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
TIP:
TIP:
EMU25108
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.
EWM00782
A WARNING indicates a hazardous situation which, if not avoided, could result in
death or serious injury.
ECM00702
A NOTICE indicates special precautions
that must be taken to avoid damage to the
outboard motor or other property.
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 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 F115B, LF115B, F130A 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.
EMU25123
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
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.
EMU40272
Rotating parts
Hands, feet, hair, jewelry, clothing, personal
flotation device (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 top cowling with the engine running.
Only operate the engine with the top 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.
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 engine has cooled.
EMU33651
Electric shock
Do not touch any electrical parts while starting or operating the engine. They can cause
shock or electrocution.
EMU33662
Power trim and tilt
Body parts can be crushed between the motor 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
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.
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 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.
1
Safety information
EMU33811
Gasoline
Gasoline and its vapors are highly flammable and explosive. Always, refuel according
to the procedure on page 54 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, 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.
EMU33901
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.
EMU33781
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.
EMU33742
Boating safety
This section includes a few of the many important 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 common 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 minimum, children and non-swimmers should
always wear PFDs, and everyone should
wear PFDs when there are potentially hazardous boating conditions.
EMU33732
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.
EMU33752
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 prop-
2
Safety information
ZMU06025
erly, alert your passengers if you must make
any unusual maneuver. Always avoid jumping waves or wakes.
EMU33763
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 manufacturer’s instructions. Overloading or incorrect weight
distribution can compromise the boat’s handling and lead to an accident, capsizing or
swamping.
EMU33773
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.
EMU48100
Collisions with floating or submerged
objects
If the outboard motor hits a floating object or
an obstacle in the water while cruising, the
following could occur:
The passengers and any loose equipment
or luggage could be thrown forward due to
the sudden deceleration.
Parts of the outboard motor could come
loose as a result of the impact and could be
thrown into the boat.
The boat or outboard motor could be dam-
aged as a result of the impact.
When you operate the boat in an area where
there might be floating objects or obstacles in
the water, be sure to adjust the trim angle of
the outboard motor, slow down, and operate
carefully. For further information, see page
68.
If the outboard motor hits a floating object or
an obstacle in the water, make sure that there
are no abnormalities with the boat and the
outboard motor. If anything abnormal is
found, return to the nearest harbor at low
speed and have a Yamaha dealer inspect the
outboard motor.
3
Safety information
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.
4
General information
1
3412
ZMU01692
1
ZMU01694
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 stolen.
1. Outboard motor serial number location
1. Serial number
2. Model name
3. Motor transom height
4. Engine code
EMU25192
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.
1. Key number
EMU38984
EC Declaration of Conformity
(DoC)
This declaration is included with outboard
motors that conform to European regulations.
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;
Manufacturer
Model name
Engine code
Applied directives
EMU48442
CE Marking / UKCA Marking
This label is affixed to outboard motors that
conform to European regulations.
5
General information
1
6EE-43394-90
15210026
1
ZMU08190
1
ZMU08191
1
1. CE marking location
CE marking
Outboard motors affixed with this “CE” marking conform with the directives of;
2006/42/EC, 2014/30/EU, and 2013/53/EU.
UKCA marking
This product is in compliance with the Recreational Craft Regulations 2017, Electromagnetic Compatibility Regulations 2016 and
Supply of Machinery (Safety) Regulations
2008.
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.
1. Compliance mark label location
Regulatory Compliance Mark (RCM)
Engines affixed with this mark conform to
certain portion(s) of the Australian Radio
Communications Act.
1. Regulatory Compliance Mark (RCM)
ICES-002 Compliance Label
Engines affixed with this mark meet all requirements of the Canadian Interference
Causing Equipment Regulations.
1. ICES-002 Compliance Label
6
General information
1
3
2
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.
7
General information
6EE-G2794-40
6EE-H1994-40
1
2
6EE-G2794-50
6EE-H1994-50
3
EMU34652
Contents of labels
The above warning labels mean as follows.
1
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
EWM01672
Read Owner’s Manuals and labels.
Wear an approved personal flotation de-
This model’s ECM stores certain engine data
to assist in the diagnosis of malfunctions and
for research, statistical analysis and development purposes.
Although the sensors and recorded data will
vary by model, the main data points are:
Engine status and engine performance
data
This data will be uploaded only when a special Yamaha diagnostic tool is attached to the
engine, such as when maintenance checks or
service procedures are performed. Engine
data uploaded will be handled appropriately
according to the following Privacy Policy.
Privacy Policy
Yamaha will not disclose this data to a third
party except in the following cases. In addition, Yamaha may provide engine data to a
contractor in order to outsource services related to the handling of the engine data. Even
in this case, Yamaha will require the contractor to properly handle the engine data we
provided and Yamaha will appropriately
manage the data.
With the consent of the boat owner
Where obligated by law
9
General information
For use by Yamaha in litigation
For general Yamaha-conducted research
purposes when the data is not related to an
individual engine or owner
10
Specifications and requirements
TIP:
EMU40501
Specifications
“(SUS)” indicates that the specification is for
the outboard motor when it is equipped with
a stainless steel propeller.
EMU48360
Dimension and weight:
Overall length:
826 mm (32.5 in)
Overall width:
524 mm (20.6 in)
Overall height L:
1629 mm (64.1 in) (F115B, F130A)
Overall height X:
1756 mm (69.1 in)
Motor transom height L:
516 mm (20.3 in) (F115B, F130A)
Motor transom height X:
643 mm (25.3 in)
Dry weight (SUS) L:
175 kg (386 lb) (F115B)
176 kg (388 lb) (F130A)
Dry weight (SUS) X:
179 kg (395 lb) (F115B, LF115B)
180 kg (397 lb) (F130A)
Performance:
Full throttle operating range:
5300–6300 r/min
Rated power:
84.6 kW (115 HP) (F115B, LF115B)
95.6 kW (130 HP) (F130A)
Idle speed (in neutral):
700–800 r/min
Power unit:
Type:
4-stroke DOHC L4 16 valves
Total displacement:
1832 cm³ (111.8 c.i.)
Bore × stroke:
81.0 × 88.9 mm (3.19 × 3.50 in)
Ignition system:
TCI
Spark plug (NGK):
LKR6E
Spark plug gap:
0.8–0.9 mm (0.031–0.035 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):
430–1080 A
Battery rating (20HR/IEC):
70 Ah
Maximum generator output:
35 A
Lower unit:
Gear shift positions:
Forward-neutral-reverse
Gear ratio:
2.15 (28/13)
Trim and tilt system:
Power trim and tilt
Propeller mark:
K/K2 (F115B, F130A)
KL (LF115B)
Fuel and oil:
Recommended fuel:
Regular unleaded gasoline
Min. research octane number (RON):
90
11
Specifications and requirements
Recommended engine oil:
YAMALUBE 4 or 4-stroke outboard
motor oil
Recommended engine oil grade 1:
SAE 10W-30/10W-40/5W-30
API SG/SH/SJ/SL
Engine oil quantity (without oil filter
replacement):
3.0 L (3.17 US qt, 2.64 Imp.qt)
Engine oil quantity (with oil filter
replacement):
3.2 L (3.38 US qt, 2.82 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:
0.715 L (0.756 US qt, 0.629 Imp.qt)
(LF115B)
0.760 L (0.803 US qt, 0.669 Imp.qt)
(F115B, F130A)
Noise and vibration level:
Operator sound pressure level (ICOMIA
39/94):
83.6 dB(A)
EMU33556
Installation requirements
Before installing the outboard motor(s), confirm that the total horsepower of your outboard motor(s) does not exceed the boat’s
maximum horsepower rating. See the boat’s
capacity plate or contact the manufacturer.
EMU40491
Mounting outboard motor
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 47.
EMU33582
Remote control requirements
EWM01581
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.
EMU33566
Boat horsepower rating
EWM01561
Overpowering a boat can cause severe instability.
12
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.
Specifications and requirements
3
1
2
-
x
123
A
AB
A
B
EMU25695
Battery requirements
EMU25723
Battery specifications
Battery rating (CCA/EN):
430–1080 A
Battery rating (20HR/IEC):
70 Ah
The engine cannot be started if battery voltage 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 battery cable size and length.
EMU41604
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 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 suitable for the “Shift Dampener System (SDS)”.
For further information, consult your Yamaha
dealer.
To check the propeller, see page 86.
Propeller example
1. Propeller diameter in inches
2. Propeller pitch in inches
3. Type of propeller (propeller mark)
EMU36313
Counter rotation models
Standard outboard motors rotate clockwise.
Counter rotation models rotate counterclockwise and are typically used in multiple motor
setups.
On counter rotation models, be sure to use a
propeller intended for counterclockwise rotation. These propellers are identified with the
13
Specifications and requirements
ZMU08143
122˚F
50˚C
104
40
86
30
68
SAEAPI
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
SAEAPI
SH
SJ
SL
20
50
10
32
0
14
-10
-4
-20
15W–40
20W–40
20W–50
letter “L” after the size indication on the propeller. WARNING! Never use a standard
propeller with a counter rotation motor, or
a counter rotation propeller with a standard 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 installation, see page 87.
EMU25771
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.
EMU41953
Engine oil requirements
Select an oil grade according to the average
temperatures in the area where the outboard
motor will be used.
3.0 L (3.17 US qt, 2.64 Imp.qt)
Engine oil quantity (with oil filter replacement):
3.2 L (3.38 US qt, 2.82 Imp.qt)
Recommended engine oil grade 1
Recommended engine oil grade 2
EMU36361
Fuel requirements
EMU40203
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.
Recommended fuel:
Regular unleaded gasoline
Min. research octane number (RON):
90
ECM01982
If oil grades listed under Recommended engine oil grade 1 are not available, select an alternative oil grade listed under
Recommended engine oil grade 2.
14
Do not use leaded gasoline. Leaded
gasoline can seriously damage the engine.
Specifications and requirements
TIP:
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.
E5E10
This mark identifies the recommended fuel
for this outboard motor as specified by European regulation (EN228).
Check that gasoline nozzle has the same
identifier when fueling.
Gasohol
There are two types of gasohol: gasohol containing ethanol (E5 and E10) and that containing methanol. Ethanol can be used if the
ethanol content does not exceed 10% and
the fuel meets the minimum octane ratings.
E85 is a fuel containing 85% ethanol and
must not be used in your outboard motor. All
ethanol blends containing more than 10%
ethanol can cause fuel system damage or
cause engine starting and running problems.
Yamaha does not recommend gasohol containing methanol because it can cause fuel
system damage or engine performance problems.
It is recommended that you install a 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 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 additional fuel system maintenance.
EMU36881
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.
EMU36331
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.
EMU40302
Outboard motor disposal re-
quirements
Never illegally discard (dump) the outboard
motor. Yamaha recommends consulting the
dealer about discarding the outboard motor.
15
Specifications and requirements
1
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
EPA/CA FEL : HC+NOx ,CO g/kW-h
EPA CERTIFIED EVAP COMPONENTS :
YAMAHA MOTOR CO.,LTD.
ZMU06894
1
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 marine SI engines. See the label affixed to your
engine for details.
EMU31563
Approval label of emission control certificate
This label is attached at the location shown.
New Technology; (4-stroke) MFI
1. Approval label location
EMU25275
Star labels
Your outboard motor is labeled with a California 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 meeting these standards have 75% lower emissions than conventional carbureted twostroke engines. These engines are equivalent
to the U.S. EPA’s 2006 standards for marine
engines.
1. Star label location
16
Specifications and requirements
ZMU01702
ZMU01703
ZMU01704
ZMU05663
EMU40341
Two Stars—Very Low Emission
The two-star label identifies engines that
meet the Air Resources Board’s Personal
Watercraft and Outboard marine engine 2004
exhaust emission standards. Engines meeting these standards have 20% lower emissions than One Star-Low-Emission engines.
EMU40351
Three Stars—Ultra Low Emission
The three-star label identifies engines that
meet the Air Resources Board’s Personal
Watercraft and Outboard marine engine 2008
exhaust emission standards or the Sterndrive
and Inboard marine engine 2003-2008 exhaust emission standards. Engines meeting
these standards have 65% lower emissions
than One Star-Low-Emission engines.
EMU33862
Four Stars—Super Ultra Low Emission
The four-star label identifies engines that
meet the Air Resources Board’s Sterndrive
and Inboard marine engine 2009 exhaust
emission standards. Personal Watercraft and
Outboard marine engines may also comply
with these standards. Engines meeting these
standards have 90% lower emissions than
One Star-Low-Emission engines.
17
Components
TIP:
1
2
3
4
5
6
10
11
12
F115, LF115
F130
12
8
9
7
EMU46722
Components diagram
* May not be exactly as shown; also may not be included as standard equipment on all models
(order from dealer).
