Yamaha 115C, 130B User Manual

OWNER’S MANUAL

Read this manual carefully before operating this

outboard motor.

115C
130B

6N6-28199-78-E0

EMU25052

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.

Important manual information

WARNING

NOTICE

TIP:

TIP:

EMU25107

To the owner

Thank you for selecting a Yamaha outboard
motor. This Owner’s Manual contains infor­mation needed for proper operation, mainte­nance 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
hazards. Obey all safety messages that fol­low this symbol to avoid possible injury or
death.

EWM00781

A WARNING indicates a hazardous situa­tion which, if not avoided, could result in
death or serious injury.

ECM00701

A NOTICE indicates special precautions
that must be taken to avoid damage to the
outboard motor or other property.

there is any question concerning this manu­al, please consult your Yamaha dealer.
To ensure long product life, Yamaha recom­mends that you use the product and perform
the specified periodic inspections and main­tenance by correctly following the instruc­tions in the owner’s manual. Any damage
resulting from neglect of these instructions is
not covered by warranty.
Some countries have laws or regulations re­stricting users from taking the product out of
the country where it was purchased, and it
may be impossible to register the product in
the destination country. Additionally, the war­ranty may not apply in certain regions. When
planning to take the product to another coun­try, consult the dealer where the product was
purchased for further information.
If the product was purchased used, please
consult your closest dealer for customer re­registration, and to be eligible for the speci­fied services.

The 115CETO, 130BETO and the standard
accessories are used as a base for the ex­planations and illustrations in this manual.
Therefore some items may not apply to ev­ery model.

EMU25121

A TIP provides key information to make pro­cedures easier or clearer.

Yamaha continually seeks advancements in
product design and quality. Therefore, while
this manual contains the most current prod­uct information available at the time of print­ing, there may be minor discrepancies
between your machine and this manual. If

115C, 130B

OWNER’S MANUAL

©2012 by Yamaha Motor Co., Ltd.

1st Edition, September 2012

All rights reserved.

Any reprinting or unauthorized use

without the written permission of

Yamaha Motor Co., Ltd.
is expressly prohibited.

Printed in Japan

Table of contents

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 ............ 2

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 ................................. 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 .....................................5

