port and starboard sides.
These are insulated, and each connected to a
macerator with the contents being dumped
overboard. The macerators are located in the bilge
on the inboard sides of the stringers. They can be
accessed through the bilge access hatch under the
aft folding seat. All lockers/hatches come standard
with gas shocks to assist in opening and holding the
latch open while loading or unloading.
Macerator Switches
The switches for each fish box macerator are located on the switch panel left of the
steering helm and are labeled accordingly. The pumps can only be operated
independently of each other.
Fish Locker
Starboard Gunwale Storage Rack
Fish Locker