“The mission of Boston Whaler is
to provide consumers with the
safest, highest quality, most durable
boats in the world”
INFORMATION IN THIS PUBLICATION IS BASED ON THE LATEST PRODUCT SPECIFICATIONS AVAILABLE AT PRINTING, BOSTON WHALER
®
BOATS, INC. RESERVES THE RIGHT
TO MAKE CHANGES AT ANY TIME WITHOUT NOTICE, IN THE COLORS, EQUIPMENT, SPECIFICATIONS, MATERIALS AND PRICES OF ALL MODELS, OR TO DISCONTINUE MODELS.
SHOULD CHANGES OR MODIFICATIONS TO THE MODELS BE MADE BOSTON WHALER
®
IS NOT OBLIGATED TO MAKE SIMILAR CHANGES OR MODIFICATIONS TO MODELS
SOLD PRIOR TO THE DATE OF SUCH CHANGES. THE FOLLOWING ARE REGISTERED TRADEMARKS OF THE BRUNSWICK CORPORATION:
180 DAUNTLESS, BOSTON WHALER
®
. MRP #1808102
Rev E 10/11/05
Boston Whaler founder
Richard T. Fisher demon-
strating one of the fea-
tures that has made Bos-
ton Whaler the “Unsink-
able Legend” in this
1961 LIFE Magazine
Photo.
Richard T. Fisher was
posthumously inducted
into the National Marine
Manufacturer’s Associa-
tion (NMMA) Hall of
Fame on September 26,
1996 for accomplish-
ments made in marine
engineering and con-
struction.
History
In 1958, company founder Richard T. Fisher introduced the first Boston Whaler boat in Braintree,
Massachussetts. It featured two significant innovations: first, its twin sponson hull design produced superior
stability and a remarkably dry ride; second, its unique foam core construction made the boat not only du-
rable, but unsinkable as well.
Fisher took every opportunity to illustrate the unique characteristics of the Boston Whaler. His most famous
demonstration was captured in 1961, by Life Magazine. The series of photographs showed the boat under-
way, the boat being sawed in half and ultimately Fisher motoring away in the remaining half of the boat. And
through the years many other demonstrations have proved the toughness and durability of the Boston Whaler
hull. And though you may never cut your boat in half, this only goes to show one thing, people whose
livelihood and lives depend on boats consistently choose Boston Whaler because of their seaworthiness,
dependablility and the inherent safety of a hull that won’t sink even if severely damaged.
Boston Whalers are built to last. For over 40 years Boston Whaler® has strived to make each model better,
providing you with a safe and fun boating experience. That is the reason we offer a 10 year limited transfer-
able warranty. It is also an excellent reason why you can trust the safety of your family and friends to a
Boston Whaler.
PLEASE KEEP THIS OWNER’S MANUAL PACKET IN A SECURE PLACE, AND BE SURE TO HAND IT OVER
TO THE NEW OWNER IF YOU SELL THE BOAT.
Section 1 - 255 Conquest
Table of Contents
Section 6-Raw Waste System
Raw Water, (Optional) 26
Operation/Maintenance 26
Section 7-Livewell System
Livewell, (standard/optional) 27
Operation/Maintenance 27
Bilge Pump 27
Operation/maintenance 27
Bilge Diagram 27
Section 8-Waste System
Head System 28
Shore Side Discharge 28
Macerator/Overboard Discharge
(Optional) 28
Maintenance 29
Environmental Considerations 29
Head System w/ Macerator & Overboard Discharge 29
Vacu-Flush Waste System 29
Section 9-Propulsion System
Propeller Information 30
Propeller Assembly Diagram 30
Hydraulic Steering Information 31
Operation/Maintenance 31
Power Steering Information 31
Gear shift/Throttle Control 32
Single Engine Throttle Control 32
Dual Engine Throttle Control 32
Digital Throttle & Shift (DTS®) 32
Power Trim Operation 33
Engine Starting Procedure 33
Section 10-Getting to know your Boston Whaler
Trim Tabs 34
Mooring Points 35
Lifting 35
Hull Maintenance 36
Hull Maintenance (Blisters) 36
Bottom Painting 36
Painted Hull Care(Bottom) 37
Vinyl Cushion Care 37
Long Term Storage 37
Engine 38
Fuel System 38
Trailer Storage 38
Electrical System 38
Drainage 38
Canvas Care & Maintenance 38
Trailer 39
Trailer Safety 39
Bunk Trailer Terminology 39
Section 11-Anchoring Information
