F200
LF200
F225
LF225
OWNER’S MANUAL
U.S.A.Edition
LIT-18626-07-15
69J-28199-17
ZMU01690
Read this owner’s manual carefully before operating your outboard motor.
Important manual information
EMU31280
your machine and this manual. If there is any
question concerning this manual, please con-
To the owner
Thank you for choosing a Yamaha outboard
motor. This Owner’s Manual contains infor-
mation needed for proper operation, mainte-
nance and care. A thorough understanding of
these simple instructions will help you obtain
maximum enjoyment from your new Yamaha.
If you have any question about the operation
or maintenance of your outboard motor,
please consult a Yamaha dealer.
sult your Yamaha dealer.
NOTE:
The F200TR, LF200TR, F225TR, LF225TR
and the standard accessories are used as a
base for the explanations and illustrations in
this manual. Therefore some items may not
apply to every model.
EMU25110
In this Owner’s Manual particularly important
information is distinguished in the following
ways.
F200, LF200, F225, LF225
OWNER’S MANUAL
©2006 by Yamaha Motor Corporation,
USA
The Safety Alert Symbol means AT-
TENTION! BECOME ALERT! YOUR SAFE-
TY IS INVOLVED!
EWM00780
1st edition, March 2006
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Corporation, USA
is expressly prohibited.
Printed in Japan
WARNING
Failure to follow WARNING instructions
could result in severe injury or death to the
machine operator, a bystander, or a per-
son inspecting or repairing the outboard
motor.
P/N LIT-18626-07-15
ECM00700
CAUTION:
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 advancements in
product design and quality. Therefore, while
this manual contains the most current product
information available at the time of printing,
there may be minor discrepancies between
Table of contents
Identification numbers record.......... 1
North American models...................... 1
Star labels .......................................... 2
Important labels............................... 4
Warning labels.................................... 4
Basic boating rules
(pull up type) ................................. 19
Water separator................................ 20
Fuel gauge ....................................... 23
Steering and sailing rules and
Gasoline ............................................. 9
Engine oil............................................ 9
Battery requirement....................... 10
Propeller selection......................... 10
Start-in-gear protection ................. 11
Low oil pressure warning.................. 33
Main components.......................... 12
Remote control................................. 13
Neutral interlock trigger .................... 14
Free accelerator ............................... 15
Throttle friction adjuster.................... 15
Engine stop lanyard switch............... 16
Main switch....................................... 16
Power trim and tilt switch on remote
control or tiller handle.................... 17
Power trim and tilt switch on bottom
engine cowling .............................. 17
Power trim and tilt switches
Operation......................................... 35
Installation..................................... 35
Mounting the outboard motor ........... 35
Breaking in engine ........................ 36
Procedure for 4-stroke models......... 36
Preoperation checks ..................... 37
Fuel .................................................. 37
Controls............................................ 37
Stop switches ................................... 37
Engine .............................................. 37
Checking the engine oil level............ 37
(twin binnacle type)....................... 18
Trim tab with anode.......................... 18
Tilt support lever for power trim and
tilt or hydro tilt model..................... 19
Changing engine oil.......................... 60
Checking wiring and connectors ...... 63
Exhaust leakage............................... 63
Checking power trim and
Checking propeller ........................... 64
Changing gear oil ............................. 66
Checking battery
Ring Free Fuel Additive.................... 38
Operating engine........................... 38
Feeding fuel...................................... 38
Starting engine ................................. 39
Electric start models......................... 40
Shifting .......................................... 41
Stopping engine ............................ 42
Procedure......................................... 42
Trimming outboard motor.............. 43
Adjusting trim angle.......................... 43
Adjusting boat trim............................ 44
Tilting up and down....................... 45
Procedure for tilting up
(power trim and tilt models /
power tilt models).......................... 45
Procedure for tilting down
(power trim and tilt models /
power tilt models).......................... 47
Cruising in shallow water .............. 47
Power trim and tilt models /
Troubleshooting ............................ 71
Temporary action in emergency ... 74
Impact damage................................. 74
Replacing fuse.................................. 75
Power trim and tilt /
power tilt will not operate .............. 76
Water separator warning indicator
Procedure......................................... 78
Transporting and storing outboard
Storing outboard motor..................... 51
Procedure......................................... 52
Lubrication........................................ 53
Cleaning and anticorrosion
measures ...................................... 53
Battery care...................................... 53
Flushing power unit .......................... 54
Cleaning the outboard motor............ 55
Checking painted surface of motor... 55
Periodic maintenance.................... 55
Replacement parts ........................... 55
Maintenance chart............................ 56
Maintenance chart (additional)......... 57
Table of contents
Consumer information....................79
Important warranty information
for U.S.A. and Canada............... 79
YAMAHA MOTOR
CORPORATION, U.S.A.
FOUR-STROKE OUTBOARD
MOTOR THREE-YEAR
LIMITED WARRANTY ............... 81
IMPORTANT WARRANTY
INFORMATION IF YOU USE
YOUR YAMAHA OUTSIDE
THE USA OR CANADA ............. 83
General information
EMU25170
Identification numbers record
EMU25183
Outboard motor serial number
The outboard motor serial number is stamped
on the label attached to the port side of the
clamp bracket.
Record your outboard motor serial number in
the spaces provided to assist you in ordering
spare parts from your Yamaha dealer or for
reference in case your outboard motor is sto-
len.
