Yamaha F75B User manual

Read this manual carefully before operating this
outboard motor.
OWNER’S MANUAL
F75B
F80B
F90B
F100D
6D6-28199-25-E0
U6D625E0.book Page 1 Thursday, March 13, 2008 9:06 AM

Read this manual carefully before operating this outboard motor. Keep this
manual onboard in a waterproof bag when boating. This manual should stay
with the outboard motor if it is sold.
U6D625E0.book Page 1 Thursday, March 13, 2008 9:06 AM

Important manual information
EMU25105
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 obtain
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.
: This is the safety alert symbol. It is used
to alert you to potential personal injury haz-
ards. Obey all safety messages that follow
this symbol to avoid possible injury or death.
WARNING
EWM00781
A WARNING indicates a hazardous situa-
tion which, if not avoided, could result in
death or serious injury.
NOTICE
ECM00701
A NOTICE indicates special precautions
that must be taken to avoid damage to the
outboard motor or other property.
T
IP:
A TIP provides key information to make pro-
cedures easier or clearer.
Yamaha continually seeks advancements in
product design and quality. Therefore, while
this manual contains the most current product
information available at the time of printing,
there may be minor discrepancies between
your machine and this manual. If there is any
question concerning this manual, please con-
sult your Yamaha dealer.
To ensure long product life, Yamaha recom-
mends that you use the product and perform
the specified periodic inspections and mainte-
nance by correctly following the instructions in
the owner’s manual. Any damage resulting
from neglect of these instructions is not cov-
ered 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 war-
ranty may not apply in certain regions. When
planning to take the product to another coun-
try, consult the dealer where the product 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 specified
services.
T
IP:
The F75BET, F80BET, F90BET, F100DET
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
F75B, F80B, F90B, F100D
OWNER’S MANUAL
©2008 by Yamaha Motor Co., Ltd.
1st Edition, February 2008
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Co., Ltd.
is expressly prohibited.
Printed in Japan
U6D625E0.book Page 1 Thursday, March 13, 2008 9:06 AM

Table of contents
Safety information............................. 1
Outboard motor safety .................... 1
Propeller ............................................. 1
Rotating parts ..................................... 1
Hot parts............................................. 1
Electric shock ..................................... 1
Power trim and tilt............................... 1
Engine shut-off cord (lanyard) ............ 1
Gasoline ............................................. 1
Gasoline exposure and spills ............. 1
Carbon monoxide ............................... 2
Modifications ...................................... 2
Boating safety ................................. 2
Alcohol and drugs............................... 2
Personal flotation devices .................. 2
People in the water............................. 2
Passengers ........................................ 2
Overloading ........................................ 2
Avoid collisions................................... 2
Weather.............................................. 3
Passenger training ............................. 3
Boating safety publications................. 3
Laws and regulations ......................... 3
General information .......................... 4
Identification numbers record .......... 4
Outboard motor serial number ........... 4
Key number........................................ 4
EC Declaration of Conformity
(DoC)............................................ 4
CE Marking ..................................... 4
C-Tick label ..................................... 5
Read manuals and labels................ 6
Warning labels.................................... 6
Specifications and requirements..... 9
Specifications .................................. 9
Installation requirements ............... 10
Boat horsepower rating .................... 10
Mounting motor ................................ 10
Remote control requirements........ 11
Battery requirements..................... 11
Battery specifications ....................... 11
Mounting battery............................... 11
Propeller selection ........................ 11
Start-in-gear protection ................. 12
Engine oil requirements ................ 12
Fuel requirements ......................... 13
Gasoline ........................................... 13
Muddy or acidic water ................... 13
Anti-fouling paint ........................... 13
Motor disposal requirements......... 14
Emergency equipment .................. 14
Emission control information......... 14
U.S. insular areas............................. 14
Components .................................... 15
Components diagram.................... 15
Fuel tank........................................... 16
Fuel joint........................................... 16
Fuel gauge ....................................... 17
Fuel tank cap.................................... 17
Air vent screw................................... 17
Remote control box .......................... 17
Remote control lever ........................ 17
Neutral interlock trigger .................... 17
Neutral throttle lever ......................... 17
Tiller handle ...................................... 18
Gear shift lever ................................. 18
Throttle grip ...................................... 18
Throttle indicator............................... 18
Throttle friction adjuster .................... 19
Engine shut-off cord (lanyard) and
clip................................................. 19
Engine stop button ........................... 20
Main switch....................................... 20
Steering friction adjuster................... 21
Power trim and tilt switch on remote
control or tiller handle.................... 21
Power trim and tilt switch on bottom
engine cowling .............................. 21
Variable trolling RPM switches......... 22
Trim tab with anode.......................... 22
Tilt support lever for power trim and
tilt model........................................ 23
Top cowling lock lever
(pull up type) ................................. 23
Flushing device ................................ 24
Fuel filter/Water separator................ 24
U6D625E0.book Page 1 Thursday, March 13, 2008 9:06 AM