Anchoring Information 40
Lowering The Anchor 40
Setting The Anchor 40
Weighing The Anchor 40
Section 12-Maintenance Log & Notes
Maintenance Log 41
Notes 41
255 Conquest-Owner’s Manual
Section 1-255 Conquest
Introduction 1
Table of Contents 1
Construction Standards 2
Our Hull 2
Servicing your Boston Whaler 2
Hull Identification Number 2
Section 2-General Arrangement & Specifications
Specifications & Dimensions 3
Standard Features, Exterior 4
Standard Features, Interior 5
Notable Options 6
Notable Options 7
Storage 8
Standard Seating 9
Canvas Arrangement, Suntop/Hardtop 9
Through-Hull Fittings 10
Deck Occupancy 11
Label Locations 12
Section 3-Fuel System
Fuel System 13
Fuel Fill 13
Fuel System Diagram 13
Fuel Vent 13
Empty Tank 14
Hoses & Fittings 14
Tank Cleaning 14
Primer Bulb 14
Remote Oil System 14
Static Electricity and the Fuel System 15
Section 4-Electrical System
Electrical System 16
Battery Information 16
Battery Box Location 16
Battery Maintenance 16
Dual Battery Switches 17
Battery Switches, Single Engine 17
Battery Switches, Dual Engine 18
12 Volt Accessory Receptacle 18
Console Wiring Diagram 19
Hull Wiring Diagram 20
Battery Switch Diagram 20
Side Pocket Switch Panel 21
Instrument Panel
Single Engine Gauge Panel 22
Dual Engine Gauge Panel 22
Verado 4-Stroke Engine Gauge Panel 22
Multi-System Tachometer/Speedometer 23
System View Monitor 23
Navigation Lighting 24
Ignition Shutdown Switch 24
Section 5-Freshwater System
Water System 25
Freshwater Pump 25
Freshwater Shower 25
Cabin Sink 25
Freshwater System Diagram 25
Maintenance 26
Disinfecting The System 26
Winterizing The System 26
This Owner’s Manual has been written to provide specific information about your boat and it should be read carefully. Keep this booklet with the
other Manuals in the Owner’s Manual Packet. The Owner’s Manual Packet has been compiled to help you operate your boat with safety and
pleasure. It contains details of the boat, the equipment supplied or fitted, it’s systems and information on it’s operation and maintenance. Please
familiarize yourself with the boat and it’s operation before using it. If this is your first boat, or you are changing to a type of boat you are not familiar
with, for your own comfort and safety, please ensure that you obtain handling and operating experience before “assuming command” of your boat.
Your Boston Whaler® dealer or local Yacht Club will be pleased to advise you of marine safety classes and safe boating classes in your area.
Introduction
1
Section 1 - 255 Conquest
255 Conquest-Owner’s Manual
2
Hull
Identification
Number
“THE MISSION OF BOSTON WHALER IS TO PROVIDE CONSUMERS WITH THE
SAFEST, HIGHEST QUALITY, MOST DURABLE BOATS IN THE WORLD”.
We are dedicated to creating a superior product providing you with comfort, performance, safety and dependability.
All of our boats comply with the safety standards set by the United States Coast Guard and are designed, engineered
and manufactured in accordance with applicable recommendations and guidelines of the American Boat and Yacht
Council (A.B.Y.C.) and certified by the National Marine Manufacturers Association (N.M.M.A.).
Construction Standards
Hull Identifcation Number
The “Hull Identification Number” is located on the
starboard side of the transom wall.
This is the most important identifying factor and must
be included in all correspondence related to your ves-
sel. Failure to do so will only create delays. Also of
vital importance are the engine serial numbers and
part numbers when writing about or ordering parts
for your engine.
Our Hull
Boston Whaler® hulls are constructed with our pat-
ented Unibond™ construction. This involves shoot-
ing high density foam into a closed mold system.
The foam expands to fill voids in the hull, and when
the finished product is pulled from the mold, the deck
and the hull are chemically bonded to form a solid,
inseparable unit.
