This manual covers service and repair procedures for
Honda BF40D•BF50D outboard motors.
All information contained in this manual is based on the
latest product information available at the time of
printing. We reserve the right to make changes at anytime
without notice.
No part of this publication may be reproduced, stored in
a retrieval system, or transmitted, in any form, by any
means, electronic, mechanical, photocopying, recording,
or otherwise, without prior written permission of the
publisher. This includes text, figures, and tables.
As you read this manual, you will find information that is
preceded by a
symbol. The purpose of this
message is to help prevent damage to the outboard
motor, other property, or the environment.
SAFETY MESSAGES
Your safety and the safety of others are very important.
To help you make informed decisions, we have provided
safety messages and other safety information throughout
this manual. Of course, it is not practical or possible to
warn you about all the hazards associated with servicing
these outboard motors. You must use your own good
judgment.
You will find important safety information in a variety of
forms, including:
• S
Sa
affe
etty
y lla
ab
be
ells
s –– on the engine cover.
• S
Sa
affe
etty
y m
me
es
ss
sa
ag
ge
es
s –– Preceded by a safety alert symbol
and one of three signal words, DANGER, WARNING,
or CAUTION.
These signal words 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.
You CAN be HURT if you don't
follow instructions.
• IIn
ns
sttrru
uc
cttiio
on
ns
s –– how to service this outboard motor
correctly and safely.
H
Ho
on
nd
da
a M
Mo
otto
orr C
Co
o..,, L
Lttd
d..
S
Se
errv
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e P
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ub
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e
NOTICE
SPECIFICATIONS
1
SERVICE INFORMATION
2
MAINTENANCE
3
COVER
4
PROGRAMMED-FUEL INJECTION
5
ENGINE REMOVAL/INSTALLATION
6
ALTERNATOR/PULSER ROTOR/TIMING BELT
7
WATER JACKET COVER/THERMOSTAT
8
CYLINDER HEAD/VALVES/OIL PUMP
9
CRANKCASE/CYLINDER BLOCK/
CRANKSHAFT/PISTONS
10
PROPELLER/GEAR CASE/EXTENSION CASE/
OIL CASE
11
SHIFT ROD/ENGINE UNDER CASE
12
MOUNT CASE/STERN BRACKET/
SWIVEL CASE
13
POWER TRIM/TILT ASSEMBLY/GAS ASSISTED
DAMPER ASSEMBLY
14
STEERING ROD/REMOTE CONTROL BOX
[REMOTE CONTROL TYPE]
15
TILLER HANDLE [TILLER HANDLE TYPE]
16
CABLES/THROTTLE ARM BRACKET
17
ELECTRICAL EQUIPMENT
18
WIRING DIAGRAMS/SYSTEM DIAGRAM
19
DANGER
WARNING
CAUTION
INTRODUCTION
CONTENTS
Sections in pale print are included in VOLUME 1.
*: Refer to the page 2-1 and 2-2 of VOLUME 1 carefully
before servicing.
Date of lssue: March, 2008
© Honda Motor Co., Ltd.
1