Yamaha F150D User manual

Read this manual carefully before operating this
outboard motor.
OWNER’S MANUAL
F150D
FL150D
F150F
63P-28199-7K-E0
U63P7KE0.book Page 1 Wednesday, November 29, 2017 11:06 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.
U63P7KE0.book Page 1 Wednesday, November 29, 2017 11:06 AM

Important manual information
EMU25108
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
EWM00782
A WARNING indicates a hazardous situa-
tion which, if not avoided, could result in
death or serious injury.
NOTICE
ECM00702
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 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 manual,
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 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 speci-
fied services.
TIP:
The F150DET, FL150DET, F150FET 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.
EMU25122
F150D, FL150D, F150F
OWNER’S MANUAL
©2017 by Yamaha Motor Co., Ltd.
1st Edition, November 2017
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Co., Ltd.
is expressly prohibited.
Printed in Japan
U63P7KE0.book Page 1 Wednesday, November 29, 2017 11:06 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 ............................................. 2
Gasoline exposure and spills ............. 2
Carbon monoxide .............................. 2
Modifications...................................... 2
Boating safety ................................. 2
Alcohol and drugs .............................. 2
Personal flotation devices (PFDs) ...... 2
People in the water ............................ 2
Passengers......................................... 2
Overloading........................................ 2
Avoid collisions .................................. 3
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
Compliance mark label ................... 5
Read manuals and labels................ 6
Warning labels ................................... 6
Specifications and requirements..... 9
Specifications.................................. 9
Installation requirements............... 10
Boat horsepower rating.................... 10
Mounting outboard motor ................ 10
Remote control requirements ....... 10
Battery requirements..................... 11
Battery specifications....................... 11
Propeller selection ........................ 11
Counter rotation models .................. 12
Start-in-gear protection ................ 12
Engine oil requirements ................ 12
Fuel requirements ......................... 13
Gasoline ........................................... 13
Muddy or acidic water .................. 13
Anti-fouling paint .......................... 13
Outboard motor disposal
requirements.............................. 13
Emergency equipment.................. 14
Emission control information ........ 14
Star labels ........................................ 14
Components.................................... 16
Components diagram ................... 16
Optional items .................................. 18
Yamaha Security System (Y-COP) ... 18
Remote control box.......................... 19
Remote control lever ........................ 19
Neutral interlock trigger.................... 20
Neutral throttle lever......................... 20
Free accelerator ............................... 20
Throttle friction adjuster ................... 21
Engine shut-off cord (lanyard) and
clip ................................................ 21
Main switch ...................................... 22
Power trim and tilt switch on remote
control........................................... 22
Power trim and tilt switch on bottom
cowling.......................................... 23
Power trim and tilt switches (twin
binnacle type)................................ 23
Trim tab with anode ......................... 24
Tilt support lever for power trim
and tilt model ................................ 24
Cowling lock lever ............................ 25
Flushing device ................................ 25
Fuel filter........................................... 25
Instruments and indicators ............ 26
Digital tachometer......................... 26
Tachometer ...................................... 26
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Table of contents
Trim meter ........................................ 26
Hour meter ....................................... 26
Low oil pressure-alert indicator........ 26
Overheat-alert indicator ................... 27
Digital speedometer ...................... 27
Speedometer.................................... 27
Fuel gauge........................................ 28
Trip meter / Clock / Voltmeter.......... 28
Fuel level-alert indicator ................... 29
Low battery voltage-alert
indicator ........................................ 29
Fuel management meter ............... 29
Fuel flow meter................................. 29
Fuel consumption meter / Fuel
economy meter / Twin engine
speed synchronizer....................... 30
Water separator-alert indicator ........ 32
6YC Multifunction meter ............... 32
6Y8 Multifunction meters .............. 35
Engine control system .................... 39
Alert system .................................. 39
Overheat alert................................... 39
Low oil pressure alert....................... 40
Water separator alert........................ 40
Installation ....................................... 42
Installation ..................................... 42
Mounting the outboard motor.......... 42
Operation ......................................... 44
First-time operation....................... 44
Fill engine oil .................................... 44
Breaking in engine............................ 44
Getting to know your boat ............... 44
Checks before starting engine ...... 44
Fuel level .......................................... 45
Removing top cowling ..................... 45
Fuel system ...................................... 45
Controls............................................ 46
Engine shut-off cord (lanyard).......... 46
Engine oil.......................................... 46
Engine .............................................. 47
Flushing device ................................ 47
Installing top cowling ....................... 47
Checking power trim and tilt
system........................................... 48
Battery.............................................. 49
Filling fuel ..................................... 50
Operating engine .......................... 50
Sending fuel ..................................... 50
Starting engine ................................. 51
Checks after starting engine......... 52
Cooling water ................................... 52
Warming up engine....................... 53
Procedure for warming up engine.... 53
Checks after engine warm up....... 53
Shifting ............................................. 53
Stop switches................................... 53
Shifting.......................................... 53
Stopping boat ............................... 55
Stopping engine............................ 55
Procedure......................................... 55
Trimming outboard motor............. 55
Adjusting trim angle (Power trim
and tilt) .......................................... 56
Adjusting boat trim ........................... 56
Tilting up and down ...................... 57
Procedure for tilting up..................... 58
Procedure for tilting down................ 59
Shallow water .............................. 60
Cruising in shallow water ................. 60
Cruising in other conditions.......... 61
Maintenance.................................... 62
Transporting and storing
outboard motor.......................... 62
Storing outboard motor.................... 62
Procedure......................................... 63
Lubrication ....................................... 64
Flushing cooling water passage....... 64
Cleaning the outboard motor ........... 65
Checking painted surface of
outboard motor ............................. 65
Periodic maintenance ................... 66
Replacement parts ........................... 66
Severe operating conditions ............ 66
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Table of contents
Maintenance chart 1 ........................ 67
Maintenance chart 2 ........................ 69
Greasing........................................... 70
Inspecting spark plug....................... 71
Inspecting idle speed ....................... 72
Changing engine oil.......................... 72
Inspecting wiring and connectors .... 75
Checking propeller ........................... 75
Removing propeller .......................... 76
Installing propeller ............................ 76
Changing gear oil ............................. 77
Inspecting and replacing anode(s) ... 79
Checking battery (for electric start
models) ......................................... 79
Connecting the battery..................... 80
Disconnecting the battery ................ 81
Trouble Recovery ............................ 83
Troubleshooting ............................ 83
Temporary action in emergency ... 86
Impact damage ................................ 86
Running single engine (twin
engines) ........................................ 86
Replacing fuse ................................. 87
Power trim and tilt will not
operate.......................................... 87
Water separator alert is activated
after leaving port........................... 88
Treatment of submerged motor .... 89
INDEX ............................................... 90
U63P7KE0.book Page 3 Wednesday, November 29, 2017 11:06 AM

