Honda BF25 А, BF30 А Owner's Manual

California Proposition 65 Warning WARNING: Engine Exhaust, some of its constituents, and certain vehicle components contain or emit chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
Keep this owner’s manual handy, so you can refer to it at any time. This owner’s manual is considered a permanent part of the outboard motor and should remain with the outboard motor if resold.
The information and specifications included in this publication were in effect at the time of approval for printing. Honda Motor Co., Ltd. reserves the right, however, to discontinue or change specifications or design at any time without notice and without incurring any obligation whatever. No part of this publication may be reproduced without written permis­sion.

INTRODUCTION

Congratulations on your selection of a Honda outboard motor. We are certain you will be pleased with your purchase of one of the finest outboard motors on the market.
We want to help you get the best results from your new outboard motor and to operate it safely. This manual contains the information on how to do that; please read it carefully.
As you read this manual, you will find information nreceded bv a m
I
d I
,
symbol. That information is intended to help you avoid damage to your outboard motor, other property, or the environ­ment.
We suggest you read the warranty policy to fully understand its coverage and your responsibilities of ownership. The warranty policy is a separate document that should have been given to you by your dealer.
When your outboard motor needs scheduled maintenance, keep in mind that your Honda marine dealer is specially trained in servicing Honda outboard motors. Your Honda marine dealer is dedicated to your satisfaction and will be pleased to answer your questions and concerns.
0 2000 Honda Motor Co., Ltd.
All Right Reserved
1
INTRODUCTION
A FEW WORDS ABOUT
SAFETY
Your safety and the safety of others are very important. And using this outboard motor safely is an important responsibil­ity.
To help you make informed decisions about safety, we have provided operat­ing procedures and other information on labels and in this manual. This informa­tion alerts you to potential hazards that could hurt you or others.
Of course, it is not practical or possible to warn you about all the hazards associated with operating or maintaining an outboard motor. You must use your own good judgment.
You will find important safety information a variety of forms, including:
l Safety Labels - on the outboard motor.
.
Safety Messages - preceded by a safety alert symbol A and one of three signal words, DANGER, WARNING, or CAUTION.
These signal word’s mean:
You WILL be KILLED or SERIOUSLY HURT if you don’t follow instructions.
You CAN be KILLED or SERIOUSLY HURT if you don’t follow instructions.
l Safety Headings - such as IMPORTANT SAFETY INFORMATION. l Safety Section - such as OUTBOARD MOTOR SAFETY. l Instructions - how to use this outboard motor correctly and safely.
This entire book is filled with important safety information - please read it carefully.

TYPES OF HONDA BF25A/30A OUTBOARD MOTORS

It may be necessary to refer to this chart for reference purposes when reading this manual.
TYPE CODE
I S = Electric Starter
Control H = Tiller Handle R = Remote
Shaft Length (transom height) S = Short L = Long X = Extra Long
3
IDENTIFICATION NUMBERS
RIGHT STERN BRACKET
PRODUCT IDENTIFICiTION NUMBER
Record the Product Identification Number (R1.N.) and the Engine Serial Number for your reference. Refer to the Product Identification Number
when ordering parts, and when mak­ing technical or warranty inquiries (see page 102).
STARTER MOTOR
ENGINE SERIAL NUMBER
The Product Identification Number is stamped on a plate and attached to the right stem bracket. The Engine Serial Number is stamped on the cylinder block under the starter motor which is
located in the front of the engine.
Product identification number:
Engine serial number:

CONTENTS

1. OUTBOARD MOTOR SAFETY IMPORTANT SAFETY INFORMATION SAFETY LABEL LOCATIONS
COMPONENT IDENTIFICATION
2.
...............................
............................
...............
3. CONTROLS
TILLER HANDLE TYPE
Engine Start Button Gearshift Lever Choke Knob.. Throttle Grip.. Throttle Opening Indicator Throttle Friction Engine Stop Switch Emergency Stop Switch Lanyard Oil Pressure Indicator Light
.................................................... 13
........................................................... 13
..............................................................
............................................................. 14
.........................................
Knob ............................................... 14
....................................................
...............................
.......................................
Recoil Starter.. ............................................................
REMOTE CONTROL TYPE
Remote Control Lever Neutral Release Lever
Ignition Switch Emergency Stop Switch Lanyard Choke/Fast Idle Lever
Manual Choke Knob
Oil Pressure Indicator Light/Buzzer..
Overheat Indicator Light/Buzzer..
................................................
................................................
........................................................... 18
...............................
................................................ 20
..................................................
.........................
..............................
7 9
10
13 14 15
15 16
16 17
18 19 20
21 21
CONTROLS & INSTRUMENTS (common)
Tilt Lever Trim Anode Cooling Water Transom Angle Adjusting Rod Fuel Cap/Gauge/Vent Knob Engine Over-Rev Limiter..
....................................................................
Tab.. ...................................................................
Metal ...............................................................
System Indicator..
.........................................
Intakes.. ............................................................
..................................
.......................................
.........................................
4. INSTALLATION Installation Installation Installation Motor Engine Cover Removal
..................................................................
Position ....................................................
Height ......................................................
Attachment ......................................................
Installation
...........................
5. PRE-OPERATION CHECKS Engine Fuel Fuel Oxygenated Propeller and Cotter Pin
Oil ..................................................................
Level ...................................................................
Recommendations ..............................................
Fuels .......................................................
.............................................
Steering Friction Adjustment (common). Remote Control Friction Adjustment
.........................
Other Checks
.................................................................
Hose
l
Fuel
l
Stern Bracket/Clamp/Screws
...................................
...................
22 22 23 23 23 24 25 25
26 26 26 27 28
29 30 3 1 32 33 33 34
34 34
5
CONTENTS
l
Tool Kit ....................................................................
l
.......................................................................
Anode
6. STARTING THE ENGINE
Fuel Tank and Vent Knob .......................................... 35
Fuel Line Connection
.................................................
Starting the Engine (TILLER HANDLE TYPE)
Starting the Engine (REMOTE CONTROL TYPE). ... 41
Emergency Starting
....................................................
Troubleshooting Starting Problems ............................
7. OPERATION Break-in Procedure
.....................................................
TILLER HANDLE TYPE
Gear Shifting Steering
.............................................................. 51
.......................................................................
Cruising ...................................................................... 52
REMOTE CONTROL TYPE
Gear Shifting .............................................................. 53
Cruising ...................................................................... 54
Tilting Motor
Tilt Lever.. .................................................................. 55
Trim Tab Adjustment ................................................. 58
MOTOR PROTECTION SYSTEM
Engine Oil Pressure and Overheat Warning System
.........................................
Over-Rev Limiter ....................................................... 61
Anode
.........................................................................
High Altitude Operation ............................................. 62
.......
34
34
35 37
44 49
50
52
59 61
8. STOPPING THE ENGINE TILLER HANDLE TYPE
REMOTE CONTROL TYPE
9. TRANSPORTING
.....................................................
10. CLEANING AND FLUSHING
11. MAINTENANCE
.......................................................
.......................................
..................................
.................................
THE IMPORTANCE OF MAINTENANCE
MAINTENANCE SAFETY
....................................
EMISSION CONTROL SYSTEM INFORMATION
STAR LABEL
Tool Kit and Spare Parts
MAINTENANCE SCHEDULE Engine Oil Gear Oil
.................................................................. 73
..........................................
..............................
................................................................
....................................................................
Spark Plugs ..............................................................
Battery (not included) Lubrication
...............................................................
Engine Fuel Filter Fuel Tank and Filter Fuse Replacement
Propeller
...................................................................
Submerged Motor
12. STORAGE
.................................................................
13. TROUBLESHOOTING
14. SPECIFICATIONS
15. WARRANTY SERVICE
16. WIRING DIAGRAM
17. INDEX
.......................................................................
..............................................
....................................................
.................................................
....................................................
....................................................
.............................................
....................................................
...........................................
.................................................
63 65 66 67
69
.......... 69
69
...... 70
;i
78 ;:
83 84
86 ;:
90
;: 95
97 102 103 106
6
1. OUTBOARD MOTOR SAFETY

