Yamaha F80B User manual

Read this manual carefully before operating this
outboard motor.
OWNER’S MANUAL
F80B
F80C
F100D
6D7-28199-79-E0
U6D779E0.book Page 1 Tuesday, November 15, 2011 2:33 PM

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.
U6D779E0.book Page 1 Tuesday, November 15, 2011 2:33 PM

Important manual information
EMU25107
To the owner
Thank you for selecting 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.
TIP:
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.
TIP:
The F80BET, F80CED, F100DET and the
standard accessories are used as a base for
the explanations and illustrations in this man-
ual. Therefore some items may not apply to
every model.
EMU25121
F80B, F80C, F100D
OWNER’S MANUAL
©2011 by Yamaha Motor Co., Ltd.
1st Edition, November 2011
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Co., Ltd.
is expressly prohibited.
Printed in Japan
U6D779E0.book Page 1 Tuesday, November 15, 2011 2:33 PM

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 ..................................... 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
Yamaha Security System ................. 11
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 ................... 14
Anti-fouling paint ........................... 14
Motor disposal requirements......... 14
Emergency equipment .................. 14
Components .................................... 15
Components diagram.................... 15
Fuel tank........................................... 17
Fuel joint........................................... 17
Fuel gauge ....................................... 18
Fuel tank cap.................................... 18
Air vent screw................................... 18
Remote control transmitter ............... 18
Receiver ........................................... 19
Yamaha Security System lock and
unlock mode.................................. 19
Remote control box .......................... 19
Remote control lever ........................ 19
Neutral interlock trigger .................... 20
Neutral throttle lever ......................... 20
Tiller handle ...................................... 20
Gear shift lever ................................. 20
Throttle grip ...................................... 21
Throttle indicator............................... 21
Throttle friction adjuster .................... 21
Engine shut-off cord (lanyard) and
clip................................................. 22
Engine stop button ........................... 22
Main switch....................................... 23
Steering friction adjuster................... 23
Power trim and tilt switch on remote
control or tiller handle.................... 23
Power trim and tilt switch on bottom
cowling .......................................... 24
Variable trolling RPM switches......... 24
Trim tab with anode.......................... 25
Trim angle adjusting bolts ................ 25
Tilt lock mechanism .......................... 26
Tilt support lever for power trim and
tilt or hydro tilt model..................... 26
U6D779E0.book Page 1 Tuesday, November 15, 2011 2:33 PM

Table of contents
Cowling lock lever (pull up type)....... 26
Flushing device ................................ 27
Fuel filter/Water separator................ 27
Alert indicator ................................... 27
Instruments and indicators ............ 28
Indicators....................................... 28
Low oil pressure-alert indicator ........ 28
Overheat-alert indicator.................... 28
Digital tachometer ......................... 28
Tachometer ...................................... 29
Trim meter........................................ 29
Hour meter ....................................... 29
Low oil pressure-alert indicator ........ 29
Overheat-alert indicator.................... 30
Digital speedometer ...................... 30
Speedometer.................................... 30
Fuel gauge ....................................... 30
Trip meter / Clock / Voltmeter........... 31
Fuel level-alert indicator ................... 32
Low battery voltage-alert indicator ... 32
Hour meter .................................... 32
6Y8 Multifunction meters............... 32
6Y8 Multifunction tachometers...... 32
Start-up checks ................................ 33
Yamaha Security System
information .................................... 34
Low oil pressure-alert....................... 34
Overheat alert................................... 35
Water separator alert........................ 35
Engine trouble alert .......................... 36
Low battery voltage-alert .................. 36
6Y8 Multifunction speed &
fuel meters ................................. 36
6Y8 Multifunction speedometers... 37
6Y8 Multifunction fuel
management meters .................. 38
Engine control system.................... 39
Alert system .................................. 39
Overheat alert................................... 39
Low oil pressure alert ....................... 39
Installation ....................................... 41
Installation ..................................... 41
Mounting the outboard motor ........... 41
Operation ......................................... 43
First-time operation ....................... 43
Fill engine oil .................................... 43
Breaking in engine............................ 43
Getting to know your boat ................ 43
Checks before starting engine ...... 43
Fuel level .......................................... 43
Remove cowling ............................... 44
Fuel system ...................................... 44
Controls ............................................ 44
Engine shut-off cord (lanyard) .......... 45
Engine oil.......................................... 45
Engine .............................................. 46
Flushing device ................................ 46
Install cowling ................................... 46
Power trim and tilt system ................ 47
Battery .............................................. 47
Filling fuel...................................... 47
Operating engine .......................... 48
Sending fuel (portable tank) ............. 48
Starting engine ................................. 49
Checks after starting engine ......... 52
Cooling water ................................... 52
Warming up engine....................... 52
Electric start models ......................... 52
Checks after engine warm up ....... 53
Shifting ............................................. 53
Stop switches ................................... 53
Shifting .......................................... 53
Stopping boat................................ 54
Trolling .......................................... 55
Adjusting trolling speed .................... 55
Stopping engine ............................ 55
Procedure......................................... 55
Trimming outboard motor.............. 56
Adjusting trim angle
(Power trim and tilt)....................... 57
Adjusting trim angle for hydro tilt
models .......................................... 57
Adjusting boat trim............................ 58
Tilting up and down....................... 59
Procedure for tilting up (hydro tilt
models) ......................................... 59
U6D779E0.book Page 2 Tuesday, November 15, 2011 2:33 PM