1
Safety information
EMU33623
Outboard motor safety
Observe these precautions at all times.
EMU36502
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
water near you.
Keep people out of reach of the propeller,
even when the engine is off.
EMU40272
Rotating parts
Hands, feet, hair, jewelry, clothing, personal
flotation device (PFD) straps, etc., can be-
come entangled with internal rotating parts of
the engine, resulting in serious injury or
death.
Keep the top cowling in place whenever pos-
sible. Do not remove or replace the top cowl-
ing with the engine running.
Only operate the engine with the top cowling
removed according to the specific instruc-
tions in the manual. Keep hands, feet, hair,
jewelry, clothing, PFD straps, etc., away from
any exposed moving parts.
EMU33641
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.
EMU33651
Electric shock
Do not touch any electrical parts while start-
ing or operating the engine. They can cause
shock or electrocution.
EMU33661
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
mechanism.
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.
EMU33672
Engine shut-off cord (lanyard)
Attach the engine shut-off cord so that the
engine 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 be-
come entangled, preventing it from function-
ing.
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.
U63P7KE0.book Page 1 Wednesday, November 29, 2017 11:06 AM

Safety information
2
EMU33811
Gasoline
Gasoline and its vapors are highly flamma-
ble and explosive. Always, refuel according
to the procedure on page 50 to reduce the
risk of fire and explosion.
EMU33821
Gasoline exposure and spills
Take care not to spill gasoline. If gasoline
spills, wipe it up immediately with dry rags.
Dispose of rags properly.
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.
EMU33901
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
exhaust outlets.
EMU33781
Modifications
Do not attempt to modify this outboard mo-
tor. Modifications to your outboard motor
may reduce safety and reliability, and render
the outboard unsafe or illegal to use.
EMU33741
Boating safety
This section includes a few of the many im-
portant safety precautions that you should
follow when boating.
EMU33711
Alcohol and drugs
Never operate after drinking alcohol or taking
drugs. Intoxication is one of the most com-
mon factors contributing to boating fatalities.
EMU40281
Personal flotation devices (PFDs)
Have an approved PFD on board for every
occupant. Yamaha recommends that you
must wear a PFD whenever boating. At a mi-
nimum, children and non-swimmers should
always wear PFDs, and everyone should
wear PFDs when there are potentially hazard-
ous boating conditions.
EMU33732
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.
EMU33752
Passengers
Consult your boat manufacturer’s instruc-
tions for details about appropriate passenger
locations in your boat and be sure all passen-
gers are positioned properly before acceler-
ating and when operating above an idle
speed. Standing or sitting in non-designated
locations may result in being thrown either
overboard or within the boat due to waves,
wakes, or sudden changes in speed or direc-
tion. Even when people are positioned prop-
erly, alert your passengers if you must make
any unusual maneuver. Always avoid jump-
ing waves or wakes.
EMU33762
Overloading
Do not overload the boat. Consult the boat
capacity plate or boat manufacturer for maxi-
mum weight and number of passengers. Be
sure that weight is properly distributed ac-
cording to the boat manufacturer’s instruc-
U63P7KE0.book Page 2 Wednesday, November 29, 2017 11:06 AM