Table of contents
Alert indicator ................................... 24
Instruments and indicators ............ 25
Indicators....................................... 25
Low oil pressure-alert indicator ........ 25
Overheat-alert indicator.................... 25
Digital tachometer ......................... 25
Tachometer ...................................... 26
Trim meter........................................ 26
Hour meter ....................................... 26
Low oil pressure-alert indicator ........ 26
Overheat-alert indicator.................... 27
Digital speedometer ...................... 27
Speedometer.................................... 27
Fuel gauge ....................................... 27
Trip meter / Clock / Voltmeter........... 28
Fuel level-alert indicator ................... 29
Low battery voltage-alert indicator ... 29
6Y8 Multifunction meters............... 29
6Y8 Multifunction tachometers...... 29
Start-up checks ................................ 30
Low oil pressure-alert....................... 30
Overheat alert................................... 30
Water separator alert........................ 31
Engine trouble alert .......................... 31
Low battery voltage-alert .................. 31
6Y8 Multifunction speedometers... 31
6Y8 Multifunction fuel
management meters .................. 32
Engine control system.................... 33
Alert system .................................. 33
Overheat alert................................... 33
Low oil pressure alert ....................... 33
Installation ....................................... 35
Installation ..................................... 35
Mounting the outboard motor ........... 35
Operation ......................................... 37
First-time operation ....................... 37
Fill engine oil .................................... 37
Breaking in engine............................ 37
Getting to know your boat ................ 37
Checks before starting engine ...... 37
Fuel level .......................................... 38
Remove cowling ............................... 38
Fuel system ...................................... 38
Controls ............................................ 39
Engine shut-off cord (lanyard) .......... 39
Engine oil.......................................... 39
Engine .............................................. 40
Flushing device ................................ 40
Install cowling ................................... 40
Power trim and tilt system ................ 41
Battery .............................................. 41
Filling fuel...................................... 41
Operating engine .......................... 42
Feeding fuel (portable tank) ............. 42
Starting engine ................................. 43
Checks after starting engine ......... 45
Cooling water ................................... 45
Warming up engine....................... 46
Electric start models ......................... 46
Checks after engine warm-up ....... 46
Shifting ............................................. 46
Stop switches ................................... 46
Shifting .......................................... 46
Stopping boat................................ 48
Trolling .......................................... 48
Adjusting trolling speed .................... 48
Stopping engine ............................ 48
Procedure......................................... 48
Trimming outboard motor.............. 49
Adjusting trim angle
(Power trim and tilt)....................... 50
Adjusting boat trim............................ 51
Tilting up and down....................... 51
Procedure for tilting up
(power trim and tilt models)........... 52
Procedure for tilting down
(power trim and tilt models)........... 53
Shallow water................................ 54
Power trim and tilt models ................ 54
Cruising in other conditions........... 55
Maintenance .................................... 56
Transporting and storing outboard
motor.......................................... 56
Storing outboard motor..................... 56
Procedure......................................... 57
U6D625E0.book Page 2 Thursday, March 13, 2008 9:06 AM

Table of contents
Lubrication........................................ 58
Flushing power unit .......................... 58
Cleaning the outboard motor............ 59
Checking painted surface of motor... 59
Periodic maintenance.................... 59
Replacement parts ........................... 60
Severe operating conditions............. 60
Maintenance chart 1......................... 61
Maintenance chart 2......................... 63
Greasing........................................... 64
Cleaning and adjusting spark plug ... 65
Changing engine oil.......................... 65
Checking wiring and connectors ...... 67
Checking propeller ........................... 67
Removing propeller .......................... 68
Installing propeller ............................ 68
Changing gear oil ............................. 69
Cleaning fuel tank............................. 70
Inspecting and replacing anode(s) ... 71
Checking battery
(for electric start models) .............. 71
Connecting the battery ..................... 72
Disconnecting the battery................. 72
Trouble Recovery ............................ 73
Troubleshooting ............................ 73
Temporary action in emergency.... 76
Impact damage................................. 76
Replacing fuse.................................. 76
Power trim and tilt will not operate ... 77
Water separator-alert indicator
blinks while cruising ...................... 77
Starter will not operate ..................... 79
Emergency starting engine............... 80
Treatment of submerged motor..... 81
U6D625E0.book Page 3 Thursday, March 13, 2008 9:06 AM