1. Key number
EMEU25m221ission control information
ENMoU2r52t3h0 American models
This engine conforms to U.S. Environmental
Protection Agency (EPA) regulations for ma-
rine SI engines. See the label affixed to your
engine for details.
EMU31560
Approval label of emission control certifi-
cate
This label is attached to the bottom cowling.
New Technology; (4-stroke) MFI
1. Outboard motor serial number location
EKMeU2y519n0 umber
1. Approval label location
If a main key switch is equipped with the mo-
tor, the key identification number is stamped
on your key as shown in the illustration.
Record this number in the space provided for
reference in case you need a new key.
1
General information
1. Star labels location
EMU25262
Manufactured date label
EMU25280
This label is attached to the clamp bracket or One Star—Low Emission
The one-star label identifies engines that
the swivel bracket.
meet the Air Resources Board’s 2001 ex-
haust emission standards. Engines meeting
these standards have 75% lower emissions
than conventional carbureted two-stroke en-
gines. These engines are equivalent to the
U.S. EPA’s 2006 standards for marine en-
gines.
1. Manufactured date label location
Manufactured:
ZMU01702
EMU25290
Two Stars—Very Low Emission
The two-star label identifies engines that meet
the Air Resources Board’s 2004 exhaust
emission standards. Engines meeting these
standards have 20% lower emissions than
One Star-Low-Emission engines.
ZMU04346
ESMtUa25r27l2abels
Your outboard motor is labeled with a Califor-
nia Air Resources Board (CARB) star label.
See below for a description of your particular
label.
2
General information
the rated horsepower capacity of the boat.
If the rated horsepower capacity of the boat
is unknown, consult the dealer or boat man-
ufacturer.
G Do not modify the outboard. Modifications
could make the motor unfit or unsafe to use.
G Incorrect propeller selection and incorrect
use may not only cause engine damage,
but also adversely affect fuel consumption.
Consult your dealer for correct use.
ZMU01703
EMU25300
G Never operate after drinking alcohol or tak-
ing drugs. About 50% of all boating fatalities
involve intoxication.
Three Stars—Ultra Low Emission
The three-star label identifies engines that
meet the Air Resources Board’s 2008 ex-
haust emission standards. Engines meeting
these standards have 65% lower emissions
than One Star-Low-Emission engines.
G Have an approved personal flotation device
(PFD) on board for every occupant. It is a
good idea to wear a PFD whenever boat-
ing. At a minimum, children and non-swim-
mers should always wear PFDs, and
everyone should wear PFDs when there
are potentially hazardous boating condi-
tions.
G Gasoline is highly flammable, and its va-
pors are flammable and explosive. Handle
and store gasoline carefully. Make sure
there are no gas fumes or leaking fuel be-
fore starting the engine.
ZMU01704
G This product emits exhaust gases which
contain carbon monoxide, a colorless,
odorless gas which may cause brain dam-
age or death when inhaled. Symptoms in-
clude nausea, dizziness, and drowsiness.
Keep cockpit and cabin areas well ventilat-
ed. Avoid blocking exhaust outlets.
G Check throttle, shift, and steering for proper
operation before starting the engine.
G Attach the engine stop switch lanyard cord
to a secure place on your clothing, or your
arm or leg while operating. If you acciden-
tally leave the helm, the cord will pull from
the switch, stopping the engine.
EMU25362
Safety information
G Before mounting or operating the outboard
motor, read this entire manual. Reading it
should give you an understanding of the
motor and its operation.
G Before operating the boat, read any own-
er’s or operator’s manuals supplied with it
and all labels. Be sure you understand each
item before operating.
G Do not overpower the boat with this out-
board motor. Overpowering the boat could
result in loss of control. The rated power of
the outboard should be equal to or less than
3
General information
G Know the marine laws and regulations United States Coast Guard
where you will be boating—and obey them. Consumer Affairs Staff (G-BC)
For basic boating rules, see “Rules of the
road” on page 5.
Office of Boating, Public, and Consumer Af-
fairs
G Stay informed about the weather. Check
weather forecasts before boating. Avoid
boating in hazardous weather.
U.S. Coast Guard Headquarters
Washington, D.C. 20593-0001
Boating Safety Hotline: 1-800-368-5647
G Tell someone where you are going: leave a National Marine Manufacturers Associa-
Float Plan with a responsible person. Be tion (NMMA)
sure to cancel the Float Plan when you re- 401 N. Michigan Ave.
turn.
Chicago, Il 60611
G Use common sense and good judgment Marine Retailers Association of America
when boating. Know your abilities, and be 155 N. Michigan Ave.
sure you understand how your boat han-
dles 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.
G Always watch carefully for swimmers during
the engine operation.
Chicago, Il 60601
EMU25382
Important labels
EMU25395
Warning labels
G Stay away from swimming areas.
G When a swimmer is in the water near you
shift into neutral and shut off the engine.
G Do not illegally discard empty containers
used to replace or replenish oil. For the cor-
rect processing of empty containers, con-
sult the dealer where you purchased the oil.
G When replacing oils used to lubricate the
product (engine or gear oil), be sure to wipe
away any spilt oil. Never pour oil without us-
ing a funnel or similar device. If necessary,
verify the necessary replacement proce-
dure with the dealer.
G Never illegally discard (dump) the product.
