Yamaha F100B User manual

OWNER’S MANUAL
F100B
67F-28199-7B-E0

EMU25051
Read this owner’s manual carefully before operating or working on your
outboard motor. Keep this manual onboard in a waterproof bag when
boating. This manual should stay with the outboard motor if it is sold.

Important manual information
EMU25103
To the owner
Thank you for choosing a Yamaha outboard
motor. This Owner’s Manual contains infor-
mation needed for proper operation, mainte-
nance and care. A thorough understanding
of these simple instructions will help you ob-
tain maximum enjoyment from your new
Yamaha. If you have any question about the
operation or maintenance of your outboard
motor, please consult a Yamaha dealer.
In this Owner’s Manual particularly important
information is distinguished in the following
ways.
The Safety Alert Symbol means
ATTENTION! BECOME ALERT! YOUR
SAFETY IS INVOLVED!
WARNING
EWM00780
Failure to follow WARNING instructions
could result in severe injury or death to
the machine operator, a bystander, or a
person inspecting or repairing the out-
board motor.
CAUTION:
ECM00700
A CAUTION indicates special precautions
that must be taken to avoid damage to the
outboard motor.
NOTE:
A NOTE provides key information to make
procedures easier or clearer.
Yamaha continually seeks advancements in
product design and quality. Therefore, while
this manual contains the most current prod-
uct information available at the time of print-
ing, there may be minor discrepancies
between your machine and this manual. If
there is any question concerning this manu-
al, please consult your Yamaha dealer.
To ensure long product life, Yamaha recom-
mends that you use the product and perform
the specified periodic inspections and main-
tenance by correctly following the instruc-
tions in the owner’s manual. Any damage
resulting from neglect of these instructions is
not covered by warranty.
Some countries have laws or regulations re-
stricting users from taking the product out of
the country where it was purchased, and it
may be impossible to register the product in
the destination country. Additionally, the
warranty may not apply in certain regions.
When planning to take the product to another
country, consult the dealer where the prod-
uct was purchased for further information.
If the product was purchased used, please
consult your closest dealer for customer re-
registration, and to be eligible for the speci-
fied services.
NOTE:
The F100BET and the standard accessories
are used as a base for the explanations and
illustrations in this manual. Therefore some
items may not apply to every model.
EMU25121
F100B
OWNER’S MANUAL
©2007 by Yamaha Motor Co., Ltd.
1st Edition, April 2007
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Co., Ltd.
is expressly prohibited.
Printed in Japan

Table of contents
General information .......................... 1
Identification numbers record.......... 1
Outboard motor serial number .......... 1
Key number....................................... 1
EC label........................................... 1
Read manuals and labels................ 3
Warning labels .................................. 3
Safety information............................. 6
Safety information ........................... 6
Rotating parts.................................... 6
Hot parts ........................................... 6
Electric shock.................................... 6
Power trim and tilt ............................. 6
Engine shut-off cord.......................... 6
Gasoline............................................ 6
Gasoline exposure and spills ............ 6
Carbon monoxide.............................. 7
Modifications ..................................... 7
Boating safety ................................. 7
Alcohol and drugs ............................. 7
Personal flotation devices ................. 7
People in the water ........................... 7
Passengers ....................................... 7
Overloading....................................... 7
Avoid collisions ................................. 7
Weather ............................................ 8
Passenger training ............................ 8
Boating safety publications ............... 8
Laws and regulations ........................ 8
Basic requirements ........................... 9
Fueling instructions ......................... 9
Gasoline............................................ 9
Engine oil .......................................... 9
Installation requirements ............... 10
Boat horsepower rating................... 10
Mounting motor ............................... 10
Remote control requirements.......... 10
Battery requirement ........................ 10
Propeller selection .......................... 11
Start-in-gear protection ................. 12
Basic components .......................... 13
Main components.......................... 13
Remote control................................ 13
Remote control lever....................... 14
Neutral interlock trigger ................... 14
Neutral throttle lever........................ 14
Tiller handle..................................... 15
Gear shift lever................................ 15
Throttle grip ..................................... 15
Throttle indicator ............................. 15
Throttle friction adjuster...................16
Engine shut-off switch ..................... 16
Engine stop button .......................... 17
Main switch ..................................... 17
Steering friction adjuster .................17
Power trim and tilt switch on remote
control or tiller handle....................18
Power trim and tilt switch on bottom
engine cowling .............................. 18
Trim tab with anode.........................19
Tilt support lever for power trim and
tilt model........................................ 19
Top cowling lock lever (pull up
type) .............................................. 20
Flushing device ............................... 20
Warning indicator ............................ 20
Digital tachometer ........................... 21
Low oil pressure-warning
indicator ........................................ 21
Overheat-warning indicator (digital
type) .............................................. 21
Speedometer (digital type) .............. 22
Trim meter (digital type) .................. 22
Hour meter ...................................... 23
Hour meter (digital type)..................23
Trip meter ........................................ 23
Clock ............................................... 24
Fuel gauge ...................................... 24
Fuel warning indicator ..................... 24
Low battery voltage-warning
indicator ........................................ 25
Warning system ............................ 25
Overheat warning ............................ 25
Low oil pressure warning ................26
Operation ......................................... 27
Installation..................................... 27
Mounting the outboard motor .......... 27
Breaking in engine ........................ 28
Procedure for 4-stroke models........ 28