2
3
4
1
1 No air voids
2 High density closed cell non-absorbent foam
3 High quality resins and gelcoats
4 Woven glass matting
When your 255 Conquest needs to be serviced or
regular maintenance is needed, it should be taken to
an authorized Boston Whaler® dealer.
To find a Boston Whaler® dealer in your area call:
1-800-942-5379
Domestic/International
If a problem is not handled to your satisfaction:
Discuss any warranty related problems directly
with the service manager of the dealership or your
sales person. Give the dealership an opportunity
to help the service department resolve the matter
for you.
Servicing your Boston Whaler
Typical H.I.N. Description
Section 2 - General Arrangement & Specifications
255 Conquest-Owner’s Manual
Overall Length 26’11” 8.20 m
Trailerable Length 31’0” 9.44 m
Bridge Clearance 9’5” 2.87 m
Bridge Clearance (no top)7’3” 2.21 m
Beam 8’9” 2.74 m
Draft, (Hull Only) 16” .40 m
Weight (dry, no engine) 4900 lbs. 2222 kg
Swamped Capacity 6100 lbs 2766 kg
Maximum Engine Weight 1220 lbs. 553 kg
Maximum Weight, (passengers,
engine(s), gear,** 4300 lbs 1950 kg
Persons 14
Maximum Horsepower 450HP 335 kw
Minimum Horsepower 225 HP 167.8 kw
Fuel Capacity 150 gal.(U.S.) 567 L
Water Capacity 20 gal.(U.S.) 76 L
* Waterline
*** Engine Draft,(See Notice)
Specifications & Dimensions
3
26’11”
8’9”
7’3”
16”
9’5”
*
Specified measurements are approximations and are
subject to variance.
NOTICE
!
Note: The hard-top shown here
is for reference purposes only.
***
31’0”
NOTICE
!
Optional equipment and loading of the boat will af-
fect the draft measurements. Follow the recommen-
dations listed on your capacity plate regarding the
maximum amount of weight the boat can safely
carry.
***
24’8”
Exceeding this weight will affect the bost’s perfor-
mance. DO NOT Exceed the weights listed on the
capacity plate.
NOTICE
!
**
255 Conquest-Owner’s Manual
Section 2 - General Arrangement & Specifications4
255 Conquest
Standard Features, Exterior
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18 19
20
22
21 23 24
25
26
27
28
30
31
32
33
34
35
36
38
39
29
37
1 Bow pulpit w/ roller
2 Heavy duty rub rail
3 8” cleat bow (2), stern (2), spring (2)
4 Stainless steel bow rail
5 Forward seating area w/ cushion
6 Opening hatch w/ screen
7 Aluminum framed windshield
8 Lockable cabin door
9 Companion seating w/ cushion & slide
10 Aft facing seat w/ storage under, port
11 Self bailing cockpit
12 Fuel fill
13 Port fishbox w/ drain
14 Gunwale mounted rodholders, (2)
15 Aft foldaway seat
16 Livewell w/ drain
17 Freshwater fill
18 Port access hatch
19 Motorwell access hatch, (2)
20 Motorwell
21 Steering control lines
22 225 OptiMax Mercury Engine
23 Motorwell drains, (2)
24 Oil fill
25 Telescoping ladder access door
26 Freshwater shower nozzle
27 Transom door
28 Starboard fishbox w/ drain
29 Waste discharge deck plate
30 Aft facing seat w/ cooler under, starboard
31 Cockpit floor storage
32 Helm seat w/ cushion & slide
33 Gear shift throttle control
34 Stainless steel steering wheel
35 Hydraulic tilt steering system
36 Starboard windshield wiper
37 Forward navigation lights
38 Bow anchor locker w/ drain
39 Horn, (under pulpit)
12
255 Conquest-Owner’s Manual
Section 2 - General Arrangement & Specifications 5
255 Conquest
Standard Features, Interior
1
2
3
4
56
7
8
910
11
1314
15
16
17
1 Rodholder, Port and Starboard Cabin
2 Porta-Potti w/ Deck Pump-out
3 Molded Footrest
4 In-Deck Storage, Forward