Read manuals and labels................. 6

Warning labels ................................. 6

Specifications and

requirements...................................... 9

Specifications ................................... 9

Installation requirements ................ 10

Boat horsepower rating................... 10

Mounting motor ............................... 10

Remote control requirements.........10

Battery requirements......................11

Battery specifications ...................... 11

Mounting battery ............................. 11

Multiple batteries............................. 11

Propeller selection.......................... 11

Start-in-gear protection .................. 12

Engine oil requirements ................. 12

Fuel requirements.......................... 12

Gasoline .......................................... 12

Muddy or acidic water.................... 13

Anti-fouling paint ............................ 13

Motor disposal requirements.......... 13

Emergency equipment................... 13

Components .................................... 14

Components diagram..................... 14

Fuel tank ......................................... 14

Fuel joint.......................................... 15

Fuel gauge ...................................... 15

Fuel tank cap................................... 15

Air vent screw.................................. 15

Remote control box ......................... 15

Remote control lever ....................... 15

Neutral interlock trigger ................... 16

Neutral throttle lever........................16

Choke switch...................................16

Throttle friction adjuster................... 17

Engine shut-off cord

(lanyard) and clip ..........................17

Choke knob for pull type ................. 17

Main switch ..................................... 18

Power trim and tilt switch on

remote control ............................... 18

Power trim and tilt switch on

bottom cowling .............................. 18

Trim tab with anode......................... 19

Tilt support lever for power trim

and tilt model................................. 19

Top cowling release lever ............... 20

Flushing device ............................... 21

Instruments and indicators............ 22

Digital tachometer .......................... 22

Tachometer ..................................... 22

Trim meter.......................................22

Hour meter ...................................... 22

Oil level indicator (digital type) ........ 23

Overheat-alert indicator................... 23

Digital speedometer ....................... 23

Speedometer................................... 23

Fuel gauge ...................................... 24

Trip meter / Clock / Voltmeter ......... 24

Table of contents

Fuel level-alert indicator.................. 25

Low battery voltage-alert

indicator ........................................ 25

Engine control system.................... 26

Alert system ...................................26

Overheat alert ................................. 26

Oil level alert and oil filter

clogging alert ................................ 26

Installation .......................................28

Installation ...................................... 28

Mounting the outboard motor.......... 28

Operation .........................................30

First-time operation ........................ 30

Breaking in engine .......................... 30

Getting to know your boat ............... 30

Checks before starting engine .......30

Fuel level......................................... 31

Remove the top cowling.................. 31

Fuel system..................................... 31

Controls........................................... 31

Engine shut-off cord (lanyard)......... 32

Oil.................................................... 32

Engine............................................. 32

Operation after long period of

storage.......................................... 32

Flushing device ............................... 32

Install cowling.................................. 33

Checking power trim and

tilt system...................................... 33

Battery............................................. 34

Filling fuel and engine oil................ 35

Filling fuel for portable tank............. 35

Filling fuel for models without a

fuel joint ........................................ 36

Filling oil .......................................... 36

Oil level indicator operation............. 38

Operating engine............................ 39

Sending fuel (portable tank)............ 40

Sending fuel .................................... 40

Starting engine................................ 40

Checks after starting engine ..........42

Cooling water .................................. 42

Warming up engine ........................ 43

Choke start models ......................... 43

Checks after engine warm up ........ 43

Shifting ............................................ 43

Stop switches .................................. 43

Shifting........................................... 43

Stopping boat................................. 44

Stopping engine............................. 44

Procedure........................................ 44

Trimming outboard motor............... 44

Adjusting trim angle

(Power trim and tilt)....................... 45

Adjusting boat trim .......................... 46

Tilting up and down........................ 47

Procedure for tilting up

(power trim and tilt models)........... 47

Procedure for tilting down

(power trim and tilt models)........... 48

Shallow water ................................ 49

Power trim and tilt models...............49

Cruising in other conditions............ 49

Maintenance .................................... 51

Transporting and storing

outboard motor ............................ 51

Storing outboard motor ................... 51

Procedure........................................ 52

Lubrication

(oil injection models) ..................... 53

Flushing power unit ......................... 53

Cleaning the outboard motor .......... 54

Checking painted surface of

outboard motor.............................. 54

Periodic maintenance .................... 54

Replacement parts .......................... 54

Severe operating conditions............ 55

Maintenance chart 1........................ 56

Maintenance chart 2........................ 58

Greasing.......................................... 59

Cleaning and adjusting

spark plug .....................................59

Checking fuel filter........................... 60

Inspecting idle speed ...................... 60

Checking water in engine

oil tank........................................... 61

Inspecting wiring and

connectors ....................................61

Checking propeller .......................... 61

Table of contents

Removing propeller......................... 62

Installing propeller........................... 62

Changing gear oil............................ 63

Cleaning fuel tank ........................... 64

Inspecting and replacing

anode(s)........................................ 65

Checking battery

(for electric start models) .............. 65

Connecting the battery.................... 66

Disconnecting the battery ............... 66

Trouble Recovery............................ 67

Troubleshooting .............................67

Temporary action in

emergency ...................................70

Impact damage ............................... 70

Replacing fuse ................................ 70

Power trim and tilt will not

operate.......................................... 71

Starter will not operate .................... 71

Emergency starting engine ............. 72

Engine fails to operate ...................73

Low oil level alert activates ............. 73

Top cowling does not unlock..........74

Treatment of submerged motor...... 74

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
neutral, 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.

EMU33630

Rotating parts

Hands, feet, hair, jewelry, clothing, PFD
straps, etc. can become entangled with inter­nal rotating parts of the engine, resulting in
serious injury or death.
Keep the top cowling in place whenever pos­sible. Do not remove or replace the cowling
with the engine running.
Only operate the engine with the cowling re­moved according to the specific instructions
in the manual. Keep hands, feet, hair, jewel­ry, clothing, PFD straps, etc. away from any
exposed 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 en­gine 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
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.
Severe injury could occur if the outboard mo­tor accidentally falls.

EMU33671

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
people stranded, or running over people or
objects.
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 at­tach the cord to clothing that could tear
loose, or route the cord where it could be­come entangled, 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 ob­jects forward.

EMU33810

Gasoline

Gasoline and its vapors are highly flam­mable and explosive. Always, refuel ac-

cording to the procedure on page 39 to
reduce the risk of fire and explosion.