Safety information
3
tions. Overloading or incorrect weight
distribution can compromise the boats han-
dling and lead to an accident, capsizing or
swamping.
EMU33773
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.
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 aggres-
sive maneuvers to reduce the risk of loss of
control, 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 an-
other direction.
EMU33791
Weather
Stay informed about the weather. Check
weather forecasts before boating. Avoid
boating in hazardous weather.
EMU33881
Passenger training
Make sure at least one other passenger is
trained to operate the boat in the event of an
emergency.
EMU33891
Boating safety publications
Be informed about boating safety. Additional
publications and information can be obtained
from many boating organizations.
EMU33602
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
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General information
4
EMU25172
Identification numbers record
EMU25186
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.
EMU25192
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. Re-
cord this number in the space provided for
reference in case you need a new key.
EMU38981
EC Declaration of Conformity
(DoC)
This declaration is included with outboard
motors that conform to European regula-
tions.
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
EMU38995
CE Marking
This label is affixed to outboard motors that
conform to European regulations.
1. Outboard motor serial number location
1. Serial number
2. Model name
3. Motor transom height
4. Approved model code
1
ZMU08223
3412
ZMU01692
1. Key number
1
ZMU01694
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General information
5
Outboard motors affixed with this “CE” mark-
ing conform with the directives of;
2006/42/EC, 94/25/EC - 2003/44/EC,
2014/30/EU, and 2004/108/EC, 2013/53/EU.
EMU46133
Compliance mark label
Engines affixed with this label conform to the
regulations for each country.
This label is affixed to the clamp bracket or
swivel bracket.
Regulatory Compliance Mark (RCM)
Engines affixed with this mark conform to
certain portion(s) of the Australian Radio
Communications Act.
ICES-002 Compliance Label
Engines affixed with this mark meet all re-
quirements of the Canadian Interference
Causing Equipment Regulations.
1. CE marking location
1
ZMU08264
ZMU08148
2500 SHINGAI, IWATA,
SHIZUOKA, JAPAN
YAMAHA MOTOR CO., LTD.
YAMAHA
1. Compliance mark label location
1. Regulatory Compliance Mark (RCM)
1. ICES-002 Compliance Label
1
ZMU08266
ZMU08190
1
ZMU08191
1
U63P7KE0.book Page 5 Wednesday, November 29, 2017 11:06 AM

General information
6
EMU33524
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.
EMU33836
Warning labels
If these labels are damaged or missing, contact your Yamaha dealer for replacements.
2
3
1
ZMU06189
U63P7KE0.book Page 6 Wednesday, November 29, 2017 11:06 AM

General information
7
EMU34652
Contents of labels
The above warning labels mean as follows.
1
WARNING
EWM01682
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.
2
WARNING
EWM01672
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.
EMU33851
Other labels
6EE-G2794-40
6EE-H1994-40
12
6EE-G2794-50
6EE-H1994-50
ZMU06191
3
ZMU05710
U63P7KE0.book Page 7 Wednesday, November 29, 2017 11:06 AM

General information
8
EMU35133
Symbols
The following symbols mean as follows.
Notice/Warning
Read Owner’s Manual
Hazard caused by continuous rotation
Electrical hazard
ZMU05696
ZMU05664
ZMU05665
ZMU05666
U63P7KE0.book Page 8 Wednesday, November 29, 2017 11:06 AM

