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115C
OWNER’S MANUAL
130C
150C
V150C
U.S.A.Edition
LIT-18626-05-45
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EMU01449
TO THE OWNER
Thank you for choosing 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.
The Safety Alert Symbol means
ATTENTION! BECOME ALERT!
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YOUR SAFETY IS INVOLVED!
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A CAUTION indicates special precautions
that must be taken to avoid damage to
the outboard motor.
NOTE:
A NOTE provides key information to make
procedures easier or clearer.
* Yamaha continually seeks advance-
ments in product design and quality.
Therefore, while this manual contains
the most current product information
available at the time of printing, there
may be minor discrepancies between
your machine and this manual. If there
is any question concerning this manual,
please consult your Yamaha dealer.
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Failure to follow WARNING instructions
could result in severe injury or death to
the machine operator, a bystander, or a
person inspecting or repairing the out-
board motor.
EMU01446
115C, 130C, 150C, V150C
OWNER'S MANUAL
©2003 by Yamaha Motor Corporation, USA
1st Edition, March 2003
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Corporation, USA
is expressly prohibited.
Printed in Japan
P/N LIT-18626-05-45
NOTE:
The 115TR, 150TR and their standard
accessories are used as a base for the
explanations and illustrations in this manual. Therefore, some items may not apply
to every model.
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EMA20010
CONTENTS
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GENERAL INFORMATION
BASIC COMPONENTS
OPERATION
MAINTENANCE
1
2
3
4
TROUBLE RECOVERY
INDEX
READ THIS OWNER’S MANUAL CAREFULLY
BEFORE OPERATING YOUR OUTBOARD MOTOR.
5
6
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EMB00010
Chapter 1
GENERAL
INFORMATION
IDENTIFICATION NUMBERS
RECORD ....................................................1-1
Outboard motor serial number...........1-1
Key number...........................................1-1
EMISSION CONTROL INFORMATION...1-2
SAFETY INFORMATION..........................1-3
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1
2
IMPORTANT LABELS ..............................1-5
BASIC BOATING RULES .........................1-6
FUELING INSTRUCTIONS.....................1-10
Gasoline ..............................................1-11
Engine oil ............................................1-11
BATTERY REQUIREMENT ....................1-12
PROPELLER SELECTION .......................1-12
START-IN-GEAR PROTECTION ............1-14
3
4
5
6
1
401012
904011*
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YAMAHA
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EMU00005
IDENTIFICATION NUMBERS
RECORD
EMU00007
OUTBOARD MOTOR SERIAL
NUMBER
YAMAHA MOTOR CO., LTD.
MADE IN JAPAN
PAYS D'ORIGINE JAPON
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.
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1 Outboard motor serial number
EMU00008
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
1-1
******
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EMISSION CONTROL INFORMATION
ENGINE FAMILY :
THIS ENGINE CONFORMS TO 2001 U.S. EPA REGULATIONS FOR MARINE SI ENGINES.
REFER TO THE OWNERS MANUAL FOR MAINTENANCE SPECIFICATIONS AND ADJUSTMENTS.
FELs :
SPARK PLUG :
DISPLACEMENT :
ADVERTISED POWER :
IDLE SPEED :
SPARK PLUG GAP (mm) :
FUEL : GASOLINE
VALVE LASH (mm) :
IN EX
cm
kw
g/kw-hr
rpm IN NEUTRAL
3
Manufactured:
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V6
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EMU01385
EMISSION CONTROL
INFORMATION
EMU01386
NORTH AMERICAN MODELS
This engine conforms to U.S. Environmental Protection Agency (EPA) regulations for marine SI engines. See the label
affixed to your engine for details.
Approval label of Emission control
certificate
This label is attached to the bottom cowling.
1 Emission control information label
******
Existing Technology ; N/A
Manufactured date label
This label is attached to the clamp bracket
or the swivel bracket.
2 Manufactured date label
1-2
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EMU00917
SAFETY
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INFORMATION
8 Before mounting or operating the out-
board motor, read this entire manual.
Reading it should give you an understanding of the motor and its operation.
8 Before operating the boat, read any
owner’s or operator’s manuals supplied
with it and all labels. Be sure you under-
stand each item before operating.
8 Do not overpower the boat with this
outboard motor. Overpowering the
boat could result in loss of control. The
rated power of the outboard should be
equal to or less than the rated horse-
power capacity of the boat. If the rated
horsepower capacity of the boat is
unknown, consult the dealer or boat
manufacturer.
8 Do not modify the outboard. Modifica-
tions could make the motor unfit or
unsafe to use.
8 Never operate after drinking alcohol or
taking drugs. About 50% of all boating
fatalities involve intoxication.
8 Have an approved personal flotation
device (PFD) on board for every occu-
pant. It is a good idea to 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.
8 Gasoline is highly flammable, and its
vapors are flammable and explosive.
Handle and store gasoline carefully.
Make sure there are no gas fumes or
leaking fuel before starting the engine.
8 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.
8 Check throttle, shift, and steering for
proper operation before starting the
engine.
8 Attach the engine stop switch lanyard
to a secure place on your clothing, or
your arm or leg while operating. If you
accidentally leave the helm, the lanyard
will pull from the switch, stopping the
engine.
8 Know the marine laws and regulations
where you will be boating - and obey
them. Refer to “RULES OF THE ROAD”
section for basic boating rules.
8 Stay informed about the weather.
Check weather forecasts before boating.
Avoid boating in hazardous weather.
8 Tell someone where you are going:
leave a Float Plan with a responsible
person. Be sure to cancel the Float Plan
when you return.
8 Use common sense and good judgment
when boating. Know your abilities, and
be sure you understand how your boat
handles under the different boating
conditions you may encounter. Operate
within your limits, and the limits of your
boat. Always operate at safe speeds,
and keep a careful watch for obstacles
and other traffic.
8 Always watch carefully for swimmers
during the engine operation.
8 Stay away from swimming areas.
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8 When a swimmer is in the water near
you shift into neutral and shut off the
engine.
8 Be informed about boating safety. Addi-
tional publications and information can
be obtained from many organizations,
including the following:
United States Coast Guard
Consumer Affairs Staff (G-BC)
Office of Boating, Public, and Consumer
Affairs
U.S. Coast Guard Headquarters
Washington, D.C. 20593-0001
Boating Safety Hotline: 1-800-368-5647
National Marine Manufacturers
Association (NMMA)
401 N. Michigan Ave.
Chicago, Il 60611
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Marine Retailers Association of America
155 N. Michigan Ave.
Chicago, Il 60601
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001777
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ENGINE OIL ONLY
WARNING
6E5-13437-43
Pour the engine oil into this oil tank, not gasoline.
RECOMMENDED OIL:
YAMALUBE 2 STROKE OUTBOARD OIL or an equivalent TC-W3 certified outborad oil.
Do not add gasoline to the oil tank.
Fire or explosion could result.
OIL TANK
CAPACITY:10.5 LITERS
11.1 U.S. qt.
9.2 IMP. qt.
WARNING
¡Be sure shift control is in neutral
before starting engine. (except 2HP)
¡Do not touch or remove electrical parts
when starting or during operation.
¡Keep hands,hair,and clothes away from flywheel
and other rotating parts while engine is running.
6A1-83625-41
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Location
V4
V6
EMU00140¯
IMPORTANT LABELS
WARNING LABELS
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001778
2
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EMB40010
BASIC BOATING RULES
(Rules of the road)
Just as there are rules which apply when
you are driving on streets and high ways,
there are waterway rules which apply when
you are driving your boat. These rules are
used internationally, and are also enforced
by the United States Coast Guard and local
agencies. You should be aware of these
rules, and follow them whenever you
encounter another vessel on the water.
Several sets of rules prevail according to
geographic location, but are all basically the
same as the International Rules of the
Road. The rules presented here in your
Owner’s Manual are condensed, and have
been provided for your convenience only.
Consult your local U.S. Coast Guard Auxil-
iary or Department of Motor Vehicles for a
complete set of rules governing the waters
in which you will be using your boat.
STEERING AND SAILING RULES
AND SOUND SIGNALS
Whenever two vessels on the water meet
one another, one vessel has the right-of-
way; it is called the “stand-on” vessel. The
vessel which does not have the right-of-way
is called the “give-way” or “burdened” vessel. These rules determine which vessel
has the right-of-way, and what each vessel
should do.
Stand-on Vessel
The vessel with the right-of-way has the
duty to continue its course and speed,
except to avoid an immediate collision.
When you maintain your direction and
speed, the other vessel will be able to
determine how best to avoid you.
Give-way Vessel
The vessel which does not have the rightof-way has the duty to take positive and
timely action to stay out of the way of the
Stand-On vessel. Normally, you should not
cross in front of the vessel with the right-ofway. You should slow down or change
directions briefly and pass behind the other
vessel. You should always move in such a
way that the operator of the other vessel
can see what you are doing.
“The general prudential rule”
This rule is called Rule 2 in the International Rules and says,
‘In obeying and construing these rules
due regard shall be had to all dangers of
navigation and collision, and to any special circumstances, which may render a
departure from the above rules necessary in order to avoid immediate danger.’
In other words, follow the standard rules
except when a collision will occur unless
both vessels try to avoid each other. If that
is the case, both vessels become “GiveWay” vessels.
1-6
102045
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RULES WHEN ENCOUNTERING
VESSELS
There are three main situations which you
may encounter with other vessels which
could lead to a collision unless the Steering
Rules are followed:
Meeting
(you are approaching another vessel
head-on)
Crossing
(you are travelling across the other ves-
sel’s path)
Overtaking
(you are passing or being passed by
another vessel)
In the following illustration, your boat is in
the center. You should give the right-of-way
to any vessels shown in white area (you are
the Give-Way vessel). Any vessels in the
shaded area must yield to you (they are the
Give-Way vessels). Both you and the meet-
ing vessel must alter course to avoid each
other.
other vessel on your port (left) side. This
rule doesn’t apply if both of you will clear
one another if you continue on your set
course and speed.
102044
Crossing
When two power driven vessels are crossing each other’s path close enough to run
the risk of collision, the vessel which has
the other on the starboard (right) side must
keep out of the way of the other. If the other
vessel is on your right, you must keep out of
its way; you are the Give-Way vessel. If the
other vessel is on your port (left) side,
remember that you should maintain course
and direction, provided the other vessel
gives you the right-of-way as it should.
Meeting
If you are meeting another power vessel
head on, and are close enough to run the
risk of collision, neither of you has the rightof-way! Both of you should alter course to
avoid an accident. You should keep the
102046
Overtaking
If you are passing another vessel, you are
the “Give-Way” vessel. This means that the
other vessel is expected to maintain its
course and speed. You must stay out of its
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way until you are clear of it. Likewise, if
another vessel is passing you, you should
maintain your speed and direction so that
the other vessel can steer itself around you.
OTHER SPECIAL SITUATIONS
There are three other rules you should be
aware of when driving your boat around
other vessels.
Narrow Channels and Bends
When navigating in narrow channels, you
should keep to the right when it is safe and
practical to do so. If the operator of a
power-driven vessel is preparing to go
around a bend that may obstruct the view of
other water vessels, the operator should
sound a prolonged blast on the whistle (4 to
6 seconds). If another vessel is around the
bend, it too should sound the whistle. Even
if no reply is heard, however, the vessel
should still proceed around the bend with
caution. If you navigate such waters with
your boat, you will need to carry a portable
air horn, available from local marine supply
stores.