1. Top cowling
2. Cowling lock lever
3. Power trim and tilt unit
4. Clamp bracket
5. Anode
6. Cooling water inlet
7. Propeller*
8. Trim tab (anode)
9. Anti-cavitation plate
10.Flushing device
11.Power trim and tilt switch
12.Fuse box
18
Components
7
1
2
3
4
5
8
9
6
1. Oil filler cap
2. Cowling lock lever
3. Fuel filter
4. Cooling water pilot hole
5. Drain screw
6. Gear oil drain screw
7. Cooling water inlet
8. Oil level plug
9. Oil dipstick
19
Components
TRIP TIME BATT
Km/h
knot
mph
km
mile
SPEED
YAMAHA
set
mode
SET MODE
SET MODE
6
2451
3
10987
111312
EMU46733
Optional items
The following items are available from your Yamaha dealer. For details, consult your Yamaha
dealer.
1. Remote control box (side mount type)
2. Remote control box (binnacle mount type)
3. Remote control box (binnacle mount type)
4. Switch panel (for use with binnacle type)
5. Switch panel (for use with binnacle type)
6. Digital tachometer
7. Digital speedometer
8. Fuel management meter
9. 6Y8 Multifunction tachometer
10.6Y8 Multifunction speed & fuel meter
11.CL5 Display
12.Yamaha Security System (Y-COP)
20
13.Tiller handle
EMU46753
Yamaha Security System (Y-COP/Optional)
ECM02461
The Yamaha Security System is sold in
conformity with the relevant laws and regulations regarding radio wave transmission. Therefore, if this product is used
outside the country where it was sold, it
may violate the laws or regulations re-
12
1
2
3
5
4
6
7
ZMU01723
2
3
2
1
4
ZMU04569
garding radio wave transmission in the
country it is used in. For details, consult
your Yamaha dealer.
The Yamaha Security System, which protects against theft, consists of the receiver
and key fobs. The Yamaha Security System
is available from your Yamaha dealer. For details, consult your Yamaha dealer.
1. Key fob
2. Receiver
The engine cannot be started if the security
system is in the lock mode. The engine can
be started only in the unlock mode. For more
information, see the installation and owner’s
manual included with the security system.
EMU26182
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
6. Engine shut-off switch
7. Throttle friction adjuster
1. Remote control lever
2. Power trim and tilt switch
3. Free accelerator
4. Throttle friction adjuster
EMU26191
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.
21
Components
TIP:
1
23
44
5
5
6
6
7
7
F
N
R
ZMU01725
N
1
F
7
6
2
R
3
4
4
6
5
7
5
1
2
N
ZMU01728
1. Neutral “ ”
2. Forward “ ”
3. Reverse “ ”
4. Shift
5. Fully closed
6. Throttle
7. Fully open
1
ZMU01727
1. Neutral interlock trigger
EMU26213
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. Neutral “ ”
2. Forward “ ”
3. Reverse “ ”
4. Shift
5. Fully closed
6. Throttle
7. Fully open
EMU26202
Neutral interlock trigger
To shift out of neutral, first pull the neutral interlock trigger up.
22
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.
EMU26234
Free accelerator
To open the throttle without shifting into either forward or reverse, push the free accelerator button and move the remote control
lever.
TIP:
1. Fully open
1
3
2
ZMU04575
22
1
3
2
1
3
2. Fully closed
3. Free accelerator
Components
EMU25925
Gear shift lever
Move the gear shift lever forward to engage
the forward gear or rearward to engage the
reverse gear.
The free accelerator button can only be
pushed when the remote control lever is in
the neutral position.
After the button is pushed, the throttle be-
gins to open after the remote control lever
is moved at least 35°.
After using the free accelerator, return the
remote control lever to the neutral position.
The free accelerator button will return automatically to its set position. The remote
control will then engage forward and reverse normally.
EMU25914
Tiller handle
To change direction, move the tiller handle to
the left or right as necessary.
1. Forward “ ”
2. Neutral “ ”
3. Reverse “ ”
EMU25943
Throttle grip
The throttle grip is on the tiller handle. Turn
the grip counterclockwise to increase speed
and clockwise to decrease speed.
EMU25963
Throttle indicator
The fuel consumption curve on the throttle indicator shows the relative amount of fuel consumed for each throttle position. Choose the
setting that offers the best performance and
fuel economy for the desired operation.
23
Components
111
ZMU01714
ZMU04646
1. Throttle indicator
EMU25978
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.
[EWM00033]
When constant speed is desired, tighten the
adjuster to maintain the desired throttle setting.
EMU25996
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
24
means the loss of most steering control.
ZMU01716
1
2
3
1
2
3
ON
STARTOFF
ON
STARTOFF
1
2
3
ZMU05818
2
3
Also, without engine power, the boat
could slow rapidly. This could cause people and objects in the boat to be thrown
forward.
1. Engine shut-off cord (lanyard)
2. Clip
3. Engine shut-off switch
[EWM00123]
Components
1. Engine shut-off cord (lanyard)
2. Clip
3. Engine shut-off switch
3
2
111
1. Engine shut-off cord (lanyard)
2. Clip
3. Engine shut-off switch
1. Engine shut-off cord (lanyard)
2. Clip
3. Engine shut-off switch
EMU26004
Engine stop button
The engine stop button stops the engine
when the button is pushed.
25
Components
ON
STARTOFF
ZMU01718
ON
OFF
START
ZMU04567
ON
OFF
START
ON
OFF
START
ZMU05821
EMU26092
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.
EMU26113
Steering friction adjuster
A friction device provides adjustable resistance to the steering mechanism, and can be
set according to operator preference. An adjuster lever is located on the bottom of the tiller handle bracket.
To increase resistance, turn the lever to the
port side “A”.
To decrease resistance, turn the lever to the
starboard side “B”.
EWM00041
26
Do not overtighten the friction adjuster. If
there is too much resistance, it could be
difficult to steer, which could result in an
accident.
TIP:
Check the tiller handle for smooth move-
DN
UP
ZMU01720
ment when the lever is turned to the starboard side “B”.
Do not apply lubricants such as grease to
the friction areas of the steering friction adjuster.
EMU26144
Power trim and tilt switch on remote
control or tiller handle
The power trim and tilt system adjusts the
outboard motor angle in relation to the transom. Pressing the switch “ ” (up) trims the
outboard motor up, and then tilts it up. Pressing 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 63 and 65.
Components
EMU26156
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 65.
EWM01032
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.
27
Components
TIP:
TIP:
1
UP
DN
ZMU04601
DN
UP
1
11
1. Power trim and tilt switch
EMU26164
Power trim and tilt switches (twin binnacle type)
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. Pressing 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 switches, see
pages 63 and 65.
EMU30903
Variable trolling RPM switches
The trolling speed can be adjusted when the
outboard motor is trolling. Press the “ ”
switch to increase the trolling speed and
press the “ ” switch to decrease the trolling
speed.
1. Variable trolling RPM switch
The trolling speed changes approximately
50 r/min each time a switch is pressed.
If the trolling speed has been adjusted, the
engine returns to the normal trolling speed
when the engine is stopped and restarted
or when the engine speed exceeds approximately 3000 r/min.
For instructions on using the variable troll-
ing RPM switches, see page 61.
1. Power trim and tilt switch
On the dual engine control, the switch on the
remote control grip controls both outboard
motors at the same time.
28
EMU26246
Trim tab with anode
EWM00841
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.
Components
3
2
1
A
B
ZMU08077
1
1
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.
ECM00841
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. Cap
2. Bolt
3. Trim tab
EMU26342
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.
1. Tilt support lever
ECM00661
Do not use the tilt support lever or knob
when trailering the boat. The outboard
motor could shake loose from the tilt support and fall. If the motor cannot be
trailered in the normal running position,
use an additional support device to secure
it in the tilt position.
EMU40762
Cowling lock lever
The cowling lock levers are used to secure
the top cowling.
Bolt tightening torque:
42 N·m (4.2 kgf·m, 31 lb·ft)
1. Cowling lock lever
29
Components
1
1
1
1
1. Cowling lock lever
EMU40803
Flushing device
The flushing device is used to clean the cooling water passages of the outboard motor
using a garden hose and tap water. For instructions on using the flushing device, see
page 72.
1. Flushing device
EMU41312
Fuel filter
The fuel filter functions to remove foreign material and separate water from the fuel. If water separated from the fuel exceeds a specific
volume, the alert system will activate. For further information, see page 45.
1. Fuel filter
EMU26305
Alert indicator
If the engine develops a condition which is
cause for alert, the indicator lights up. For details on how to read the alert indicator, see
page 43.
1. Alert indicator
30
Instruments and indicators
1
1
1
5
2
4
3
6
7
EMU36016
Indicators
EMU36026
Low oil pressure-alert indicator
If oil pressure drops too low, this indicator will
light up. For further information, see page 43.
ECM00024
Do not continue to run the engine if the
low oil pressure-alert indicator is on and
the engine oil level is lower. Serious engine damage will occur.
The low oil pressure-alert indicator does
not indicate the engine oil level. Use the
oil dipstick to check the oil level. For further information, see page 51.
1. Overheat-alert indicator
EMU41391
Digital tachometer
The tachometer shows the engine speed and
has the following functions.
All segments of the display will light momentarily after the main switch is turned on and
will return to normal thereafter.
1. Low oil pressure-alert indicator
EMU36034
Overheat-alert indicator
If the engine temperature rises too high, this
indicator will light up. For further information
on reading the indicator, see page 43.
ECM00053
Do not continue to run the engine if the
overheat-alert indicator is on. Serious engine damage will occur.
1. Tachometer
2. Trim meter
3. Hour meter
4. Low oil pressure-alert indicator
5. Overheat-alert indicator
6. Set button
7. Mode button
EMU36051
Tachometer
The tachometer displays engine speed in
hundreds of revolutions per minute (r/min).
For example, if the tachometer display reads
“22” then the engine speed is 2200 r/min.
31
Instruments and indicators
ZMU01740
ZMU01741
ZMU01736
1
EMU26622
Trim meter
This meter shows the trim angle of your outboard motor.
Memorize the trim angles that work best for
your boat under different conditions. Adjust the trim angle to the desired using the
power trim and tilt switch.
If the trim angle of your motor exceeds the
trim operating range, the top segment on
the trim meter display will blink.
EMU26652
Hour meter
This meter shows the number of hours the
engine has been run. It can be set to show the
total number of hours or the number of hours
for the current trip. The display can also be
turned on and off.
To reset the trip hours, simultaneously press
the “” (set) and “” (mode) buttons for
more than 1 second while the trip hours are
displayed. This resets the trip counter to 0
(zero).
The total number of hours the engine has
been run cannot be reset.
EMU26526
Low oil pressure-alert indicator
If oil pressure drops too low, the alert indicator will start to blink. For further information,
see page 43.
ECM00024
Do not continue to run the engine if the
low oil pressure-alert indicator is on and
the engine oil level is lower. Serious engine damage will occur.
The low oil pressure-alert indicator does
not indicate the engine oil level. Use the
oil dipstick to check the oil level. For further information, see page 51.
To change the display format, press the
“” (mode) button. The display can show
total hours or trip hours, or turn off.
32
1. Low oil pressure-alert indicator
EMU26584
Overheat-alert indicator
If the engine temperature rises too high, the
alert indicator will start to blink. For further information on reading the indicator, see page
43.
Instruments and indicators
ZMU01737
1
TRIP TIME BATT
km/h
knot
mph
km
mile
SPEED
YAMAHA
set
mode
1
2
4
3
ZMU07002
ECM00053
Do not continue to run the engine if the
overheat-alert indicator is on. Serious engine damage will occur.
1. Overheat-alert indicator
EMU26603
Digital speedometer
This gauge shows the boat speed and other
information.
EMU36062
Speedometer
The speedometer displays km/h, mph, or
knots, according to operator preference. Select the desired units of measurement by setting the selector switch on the back of the
gauge. See the illustration for settings.
1
2
km/h
(km)
mph
(mile)
knots
(mile)
1. Cap
2. Selector switch (for speed unit)
3. Selector switch (for fuel sensor)
EMU26714
Fuel gauge
Eight segments indicate the fuel level. When
all segments are showing, the fuel tank is full.
1234
3
ZMU07001
1. Speedometer
2. Fuel gauge
3. Trip meter/clock/voltmeter
4. Alert indicator(s)
All segments of the display will light momentarily after the main switch is turned on and
will return to normal thereafter.
The fuel level reading can be inaccurate due
to the position of the sensor in the fuel tank
and the attitude of the boat in the water. Operation with bow-up trim or continuous turning can give false readings.
Do not adjust the selector switch for fuel sensor. Incorrectly setting the selector switch on
the gauge will give false readings. Consult
33
Instruments and indicators
TRIP TIME BATT
km/h
knot
mph
km
mile
SPEED
YAMAHA
set
mode
ZMU07003
TRIP TIME BATT
km/h
knot
mph
km
mile
SPEED
YAMAHA
set
mode
ZMU07004
your Yamaha dealer on how to correctly set
the selector switch. NOTICE: Running out of
fuel can damage the engine.
EMU36072
[ECM01771]
Trip meter / Clock / Voltmeter
The display shows either the trip meter, the
clock, or the voltmeter.
To change the display, press the “” (mode) button repeatedly until the indicator on
the face of the gauge points to “” (trip
meter), “” (clock), or “” (voltmeter).