Specifications and requirements
9
EMU40501
Specifications
TIP:
“(SUS)” indicates that the specification is for
the outboard motor when it is equipped with
a stainless steel propeller.
EMU2821V
Dimension and weight:
Overall length:
920 mm (36.2 in)
Overall width:
548 mm (21.6 in)
Overall height L:
1742 mm (68.6 in) (F150DET,
FL150DET)
Overall height X:
1869 mm (73.6 in)
Motor transom height L:
516 mm (20.3 in) (F150DET, FL150DET)
Motor transom height X:
643 mm (25.3 in)
Dry weight (SUS) L:
222 kg (489 lb) (F150DET, FL150DET)
Dry weight (SUS) X:
223 kg (492 lb) (F150FET)
227 kg (500 lb) (F150DET, FL150DET)
Performance:
Full throttle operating range:
4500–5500 r/min (F150FET)
5000–6000 r/min (F150DET, FL150DET)
Rated power:
110.3 kW (150 HP)
Idle speed (in neutral):
650–750 r/min
Power unit:
Type:
4-stroke DOHC L4 16 valves
Total displacement:
2670 cm³ (162.9 c.i.)
Bore ×stroke:
94.0 ×96.2 mm (3.70 ×3.79 in)
Ignition system:
TCI
Spark plug (NGK):
LFR5A-11
Spark plug gap:
1.0–1.1 mm (0.039–0.043 in)
Steering system:
Remote steering
Starting system:
Electric starter
Starting carburetion system:
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)
Battery rating (CCA/EN):
510–1080 A
Battery rating (20HR/IEC):
80 Ah
Maximum generator output:
35 A
Lower unit:
Gear shift positions:
Forward-neutral-reverse
Gear ratio:
2.00 (28/14)
Trim and tilt system:
Power trim and tilt
Propeller mark:
M/T (F150DET, F150FET)
ML/TL (FL150DET)
Fuel and oil:
Recommended fuel:
Regular unleaded gasoline
Min. research octane number (RON):
90
Recommended engine oil:
YAMALUBE 4 or 4-stroke outboard
motor oil
U63P7KE0.book Page 9 Wednesday, November 29, 2017 11:06 AM

Specifications and requirements
10
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):
4.3 L (4.55 US qt, 3.78 Imp.qt)
Engine oil quantity (with oil filter
replacement):
4.5 L (4.76 US qt, 3.96 Imp.qt)
Lubrication system:
Wet sump
Recommended gear oil:
YAMALUBE outboard gear oil or Hypoid
gear oil
Recommended gear oil grade:
SAE 90 API GL-4 / SAE 80W API GL-5 /
SAE 90 API GL-5
Gear oil quantity:
0.980 L (1.036 US qt, 0.862 Imp.qt)
Tightening torque:
Spark plug:
25 N·m (2.55 kgf·m, 18.4 lb·ft)
Propeller nut:
54 N·m (5.51 kgf·m, 39.8 lb·ft)
Engine oil drain bolt:
27 N·m (2.75 kgf·m, 19.9 lb·ft)
Engine oil filter:
18 N·m (1.84 kgf·m, 13.3 lb·ft)
Noise and vibration level:
Operator sound pressure level (ICOMIA
39/94):
79.6 dB(A)
EMU33556
Installation requirements
EMU33565
Boat horsepower rating
WARNING
EWM01561
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.
EMU40491
Mounting outboard motor
WARNING
EWM02501
Improper mounting of the outboard mo-
tor could result in hazardous conditions
such as poor handling, loss of control,
or fire hazards.
Because the outboard motor is very
heavy, special equipment and training is
required to mount it safely.
Your dealer or other person experienced in
proper rigging should mount the outboard
motor using correct equipment and complete
rigging instructions. For further information,
see page 42.
EMU33582
Remote control requirements
WARNING
EWM01581
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.
U63P7KE0.book Page 10 Wednesday, November 29, 2017 11:06 AM