1
Safety information
EMU33622
Outboard motor safety
Observe these precautions at all times.
EMU36500
Propeller
People can be injured or killed if they come in
contact with the propeller. The propeller can
keep moving even when the motor is in neu-
tral, and sharp edges of the propeller can cut
even when stationary.
●Shut off the engine when a person is in the
water near you.
●Keep people out of reach of the propeller,
even when the engine is off.
EMU33630
Rotating parts
Hands, feet, hair, jewelry, clothing, PFD
straps, etc. can become entangled with inter-
nal rotating parts of the engine, resulting in se-
rious injury or death.
Keep the top cowling in place whenever pos-
sible. Do not remove or replace the cowling
with the engine running.
Only operate the engine with the cowling re-
moved according to the specific instructions in
the manual. Keep hands, feet, hair, jewelry,
clothing, PFD straps, etc. away from any ex-
posed moving parts.
EMU33640
Hot parts
During and after operation, engine parts are
hot enough to cause burns. Avoid touching
any parts under the top cowling until the en-
gine has cooled.
EMU33650
Electric shock
Do not touch any electrical parts while starting
or operating the engine. They can cause
shock or electrocution.
EMU33660
Power trim and tilt
Body parts can be crushed between the mo-
tor and the clamp bracket when the motor is
trimmed or tilted. Keep body parts out of this
area at all times. Be sure no one is in this area
before operating the power trim and tilt mech-
anism.
The power trim and tilt switches operate even
when the main switch is off. Keep people be
away from the switches whenever working
around the motor.
Never get under the lower unit while it is tilted,
even when the tilt support lever is locked. Se-
vere injury could occur if the outboard motor
accidentally falls.
EMU33671
Engine shut-off cord (lanyard)
Attach the engine shut-off cord so that the en-
gine stops if the operator falls overboard or
leaves the helm. This prevents the boat from
running away under power and leaving peo-
ple stranded, or running over people or ob-
jects.
Always attach the engine shut-off cord to a
secure place on your clothing or your arm or
leg while operating. Do not remove it to leave
the helm while the boat is moving. Do not at-
tach the cord to clothing that could tear loose,
or route the cord where it could become en-
tangled, preventing it from functioning.
Do not route the cord where it is likely to be
accidentally pulled out. If the cord is pulled
during operation, the engine will shut off and
you will lose most steering control. The boat
could slow rapidly, throwing people and ob-
jects forward.
EMU33810
Gasoline
Gasoline and its vapors are highly flam-
mable and explosive. Always, refuel accord-
ing to the procedure on page 42 to reduce the
risk of fire and explosion.
EMU33820
Gasoline exposure and spills
Take care not to spill gasoline. If gasoline
spills, wipe it up immediately with dry rags.
Dispose of rags properly.
U6D625E0.book Page 1 Thursday, March 13, 2008 9:06 AM