Table of contents
Procedure for tilting up
(power trim and tilt models)........... 60
Procedure for tilting down
(hydro tilt models) ......................... 62
Procedure for tilting down
(power trim and tilt models)........... 62
Shallow water................................ 63
Hydro tilt models............................... 63
Power trim and tilt models ................ 64
Cruising in other conditions........... 65
Maintenance..................................... 66
Transporting and storing outboard
motor .......................................... 66
Storing outboard motor..................... 66
Procedure......................................... 67
Lubrication........................................ 68
Flushing power unit .......................... 68
Cleaning the outboard motor............ 69
Checking painted surface of
outboard motor.............................. 69
Periodic maintenance.................... 70
Replacement parts ........................... 70
Severe operating conditions............. 70
Maintenance chart 1......................... 71
Maintenance chart 2......................... 73
Greasing........................................... 74
Cleaning and adjusting spark plug ... 76
Inspecting idle speed........................ 76
Changing engine oil.......................... 77
Inspecting wiring and connectors..... 78
Checking propeller ........................... 79
Removing propeller .......................... 80
Installing propeller ............................ 80
Changing gear oil ............................. 81
Cleaning fuel tank............................. 82
Inspecting and replacing anode(s) ... 83
Checking battery (for electric start
models) ......................................... 83
Connecting the battery ..................... 84
Disconnecting the battery................. 84
Storing the battery ............................ 84
Trouble Recovery............................ 85
Troubleshooting ............................ 85
Temporary action in emergency ... 88
Impact damage................................. 88
Replacing fuse.................................. 89
Power trim and tilt will not operate ... 89
Water separator-alert indicator
blinks while cruising ...................... 89
Starter will not operate ..................... 91
Emergency starting engine............... 92
Treatment of submerged motor .... 93
U6D779E0.book Page 3 Tuesday, November 15, 2011 2:33 PM

1
Safety information
EMU33622
Outboard motor safety
Observe these precautions at all times.
EMU36501
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.
●Stop the engine when a person is in the wa-
ter 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 48 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.
U6D779E0.book Page 1 Tuesday, November 15, 2011 2:33 PM

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.
EMU33731
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 stop the engine.
Stay away from swimming areas. Swimmers
can be hard to see.
The propeller can keep moving even when
the motor is in neutral. Stop the engine when
a person is in the water near you.
EMU33751
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.
EMU33772
Avoid collisions
Scan constantly for people, objects, and other
boats. Be alert for conditions that limit your
visibility or block your vision of others.
U6D779E0.book Page 2 Tuesday, November 15, 2011 2:33 PM

Safety information
3
Operate defensively at safe speeds and keep
a safe distance away from people, objects,
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
U6D779E0.book Page 3 Tuesday, November 15, 2011 2:33 PM

General information
4
EMU25171
Identification numbers record
EMU25184
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. EMU25191
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.
EMU37291
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
1. Outboard motor serial number location
1. Outboard motor serial number location
1
ZMU04214
1. Key number
U6D779E0.book Page 4 Tuesday, November 15, 2011 2:33 PM

General information
5
●Product code of model (Approved model
code)
●Code of conformed directives
EMU25205
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. CE marking location
ZMU06040
U6D779E0.book Page 5 Tuesday, November 15, 2011 2:33 PM

General information
6
EMU33523
Read manuals and labels
Before operating or working on this outboard 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.
EMU33832
Warning labels
If these labels are damaged or missing, contact your Yamaha dealer for replacements.
F80B, F80C, F100D
U6D779E0.book Page 6 Tuesday, November 15, 2011 2:33 PM

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
U6D779E0.book Page 7 Tuesday, November 15, 2011 2:33 PM