IMPORTANT SAFETY INFORMATION

Honda BF25A and BF30A outboard motors are designed for use with boats that have a suitable manufacturer’s power recommendation, and other uses can result in injury to the operator or damage to the outboard motor and other property.
Most accidents can be prevented if you follow all instructions in this manual and on the outboard motor. The most common hazards are discussed below, along with the best way to protect yourself and others.
Operator Responsibility
l It is the operator’s responsibility to
provide the necessary safeguards to protect people and property. Know how to stop the engine quickly in case of emergency. Understand the use of all controls.
l Stop the engine immediately if
anyone falls overboard, and do not run the engine while the boat is near anyone in the water.
l Always stop the engine if you must
leave the controls for any reason.
l Attach the emergency stop switch
lanyard securely to the operator.
Always wear a PFD (Personal Flotation Device) while on the boat.
Familiarize yourself with all laws and regulations relating to boating and the use of outboard motors.
Be sure that anyone who operates the outboard motor receives proper instruction.
Be sure the outboard motor is properly mounted on the boat.
Do not remove the engine cover while the engine is running.
Do not attempt to modify the out­board motor.
Do not remove any labels, covers, or
safety devices; they are installed for your safety.
1. OUTBOARD MOTOR SAFETY
Refuel With Care
l Gasoline is extremely flammable, and
gasoline vapor can explode. Refuel
outdoors, in a well-ventilated area,
with the engine stopped. Never smoke near gasoline, and keep other flames and sparks away.
l Remove any portable fuel tank from
the boat for refueling. Keep the portable fuel tank away from the battery or other potential spark sources.
l Refuel carefully to avoid spilling
fuel. Avoid overfilling the fuel tank.
l After refueling, tighten the filler cap
securely. If any fuel is spilled, make sure the area is dry before starting the engine.
Carbon Monoxide Hazard Exhaust gas contains poisonous carbon
monoxide. Avoid inhalation of exhaust gas. Never run the engine in a closed garage or confined area.

SAFETY LABEL LOCATIONS

These labels are in the locations shown. They warn you of potential hazards that could seriously injure you. Read these labels carefully.
I PUCE lRANSM,SS,ON IN nE”mAl BEFORE STARTING. I 00 NOT OPERATE WITH ENGINE COVER REMOVED. I GE SVRE THE A.NTIVENTIUTION PLATE IS BELOW THE
I 00 NOT SHIFT TO
REVERSE
SUDDENLY AT HIGH
1. OUTBOARD MOTOR SAFETY
FLAMMABLE
CONTAIN LEAD ANTI KNMX aypaJNs
I CHECK OIL LEVEL BEFORE STARTING. I RUSH THE
ARER EACR USE IN SALT WATER.
I ~GM~CY STARTING INSTRUCTIONS ARE ON TOP OF
SYSTEM
THOROUGHLY WITH FRESH WAYER
2. COMPONENT IDENTIFICATION
(TILLER HANDLE TYPE)
FUEL LINE
CLA SCR
I
GEAR OIL DIiAIN PLUG
I
PROPELLER
OIL LEVEL DIPSTICK
ENGINE OIL DRAIN SCREW
, “R
TAL)
STARTER GRIP
THRdTTLE FRICTION KNOB \ --.
ENGINE START (Electric starter type)
WATER INTAKE
OIL PRESSURE INDICATOR LIGHT
---. Irl\ -
9 \
c--
EtiERGENCY
EMERGENCY STOP SWITCH CLIP
I
STOP SWITCH LANYARD
I
SPAdE EMERGENCY STOP SWITCH CLIP
10
2. COMPONENT IDENTIFICATION
(REMOTE CONTROL TYPE)
ENGINE COVER
\
ADJUSTING’ ROD
GEAR OIL LEVEL PLUG’r-fiy& i;i;;ii
jiILZ&. !-NUN, OIL
I
I
GEAR OIL DRAIN PLUG
PROPELLER
\
. \.
I \
\
EXHAUST PORT
I
, DIPSTICK
COOLING SYSTEM
INDICATOR
_..---.-- -
N BOLT
1 TAB DE METAL)
OIL FILLER CAP
CONTROL LEVER
CHOKE KNOB
I
SPARE EMERGENCY STOP SWITCH C
TILT LEVER
RP
A“UPT
\
WATER INTAKE EMERGENCY STOP
SWITCH LANYARD
K j Ill L!trsEAn
/
EMERGENCY STOP SWITCH CLIP
NEUTRAL
EM\ERGENCY ENGINE STOP SWITCH
I
11
2. COMPONENT IDENTIlFICATION
FUEL GAUGE
FUEL T
FUEL
VENT KNOB
/
12
I
PRIMER BULB
FUEL HOSE CONNECTOR (FEMALE)
3. CONTROLS (TILLER HANDLE TYPE)
Engine Start Button (Electric Starter Type)
R
BUTTON
Move the gearshift lever to the N (neutral) position before starting. The engine will not start unless the gearshift lever is in the N (neutral) position.