Safety information
2
If any gasoline spills onto your skin, immedi-
ately wash with soap and water. Change
clothing if gasoline spills on it.
If you swallow gasoline, inhale a lot of gaso-
line vapor, or get gasoline in your eyes, get
immediate medical attention. Never siphon
fuel by mouth.
EMU33900
Carbon monoxide
This product emits exhaust gases which con-
tain carbon monoxide, a colorless, odorless
gas which may cause brain damage or death
when inhaled. Symptoms include nausea,
dizziness, and drowsiness. Keep cockpit and
cabin areas well ventilated. Avoid blocking ex-
haust outlets.
EMU33780
Modifications
Do not attempt to modify this outboard motor.
Modifications to your outboard motor may re-
duce safety and reliability, and render the out-
board unsafe or illegal to use.
EMU33740
Boating safety
This section includes a few of the many im-
portant safety precautions that you should fol-
low when boating.
EMU33710
Alcohol and drugs
Never operate after drinking alcohol or taking
drugs. Intoxication is one of the most common
factors contributing to boating fatalities.
EMU33720
Personal flotation devices
Have an approved personal flotation device
(PFD) on board for every occupant. Yamaha
recommends that you must wear a PFD
whenever boating. At a minimum, children
and non-swimmers should always wear
PFDs, and everyone should wear PFDs when
there are potentially hazardous boating condi-
tions.
EMU33730
People in the water
Always watch carefully for people in the wa-
ter, such as swimmers, skiers, or divers,
whenever the engine is running. When some-
one is in the water near the boat, shift into
neutral and shut off the motor.
Stay away from swimming areas. Swimmers
can be hard to see.
The propeller can keep moving even when
the motor is in neutral. Shut off the engine
when a person is in the water near you.
EMU33750
Passengers
Consult your boat manufacturer’s instructions
for details about appropriate passenger loca-
tions in your boat and be sure all passengers
are positioned properly before accelerating
and when operating above an idle speed.
Standing or sitting in non-designated loca-
tions may result in being thrown either over-
board or within the boat due to waves, wakes,
or sudden changes in speed or direction.
Even when people are positioned properly,
alert your passengers if you must make any
unusual maneuver. Always avoid jumping
waves or wakes.
EMU33760
Overloading
Do not overload the boat. Consult the boat ca-
pacity plate or boat manufacturer for maxi-
mum weight and number of passengers. Be
sure that weight is properly distributed ac-
cording to the boat manufacturers instruc-
tions. Overloading or incorrect weight
distribution can compromise the boats han-
dling and lead to an accident, capsizing or
swamping.
EMU33771
Avoid collisions
Scan constantly for people, objects, and oth-
er boats. Be alert for conditions that limit your
visibility or block your vision of others.
U6D625E0.book Page 2 Thursday, March 13, 2008 9:06 AM

Safety information
3
Operate defensively at safe speeds and
keep a safe distance away from people, ob-
jects, and other boats.
●Do not follow directly behind other boats or
waterskiers.
●Avoid sharp turns or other maneuvers that
make it hard for others to avoid you or un-
derstand where you are going.
●Avoid areas with submerged objects or
shallow water.
●Ride within your limits and avoid aggressive
maneuvers to reduce the risk of loss of con-
trol, ejection, and collision.
●Take early action to avoid collisions. Re-
member, boats do not have brakes, and
stopping the engine or reducing throttle can
reduce the ability to steer. If you are not
sure that you can stop in time before hitting
an obstacle, apply throttle and turn in anoth-
er direction.
EMU33790
Weather
Stay informed about the weather. Check
weather forecasts before boating. Avoid boat-
ing in hazardous weather.
EMU33880
Passenger training
Make sure at least one other passenger is
trained to operate the boat in the event of an
emergency.
EMU33890
Boating safety publications
Be informed about boating safety. Additional
publications and information can be obtained
from many boating organizations.
EMU33600
Laws and regulations
Know the marine laws and regulations where
you will be boating- and obey them. Several
sets of rules prevail according to geographic
location, but all are basically the same as the
International Rules of the Road.
ZMU06025
U6D625E0.book Page 3 Thursday, March 13, 2008 9:06 AM

General information
4
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.
EMU37290
EC Declaration of Conformity
(DoC)
This outboard motor conforms to certain por-
tions of the European Parliament directive re-
lating to machinery.
Each conformed outboard motor accompa-
nied with EC DoC.EC DoC contains the fol-
lowing information;
●Name of Engine Manufacture
●Model name
●Product code of model (Approved model
code)
●Code of conformed directives
EMU25203
CE Marking
Outboard motors affixed with this “CE”mark-
ing conform with the directives of; 98/37/EC,
94/25/EC - 2003/44/EC and 2004/108/EC.
1. Outboard motor serial number location
1
ZMU04214
1. Key number
U6D625E0.book Page 4 Thursday, March 13, 2008 9:06 AM

General information
5
EMU25213
C-Tick label
Engines affixed with this label conform to cer-
tain portion(s) of the Australian Radio Com-
munications Act.
1. CE marking location
1. C-Tick label location
ZMU06040
1
ZMU04218
ZMU01697
U6D625E0.book Page 5 Thursday, March 13, 2008 9:06 AM

General information
6
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.
F75B, F80B, F90B, F100D
U6D625E0.book Page 6 Thursday, March 13, 2008 9:06 AM

