Yamaha F115 User manual

F115
LF115
F115A1
FL115A1
F150
LF150
F150A1
FL150A1
OWNER’S MANUAL
LIT-18626-09-25
63P-28199-1D
U.S.A.Edition
Read this manual carefully before operating this
outboard motor.
DIC183
©2019 Yamaha Motor Corporation, U.S.A.

ZMU01690
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.
U63P1DE0.book Page 1 Tuesday, March 29, 2011 7:15 PM
©2019 Yamaha Motor Corporation, U.S.A.

Important manual information
EMU31285
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.
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.
T
IP:
The F115A, LF115A, F115AET1,
FL115AET1, F150TR, LF150TR, F150AET1,
FL150AET1 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.
EMU25112
F115, LF115, F115A1, FL115A1,
F150, LF150, F150A1, FL150A1
OWNER’S MANUAL
©2011 by Yamaha Motor Corporation,
U.S.A.
1st edition, March 2011
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Corporation, U.S.A.
is expressly prohibited.
Printed in Japan
P/N LIT-18626-09-25
U63P1DE0.book Page 1 Tuesday, March 29, 2011 7:15 PM
©2019 Yamaha Motor Corporation, U.S.A.

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
Accident reporting .............................. 3
Boat education and training................ 3
Passenger training ............................. 3
Boating safety publications................. 3
Laws and regulations ......................... 4
Boating organizations...................... 4
Basic boating rules
(Rules of the road) ....................... 4
Steering and sailing rules and sound
signals............................................. 4
Rules when encountering vessels...... 5
Other special situations ...................... 6
General information .......................... 9
Identification numbers record.......... 9
Outboard motor serial number ........... 9
Key number ........................................ 9
EC Declaration of Conformity
(DoC)............................................ 9
CE Marking ..................................... 9
Read manuals and labels.............. 11
Warning labels.................................. 11
Warning labels.................................. 14
Specifications and
requirements ................................... 17
Specifications................................ 17
Installation requirements............... 20
Boat horsepower rating .................... 20
Mounting motor ................................ 20
Yamaha Security System
(if equipped) .................................. 20
Remote control requirements........ 21
Battery requirements..................... 21
Specifications of Battery................... 21
Mounting battery............................... 22
Multiple batteries .............................. 22
Propeller selection ........................ 22
Counter rotation models ................... 22
Start-in-gear protection ................. 23
Engine oil requirements ................ 23
Fuel requirements ......................... 24
Gasoline ........................................... 24
Gasoline Additives............................ 26
Anti-fouling paint ........................... 26
Motor disposal requirements......... 26
Emergency equipment .................. 26
Emission control information......... 27
North American models.................... 27
Star labels ........................................ 28
Components .................................... 30
Components diagram.................... 30
Remote control transmitter
(if equipped) .................................. 33
Receiver (if equipped) ...................... 34
Yamaha Security System lock and
unlock mode (if equipped)............. 34
Remote control box .......................... 35
Remote control lever ........................ 35
Neutral interlock trigger .................... 36
Neutral throttle lever ......................... 36
Free accelerator ............................... 36
Tiller handle (if equipped)................. 36
Gear shift lever (if equipped) ............ 37
Throttle grip (if equipped) ................. 37
Throttle indicator (if equipped).......... 37
Throttle friction adjuster.................... 37
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Table of contents
Engine shut-off cord (lanyard) and
clip................................................. 38
Engine stop button (if equipped) ...... 39
Main switch....................................... 39
Steering friction adjuster
(if equipped).................................. 39
Power trim and tilt switch on remote
control or tiller handle.................... 40
Power trim and tilt switch on bottom
cowling .......................................... 40
Power trim and tilt switches
(twin binnacle type) ....................... 41
Trim tab with anode.......................... 41
Tilt support lever for power trim and
tilt model........................................ 42
Cowling lock lever (pull up type)....... 42
Flushing device ................................ 43
Fuel filter/Water separator................ 43
Instruments and indicators ............ 45
Digital tachometer ......................... 45
Tachometer ...................................... 45
Trim meter........................................ 45
Hour meter ....................................... 45
Low oil pressure-alert indicator ........ 46
Overheat-alert indicator.................... 46
Digital speedometer ...................... 46
Speedometer.................................... 46
Fuel gauge ....................................... 47
Trip meter / Clock / Voltmeter........... 47
Fuel level-alert indicator ................... 48
Low battery voltage-alert indicator ... 48
Fuel management meter ............... 48