EMU26692
Trip meter
This gauge displays the distance the boat has
traveled since the gauge was last reset.
The trip distance is shown in kilometers or
miles depending upon the unit of measurement selected for the speedometer.
To reset the trip meter to zero, press the “”
(set) and “” (mode) buttons at the same
time.
The trip distance is kept in memory by battery
power. The stored data will be lost if the battery is disconnected.
(3) Press the “” (mode) button until the
desired hour is displayed.
(4) Press the “” (set) button again, the mi-
nute display will begin blinking.
(5) Press the “” (mode) button until the
desired minute is displayed.
(6) Press the “” (set) button again to start
the clock.
The clock operates on battery power. Disconnecting the battery will stop the clock.
Reset the clock after connecting the battery.
EMU36081
Voltmeter
The voltmeter displays the charge of the battery in volts(V).
EMU26702
Clock
To set the clock:
(1) Be sure the gauge is in the “” (time)
mode.
(2) Press the “” (set) button; the hour dis-
34
play will begin blinking.
EMU26723
Fuel level-alert indicator
If the fuel level decreases to one segment, the
fuel level alert segment will blink.
Do not continue to operate the engine at full
throttle if an alert device has activated. Get
back to the port using trolling engine speed.
NOTICE: Running out of fuel can damage
the engine.
[ECM01771]
Instruments and indicators
TRIP TIME BATT
km/h
knot
mph
km
mile
SPEED
YAMAHA
set
mode
1
TRIP TIME BATT
km/h
knot
mph
km
mile
SPEED
YAMAHA
set
mode
ZMU07006
1
ZMU01748
1
2
3
111
1. Fuel level-alert segment
EMU26733
Low battery voltage-alert indicator
If battery voltage drops, the display will automatically turn on and blink.
Get back to the port soon if an alert device
has activated. For charging the battery, consult your Yamaha dealer.
1. Low battery indicator
EMU26742
Fuel management meter
The fuel management meter shows the state
of the fuel consumption while the engine is
running.
1. Fuel flow meter
2. Fuel consumption meter / Fuel economy
meter / Twin engine speed synchronizer
3. Water separator-alert indicator (operates
only if the sensor has been installed)
All segments of the display will light momentarily after the main switch is turned on and
will return to normal thereafter.
EMU26753
Fuel flow meter
The fuel flow meter displays the amount of
fuel flow over a one-hour period, at the current rate of engine operation.
The fuel flow meter displays gallons/hour
or liters/hour according to operator preference. Select the desired units of measurement by setting the selector switch on the
back of the gauge during installation.
1. Selector switch
The fuel consumption meter and fuel econ-
omy meter will indicate the same unit of
measurement.
35
Instruments and indicators
ZMU01749
ZMU01751
ZMU01752
Fuel flow readings are not accurate when the
engine is operating under about 1300 r/min.
As the fuel pump cycles on and off, the display indicates either no fuel flow or higher
flow than the actual average use.
Dual engine users: the fuel flow meter can
display the fuel flow of either or both engines.
To change the fuel flow display, press the
“” (set) button repeatedly until the gauge
displays “ ” (for fuel flow to the starboard engine only), “ ” (for fuel flow to the port engine
only), or “” (for total fuel flow both engines).
EMU36091
Fuel consumption meter / Fuel economy meter / Twin engine speed synchronizer
The display shows either the fuel consumption meter, the fuel economy meter, or the
twin engine synchronizer.
To change the display, press the “” (mode) button repeatedly until the indicator on
the face of the gauge points to “” (fuel
consumption meter), “” (fuel economy
meter), or “” (twin engine speed synchronizer).
EMU26762
Fuel consumption meter
This gauge displays the total amount of fuel
consumed since the gauge was last reset.
To reset the total fuel consumption meter to
zero, press the “” (set) and “” (mode)
buttons at the same time.
EMU26772
Fuel economy
This gauge displays the approximate distance per liter or gallon when cruising.
If twin engines are installed on your boat, the
gauge will only display the total fuel economy
of both engines.
Fuel consumption varies greatly with boat
design, weight, propeller used, engine trim
angle, sea conditions (including wind), and
throttle position. Fuel consumption also
varies slightly with the type of water (salt,
fresh, and contaminate levels), air temperature and humidity, cleanliness of the boat
bottom, engine mounting height, skill of the
operator, and individual gasoline formulation (winter or summer fuel and amount of
additives).
36
Instruments and indicators
ZMU01753
1
2
3
4
5
ZMU01755
The Yamaha digital speedometer and fuel
management meter calculates speed,
miles traveled, and fuel economy by water
movement at the stern of the boat. This distance can vary greatly from the actual distance traveled because of water currents,
sea swells, and the condition of the water
speed sensor (if partially plugged or damaged).
Individual engines may slightly vary in their
fuel consumption due to manufacturing
variations. These variations can be even
greater if the engines are of different year
models. In addition, variations in propellers, even of the same basic dimensions of
the same design, can also cause a slight
variation in fuel consumption.
EMU26783
Twin-engine speed synchronizer
This gauge displays the difference in engine
speed (r/min) between the port and starboard
engines for reference purposes when synchronizing the two engines’ speeds.
1. Port engine speed is higher
2. Port engine speed is slightly higher
3. Engine speed is synchronized evenly between port and starboard engines
4. Starboard engine speed is slightly higher
5. Starboard engine speed is higher
If the two engines’ speeds are not synchronized while cruising, adjusting trim angle or
throttle can synchronize them.
If large differences in trim angle or throttle are
needed to synchronize the engines, consult
your Yamaha dealer for adjustments to the
throttle cables.
EMU26794
Water separator-alert indicator
This indicator will blink when water has accumulated in the water separator. In such an
event, stop the engine and drain the water
from the separator.
This indicator only operates when a water
separator sensor is equipped.
37
Instruments and indicators
TIP:
TIP:
1
2
1
2354
109 876
EMU48821
CL5 Display
The CL5 Display shows engine status and
alert information. The display can be
changed. This manual mainly covers the alert
display.
If a warning message appears on the CL5
Display, follow the instructions on the display.
The functions shown in the display varies
according to the equipment of the boat.
For more information, see the CL5 owner’s
manual.
1. Touchscreen
2. Power button
1. Boat status
2. Speedometer
3. Tank level
4. Engine condition
5. Trolling mode button
6. Trim angle
7. Engine alert
8. Tachometer
9. Sub status
10.Engine status
GPS signal strength icons
The icons shown in the upper-right of the engine screen indicate the GPS signal strength.
“ ” shows GPS satellite signal strength according to the number of antenna symbol.
“ ” shows no GPS antenna connection.
To use the GPS feature, a GPS receiver must
be connected to this device.
Contact your Yamaha dealer for information
on how to connect a GPS receiver.
Engine condition icons
Orange icons indicate engine conditions.
Yamaha Security System indicator “ ”
(optional)
This indicator appears when the Yamaha
Security System is in lock mode. Make
sure it is off before starting the engine.
Engine warm-up indicator “ ”
This indicator appears while the engine is
being warmed up and goes off when
warming-up is finished.
Engine synchronization indicator “ ”
In multiple engine types, this indicator appears while the engines are under synchronization control. It goes off when engine
synchronization control is released.
Engine alert icons
Red icons indicate engine abnormalities.
When an abnormality occurs, a pop-up window will be displayed, and the buzzer will
sound.
38
Instruments and indicators
12
1
ECM01594
Do not continue to run the engine if the
overheat-alert indicator blinks. Serious
engine damage will occur.
Do not continue to operate the engine if
an alert device has activated. Consult
your Yamaha dealer if the problem cannot be located and corrected.
1. Pop-up window
2. Confirm button
Press the confirm button to change to the
normal display. The engine alert icon will start
to blink.
1. Engine alert icon
ECM00093
Do not continue to operate the engine if an
alert device has activated. Consult your
Yamaha dealer if the problem cannot be
located and corrected.
The engine alert icon will appear according to
the kind of abnormality. The symbols and
their explanations are described below.
Overheat alert “ ”
If the engine temperature rises too high
while cruising, this alert will be activated.
Stop the engine immediately. Check the
cooling water inlet for clogging, and clear it
if it is blocked.
Low oil pressure alert “ ”
If the engine oil pressure drops too low, this
alert will be activated. Stop the engine immediately. Check the engine oil level and
replenish oil if necessary. If the alert device
has activated while the appropriate engine
oil level is maintained, consult your
Yamaha dealer.
ECM01602
Do not continue to run the engine if the
low oil pressure alert device has activated.
Serious engine damage will occur.
Water in Fuel Alert “ ”
If water has accumulated in the water separator (fuel filter) while cruising, this alert
will be activated. Stop the engine immediately and see page 95 of this manual to
drain the water from the fuel filter. Consult
a Yamaha dealer.
ECM00911
Gasoline mixed with water could cause
damage to the engine.
Low battery voltage alert “ ”
If the battery voltage drops, this alert will be
activated. If the low battery voltage alert
device has activated, return to port and
consult a Yamaha dealer immediately. To
charge the battery, consult your Yamaha
dealer.
39
Instruments and indicators
TIP:
SETMODE
21
ZMU08407
12
3
ZMU08408
SETMODE
21
ZMU08409
1
3
2
ZMU08410
Check engine alert “ ”
If the engine malfunctions while cruising,
this alert will be activated. Return to port
and consult a Yamaha dealer immediately.
Check System / Steering Malfunction
Alert
If a malfunction occurs in the system, the
system alert will be activated. Return to
port immediately and contact your Yamaha
dealer.
The information displayed on the multifunction display can be changed. For information
on other settings or changing the displayed
information, see the operation manual included with the 6Y8 Multifunction meter.
This manual mainly covers the alert display of
the 6Y8 Multifunction tachometer. See the
following sections for information about the
alert indicators.
Indicators
1
7654
2 3
ZMU08411
SETMODE
1
ZMU08412
1
ZMU08413
1
ZMU08414
Instruments and indicators
1. Yamaha Security System indicator (optional)
2. Water separator-alert indicator
3. Engine trouble-alert indicator
4. Battery voltage indicator
5. Overheat-alert indicator
6. Low oil pressure-alert indicator
7. Cooling water pressure indicator (optional)
Yamaha Security System indicator (op-
tional)
This indicator appears, when the Yamaha Security System is in lock mode.
Lock mode
1. Yamaha Security System indicator (optional)
Make sure that the Yamaha Security System
indicator is off before starting the engine.
Water separator-alert indicator
If water has accumulated in the water separator (fuel filter) while cruising, the water separator-alert indicator will start to blink.
1. Water separator-alert indicator
Stop the engine immediately and see page
95 of this manual to drain the water from the
fuel filter. Get back to the port soon and consult a Yamaha dealer immediately.
ECM00911
Gasoline mixed with water could cause
damage to the engine.
Engine trouble-alert indicator
If the engine malfunctions while cruising, the
engine trouble-alert indicator will start to
blink. Get back to the port soon and consult
a Yamaha dealer immediately.
1. Engine trouble-alert indicator
ECM00921
In such an event, the engine will not operate properly. Consult a Yamaha dealer immediately.
41
Instruments and indicators
1
ZMU08415
1
ZMU08416
1
ZMU08417
Low battery voltage alert
If the battery voltage drops, the battery voltage value will start to blink.
1. Battery voltage value
Get back to the port soon if the low battery
voltage alert device has activated. For charging the battery, consult your Yamaha dealer.
Overheat-alert indicator
If the engine temperature rises too high while
cruising, the overheat-alert indicator will start
to blink, and the engine speed will automatically decrease to about 2000–3500 r/min.
ECM01594
Do not continue to run the engine if the
overheat-alert indicator blinks. Serious
engine damage will occur.
Do not continue to operate the engine if
an alert device has activated. Consult
your Yamaha dealer if the problem cannot be located and corrected.
Low oil pressure-alert indicator
If the engine oil pressure drops too low, the
low oil pressure-alert indicator will start to
blink, and the engine speed will automatically
decrease to about 2000–3500 r/min.
1. Overheat-alert indicator
Stop the engine immediately if the buzzer
sounds and the overheat device has activated. Check the cooling water inlet for clogging.
42
1. Low oil pressure-alert indicator
Stop the engine immediately if the buzzer
sounds and the low oil pressure-alert indicator blinks. Check the engine oil level and replenish oil if necessary. If the alert device has
activated while the appropriate engine oil level is maintained, consult your Yamaha dealer.
ECM01602
Do not continue to run the engine if the
low oil pressure alert device has activated.
Serious engine damage will occur.
EMU26806
ZMU05422
ZMU01758
ZMU04583
ZMU07859
Alert system
ECM00093
Do not continue to operate the engine if an
alert device has activated. Consult your
Yamaha dealer if the problem cannot be
located and corrected.
EMU41927
Overheat alert
This engine has an overheat-alert device. If
the engine temperature rises too high, the
alert device will activate.
The engine speed will automatically de-
crease to about 2000–3500 r/min.
The overheat-alert indicator will light or
blink.
Engine control system
The pop-up window will appear on the
Multi-Display.
The buzzer will sound.