General information
7
EMU33912
Contents of labels
The above warning labels mean as follows.
1
WARNING
EWM01691
Emergency starting does not have start-
in-gear protection. Ensure shift control is
in neutral before starting engine.
2
WARNING
EWM01681
●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
EWM01671
●Read Owner’s Manuals and labels.
●Wear an approved personal flotation de-
vice (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.
ZMU05706
12
3
U6D625E0.book Page 7 Thursday, March 13, 2008 9:06 AM

General information
8
EMU33843
Symbols
The following symbols mean as follows.
Notice/Warning
Read Owner’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
U6D625E0.book Page 8 Thursday, March 13, 2008 9:06 AM

Specifications and requirements
9
EMU34520
Specifications
T
IP:
“(AL)”stated in the specification data below
represents the numerical value for the alumi-
num propeller installed.
Likewise, “(SUS)”represents the value for
stainless steel propeller installed and “(PL)”
for plastic propeller installed.
T
IP:
“*”means, select the engine oil referring to the
chart of engine oil paragraph. For further infor-
mation, see page 12.
EMU2821C
Dimension:
Overall length:
F100DET 825 mm (32.5 in)
F75BET 817 mm (32.2 in)
F80BET 825 mm (32.5 in)
F90BET 825 mm (32.5 in)
Overall width:
479 mm (18.9 in)
Overall height L:
1582 mm (62.3 in)
Overall height X:
F100DET 1709 mm (67.3 in)
F75BET 1710 mm (67.3 in)
F80BET 1709 mm (67.3 in)
F90BET 1709 mm (67.3 in)
Transom height L:
536 mm (21.1 in)
Transom height X:
664 mm (26.1 in)
Weight (AL) L:
170.0 kg (375 lb)
Weight (AL) X:
174.0 kg (384 lb)
Weight (SUS) L:
172.0 kg (379 lb)
Weight (SUS) X:
176.0 kg (388 lb)
Performance:
Full throttle operating range:
5000–6000 r/min
Maximum output:
F100DET 73.6 kW@5500 r/min (100
HP@5500 r/min)
F75BET 55.2 kW@5500 r/min (75
HP@5500 r/min)
F80BET 58.8 kW@5500 r/min (80
HP@5500 r/min)
F90BET 66.2 kW@5500 r/min (90
HP@5500 r/min)
Idling speed (in neutral):
700 ±50 r/min
Engine:
Type:
4-stroke L
Displacement:
1596.0 cm³
Bore ×stroke:
79.0 ×81.4 mm (3.11 ×3.20 in)
Ignition system:
TCI
Spark plug (NGK):
LFR5A-11
Spark plug gap:
1.0–1.1 mm (0.039–0.043 in)
Control system:
Remote control
Starting system:
Electric
Starting carburetion system:
Electronic fuel injection
Valve clearance (cold engine) IN:
0.17–0.23 mm (0.0067–0.0091 in)
Valve clearance (cold engine) EX:
0.31–0.37 mm (0.0122–0.0146 in)
Min. cold cranking amps (CCA/EN):
430.0 A
Min. rated capacity (20HR/IEC):
70.0 Ah
U6D625E0.book Page 9 Thursday, March 13, 2008 9:06 AM