5 150 Gal. (567L) Fuel Tank
6 Cockpit Rodholders w/ Toerail, Port & Starboard
7 Battery Switches
8 Battery Boxes, Port & Starboard
9 VRO Tank, 3 gal. (11.3L)
10 20 Gal. (76L) Freshwater Tank
11 Starboard Cabin Cushion w/ Storage Under
12 Forward Cabin Cushion w/ Storage Under
13 Port Cabin Cushion w/ Storage Under
14 V-Berth/Table Cushion & Pedestal
15 Wet Bar Sink & Faucet
16 Step To/From Cabin
17 Trim Tabs, Hydraulic
255 Conquest-Owner’s Manual
Section 2 - General Arrangement & Specifications6
Notable Options
1
2
3
4
5
78 9
10
11
12
13
14
1516 17
19
24
21
22
23
20
1 Canvas Sun-top, Red or Blue
2 Metal, Tubular Frame
3 Canvas, Forward Visor
4 Canvas, Aft Drop Curtain
5 Canvas, Side Surtain, Port & Starboard
6 Anchor Windlass
7 Radial Outriggers, Port & Starboard
8 Hard-top Electronics Box
9 Hard-top
10 Hard-top, Forward Visor
11 Hard-top Rodholders, (4)
12 Hard-top, Aluminum Frame
13 Hard-top Side Curtain, Port & Starboard
14 Hard-top, Aft Drop Curtain
15 Macerator
16 Overboard Discharge Seacock
17 Deck Pump-out Fitting
18 Waste Vent
19 Porta-Potti w/ Deck Pump-out & Overboard
Discharge
20 Holding Tank, Vacuum
21 Vacu-Flush Head
22 Shore Power Outlet
23 Shore Power Switch Panel
24 Butane Stove
6
18
4
5
6
7
8
255 Conquest-Owner’s Manual
Section 2 - General Arrangement & Specifications 7
Notable Options
1
2
3
1 AM/FM Stereo w/ CD
2 2 Speakers in Cabin, 2 in Cockpit
3 VacuFlush® Head System, (holding tank,dock-
side pump-out w/ overboard discharge).
4 Tackle Drawer, Port/Starboard
5 Cockpit Coaming Bolsters
6 Raw Water Washdown Connection
7 Gunwale Mounted Rodholders, Port/Starboard
8 Livewell w/ Light & Raw Water Fill
9 Aft Mounted Rodholder
9
10 150 CXL OptiMax Dual Engines
11 150 CXL Verado 4-Stroke Engine*
12 175 CXL Verado 4-Stroke Engine*
13 250 XXL Verado 4-Stroke Engine*
14 275 XXL Verado 4-Stroke Engine*
*These options include Digital Throttle & Shift,
Smart Craft System View Display and Power Assisted
Steering
10
11
1213
14
Section 2 - General Arrangement & Specifications8
255 Conquest-Owner’s Manual
255 Conquest Storage
7
89
10
11
12 13
14
6
1
2
3
4
5
15
1 Starboard V-berth storage
2 Cabin rod rack, starboard
3 Forward V-berth storage
4 Cabin rod racks, port
5 Port V-berth storage
6 Port side panel storage
7 Starboard side panel storage
8 Aft cockpit mechanical storage
9 Port in-deck insulated fishbox
10 Under seat storage w/ drain
11 Cockpit floor storage
12 Starboard in-deck insulated fishbox
13 Under seat, insulated cooler w/ drain
14 Anchor locker w/ drain
15 Fire extinguisher pocket
255 Conquest-Owner’s Manual
Section 2 - General Arrangement & Specifications 9
255 Conquest Standard Seating
7
8
9
10
1 Companion seat w/ cushion & slide
2 Aft facing seat, port
3 Aft foldaway seat
4 Aft facing seat, starboard
5 Helm seat w/ cushion & slide
6 Forward seating area
7 Port cabin seating w/ cushion & storage under
8 Forward cabin seating w/ cushion & storage under
9 Starboard cabin seating w/ cushion & storage
under
10 Cover & cushion over porta-potti
3
2
1
6
4
5
The sun-top canvas must be secured in can-
vas boot before trailering.
NEVER TRAILER THE CANVAS TOP IN THE
OPEN POSITION.
NOTICE
255 Conquest Canvas, Suntop/Hardtop
DANGER
CARBON MONOXIDE DANGER
Prolonged exposure can cause serious injury
or death. To reduce CARBON MONOXIDE
accumulation, increase air movement by
opening windows or adjusting the canvas to
allow for more air circulation
!