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
U6D779E0.book Page 8 Tuesday, November 15, 2011 2:33 PM

Specifications and requirements
9
EMU34521
Specifications
TIP:
“(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.
EMU2821P
Dimension:
Overall length:
F100DET 721 mm (28.4 in)
F80BET 721 mm (28.4 in)
F80CED 738 mm (29.1 in)
Overall width:
F100DET 479 mm (18.9 in)
F80BET 479 mm (18.9 in)
F80CED 486 mm (19.1 in)
Overall height L:
F100DET 1582 mm (62.3 in)
F80BET 1582 mm (62.3 in)
F80CED 1596 mm (62.8 in)
Overall height X:
F100DET 1709 mm (67.3 in)
F80BET 1709 mm (67.3 in)
F80CED 1723 mm (67.8 in)
Motor transom height L:
F100DET 536 mm (21.1 in)
F80BET 536 mm (21.1 in)
F80CED 516 mm (20.3 in)
Motor transom height X:
F100DET 664 mm (26.1 in)
F80BET 664 mm (26.1 in)
F80CED 643 mm (25.3 in)
Dry weight (AL) L:
F100DET 172 kg (380 lb)
F80BET 172 kg (380 lb)
F80CED 179 kg (395 lb)
Dry weight (AL) X:
F100DET 178 kg (391 lb)
F80BET 178 kg (391 lb)
F80CED 185 kg (407 lb)
Performance:
Full throttle operating range:
5000–6000 r/min
Rated power:
F100DET 73.6 kW (100 HP)
F80BET 58.8 kW (80 HP)
F80CED 58.8 kW (80 HP)
Idle speed (in neutral):
650-750 r/min
Engine:
Type:
4-stroke DOHC L4 16valves
Displacement:
1596 cm³ (54.0 US oz, 56.3 Imp.oz)
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 starter
Starting carburetion system:
Electronic fuel injection
Valve clearance IN (cold engine):
0.17–0.24 mm (0.0067–0.0094 in)
Valve clearance EX (cold engine):
0.31–0.38 mm (0.0122–0.0150 in)
Min. cold cranking amps (CCA/EN):
430 A
Min. rated capacity (20HR/IEC):
70 Ah
U6D779E0.book Page 9 Friday, November 18, 2011 8:41 AM

Specifications and requirements
10
Maximum generator output:
25 A
Drive unit:
Gear shift positions:
Forward-neutral-reverse
Gear ratio:
F100DET 2.27(25/11)
F80BET 2.27(25/11)
F80CED 2.15(28/13)
Trim and tilt system:
F100DET Power trim and tilt
F80BET Power trim and tilt
F80CED Hydro tilt
Propeller mark:
F100DET K
F80BET K
F80CED K
Fuel and oil:
Recommended fuel:
Regular unleaded gasoline
Min. research octane number:
90
Fuel tank capacity:
25 L (6.61 US gal, 5.50 Imp.gal)
Recommended engine oil:
4-stroke outboard motor oil
Recommended engine oil grade 1:
SAE 10W-30/10W-40/5W-30
API SE/SF/SG/SH/SJ/SL
Engine oil quantity (without oil filter
replacement):
3.5 L (3.70 US qt, 3.08 Imp.qt)
Engine oil quantity (with oil filter
replacement):
3.7 L (3.91 US qt, 3.26 Imp.qt)
Lubrication system:
Wet sump
Recommended gear oil:
Hypoid gear oil
Recommended gear oil grade:
SAE 90 API GL-4
Gear oil quantity:
F100DET 0.670 L (0.708 US qt,
0.590 Imp.qt)
F80BET 0.670 L (0.708 US qt,
0.590 Imp.qt)
F80CED 0.760 L (0.803 US qt,
0.669 Imp.qt)
Tightening torque for engine:
Spark plug:
25 Nm (2.55 kgf-m, 18.4 ft-lb)
Propeller nut:
F100DET 35 Nm (3.57 kgf-m, 25.8 ft-lb)
F80BET 35 Nm (3.57 kgf-m, 25.8 ft-lb)
F80CED 55 Nm (5.61 kgf-m, 40.6 ft-lb)
Engine oil drain bolt:
28 Nm (2.86 kgf-m, 20.7 ft-lb)
Engine oil filter:
18 Nm (1.84 kgf-m, 13.3 ft-lb)
Noise and vibration level:
Operator sound pressure level:
73.2 dB(A)
EMU33554
Installation requirements
EMU33564
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 out-
board motor(s) does not exceed the boats
maximum horsepower 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.
U6D779E0.book Page 10 Tuesday, November 15, 2011 2:33 PM