1

Safety information

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.
If any gasoline spills onto your skin, immedi­ately wash with soap and water. Change
clothing if gasoline spills on it.
If you swallow gasoline, inhale a lot of gaso­line 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 con­tain 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.

EMU33780

Modifications

Do not attempt to modify this outboard mo­tor. Modifications to your outboard motor
may reduce safety and reliability, and render
the outboard unsafe or illegal to use.

EMU33740

Boating safety

This section includes a few of the many im­portant safety precautions that you should
follow 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 conditions.

EMU33731

People in the water

Always watch carefully for people in the wa­ter, such as swimmers, skiers, or divers,
whenever the engine is running. When
someone 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
locations 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
locations may result in being thrown either
overboard 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
capacity plate or boat manufacturer for max­imum weight and number of passengers. Be
sure that weight is properly distributed ac­cording to the boat manufacturers instruc­tions. Overloading or incorrect weight
distribution can compromise the boats han­dling and lead to an accident, capsizing or

2

Safety information

ZMU06025

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.

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 un­derstand 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 another direction.

EMU33790

Weather

Stay informed about the weather. Check
weather forecasts before boating. Avoid
boating 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.

3

General information

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 sto­len.

1. Outboard motor serial number location

1. Key number

EMU37291

EC Declaration of Conformity

(DoC)

This outboard motor conforms to certain por­tions of the European Parliament directive
relating to machinery.
Each conformed outboard motor accompa­nied with EC DoC.EC DoC contains the fol­lowing information;

 Name of Engine Manufacture
 Model name
 Product code of model (Approved model

code)

 Code of conformed directives

EMU25191

Key number

If a main key switch is equipped with the mo­tor, 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.

4

EMU25205

1

ZMU03473

ZMU06040

CE Marking

Outboard motors affixed with this “CE”mark­ing conform with the directives of; 98/37/EC,
94/25/EC - 2003/44/EC and 2004/108/EC.

1. CE marking location

General information

5

General information

ZMU06695

3

1

2

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.

115C, 130B

6

General information

WARNING

WARNING

WARNING

ZMU05706

1

2

3

EMU33912

Contents of labels

The above warning labels mean as follows.

1

EWM01691

Emergency starting does not have start­in-gear protection. Ensure shift control is
in neutral before starting engine.

2

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

EWM01671

 Read Owner’s Manuals and labels.
 Wear an approved personal flotation

device (PFD).

 Attach engine shut-off cord (lanyard) to

your PFD, arm, or leg so the engine
stops if you accidentally leave the
helm, which could prevent a runaway
boat.

7

General information

ZMU05696

ZMU05664

ZMU05665

ZMU05666

ZMU05667

ZMU05668

EMU33843

Symbols

The following symbols mean as follows.

Notice/Warning

Read Owner’s Manual

Electrical hazard

Remote control lever/gear shift lever operat­ing direction, dual direction

Engine start/ Engine cranking

Hazard caused by continuous rotation

8

Specifications and requirements

TIP:

EMU31480

Specifications

“(AL)” stated in the specification data below
represents the numerical value for the alumi­num propeller installed.
Likewise, “(SUS)” represents the value for
stainless steel propeller installed and “(PL)”
for plastic propeller installed.

EMU2821K

Dimension:

Overall length:

808 mm (31.8 in)

Overall width:

582 mm (22.9 in)

Overall height L:

1472 mm (58.0 in)

Overall height X:

1599 mm (63.0 in)

Transom height L:

516 mm (20.3 in)

Transom height X:

642 mm (25.3 in)

Weight (AL) L:

165.0 kg (364 lb)

Weight (AL) X:

169.0 kg (373 lb)

Weight (SUS) L:

167.0 kg (368 lb)

Weight (SUS) X:

171.0 kg (377 lb)

Performance:

Full throttle operating range:

115CETO 4500–5500 r/min

130BETO 5000–6000 r/min

Maximum output:

115CETO 84.6 kW@5000 r/min

(115 HP@5000 r/min)

130BETO 95.6 kW@5500 r/min

(130 HP@5500 r/min)

Idle speed (in neutral):

750 50 r/min

Engine:

Type:

2-stroke V

Displacement:

1730.0 cm

Bore  stroke:

90.0  68.0 mm (3.54  2.68 in)

Ignition system:

CDI

Spark plug with resistor (NGK):