!
1 Aft drop curtain, (black or blue)
2 Side curtains, port & starboard, (black or blue)
3 Forward visor, (black or blue)
4 Canvas sun-top, (black or blue)
5 Aft support pole, Stainless steel
6 Forward support pole, Stainless steel
7 Aft drop curtain, (black or blue)
8 Side curtains, port & starboard, (black or blue)
9 Forward visor
10 Hard-top
11 Aluminum frame
1
2
3
4
5
6
7
8
9
10
11
255 Conquest-Owner’s Manual
Section 2 - General Arrangement & Specifications10
The deck drain provides self-bailing capabilities while the
boat is static in the water and no passengers on board.
This feature prevents the accumulation of water in the
cockpit. the drain must be in place when underway.
NOTICE
!
Depending on the type of boat you have, you may
have underwater fittings that need drain plugs.
Garboard drain plugs and fishbox drain plugs need
to be in place before the boat goes into the water.
Any fitting that will be underwater needs to be
plugged or the seacock needs to be closed
NOTICE
!
Through hull fittings should be checked for proper
seal annually. When the boat is in the water the un-
derwater fittings can be checked for dripping. It is
recommended that the underwater fittings be re-
moved, cleaned and resealed every other year.
NOTICE
!
If the through hull fittings need to be replaced, it is
recommended that an authorized Boston Whaler ®
dealer perform this type of repair. Through hull fit-
tings that are improperly installed can cause pre-
mature hull failure and may void the Boston
Whaler® limited warranty.
NOTICE
!
1 Anchor Locker Drain
2 Waste System Vent
3 Starboard Fishbox Drain
4 Raw-water Intake
5 Fishbox Pump Outlet, Starboard (optional)
6 1100 GPH Bilge Pump Outlet
7 Cabin Sink Drain
8 Fuel Vent
STARBOARD
PORT
255 Conquest Through-Hull Fittings
AFT
1
2
3465
7 8 910
11
12
15
13
13
14
9 Port Fishbox Drain
10 Macerator Pump Outlet, (optional)
11 Fishbox Pump Outlet, Port (optional)
12 Transom Deck & Livewell Drain
13 Motorwell Drain, (2)
14 Garboard Drain
15 Deck Drain
255 Conquest-Owner’s Manual
Section 2 - General Arrangement & Specifications 11
Be aware of your footing while the boat is underway,
slipping or falling could result in serious injury or death,
especially if the boat is in motion or in rough seas.
Keep the accomodation deck clean, so if movement
is neccessary it will be free of obstruction.
DANGER
Gelcoat surfaces are slippery when wet. Use ex-
treme caution when walking on wet surfaces.
WARNING
Deck Occupancy
WARNING
!
!
!
Never occupy the working decks while the boat is
underway.
Accomodation deck:
This area of the boat is inside the
cockpit and includes helm seating.
Movement in this area should be
done with extreme caution while the boat is under-
way. A sudden shift in boat direction can cause a loss
of balance and lead to injury or death.
Working deck:
This area is intended for occupation
ONLY while mooring, anchoring,
loading/unloading or when the boat
is at rest. NEVER operate the engine while loading
or unloading swimmers/divers from the swim plat-
form/ladder.
LABEL, DANGER CO TRANSOM
LABEL, DANGER CO TRANSOM
1799311
1799311
LABEL, CAUTION OIL TANK LEVEL
LABEL, CAUTION OIL TANK LEVEL
LABEL, PROP 65 HANG TAG
LABEL, PROP 65 HANG TAG
1811367
1811367
1017144
1017144
PLATE, BW-03 MAX ENG WT 1220LB/553KG
PLATE, BW-03 MAX ENG WT 1220LB/553KG
1811368
1811368
1735929
1735929
1795087
1795087
LABEL, WARNING CO CABIN
LABEL, WARNING CO CABIN
1812911
1812911
PLATE, SAFETY CANADIAN CONFORMITY BW255CQ-03
PLATE, SAFETY CANADIAN CONFORMITY BW255CQ-03
1746027
1746027
DECAL, MERC SMARTCRAFT NETWORKED
DECAL, MERC SMARTCRAFT NETWORKED
1743323
1743323
1744737
1744737
1745156
1745156
1691003
1691003
1743504
1743504
1752857
1752857
1743548
1743548
WARNING CO HELM
WARNING CO HELM
Section 2 - General Arrangement & Specifications12
255 Conquest-Owner’s Manual
Label Locations
5
6
3
8
11
10
15
14
1920 21
1
17
18
4
3
17
OR
16
4
12
13
ON INTERIOR SURFACE
OF CABIN DOOR
2
7
9
255 Conquest-Owner’s Manual
Section 3 - Fuel System 13
The 255 Conquest is equipped with a
gasoline fuel system. Please take time
to read and understand all the fuel re-
lated information and warnings in the
engine owner’s packet. The diagrams
below show the location of the fuel fill, routing of
fuel supply hose and the location of the fuel tank
vent.