If the alert system has activated, stop the engine and check the cooling water inlets:
Check trim angle to be sure that the cooling
water inlet is submerged.
43
Engine control system
TIP:
1
ZMU08288
ON
OFFSTART
ZMU05431
1. Cooling water inlet
Check the cooling water inlet for clogging.
Twin engine drive users
If the overheat alert system of one outboard
motor activates, the engine will slow down.
To turn off the alert activation on the outboard motors not affected by overheating
(1) Turn the main switch to “” (off) for the
overheating outboard motor.
If the alert system has activated, stop the engine and tilt the outboard motor up to check
the cooling water inlets for clogging.
(2) If the alert system is still activated, tilt the
overheated outboard motor up and return to port.
EMU41937
Low oil pressure alert
If the oil pressure drops too low, the alert device will activate.
The engine speed will automatically de-
crease to about 2000–3500 r/min.
The low oil pressure-alert indicator will light
or blink.
44
The pop-up window will appear on the
Multi-Display.
The buzzer will sound.
TIP:
ZMU01758
ZMU07012
ZMU07859
ON
OFFSTART
Engine control system
If the alert system has activated, stop the engine as soon as it is safe to do so. Check the
oil level and add oil as needed. If the oil level
is correct and the alert system does not turn
off, consult your Yamaha dealer.
Twin engine drive users
If the low oil pressure alert system of one outboard motor activates, all of the engines will
slow down and the buzzer will sound.
To turn off the alert activation on the outboard motors not affected by the low oil pressure
Turn the main switch to “” (off) for the outboard motor that has the low oil pressure.
EMU41947
Water separator alert
The outboard motor is equipped with a water
separator alert system. If water separated
from the fuel exceeds a specific volume, the
alert system will activate.
The water separator-alert indicator will
come on or blink.
45
Engine control system
ZMU05424
The pop-up window will appear on the
Multi-Display.
The buzzer will sound intermittently when
the control lever is in the neutral position.
If the alert system has activated
Stop the engine and see page 97 of this manual to drain the water from the fuel filter. Return to port and consult a Yamaha dealer
immediately.
ECM02471
Although the buzzer will stop when the engine is started and the control lever is
moved to the forward or reverse position,
do not use the outboard motor. Otherwise,
serious engine damage could occur.
46
EMU26903
1
1
Installation
The information presented in this section is
intended as reference only. It is not possible
to provide complete instructions for every
possible boat and motor combination. Proper
mounting depends in part on experience and
the specific boat and motor combination.
EWM01591
Installation
Overpowering a boat could cause se-
vere instability. Do not install an out-
board motor with more horsepower
than the maximum rating on the capaci-
ty plate of the boat. If the boat does not
have a capacity plate, consult the boat
manufacturer.
Improper mounting of the outboard mo-
tor could result in hazardous conditions
such as poor handling, loss of control,
or fire hazards. For permanently mount-
ed models, your dealer or other person
experienced in proper rigging should
mount the motor.
EMU33482
Mounting the outboard motor
The outboard motor should be mounted so
that the boat is well balanced. Otherwise, the
boat could be hard to steer. For single-engine
boats, mount the outboard motor on the centerline (keel line) of the boat. For twin engine
boats, mount the outboard motors equidistant from the centerline. Consult your
Yamaha dealer or boat manufacturer for fur-
ther information on determining the proper
mounting location.
1. Center line (keel line)
1. Center line (keel line)
EMU26937
Mounting height (boat bottom)
The mounting height of your outboard motor
affects its efficiency and reliability. If it is
mounted too high, propeller ventilation may
occur, which will reduce propulsion due to
excessive propeller slip, and the water intakes for the cooling system may not get an
adequate water supply, which can cause engine overheating. If the engine is mounted too
low, water resistance (drag) will increase,
thereby reducing engine efficiency and performance.
Most commonly, an outboard motor should
be mounted so that the anti-cavitation plate
is in alignment with the bottom of the boat.
The optimum mounting height of the outboard motor is affected by the boat/motor
combination and the desired use. Test runs
at different heights can help determine the
47
Installation
1
optimum mounting height. Consult your
Yamaha dealer or boat manufacturer for fur-
ther information on determining the proper
mounting height.
1. Idle hole
ECM01635
Make sure that the idle hole is high
enough to prevent water from entering
the engine even if the boat is stationary
with the maximum load.
Incorrect engine height or obstructions
to the smooth flow of water (such as the
design or condition of the boat, or ac-
cessories, such as transom ladders or
depth finder transducers) can create air-
borne water spray while the boat is
cruising. If the outboard motor is oper-
ated continuously in the presence of air-
borne water spray, enough water could
enter the engine through the air intake
opening in the top cowling to cause se-
vere engine damage. Remove the cause
of the airborne water spray.
48
Operation
TIP:
ZMU01710
EMU36382
First-time operation
EMU36393
Fill engine oil
The engine is shipped from the factory without engine oil. If your dealer did not fill the oil,
you must fill it before starting the engine.
NOTICE: Check that the engine is filled
with oil before first-time operation to avoid
severe engine damage.
The engine is shipped with the following tag,
which should be removed after engine oil is
filled for the first time. For more information
on checking the engine oil level, see page 51.
[ECM01782]
life. NOTICE: Failure to follow the break-in
procedure could result in reduced engine
life or even severe engine damage.
EMU27086
[ECM00802]
Procedure for 4-stroke models
Your new engine requires a period of 10
hours break-in to allow mating surfaces of
moving parts to wear in evenly.
Run the engine in the water, under load (in
gear with a propeller installed) as follows. For
10 hours for breaking in engine avoid extended idling, rough water and crowded areas.
(1) For the first hour of operation:
Run the engine at varying speeds up to
2000 r/min or approximately half throttle.
(2) For the second hour of operation:
Increase engine speed as much as necessary to put the boat on plane (but
avoid full-throttle operation), then back
off on the throttle while keeping the boat
at a planing speed.
(3) Remaining 8 hours:
Run the engine at any speed. However,
avoid operating at full throttle for more
than 5 minutes at a time.
(4) After the first 10 hours:
Operate the engine normally.
EMU30175
Breaking in engine
Your new engine requires a period of breakin to allow mating surfaces of moving parts to
wear in evenly. Correct break-in will help ensure proper performance and longer engine
EMU36402
Getting to know your boat
All boats have unique handling characteristics. Operate cautiously while you learn how
your boat handles under different conditions
and various trim angles (see page 63).
49
Operation
1
1
EMU36414
Checks before starting engine
EWM01922
If any item in “Checks before starting engine” is not working properly, have it inspected and repaired before operating the
outboard motor. Otherwise, an accident
could occur.
ECM00121
Do not start the engine out of water. Overheating and serious engine damage can
occur.
1. Cowling lock lever
EMU36443
Fuel system
EWM00061
EMU36422
Fuel level
Be sure you have plenty of fuel for your trip. A
good rule is to use 1/3 of your fuel to get to
the destination, 1/3 to return, and to keep 1/3
as an emergency reserve. With the boat level
on a trailer or in the water, turn the key to “ ”
(on) and check the fuel level. For fuel filling instructions, see page 54.
EMU40774
Removing top cowling
For the following checks, remove the top
cowling from the bottom cowling.
To remove the top cowling, pull the cowling
lock levers and lift up the top cowling.
Gasoline and its vapors are highly flammable and explosive. Keep away from sparks,
cigarettes, flames, or other sources of ignition.
EWM00911
Leaking fuel can result in fire or explosion.
Check for fuel leakage regularly.
If any fuel leakage is found, the fuel sys-
tem must be repaired by a qualified mechanic. Improper repairs can make the
outboard unsafe to operate.
EMU36453
Check for fuel leaks
Check for fuel leaks or gasoline fumes in
the boat.
Check for fuel leakage from the fuel sys-
tem.
Check the fuel tank and fuel lines for
cracks, swellings, or other damage.
1. Cowling lock lever
50
Operation
1
ZMU06873
1
2
1
EMU37323
Checking the fuel filter
Check that the fuel filter is clean and free of
water. If any water is found in the fuel, or if a
significant amount of debris is found, the fuel
tank should be checked and cleaned by a
Yamaha dealer.
1. Fuel filter
EMU36903
Controls
Tiller handle models:
Move the tiller handle fully to the left and
right to make sure operation is smooth.
Turn the throttle grip from the fully closed
to the fully open position. Make sure that it
turns smoothly and that it completely re-
turns to the fully closed position.
Look for loose or damaged connections of
the throttle and shift cables.
Remote control models:
Turn the steering wheel full-right and full-
left. Make sure operation is smooth and un-
restricted throughout the whole range with
no binding or excessive free play.
Operate the throttle levers several times to
make sure there is no hesitation in their
travel. Operation should be smooth over
the complete range of motion, and each le-
ver should return completely to the idle po-
sition.
Look for loose or damaged connections of
the throttle and shift cables.
EMU36484
Engine shut-off cord (lanyard)
Inspect the engine shut-off cord and clip for
damage, such as cuts, breaks, and wear.
1. Clip
2. Engine shut-off cord (lanyard)
EMU40994
Engine oil
(1) Place the outboard motor in a vertical
position (not tilted). NOTICE: If the out-
board motor is not level, the oil level
indicated on the oil dipstick may not
be accurate.
(2) Remove the oil dipstick and wipe it
clean.
1. Oil dipstick
(3) Insert the oil dipstick completely and re-
move it again.
[ECM01862]
51
Operation
1
32
123
1
2
(4) Check that the oil level on the oil dipstick
is between the upper and lower marks.
Consult your Yamaha dealer if the oil level is not at the proper level or if it appears
milky or dirty.
1. Oil dipstick
2. Upper mark
3. Lower mark
EMU40412
Outboard motor
Check that the outboard motor is mounted
properly and check the outboard motor
mounting bolts for looseness.
Check the propeller for damage.
Check for engine oil leaks.
1. Fitting
2. Garden hose connector
3. Flushing device
EMU36965
Install cowling
(1) Be sure that all cowling lock levers are
released.
(2) Be sure that the rubber seal is seated all
the way around the top cowling.
EMU36494
Flushing device
Check that the flushing device’s garden hose
connector is securely screwed on to the fitting on the bottom cowling. NOTICE: If the
garden hose connector is not properly
connected, cooling water can leak out and
the engine can overheat during operation.
[ECM01802]
52
1. Top cowling
2. Rubber seal
(3) Place the top cowling on the bottom
cowling.
(4) Check to be sure the rubber seal is seat-
ed correctly between the top cowling
and the bottom cowling.
(5) Move the cowling lock levers to lock the
top cowling as shown. NOTICE: If the
top cowling is not installed correctly,
Operation
1
1
ZMU07760
1
ZMU08094
water spray under the top cowling can
damage the engine, or the top cowling
can blow off at high speeds.
1. Cowling lock lever
1. Cowling lock lever
[ECM01992]
After installing, check the fitting of the top
cowling by pushing it with both hands. If the
top cowling is loose, have it repaired by your
Yamaha dealer.
EMU34582
Power trim and tilt system
EWM01931
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.
Body parts can be crushed between the
motor and the clamp bracket when the
motor is trimmed or tilted.
Be sure no one is near the outboard mo-
tor before performing this check.
(1) Check the power trim and tilt unit for any
sign of oil leaks.
(2) Operate each of the power trim and tilt
switches to check that all switches work.
(3) Tilt the outboard motor up and check
that the trim and tilt rod is pushed out
completely.
1. Trim and tilt rod
(4) Check that the trim and tilt rod is free of
corrosion or other flaws.
(5) Tilt the outboard motor down. Check
that the trim and tilt rod operates
smoothly.
EMU36585
Battery
Check the battery’s charge. If your boat is
equipped with a Yamaha digital speedometer, the voltmeter and low battery alert func-
53
Operation
tions will help you monitor the battery’s
charge. A battery in good condition will provide a minimum of 12 volts. Check that the
battery connections are clean, secure and
covered by insulating covers. The electrical
connections of the battery and cables must
be clean and properly connected or the battery will not start the engine.
If the battery needs charging, consult your
Yamaha dealer or the battery manufacturer’s
instructions.
EMU30027
Filling fuel
EWM01831
Gasoline and its vapors are highly flam-
mable and explosive. Always refuel ac-
cording to this procedure to reduce the
risk of fire and explosion.
Gasoline is poisonous and can cause in-
jury or death. Handle gasoline with care.
Never siphon gasoline by mouth. If you
should swallow some gasoline or inhale
a lot of gasoline vapor, or get some gas-
oline in your eyes, see your doctor im-
mediately. If gasoline spills on your skin,
wash with soap and water. If gasoline
spills on your clothing, change your
clothes.
(1) Make sure that the engine is stopped.
(2) Make sure that the boat is in a well-ven-
tilated outdoor area, either securely
moored or trailered.
(3) Make sure that no one is in the boat.
(4) Do not smoke and keep away from
sparks, flames, static electric discharge,
or other sources of ignition.
(5) If you use a portable container to store
and dispense fuel, only use a locally ap-
proved GASOLINE container.