Table of contents
Pre-operation checks .................... 29
Fuel ................................................. 29
Controls........................................... 29
Stop switches.................................. 29
Engine............................................. 29
Checking the engine oil level .......... 29
Filling fuel ...................................... 30
Operating engine........................... 30
Feeding fuel .................................... 30
Starting engine................................ 30
Warming up engine ....................... 33
Manual start and electric start
models .......................................... 33
Shifting .......................................... 34
Stopping boat ................................ 35
Stopping engine ............................ 35
Procedure ....................................... 35
Trimming outboard motor.............. 36
Adjusting trim angle (Power trim
and tilt) .......................................... 36
Adjusting boat trim .......................... 37
Tilting up and down ....................... 38
Procedure for tilting up (power trim
and tilt models) ............................. 39
Procedure for tilting down (power
trim and tilt models) ...................... 40
Cruising in shallow water .............. 41
Power trim and tilt models............... 41
Cruising in other conditions........... 42
Maintenance..................................... 43
Specifications ................................ 43
Transporting and storing outboard
motor ........................................... 44
Storing outboard motor ................... 44
Procedure ....................................... 45
Lubrication ...................................... 46
Battery care..................................... 46
Flushing power unit......................... 47
Cleaning the outboard motor .......... 48
Checking painted surface of
motor............................................. 48
Periodic maintenance.................... 48
Replacement parts.......................... 48
Severe operating conditions ........... 48
Maintenance chart 1 ....................... 50
Maintenance chart 2........................52
Greasing.......................................... 53
Cleaning and adjusting spark
plug ............................................... 53
Checking fuel system ...................... 54
Inspecting fuel filter ......................... 55
Cleaning fuel filter ...........................55
Inspecting idling speed....................56
Changing engine oil ........................56
Checking wiring and connectors ..... 58
Exhaust leakage.............................. 58
Water leakage ................................. 58
Engine oil leakage........................... 58
Checking power trim and tilt
system........................................... 58
Checking propeller .......................... 59
Removing propeller ......................... 60
Installing propeller ........................... 61
Changing gear oil ............................ 61
Inspecting and replacing
anode(s)........................................ 62
Checking battery (for electric start
models) ......................................... 63
Connecting the battery .................... 63
Disconnecting the battery................64
Checking top cowling ...................... 64
Coating the boat bottom.................. 64
Trouble Recovery............................ 66
Troubleshooting ............................ 66
Temporary action in emergency ... 69
Impact damage ............................... 69
Replacing fuse ................................ 69
Power trim and tilt will not
operate.......................................... 70
Starter will not operate .................... 70
Emergency starting engine .............71
Engine fails to operate .................. 72
Ignition system malfunction............. 72
Treatment of submerged motor .... 73
Procedure........................................ 73

1
General information
EMU25171
Identification numbers record
EMU25183
Outboard motor serial number
The outboard motor serial number is
stamped on the label attached to the port
side of the clamp bracket.
Record your outboard motor serial number in
the spaces provided to assist you in ordering
spare parts from your Yamaha dealer or for
reference in case your outboard motor is sto-
len.
EMU25190
Key number
If a main key switch is equipped with the mo-
tor, the key identification number is stamped
on your key as shown in the illustration.
Record this number in the space provided for
reference in case you need a new key.
EMU25202
EC label
Engines affixed with this label conform to
certain portions of the European Parliament
directive relating to machinery. Refer to the
label and the EC Declaration of Conformity
for more details.
1. Outboard motor serial number location
1. Key number
1. EC label location
1ZMU04215

General information
2
ZMU01696

General information
3
EMU33520
Read manuals and labels
Before operating or working on this motor:
●
Read this manual.
●
Read any manuals supplied with the boat.
●
Read all labels on the outboard motor and the boat.
If you need any additional information, contact your Yamaha dealer.
EMU33831
Warning labels
If these labels are damaged or missing, contact your Yamaha dealer for replacements.
2
1
ZMU05744
3

General information
4
EMU33911
Contents of labels
The above warning labels mean as follows.
1
WARNING
EWM01690
Emergency starting does not have start-
in-gear protection. Ensure shift control is
in neutral before starting engine.
2
WARNING
EWM01680
●
Keep hands, hair, and clothing away
from rotating parts while the engine is
running.
●
Do not touch or remove electrical parts
when starting or during operation.
3
WARNING
EWM01670
●
Read Owner’s Manuals and labels.
●
Wear an approved personal flotation
device (PFD).
●
Attach engine shut-off cord (lanyard) to
your PFD, arm, or leg so the engine
stops if you accidentally leave the
helm, which could prevent a runaway
boat.
EMU33841
Symbols
The following symbols mean as follows.
Caution/Warning
ZMU05746
12
3

General information
5
Read Operator’s Manual
Hazard caused by continuous rotation
Electrical hazard
Remote control lever/gear shift lever operat-
ing direction, dual direction
Engine start/ Engine cranking
ZMU05696
ZMU05664
ZMU05665
ZMU05666
ZMU05667
ZMU05668
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