GENERAL
FUEL,
1
2
3
4
6
7
5
8
Fuel Fill
The 255 Conquest fuel fill is located in the port side
of the gunwale, it is marked “GAS”, and is opened
by use of a special key that is included with the
owner’s manual packet.
Follow the engine manufacturer’s recommendation
for the types of fuel and oil to use.
Fuel Vent
The fuel tank has a fuel tank vent located amidship,
7-9” inches below the rub rail directly below the fuel
fill caps. The fuel tank vent serves as a pressure/
vacuum release, safety overflow and flame arrestor.
Access to the vent fitting is through twist-out plate
located inside the cockpit opposite the fuel tank vent.
Check the vent assembly regularily as part of a main-
tenance schedule for continued safe operation of your
boats fuel system. The Vent assembly consists of a
255 Conquest Fuel System Diagram
1 Fuel fill plate (port side gunwale)
2 1.5” fuel fill hose
3 Fuel vent
4 150 Gal.(567.75L) polyethylene fuel tank.
5 Ground wire to forward buss bar
6 Fuel supply line to engine.
7 Fuel supply (to optional engine)
8 3 Gal. (11.4 L) Remote oil system tank
Fuel System
CAUTION
!
Leaking fuel is a fire and explosion hazard, inspect the
system regularly. Examine fuel tanks and exposed lines
for leaks and corrosion.
DANGER
!
Check for leaks in tubing, connections and hoses. Cor-
rect the cause of the leaks and ventilate the area to
insure that no fumes remain, prior to energizing any
electrical equipment and/or starting the engines.
CAUTION
!
Use of improper gasolines can damage your engine se-
riously. Engine damage resulting from use of improper
gasoline is considered misuse of engine and will void
the warranty. Follow engine manufacturer’s recommen-
dations regarding the types of fuel and oil to use.
CAUTION
!
Oil and fuel spills can be dangerous and can subject
offenders to severe penalties
NOTICE
!
Remove portable tanks from boat and fill from shore.
When fueling is complete, secure tanks to deck with
straps provided.
DANGER
!
Static electricity can ignite gasoline vapors causing
serious injury/death and/or destruction of property.
NOTICE
!
Fuel tanks should never be filled to capacity, allow 2%
for expansion.
Section 3 - Fuel System14
255 Conquest-Owner’s Manual
backshell, starwasher, nut and hose clamp. Remove
the hose clamp, nut, starwasher and backshell and
push the fuel vent fitting out. The fuel vent has four
screens that are held in by a ring. Use a small pick to
dislodge the ring to remove the screens and clean as
required.
EMPTY TANK:
A fuel tank with levels less than 1/4 full can cause
problems by stalling an engine due to fuel starvation
or by allowing sediment and dirt to enter the fuel
supply lines. Keeping the tank filled will reduce the
chance of this occurance; since the residue will most
likely settle to the bottom of the tank. Monitor the
fuel level often to prevent this from happening.
HOSES AND FITTINGS:
Hoses and fittings should be inspected at least every
100 hours. Check the hoses for cracks, abrasions and
deterioration and the strong smell of fuel prior to
starting the engine(s). If the hoses or fittings are dam-
aged or worn, replace them with only marine grade
replacement parts. Your authorized Boston Whaler®
dealer will have all the parts information you will
need.