(6) Touch the fuel nozzle to the filler opening
or funnel to help prevent electrostatic
sparks.
(7) Fill the fuel tank, but do not overfill.
WARNING! Do not overfill. Otherwise
fuel can expand and overflow if the
temperature increases.
[EWM02611]
(8) Tighten the fuel tank cap securely.
(9) Wipe up any spilled gasoline immediate-
ly with dry rags. Dispose of rags properly
according to local laws or regulations.
EMU40252
Operating engine
EWM02601
This product emits exhaust gases which
contain carbon monoxide, a colorless,
odorless gas which could cause brain
damage or death when inhaled. Symptoms include nausea, dizziness, and
drowsiness. Keep cockpit and cabin areas
well ventilated. Avoid blocking exhaust
outlets.
EMU31814
Sending fuel
(1) If there is a fuel joint or a fuel valve on the
boat, firmly connect the fuel line to the
joint or open the fuel valve.
(2) Squeeze the primer pump, with the ar-
row pointing up, until you feel it become
firm.
54
TIP:
1. Arrow
11
Operation
EMU27496
Starting engine
EWM01601
Before starting the engine, make sure that
the boat is tightly moored and that you can
steer clear of any obstructions. Be sure
there are no swimmers in the water near
you.
EMU27597
Electric start / prime start models
EWM01842
Failure to attach the engine shut-off
cord could result in a runaway boat if
operator is ejected. Attach 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 dur-
ing 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.
The start-in-gear protection device prevents
the engine from starting except when in neutral.
(2) Attach the engine shut-off cord to a se-
cure place on your clothing, or your arm
or leg. Then install the clip on the other
end of the cord into the engine shut-off
switch.
(3) Place the throttle grip in the “”
(start) position. After the engine starts,
return the throttle to the fully closed position.
(1) Place the gear shift lever in neutral.
55
Operation
TIP:
N
ZMU01771
(4) Turn the main switch to “” (start),
and hold it for a maximum of 5 seconds.
(5) Immediately after the engine starts, re-
lease the main switch and allow it to re-
turn to “ ” (on). NOTICE: Never turn
the main switch to “” (start) while
the engine is running. Do not keep the
starter motor turning for more than 5
seconds. If the starter motor is turned
continuously for more than 5 seconds,
the battery will be quickly discharged,
thus making it impossible to start the
engine. The starter can also be dam-
aged. If the engine will not start after 5
seconds of cranking, return the main
switch to “” (on), wait 10 seconds,
then crank the engine again.
When the engine is cold, it needs to be
warmed up. For further information, see
page 59.
[ECM00193]
If the engine is warm and fails to start, open
the throttle slightly and try to start the engine again. If the engine still fails to start,
see page 92.
EMU2762B
Electric start and remote control models
EWM01842
Failure to attach the engine shut-off
cord could result in a runaway boat if
operator is ejected. Attach 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 dur-
ing 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) Place the remote control lever in “ ”
(neutral).
56
TIP:
The start-in-gear protection device prevents
TIP:
N
ZMU04588
ZMU01772
ZMU04628
ON
STARTOFF
ON
STARTOFF
ZMU05828
ON
START
ZMU01774
the engine from starting except when in neutral.
(2) Attach the engine shut-off cord to a se-
cure place on your clothing, or your arm
or leg. Then install the clip on the other
end of the cord into the engine shut-off
switch.
Operation
(3) Turn the main switch to “” (on).
Dual engine users: When the main switch is
turned on, the buzzer operates for a few seconds then stops automatically. The buzzer
also operates if one of the engines stalls.
(4) Turn the main switch to “” (start),
and hold it for a maximum of 5 seconds.
57
Operation
TIP:
ZMU06928
ON
START
ON
START
ZMU05830
1
(5) Immediately after the engine starts, re-
lease the main switch to return it to “ ”
(on). NOTICE: Never turn the main
switch to “” (start) while the en-
gine is running. Do not keep the start-
er motor turning for more than 5
seconds. If the starter motor is turned
continuously for more than 5 seconds,
the battery will be quickly discharged,
thus making it impossible to start the
engine. The starter can also be dam-
aged. If the engine will not start after 5
seconds of cranking, return the main
switch to “” (on), wait 10 seconds,
then crank the engine again.
[ECM00193]
EMU36511
Checks after starting engine
EMU41361
Cooling water
Check for a steady flow of water from the
cooling water pilot hole. A continuous flow of
water from the cooling water pilot hole shows
that the water pump is pumping water
through the cooling water passages.
When the engine is started, there may be a
slight delay before water flows from the cooling water pilot hole.
ECM02251
If water is not flowing out of the cooling
water pilot hole at all times while the engine is running, overheating and serious
damage could occur. Stop the engine and
check whether the cooling water inlet on
the lower case or the cooling water pilot
hole is blocked. Consult your Yamaha
dealer if the problem cannot be located
and corrected.
1. Cooling water pilot hole
58
Operation
EMU27671
Warming up engine
EMU41234
Procedure for warming up engine
(1) After starting the engine, warm up the
engine until the engine speed stabilizes
at idle speed to provide maximum oper-
ating performance and acceleration.
NOTICE: Failure to do so will shorten
engine life.
Idle speed (in neutral):
700–800 r/min
(2) Check that the low oil pressure-alert indi-
cator remains off. NOTICE: If the low oil
pressure-alert indicator blinks after
the engine starts, stop the engine.
Otherwise, serious engine damage
could occur. Consult your Yamaha
dealer.
EMU36532
[ECM04550]
[ECM02381]
Checks after engine warm up
EMU36542
Shifting
While the boat is tightly moored, and without
applying throttle, confirm that the engine
shifts smoothly into forward and reverse, and
back to neutral.
EMU36981
Stop switches
Turn the main switch to “”, or press the
engine stop button and make sure the engine stops.
Confirm that removing the clip from the en-
gine shut-off switch stops the engine.
Confirm that the engine cannot be started
with the clip removed from the engine shutoff switch.
EMU33493
Shifting
EWM00181
Before shifting, make sure there are no
swimmers or obstacles in the water near
you.
ECM01611
Warm up the engine before shifting into
gear. Until the engine is warm, the idle
speed may be higher than normal. High
idle speed can prevent you from shifting
back to neutral. If this occurs, stop the engine, shift to neutral, then restart the engine and allow it to warm up.
To shift out of neutral
(1) Pull the neutral interlock trigger up (if
equipped).
1
ZMU01727
1. Neutral interlock trigger
(2) Move the remote control lever / gear shift
lever firmly and crisply forward (for forward gear) or backward (for reverse gear)
[about 35° (a detent can felt) for remote
control models].
59
Operation
F
N
R
32˚
32˚
ZMU05460
RF
ZMU05462
To shift from in gear (forward/reverse) to neutral
(1) Close the throttle so that the engine
slows to idle speed.
60
(2) After the engine is at idle speed in gear
move the remote control lever / gear shift
lever firmly and crisply into the neutral
position.
Operation
TIP:
N
ZMU01771
N
ZMU04588
1121
2
Do not shift into reverse while traveling
at planing speeds. Loss of control, boat
swamping, or damage to the boat could
occur.
The boat is not equipped with a separate
braking system. Water resistance stops it after the throttle lever is moved back to idle.
The stopping distance varies depending on
gross weight, water surface conditions, and
wind direction.
EMU30881
Trolling
EMU30891
Adjusting trolling speed
The trolling speed on outboard motors
equipped with the variable trolling RPM
switches can be adjusted approximately 50
r/min with each press of a switch.
EMU31743
Stopping boat
EWM01511
Do not use the reverse function to slow
down or stop the boat as it could cause
you to lose control, be ejected, or impact the steering wheel or other parts of
the boat. This could increase the risk of
serious injury. It could also damage the
shift mechanism.
1. “ ” switch
2. “ ” switch
To increase the trolling speed, press the “”
switch.
To decrease the trolling speed, press the
“” switch.
The trolling speed changes approximately
50 r/min each time a switch is pressed.
61
Operation
ON
OFF
ZMU01779
ZMU06932
ON
OFF
OFFOFF
ONON
ZMU05833
If the trolling speed has been adjusted, the
engine returns to the normal trolling speed
when the engine is stopped and restarted
or when the engine speed exceeds approximately 3000 r/min.
EMU27823
Stopping engine
Before stopping the engine, first let it cool off
for a few minutes at idle or low speed. Stopping the engine immediately after operating
at high speed is not recommended.
EMU2784A
Procedure
(1) Push and hold the engine stop button or
turn the main switch to “” (off).
62
(2) After stopping the engine, disconnect
the fuel line if there is a fuel joint on the
outboard motor.
(3) Tighten the air vent screw on the fuel
tank cap (if equipped).
(4) Remove the key if the boat will be left un-
attended.
TIP:
The engine can also be stopped by pulling
1
DN
UP
1
ZMU01781
the cord and removing the clip from the engine shut-off switch, then turning the main
switch to “” (off).
EMU27865
Trimming outboard motor
EWM00741
Excessive trim for the operating conditions (either trim up or trim down) can cause boat instability and can make steering
the boat more difficult. This increases the
possibility of an accident. If the boat begins to feel unstable or is hard to steer,
slow down and/or readjust the trim angle.
The trim angle of the outboard motor helps
determine the position of the bow of the boat
in the water. Correct trim angle will help improve performance and fuel economy while
reducing strain on the engine. Correct trim
angle depends upon the combination of
boat, engine, and propeller. Correct trim is
also affected by variables such as the load in
the boat, sea conditions, and running speed.
Operation
EMU27889
Adjusting trim angle (Power trim and
tilt)
EWM00754
Be sure all people are clear of the out-
board motor when adjusting the trim angle. Body parts can be crushed between
the motor and the clamp bracket when
the motor is trimmed or tilted.
Use caution when trying a trim position
for the first time. Increase speed gradually and watch for any signs of instability
or control problems. Improper trim angle can cause loss of control.
If equipped with a power trim and tilt
switch located on the bottom cowling,
use the switch only when the boat is at a
complete stop with the engine off. Do
not adjust the trim angle with this switch
while the boat is moving.
Adjust the outboard motor trim angle using
the power trim and tilt switch.
1. Trim operating angle
1. Power trim and tilt switch
63
Operation
DN
UP
1
11
1. Power trim and tilt switch
1. Power trim and tilt switch
To raise the bow (trim-out), press the switch
“” (up).
To lower the bow (trim-in), press the switch
“” (down).
Make test runs with the trim set to different
angles to find the position that works best for
your boat and operating conditions.
EMU27913
Adjusting boat trim
When the boat is on plane, a bow-up attitude
results in less drag, greater stability and efficiency. This is generally when the keel line of
the boat is up about 3 to 5 degrees. With the
bow up, the boat may have a greater tendency to steer to one side or the other. Compensate for this as you steer. When the bow of
the boat is down, it is easier to accelerate
from a standing start onto plane.
Bow Up
Too much trim-out puts the bow of the boat
too high in the water. Performance and economy are decreased because the hull of the
boat is pushing the water and there is more
air drag. Excessive trim-out can also cause
the propeller to ventilate, which reduces performance further, and the boat may “porpoise” (hop in the water), which could throw
the operator and passengers overboard.
Bow Down
Too much trim-in causes the boat to “plow”
through the water, decreasing fuel economy
and making it hard to increase speed. Operating with excessive trim-in at higher speeds
also makes the boat unstable. Resistance at
the bow is greatly increased, heightening the
danger of “bow steering” and making operation difficult and dangerous.
64
Operation
TIP:
N
ZMU01771
N
ZMU07382
ECM00242
Before tilting the outboard motor, stop
the engine by following the procedure
on page 62. Never tilt the outboard motor while the engine is running. Severe
damage from overheating can result.
Do not tilt up the engine by pushing the
tiller handle (if equipped) because this
could break the handle.
Depending on the type of boat, the outboard
motor trim angle may have little effect on the
trim of the boat when operating.
EMU27936
Tilting up and down
If the engine will be stopped for some time or
if the boat is moored in shallows, the outboard motor should be tilted up to protect the
propeller and lower casing from damage by
collision with obstructions, and also to reduce salt corrosion.
EWM00223
Make sure that no one is near the outboard motor when tilting the outboard
motor up or down. Otherwise, body parts
could be crushed between the outboard
motor and the clamp bracket.
EWM00251
Leaking fuel is a fire hazard. If there is a
fuel joint on the outboard motor, disconnect the fuel line or close the fuel cock if
the engine will be tilted for more than a
few minutes. Otherwise fuel may leak.
EMU44631
Procedure for tilting up (power trim
and tilt models)
(1) Place the remote control lever / gear shift
lever in neutral.
65
Operation
UP
1
ZMU07850
UP
1
1
UP
1
(2) Press the power trim and tilt switch “ ”
(up) until the outboard motor has tilted
up completely.
1. Power trim and tilt switch
1. Power trim and tilt switch
1. Power trim and tilt switch
1. Power trim and tilt switch
(3) Pull the tilt support lever toward you to
support the engine. WARNING! After
tilting the outboard motor, be sure to
support it with the tilt support knob or
tilt support lever. Otherwise the outboard motor could fall back down
suddenly if oil in the power trim and tilt
unit or in the power tilt unit loses pressure.