Gearshift Lever

R (reverse)
\
---/ /----
N
’ ’ LEVER
There are three gearshift lever posi­tions.
F (forward): The boat moves forward. N (neutral): The transmission gears
are disengaged from the engine.
R (reverse): The boat reverses.

Choke Knob

CHbKE KNOB
When the engine is cold, pull the choke knob. A rich fuel mixture is provided to the engine by pulling the choke knob.
13
3. CONTROLS (TILLER HANDLIE TYPE)

Throttle Grip

THRO’ITLE GRIP
Turn the grip clockwise or counter­clockwise to adjust the engine speed. Turning the grip in the direction shown by the arrow increases engine speed.

Throttle Opening Indicator

THROTTLE OPENING INDICATOR
The curve on the grip indicates throttle opening.

Throttle Friction Knob

RELEASE
Use the throttle friction knob to set the
throttle grip at a certain position while cruising. Turning the friction knob clockwise sets the throttle grip, and it is released by turning the friction knob counterclockwise.
14
3. CONTROLS (TILLER HANDLE TYPE)

Engine Stop Switch

PUSH
Push the engine stop switch to stop the engine.

Emergency Stop Switch Lanyard

EMERGENCY STOP SWITCH CLIP
The emergency stop switch lanyard is provided to stop the engine immedi­ately in the event the operator should fall overboard or away from the con­trols.
The emergency stop switch clip must be engaged with the engine stop switch or the engine will not start. When the emergency stop switch clip becomes disengaged
stop switch the engine will stop imme­diately.
from the engine
ENGINE STOP SWITCH
EMERGENCY STOP SWITCH LANYARD
SPARE EMERGENCY STOP SWITCH CLIP
Attach the emergency stop switch lan­yard securely to the operator when operating the outboard motor.
A
spare emergency stop switch clip is
provided near the engine stop switch.
15
3. CONTROLS (TILLER HANDLE TYPE)

Oil Pressure Indicator Light

\ I
OIL PRkSURE INDICATOR LIGHT
The green oil pressure indicator light is
normally ON when the outboard motor is running. When the engine oil level is low or the engine lubrication system is faulty, the green oil pressure indicator light turns OFF.

Recoil Starter

STARTER GRIP
,a ’
(Recoil starter type)
Pull the starter grip to start the engine. Set the gearshift lever in the N (neutral) position before starting. The engine will not start unless the gearshift lever is in the N (neutral) position.
16
3. CONTROLS (REMOTE CONTROL TYPE)

Remote Control Lever

The remote control lever controls gear
selection and throttle opening posi­tions. It is necessary to pull up the neutral release lever to operate the remote control lever.
THROTTLE
REMOTE CONTROL LEVER
F (forward):
Moving the lever to the F position
(approximately 30” from the N
position) will engage the forward
gear. Moving the lever further from
the F position will increase the
throttle opening and the boat for­ward speed.
N (neutral):
The engine idles and the transmis­sion gears are disengaged.
(NEUhAL)
I
OPENING
R (reverse):
Moving the lever to the R position (approximately 30” from the N position) will engage the reverse gear. Moving the lever further from the R position will increase the throttle opening and the boat reverse speed.
.
17
3. CONTROLS (REMOTE CONTROL TYPE)

Neutral Release Lever

The neutral release lever is on the remote control lever to prevent an accidental gear engagement.
The remote control lever will not engage forward or reverse gear unless
the neutral release lever is pulled up.