115CETO BR8HS-10
130BETO BR9HS-10

Spark plug gap:

0.9–1.0 mm (0.035–0.039 in)

Control system:

Remote control

Starting system:

Electric starter

Starting carburetion system:

Choke valve

Min. cold cranking amps (CCA/EN):

430.0 A

Min. rated capacity (20HR/IEC):

70 Ah

Maximum generator output:

20 A

Drive unit:

Gear positions:

Forward-neutral-reverse

Gear ratio:

2.00 (26/13)

Trim and tilt system:

Power trim and tilt

Propeller mark:

K

Fuel and oil:

Recommended fuel:

Regular unleaded gasoline

Min. research octane:

3

9

Specifications and requirements

WARNING

WARNING

WARNING

115CETO 90

Fuel tank capacity:

24 L (6.34 US gal, 5.28 Imp.gal)

Recommended engine oil:

YAMALUBE 2-stroke outboard motor

oil

Recommended engine oil:

TC-W3

Lubrication:

Oil injection

Engine oil tank capacity:

0.9 L (0.95 US qt, 0.79 Imp.qt)

Remote oil tank capacity:

115CETO 10.5 L

(11.10 US qt, 9.24 Imp.qt)

115CETO 18.0 L

(19.03 US qt, 15.84 Imp.qt)

130BETO 18.0 L

(19.03 US qt, 15.84 Imp.qt)

Recommended gear oil:

Hypoid gear oil SAE#90

Gear oil quantity:

0.760 L (0.803 US qt, 0.669 Imp.qt)

Tightening torque for engine:

Spark plug:

25.0 Nm (2.55 kgf-m, 18.4 ft-lb)

Propeller nut:

55.0 Nm (5.61 kgf-m, 40.6 ft-lb)

Noise and vibration level:

Operator sound pressure level
(ICOMIA 39/94 and 40/94):

115CETO 82.9 dB(A)

EMU33554

Installation requirements

EMU33564

Boat horsepower rating

EWM01560

Overpowering a boat can cause severe
instability.

firm that the total horsepower of your out­board motor(s) does not exceed the boats
maximum horsepower rating. See the boat’s
capacity plate or contact the manufacturer.

EMU33571

Mounting motor

EWM01570

 Improper mounting of the outboard mo-

tor could result in hazardous condi­tions such as poor handling, loss of
control, or fire hazards.

 Because the motor is very heavy, spe-

cial equipment and training is required
to mount it safely.

Your dealer or other person experienced in
proper rigging should mount the motor using
correct equipment and complete rigging in­structions. For further information, see page

28.

EMU33581

Remote control requirements

EWM01580

 If the engine starts in gear, the boat can

move suddenly and unexpectedly, pos­sibly 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 dis­continue 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 un­less it is in neutral.

Before installing the outboard motor(s), con-

10

Specifications and requirements

ZMU04605

-

x

123

EMU25694

Battery requirements

EMU25721

Battery specifications

Minimum cold cranking amps (CCA/EN):

430.0 A

Minimum rated capacity (20HR/IEC):

70 Ah

The engine cannot be started if battery volt­age 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]

EMU36300

Multiple batteries

To connect multiple batteries, such as for
multiple engine configurations or for an ac­cessory battery, consult your Yamaha dealer
about battery selection and correct wiring.

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 a direct impact on acceleration,
top speed, fuel economy, and even engine
life. Yamaha designs and manufactures pro­pellers for every Yamaha outboard motor
and every application.
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
appropriate.

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 boat­load. 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 61.

1. Propeller diameter in inches

2. Propeller pitch in inches

3. Type of propeller (propeller mark)

11

Specifications and requirements

NOTICE

ZMU04606

-

x

123

ZMU04608

-

x

123

EMU25651

Engine oil requirements

Recommended engine oil:

YAMALUBE 2-stroke outboard motor
oil

If the recommended engine oil is not avail­able, another 2-stroke engine oil with an
NMMA-certified TC-W3 rating may be used.

EMU36360

1. Propeller diameter in inches

2. Propeller pitch in inches

3. Type of propeller (propeller mark)

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.

Fuel requirements

Recommended gasoline:

Regular unleaded gasoline with a min­imum octane rating of 90 (Research
Octane Number).

1. Propeller diameter in inches

2. Propeller pitch in inches

3. Type of propeller (propeller mark)

EMU25770

Start-in-gear protection

Yamaha outboard motors or Yamaha-ap­proved 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
before starting the engine.