[EWM00263]NOTICE: Do not use the
tilt support lever or knob when trailering the boat. The outboard motor
could shake loose from the tilt support
and fall. If the motor cannot be
trailered in the normal running position, use an additional support device
to secure it in the tilt position. For
more detailed information, see page
70.
[ECM01642]
66
Operation
1
1
1
DN
ZMU07853
DN
1
1
DN
1. Tilt support lever
EMU42703
Procedure for tilting down
(1) Push the power trim and tilt switch “ ”
(up) until the outboard motor is support-
ed by the tilt rod and the tilt support lever
becomes free.
(2) Release the tilt support lever.
1. Tilt support lever
(3) Push the power trim and tilt switch “ ”
(down) to lower the outboard motor to
the desired position.
1. Power trim and tilt switch
1. Power trim and tilt switch
1. Power trim and tilt switch
67
Operation
1
1
N
ZMU01771
N
ZMU04588
1. Power trim and tilt switch
EMU28063
Shallow water
EMU40702
Cruising in shallow water
The outboard motor can be tilted up partially
to allow operation in shallow water.
ECM02361
Do not tilt the outboard motor up so that
the cooling water inlet on the lower unit is
above the surface of the water when setting up for and cruising in shallow water.
Otherwise severe damage from overheating can result.
1. Cooling water inlet
EMU32914
Procedure for power trim and tilt models
(1) Place the remote control lever / gear shift
lever in neutral.
68
(2) Slightly tilt the outboard motor up to the
desired position using the power trim
and tilt switch. WARNING! Using the
power trim and tilt switch on the bottom cowling while the boat is moving
or engine is on could increase the risk
of falling overboard and could distract
the operator, increasing the risk of
collision with another boat or an obstacle.
[EWM01851]
(3) To return the outboard motor to the nor-
mal running position, press the power
trim and tilt switch and slowly tilt the out-
board motor down.
EMU28196
Cruising in other conditions
Cruising in salt water
After operating in salt water, flush the cooling
water passages with fresh water to prevent
them from becoming clogged. Also rinse the
outside of the outboard motor with fresh water.
Cruising in muddy, turbid, or acidic water
Yamaha strongly recommends that you use
the optional chromium-plated water pump kit
(see page 15) if you use the outboard motor
in acidic water or water with a lot of sediment
in it, such as muddy or turbid (cloudy) water.
After operating in such water, flush the cooling passages with fresh water to prevent corrosion. Also rinse the outside of the outboard
motor with fresh water.
Operation
69
Maintenance
EMU31845
Transporting and storing out-
board motor
EWM02641
USE CARE when transporting fuel tank,
whether in a boat or car.
DO NOT fill fuel container to maximum
capacity. Gasoline will expand considerably as it warms up and can build up
pressure in the fuel container. This can
cause fuel leakage and a potential fire
hazard.
Leaking fuel is a fire hazard. Tighten se-
curely the fuel valve when transporting
and storing the outboard motor.
Never get under the outboard motor
while it is tilted. Severe injury could occur if the outboard motor accidentally
falls.
Do not use the tilt support lever or knob
when trailering the boat. The outboard
motor could shake loose from the tilt
support and fall. If the outboard motor
cannot be trailered in the normal running position, use an additional support
device to secure it in the tilt position.
ECM02441
When storing the outboard motor for prolonged time, fuel must be drained from the
fuel tank. The deteriorated fuel could clog
the fuel line causing engine start difficulty
or malfunction.
Leaking fuel is a fire hazard. When trailering
the boat, close the fuel valve to prevent fuel
from leaking.
The outboard motor should be transported
and stored in the normal running position. If
there is insufficient road clearance in this po-
sition, then trailer the outboard motor in the
tilt position using a motor support device
such as a transom saver bar. Consult your
Yamaha dealer for further details.
When the outboard motor is tilted prolonged
time for mooring or trailering the boat, close
the fuel valve.
EMU44930
Storing outboard motor
When storing your Yamaha outboard motor
for prolonged periods of time (2 months or
longer), several important procedures must
be performed to prevent excessive damage.
It is advisable to have your outboard motor
serviced by an authorized Yamaha dealer prior to storage. However, you, the owner, with
a minimum of tools, can perform the following procedures.
ECM04450
To prevent problems which can be
caused by oil entering the cylinder from
the sump, keep the outboard motor in
the attitude shown when transporting
and storing it. If storing or transporting
the outboard motor on its side (not upright, port side only), put it on a cushion
after draining the engine oil.
Do not place the outboard motor on its
side before the cooling water has
drained from it completely, otherwise
water may enter the cylinder through the
exhaust port and cause engine trouble.
Store the outboard motor in a dry, well-
ventilated place, not in direct sunlight.
Drain the remaining gasoline from the
vapor separator. Gasoline left in the vapor separator for a prolonged period of
time will break down and could cause
damage to the fuel line.
70
EMU28306
TIP:
ZMU08126
1
Procedure
EMU44323
Flushing with the flushing attachment
EWM00323
You could be seriously injured if the engine accidentally starts when you are near
the propeller.
Before inspecting, removing, or install-
ing the propeller, remove the ignition
coils from the spark plugs. Also, place
the shift control in neutral, turn the main
switch to “” (off) and remove the key,
and remove the clip from the engine
shut-off switch. Turn off the battery cutoff switch if your boat has one.
Do not use your hand to hold the propel-
ler when loosening or tightening the
propeller nut. Put a wood block between
the anti-cavitation plate and the propeller to prevent the propeller from turning.
Cooling system flushing is essential to prevent the cooling system from clogging up
with salt, sand, or dirt. In addition, fogging/lubricating of the engine is mandatory to prevent excessive engine damage due to rust.
Perform the flushing and fogging at the same
time.
Maintenance
(1) If there is a fuel joint or a fuel valve on the
boat, disconnect the fuel line from the
joint or close the fuel valve.
(2) Wash the exterior of the outboard motor
using fresh water. NOTICE: Do not
spray water into the air intake.
For further information, see page 73.
(3) Remove the top cowling and propeller.
(4) Install the flushing attachment over the
cooling water inlet, and then turn on the
water supply. NOTICE: Do not run the
engine without supplying it with cool-
ing water. Either the engine water
pump will be damaged or the engine
will be damaged from overheating.
Before starting the engine, be sure to
supply water to the cooling water pas-
sages. Avoid running the outboard
motor at high speed while on the
flushing attachment, otherwise over-
heating could occur.
1. Flushing attachment
[ECM02001]
A flushing attachment is available from your
Yamaha dealer.
(5) Run the engine at a fast idle for a few mi-
nutes in neutral while supplying fresh wa-
ter. WARNING! Do not touch or
remove electrical parts when starting
or during operation. Keep hands, hair,
and clothes away from the flywheel
[ECM01841]
71
Maintenance
TIP:
TIP:
TIP:
ZMU08100
and other rotating parts while the engine is running.
[EWM00092]NOTICE: Never
turn the main switch to “” (start)
while the engine is running. Do not
keep the starter motor turning for
more than 5 seconds. If the starter
motor is turned continuously for more
than 5 seconds, the battery will be
quickly discharged, thus making it impossible to start the engine. The starter can also be damaged. If the engine
will not start after 5 seconds of cranking, return the main switch to “ ”
(on), wait 10 seconds, then crank the
engine again.
[ECM00193]
When using the flushing attachment, main-
tain adequate water pressure so that there
is a steady flow of water from the cooling
water pilot hole.
If the overheat alert device is activated, turn
the engine off, and consult your Yamaha
dealer.
(6) Just prior to turning off the engine, quick-
ly spray fogging oil into the intake silencer. When properly done, the engine will
smoke excessively and almost stall.
(7) Turn off the water supply, and then re-
move the flushing attachment and wipe
off any excess water.
(8) Install the top cowling and propeller.
(9) Drain the cooling water completely out of
the outboard motor. Clean the exterior of
the outboard motor thoroughly.
EMU41321
Draining the gasoline from the vapor separator
Gasoline in the vapor separator must be
drained before storing the outboard motor.
Have a Yamaha dealer drain the gasoline
from the vapor separator.
EMU41072
Lubrication
(1) Change the gear oil. For instructions, see
page 88. Check the gear oil for the pres-
ence of water that indicates a leaky seal.
Seal replacement should be performed
by an authorized Yamaha dealer prior to
use.
(2) Lubricate all grease fittings. For further
details, see page 79.
For long-term storage, fogging the engine
with fogging oil is recommended. Contact
your Yamaha dealer for information about
fogging oil and procedures for your outboard
motor.
If fogging oil is not available, consult your
Yamaha dealer.
72
EMU40964
Flushing cooling water passage
Perform this procedure right after operation
for the most thorough flushing.
ECM01531
Do not perform this procedure while the
engine is running. The water pump may be
damaged and severe damage from overheating can result.
Maintenance
TIP:
2 1
231
1
(1) Disconnect the garden hose connector
from the fitting on the bottom cowling.
1. Fitting
2. Garden hose connector
(2) Connect the garden hose to the garden
hose connector.
connected, cooling water can leak out
and the engine can overheat during
operation.
[ECM01802]
When flushing the cooling water passages
with the boat in the water, tilting the outboard
motor up until it is completely out of the water
will achieve better results.
EMU44342
Cleaning the outboard motor
When cleaning the outboard motor, the top
cowling must be installed.
(1) Wash the exterior of the outboard motor
using fresh water. NOTICE: Do not
spray water into the air intake.
[ECM01841]
1. Garden hose
2. Garden hose adapter (commercially available)
3. Garden hose connector
(3) With the engine off, turn on the water
supply and let the water flush through
the cooling water passages for about 15
minutes.
(4) Turn off the water supply, and then dis-
connect the garden hose from the garden hose connector.
(5) Connect the garden hose connector to
the fitting on the bottom cowling and
tighten it securely. NOTICE: If the gar-
den hose connector is not properly
1. Air intake
(2) Drain the cooling water completely out of
the outboard motor. Clean the body
thoroughly.
EMU28463
Checking painted surface of outboard
motor
Check the outboard motor for scratches,
nicks, or flaking paint. Areas with damaged
paint are more likely to corrode. If necessary,
clean and paint the areas. Touch-up paint is
available from your Yamaha dealer.
73
Maintenance
EMU2847G
Periodic maintenance
EWM01872
These procedures require mechanical
skills, tools, and supplies. If you do not
have the proper skills, tools, or supplies to
perform a maintenance procedure, have a
Yamaha dealer or other qualified mechan-
ic do the work.
The procedures involve disassembling the
motor and exposing dangerous parts. To
reduce the risk of injury from moving, hot,
or electrical parts:
Turn off the engine and keep the key(s)
and engine shut-off cord (lanyard) with
you when you perform maintenance unless otherwise specified.
The power trim and tilt switches operate
even when the ignition key is off. Keep
people away from the switches whenever working around the motor. When the
motor is tilted, keep away from the area
under it or between it and the clamp
bracket. Be sure no one is in this area
before operating the power trim and tilt
mechanism.
Allow the engine to cool before handling
hot parts or fluids.
Always completely reassemble the mo-
tor before operation.
EMU34152
Severe operating conditions
Severe operating conditions involve one or
more of the following types of operation on a
regular basis:
Operating continuously at or near maxi-
mum engine speed (rpm) for many hours
Operating continuously at a low engine
speed (rpm) for many hours
Operating without sufficient time for engine
to warm up and cool down
Frequent quick acceleration and decelera-
tion
Frequent shifting
Frequently starting and stopping the en-
gine(s)
Operation that fluctuates often between
light and heavy cargo loads
Outboard motors operating under any of
these above conditions require more frequent maintenance. Yamaha recommends
that you do this service twice as often as
specified in the maintenance chart. For example, if a particular service should be done
at 50 hours, do it instead at 25 hours. This will
help prevent more rapid deterioration of engine components.
EMU28512
Replacement parts
If replacement parts are necessary, use only
genuine Yamaha parts or parts of equivalent
design and quality. Any part of inferior quality
may malfunction, and the resulting loss of
control could endanger the operator and passengers. Yamaha genuine parts and accessories are available from your Yamaha dealer.
74
Maintenance
TIP:
EMU46073
Maintenance chart 1
Refer to the sections in this chapter for explanations of each owner-specific action.
The maintenance cycle on these charts assume usage of 100 hours per year and regular
flushing of the cooling water passages. Maintenance frequency should be adjusted when
operating the engine under adverse conditions such as extended trolling.
Disassembly or repairs may be necessary depending on the outcome of maintenance
checks.
Expendable or consumable parts and lubricants will lose their effectiveness over time and
through normal usage regardless of the warranty period.
When operating in salt water, muddy, other turbid (cloudy), acidic water, the engine should
be flushed with clean water after each use.
The “ ” symbol indicates the check-ups which you may carry out yourself.
The “ ” symbol indicates work to be carried out by your Yamaha dealer.