Yamaha recommends consulting the deal-
er on discarding the product.
Be informed about boating safety. Additional
publications and information can be obtained
from many organizations, including the follow-
ing:
EMU25401
Label
EWM01260
WARNING
G Be sure shift control is in neutral before
starting engine. (except 2HP)
G Do not touch or remove electrical parts
when starting or during operation.
G Keep hands, hair, and clothes away from
flywheel and other rotating parts while
engine is running.
4
General information
EMU25413
the “give-way” or “burdened” vessel. These
rules determine which vessel has the right-of-
way, and what each vessel should do.
Stand-on vessel
The vessel with the right-of-way has the duty
to continue its course and speed, except to
avoid an immediate collision. When you main-
tain your direction and speed, the other vessel
will be able to determine how best to avoid
you.
Label (counter rotation models)
EWM01281
WARNING
Use only a counterclockwise rotation pro-
peller with this engine.
Counterclockwise propellers are marked
with a letter “L” after the size indication.
The wrong type of propeller could cause
the boat to go in an unexpected direction,
which could lead to an accident.
Give-way vessel
EMBU25a500sic boating rules (Rules of
The vessel which does not have the right-of-
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-of-way. You should
slow down or change directions briefly and
pass behind the other vessel. You should al-
ways move in such a way that the operator of
the other vessel can see what you are doing.
“The general prudential rule”
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 inter-
nationally, and are also enforced by the Unit-
ed States Coast Guard and local agencies.
You should be aware of these rules, and fol-
low them whenever you encounter another
vessel on the water.
This rule is called Rule 2 in the International
Rules and says,
“In obeying and construing these rules due re-
gard shall be had to all dangers of navigation
and collision, and to any special circumstanc-
es, which may render a departure from the
above rules necessary in order to avoid im-
mediate danger.”
In other words, follow the standard rules ex-
cept when a collision will occur unless both
vessels try to avoid each other. If that is the
case, both vessels become “Give-Way” ves-
sels.
ERMuU2l5e52s0 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:
Several sets of rules prevail according to geo-
graphic 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 Auxiliary or Department of
Motor Vehicles for a complete set of rules
governing the waters in which you will be us-
ing your boat.
ESMtUe25e51r0ing 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
Meeting: (you are approaching another ves-
sel head-on)
5
General information
Crossing: (you are traveling across the other Crossing
When two power driven vessels are crossing
vessel’s path)
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, provid-
ed the other vessel gives you the right-of-way
as it should.
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 meeting vessel
must alter course to avoid each other.
Meeting
If you are meeting another power vessel head Overtaking
If you are passing another vessel, you are the
on, and are close enough to run the risk of col-
lision, neither of you has the right-of-way!
Both of you should alter course to avoid an ac-
cident. You should keep the other vessel on
your port (left) side. This rule doesn’t apply if
both of you will clear one another if you con-
tinue on your set course and speed.
“Give-Way” vessel. This means that the other
vessel is expected to maintain its course and
speed. You must stay out of its 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.
EMU25530
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
6
General information
vessels, the operator should sound a pro- proceeding from open water into port, and
longed blast on the whistle (4 to 6 seconds). If black buoys are to port (left) side. When navi-
another vessel is around the bend, it too gating out of port, your position with respect to
should sound the whistle. Even if no reply is the buoys should be reversed; red buoys
heard, however, the vessel should still pro- should be to port and black buoys to star-
ceed around the bend with caution. If you nav- board.
igate such waters with your boat, you will Many bodies of water used by boaters are en-
need to carry a portable air horn, available tirely within the boundaries of a particular
from local marine supply stores.
Fishing vessel right-of-way
state. The Uniform State Waterway Marking
System has been devised for these waters.
This system uses buoys and signs with dis-
tinctive 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.
Remember, markings may vary by geograph-
ic location. Always consult local boating au-
thorities before driving your boat in unfamiliar
waters.
All vessels which are fishing with nets, lines or
trawls are considered to be “fishing vessels”
under the International Rules. Vessels with
trolling lines are not considered fishing ves-
sels. Fishing vessels have the right-of-way re-
gardless of position. Fishing vessels cannot,
however, impede the passage of other ves-
sels 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, num-
bers 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 be-
ing entered from seaward (the boater is going
towards the port). This means that red buoys
are passed on the starboard (right) side when
7
General information
ZMU01708
EMU25540
G Do not smoke when refueling, and keep
away from sparks, flames, or other
sources of ignition.
G Stop engine before refueling.
G Refuel in a well-ventilated area. Refuel
portable fuel tanks off the boat.
Fueling instructions
EWM00010
WARNING
GASOLINE AND ITS VAPORS ARE HIGH-
LY FLAMMABLE AND EXPLOSIVE!
8
General information
EEMnU3g14i4n0 e oil
G Take care not to spill gasoline. If gaso-
line spills, wipe it up immediately with
dry rags.
Recommended engine oil:
YAMALUBE 4-M FC-W oil or 4-stroke
motor oil with a combination of the fol-
lowing SAE and API oil classifications
Engine oil type SAE:
10W-30 or 10W-40
Engine oil grade API:
SE, SF, SG, SH, SJ, SL
Engine oil quantity (excluding oil filter):
5.6 L (5.92 US qt) (4.93 Imp.qt)
G Do not overfill the fuel tank.
G Tighten the filler cap securely after refu-
eling.