Fishing Vessel Right-of-way
All vessels which are fishing with nets, lines
or trawls are considered to be“fishing ves-
sels” under the International Rules. Vessels
with trolling lines are not considered fishing
vessels. Fishing vessels have the right-of-
way regardless of position. Fishing vessels
cannot, however, impede the passage of
other vessels in narrow channels.
Sailing Vessel Right-of-way
Sailing vessels should normally be given
the right-of-way. The exceptions to this are:
1. When the sailing vessel is overtaking
the power-driven vessel, the power-driven vessel has the right-of-way.
2. Sailing vessels should keep clear of any
fishing vessel.
3. In a narrow channel, a sailing vessel
should not hamper the safe passage of
a power-driven vessel which can navigate only in such a channel.
Reading Buoys and Other Markers
The waters of the United states are marked
for safe navigation by the lateral system of
buoyage. Simply put, buoys and markers
have an arrangement of shapes, colors,
numbers and lights to show which side of
the buoy a boater should pass on when
navigating in a particular direction. The
markings on these buoys are oriented from
the perspective of being entered from seaward (the boater is going towards the port).
This means that red buoys are passed on
the starboard (right) side when proceeding
from open water into port, and black buoys
are to port (left) side. When navigating out
of port, your position with respect to the
buoys should be reversed; red buoys
should be to port and black buoys to starboard.
Many bodies of water used by boaters are
entirely within the boundaries of a particular
state. The Uniform State Waterway Marking
System has been devised for these waters.
This system uses buoys and signs with distinctive shapes and colors to show regulatory or advisory information. These markers
are white with black letters and orange
boarders. They signify speed zones,
restricted areas, danger areas, and general
information.
1-8
1
1
A
1
1
Proceeding toward head
of navigation from seaward
CAN BUOY
Odd number. Leave to port.
OR
SECONDARY CHANNEL BUOYS
STARTS NEW NUMBERING SYSTEM
old new
C " 1
"
NUN BUOY
Even number. Leave to starboard
N
"
2
"
BUOY
COLOR CODE
BLACK
RED
GREEN
"
A
"
"
2
"
"
1
"
"
3
"
"
4
"
"
5
"
"
7
"
N
"
2
"
"
6
"
C
"
1
"
RB
"
L
"
RG
"
L
"
or
SECONDARY CHANNEL
MAIN CHANNEL
old
new
2
2
2
A
L
L
Odd number. increasing toward head of naviga-
MAIN CHANNEL BUOYS
"
1
" "
3
" "
5
" "
7
"
tion.Leave to port (left) proceeding upstream.
LIGHTED BUOY (Port Hand)`
White Light
Green Light
old
new
old
new
old
new
LIGHTED BUOY (Starboard Hand)`
"
2
" "
4
" "
6
"
Even number,increasing toward head of navigation. Leave to starboard (right) proceeding upstream.
White Light Red Light
"
A
"
LIGHTED SAFE WATER BUOY
No number. Marks midchannel, pass on either
side. Letter has no lateral significance, used for
No number. Topmost band red
-
preferred
Top Mark
White Light
White Light
OR
OR
LIGHTED PREFERRED CHANNEL TO
RB
"
L
"
RG
"
L
"
PORT BUOY
identification and location purposes.
channel is to left of buoy. Letter has no lateral
significance, used for identification and location
purposes.
Red Light
Red or
OR
102052
No change
White Light
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Remember, markings may vary by geographic location. Always consult local boating authorities before driving your boat in
unfamiliar waters.
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EMU00016
FUELING INSTRUCTIONS
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GASOLINE AND ITS VAPORS ARE HIGHLY FLAMMABLE AND EXPLOSIVE!
8 Do not smoke when refueling, and
keep away from sparks, flames, or
other sources of ignition.
8 Stop engine before refueling.
8 Refuel in a well-ventilated area. Refuel
portable fuel tanks off the boat.
8 Take care not to spill gasoline. If gaso-
line spills, wipe it up immediately with
dry rags.
8 Do not overfill the fuel tank.
8 Tighten the filler cap securely after
refueling.
8 If you should swallow some gasoline
inhale a lot of gasoline vapor, or get
gasoline in your eyes, get immediate
medical attention.
8 If any gasoline spills onto your skin,
immediately wash with soap and
water. Change clothing if gasoline spills
on it.
8 Touch the fuel nozzle to the filler open-
ing or funnel to help prevent electrostatic sparks.
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Use only new clean gasoline which has
been stored in clean containers and is not
contaminated with water or foreign matter.
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EMU01804
GASOLINE
Recommended gasoline:
Regular unleaded gasoline with a
minimum octane rating of 86 (Pump
Octane Number) = (R+M)/2
If knocking or pinging occurs, use a different brand of gasoline or premium unleaded fuel.
EMU00027
Gasohol
There are two types of gasohol: gasohol
containing ethanol and that containing
methanol. Gasohol containing ethanol
can be used if ethanol content does not
exceed 10% and the fuel meets minimum
octane ratings. Gasohol containing
methanol is not recommended by Yamaha because it can cause fuel system damage or engine performance problems.
EMU19570
ENGINE OIL
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Recommended engine oil:
YAMALUBE 2 STROKE OUTBOARD
OIL
Use Yamalube 2-M outboard oil. If
Yamalube 2-M is not available, use only
another outboard motor manufacturer’s
factory-brand oil with TC-W3 rating.
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Serious engine damage can result from
the use of lower quality oil, including
some commonly available oil brands with
“ TC-W3” on their label. To avoid the risk,
use only Yamalube 2-M or, if necessary,
another outboard motor manufacturer’s
factory-brand TC-W3 oil.
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EMU01775
BATTERY REQUIREMENT
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Do not use a battery that does not meet
the specified capacity. If a battery which
does not meet specifications is used, the
electric system could perform poorly or
be overloaded, causing electric system
damage.
For electric start models, choose a battery
which meets the following specifications.
EMU01860
Minimum cold cranking amps
(CCA/SAE): 380 amps at -18°C (-0.4°F)
Minimum marine cranking amps
(MCA/ABYC): 502 amps at 0°C (32°F)
Minimum reserve capacity (RC/SAE):
124 minutes
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EMU01395
PROPELLER SELECTION
The performance of your outboard motor
will be critically affected by your choice of
propeller, as an incorrect choice could
adversely affect performance and could
also seriously damage the motor. Engine
speed depends on the propeller size and
boat load. If engine speed is too high or
too low for good engine performance,
this will have an adverse effect on the
engine.
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602022
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Yamaha outboard motors are fitted with
propellers chosen to perform well over a
range of applications, but there may be
uses where a propeller with a different
pitch would be more appropriate. For a
greater operating load, a smaller-pitch
propeller is more suitable as it enables
the correct engine speed to be maintained. Conversely, a larger-pitch propeller is more suitable for a smaller operating load.
Yamaha dealers stock a range of propellers, and can advise you and install a
propeller on your outboard that is best
suited to your application.
NOTE:
At full throttle and under a maximum
boat load, the engine’s rpm should be
within the upper half of the full throttle
operating range, as listed in “SPECIFICATIONS” on page 4-1. Select a propeller
which fulfills this requirement.
If operating under conditions which allow
the engine’s rpm to rise above the maximum recommended range (such as light
boat loads), reduce the throttle setting to
maintain the rpm in the proper operating
range.
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1 Propeller diameter (in inches)
2 Propeller pitch (in inches)
3 Type of propeller (propeller mark)
Refer to the section “CHECKING PROPELLER” for instructions on propeller
removal and installation.
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EMU01209
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 Neutral.
Always select Neutral before starting the
engine.
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-MEMO-
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EMC00010
Chapter 2
BASIC COMPONENTS
MAIN COMPONENTS..............................2-1
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1
OPERATIONS OF CONTROLS AND
OTHER FUNCTIONS ................................2-3
Remote control .....................................2-3
Choke knob ...........................................2-8
Trim tab .................................................2-8
Power trim / tilt switch .........................2-9
Digital tachometer..............................2-10
Digital speedometer...........................2-13
Fuel management meter ...................2-16
Tilt support lever ................................2-20
Top cowling lock levers .....................2-20
Top cowling release lever .................2-20
Flushing device...................................2-21
WARNING SYSTEM ..............................2-22
Overheat warning...............................2-22
Oil level warning/Oil filter clogging
warning ...............................................2-23
2
3
4
5
6
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!3
TRIPTRIP TIMETIME BATTBATT
Km/hKm/h
knot
mph
km
mile
SPEEDSPEED
YAMAHA
setset
modemode
!5
!8
!0
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!4
!6
!7
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EMU01206
MAIN COMPONENTS
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1 Power trim and tilt switch
* 2 Flushing device
3 Tilt support lever
4 Anti-cavitation plate
5 Trim tab (Anode)
* 6 Propeller
7 Cooling water inlet
8 Anode
9 Clamp bracket
0 Power trim and tilt unit
q Cowling release lever*1/
Cowling lock lever*2
w Choke knob
e Top cowling
r Cooling water pilot hole
* t Remote control box (Side mount type)
* y Digital tachometer
* u Digital speedmeter
*1.V4
*2.V6
* May not be exactly as shown; also may not
be included as standard equipment on all
models.
* i Remote oil tank
2-1
TRIPTRIP TIMETIME BATTBATT
Km/hKm/h
knotknot
mph
km
mile
SPEEDSPEED
YAMAHA
setset
modemode
!5
!6
!8
!7
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!0
!1
!2
!3
!4
!1
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EMU01206
MAIN COMPONENTS
V150
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1 Power trim and tilt switch
2 Flushing device
3 Tilt support lever
4 Anti-cavitation plate
5 Trim tab (Anode)
* 6 Propeller
7 Cooling water inlet
8 Anode
9 Clamp bracket
0 Power trim and tilt unit
q Cowling lock lever
w Choke knob
e Top cowling
r Cooling water pilot hole
* t Remote control box (Side mount type)
* y Digital tachometer
* u Digital speedmeter
* i Remote oil tank
* May not be exactly as shown; also may not
be included as standard equipment on all
models.
2-2
000200
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EMC20010
OPERATIONS OF CONTROLS
OTHER FUNCTIONS
EMU00096
REMOTE CONTROL
Both the shifter and the throttle are actuated by the remote control lever. In addition, this control also has the electrical
switches.
1 Remote control lever
2 Neutral interlock trigger
3 Neutral throttle lever
4 Main switch
5 Engine stop lanyard switch
6 Power trim/tilt switch
7 Throttle friction adjusting screw
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701031
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EMC50010*
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.
1 Neutral
2 Forward
3 Reverse
4 Shift
5 Fully closed
6 Throttle
7 Fully open
EMC50110
Neutral interlock trigger
UP
DN
To shift out of Neutral, the neutral interlock trigger of the remote control lever
must first be pulled up.
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EMC50210
Neutral throttle lever
701034**
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701033*
To open the throttle without shifting into
either Forward or Reverse, place the
remote control lever in the Neutral position and lift the neutral throttle lever.
NOTE:
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.
1 Fully open
2 Fully closed
2-4
ON
STARTOFF
701021
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EMC48110
Main switch
The main switch controls the ignition system; its operation is described below.
8 OFF
Electrical circuits switched off.
(The key can be removed.)
8 ON
Electrical circuits switched on.
(The key cannot be removed.)
8 START
Starter-motor will turn and start engine.
(When the key is released, it returns automatically to “ON”.)