Ignition Switch

+ ON START
The remote control box is equipped with a key type ignition switch. Key positions:
START
To activate the starter motor and start the engine. (the remote control lever must be in the neutral position)
ON
To run battery
the engine after starting (the
will discharge if the key is left in this position with the engine not running).
OFF
To stop the engine (IGNITION OFF).
To prevent
the battery
from dis-
charging, keep the key in the OFF
position when the engine is not run­ning.
18

Emergency Stop Switch Lanyard

3. CONTROLS (REMOTE CONTROL TYPE)
EMER\GENCY STOP ’
SWITCH CLIP
The emergency stop switch lanyard is provided to stop the engine immedi­ately in the event the operator should fall overboard or away from the con­trols.
The emergency stop switch clip must be engaged with the emergency engine stop switch or the engine will not start. When the emergency stop switch clip
becomes disengaged from the emer­gency engine stop switch the engine will stop immediately.
SWITCH LANYARD
The emergency engine stop switch should not he used to normally stop the engine. Use the ignition switch to normally stop the engine.
Attach the emergency stop switch lan­yard securely to the operator when operating the outboard motor.
SPARE EMERGENCY STOP SWITCH CLIP
A spare emergency stop switch clip is provided on the remote control box.
19
3. CONTROLS (REMOTE CONTROL TYPE)

Choke/Fast Idle Lever

N (neutral)
CHOKE
The choke/fast idle lever provides two functions:
1. Electric choke solenoid activation for easy engine start up.
2. Engine fast idle. The choke/fast idle lever will not
move unless the remote control lever
is in the N (neutral) position.
Conversely, the remote control lever
will not move unless the choke/fast idle lever is in the lowest position.
XIMUM FAST IDLE
LOWEST POSITION
AST IDLE
LEVER
Lift and hold the choke/fast idle lever up fully, this will provide a rich fuel mixture and the correct fast idle.
Gradually lower the choke/fast idle
lever to the lowest position to decrease
the choke and fast idle.

Manual Choke Knob

CHOkE KNOB
A manual choke knob is provided on the right side of the motor which can be used in the event the battery is dis­charged. Pull the manual choke knob, and a rich fuel mixture will be provid­ed to the engine.
20
3. CONTROLS (REMOTE CONTROL TYPE)

Oil Pressure Indicator Light/Buzzer 1

The green oil pressure indicator light turns OFF and the buzzer sounds when the oil level is low and/or the engine lubrication system is faulty.

Overheat Indicator Light/Buzzer

The red overheat indicator light turns ON and the buzzer sounds when the engine cooling system is faulty. The engine speed slows down gradually.
21
3. CONTROLS dk INSTRUMENTS (common)

Tilt Lever

LEVER
Use the tilt lever to temporarily tilt the motor when the boat is operating or mooring in shallow water.
Tilt lever in the TILT position:
The lock mechanism between the
motor and stern bracket is unlocked. The motor can be tilted up to either the 30”, 45” or 75” tilt position.
Tilt lever in the RUN position:
The lock mechanism between the
motor and stern bracket is locked
when the motor is in contact with the
transom angle adjusting rod.

Trim Tab

\
When making a turn, if an unequal amount of effort is required to turn the steering wheel or tiller handle right or left, adjust the trim tab so that an equal amount of effort is required.
Distribute the load evenly in the boat and run the boat in straight course at full throttle. Slightly turn the steering
wheel or tiller handle for both right and left turns to determine if an equal amount of effort is required. If adjust­ment is necessary loosen the tighten­ing bolt and turn the trim tab right or left. Make small adjustments at a time and retest. Incorrect trim tab adjustment can cause adverse steering.
The trim tab also functions as an anode.
22
3. CONTROLS & INSTRUMENTS (common)

Anode Metal

The anode is made from a sacrificial material which helps to protect the outboard motor from corrosion.
-1 Painting or coating the anode will lead to rust and corrosion
damage to the outboard motor.

Cooling System Indicator

COOiING SYSTEM INDICATOR
The cooling system is monitored here to make sure cooling water is circulat­ing through the engine.