G If you should swallow some gasoline, in-
hale a lot of gasoline vapor, or get gaso-
line in your eyes, get immediate medical
attention.
G If any gasoline spills onto your skin, im-
mediately wash with soap and water.
Change clothing if gasoline spills on it.
G Touch the fuel nozzle to the filler open-
ing or funnel to help prevent electrostat-
ic sparks.
NOTE:
If the recommended engine oil grades are not
available, select an alternative from the fol-
lowing chart according to the average temper-
atures in your area.
ECM00010
CAUTION:
Use only new clean gasoline which has
been stored in clean containers and is not
contaminated with water or foreign matter.
EMU25570
Gasoline
If knocking or pinging occurs, use a different
brand of gasoline or premium unleaded fuel.
Recommended gasoline:
Regular unleaded gasoline with a mini-
mum octane rating of 86 (Pump Oc-
tane Number) = (R+M)/2
Gasohol
There are two types of gasohol: gasohol con-
taining 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. Yamaha
does not recommended gasohol containing
methanol because it can cause fuel system
damage or engine performance problems.
ECM01050
CAUTION:
All 4-stroke engines are shipped from the
factory without engine oil.
9
General information
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.
Yamaha outboard motors are fitted with pro-
pellers 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 main-
tained. 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 appli-
cation.
ZMU01710
EMU25700
ECM01060
Battery requirement
CAUTION:
Do not use a battery that does not meet the
specified capacity. If a battery which does
not meet specifications is used, the elec-
tric system could perform poorly or be
overloaded, causing electric system dam-
age.
For electric start models, choose a battery
which meets the following specifications.
EBMaU2t5t71e1ry specifications
x
-
1
2 3
Minimum cold cranking amps
(CCA/SAE):
512.0 A
ZMU04607
Minimum marine cranking amps
(MCA/ABYC):
675.0 A
Minimum reserve capacity (RC/SAE):
182 minutes
1. Propeller diameter in inches
2. Propeller pitch in inches
3. Type of propeller (propeller mark)
NOTE:
Select a propeller which will allow the engine
to reach the middle or upper half of the oper-
ating range at full throttle with the maximum
boat load. If operating conditions such as light
boat loads then allow the engine r/min to rise
above the maximum recommended range, re-
duce the throttle setting to maintain the en-
gine in the proper operating range.
NOTE:
The engine cannot be started if battery volt-
age is too low.
EMU25742
Propeller selection
The performance of your outboard motor will
be critically affected by your choice of propel-
ler, as an incorrect choice could adversely af-
fect performance and could also seriously
10
General information
For instructions on propeller removal and in-
stallation, see page 64.
EMU25770
Start-in-gear protection
Yamaha outboard motors or Yamaha-ap-
proved remote control units are equipped with
start-in-gear protection device(s). This feature
permits the engine to be started only when it
is in neutral. Always select neutral before
starting the engine.
11
Basic components
EMU25799
Main components
NOTE:
* May not be exactly as shown; also may not be included as standard equipment on all models.
1. Top cowling
2. Anti-cavitation plate
3. Trim tab (anode)
4. Propeller*
5. Cooling water inlet
6. Clamp bracket
7. Water separator
8. Top cowling lock lever(s)
9. Power trim and tilt switch
10.Flushing device
11.Remote control box (side mount type)*
12.Remote control box (binnacle mount type)*
13.Switch panel (for use with binnacle type)*
14.Digital speedometer*
15.Digital tachometer*
16.Fuel management meter*
12
Basic components
3
1
2
5
4
6
ZMU05429
1. Tachometer unit (Square type)*
2. Tachometer unit (Round type)*
3. Speedometer unit (Square type)*
4. Speed & fuel meter unit (Square type)*
5. Speed & fuel meter unit (Round type)*
6. Fuel management meter (Square type)*
ERMeU2m618o0 te control
The remote control lever actuates both the
shifter and the throttle. The electrical switches
are mounted on the remote control box.
1. Power trim and tilt switch
2. Remote control lever
3. Neutral interlock trigger
4. Neutral throttle lever
5. Main switch / choke switch
6. Engine stop lanyard switch
7. Throttle friction adjuster
13
Basic components
N
1
1
F
R
2
4
4
2
3
6
6
5
5
4
2
7
3
7
ZMU04569
ZMU04573
1. Remote control lever
2. Power trim and tilt switch
3. Free accelerator
1. Neutral “ ”
2. Forward “ ”
3. Reverse “ ”
4. Shift
4. Throttle friction adjuster
5. Fully closed
6. Throttle
7. Fully open
ERMeU2m619o0 te control lever
Moving the lever forward from the neutral po-
sition engages forward gear. Pulling the lever
back from neutral engages reverse. The en-
gine 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.
ENMeU2u62t01ral interlock trigger
To shift out of neutral, first pull the neutral in-
terlock trigger up.
1. Neutral interlock trigger
ENMeU2u62t1r1 al throttle lever
To open the throttle without shifting into either
forward or reverse, put the remote control le-
ver in the neutral position and lift the neutral
throttle lever.
1. Neutral “ ”
2. Forward “ ”
3. Reverse “ ”
4. Shift
5. Fully closed
6. Throttle
7. Fully open
14
Basic components
G After the button is pushed, the throttle be-
gins to open after the remote control lever is
moved at least 35°.