Fuel flow meter................................. 48
Fuel consumption meter /
Fuel economy meter / Twin
engine speed synchronizer ........... 49
Water separator-alert indicator......... 51
Command Link meter .................... 51
Command Link tachometer ........... 51
Start-up checks ................................ 52
Yamaha Security System information
(if equipped).................................. 52
Low oil pressure-alert....................... 53
Overheat alert................................... 53
Water separator alert........................ 54
Engine trouble alert .......................... 54
Low battery voltage-alert .................. 54
Command Link speed &
fuel meter ................................... 55
Command Link speedometer........ 56
Command Link fuel management
meter.......................................... 56
Engine control system ................... 58
Alert system .................................. 58
Overheat alert (twin engines) ........... 58
Low oil pressure alert ....................... 58
Installation ....................................... 60
Installation..................................... 60
Mounting the outboard motor ........... 60
Operation ......................................... 62
First-time operation ....................... 62
Fill engine oil .................................... 62
Breaking in engine............................ 62
Getting to know your boat ................ 62
Checks before starting engine ...... 62
Fuel level .......................................... 62
Remove cowling ............................... 63
Fuel system ...................................... 63
Controls ............................................ 64
Engine shut-off cord (lanyard) .......... 64
Engine oil.......................................... 65
Engine .............................................. 66
Flushing device ................................ 66
Install cowling ................................... 66
Checking power trim and
tilt system ...................................... 68
Battery .............................................. 69
Filling fuel...................................... 69
Operating engine .......................... 69
Sending fuel ..................................... 69
Starting engine ................................. 70
Checks after starting engine ......... 73
Cooling water ................................... 73
Warming up engine....................... 74
Electric start models ......................... 74
Checks after engine warm up ....... 74
Shifting ............................................. 74
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Table of contents
Stop switches ................................... 74
Shifting .......................................... 74
Stopping boat ................................ 76
Stopping engine ............................ 76
Procedure......................................... 76
Trimming outboard motor.............. 77
Adjusting trim angle
(Power trim and tilt)....................... 78
Adjusting boat trim............................ 79
Tilting up and down ....................... 79
Procedure for tilting up
(power trim and tilt models)........... 80
Procedure for tilting down
(power trim and tilt models)........... 82
Shallow water................................ 82
Power trim and tilt models ................ 82
Operating in other conditions ........ 83
Maintenance..................................... 84
Transporting and storing outboard
motor .......................................... 84
Storing outboard motor..................... 84
Procedure......................................... 85
Lubrication........................................ 86
Cleaning and anticorrosion
measures ...................................... 86
Flushing power unit .......................... 86
Cleaning the outboard motor............ 87
Checking painted surface of
outboard motor.............................. 87
Periodic maintenance.................... 87
Replacement parts ........................... 88
Maintenance interval guidelines ....... 88
Maintenance chart 1......................... 89
Maintenance chart 2......................... 91
Greasing........................................... 92
Cleaning and adjusting spark plug ... 94
Inspecting idle speed........................ 94
Changing engine oil.......................... 95
Inspecting wiring and connectors ..... 97
Checking propeller ........................... 98
Removing propeller .......................... 98
Installing propeller ............................ 99
Changing gear oil ............................. 99
Inspecting and replacing
anode(s)...................................... 101
Checking battery
(for electric start models) ............ 101
Connecting the battery ................... 102
Disconnecting the battery............... 103
Storing the battery .......................... 104
Trouble Recovery.......................... 105
Troubleshooting .......................... 105
Temporary action
in emergency ........................... 108
Impact damage............................... 108
Running single engine
(twin engines).............................. 109
Replacing fuse................................ 109
Power trim and tilt will not
operate........................................ 110
Water separator-alert indicator
blinks while cruising .................... 110
Starter will not operate (F115,
LF115, F115A1, FL115A1) ......... 113
Emergency starting engine (F115,
LF115, F115A1, FL115A1) ......... 114
Treatment of submerged
motor........................................ 115
Consumer information ................. 116
YAMAHA MOTOR
CORPORATION, U.S.A.