EMC50310
Choke switch
While the main switch is being pressed in
at “ON” or “START”, the choke system
will switch on, to supply a rich mixture
required to start the engine. (When the
key is released, it will switch off automatically.)
701055
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2-5
000569
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EMC28210
Engine stop lanyard switch
The lock-plate on the end of the lanyard
must be attached to the engine stop
switch for the engine to run. The lanyard
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 lanyard will pull out
the lock plate, stopping ignition to the
engine. This will prevent the boat from
running away under power.
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8 Attach the engine stop switch lanyard
to a secure place on your clothing, your
arm or leg while operating.
8 Do not attach the lanyard to clothing
that could tear loose. Do not route the
lanyard in such a way that it could
become entangled, preventing it from
functioning.
8 Avoid accidentally pulling the lanyard
during normal operation. Loss of
engine power means the loss of most
steering control. Also, without engine
power, the boat could slow rapidly.
This could cause people and objects in
the boat to be thrown forward.
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NOTE:
The engine cannot be started with the
lock-plate removed.
1 Lock-plate
2 Lanyard
2-6
UP
DN
701034**
UP
DN
701035
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EMU01331
Power Trim/Tilt Switch
The power trim/tilt adjusts the motor
angle in relation to the transom. The
power trim/tilt switch is located on the
remote control lever grip. Pushing the
switch “UP” trims the motor up, then tilts
the motor up. Pressing the switch “DN”
tilts the motor down and trims the motor
down. When the switch button is
released, the motor will stop in its current
position.
NOTE:
Refer to the sections “ADJUSTING TRIM
ANGLE” and “TILTING UP/DOWN” in
Chapter 3 for instructions on usage.
EMU01155
Throttle Friction Adjusting Screw
A friction device in the remote control box
provides adjustable resistance to movement of the remote control lever, and can
be set according to operator preference.
An adjusting screw is located on the front
of the remote control box.
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Resistance Screw
Increase Turn clockwise
Decrease Turn counterclockwise
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Do not overtighten the friction adjusting
screw. If there is too much resistance, it
may be difficult to move the lever, which
could result in an accident.
2-7
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603014
305033*
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EMC42010
CHOKE KNOB
Pulling out this knob (setting it to ON) supplies a rich mixture required to start the
engine.
NOTE:
The choke knob for remote control model
has the same function as the choke switch
on the remote control box.
EMD04011*
TRIM TAB
The trim tab should be adjusted so that
the steering control can be turned to
either the right or left by applying the
same amount of force.
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An improperly adjusted trim tab may
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.
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1 Trim tab
2 Bolt
3 Cap
Boat tends to veer
To the left
(port side)
To the right
(starboard side)
The rear end of trim tab
Turn the left(port side),
“A” in the figure
Turn the right
(starboard side),
“B” in the figure
cC
The trim tab also serves as an anode to
protect the engine from electroche mical
corrosion.
A
B
603012
Never paint the trim tab as it will become
ineffective as an anode.
2-8
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EMU01125
POWER TRIM/TILT SWITCH
UP
DOWN
302012
The power trim/tilt adjusts the motor
angle in relation to the transom. The
power trim/tilt switch is located on the
side of the bottom engine cowling. Pushing the switch “UP” trims the motor up,
then tilts the motor up. Pressing the
switch “DN” tilts the motor down and
trims the motor down. When the switch
button is released, the motor will stop in
its current position.
w
Use the power trim/tilt switch located on
the bottom engine cowling only when
the boat is at a complete stop with the
engine off. Attempting to use the cowling-mounted power trim/tilt 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.
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NOTE:
Refer to the section “Adjusting Trim
Angle” and “Tilting Up/Down” for instructions on usage.
2-9
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EMU01614
DIGITAL TACHOMETER
This gauge contains the tachometer, trim
e
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y
u
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001078
001082
meter, hour meter, oil level indicator, and
the overheat warning indicator.
1 Tachometer
2 Trim meter
3 Hour meter
4 Oil level indicator
5 Overheat warning indicator
6 Set button
7 Mode button
NOTE:
All segments of the display will light
momentarily after the main switch is
turned on and will return to normal thereafter.
EMU00136
Tachometer
This meter shows the engine speed.
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001049
2-10
001050
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EMU01109
Trim Meter
This meter shows the trim angle of your
outboard motor.
NOTE:
8 Memorize the trim angles that work
best for your boat under different conditions. Adjust the trim angle to the
desired setting by operating the power
trim and tilt switch.
8 If the trim angle of your motor exceeds
the trim operating range, the top segment on the trim meter display will start
to blink.
EMU01620
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.
8 Changing the display format
001087
Pressing the MODE button changes the
display format in the following circular pattern:
Total hours - Trip hours - Display off
8 Resetting the trip hours
Simultaneously pressing the SET and
MODE buttons for more than 1 second
while the trip hours are displayed resets
the trip counter to 0 (zero).
NOTE:
The total number of hours the engine has
been run cannot be reset.
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2-11
001051
q
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EMU00138
Oil-Level Indicator
This indicator shows the engine oil level.
If the oil level falls below the lower limit,
the warning indicator will start to blink.
Refer to the sections “FILLING OIL” and
“OIL LEVEL WARNING” for details.
1 Oil-level indicator
cC
Do not operate the engine without oil.
Serious engine damage will occur.
EMU01553
Overheat Warning Indicator
If the engine temperature rises too high,
the warning indicator will start to blink.
Refer to “OVERHEAT WARNING” for
q
details.
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1 Overheat warning indicator
001052
cC
Do not continue to operate the engine if a
warning device has activated. If necessary, refer to the “TROUBLESHOOTING”
section in this manual. Consult your dealer if the problem cannot be located and
corrected.
2-12
802034
TRIP TIME BATT
Km/h
knot
mph
km
mile
SPEED
YAMAHA
set
mode
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EMD40012
DIGITAL SPEEDOMETER
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YAMAHA
SPEED
TRIP TIME BATT
set
Km/h
knot
mph
km
mile
mode
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r
802016*
This meter contains the speedometer, fuel
meter with warning, trip meter, clock and
voltmeter with warning.
1 Speedometer
2 Fuel meter
3 Trip meter/clock/voltmeter
4 Warning indicator
NOTE:
After the main switch is first turned on, all
portions of the meter come on as a check.
After a few seconds, the meters will
change to normal operation. Watch the
meter when turning on the main switch to
make sure all segments come on.
EMD25110
Speedometer
The meter will show the boat speed.
NOTE:
The speedometer displays km/h, mph, or
knots, depending upon operator preference. Select the desired unit of measurement by setting the selector switch on the
back of the meter. See the illustration for
setting.
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1 Cap
2 Selector switch (For speed unit)
3 Selector switch (For fuel sender)
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802023*
2-13
802024
TRIP TIME BATT
Km/h
knot
mph
km
mile
SPEED
YAMAHA
set
mode
802025
TRIP TIME BATT
Km/h
knot
mph
km
mile
SPEED
YAMAHA
set
mode
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EMU01274
Trip Meter
This meter displays the distance the boat
has traveled since the meter was last
reset.
Repeatedly push and release the “mode”
button until the indicator on the face of
the meter points to “TRIP”. To reset the
trip meter to “0”, press the “set” and
“mode” button together.
NOTE:
8 The trip distance is shown in kilometers
or miles depending upon the unit of
measurement selected for the
speedometer.
8 The trip distance is kept in memory by
battery power. The stored data will be
lost if the battery is disconnected.
EMU01275
Clock
This meter shows the current time.
Repeatedly push and release the “mode”
button until the indicator on the face of
the meter points to “TIME.” To set the
clock, be sure the meter is in the “TIME”
mode. Press the “set” button; the hour
display will begin blinking. Press the
“mode” button until the desired hour is
displayed. Press the “set” button again,
the minute display will begin blinking.
Press the “mode” button until the desired
minute is displayed. Press the “set” button again to start the clock.
NOTE:
The clock operates on battery power. Disconnecting the battery will stop the clock.
Reset the clock after connecting the battery.
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2-14
802031
TRIP TIME BATT
Km/h
knot
mph
km
mile
SPEED
YAMAHA
set
mode
q
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Km/h
knot
mph
km
mile
802032TRIP TIME BATT
Km/h
knot
mph
km
mile
SPEED
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EMD40310
Fuel meter
The fuel level is displayed by eight segments. When all segments are showing,
the fuel is full.
cC
The Yamaha fuel tank sensor is different
from a conventional-type sensor. A
wrong setting of the selector switch on
the meter will give incorrect readings.
Consult Yamaha dealer for correct setting.
NOTE:
The fuel reading can be affected by 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.
EMD40410
Warning indicator
8 Fuel warning
If the fuel level decreases to one segment
the fuel level warning segment 1 begins
blinking.
8 Low battery voltage warning
If battery voltage drops, the display 2 will
be automatically turned on and it begins
blinking.
cC
Do not continue to operate the engine if a
warning device has activated. Refer to
the TROUBLESHOOTING section in this
manual. Consult a Yamaha dealer if the
problem cannot be located and corrected.
2-15
SPEED
TRIP TIME BATT
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802026
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P S
802021TRIP TIME BATT
Km/h
knot
mph
km
mile
SPEED
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EMD42012
FUEL MANAGEMENT METER
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YAMAHA
FUEL MANAGEMENT
Km/L
mpg
ECON SYNCTTL
set
mode
I/h
gph
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Optional equipment
The meter contains the fuel flow meter,
fuel consumption meter, fuel economy
meter, twin engine speed synchronizer,
water separator warning indicator.
1 Fuel flow meter
2 Fuel consumption/Fuel economy
meter/Twin engine speed synchronizer
3 Water separator warning indicator
(Operates only if the sensor has been
installed.)
NOTE:
After the main switch is first turned on, all
portions of the meter come on as a check.
After a few seconds, the meters will
change to normal operation. Watch the
meter when turning on the main switch to
make sure all segments come on.
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FUEL MANAGEMENT
P S
YAMAHA
set
EMD32010
Fuel flow meter
The meter displays fuel flow within one
I/h
gph
hour, at the rate of current engine operation.
ECON SYNCTTL
mode
If twin engines are installed on your boat,
the meter will display total fuel flow of
Port and Starboard side engine. It also
displays PS indication at the same time.
By pressing “set” button, the meter will
display fuel flow of starboard side engine
and S indication.
By pressing “set” button again, the meter
will display fuel flow of port side engine
and P indication.
By pressing “set” button again, the meter
will display total fuel flow.
2-16
P S
gph
I/h
P S
mp
Km
gph
I/h
ECON SYNCTTL
FUEL MANAGEMENT
/L
g
2 65431
ON
(liter)
l/h
(gallon)
gph
q
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NOTE:
8 The meter displays gallon/hour and liter
depending upon operator preference.
Select the desired unit of measurement
by setting the selector switch 1 on the
back of the meter during installation.
8 Fuel consumption meter and Fuel econ-
omy meter will indicate same unit of
measurement.
EMU01276
Fuel Consumption Meter
This meter displays the total amount of
fuel consumed since the meter was last
reset.
Repeatedly push and release the “mode”
button until the indicator on the face of
the meter points to total (“TTL”). To reset
the total fuel consumption to “0”, press
the “set” and “mode” buttons together.
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FUEL MANAGEMENT
ECON SYNCTTL
Km/L
mpg
EMU01277
Fuel Economy
This meter displays the distance per liter
or gallon when cruising for reference use
by the operator.