12

ECM01981

 Do not use leaded gasoline. Leaded

gasoline can seriously damage the en­gine.

 Avoid getting water and contaminants

in the fuel tank. Contaminated fuel can
cause poor performance or engine
damage. Use only fresh gasoline that
has been stored in clean containers.

Gasohol

There are two types of gasohol: gasohol con­taining 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

Specifications and requirements

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 water­separating marine fuel filter assembly (10 mi­cron minimum) between your boat’s fuel tank
and outboard motor when using ethanol.
Ethanol is known to allow moisture to be ab­sorbed into boat fuel tanks and systems.
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 chromium­plated 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.

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 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.

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, pli-

ers, 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.

13

Components

TIP:

WARNING

13

14

15 16 17

18 19

4

7

1

2

3

5

6

8

9

10

12

11

ZMU07565

EMU2579Y

Components diagram

* May not be exactly as shown; also may not be included as standard equipment on all mod­els (order from dealer).

115C, 130B

1. Top cowling

2. Power trim and tilt switch

3. Flushing device*

4. Tilt support lever

5. Anti-cavitation plate

6. Trim tab (anode)

7. Propeller*

8. Cooling water inlet

9. Anode

10. Clamp bracket

11. Top cowling release lever

12. Choke knob

13. Cooling water pilot hole

14. Remote control box (side mount type)*

15. Digital tachometer

14

16. Digital speedometer

17. Fuel tank*

18. Remote oil tank
[10.5 L (11.10 US qt, 9.24 Imp.qt)]*

19. Remote oil tank
[18.0 L (19.03 US qt, 15.84 Imp.qt)]*

EMU25802

Fuel tank

If your model was equipped with a portable
fuel tank, its function is as follows.

EWM00020

The fuel tank supplied with this engine is
its dedicated fuel reservoir and must not

be used as a fuel storage container. Com-

ZMU02284

3

1

4

2

mercial users should conform to relevant
licensing or approval authority regula­tions.

1. Fuel joint

2. Fuel gauge

3. Fuel tank cap

4. Air vent screw

EMU25830

Fuel joint

This joint is used to connect the fuel line.

EMU25841

Fuel gauge

This gauge is located on either the fuel tank
cap or on the fuel joint base. It shows the ap­proximate amount of fuel remaining in the
tank.

EMU25850

Fuel tank cap

This cap seals the fuel tank. When removed,
the tank can be filled with fuel. To remove the
cap, turn it counterclockwise.

EMU25860

Air vent screw

This screw is on the fuel tank cap. To loosen
the screw, turn it counterclockwise.

EMU26181

Remote control box

The remote control lever actuates both the
shifter and the throttle. The electrical switch­es are mounted on the remote control box.

Components

1. Power trim and tilt switch

2. Remote control lever

3. Neutral interlock trigger

4. Neutral throttle lever

5. Main switch / choke switch

6. Engine shut-off switch

7. Throttle friction adjuster

EMU26190

Remote control lever

Moving the lever forward from the neutral po­sition engages forward gear. Pulling the le­ver back from neutral engages reverse. The
engine will continue to run at idle until the le­ver is moved about 35 (a detent can be felt).
Moving the lever farther opens the throttle,
and the engine will begin to accelerate.

15

Components

TIP:

ZMU03160

1. Neutral “ ”

2. Forward “ ”

3. Reverse “ ”

4. Shift

5. Fully closed

6. Throttle

7. Fully open

EMU26201

Neutral interlock trigger

To shift out of neutral, first pull the neutral in­terlock trigger up.

1. Neutral interlock trigger

EMU26212

Neutral throttle lever

To open the throttle without shifting into ei­ther forward or reverse, put the remote con­trol lever in the neutral position and lift the
neutral throttle lever.

1. Fully open

2. Fully closed

The neutral throttle lever will operate only
when the remote control lever is in neutral.
The remote control lever will operate only
when the neutral throttle lever is in the closed
position.

EMU26221

Choke switch

To activate the choke system, press in the
main switch while the key is turned to the
“ ” (on) or “ ” (start) position. The
choke system will then supply the rich fuel
mixture required to start the engine. When
the key is released, the choke will switch off
automatically.