Specifications and requirements
11
●Because the motor is very heavy, spe-
cial equipment and training is required
to mount it safely.
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
41.
EMU41592
Yamaha Security System
NOTICE
ECM02460
The Yamaha Security System is sold in
conformity with the relevant laws and reg-
ulations regarding radio wave transmis-
sion. Therefore, if this product is used
outside the country where it was sold, it
may violate the laws or regulations regard-
ing radio wave transmission in the country
it is used in. For details, consult your
Yamaha dealer.
The outboard motor with this label is equipped
with the Yamaha Security System to protect
against theft, which consists of the receiver
and remote control transmitter. The engine
can not be started if the security system is in
the lock mode, and only be started in the un-
lock mode. Consult your Yamaha dealer for
installation of the receiver.
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]
EMU34195
Propeller selection
Next to selecting an outboard motor, selecting
the right propeller is one of the most important
purchasing decisions a boater can make. The
type, size, and design of your propeller have
ZMU07305
Minimum cold cranking amps (CCA/EN):
430 A
Minimum rated capacity (20HR/IEC):
70 Ah
U6D779E0.book Page 11 Tuesday, November 15, 2011 2:33 PM

Specifications and requirements
12
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 selected to perform well over a
range of applications, but there may be uses
where a different propeller would be more ap-
propriate.
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, select 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, select 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.
To check the propeller, see page 79.
EMU25761
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.
EMU41952
Engine oil requirements
Select an oil grade according to the average
temperatures in the area where the outboard
motor will be used.
1. Propeller diameter in inches
2. Propeller pitch in inches
3. Type of propeller (propeller mark)
ZMU04606
-
x
123
1. Propeller diameter in inches
2. Propeller pitch in inches
3. Type of propeller (propeller mark)
1. Start-in-gear protection label
ZMU04607
-
x
123
ZMU01713
1
U6D779E0.book Page 12 Tuesday, November 15, 2011 2:33 PM

Specifications and requirements
13
If oil grades listed under Recommended en-
gine oil grade 1 are not available, select an al-
ternative oil grade listed under
Recommended engine oil grade 2.
Recommended engine oil grade 1
Recommended engine oil grade 2
EMU36360
Fuel requirements
EMU36803
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.
NOTICE
ECM01981
●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. E85 is a
fuel containing 85% ethanol and must not be
used in your outboard motor. All ethanol
blends containing more than 10% ethanol can
cause fuel system damage or cause engine
starting and running problems. Yamaha does
not recommend gasohol containing methanol
because it can cause fuel system damage or
engine performance problems.
It is recommended that you install a water-
separating marine fuel filter assembly (10 mi-
cron minimum) between your boat’s fuel tank
and outboard motor when using ethanol. Eth-
anol is known to allow moisture to be ab-
sorbed into boat fuel tanks and systems.
Recommended engine oil:
4-stroke outboard motor oil
Recommended engine oil grade 1:
SAE 10W-30/10W-40/5W-30
API SE/SF/SG/SH/SJ/SL
Recommended engine oil grade 2:
SAE 15W-40/20W-40/20W-50
API SH/SJ/SL
Engine oil quantity (without oil filter re-
placement):
3.5 L (3.70 US qt, 3.08 Imp.qt)
Engine oil quantity (with oil filter re-
placement):
3.7 L (3.91 US qt, 3.26 Imp.qt)
ZMU06854
122˚F
50˚C
104
40
86
30
68
SAE API
SE
SF
SG
SH
SJ
SL
20
50
10
32
0
14
-10
-4
-20
10W–30
10W–40
5W–30
ZMU06855
122˚F
50˚C
104
40
86
30
68
SAE API
SH
SJ
SL
20
50
10
32
0
14
-10
-4
-20
15W–40
20W–40
20W–50
Recommended gasoline:
Regular unleaded gasoline with a
minimum octane rating of 90 (Re-
search Octane Number).
U6D779E0.book Page 13 Tuesday, November 15, 2011 2:33 PM

Specifications and requirements
14
Moisture in the fuel can cause corrosion of
metallic fuel system components, starting and
running complaints and require additional fuel
system maintenance.
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.
EMU36341
Motor disposal requirements
Never illegally discard (dump) the motor.
Yamaha recommends consulting the dealer
about discarding the motor.
EMU36352
Emergency equipment
Keep the following items onboard in case
there is trouble with the outboard 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.
U6D779E0.book Page 14 Tuesday, November 15, 2011 2:33 PM