Repeatedly push and release the “mode”
button until the indicator on the face of
the meter points to “ECON.”
NOTE:
If twin engines are installed on your boat,
the meter will display only the total fuel
economy of both engines.
2-17
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NOTE:
8 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).
8 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 (partially plugged or damaged).
8 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.
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2-18
P S
mpg
Km/L
gph
I/h
ECON SYNCTTL
FUEL MANAGEMENT
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P S
mpg
Km/L
gph
I/h
P S
mpg
Km/L
gph
I/h
ECON SYNCTTL
FUEL MANAGEMENT
000341
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EMU01278
FUEL MANAGEMENT
ECON SYNCTTL
Twin Engine Speed Synchronizer
This meter displays the difference in
engine speed (r/min) between the Port
and Starboard engines for reference purposes when synchronizing the two
engines’ speeds.
Repeatedly push and release the “mode”
button until the indicator on the face of
the meter points to “SYNC”.
1 Port side engine speed is higher
2 Port side engine speed is slightly higher
3 Engine speed is synchronized evenly
between Port and Starboard side engines
4 Starboard side engine speed is slightly
higher
5 Starboard side engine speed is higher
NOTE:
If the two engines’ speeds are not synchronized while cruising, they can be synchronized by adjusting trim angle or
throttle.
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EMU01207
Water Separator Warning Indicator
If the water which has been separated
from fuel in the water trap exceeds a specific volume, the indicator will blink showing the need for water to be drained.
NOTE:
This indicator only operates when a water
separator sensor is equipped.
2-19
403033
301023
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EMD60010
TILT SUPPORT LEVER
To keep the outboard motor in the tilted-up
position, lock the tilt support lever to the
clamp bracket.
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V6
V6
V4
301021
301022
EMD63210
TOP COWLING LOCK LEVERS
V6
To remove the engine top cowling, pull up
the front and rear lock levers. Then lift off
the cowling. When replacing the cowling,
check to be sure it fits properly in the rubber
seal. Then lock the cowling again by moving the levers downward.
EMD64010
TOP COWLING RELEASE LEVER
V4
The top cowling can be removed by operating the cowling release lever.
Pulling the front lever unlocks the top cowling for removal.
When refitting the top cowling:
1) Set the top cowling straight down onto
the engine, being careful to avoid catching spark plug leads or other wires.
2-20
211013
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V4
2) Align the three cowling hooks with the
locks on the bottom cowling.
3) Press down on the top of the cowling at
the front and both sides of the back until
the three locks click.
4) To make sure the cowling is locked
properly push the cowling from each
side. If it lifts, repeat step 3.
cC
Make sure the cowling lock connection
cable is operating correctly before reinstalling the top cowling.
8 When the release lever is operated,
both front and rear cowling hooks
should be released at the same time.
If not, adjust the cable adjuster for the
rear clamps.
8 Make sure the cable operates smooth-
ly and is free of corrosion.
8 Check that the cable is properly
secured in the holder.
8 When reinstalling the cowling, insure
that both the front and rear locks have
operated properly.
If the cowling has not been locked properly some parts may be damaged by the
top cowling shaking during operation.
EMU01146
FLUSHING DEVICE
This device 1 is used to clean the cooling
water passages of the motor using a garden hose and tap water.
NOTE:
Refer to “Cleaning Cooling-water Passages” in Chapter 4 for instructions on
usage.
2-21
001053
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EMD80010
WARNING SYSTEM
cC
Do not continue to operate the engine if
the warning device has activated. Consult your Yamaha dealer if the problem
cannot be located and corrected.
EMU01476
OVERHEAT WARNING
This engine has an overheat warning
device. If the engine temperature rises too
high, the warning device will activate.
(1) ; Included (-); N/A
Activation of warning
701054
device
The engine speed will
automatically
decrease to about
2,000 r/min.
The overheat warning
indicator will come on.
The buzzer will sound.
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Tiller Remote
control control
model model
2
1
2*
2
605015
If the warning system has been activated,
stop the engine and check the water inlet
for clogging.
* Not equipped on all models.
2-22
001054
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EMD84012*
OIL LEVEL WARNING / OIL FILTER
CLOGGING WARNING
This engine has an oil level warning system.
If oil level falls below lower limit, the
warning device will activate.
(2); Included (—); N/A
Warning device
activation
The engine speed
will automatically
decrease to about
2,000 r/min.
The oil level warning
indicator will come on.
The buzzer will sound.
701054
If the warning system has been activated,
stop the engine and check for the cause.
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Tiller Remote
control control
model model
2
2
2
q
q
213022
905012*
NOTE:
The warning for oil filter clogging is similar to the warnings for low oil level and
overheating.
For easy troubleshooting, it is advisable
to check for engine overheating first, then
oil level and finally oil filter clogging.
1 Oil filter
2-23
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EMF00010
Chapter 3
OPERATION
INSTALLATION ........................................3-1
Mounting the outboard motor............3-2
FILLING FUEL AND ENGINE OIL ............3-4
Filling fuel..............................................3-4
Filling oil ................................................3-5
PRE-OPERATION CHECK ........................3-9
Operation after a long period of
storage.................................................3-10
BREAKING IN ENGINE ..........................3-11
STARTING ENGINE ..............................3-13
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1
2
3
WARMING UP ENGINE .........................3-17
SHIFTING ................................................3-18
Forward ...............................................3-18
Reverse................................................3-18
STOPPING ENGINE ...............................3-19
TRIMMING OUTBOARD MOTOR.........3-20
Adjusting trim angle ..........................3-21
TILTING UP/DOWN ...............................3-23
CRUISING IN OTHER CONDITIONS.....3-25
Cruising in salt water .........................3-25
Cruising in turbid water.....................3-25
4
5
6
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EMF10010
INSTALLATION
cC
Incorrect engine height or obstructions
to smooth water flow (such as the
design or condition of the boat or accessories such as transom ladders/depth
finder transducers) can create airborne
water spray while the boat is cruising.
Severe engine damage may result if the
motor is operated continuously in the
presence of airborne water spray.
NOTE:
During water testing check the buoyancy of
the boat, at rest, with its maximum load.
Check that the static water level on the
exhaust housing is low enough to prevent
water entry into the powerhead, when water
rises due to waves when the outboard is not
running.
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3-1
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EMU00176
MOUNTING THE OUTBOARD
MOTOR
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Improper mounting of the outboard
motor could result in hazardous conditions such as poor handling, loss of control, or fire hazards. Observe the following:
8 The information presented in this sec-
tion is intended as reference only. It is
not possible to provide complete
instructions for every possible
boat/motor combination. Proper
mounting depends in part on experi-
ence and the specific boat/motor com-
bination.
8 Your dealer or other person experi-
enced in proper rigging should mount
the motor. If you are mounting the
motor yourself, you should be trained
by an experienced person. [permanent
mounted type]
8 Your dealer or other person experi-
enced in proper outboard motor
mounting should show you how to
mount your motor. [portable type]
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Mount the outboard motor on the center
line (keel line) of the boat, and ensure that
the boat itself is well balanced. Otherwise,
the boat will be hard to steer. For boats
without a keel or which are asymmetrical,
consult your dealer.
1 Center line (keel line)
3-2
104014
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w
Overpowering a boat may cause severe
instability. Do not install an outboard
motor with more horsepower than the
maximum rating on the capacity plate of
the boat. If the boat does not have a
capacity plate, consult the boat manufacturer.
EMU01299
Mounting Height
To run your boat at optimum efficiency,
the water-resistance (drag) of the boat
and outboard motor must be made as little as possible. The mounting-height of
the outboard motor greatly affects the
water-resistance. If the mounting-height
is too high, cavitation tends to occur, thus
reducing the propulsion; and if the propeller tips cut the air, the engine speed
will rise abnormally and cause the engine
to overheat. If the mounting-height is too
low, the water-resistance will increase
and thereby reduce engine efficiency.
Mount the engine so that the anti-cavitation plate is in alignment with the bottom
of the boat .
NOTE:
8 The optimum mounting height of the
outboard motor is affected by the
boat/motor combination. Test runs at
different heights can help determine the
optimum mounting height.
8 Refer to the section “TRIMMING OUT-
BOARD MOTOR” for instructions on
setting the trim angle of the outboard.
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3-3
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EMF30010
FILLING FUEL
AND ENGINE OIL
FILLING FUEL
1) Remove the fuel tank cap.
2) Fill the fuel tank carefully.
3) Close the cap securely after refueling.
Wipe up any spilled fuel.
Fuel tank capacity:
Refer to “SPECIFICATIONS”, Page 4-1.
Ring Free Fuel Additive
Gasoline is a precise blend of many different substances, each chosen to give certain
characteristics. Gasoline blends have been
changing in recent years in response to
concerns about pollution and resulting
emissions regulations. One of the most
obvious changes has been the elimination
of lead from most fuels.
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As gasoline has changed, the amount of
additives such as aromatics and oxygenates has increased. These additives are
important for the engines in passenger cars,
but they can have detrimental effects in
marine engines, particularly 2 cycle outboards because of increased deposits in
the combustion chamber. When enough
deposits collect, piston rings begin sticking.
Performance drops and engine wear
increases dramatically.
While many additives available may reduce
deposits, Yamaha recommends the use of
Ring Free Fuel Additive, available from
your Yamaha dealer. Ring Free has repeatedly proven its ability to clean combustion
deposits from inside the engine, notably the
critical piston-ring-land area, and fuel system components. Follow product labeling
for use instructions
3-4
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EMU01800
FILLING OIL
This engine uses the oil injection system,
which provides superior lubrication by
ensuring the proper oil ratio for all operating conditions. No fuel premixing is needed (except during break-in). Simply pour
gasoline into the fuel tank and oil into the
oil tank. Convenient indicator segments
indicate the status of the oil supply. For
details on reading the indicator segments,
see “Oil level indicator” in this chapter.
To fill the engine oil tank, proceed as follows:
w
Do not add gasoline into the oil tank. Fire
or explosion could result.
Engine oil tank capacity:
See Chapter 4, “Specifications.”
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001475
EMU01824
When remote oil tank is used
115–130
1) Pour oil into the remote oil tank.
NOTE:
The oil level lines on the remote oil tank
indicate the amount of additional oil that
can be added to the tank. The top oil level
line indicates approximately 1.9 L (0.5 US
gal, 0.4 Imp gal) can be added, and the
bottom oil level line indicates approximately 3.8 L (1 US gal, 0.8 Imp gal) can be
added.
3-5
ON STARTOFF
701024
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2) Turn on the main switch. The oil
injection system will automatically
feed oil from the remote oil tank to
the engine oil tank.
3) Turn the off main switch when the
engine oil tank is full.
ON STARTOFF
701052
4) Proceed to start the engine. Other-
wise the oil level warning system
may prevent the engine from revving
up.
cC
When the engine is operated for the first
time or stored for a period of time, a minimum of 5 liters (5.3 US qt, 4.4 Imp qt) of
oil should be kept in the remote oil tank.
Otherwise the oil-feed pump chamber
will not be filled with oil, and no oil will
be supplied.
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3-6
ON STARTOFF
701024
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EMU01825
Using remote oil tank
150
1) Pour engine oil into the remote oil
tank.
NOTE:
The oil level lines on the remote oil tank
001475
indicate the amount of additional oil that
can be added to the tank. The top oil level
line indicates approximately 1.9 L (0.5 US
gal, 0.4 Imp gal) can be added, and the
bottom oil level line indicates approximately 3.8 L (1 US gal, 0.8 Imp gal) can be
added.