G After using the free accelerator, return the
remote control lever to the neutral position.
The free accelerator button will return auto-
matically to its set position. The remote con-
trol will then engage forward and reverse
normally.
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.
EMU25971
Throttle friction adjuster
A friction device provides adjustable resis-
tance to movement of the throttle grip or the
remote control lever, and can be set accord-
ing to operator preference.
To increase resistance, turn the adjuster
clockwise. To decrease resistance, turn the
adjuster counterclockwise.
EWM00031
1. Fully open
2. Fully closed
EMU26232
WARNING
Free accelerator
Do not overtighten the friction adjuster. If
there is too much resistance, it could be
difficult to move the remote control lever
or throttle grip, which could result in an
accident.
To open the throttle without shifting into either
forward or reverse, push the free accelerator
button and move the remote control lever.
2
3
1
ZMU04575
1. Fully open
2. Fully closed
3. Free accelerator
NOTE:
G The free accelerator button can only be
used when the remote control lever is in the
neutral position.
15
Basic components
NOTE:
The engine cannot be started with the lock
plate removed.
ZMU04646
When constant speed is desired, tighten the
adjuster to maintain the desired throttle set-
ting.
EEMnU2g59i9n0 e stop lanyard switch
1. Lanyard
2. Lock plate
The lock plate 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 ig-
nition to the engine. This will prevent the boat
ON
ON
START
OFF
START OFF
2
from running away under power.
EWM00120
1
WARNING
ZMU04564
G Attach the engine stop switch lanyard to
a secure place on your clothing, or your
arm or leg while operating.
1. Lanyard
2. Lock plate
G Do not attach the lanyard to clothing
that could tear loose. Do not route the
lanyard where it could become entan-
gled, preventing it from functioning.
G 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.
EMU26090
Main switch
The main switch controls the ignition system;
its operation is described below.
G “
With the main switch in the “
tion, the electrical circuits are off, and the key
can be removed.
” (off)
” (off) posi-
G “ ” (on)
With the main switch in the “ ” (on) position,
the electrical circuits are on, and the key can-
not be removed.
G “
” (start)
16
Basic components
With the main switch in the “
” (start) po-
sition, the starter motor turns to start the en-
gine. When the key is released, it returns
automatically to the “ ” (on) position.
EPMoU2w615e1 r trim and tilt switch on bottom
engine cowling
The power trim and tilt switch is located on the
side of the bottom engine cowling. Pressing
the switch “ ” (up) trims the outboard motor
ON
START
ON
OFF START
up, then tilts it up. Pressing the switch “
”
OFF
(down) tilts the outboard motor down and
trims it down. When the switch is released,
the outboard motor will stop in its current po-
sition.
EWM01030
WARNING
Use the power trim and tilt switch located
on the bottom engine cowling only when
the boat is at a complete stop with the en-
gine off. Attempting to use this switch
while the boat is moving could increase
the risk of falling overboard and could dis-
tract the operator, increasing the risk of
collision with another boat or an obstacle.
ZMU04566
EPMoU2w614e1 r trim and tilt switch on remote
control or tiller handle
The power trim and tilt system adjusts the out-
board motor angle in relation to the transom.
Pressing the switch “ ” (up) trims the out-
board motor up, then tilts it up. Pressing the
switch “ ” (down) tilts the outboard motor
down and trims it down. When the switch is re-
leased, the outboard motor will stop in its cur-
rent position.
NOTE:
For instructions on using the power trim and
tilt switch, see pages 43 and 45.
17
Basic components
EWM00840
NOTE:
WARNING
For instructions on using the power trim and
tilt switch, see page 45.
An improperly adjusted trim tab could
cause difficult steering. Always test run af-
ter the trim tab has been installed or re-
placed to be sure steering is correct. Be
sure you have tightened the bolt after ad-
justing the trim tab.
EPMoU2w616e1 r trim and tilt switches (twin bin-
nacle type)
The power trim and tilt system adjusts the out-
board motor angle in relation to the transom.
Pushing the switch “ ” (up) trims the out-
board motor up, then tilts it up. Pressing the
switch “ ” (down) tilts the outboard motor
down and trims it down. When the switch is re-
leased, the outboard motor will stop in its cur-
rent position.
If the boat tends to veer the left (port side),
turn the trim tab rear end to the port side “A” in
the figure. If the boat tends to veer the right
(starboard side), turn the trim tab end to the
starboard side “B” in the figure.
ECM00840
CAUTION:
The trim tab also serves as an anode to
protect the engine from electrochemical
corrosion. Never paint the trim tab as it will
become ineffective as an anode.
1
DN
UP
ZMU04601
1. Power trim and tilt switch
NOTE:
G On the dual engine control, the switch on
the remote control grip controls both out-
board motors at the same time.
G For instructions on using the power trim and
tilt switches, see pages 43 and 45.
EMU26241
Trim tab with anode
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.
1. Trim tab
2. Bolt
18
Basic components
3. Cap
EMU26340
Tilt support lever for power trim and
tilt or hydro tilt model
To keep the outboard motor in the tilted up po-
sition, lock the tilt support lever to the clamp
bracket.
EMU26460
Flushing device
This device is used to clean the cooling water
passages of the motor using a garden hose
and tap water.
NOTE:
ZMU01864
For details on usage, see page 54.