InitialEvery
ItemActions
Anode(s) (external)
Anode(s) (internal)
*1
Anode(s) (internal)
*2
Battery (electrolyte level, terminal)
Battery (electrolyte level, terminal)
Cooling water
leakage
Cowling lock leverInspection50, 52
Engine starting
condition/noise
Engine idle
speed/noise
Engine oilReplacement82
Engine oil filter
(cartridge)
Inspection or replacement as necessary
Inspection or replacement as necessary
Replacement—
Inspection90
Fill, charging or replacing as necessary
Inspection or replacement as necessary
Inspection54
Inspection82
Replacement84
20 hours
(3
months)
100 hours
(1 year)
300 hours
(3 years)
500 hours
(5 years)
Page
89
—
—
—
75
Maintenance
InitialEvery
ItemActions
Fuel filter (can be
disassembled)
Fuel line (High
pressure)
Fuel line (High
pressure)
Fuel line (Low
pressure)
Fuel line (Low
pressure)
Fuel pump
Fuel/engine oil
leakage
Gear oilReplacement88
Greasing pointsGreasing79
Clamp bracket bolt
(through tube)
Impeller/water
pump housing
Impeller/water
pump housing
Power trim and tilt
unit
Propeller/propeller
nut/cotter pin
PCV (Pressure
Control Valve)
Shift link/shift cable
Spark plug(s)
Inspection or replacement as necessary
Inspection—
Inspection or replacement as necessary
Inspection—
Inspection or replacement as necessary
Inspection or replacement as necessary
Inspection—
Inspection and
greasing
Inspection or replacement as necessary
Replacement—
Inspection53
Inspection or replacement as necessary
Inspection or replacement as necessary
Inspection, adjustment or replacement as necessary
Inspection, adjustment or replacement as necessary
Inspection or replacement as necessary
Inspection or replacement as necessary
Inspection and adjustment
Inspection or replacement as necessary
Inspection or replacement as necessary
Inspection—
20 hours
(3
months)
100 hours
(1 year)
300 hours
(3 years)
500 hours
(5 years)
Page
—
—
—
—
—
—
—
—
—
*1 cylinder head
*2 cylinder block, cooling water passage, exhaust joint, exhaust manifold, exhaust guide
77
Maintenance
EMU46082
Maintenance chart 2
ItemActions
Exhaust guide/exhaust manifold
Timing beltReplacement—
Inspection or replacement as necessary
Every
1000 hours
Page
—
78
EMU28946
ZMU08103
Greasing
Yamalube grease A (water resistant grease)
Yamaha grease D (corrosion resistant grease; for propeller shaft)
Maintenance
79
Maintenance
1
1
2
1
1
1
1
EMU46322
Inspecting spark plug
The spark plug is an important engine component. The condition of the spark plug can
indicate something about the condition of the
engine. For example, if the center electrode
porcelain is very white, this could indicate an
intake air leak or carburetion problem in that
cylinder. Do not attempt to diagnose any
problems yourself. Instead, take the outboard motor to a Yamaha dealer. You should
periodically remove and check the spark plug
because heat and deposits will cause the
spark plug to slowly break down and erode.
To remove the spark plug
(1) Remove the cover.
1. Spark plug cap
(3) F130: Remove the bolt that is securing
the ignition coil, and then remove the ignition coil. NOTICE: Do not use any
tools to remove or install the ignition
coil. Otherwise, the ignition coil coupler could be damaged.
[ECM02331]
1. Cover
(2) F115, LF115: Remove the spark plug
cap from the spark plug.
80
1. Bolt
2. Ignition coil
(4) Remove the spark plug. WARNING!
When removing or installing a spark
plug, be careful not to damage the insulator. A damaged insulator could allow external sparks, which could lead
to explosion or fire.
[EWM00562]
F115, LF115
TIP:
ZMU08119
ZMU08215
11
22
33
F130
To check the spark plug
(1) Check the condition of the spark plug. If
electrode erosion becomes excessive or
carbon and other deposits are excessive, replace the spark plug with the
specified plug.
Standard spark plug:
LKR6E
(2) Measure the spark plug gap using a
thickness gauge. If the spark plug gap is
out of specification, replace the spark
plug with the specified plug.
Maintenance
1. Spark plug gap
2. Spark plug part number
3. Spark plug I.D. mark (NGK)
Spark plug gap:
0.8–0.9 mm (0.031–0.035 in)
To install the spark plug
(1) Wipe off any dirt from the threads, insu-
lator, and gasket surface of the spark
plug.
(2) Install the spark plug, and then tighten it
to the specified torque.
Spark plug tightening torque:
25 N·m (2.5 kgf·m, 18 lb·ft)
If a torque-wrench is not available when you
are reinstalling a spark plug, a good estimate
of the correct torque is 1/12 turn past fingertight. When you are installing a new spark
plug, a good estimate of the correct torque is
1/2 turn past finger-tight.
(3) F115, LF115: Install the spark plug cap.
(4) F130: Install the ignition coil, and then
tighten the bolt to the specified torque.
Bolt tightening torque:
8 N·m (0.8 kgf·m, 5.9 lb·ft)
(5) Install the cover.
81
Maintenance
ZMU08105
EMU29045
Inspecting idle speed
EWM00452
Do not touch or remove electrical parts
when starting or during operation.
Keep hands, hair, and clothes away
from the flywheel and other rotating
parts while the engine is running.
ECM00491
This procedure must be performed while
the outboard motor is in the water. A flushing attachment or test tank can be used.
If the boat is not equipped with a tachometer
for the outboard motor, use a diagnostic tachometer for this procedure. Results may
vary depending on whether testing is conducted with the flushing attachment, in a test
tank, or with the outboard motor in the water.
(1) Start the engine and allow it to warm up
fully in neutral until it is running smoothly.
(2) Once the engine has warmed up, verify
whether the idle speed is set to specification. For idle speed specifications, see
page 11. If you have difficulty verifying
the idle speed, or the idle speed requires
adjustment, consult a Yamaha dealer or
other qualified mechanic.
EMU38808
Changing engine oil
EWM00761
Avoid draining the engine oil immediate-
ly after stopping the engine. The oil is
hot and should be handled with care to
avoid burns.
Be sure the outboard motor is securely
fastened to the transom or a stable
stand.
ECM01711
Change the engine oil after the first 20
hours of operation or 3 months, and every
100 hours or at 1-year intervals thereafter.
Otherwise the engine will wear quickly.
To prevent spilling oil where it could cause
damage to nature, it is strongly recommended that you use an oil changer to change the
engine oil. If an oil changer is not available,
drain the engine oil by removing the drain
screw. If you are not familiar with the procedure for changing the engine oil, consult your
Yamaha dealer.
(1) Put the outboard motor in an upright po-
sition (not tilted). NOTICE: If the out-
board motor is not level, the oil level
indicated on the oil dipstick may not
be accurate.
[ECM01862]
(2) Start the engine. Warm it up and keep
the idle speed for 5-10 minutes.
(3) Stop the engine and leave it for 5-10 mi-
nutes.
(4) Remove the top cowling.
(5) Remove the oil filler cap. Pull out the dip-
stick and use the oil changer to extract
the oil completely.
82
Maintenance
TIP:
TIP:
TIP:
1
1
2
1
1. Oil filler cap
1. Oil changer
When using an oil changer, skip steps 6 and
7.
(6) Prepare a suitable container that holds a
larger amount than the engine oil capacity. Remove the drain screw and gasket
while holding the container under the
drain hole. Let the oil drain completely.
Wipe up any spilled oil immediately.
1. Drain screw
2. Gasket
If the oil does not drain easily, change the tilt
angle or turn the outboard motor to port and
starboard to drain the oil.
(7) Put a new gasket on the oil drain screw.
Apply a light coat of oil to the gasket and
install the drain screw.
Drain screw tightening torque:
27 N·m (2.7 kgf·m, 20 lb·ft)
If a torque wrench is not available when you
are installing the drain screw, finger tighten
the screw just until the gasket comes into
contact with the surface of the drain hole.
Then tighten 1/4 to 1/2 turn more. Tighten the
drain screw to the correct torque with a
torque wrench as soon as possible.
(8) Add the correct amount of oil through the
filler hole. Put back the filler cap and the
dipstick. NOTICE: Overfilling the oil
could cause leakage or damage. If the
oil level is above the upper level mark,
drain until the level meets the speci-
fied capacity.
[ECM01851]
83
Maintenance
TIP:
1
32
Recommended engine oil:
YAMALUBE 4 or 4-stroke outboard
motor oil
Engine oil quantity (without oil filter
replacement):
3.0 L (3.17 US qt, 2.64 Imp.qt)
Engine oil quantity (with oil filter replacement):
3.2 L (3.38 US qt, 2.82 Imp.qt)
(9) Leave the outboard motor for 5-10 minu-
tes.
(10) Remove the oil dipstick and wipe it
clean.
(11) Insert the dipstick and remove it again.
Be sure to completely insert the dipstick
into the dipstick guide, otherwise the oil
level measurement will be incorrect.
(12) Recheck the oil level using the dipstick to
be sure the level falls between the upper
and lower marks. Consult your Yamaha
dealer if the oil level is out of specified
level.
problem could cause severe engine
damage. Consult your Yamaha dealer
if the problem cannot be located and
corrected.
[ECM01623]
(14) Install the top cowling.
(15) Dispose of used oil according to local
regulations.
For more information on the disposal of
used oil, consult your Yamaha dealer.
Change the oil more often when operating
the engine under adverse conditions such
as extended trolling.
EMU48110
Replacing the engine oil filter
EWM00761
Avoid draining the engine oil immediate-
ly after stopping the engine. The oil is
hot and should be handled with care to
avoid burns.
Be sure the outboard motor is securely
fastened to the transom or a stable
stand.
1. Oil dipstick
2. Upper mark
3. Lower mark
(13) Start the engine and make sure that the
low oil pressure-alert indicator remains
off. Also, make sure that there are no oil
leaks. NOTICE: If the low oil pressure-
alert indicator comes on or if there are
oil leaks, stop the engine and find the
cause. Continued operation with a
84
Yamaha recommends you to have a Yamaha
dealer replace the engine oil filter.
If you perform replacement yourself, follow
the procedure below. If you have any questions, please consult a Yamaha dealer.
(1) Drain the engine oil. For further informa-
tion, see page 82.
(2) Place a cloth under the engine oil filter.
(3) Turn the engine oil filter counterclock-
wise and remove it.
TIP:
Wipe up any spilled engine oil.
1
Dispose of the removed engine oil filter in
accordance with local regulations.
(4) Apply engine oil to the O-ring of the en-
gine oil filter.
Maintenance
Engine oil filter:
18 N·m (1.8 kgf·m, 13 lb·ft)
(6) Fill up the engine with engine oil. For fur-
ther information, see page 82.
EMU48060
Why Yamalube
YAMALUBE oil is a Genuine YAMAHA Part
born of the engineers’ passion and belief that
engine oil is an important liquid engine component. We form teams of specialists in the
fields of mechanical engineering, chemistry,
electronics and track testing, and have them
develop the engine together with the oil it will
use. Yamalube oils take full advantage of the
base oil’s qualities and blend in the ideal balance of additives to make sure the final oil
clears our performance standards. Thus,
Yamalube mineral, semisynthetic and synthetic oils have their own distinct characters
and value. Yamaha’s experience gained over
many years of research and development
into oil since the 1960’s helps make
Yamalube the best choice for your Yamaha
engine.
1. O-ring
(5) Turn the engine oil filter clockwise and
tighten it to the specified torque.
EMU29116
Inspecting wiring and connectors
Inspect that each connector is engaged se-
curely.
Inspect that each ground lead is properly
secured.
85
Maintenance
ZMU08109
ZMU08110
ZMU07854
ZMU08131
and remove the clip from the engine shutoff switch. Turn off the battery cut-off
switch if your boat has one.
Do not use your hand to hold the propeller
when loosening or tightening the propeller
nut. Put a wood block between the anti-cavitation plate and the propeller to prevent the
propeller from turning.
Checkpoints
Check each of the propeller blades for ero-
sion from cavitation or ventilation, or other
damage.
Check the propeller shaft for damage.
Check the splines for wear or damage.
Check for fish line tangled around the pro-
peller shaft.
EMU32113
Checking propeller
EWM01882
You could be seriously injured if the engine accidentally starts when you are near
the propeller. Before inspecting, removing, or installing the propeller, place the
shift control in neutral, turn the main
switch to “” (off) and remove the key,
86
Check the propeller shaft oil seal for dam-
age.
Maintenance
3
2
1
5
6
4
3
2
1
5
6
4
EMU42632
Removing propeller
(1) Straighten the cotter pin and pull it out
using a pair of pliers.
(2) Remove the propeller nut, washer, and
spacer. WARNING! Do not use your
hand to hold the propeller when loosening the propeller nut.
1. Cotter pin
2. Propeller nut
3. Washer
4. Spacer
5. Propeller
6. Thrust washer
(3) Remove the propeller, spacer (if
equipped), and thrust washer.
[EWM01891]
ECM00502
Make sure to use a new cotter pin and
bend the ends over securely. Otherwise,
the propeller could come off during operation and be lost.