2) Turn on the main switch. The oil
injection system will automatically
feed oil from the remote oil tank to
the engine oil tank.
3) Operate the engine normally.
cC
When the engine is operated for the first
time or stored for a period of time, a minimum of 5 liters (5.3 US qt, 4.4 Imp qt) of
oil should be kept in the remote oil tank.
Otherwise the oil-feed pump chamber
will not be filled with oil, and no oil will
be supplied.
E
3-7
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EMU01543
Oil Level Indicator
The various oil level system functions are as follows:
E
Oil level indica-
tor (Digital
tachometer)
Oil level indica-
tor (Analog
tachometer)
Green
Yellow
Red Yellow Green
Engine oil
tank
More than
3
300 cm
(0.32 US qt,
0.26 Imp qt)
More than
3
300 cm
(0.32 US qt,
0.26 Imp qt)
3
300 cm
(0.32 US qt,
0.26 Imp qt)
or less
Remote oil
tank
More than
1,500 cm
3
(1.6 US qt,
1.31 Imp qt)
1,500 cm
3
(1.6 US qt,
1.31 Imp qt)
or less
More than
1,500 cm
3
(1.6 US qt,
1.31 Imp qt)
Remarks
• No refilling necessary.
• Add oil, refer to
“FILLING OIL.”
• Check oil filter for clogging.
• Check battery cable con-
nection.
• Buzzer will sound.
• Engine speed is automati-
cally reduced to about
2,000 r/min.
Red
3
300 cm
(0.32 US qt,
0.26 Imp qt)
or less
3-8
1,500 cm
3
(1.6 US qt,
1.31 Imp qt)
or less
• Oil has not been added.
• Buzzer will sound.
• Engine speed is automati-
cally reduced to about
2,000 r/min.
• Refer to Chapter 5.
www.reelschematic.com
EMF40110
PRE-OPERATION CHECK
w
If any item in the pre-operation check is
not working properly, have it inspected
and repaired before operating the outboard motor. Otherwise, an accident
could occur.
Fuel
Check to be sure you have plenty of fuel
for your trip. Make sure there are no fuel
leaks or gasoline fumes.
Be sure the fuel hose is not being flattened
or kinked by objects in the boat, and that
there are no sharp objects near it.
Oil
Check to be sure you have plenty of oil for
your trip.
E
Controls
Check throttle, shift, and steering for proper operation before starting the engine.
The controls should work smoothly, without binding or unusual free play. Look for
loose or damaged connections.
Check operation of the starter and stop
switches when the outboard moter is in
the water.
Engine
Check the engine and engine mounting.
Look for loose or damaged fasteners.
Check the propeller for damage.
cC
Do not start the engine out of water.
Overheating and serious engine damage
can occur.
3-9
212012
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EMU01790
OPERATION AFTER A LONG PERIOD
OF STORAGE
When operating the engine after a long
period (12 months) of storage, proceed as
follows:
1) Use a 50:1 gasoline-oil mixture to
start the engine.
2) Start the engine. Leave it idling.
w
V4
V6
8 Do not touch or remove electrical parts
when starting or during operation.
8 Keep hands, hair, and clothes away
from the flywheel and other rotating
parts while the engine is running.
3) Watch for oil flowing through the oil
feed pipes. After any air in the oil
lines has been expelled, the oil injection system should supply oil normally. If no oil is flowing after 10 minutes
of idling, consult your Yamaha dealer.
cC
Be sure to take the above steps when
operating the engine after a long period
of storage. Otherwise engine seizure
could occur.
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212013
3-10
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EMU01776
BREAKING IN ENGINE
Your new engine requires a period of
break-in to allow mating surfaces of moving parts to wear in evenly. Correct breakin will help ensure proper performance
and longer engine life.
cC
8 Failure to follow the break-in procedure
could result in reduced engine life or
even severe engine damage.
8 Premix fuel must be used during break-
in, in addition to oil in the oil injection
system.
Break-in time: 10 hours
Gasoline to engine oil premix ratio
during break-in: 50:1
E
EMU00225
Gasoline (petrol)/Engine oil mixing chart
Mixing ratio
Gasoline (Petrol)
Engine oil
1 L
(0.26 US gal,
0.22 Imp gal)
0.02 L
(0.02 US qt,
0.02 Imp qt)
50:1
12 L
(3.2 US gal,
2.6 Imp gal)
0.24 L
(0.25 US qt,
0.21 Imp qt)
14 L
(3.7 US gal,
3.1 Imp gal)
0.28 L
(0.30 US qt,
0.25 Imp qt)
cC
Make sure to mix gasoline (petrol) and oil
completely, otherwise your outboard
motor may be damaged.
3-11
24 L
(6.3 US gal,
5.3 Imp gal)
0.48 L
(0.51 US qt,
0.42 Imp qt)
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EMU01784
Run the engine under load (in gear with a
propeller installed) as follows.
1) First 10 minutes:
Run the engine at the lowest possible-speed. A fast idle in neutral is
best.
2) Next 50 minutes:
Do not exceed half throttle (approximately 3,000 r/min). Vary engine
speed occasionally. If you have an
easy-planing boat, accelerate at full
throttle onto plane, then immediately
reduce the throttle to 3,000 r/min or
less.
3) Second hour:
Accelerate at full throttle onto plane,
then reduce engine speed to threequarter throttle (approximately 4,000
r/min). Vary engine speed occasionally. Run at full throttle for one minute,
then allow about 10 minutes of operation at three-quarter throttle or less to
let the engine cool.
4) Third through tenth hours:
Avoid operating at full throttle for
more than 5 minutes at a time. Let the
engine cool between full-throttle runs.
Vary engine speed occasionally.
5) After the first 10 hours:
Operate the engine normally. Use
only straight gasoline in the fuel tank.
The oil injection system provides
proper lubrication for normal operation.
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3-12
001671
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EMU01197
STARTING ENGINE
w
8 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.
8 When the air vent screw is loosened,
gasoline (petrol) vapor will be released.
Gasoline (petrol) is highly flammable,
and its vapors are flammable and
explosive. Refrain from smoking, and
keep away from open flames and
sparks while loosening the air vent
screw.
8 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.
E
1) If there is an air vent screw on the fuel
tank cap, loosen it 2 or 3 turns.
2) If there is a fuel joint or a fuel cock on
the boat, firmly connect the fuel line
to the joint or open the fuel cock.
3) Squeeze the primer bulb with the outlet end up until you feel it become
firm.
3-13
N
701015
ON
STARTOFF
701045
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EMU00248
PROCEDURE FOR REMOTE
CONTROL MODEL
4) Place the remote control lever in the
Neutral position.
NOTE:
The start-in-gear protection device permits the engine to be started only when it
is in Neutral.
5) Attach the engine stop switch lanyard
to a secure place on your clothing, or
your arm or leg. Then, install the lock
plate on the other end of the lanyard
in the engine stop switch.
w
8 Attach the engine stop switch lanyard
to a secure place on your clothing, your
000293
arm or leg while operating.
8 Do not attach the lanyard to clothing
that could tear loose. Do not route the
lanyard where it could become entangled, preventing it from functioning.
8 Avoid accidentally pulling the lanyard
during normal operation. Loss of
engine power means the loss of most
steering control. Also, without engine
power, the boat could slow rapidly.
This could cause people and objects in
the boat to be thrown forward.
E
6) Turn the main switch to “ON”.
NOTE:
In case of dual-engine operation, when
the main switch is turned on, the buzzer
operates for a few seconds and stops
automatically. Should either of the dual
engines stall, the buzzer operates.
3-14
ON
STARTOFF
701056
N
701014
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EMU00948
Electric Start Model
7) Open the throttle slightly without
shifting using the neutral throttle
lever or the free accelerator.
After the engine starts, return the
throttle to the original position.
NOTE:
The rotation angle of the neutral throttle
lever or the free accelerator should be
determined upon the engine temperature.
When the engine is cold, it is necessary to
rotate the lever a little farther.
E
8) Press in and hold the main switch to
operate the remote choke
system.(The remote choke switch
returns to its home position when
you release your hand. Therefore,
keep the switch pressed in.)
NOTE:
8 It is not necessary to use the choke
when the engine is warm.
8 Set the choke knob to the home posi-
tion, or the remote choke system will
not operate.
ON
STARTOFF
9) Turn the main switch to “START”,
and hold it for a maximum of 5 sec-
701041
3-15
onds.
10) Immediately after the engine starts,
release the main switch to return it to
“ON”.
www.reelschematic.com
cC
8 Do not turn the main switch to
“START” when the engine is running.
8 Do not keep the starter motor turning
for more than 5 seconds. The starter
can be damaged. The battery will also
run down quickly, making it harder to
start the engine. If the engine does
not start within 5 seconds, return the
main switch to “ON”, wait 10 seconds, and then crank the engine
again.
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3-16
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EMG00010
WARMING UP ENGINE
1) Before beginning operation, allow the
engine to warm up at idling speed for 3
minutes. (Failure to do this will shorten
engine life.)
2) Check for a steady flow of water from
the cooling-water pilot hole.
cC
A continuous flow of water from the pilot
hole shows that the water pump is
pumping water through the cooling passages. If water is not flowing out of the
pilot hole at all times while the engine is
running, do not continue to run the
engine. Overheating and serious damage could occur. Stop the engine and
check to see if the water inlet on the
lower casing is blocked. If the problem
cannot be found and corrected, consult
your Yamaha dealer.
E
3-17
701043
N
F
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EMG20310
SHIFTING
w
Before shifting, make sure there are no
swimmers or obstacles in the water near
you.
cC
To change the shifting position from forward to reverse or vice-versa, close the
throttle first so that the engine idles (or
runs at low speeds).
FORWARD
Pull up the neutral interlock trigger (If
equipped) and move the remote control
lever quickly and firmly from Neutral to Forward.
E
REVERSE
N
R
Pull up the neutral interlock trigger (If
equipped) and move the remote control
lever quickly and firmly from Neutral to
Reverse.
w
When operating in Reverse, go slowly.
701044
Do not open the throttle more than half.
Otherwise, the boat may become unstable, which could result in loss of control
and an accident.
3-18
ON
START
OFF
701023
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EMG38010
STOPPING ENGINE
Let it cool off for a few minutes at idle or
low speed first. Stopping the engine
immediately after operating at high speed
is not recommended.
EMG41511
1) Turn the main switch to “OFF”.
NOTE:
The engine can also be stopped by
pulling the lanyard from the engine stop
switch (then turning the main switch to
“OFF”).
2) Tighten the air vent screw on the fuel
tank cap after stopping the engine, if
it is equipped.
3) Remove the key if the boat will be left
unattended.
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3-19
q
000861
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EMU01412
TRIMMING OUTBOARD
MOTOR
The trim angle of the outboard motor
helps determine the position of the bow
of the boat in the water. The correct trim
angle will help improve performance and
fuel economy while reducing strain on the
engine. The 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.
w
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.
E
NOTE:
Refer to the section “ADJUSTING TRIM
ANGLE” for instructions on usage.
1 Trim operating angle
3-20
UP
DN
702014*
q
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ADJUSTING TRIM ANGLE
EMU01401
Power Trim/Tilt Model
w
8 Be sure all people are clear of the out-
board motor when adjusting the
trim/tilt angle, also be careful not to
pinch any body parts between the drive
unit and clamp bracket.