TANK CLEANING:
Excessive water and sediment may force you to con-
sider having the tank professionally cleaned. If you
are frequently changing fuel filter/water separators
and notice a loss in power, consult a professional
tank cleaning contractor regarding this procedure and
proper disposal of residue and water.
PRIMER BULB:
There is a primer bulb that can be accessed in the
portside of the motorwell. There are also instructions
regarding proper use of the primer bulb. The primer
bulb is used to draw fuel from the tank to the engine,
usually after the fuel has been drained from the en-
tire system.
Remote Oil System
The 255 Conquest is equipped with a remote oil sys-
tem. This system consists of a single 3- Gal.(11.3L)
reservoir tank and hoses which contain and meter
lubricating oil to the engine. There is a second tank
added when the dual engine option is used. The tank
has an external fill located on the aft side of the cock-
pit transom wall. Access to the tank can be reached
through the motorwell access hatch. When recapping
the fill make sure that it is secure to prevent spills
and to prevent the intrusion of water into the system.
Your remote oil tank is secured by a nylon strap and
quick release clip. Little maintenance is required for
the remote oil system, aside from checking the hoses
for abrasions and cracks and hose clamps for proper
tightness. The tank should not be exposed to ultra-
violet light, rain or seawater for extended periods of
time.
(3) gallon remote
oil tank location
Oil fill
(to deck)
Engine supply
Hull
mounted
fuel vent
with screen
To Engine
Primer
bulb (Port side)
255 Conquest-Owner’s Manual
Section 3 - Fuel System 15
There is a danger that static electricity can ignite gaso-
line vapors that have not been ventilated outside an
enclosed area. Use extreme caution when fueling
your boat from a source outside the regular venues,
(e.g. marinas, fuel service stations.)
Your boat has safety features that can be circum-
vented by not adhering to standard fueling practices.
Your boats bonding system protects it from creating
and discharging static electricity.
Your boat must be in contact with the water or a land
based grounding system. Here are some helpful sug-
gestions to keep you safe from static electricity while
refueling your boat.
• NEVER fuel your boat in unsafe conditions such
as: suspended on a sling or in a situation that in-
creases the likelihood of static discharge.
• NEVER use homemade containers to fill your fuel
tanks.
• Fuel carried on-board outside of a fixed fuel sys-
tem should be stored in an approved container or
in a portable tank such as provided for outboard
engines and be stowed safely outside of the engine
or living compartment(s).
• Shut down the engine(s), motors and fans prior to
taking on fuel. Any ignition sources should be ex-
tinguished before filling the fuel tank(s).
• Close all ports, windows, doors and hatches.
• Fueling should never be done at night except in
well-lighted areas.
• Always keep the fuel nozzle in contact with the
fuel fill plate or the edge of the fuel tank opening
throughout the filling process.
• Allow areas where gasoline vapors could collect
to be ventilated before starting the engine(s).
• Wipe any spillage completely and dispose of rags
or waste on shore.
• Secure the fill cap tightly.
• Fuel tanks should never be filled to capacity. al-
low 2% for expansion.
• Portable tanks should only be filled while on the
ground; never on-board the boat.
Static Electricity and the Fuel System
Section 4 - Electrical System16
255 Conquest-Owner’s Manual
Electrical System
Battery Information
Your 255 Conquest is equipped with
an electrical system that provides
power for the following:
• Engine ignition
• Engine tilt trim system
• Helm switch panel & helm instrument panel
• Lighting/Navigation system
• Livewell system
• Add-on accessories and electronics
The system consists of the following components:
• Battery boxes, (2 standard)
• Dual Battery switches
• Main & Branch circuit breakers
• Helm Ignition, Switch & Instrument Panel
BATTERY
-
+
BATTERY BOX LOCATION:
The battery boxes are located under the aft cockpit
hatch. Batteries should always be enclosed in the cov-
ered battery boxes provided with your boat. The box
will contain any spilled acid, as well as protect the
battery terminals from damage or inadvertant short-
ing from coming in contact with metal objects. Each
battery box should always be secured in place by us-
ing the straps and clamps provided, the straps will
ensure that while underway the battery will not move
around, causing damage to components stored in the
same area.
Battery Maintenance
Battery maintenance should include:
• Inspect each battery and charging system be-
fore use; for loose connections or wiring.
• Coat the terminals with dielectric grease.
• Keep the batteries dry.