EMU26382
Top cowling lock lever (pull up type)
To remove the engine top cowling, pull up the
lock lever(s) and lift off the cowling. When in-
stalling the cowling, check to be sure it fits
properly in the rubber seal. Then lock the
cowling by moving the lever(s) downward.
19
Basic components
G If the warning system has activated, stop
the engine and consult a Yamaha dealer
immediately.
EDMiUg31i4t1a0 l tachometer
The tachometer shows the engine speed and
has the following functions.
NOTE:
All segments of the display will light momen-
tarily after the main switch is turned on and
will return to normal thereafter.
1
2
3
4
1. Flushing device
5
7
6
ZMU01840
EMU31702
Water separator
1. Tachometer
2. Trim meter
3. Hour meter
4. Low oil pressure warning indicator
5. Overheat warning indicator
6. Set button
This engine has a combination fuel filter/water
separator and associated warning system. If
water separated from the fuel exceeds a spe-
cific volume, the warning device will activate.
7. Mode button
NOTE:
The water separator warning indicator and
engine trouble warning indicator on the digital
tachometer do not operate for this engine.
EMU26522
Low oil pressure warning indicator
If oil pressure drops too low, the warning indi-
cator will start to blink. For further information,
see page 33.
Activation of warning device
G The water separator warning indicator will
blink.
G The buzzer will sound intermittently only
when the gear shift is in neutral.
20
Basic components
ECM00020
CAUTION:
G Do not continue to run the engine if the
low oil pressure warning indicator is on
and the engine oil level is lower. Serious
engine damage will occur.
G The low oil pressure warning indicator
does not indicate the engine oil level.
Use the oil dipstick to check the remain-
ing oil quantity. For further information,
see page 37.
1
ZMU01737
1. Overheat warning indicator
ESMpU2e66e00dometer (digital type)
This gauge shows the boat speed.
1
ZMU01736
1. Low oil pressure warning indicator
EMU26581
Overheat warning indicator (digital
1. Speedometer
type)
2. Fuel gauge
3. Trip meter/clock/voltmeter
4. Warning indicator(s)
If the engine temperature rises too high, the
warning indicator will start to blink. For further
information on reading the indicator, see page
33.
ECM00050
NOTE:
After the main switch is first turned on, all seg-
ments of the display come on as a test. After
a few seconds, the gauge will change to nor-
mal operation. Watch the gauge when turning
on the main switch to make sure all segments
come on.
CAUTION:
Do not continue to run the engine if the
overheat warning indicator is on. Serious
engine damage will occur.
21
Basic components
NOTE:
The speedometer displays km/h, mph, or
knots, according to operator preference. Se-
lect the desired unit of measurement by set-
ting the selector switch on the back of the
gauge. See the illustration for settings.
ZMU01740
EHMoU2u665r0 meter (digital type)
This meter shows the number of hours the en-
gine 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.
1. Cap
2. Selector switch (for speed unit)
3. Selector switch (for fuel sensor)
EMU26620
Trim meter (digital type)
This meter shows the trim angle of your out-
board motor.
NOTE:
G Memorize the trim angles that work best for
your boat under different conditions. Adjust
the trim angle to the desired using the pow-
er trim and tilt switch.
ZMU01741
G Changing the display format
Pressing the “
” (mode) button chang-
G If the trim angle of your motor exceeds the
trim operating range, the top segment on
the trim meter display will blink.
es the display format in the following pat-
tern:
Total hours→Trip hours→Display off
G Resetting the trip hours
Simultaneously pressing the “ ” (set) and
“
” (mode) buttons for more than 1 sec-
ond while the trip hours are displayed re-
sets the trip counter to 0 (zero).
NOTE:
The total number of hours the engine has
been run cannot be reset.
22
Basic components
EMU26690
Trip meter
This gauge displays the distance the boat has
traveled since the gauge was last reset.
Press the “
until the indicator on the face of the gauge
points to “ ” (trip). To reset the trip meter to
” (mode) button repeatedly
zero, press the “ ” (set) and “
” (mode)
buttons at the same time.
NOTE:
The clock operates on battery power. Discon-
necting the battery will stop the clock. Reset
the clock after connecting the battery.
EMU26710
Fuel gauge
The fuel level is indicated by eight segments.
When all segments are showing, the fuel tank
is full.
ECM00860
NOTE:
G The trip distance is shown in kilometers or
miles depending upon the unit of measure-
ment selected for the speedometer.
G The trip distance is kept in memory by bat-
tery power. The stored data will be lost if the
battery is disconnected.
CAUTION:
The Yamaha fuel tank sensor differs from
conventional sensors. Incorrectly setting
the selector switch on the gauge will give
false readings. Consult your Yamaha deal-
er on how to correctly set the selector
switch.
ECMlUo26c70k0
Press the “
until the indicator on the face of the gauge
points to “ ” (time). To set the clock, be
sure the gauge is in the “ ” (time) mode.
Press the “ ” (set) button; the hour display
will begin blinking. Press the “ ” (mode)
” (mode) button repeatedly
NOTE:
The fuel level 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.
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 dis-
played. Press the “ ” (set) button again to
start the clock.
23
Basic components
ZMU01745
1. Low battery indicator
EMU26720
Fuel warning indicator
If the fuel level decreases to one segment, the
EMU26740
Fuel management meter
The fuel management meter shows the state
of the fuel consumption while the engine is
running.
fuel level warning segment will begin to blink.