8 Use caution when trying a trim position
for the first time. Increase speed gradually and watch for any signs of instability or control problems.
8 Use the power trim/tilt switch located
on the bottom engine cowling (if
equipped) only when the boat is at a
complete stop with the engine off.
The outboard motor trim angle can be
adjusted operating the power trim/tilt
switch 1.
E
To raise the bow (“trim-out”), push the
switch UP.
To lower the bow (“trim-in”), push the
switch DN.
Make test runs with the trim set to different angles to find the position that works
best for your boat and operating conditions.
NOTE:
To adjust the trim angle while the boat is
moving, use the power trim and tilt
switch located on the remote control
device or tiller handle, if so equipped.
3-21
001672
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EMU19160
Trim angle settings and boat handling
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. The trim tab can also be adjusted to help offset this effect.
E
w
e
001673
001674
1 Optimum angle (level keel line)
2 Bow up
3 Bow down
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
When the bow of the boat is down, it is
easier to accelerate from a standing start
onto plane. 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.
3-22
000817
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NOTE:
Depending on the type of boat, the outboard motor trim angle may have little
effect on the trim of the boat when operating.
EMU01200
TILTING UP/DOWN
If the engine will be stopped for some
time, or if the boat is moored in shallows,
the engine should be tilted up to protect
the propeller and casing from damage by
collision with obstructions, and also to
reduce salt corrosion.
cC
Before tilting the motor, follow the procedures under “STOPPING ENGINE”. Never
tilt the motor while the engine is running.
Severe damage from overheating can
result.
E
w
Be sure all people are clear of the outboard motor when adjusting the tilt
angle, also be careful not to pinch any
body parts between the drive unit and
engine bracket.
w
Leaking fuel is a fire hazard. 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. (If the
fuel connector is provided on the motor.)
3-23
302012
UP
DOWN
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EMU01201
UP
DN
403033
PROCEDURE FOR TILTING UP
Power trim/tilt model
1) If there is a fuel joint or a fuel cock on
the boat, disconnect the fuel line or
close the fuel cock.
2) Push the power trim/tilt switch “UP”
until the outboard has tilted up completely.
3) Turn the tilt-support lever toward you
and support the engine.
w
After tilting the engine, be sure to support it with the tilt-support lever. Otherwise, the engine could fall back down
suddenly if oil in the power trim/tilt unit
should lose pressure.
E
3-24
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4) Once the engine is supported with the
tilt-support lever, push the power
trim/tilt switch DOWN to retract the
trim rods.
cC
Be sure to retract the trim rods completely during mooring. This protects the rods
from marine growths and corrosion
which could damage the power trim/tilt
mechanism.
PROCEDURE FOR TILTING DOWN
Power trim and tilt
1) Push the power trim and tilt switch
“UP” until the engine is supported by
the tilt rod.
2) Release the tilt-support lever.
3) Push the power trim and tilt switch
411021
“DN” (Down) to lower the engine to
the desired position.
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EMH60010
CRUISING IN
OTHER CONDITIONS
CRUISING IN SALT WATER
After operating in salt water, wash out the
cooling-water passages with fresh water
to prevent them from becoming cloggedup with salt deposits.
NOTE:
Refer to cooling system flushing instructions in STORING AND TRANSPORTING
OUTBOARD MOTOR.
CRUISING IN TURBID WATER
It is strongly recommended that the
optional chromium-plated water-pump kit
be installed if the outboard is to be used
in turbid (muddy) water conditions.
3-25
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EMK00010
Chapter 4
MAINTENANCE
SPECIFICATIONS .....................................4-1
E
1
TRANSPORTING AND STORING
OUTBOARD MOTOR ...............................4-3
Trailering outboard motor...................4-3
Storing outboard motor ......................4-4
PERIODIC MAINTENANCE......................4-8
Replacement parts ...............................4-8
Maintenance chart................................4-9
Cleaning and adjusting spark plug...4-10
Checking top cowling ........................4-11
Checking fuel system.........................4-12
Cleaning fuel filter ..............................4-13
Inspecting idling speed......................4-14
Checking water trap under engine
oil tank .................................................4-15
Replacing fuse ....................................4-16
Checking wiring and connectors ......4-16
Exhaust leakage..................................4-16
Water leakage .....................................4-16
Greasing ..............................................4-17
Checking power trim and tilt
system .................................................4-19
Checking propeller .............................4-20
Changing gear oil ...............................4-22
Inspecting and replacing anode(s) ...4-23
Checking battery.................................4-24
Checking bolts and nuts ....................4-28
Motor exterior.....................................4-28
Cleaning cooling-water passages.....4-28
Coating the boat bottom ...................4-29
2
3
4
5
6
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E
EMK10010
SPECIFICATIONS
Model
Item
DIMENSIONS
9 Overall Length mm (in.)
9 Overall Height L/X mm (in.)
9 Overall Width mm (in.)
9 Transom height L/X mm (in.)
9 Weight* L/X kg (lb.)
PERFORMANCE
9 Full throttle operating range r/min
9 Maximum output kW (HP)
9 Idling speed (in neutral) r/min
ENGINE
9 Engine type
Number of cylinder
Displacement cm
Bore × stroke mm (in.)
9 Ignition system
9 Spark plug NGK
Spark plug gap mm (in.)
9 Control system
9 Starting system
9 Battery
Min. cold cranking amps (CCA/SAE) amps at -18°C (-0.4°F)
Min. marine cranking amps (MCA/ABYC)
Min. reserve capacity (RC/SAE) minutes
9 Alternator output V-A (W)
9 Starting carburation system
DRIVE UNIT
9 Gear positions
Gear ratio
9 Trim/tilt system
9 Propeller mark
FUEL AND OIL
9 Fuel
Fuel tank capacity L (US gal, Imp gal)
9 Recommended engine oil
Lubrication
Engine oil capacity (engine oil tank) L (US qt, Imp qt)
(remote oil tank)
9 Recommended gearcase oil
Gear oil capacity cm
TIGHTENING TORQUE
9 Spark plug N•m (kgf•m, lb•ft)
9 Propeller nut N•m (kgf•m, lb•ft)
* Listed weight does not include propeller.
Unit 115TRC
3
(cu.in.)
amps at 0°C (32°F)
3
(US oz, Imp oz)
808 (31.8)
1,472 (58.0)/1,599 (63.0)
582 (22.9)
516 (20.3)/642 (25.3)
163 (359)/167 (368)
4,500 ~ 5,500
84.6 (115) at 5,000 r/min
700~800
2-stroke, 90°V
4
1,730 (105.6)
90.0 × 68.0 (3.54 × 2.68)
C.D.I system
BR8HS-10
0.9~1.0 (0.035~0.039)
Remote control
Electric start
380
502
124
12-20
Choke valve start system
Forward-Neutral-Reverse
2.00 (26/13)
Power trim/tilt
K
Regular unleaded gasoline
(P.O.N.: minimum 86)
–
YAMALUBE 2 STROKE OUTBOARD OIL
or an equivalent TC-W3 certified outboard oil
oil injection system
0.9 (0.95, 0.79)
10.5 (11.1, 9.2)
Hypoid gear oil (SAE90)
760 (25.7, 26.8)
25 (2.5, 18)
55 (5.5, 40)
4-1
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130TRC 150TRC V150TRC
E
808 (31.8)
1,472 (58.0)/1,599 (22.9)
582 (22.9)
516 (20.3)/642 (25.3)
163 (359)/167 (368)
5,000~6,000
95.6 (130) at 5,500 r/min
700~800
2-stroke, 90°V
4
1,730 (105.6)
90.0 × 68.0 (3.54 × 2.68)
C.D.I system
BR9HS-10
0.9~1.0 (0.035~0.039)
Remote control
Electric start
380
502
124
12-20
Choke valve start system
Forward-Neutral-Reverse
2.00 (26/13)
Power trim/tilt
K
823 (32.4)
—/1,742 (68.6)
577 (22.7)
—/642 (25.3)
—/194 (428)
4,500 ~ 5,500
110.3 (150) at 5,000 r/min
675~725
2-stroke, 90°V
6
2,596 (158.4)
90.0 × 68.0 (3.54 × 2.68)
C.D.I system (Microcomputer)
BR7HS-10
0.9~1.0 (0.035~0.039)
Remote control
Electric start
380
502
124
12-25
Choke valve start system
Forward-Neutral-Reverse
1.86 (26/14)
Power trim/tilt
M
823 (32.4)
1,637 (64.4)/—
577 (22.7)
516 (20.3)/—
190 (419)/—
4,500 ~ 5,500
110.3 (150) at 5,000 r/min
675~725
2-stroke, 90°V
6
2,596 (158.4)
90.0 × 68.0 (3.54 × 2.68)
C.D.I system (Microcomputer)
BR7HS-10
0.9~1.0 (0.035~0.039)
Remote control
Electric start
380
502
124
12-25
Choke valve start system
Forward-Neutral-Reverse
2.0 (28/14)
Power trim/tilt
M
Regular unleaded gasoline (P.O.N.:
minimum 86)
–
YAMALUBE 2 STROKE OUTBOARD OIL or
an equivalent TC-W3 certified outboard oil
oil injection system
0.9 (0.95, 0.79)
10.5 (11.1, 9.2)
Hypoid gear oil (SAE90)
760 (25.7, 26.8)
25 (2.5, 18)
55 (5.5, 40)
Regular unleaded gasoline
(P.O.N.: minimum 86)
–
Yamalube 2-M outboard oil or another outboard
motor manufacture’s factory-brand oil with TC-W3
oil injection system
0.9 (0.95, 0.79)
10.5 (11.1, 9.2)/18.0 (19.1, 15.9)
Hypoid gear oil (SAE90)
980 (33.1, 34.5)
25 (2.5, 18)
55 (5.5, 40)
Regular unleaded gasoline (P.O.N.:
minimum 86)
–
Yamalube 2-M outboard oil or another outboard
motor manufacture’s factory-brand oil with TC-W3
oil injection system
0.9 (0.95, 0.79)
10.5 (11.1, 9.2)/18.0 (19.1, 15.9)
Hypoid gear oil (SAE90)
980 (33.1, 34.5)
25 (2.5, 18)
55 (5.5, 40)
4-2
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EMU01369*
TRANSPORTING AND
STORING OUTBOARD MOTOR
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Leaking fuel is a fire hazard. When transporting and storing the outboard motor,
close the air vent screw and fuel cock to
prevent fuel from leaking.
TRAILERING OUTBOARD MOTOR
The motor should be trailered and stored in
the normal running position. If there is insufficient road clearance in this position, then
trailer the motor in the tilt position using a
motor support device such as a transom
saver bar.
cC
Do not use the tilt support lever/knob
when trailering the boat. The outboard
motor could shake loose from the tilt
support and fall. If the motor can not be
trailered in the down position, use an
additional support device to secure it in
the up position.
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8 Never get under the lower unit while it
is tilted, even if a motor support bar is
used. Severe injury could occur if the
outboard accidentally falls.
8 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.
4-3
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EMU01796*
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. This is especially
important for your oil injection-equipped
outboard motor due to the lean oil ratios
used at idle prior to shutting the engine
off for the season. It is advisable to have
your outboard motor serviced by an
authorized Yamaha dealer prior to storage. However, the following procedures
can be performed by you, the owner, with
a minimum of tools.
Filling Fuel Tank
Fill the fuel tank with fresh fuel and add one
ounce of “Yamaha fuel conditioner and stabilizer” (Part No. LUB-FUELC-12-00) to
each gallon of fuel.