Specifications and requirements
11
EMU25695
Battery requirements
EMU25723
Battery specifications
The engine cannot be started if battery volt-
age is too low.
EMU36293
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.
[EWM01821]
Battery cable
The battery cable size and length are critical.
Consult your Yamaha dealer about the bat-
tery cable size and length.
EMU36303
Multiple batteries
To connect multiple batteries, such as for
multiple engine configurations or for an ac-
cessory battery, consult your Yamaha dealer
about battery selection and correct wiring.
Battery isolator
Your outboard motor is capable of charging
an accessory battery separate from the start-
ing battery using an optional isolator lead.
Contact your Yamaha dealer for installation
of an optional isolator lead with over-current
protection.
EMU41604
Propeller selection
Next to selecting an outboard motor, select-
ing the right propeller is one of the most im-
portant purchasing decisions a boater can
make. The type, size, and design of your pro-
peller have a direct impact on acceleration,
top speed, fuel economy, and even engine
life. Yamaha designs and manufactures pro-
pellers for every Yamaha outboard motor and
every application.
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.
Yamaha recommends to use a propeller suit-
able for the “Shift Dampener System (SDS)”.
For further information, consult your Yamaha
dealer.
To check the propeller, see page 75.
Propeller example
Battery rating (CCA/EN):
510–1080 A
Battery rating (20HR/IEC):
80 Ah
1. Propeller diameter in inches
31
2
-
x
123
A
AB
A
B
ZMU08845
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Specifications and requirements
12
EMU36313
Counter rotation models
Standard outboard motors rotate clockwise.
Counter rotation models rotate counterclock-
wise and are typically used in multiple motor
setups.
On counter rotation models, be sure to use a
propeller intended for counterclockwise rota-
tion. These propellers are identified with the
letter “L” after the size indication on the pro-
peller. WARNING! Never use a standard
propeller with a counter rotation motor, or
a counter rotation propeller with a stan-
dard motor. Otherwise the boat could go
in the direction opposite of that expected
(for example, reverse instead of forward),
which could lead to an accident. [EWM01811]
For instructions on propeller removal and ins-
tallation, see page 76.
EMU25771
Start-in-gear protection
Yamaha outboard motors or Yamaha-ap-
proved remote control 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 be-
fore starting the engine.
EMU41953
Engine oil requirements
Select an oil grade according to the average
temperatures in the area where the outboard
motor will be used.
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
2. Propeller pitch in inches
3. Type of propeller (propeller mark)
Recommended engine oil:
YAMALUBE 4 or 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
replacement):
4.3 L (4.55 US qt, 3.78 Imp.qt)
Engine oil quantity (with oil filter re-
placement):
4.5 L (4.76 US qt, 3.96 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
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Specifications and requirements
13
EMU36361
Fuel requirements
EMU40202
Gasoline
Use a good quality gasoline that meets the
minimum octane rating. If knocking or ping-
ing occurs, use a different brand of gasoline
or premium unleaded fuel.
NOTICE
ECM01982
Do not use leaded gasoline. Leaded
gasoline can seriously damage the en-
gine.
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 en-
gine 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.
Moisture in the fuel can cause corrosion of
metallic fuel system components, starting
and running complaints and require addition-
al fuel system maintenance.
EMU36881
Muddy or acidic water
Yamaha strongly recommends that you have
your dealer install the optional chromium-
plated water pump kit if you use the outboard
motor in muddy or acidic water conditions.
However, depending on the model it might
not be required.
EMU36331
Anti-fouling paint
A clean hull improves boat performance. The
boat bottom should be kept as clean of mari-
ne growth as possible. If necessary, the boat
bottom 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.
EMU40302
Outboard motor disposal re-
quirements
Never illegally discard (dump) the outboard
motor. Yamaha recommends consulting the
dealer about discarding the outboard motor.
Recommended fuel:
Regular unleaded gasoline
Min. research octane number (RON):
90
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Specifications and requirements
14
EMU36353
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.
EMU39001
Emission control information
The following labels are affixed to outboard
motors that conform to US regulations.
EMU25232
This engine conforms to U.S. Environmental
Protection Agency (EPA) regulations for mari-
ne SI engines. See the label affixed to your
engine for details.
EMU31563
Approval label of emission control certifi-
cate
This label is attached at the location shown.
New Technology; (4-stroke) MFI
EMU25275
Star labels
Your outboard motor is labeled with a Califor-
nia Air Resources Board (CARB) star label.
See below for a description of your particular
label.
EMU40331
One Star—Low Emission
The one-star label identifies engines that
meet the Air Resources Board’s Personal
Watercraft and Outboard marine engine 2001
exhaust emission standards. Engines meet-
ing these standards have 75% lower emis-
sions than conventional carbureted two-
stroke engines. These engines are equivalent
to the U.S. EPA’s 2006 standards for marine
engines.
1. Approval label location
1
ZMU08272
1. Star labels location
EMISSION CONTROL INFORMATION
THIS ENGINE CONFORMS TO CALIFORNIA EXHAUST
AND U.S. EPA EXHAUST AND EVAP REGULATIONS FOR SI
MARINE ENGINES. REFER TO OWNER’S MANUAL FOR
MAINTENANCE SPECIFICATIONS AND ADJUSTMENTS.
FAMILY : DISPLACEMENT : liters
MAX POWER : kW FEL : HC+NOx ,CO g/kW-h
EPA CERTIFIED EVAP COMPONENTS :
YAMAHA MOTOR CO.,LTD.
ZMU06894
1
ZMU07737
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