16

Components

ZMU03903

EMU25976

Throttle friction adjuster

A friction device provides adjustable resis­tance to movement of the throttle grip or the
remote control lever, and can be set accord­ing to operator preference.
To increase resistance, turn the adjuster
clockwise. To decrease resistance, turn the
adjuster counterclockwise. WARNING! Do

not overtighten the friction adjuster. If
there is too much resistance, it could be
difficult to move the remote control lever
or throttle grip, which could result in an
accident.

[EWM00032]

When constant speed is desired, tighten the
adjuster to maintain the desired throttle set­ting.

EMU25995

Engine shut-off cord (lanyard) and
clip

The clip must be attached to the engine shut­off switch for the engine to run. The cord
should be attached to a secure place on the
operator’s clothing, or arm or leg. Should the
operator fall overboard or leave the helm, the
cord will pull out the clip, stopping ignition to
the engine. This will prevent the boat from
running away under power. WARNING! At-

tach the engine shut-off cord to a secure
place on your clothing, or your arm or leg
while operating. Do not attach the cord to

clothing that could tear loose. Do not
route the cord where it could become en­tangled, preventing it from functioning.
Avoid accidentally pulling the cord dur­ing normal operation. Loss of engine
power means the loss of most steering
control. Also, without engine power, the
boat could slow rapidly. This could cause
people and objects in the boat to be
thrown forward.

1. Cord

2. Clip

3. Engine shut-off switch

EMU26013

[EWM00122]

Choke knob for pull type

To supply the engine with the rich fuel mix­ture required to start, pull out this knob.

17

Components

WARNING

EMU26091

Main switch

The main switch controls the ignition system;
its operation is described below.

 “” (off)

With the main switch in the “ ” (off) posi­tion, the electrical circuits are off, and the key
can be removed.

 “” (on)

With the main switch in the “ ” (on) posi­tion, the electrical circuits are on, and the key
cannot be removed.

 “” (start)

With the main switch in the “ ” (start) po­sition, the starter motor turns to start the en­gine. When the key is released, it returns
automatically to the “ ” (on) position.

EMU26155

Power trim and tilt switch on bottom
cowling

The power trim and tilt switch is located on
the side of the bottom cowling. Pushing the
switch “ ” (up) trims the outboard motor up,
and then tilts it up. Pushing the switch “ ”
(down) tilts the outboard motor down and
trims it down. When the switch is released,
the outboard motor will stop in its current po­sition.
For instructions on using the power trim and
tilt switch, see page 47.

EWM01031

EMU32053

Power trim and tilt switch on remote
control

The power trim and tilt system adjusts the
outboard motor angle in relation to the tran­som. Pushing the switch “ ” (up) trims the
outboard motor up, and then tilts it up. Push­ing the switch “ ” (down) tilts the outboard
motor down and trims it down. When the
switch is released, the outboard motor will
stop in its current position. For instructions
on using the power trim and tilt switch, see
pages 44 and 47.

18

Use the power trim and tilt switch located
on the bottom cowling only when the boat
is at a complete stop with the engine off.
Attempting to use this switch while the
boat is moving could increase the risk of
falling overboard and could distract the
operator, increasing the risk of collision
with another boat or an obstacle.

Components

WARNING

NOTICE

UP

DN

ZMU03517

1

2

3

ZMU02525

A

B

A

B

ZMU01863

EMU26244

Trim tab with anode

EWM00840

An improperly adjusted trim tab could
cause difficult steering. Always test run
after the trim tab has been installed or re­placed to be sure steering is correct. Be
sure you have tightened the bolt after ad­justing the trim tab.

The trim tab should be adjusted so that the
steering control can be turned to either the
right or left by applying the same amount of
force.
If the boat tends to veer to the left (port side),
turn the trim tab rear end to the port side “A”
in the figure. If the boat tends to veer to the
right (starboard side), turn the trim tab end to
the starboard side “B” in the figure.

ECM00840

The trim tab also serves as an anode to
protect the engine from electrochemical
corrosion. Never paint the trim tab as it
will become ineffective as an anode.

1. Trim tab

2. Bolt

3. Cap

Bolt tightening torque:

43.0 Nm (4.3 kgf-m, 32 ft-lb)

EMU26341

Tilt support lever for power trim and
tilt model

To keep the outboard motor in the tilted up
position, lock the tilt support lever to the
clamp bracket.

19