NOTE:
The use of Yamaha Fuel Conditioner and
Stabilizer eliminates the need to drain the
fuel system. Consult your Yamaha dealer or
other qualified mechanic if the fuel system
is to be drained instead.
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4-4
605014
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Flushing Cooling System and Fogging
Engine
Cooling system flushing is essential to prevent the cooling system from clogging up
with salt, sand, or dirt. In addition, fogging
of the engine is mandatory to prevent
expensive engine damage due to rust. Perform the flushing and fogging at the same
time.
1) Remove the top cowling and silencer
cover. Remove the propeller.
2) Install a flushing attachment to the lower
unit. (Flushing attachment available
from your Yamaha dealer).
cC
Avoid running the outboard at high rpm
while on the flushing attachment or
overheating could occur.
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8 Do not touch or remove electrical
parts when starting or during operation.
8 Keep hands, hair and clothes away
from flywheel and other rotating parts
while engine is running.
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3) Run the engine at a fast idle for 10~15
minutes.
4) Just prior to turning off the engine,
quickly spray “Yamaha Stor-Rite Engine
Fogging Oil (Part No. LUB-STRRT-12-
00) alternately into each carburetor.
When properly done, the engine will
smoke excessively and almost stall.
5) Remove the flushing attachment and
wipe off any excess water.
6) Install the silencer cover and top cowl-
ing. Install the propeller.
4-5
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EMK26110*
Lubrication
1) Remove the spark plugs, and spray a 10
second spray of Yamaha Stor-Rite
Engine Fogging Oil into each cylinder.
Grease the spark plug threads and reinstall the spark plugs and torque to proper specification.
(Refer to the Periodic Cleaning and
Inspection section, “Cleanning and
adjusting spark plug.”).
2) Turn the engine over with the stop lan-
yard disconnected to work the fogging
oil into the piston rings.
3) Fill the oil tanks. This prevents the for-
mation of condensation. For models with
a remote tank, it may be necessary to
manually override the control unit to
completely fill the engine main tank.
(Refer to the Troubleshooting section,
“Temporary action in emergency.”).
4) Change the lower unit oil. (Refer to the
Periodic Cleaning and Inpsection section, “Changing gear oil.”). Inspect the
oil for the presence of water which indicates a leaky seal. Seal replacement
should be performed by an authorized
Yamaha dealership prior to use.
5) Grease all grease fittings. (Refer to the
Periodic Cleaning and Inspection section, “Greasing.”)
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EMK27010*
Cleaning and Anti-corrosion Measure
1) Wash down the exterior of the outboard
with fresh water and dry off completely.
2) Spray the engine’s exterior with Yamaha
Silicone Protectant (Part No. LUB-SILCNE-13-00).
3) Wax the cowling with a non-abrasive
wax such as Yamaha Silicone Wax
(Part No. ACC-11000-15-02).
4-6
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EMK28010*
Battery Care
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Battery electrolyte is poisonous and
dangerous, causing severe burns, etc. It
contains sulfuric acid. Avoid contact
with skin, eyes, or clothing.
Antidote:
EXTERNAL; Flush with water.
INTERNAL; Drink large quantities of
water or milk. Follow with milk of magnesia, beaten egg, or vegetable oil. Call
physician immediately.
EYES; Flush with water for 15 minutes
and get prompt medical attention.
Batteries produce explosive gases: Keep
sparks, flame, cigarettes, etc. away. Ventilate when charging or using in a closed
space. Always wear eye protection when
working near batteries.
KEEP OUT OF REACH OF CHILDREN.
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NOTE:
Batteries vary among manufacturers.
Therefore the following procedures may not
always apply. Consult your battery manufacturer’s instructions.
1) Disconnect and remove the battery from
the boat. Always disconnect the black
negative lead first to prevent the risk of
shorting.
2) Clean the battery casing and terminals.
Fill each cell to the upper level with distilled water.
3) Store the battery on a level surface in a
cool, dry, well-ventilated place out of
direct sunlight.
4) Once a month, check the specific gravity
of the electrolyte and recharge as
required to prolong battery life.
4-7
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EMU01569
PERIODIC MAINTENANCE
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Be sure to turn off the engine when you
perform maintenance unless otherwise
specified. If the owner is not familiar with
machine servicing, this work should be
done by a Yamaha dealer or other qualified mechanic.
Maintenance, replacement, or repair of
the emission control devices and systems
may be performed by any marine engine
repair establishment or individual. All
warranty repairs, however, including
those to the emission control system,
must be performed by an authorized
Yamaha marine dealership.
A service manual is available for purchase
through a Yamaha dealer for owners who
have the mechanical skills, tools, and
other equipment necessary to perform
maintenance not covered by this owner’s
manual.
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EMK33011
REPLACEMENT PARTS
If replacement parts are necessary, use
only genuine Yamaha parts or equivalents of the same type and of equivalent
strength and materials. 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 a Yamaha dealer.
4-8
10 hours 50 hours 100 hours 200 hours
(1 month) (3 months) (6 months) (1 year)
Spark plug(s)
Cleaning / adjustment /
replacement
●●●
Greasing points Greasing ●
Gear oil Change ●●
Fuel system Inspection ●●●
Fuel filter (can be
disassembled)
Inspection / cleaning ●●●
Fuel tank (Yamaha
portable tank)
Inspection / cleaning ●
Idling speed (carburetor
models)
Inspection / adjustment ●/1 ●/1
Anode(s) (external) Inspection / replacement ●/1 ●/1
Anode(s) (internal) Inspection / replacement
1
Cooling water passages Cleaning ●●
Propeller and cotter pin Inspection / replacement ●●
Battery Inspection / charging ●/1
Throttle link / throttle cable
/ throttle pick-up timing
Inspection / adjustment
1
Shift link / shift cable Inspection / adjustment
1
Oil tank water drain Inspection / cleaning ●/1 ●/1 ●/1
Oil pump Inspection / adjustment
1
Thermostat Inspection
1
PCV (Pressure Control
Valve)
Inspection
1
Power trim and tilt unit Inspection
1
Water pump Inspection
1
Cowling clamp Inspection ●
Actions
Item
Initial
Every
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EMU19470
MAINTENANCE CHART
Frequency of maintenance operations may be adjusted according to the operating conditions, but the following table gives general guidelines. Refer to the sections in this
chapter for explanations of each owner-specific action.
The mark (
The mark (1) indicates work to be carried out by your Yamaha dealer.
●) indicates the check-ups which you may carry out yourself.
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NOTE:
When operating in salt water, turbid or muddy water, the engine should be flushed
with clean water after each use.
4-9
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EMU01202
CLEANING AND ADJUSTING SPARK
PLUG
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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.
The spark plug is an important engine
component and is easy to inspect. 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 inspect the spark plug
because heat and deposits will cause the
spark plug to slowly break down and
erode. If electrode erosion becomes
excessive, or if carbon and other deposits
are excessive, you should replace the
spark plug with another of the correct
type.
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Standard spark plug:
Refer to “SPECIFICATIONS”, page 4-1.
Before fitting the spark plug, measure the
electrode gap with a wire thickness
gauge; adjust the gap to specification if
necessary.
Spark plug gap:
Refer to “SPECIFICATIONS”, page 4-1
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When fitting the plug, always clean the
gasket surface and use a new gasket.
Wipe off any dirt from the threads and
screw in the spark plug to the correct
torque.
Spark plug torque:
Refer to “SPECIFICATIONS”, page 4-1.
NOTE:
If a torque-wrench is not available when
you are fitting a spark plug, a good estimate of the correct torque is 1/4 to 1/2 a
turn past finger-tight. Have the spark plug
adjusted to the correct torque as soon as
possible with a torque-wrench.
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Initial of spark plug
I.D. mark
B 21 mm (13/16 in.)
C/BK 16 mm (5/8 in.)
D 18.3 mm (23/32 in.)
1 Spark plug gap
2 Spark plug I.D. mark (NGK)
EMU16350
Plug wrench size
CHECKING TOP COWLING
Check the fitting of the top cowling by
pushing it with both hands.
If the fitting is loose have it repaired by a
Yamaha dealer.
4-11
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V4
V6
106031
106032
EMK38010
CHECKING FUEL SYSTEM
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Gasoline (petrol) and its vapors are highly flammable and explosive. Keep away
from sparks, cigarettes, flames or other
sources of ignition.
Check the fuel line for leaks, cracks, or malfunctions. If any problem is found, it should
be repaired immediately by Yamaha dealer
or other qualified mechanic.
Checking points
8 Fuel system parts leakage.
8 Fuel hose joint leakage.
8 Fuel hose cracks or other damage.
8 Fuel connector leakage.
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Leaking fuel can result in fire or explosion.
8 Check for fuel leakage regularly.
8 If any fuel leakage is found, the fuel
system must be repaired by a qualified
mechanic.
Improper repairs can make the outboard unsafe to operate.
4-12
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EMK50011
CLEANING FUEL FILTER
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Gasoline (petrol) is highly flammable, and
its vapors are flammable and explosive.
8 If you have any question about properly
doing this procedure, consult your
Yamaha dealer.
8 Do not perform this procedure on a hot
or running engine. Allow the engine to
cool.
8 There will be fuel in the fuel filter. Keep
away from sparks, cigarettes, flames or
other sources of ignition.
8 This procedure will allow some fuel to
spill. Catch fuel in a rag. Wipe up any
spilled fuel immediately.
8 The fuel filter must be reassembled
carefully with O-ring, filter cup, and
hoses in place. Improper assembly can
result in a fuel leak, which could result
in a fire or explosion hazard.
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000983
EMU09782
1) Remove the nut holding the fuel filter
assembly if equipped.
2) Unscrew the filter cup 1, catching
any spilled fuel in a rag.
3) Remove the filter element 2, and
wash it in solvent. Allow it to dry.
Inspect the filter element and O-ring
3 to make sure they are in good condition. Replace them if necessary. If
any water is found in the fuel, the
Yamaha portable fuel tank or other
fuel tanks should be checked and
cleaned.
4) Reinstall the filter element in the cup.
Make sure the O-ring is in position in
the cup. Firmly screw the cup onto
the filter housing 4.
4-13
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5) Attach the filter assembly to the
bracket so that the fuel hoses are
attached to the filter assembly.
6) Run the engine and check the filter
and lines for leaks.
EMU09912
INSPECTING IDLING SPEED
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8 Do not touch or remove electrical parts
when starting or during operation.
8 Keep hands, hair and clothes away
from flywheel and other rotating parts
while engine is running.
cC
This procedure must be performed while
the outboard motor is in the water. A
flushing attachment or test tank can also
be used.
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A diagnostic tachometer should be used
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. If the outboard motor is
mounted on a boat, be sure the boat
is tightly moored.
2) Verify whether the idle speed is set to
specification. For idle speed specifications, see “Specifications” in this
chapter.
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NOTE:
Correct idling speed inspection is only
possible if the engine is fully warmed up.
If not warmed up fully, the idle speed will
measure higher than normal. If you have
difficulty verifying the idle speed, or the
idle speed requires adjustment, consult a
Yamaha dealer or other qualified mechanic.
EMK56010
CHECKING WATER TRAP UNDER
ENGINE OIL TANK
There is a trap at the bottom of the engine
oil tank. If water or foreign matter is visible
in this trap, consult a Yamaha dealer.