Specifications and requirements
10
Maximum generator output:
25.0 A
Drive unit:
Gear positions:
Forward-neutral-reverse
Gear ratio:
2.31 (30/13)
Trim and tilt system:
Power trim and tilt
Propeller mark:
K
Fuel and oil:
Recommended fuel:
Regular unleaded gasoline
Min. research octane:
90
Fuel tank capacity:
24.0 L (6.34 US gal, 5.28 Imp.gal)
Recommended engine oil:
4-stroke outboard motor oil
Recommended engine oil group 1*:
SAE 10W-30/10W-40/5W-30
API SE/SF/SG/SH/SJ/SL
Recommended engine oil group 2*:
SAE 15W-40/20W-40/20W-50
API SH/SJ/SL
Lubrication:
Wet sump
Engine oil quantity without replacement of
oil filter (Oil pan capacity):
4.3 L (4.55 US qt, 3.78 Imp.qt)
Engine oil quantity with replacement of oil
filter (Oil pan capacity):
4.5 L (4.76 US qt, 3.96 Imp.qt)
Amount of adding engine oil (at Periodic
maintenance) Excluding oil filter:
3.5 L (3.70 US qt, 3.08 Imp.qt)
Amount of adding engine oil (at Periodic
maintenance) Including oil filter:
3.7 L (3.91 US qt, 3.26 Imp.qt)
Recommended gear oil:
Hypoid gear oil SAE#90
Gear oil quantity:
0.670 L (0.708 US qt, 0.590 Imp.qt)
Tightening torque for engine:
Spark plug:
25.0 Nm (2.55 kgf-m, 18.4 ft-lb)
Propeller nut:
35.0 Nm (3.57 kgf-m, 25.8 ft-lb)
Engine oil drain bolt:
28.0 Nm (2.86 kgf-m, 20.7 ft-lb)
Engine oil filter:
18.0 Nm (1.84 kgf-m, 13.3 ft-lb)
Noise and vibration level:
Operator sound pressure level (ICOMIA
39/94 and 40/94):
F100DET 73.2 dB(A)
F80BET 73.2 dB(A)
EMU33553
Installation requirements
EMU33563
Boat horsepower rating
WARNING
EWM01560
Overpowering a boat can cause severe in-
stability.
Before installing the outboard motor(s), con-
firm that the total horsepower of your motor(s)
does not exceed the boats maximum horse-
power rating. See the boat’s capacity plate or
contact the manufacturer.
EMU33571
Mounting motor
WARNING
EWM01570
●Improper mounting of the outboard mo-
tor could result in hazardous conditions
such as poor handling, loss of control,
or fire hazards.
●Because the motor is very heavy, spe-
cial equipment and training is required
to mount it safely.
U6D625E0.book Page 10 Thursday, March 13, 2008 9:06 AM

Specifications and requirements
11
Your dealer or other person experienced in
proper rigging should mount the motor using
correct equipment and complete rigging in-
structions. For further information, see page
35.
EMU33581
Remote control requirements
WARNING
EWM01580
●If the engine starts in gear, the boat can
move suddenly and unexpectedly, pos-
sibly causing a collision or throwing
passengers overboard.
●If the engine ever starts in gear, the
start-in-gear protection device is not
working correctly and you should dis-
continue using the outboard. Contact
your Yamaha dealer.
The remote control unit must be equipped
with a start-in-gear protection device(s). This
device prevents the engine from starting un-
less it is in neutral.
EMU25694
Battery requirements
EMU25721
Battery specifications
The engine cannot be started if battery volt-
age is too low.
EMU36290
Mounting battery
Mount the battery holder securely in a dry,
well-ventilated, vibration-free location in the
boat. WARNING! Do not put flammable
items, or loose heavy or metal objects in
the same compartment as the battery.
Fire, explosion or sparks could result.
[EWM01820]
EMU34191
Propeller selection
Next to selecting an outboard, choosing the
right propeller is one of the most important
purchasing decisions a boater can make. The
type, size, and design of your propeller have
a direct impact on acceleration, top speed,
fuel economy, and even engine life. Yamaha
designs and manufactures propellers for ev-
ery Yamaha outboard motor and every appli-
cation.
Your outboard motor came with a Yamaha
propeller chosen to perform well over a range
of applications, but there may be uses where
a different propeller would be more appropri-
ate.
Your Yamaha dealer can help you select the
right propeller for your boating needs. Select
a propeller that will allow the engine to reach
the middle or upper half of the operating
range at full throttle with the maximum boat-
load. Generally, chose a larger pitch propeller
for a smaller operating load and a smaller
pitch propeller for a heavier load. If you carry
loads that vary widely, chose the propeller
that lets the engine run in the proper range for
your maximum load but remember that you
may need to reduce your throttle setting to
stay within the recommended engine speed
range when carrying lighter loads.
For instructions on propeller removal and in-
stallation, see page 67.
Minimum cold cranking amps (CCA/EN):
430.0 A
Minimum rated capacity (20HR/IEC):
70.0 Ah
U6D625E0.book Page 11 Thursday, March 13, 2008 9:06 AM