FOUR-STROKE OUTBOARD
MOTOR THREE-YEAR
LIMITED WARRANTY ............. 116
IMPORTANT WARRANTY
INFORMATION IF YOU USE
YOUR YAMAHA OUTSIDE
THE USA OR CANADA ........... 118
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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 69 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.
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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.
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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.
EMU33800
Accident reporting
Boat operators are required by law to file a
Boating Accident Report with their state boat-
ing law enforcement agency if their boat is in-
volved in any of the following accidents:
1. There is loss of life or probable loss of life.
2. There is personal injury that requires
medical attention beyond first aid.
3. There is property damage to boats or oth-
er property over a certain amount.
4. There is complete loss of a boat.
Contact local law enforcement personnel if a
report is necessary.
EMU33870
Boat education and training
Operators should take a boating safety
course. This may be required in your state.
Many of the organizations listed in the next
section can provide information about cours-
es in your area.
You may also want to consider an Internet-
based program for basic boater education.
The Online Boating Safety Course provided
by the BoatU.S. Foundation, is approved by
the National Association of State Boating Law
Administrators (NASBLA) and recognized by
the United States Coast Guard. Most, but not
all, states accept this course to meet their
minimum requirements. While it cannot re-
place an in-depth course such as one offered
by the U.S. Coast Guard, U.S. Power Squad-
ron, or other organization, this online course
does provide a general overview of the basics
in boating safety, requirements, navigation,
and operation. Upon successful completion of
the course, the user can download a certifi-
cate of completion immediately or, for a small
charge, request one by mail. To take this free
course, go to boatus.org.
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.
ZMU06025
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Safety information
4
EMU33590
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. The rules
presented in the following section are con-
densed- and have been provided for your
convenience only.
Contact the U.S. Coast Guard, the National
Association of State Boating Law Administra-
tors, or your local Power Squadron for a com-
plete set of rules governing the waters in
which you will be using your boat.
EMU33682
Boating organizations
The following organizations provide boating
safety training and information about boating
safety and laws.
United States Coast Guard
Consumer Affairs Staff (G-BC)
Office of Boating, Public, and Consumer Af-
fairs
U.S. Coast Guard Headquarters
Washington, D.C. 20593-0001
http://www.uscgboating.org/
United States Power Squadrons
1-888-FOR-USPS (1-888-367-8777)
http://www.usps.org/
Boat Owners Association of The United
States
1-800-336-BOAT (1-800-336-2628)
http://www.boatus.com/
National Association of State Boating Law
Administrators (NASBLA)
1500 Leestown Road, Suite 330
Lexington, KY 40511 859-225-9497
http://www.nasbla.org/
National Marine Manufacturers Associa-
tion (NMMA)
200 East Randolph Drive
Suite 5100
Chicago, IL 60601
http://www.nmma.org/
Marine Retailers Association of America
155 N. Michigan Ave. Chicago,
IL 60304
http://www.mraa.com/
EMU33691
Basic boating rules (Rules of
the road)
Just as there are rules that apply when you
are driving on streets and highways, there are
waterway rules that apply when you are driv-
ing your boat. These rules are used interna-
tionally. (For U.S.A.: and are also enforced by
the United States Coast Guard and local
agencies.) You should be aware of these
rules, and follow them whenever you encoun-
ter another vessel on the water.
EMU33700
Steering and sailing rules and sound
signals
Whenever two vessels on the water meet one
another, one vessel has the right-of-way; it is
called the “stand-on”vessel. The vessel that
does not have the right-of-way is called the
“give-way”or “burdened”vessel. These rules
determine which vessel has the right-of-way,
and what each vessel should do.
Stand-on vessel
The vessel with the right-of-way has the duty
to continue its course and speed, except to
avoid an immediate collision. When you main-
tain your direction and speed, the other vessel
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