• Remove the batteries from the boat during cold
weather or long term storage.
The most life shortening experience for the battery
is to be drained to zero charge before recharging.
When a battery discharges, the active material on both
positive and negative plates converts to lead sulfate,
causing the plates to become more alike in an elec-
trical charge. The electricity conducting battery acid
becomes weaker and the voltage drops. As the bat-
tery remains discharged, the process continues until
recharging the battery becomes impossible.
Battery Box
Release Strap
Tie-down
strap
Never reset a breaker without first determining and
correcting the cause of the trip. Should a circuit re-
peatedly trip, have a qualified electrician determine and
correct the cause.
• Never use an open flame in the battery storage area.
• Avoid striking sparks near the battery
• A battery will explode if a flame or spark ignites
the free hydrogen given off during charging.
• The battery should always be disconnected before doing
any work or maintenance on the electrical system.
If equipped with a battery switch, you will need to stop
the engine before moving the switch to the “OFF” posi-
tion.
Batteries contain sulfuric acid which is dangerous and
can cause serious injury.AVOID contact with skin, eyes
and clothing. If contact occurs, immediately flush the
affected area with large quantities of water and call
for medical assistance.
Always store the battery in the the battery box. Use the
straps and clamp to keep the box secure while under-
way.
CAUTION
CAUTION
CAUTION
DANGER
NOTICE
!
!
!
!
!
ALL
2
1
OFF
Section 4 - Electrical System
255 Conquest-Owner’s Manual
17
Your 255 Conquest uses a pair of battery selector
switches to control delivery of DC power from two
batteries. The battery switches are located on the
starboard bulkhead in the aft cockpit compartment.
The dual battery switch has four (4) settings:
• “OFF”, you will have no power to the
engine(s).
• “ALL”, you will have power from both bat-
teries at the same time. This parallels the bat-
teries to assist you in starting the engine(s),
once the engine is started the battery switch
should be taken off of the “ALL” setting, and
set to charge either battery .
• “1”, you will have power from the port bat-
tery only.
• “2”, you will have power from the starboard
battery only.
When the engine is shut down or not providing a
charge, the system will allow isolation of the star-
board (house) battery. This will allow you to run all
the boats functions without affecting the port bat-
tery. You can run the house battery flat and still start
the engine.
Dual Battery Switches
Selector Knob
“Battery 1”
Selection
“Battery 2”
Selection
Batteries
“OFF”
Selection
Batteries
“ALL”
Selection
Battery
Selector
Switches
ALL
2
1
OFF
Single Engine
Installation
Both batteries un-con-
nected, Preferred position
when boat is not in use.
ALL
2
1
OFF
Normal position while
engaging in normal en-
gine operations.
ALL
2
1
OFF
To parallel batteries, set
switch to the “ALL” posi-
tion, return to normal op-
erating positions after
starting.
Use this position only if both batteries are near the
same voltage. If one battery is strong and the other
weak, high current could cause battery damage.
WARNING
!
Section 4 - Electrical System18
255 Conquest-Owner’s Manual
Dual Engine Installation
Both batteries un-connected, Preferred position
when boat is not in use.
PORT
ENGINE
STARBOARD
ENGINE
ALL
2
1
OFF
ALL
2
1
OFF
ALL
2
1
OFF
ALL
2
1
OFF
Normal position while engaging in normal engine
operations.
ALL
2
1
OFF
ALL
2
1
OFF
To parallel batteries, set both switches to the
“ALL” position, return to normal operating posi-
tions after starting.
Do not operate boat with batteries in parallel, seri-
ous engine electrical damage may result.
WARNING
Bilge pump still draws power from the batteries,
even if the switches are set to “OFF”.
WARNING
12 Volt Accessory Receptacle
Your 255 Conquest is equipped with a 12 volt acces-
sory receptacle located on the side pocket switch
panel. It is a DC (cigarette lighter) style receptacle
to be used with any 12 volt accessories using this
type of plug. The receptacle is made of corrosion re-
sistant marine grade materials and has a moisture
proof cap. There is a 10 amp breaker button located
just above the receptacle. Be sure to use accesso-
ries that do not exceed the rated capacity of the
circuit, (10 amps) or the breaker will trip.
12V Accessory
receptacle
!
!
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