Specifications and requirements
12
EMU25760
Start-in-gear protection
Yamaha outboard motors affixed with the pic-
tured label or Yamaha-approved remote con-
trol units are equipped with start-in-gear
protection device(s). This feature permits the
engine to be started only when it is in neutral.
Always select neutral before starting the en-
gine.
EMU37471
Engine oil requirements
If the recommended engine oil grades are not
available, select an alternative from the fol-
lowing chart according to the average temper-
atures in your area.
1. Propeller diameter in inches
2. Propeller pitch in inches
3. Type of propeller (propeller mark)
1. Propeller diameter in inches
2. Propeller pitch in inches
3. Type of propeller (propeller mark)
ZMU04606
-
x
123
ZMU04607
-
x
123
1. Start-in-gear protection label
Recommended engine oil:
4-stroke motor oil with a combination of
the following SAE and API oil classifi-
cations
Engine oil type SAE:
10W-30 or 10W-40
Engine oil grade API:
SE, SF, SG, SH, SJ, SL
Engine oil quantity without replacement
of oil filter (Oil pan capacity):
4.3 L (4.55 US qt, 3.78 Imp.qt)
Engine oil quantity with replacement of oil
filter (Oil pan capacity):
4.5 L (4.76 US qt, 3.96 Imp.qt)
Amount of adding engine oil (at Periodic
maintenance) Excluding oil filter:
3.5 L (3.70 US qt, 3.08 Imp.qt)
Amount of adding engine oil (at Periodic
maintenance) Including oil filter:
3.7 L (3.91 US qt, 3.26 Imp.qt)
ZMU01713
1
U6D625E0.book Page 12 Thursday, March 13, 2008 9:06 AM

Specifications and requirements
13
EMU36360
Fuel requirements
EMU36810
Gasoline
Use a good quality gasoline that meets the
minimum octane rating. If knocking or pinging
occurs, use a different brand of gasoline or
premium unleaded fuel. Yamaha recomends
that you use alcohol-free (see Gasohol) gas-
oline whenever possible.
NOTICE
ECM01980
●Do not use leaded gasoline. Leaded gas-
oline can seriously damage the engine.
●Avoid getting water and contaminants in
the fuel tank. Contaminated fuel can
cause poor performance or engine dam-
age. Use only fresh gasoline that has
been stored in clean containers.
Gasohol
There are two types of gasohol: gasohol con-
taining ethanol (E10) and that containing
methanol. Ethanol can be used if the ethanol
content does not exceed 10% and the fuel
meets the minimum octane ratings. All etha-
nol blends containing more than 10% ethanol
can cause fuel system damage or cause en-
gine starting and running problems. Yamaha
does not recommend gasohol containing
methanol because it can cause fuel system
damage or engine performance problems.
EMU36880
Muddy or acidic water
Yamaha strongly recommends that you have
your dealer install the optional chromium-plat-
ed water pump kit if you use the outboard mo-
tor in muddy or acidic water conditions.
However, depending on the model it might not
be required.
EMU36330
Anti-fouling paint
A clean hull improves boat performance. The
boat bottom should be kept as clean of marine
growth as possible. If necessary, the boat bot-
tom can be coated with an anti-fouling paint
approved for your area to inhibit marine
growth.
Do not use anti-fouling paint which includes
copper or graphite. These paints can cause
more rapid engine corrosion.
Recommended gasoline:
Regular unleaded gasoline with a mini-
mum octane rating of 90 (Research
Octane Number).
U6D625E0.book Page 13 Thursday, March 13, 2008 9:06 AM

Specifications and requirements
14
EMU36341
Motor disposal requirements
Never illegally discard (dump) the motor.
Yamaha recommends consulting the dealer
about discarding the motor.
EMU36351
Emergency equipment
Keep the following items onboard in case
there is trouble with the motor.
●A tool kit with assorted screwdrivers, pliers,
wrenches (including metric sizes), and
electrical tape.
●Waterproof flashlight with extra batteries.
●An extra engine shut-off cord (lanyard) with
clip.
●Spare parts, such as an extra set of spark
plugs.
Consult your Yamaha dealer for details.
EMU25221
Emission control information
EMU25310
U.S. insular areas
Engines affixed with the label pictured below
conform to U.S. Environmental Protection
Agency (EPA) regulations for marine SI en-
gines. See the label affixed to your engine for
details.
EMU31570
Approval label of emission control certifi-
cate
This label is attached to the bottom cowling.
New Technology; (4-stroke) MFI
EMU25332
Manufactured date label
This label is attached to the clamp bracket or
the swivel bracket.
1. Approval label location
1. Manufactured date label location
1
ZMU04218
Manufactured:
ZMU04346
U6D625E0.book Page 14 Thursday, March 13, 2008 9:06 AM