(1) Apply Yamalube Marine Grease or a cor-
rosion resistant grease to the propeller
shaft.
(2) Install the thrust washer, spacer (if
equipped), and propeller on the propeller
shaft. NOTICE: Make sure to install the
thrust washer before installing the
propeller. Otherwise, the lower case
and propeller boss could be damaged.
[ECM01882]
(3) Install the spacer, washer, and propeller
nut. Tighten the propeller nut to the
specified torque.
EMU42646
Installing propeller
EWM00771
On counter rotation models, be sure to
use a propeller intended for counterclockwise rotation. These propellers are identified with the letter “L” after the size
indication on the propeller. Otherwise the
boat could move in the opposite direction
from that expected.
1. Cotter pin
2. Propeller nut
3. Washer
4. Spacer
5. Propeller
6. Thrust washer
Propeller nut tightening torque:
54 N·m (5.4 kgf·m, 40 lb·ft)
(4) Align the propeller nut slot with the pro-
peller shaft hole. Insert a new cotter pin
in the hole and bend the cotter pin ends.
87
Maintenance
TIP:
TIP:
1
ZMU06956
1
2
1
2
NOTICE: Do not reuse the cotter pin.
Otherwise, the propeller can come off
during operation.
1. Cotter pin
[ECM01892]
If the propeller nut slot does not align with the
propeller shaft hole after tightening the propeller nut to the specified torque, tighten the
nut further to align the slot with the hole.
EMU47100
Changing gear oil
EWM00801
Be sure the outboard motor is securely
fastened to the transom or a stable
stand. You could be severely injured if
the outboard motor falls on you.
Never get under the lower unit while it is
tilted, even when the tilt support lever or
knob is locked. Severe injury could occur if the outboard motor accidentally
falls.
the screw is normal. Simply remove
them. NOTICE: If there is an excessive
quantity of metal particles on the
magnetic gear oil drain screw, this
can indicate lower unit problem. Con-
sult your Yamaha dealer.
1. Gear oil drain screw
2. Gasket
[ECM01901]
Always use new gaskets. Do not reuse the removed gaskets.
(4) Remove the oil level plug and gasket to
allow the oil to drain completely.
NOTICE: Check the used gear oil after
it has been drained. If the gear oil is
milky or contains water or a large
amount of metal particles, the gear
case may be damaged. Have a
Yamaha dealer check and repair the
outboard motor.
[ECM00714]
(1) Tilt the outboard motor so that the gear
oil drain screw is at the lowest point possible.
(2) Place a suitable container under the gear
case.
(3) Remove the gear oil drain screw and
gasket. The screw is magnetic so a small
quantity of metal particles on the end of
88
1. Gasket
Maintenance
TIP:
TIP:
TIP:
ZMU08122
2. Oil level plug
For disposal of used oil, consult your Yamaha
dealer.
(5) Put the outboard motor in a vertical posi-
tion. Using a flexible or pressurized filling
device, inject the gear oil into the gear oil
drain screw hole.
Recommended gear oil:
YAMALUBE outboard gear oil or Hypoid gear oil
Recommended gear oil grade:
SAE 90 API GL-4 / SAE 80W API GL5 / SAE 90 API GL-5
Gear oil quantity:
0.715 L (0.756 US qt, 0.629 Imp.qt)
(LF115B)
0.760 L (0.803 US qt, 0.669 Imp.qt)
(F115B, F130A)
(7) Put a new gasket on the gear oil drain
screw. Insert and tighten the gear oil
drain screw to the specified torque.
Apply a light coat of gear oil to the gear oil
drain screw thread and gasket before installation.
Tightening torque:
7 N·m (0.7 kgf·m, 5.2 lb·ft)
EMU29318
Inspecting and replacing anode(s)
Yamaha outboard motors are protected from
corrosion by sacrificial anodes. Inspect the
external anodes periodically. Remove scales
from the surfaces of the anodes. Consult a
Yamaha dealer for replacement of external
anodes.
ECM00721
Do not paint anodes, as this would render
them ineffective.
(6) Put a new gasket on the oil level plug.
When the oil begins to flow out of the oil
level plug hole, insert and tighten the oil
level plug to the specified torque.
Apply a light coat of gear oil to the oil level
plug thread and gasket before installation.
Tightening torque:
7 N·m (0.7 kgf·m, 5.2 lb·ft)
89
Maintenance
TIP:
1
1
1. Anode
Inspect ground leads attached to external anodes on equipped models. Consult a
Yamaha dealer for inspection and replace-
ment of internal anodes attached to the power unit.
EMU29324
Checking battery (for electric start
models)
EWM01903
The procedure for checking the battery varies
for different batteries. This procedure contains typical checks that apply to many batteries, but you should always refer to the
battery manufacturer’s instructions.
ECM01921
A poorly maintained battery will quickly
deteriorate.
(1) Check the electrolyte level.
(2) Check the battery’s charge. If your boat
is equipped with the digital speedome-
ter, the voltmeter and low battery alert
functions will help you monitor the bat-
tery’s charge. If the battery needs charg-
ing, consult your Yamaha dealer.
(3) Check the battery connections. They
should be clean, secure, and covered by
an insulating cover. WARNING! Bad
connections can produce shorting or
arcing and cause an explosion.
[EWM01913]
Battery electrolyte is poisonous and caustic, and batteries generate explosive hydrogen gas. When working near the
battery:
Wear protective eye gear and rubber
gloves.
Do not smoke or bring any other source
of ignition near the battery.
90
EMU29335
Connecting the battery
EWM00573
Mount the battery holder securely in a dry,
well-ventilated, vibration-free location in
the boat. Install a fully charged battery in
the holder.
Maintenance
ZMU01811
1
2
3
ECM01125
Do not reverse the battery cables. Otherwise, the electrical parts could be damaged.
(1) Make sure the main switch (on applica-
ble models) is “” (off) before working
on the battery.
(2) Connect the red battery cable to the
POSITIVE (+) terminal first. Then connect
the black battery cable to the NEGATIVE
(-) terminal.
1. Red cable
2. Black cable
3. Battery
(3) The electrical contacts of the battery and
cables must be clean and properly connected, or the battery will not start the
engine.
(3) Disconnect the positive cable(s) and re-
move the battery from the boat.
(4) Clean, maintain, and store the battery
according to the manufacturer’s instruc-
tions.
EMU29372
Disconnecting the battery
(1) Turn off the battery cut-off switch (if
equipped) and main switch. NOTICE: If
they are left on, the electrical system
can be damaged.
(2) Disconnect the negative cable(s) from
the negative (-) terminal. NOTICE: Al-
ways disconnect all negative (-) cables
first to avoid a short circuit and damage to the electrical system.
[ECM01931]
[ECM01941]
91
Trouble Recovery
EMU47140
Troubleshooting
This section describes the likely causes and
remedies for problems, such as those in the
fuel, compression, and ignition systems, poor
starting, and loss of power. Please note that
all of the items in this section may not apply
to your model.
If your outboard motor requires repair, bring
it to a Yamaha dealer.
If the engine trouble-alert indicator is blinking,
consult your Yamaha dealer.
Starter will not operate.
Q. Is remote control lever in gear?
A. Shift to neutral.
Q. Is battery capacity low or weak?
A. Check battery condition. Use battery of
recommended capacity.
Q. Are battery connections corroded or
loose?
A. Tighten battery cables and clean battery
terminals.
Q. Is fuse for starter relay or electric circuit
blown?
A. Check for cause of electric overload and
repair. Replace fuse with one of correct amperage.
Q. Are starter components malfunctioning?
A. Have serviced by a Yamaha dealer.
Engine will not start (starter operates).
Q. Is clip on engine shut-off cord (lanyard) installed?
A. Install clip to engine shut-off switch.
A. Fill tank with clean, fresh fuel.
Q. Is fuel contaminated or stale?
A. Fill tank with clean, fresh fuel.
Q. Is fuel filter clogged?
A. Clean or replace fuel filter.
Q. Is starting procedure incorrect?
A. See page 55.
Q. Is fuel pump malfunctioning?
A. Have serviced by a Yamaha dealer.
Q. Are spark plugs fouled or of incorrect type?
A. Inspect spark plugs. Clean or replace with
recommended type.
Q. Are spark plug caps fitted incorrectly?
A. Check and re-fit caps.
Q. Are ignition parts malfunctioning?
A. Have serviced by a Yamaha dealer.
Q. Is ignition wiring damaged or poorly connected?
A. Inspect wires for breaks and wear. Have
connections tightened and broken or worn
wires replaced by a Yamaha dealer.
Q. Are engine inner parts damaged?
A. Have serviced by a Yamaha dealer.
Engine idles irregularly or stalls.
Q. Are spark plugs fouled or of incorrect type?
A. Inspect spark plugs. Clean or replace with
recommended type.
Q. Is fuel tank empty?
92
Q. Is fuel system clogged?
Trouble Recovery
A. Inspect for pinched or kinked fuel line or
other obstructions in fuel system.
Q. Is fuel contaminated or stale?
A. Fill tank with clean, fresh fuel.
Q. Is fuel filter clogged?
A. Clean or replace fuel filter.
Q. Are ignition parts malfunctioning?
A. Have serviced by a Yamaha dealer.
Q. Has alert system activated?
A. Find and correct cause of alert.
Q. Is spark plug gap incorrect?
A. Replace spark plug.
Q. Is ignition wiring damaged or poorly connected?
A. Inspect wires for breaks and wear. Have
connections tightened and broken or worn
wires replaced by a Yamaha dealer.
Q. Is specified engine oil not being used?
A. Inspect engine oil and replace with specified type.
Q. Is thermostat clogged or malfunctioning?
A. Have serviced by a Yamaha dealer.
Q. Is fuel pump malfunctioning?
A. Have serviced by a Yamaha dealer.
Q. Is fuel tank air vent restricted or clogged?
A. Remove obstruction.
Q. Is outboard motor angle too high?
A. Return to normal operating position.
Q. Is fuel joint connection incorrect?
A. Connect correctly.
Q. Is throttle cable adjustment incorrect?
A. Have serviced by a Yamaha dealer.
Q. Is battery cable disconnected?
A. Connect securely.
Alert buzzer sounds or indicator lights.
Q. Is cooling system clogged?
A. Inspect cooling water inlet for obstructions.
Q. Is low oil pressure-alert indicator on or
blinking?
A. Have serviced by a Yamaha dealer.
Q. Is heat range of spark plugs incorrect?
A. Inspect spark plugs and replace with recommended type.
Q. Is specified engine oil not being used?
A. Inspect engine oil and replace with specified type.
Q. Is engine oil contaminated or deteriorated?
A. Replace engine oil with specified type.
Q. Is oil filter clogged?
A. Have serviced by a Yamaha dealer.
Q. Is oil pump malfunctioning?
A. Have serviced by a Yamaha dealer.
Q. Is load on boat improperly distributed?
A. Distribute load to place boat on an even
plane.
Q. Is thermostat or water pump malfunctioning?
93
Trouble Recovery
A. Have serviced by a Yamaha dealer.
Q. Is there excess water in fuel filter?
A. Drain fuel filter.
Engine power loss.
Q. Is propeller damaged?
A. Have propeller repaired or replaced.
Q. Is propeller pitch or diameter incorrect?
A. Install correct propeller to operate outboard motor at its recommended speed
(r/min) range.
Q. Is outboard motor mounted at incorrect
height on transom?
A. Have outboard motor adjusted to proper
transom height.
Q. Has alert system activated?
A. Find and correct cause of alert.
Q. Is boat bottom fouled with marine growth?
A. Clean boat bottom.
Q. Are spark plugs fouled or of incorrect type?
A. Inspect spark plugs. Clean or replace with
recommended type.
Q. Are weeds or other foreign material tangled on gear housing?
A. Remove foreign material and clean lower
unit.
A. Clean or replace fuel filter.
Q. Is fuel contaminated or stale?
A. Fill tank with clean, fresh fuel.
Q. Is spark plug gap incorrect?
A. Replace spark plug.
Q. Is ignition wiring damaged or poorly connected?
A. Inspect wires for breaks and wear. Have
connections tightened and broken or worn
wires replaced by a Yamaha dealer.
Q. Are electrical parts malfunctioning?
A. Have serviced by a Yamaha dealer.
Q. Is specified fuel not being used?
A. Replace fuel with specified type.
Q. Is specified engine oil not being used?
A. Replace engine oil with specified type.
Q. Is thermostat clogged or malfunctioning?
A. Have serviced by a Yamaha dealer.
Q. Is fuel tank air vent restricted or clogged?
A. Remove obstruction.
Q. Is fuel pump malfunctioning?
A. Have serviced by a Yamaha dealer.
Q. Is fuel joint connection incorrect?
A. Connect correctly.
Q. Is fuel system clogged?
A. Inspect for pinched or kinked fuel line or
other obstructions in fuel system.
Q. Is fuel filter clogged?
94
Q. Is heat range of spark plugs incorrect?
A. Inspect spark plugs and replace with recommended type.
Q. Is engine not responding properly to remote control lever position?
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