ECM00880
CAUTION:
Do not continue to operate the engine with
full throttle if a warning device has activat-
ed. Get back to the port within trolling en-
gine speed.
1
2
3
ZMU01748
1. Fuel flow meter
2. Fuel consumption meter / Fuel economy
meter / Twin engine speed synchronizer
3. Water separator warning indicator (operates
only if the sensor has been installed)
1. Fuel level warning segment
NOTE:
EMU26730
After the main switch is first turned on, all seg-
ments of the display come on as a test. After
a few seconds, the gauge will change to nor-
mal operation. Watch the gauge when turning
on the main switch to make sure all segments
come on.
Low battery voltage warning indicator
If battery voltage drops, the display will auto-
matically turn on and begin to blink.
ECM00870
CAUTION:
Get back to the port soon if a warning de-
vice has activated. For charging the bat-
tery, consult your Yamaha dealer.
24
Basic components
EMU26750
Fuel flow meter
The fuel flow meter displays the amount of
fuel flow over a one hour period, at the current
rate of engine operation.
If twin engines are installed on your boat, the
fuel flow meter displays the total fuel flow of
both the port and starboard engines. It also
displays “ ” (for port and starboard).
1. Selector switch
G The fuel consumption meter and fuel econ-
omy meter will indicate the same unit of
measurement.
EMU26760
Fuel consumption meter
This gauge displays the total amount of fuel
ZMU01749
consumed since the gauge was last reset.
Press the “
until the indicator on the face of the gauge
points to total “ ” (total). To reset the total
fuel consumption to zero, press the “ ” (set)
” (mode) button repeatedly
Use the “ ” (set) button to rotate the fuel flow
display in the following order:
G Press the “ ” (set) button once to display
the fuel flow of the starboard engine. An “ ”
(for starboard) will also be displayed.
G Press the “ ” (set) button a second time to
display the fuel flow of the port engine. A “ ”
(for port) will also be displayed.
and “
” (mode) buttons at the same time.
G Press the “ ” (set) button a third time to
return the display to the total fuel flow of
both engines. “ ” (for port and starboard)
will also be displayed to indicate both the
port and starboard engines.
ZMU01751
NOTE:
EMU26770
G The fuel flow meter displays gallons/hour or
liters/hour according to operator prefer-
ence. Select the desired unit of measure-
ment by setting the selector switch on the
back of the gauge during installation.
Fuel economy
This gauge displays the distance per liter or
gallon when cruising, and is only for reference
use by the operator.
Press the “
until the indicator on the face of the gauge
points to “ ” (economy).
” (mode) button repeatedly
25
Basic components
even of the same basic dimensions of the
same design, can also cause a slight varia-
tion in fuel consumption.
EMU26780
Twin-engine speed synchronizer
This gauge displays the difference in engine
speed (r/min) between the port and starboard
engines for reference purposes when syn-
chronizing the two engines’ speeds.
ZMU01752
Press the “
” (mode) button repeatedly
until the indicator on the face of the gauge
NOTE:
points to “
” (synchronizer).
If twin engines are installed on your boat, the
gauge will only display the total fuel economy
of both engines.
NOTE:
G Fuel consumption varies greatly with boat
design, weight, propeller used, engine trim
angle, sea conditions (including wind), and
throttle position. Fuel consumption also var-
ies slightly with the type of water (salt, fresh,
and contaminate levels), air temperature
and humidity, cleanliness of the boat bot-
tom, engine mounting height, skill of the op-
erator, and individual gasoline formulation
(winter or summer fuel and amount of addi-
tives).
G 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 dis-
tance can vary greatly from the actual dis-
tance traveled because of water currents,
sea swells, and the condition of the water
speed sensor (partially plugged or dam-
aged).
ZMU01753
1
2
3
4
5
ZMU01754
1. Port engine speed is higher
2. Port engine speed is slightly higher
3. Engine speed is synchronized evenly be-
tween port and starboard engines
4. Starboard engine speed is slightly higher
5. Starboard engine speed is higher
G 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,
26
Basic components
EMU31680
NOTE:
Tachometer unit
If the two engines’ speeds are not synchro-
nized while cruising, they can be synchro-
nized by adjusting trim angle or throttle.
The tachometer shows the engine revolutions
per minute. It has functions of trim meter, ad-
justing trolling speed, cooling water/engine
temperature display, battery voltage display,
total hour/trip hour display, oil pressure dis-
play, water detection warning, engine trouble
warning, and periodic maintenance notifica-
tion. If optional sensors are connected to the
unit, cooling water pressure display will be
available. For the optional sensor, consult
your Yamaha dealer. The tachometer unit is
available in round or square types. Check
your tachometer unit type.
EMU26791
Water separator warning indicator
This indicator will blink when water has accu-
mulated in the water separator. In such an
event, stop the engine and drain the water
from the separator.
NOTE:
This indicator only operates when a water
separator sensor is equipped.
2
1
ZMU05415
ZMU01755
1. Set button
2. Mode button
ECMoU3m1640mand link multifunction meters
Command link multifunction meters have 6
kinds of meter units; tachometer unit (square
or round types), speedometer unit (square
type), speed & fuel meter unit (square or
round types), and fuel management meter
(square type). The indicator system is slightly
different between the round and square types.