1 Trap
2 Engine oil tank
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4-15
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V4
V6
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205034
205026*
EMU01329
REPLACING FUSE
If the fuse has blown on an Electric start
model, open the fuse holder and replace
the fuse with a new one of proper amperage.
w
Be sure to use the specified fuse. An
incorrect fuse or a piece of wire may
allow excessive current flow. This could
cause electrical system damage and a fire
hazard.
NOTE:
If the new fuse blows again immediately,
consult a Yamaha dealer.
1 Fuse holder
2 Fuse (20A/30A)
EMK78010
CHECKING WIRING AND
CONNECTORS
1) Check that each grounding wire is prop-
erly secured.
2) Check that each connector is engaged
securely.
413012
EXHAUST LEAKAGE
Start the engine and check that no exhaust
leaks from the joints between the exhaust
cover, cylinder head and crank case.
WATER LEAKAGE
Start the engine and check that no water
leaks from the joints between the exhaust
cover, cylinder head and crank case.
4-16
103061
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EMU00366
GREASING
Yamaha marine grease
(Water resistant grease)
V4
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4-17
103062
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EMU00366
GREASING
Yamaha marine grease
(Water resistant grease)
V6
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411024
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EML02011*
CHECKING POWER TRIM AND TILT
SYSTEM
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8 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 accidentally falls.
8 Make sure no one is under the out-
board before performing this test.
1) Check the power trim and tilt unit for
any sign of oil leaks.
2) Operate each of the power trim and
tilt switches on remote control and
engine bottom cowling (If equipped)
to check that all switches work.
3) Tilt up the motor and check that the
tilt rod and trim rods are pushed out
completely.
4) Use the tilt-support lever to lock the
motor in the UP position. Operate the
tilt down switch briefly so the motor
is supported the tilt-support lever.
5) Check that the tilt rod and trim rods
are free of corrosion or other flaws.
6) Activate the tilt-down switch until the
trim rods have gone completely into
the cylinders.
7) Activate the trim-up switch until the
tilt rod is fully extended. Unlock the
tilt-support lever.
8) Operate the motor to tilt down. Check
that the tilt rod and trim rods operate
smoothly.
NOTE:
If any operation is abnormal, consult a
Yamaha dealer.
E
Recommended fluid; Yamaha power
trim & tilt fluid or ATF (DEXRON-
4-19
II ).
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EML08210*
CHECKING PROPELLER
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You could be seriously injured if the
engine accidentally starts while you are
near the propeller.
8 Before inspecting, removing or
210012
602051
installing the propeller, remove the
spark plug caps from the spark plugs.
Also, put the shift control in Neutral,
put the main switch in the OFF position and remove the key, and remove
the lanyard from the engine stop
switch. Turn off the battery cut-off
switch if your boat has one.
8 Do not use your hand to hold the pro-
peller when loosening or tightening
the propeller nut. Put a wood block
between the cavitation plate and the
propeller to prevent the propeller from
turning.
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602054
1) Check each of the propeller blades for
wear, erosion from cavitation or ventilation, or other damage.
2) Check the splines for wear and damage.
3) Check for fish line winding around the
propeller shaft.
Check the propeller shaft oil seal for
damage.
4-20
1
2
3
4
5
6
602041
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[How to remove propeller]
1) Using pliers straighten the cotter-pin and
pull it out.
2) Remove the propeller nut.
3) Remove the propeller.
1 Thrust washer 4 Washer
2 Propeller 5 Propeller nut
3 Spacer 6 Cotter pin
[How to install propeller]
1) Apply Yamaha Marine grease A or
Marine grease (water-resistant grease)
to the propeller-shaft.
2) Slide the propeller over the propeller-
shaft.
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Be sure to install the thrust washer
before installing propeller, otherwise,
lower case and propeller boss may be
damaged.
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602053
3) Tighten the propeller nut to the specified
torque.
Tightening torque:
Refer to “SPECIFICATIONS”, Page 4-1.
4) Align the propeller nut with the propeller
shaft hole. Insert a new cotter pin in the
hole and bend the cotter pin ends.
NOTE:
When the propeller nut does not align with
the propeller shaft hole after tightening to
the specified torque, then tighten it more to
align the hole.
cC
Be sure to use a new cotter pin and bend
the ends over securely. Otherwise, the
propeller could come off during operation and be lost.
4-21
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EMU01460
CHANGING GEAR OIL
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8 Be sure the outboard is securely fas-
tened to the transom or a stable stand.
You could be severely injured if the outboard falls on you.
8 Never get under the lower unit while it
is tilted, even when the tilt-support
lever/knob is locked. Severe injury
could occur if the outboard accidentally
falls.
1) Tilt the outboard motor so that the oil
drain plug is at the lowest point possible.
2) Place a suitable container under the
gear-case.
3) Remove the oil drain plug 1.
NOTE:
The oil drain plug is magnetic. Remove all
metal particles from the plug before reinstalling it.
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000565
4) Remove the oil level plug 2 to allow
the oil to drain completely.
cC
Inspect the used oil after it has been
drained. If the oil is milky, water is getting into the gear-case which can cause
gear damage. Consult a Yamaha dealer
for repair of the lower unit seals.
NOTE:
For disposal of used oil consult your
Yamaha dealer.
4-22
000377
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5) With the outboard motor in a vertical
position, and using a flexible or pressurized filling device, inject the gear
oil into the oil drain plug hole.
Gear oil grade/capacity:
Refer to “SPECIFICATIONS,” page 4-1.
6) When the oil begins to flow out of the
oil level plug hole, insert and tighten
the oil level plug.
7) Insert and tighten the oil drain plug.
EMU14622
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
603024
replacement of external anodes.
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Do not paint anodes, as this would render them ineffective.
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405016
NOTE:
Inspect ground leads attached to external
anodes on equipped models. Consult a
Yamaha dealer for inspection and
replacement of internal anodes attached
to the power unit.
4-23
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EMU04041
CHECKING BATTERY (for Electric
start models)
w
Battery electrolytic fluid is dangerous; it
contains sulfuric acid and therefore is poisonous and highly caustic.
Always follow these preventive measures:
8 Avoid bodily contact with electrolytic
fluid as it can cause severe burns or
permanent eye injury.
8 Wear protective eye gear when han-
dling or working near batteries.
Antidote (EXTERNAL):
8 SKIN - Flush with water.
8 EYES - Flush with water for 15 minutes
and get immediate medical attention.
Antidote (INTERNAL):
8 Drink large quantities of water or milk
followed by milk of magnesia, beaten
egg, or vegetable oil. Get immediate
medical attention.
Batteries also generate explosive hydrogen gas; therefore, you should always follow these preventive measures:
8 Charge batteries in a well-ventilated
area.
8 Keep batteries away from fire, sparks,
or open flames (e.g., welding equip-
ment, lighted cigarettes, etc.).
8 DO NOT SMOKE when charging or han-
dling batteries.
8 KEEP BATTERIES AND ELECTROLYTIC
FLUID OUT OF REACH OF CHILDREN.
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cC
8 A poorly maintained battery will quick-
ly deteriorate.
8 Ordinary tap-water contains minerals
harmful to a battery, and should not be
used for topping-up.
1) Check the electrolyte level at least
once a month. Fill to the manufacturer’s recommended level when necessary. Top up only with distilled water
(or pure de-ionized water suitable to
use in batteries).
2) Always keep the battery in a good
state of charge. Installing a voltmeter
will help you monitor your battery. If
you will not use the boat for a month
or more, remove the battery from the
boat and store it in a cool, dark place.
Completely recharge the battery
before using it.
3) If the battery will be stored for longer
than a month, check the specific gravity of the fluid at least once a month
and recharge the battery when it is
low.
NOTE:
Consult a Yamaha dealer when charging
or re-charging batteries.
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EMU01304
Connecting the Battery
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Mount the battery holder securely in a
dry, well-ventilated, vibration-free location in the boat. Install the fully charged
battery in the holder.
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8 Make sure the main switch (on applica-
ble models) is “OFF” before working on
the battery.
8 Reversal of the battery leads will dam-
age the rectifier.
8 Connect the RED lead first when
installing the battery and disconnect
the RED lead last when removing it.
Otherwise, the electrical system can be
damaged.
8 The electrical contacts of the battery
and cables must be clean and properly
connected, or the battery will not start
the engine.
Connect the RED lead to the POSITIVE (+)
terminal first. Then connect the BLACK
lead to the NEGATIVE (-) terminal.
8 Using a single battery
Connect both red cables 1 and 2 to the
(+) terminal.
w
Do not leave cable 2 unconnected. If it
accidentally contacts the NEGATIVE (-)
terminal of the battery, there will be a
short circuit. Electrical system damage
and a fire could result.
UPPER LEVEL
LOWER LEVEL
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1 Large red lead for starting battery
2 Small red lead for accessory battery charg-
ing
3 Large black lead
4 Battery
8 Using an accessory battery
Use a connecting cable between the (-)
terminals of the starting battery and
accessory battery. See the illustrations of
the wiring connections. This cable must
be made from wire equivalent to the starting battery cable 3.
w
Use of smaller wire could lead to a fire.
1 Battery for starting
2 Battery for accessories
3 Large red lead for starting battery
4 Small red lead for accessory battery charg-
ing
5 Large black lead
6 Negative connecting cable
NOTE:
If a battery selector switch is desired, consult your YAMAHA dealer about correct
wiring.
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EMU01280
Disconnecting the Battery
Disconnect the BLACK lead from the NEGATIVE (-) terminal first. Then disconnect
the RED lead from the POSITIVE (+) terminal.
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EML40010
CHECKING BOLTS AND NUTS
1) Check that bolts securing the cylinder
head and engine and the nut securing
the flywheel are tightened with their
specified tightening torques.
2) Check the tightening torques of other
bolts and nuts.
EML42111
MOTOR EXTERIOR
Cleaning the Outboard Motor
After use, wash the exterior of the outboard with fresh water. Flush the cooling
system with fresh water.
EMU01172
CLEANING COOLING-WATER
PASSAGES
Flushing device equipped model
Perform this procedure right after operation for the most thorough flushing.
1) After shutting off the engine, unscrew
the garden-hose connector 2 from
the fitting 1 on the bottom cowling.
2) Screw the garden-hose connector 2
onto a garden hose 3 which is connected to a fresh-water supply.
3) With the engine off, turn on the water
tap and let the water flush through
the cooling passages for about 15
minutes. Turn off the water and disconnect the garden hose 3.
4) When flushing is complete, reinstall
the garden-hose connector 2 on the
fitting 1 on the bottom cowling.
Tighten the connector securely.
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Do not leave the garden-hose connector
loose on the bottom cowling fitting or let
the hose hang free during normal operation. Water will leak out of the connector
instead of cooling the engine, which can
cause serious overheating. Be sure the
connector is tightened securely on the fitting after flushing the engine.
NOTE:
8 When flushing the engine with the boat
in the water, tilting up the engine until it
is completely out of the water will
achieve better results.
8 Refer to cooling system flushing
instructions in “TRANSPORTING AND
STORING OUTBOARD MOTOR”.
EMU00412
Checking Painted Surface of Motor
Check the motor for scratches, nicks, or
flaking paint. Areas with damaged paint
are more likely to corrode. If necessary,
clean and paint the areas. A touch-up
paint is available from a Yamaha dealer.
E
EMU00413
COATING THE BOAT BOTTOM
A clean hull improves boat performance.
The boat bottom should be kept as clean
of marine growths 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.
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