Water Intakes

Waier Intakes
The engine cooling water is drawn into the water pump through these water intakes.
23
3. CONTROLS & INSTRUMENTS (common)
Transom Angle Adjusting Rod

TRANSOM ANGLE ADJUSTING ROD

The transom angle adjusting rod is used to adjust the motor angle to achieve the correct boat trim. There are 5 adjustment holes located in the stem bracket. Push in and turn the transom angle adjusting rod up to remove. To install
insert into the proper hole and turn
down to lock. After installation pull
the transom angle adjusting rod out­ward to be sure it is locked in place. Start with the transom angle adjusting
rod in the hole closest to the boat tran-
TO CHANGE ADJUSTING ROD
TO LOCK LOCKED POSITION
TRANSOM ANGLE
I
-;
UNLOCKED POSITION
I
---
.
--A’
J
som, lower the motor and operate the boat at full speed. If the bow is exces­sively low stop the boat and motor. Tilt the motor up and raise the transom angle adjusting rod one more hole away from the transom and retest. The optimum boat trim is when the boat is parallel with the water. The transom angle adjusting rod stops the motors forward movement. The motor should never be operated with the transom angle adjusting rod removed.
24
3. CONTROLS & INSTRUMENTS (common)

Fuel Cap/Gauge/Vent Knob

VENT KNOB
GAUGii
FUEL FiLLEli CAP
The fuel gauge is part of the fuel cap. The fuel cap vent knob controls air
entering and leaving the fuel tank. When refilling the fuel tank, turn the vent knob counterclockwise to the open position and remove the fuel cap.
Before transporting, storing or refill­ing the fuel tank inspect the condition of the fuel cap gasket and replace if
necessary.
Before transporting or storing the fuel tank turn the vent knob fully clock­wise to the closed position.
I -
m Gasoline is
extremely flammable, and gaso-
line vapor can explode, causing serious injury or death. Do not smoke or allow flames or sparks
in your working area. KEEP
OUT OF REACH OF CHILDREN.
Over-Rev Limiter This outboard motor is equipped with
an engine over-rev limiter which limits the maximum engine rpm. This over­rev limiter protects the engine from mechanical damage.
The over-rev limiter may be activated by putting the propeller in a light load condition or propeller ventilation. When the over-rev limiter is activated the engine rpm will become unstable or erratic. Should this occur reduce the throttle opening and wait for the engine rpm to stabilize then increase the throttle opening.
25
4. INSTALLATION

Installation

It is your responsibility to choose a boat suitable for the motor.
DO NOT OVERPOWER THE BOAT
Do not install an outboard motor that exceeds the recommended maximum horsepower for the boat. Refer to the boat certification plate for the maxi-
mum recommended horsepower for the boat. For most boat applications, the motor should have a horsepower which provides 80% of the maximum recom­mended horsepower for the boat. If the certification plate information is not available, contact the boat dealer.
The BF25A/30A must be installed on transoms which have the following minimum or maximum thickness.
STERN CENTER LINE

Installation position

Install on the stern center line.

Installation height

For proper propeller depth and engine cooling, the boat and outboard motor transom height must match.
Three outboard motor transom heights are available. Match your boats tran­som height to the outboard motor transom height shown below.
Outboard Motor
@ MOTOR TRANSOM HEIGHT @ BOAT TRANSOM HEIGHT 0 O-2inW50mm) @ ANTICAVITATION PLATE
The anticavitation plate should be O-2 inches below the bottom of the boat. With the boat in the water, loaded and motor off, the anticavitation plate should be about 4 inches below the surface of the water.
-1 Running the outboard motor without suficient cooling water will damage the water pump and overheat the engine.
26

Motor attachment

4. INSTALLATION
SCREW
SAFETY kOiE
Attach the stem bracket to the transom and tighten the clamp screws.
l Before operating the boat, check the
tightness of the clamp screws.
l Tie a rope through the hole in the
stern bracket and secure the other end of the rope to the boat. This will
prevent accidental loss of the motor.
l The holes in the clamp screw handles
may be padlocked together to prevent theft of the motor.
BOLiS
TRANSOM BOAkD
I I
%JT
To prevent the outboard motor from falling accidentally, you may further secure the stem bracket to the transom board with the optional Mounting Bolt/ Nut Kit. Good quality stainless steel commercially available bolts, nuts and
washers may also be used.
Before installing the bolts, be sure to
apply sealant to the bolt holes. This modification should be made by your authorized Honda Marine dealer. For battery handling and installation
information refer to pages 83.
27
4. INSTALLATION
Engine Cover Removal/Installation
UNLAT
To remove, release the engine cover latch and remove the engine cover.
To install, position the engine cover over the engine and hook and lock the latch.
28
FRONT SIDE
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