Check the model and type of your unit careful-
ly. This manual describes mainly the warning
indicators. For more details on setting meters
or changing indicator systems, see the at-
tached operation manual.
1
5
4
2
3
7
6
8
1. Tachometer
2. Trim meter
ZMU05416
3. Multifunction display
4. Cooling water pressure
5. Cooling water/engine temperature
27
Basic components
Preoperation checks
6. Water detection warning indicator
7. Battery voltage
8. Oil pressure (4-stroke models)
Place the gear shift lever in neutral and turn
the main switch to “ ” (on). After all the dis-
plays come on and the total hour display
comes on, the gauge will change to normal
operation. If the buzzer sounds and the water
separator warning indicator blinks, consult
your Yamaha dealer immediately.
NOTE:
To stop the buzzer, press the “ ” (set) or
1
2
“
” (mode) button.
ZMU05417
Low oil pressure warning
When the engine oil pressure drops too low,
the low oil pressure warning indicator will start
to blink, and the engine speed will automati-
cally decrease to about 2000 r/min.
1. Set button
2. Mode button
1
4 5 2
3
ZMU05418
6
7
8 9
1. Tachometer
ZMU05430
2. Trim meter
3. Multifunction display
4. Water detection warning indicator
5. Engine trouble warning/maintenance indica-
tor
6. Cooling water pressure
7. Oil pressure (4-stroke models)
8. Cooling water/engine temperature
9. Battery voltage
NOTE:
ZMU05431
The tachometer unit shows various kinds of
information according to the setting made us-
Stop the engine immediately if the buzzer
sounds and the low oil pressure warning indi-
cator blinks. Check the engine oil quantity and
replenish oil if necessary. If the warning de-
ing the “ ” (set) and “
For details, see the attached operation manu-
al.
” (mode) buttons.
28
Basic components
ECM01590
vice has activated while the appropriate en-
gine oil quantity is maintained, consult your
CAUTION:
G Do not continue to run the engine if the
overheat warning indicator blinks. Seri-
ous engine damage will occur.
Yamaha dealer.
ECM01600
CAUTION:
Do not continue to run the engine if the G Do not continue to operate the engine if
low oil pressure warning device has acti-
vated. Serious engine damage will occur.
a warning device has activated. Consult
your Yamaha dealer if the problem can-
not be located and corrected.
Overheat warning
If the engine temperature rises too high while
Water separator warning
cruising, the overheat warning indicator will This indicator will blink when water has accu-
start to blink. The engine speed will automati- mulated in the water separator (fuel filter)
cally decrease to about 2000 r/min.
while cruising. In such an event, stop the en-
gine immediately and see page 74 of this
manual to drain the water from the fuel filter.
Get back to the port soon and consult a
Yamaha dealer immediately.
ZMU05421
ZMU05423
ZMU05422
Stop the engine immediately if the buzzer
sounds and the overheat warning device has
activated. Check the cooling water inlet for
clogging.
ZMU05424
29
Basic components
ECM00910
port soon if the low battery voltage warning
device has activated. For charging the bat-
tery, consult your Yamaha dealer.
CAUTION:
Gasoline mixed with water could cause
damage to the engine.
Engine trouble warning
This indicator will blink when the engine mal-
functions while cruising. Get back to the port
soon and consult a Yamaha dealer immedi-
ately.
ZMU05427
ZMU05425
ZMU05428
ESMpU3e16e10d & fuel meter unit
This unit shows the boat speed and has the
functions of fuel meter, total fuel consumption
display, fuel economy display, fuel flow dis-
play, and system voltage display. If optional
sensors are connected to the unit, trip display,
water surface temperature display, depth dis-
play, and clock will be available. For the op-
tional sensor, consult your Yamaha dealer.
The speed & fuel meter unit is available in
round or square types. Check your speed &
fuel meter unit type.
ZMU05426
ECM00920
CAUTION:
In such an event, the engine will not oper-
ate properly. Consult a Yamaha dealer im-
mediately.
Low battery voltage warning
When the battery voltage drops, the low bat-
tery voltage warning indicator and the battery
voltage value will start to blink. Get back to the
30
Basic components
1
2
2
1
ZMU05432
ZMU05435
3
1. Set button
2. Mode button
1. Speedometer
2. Fuel meter
3. Multifunction display
1
3
NOTE:
After the main switch is first turned on, all the
displays come on as a test. After a few sec-
onds, the gauge will change to normal opera-
tion.
2
NOTE:
The speed & fuel meter unit shows various
kinds of information according to the setting
ZMU05433
1. Speedometer
2. Fuel meter
3. Multifunction display
made with the “ ” (set) and “
” (mode)
buttons. For details, see the attached opera-
tion manual.
ESMpU3e16e20dometer unit
This unit shows the boat speed and has func-
tions of fuel meter and system voltage dis-
play. If optional sensors are connected to the
unit, trip display, water surface temperature
display, depth display, and clock will be avail-
able. For the optional sensor, consult your
Yamaha dealer.
1
2
ZMU05434
1. Set button
2. Mode button
31
Basic components
EMU31630
Fuel management meter
This meter has functions of fuel flow meter, to-
tal consumption display, fuel economy dis-
play, and remaining fuel display.
2
1
ZMU05436
1. Set button
2. Mode button
2
1
1
3
ZMU05438
1. Set button
2. Mode button
1
2
ZMU05437
1. Speedometer
2. Fuel meter
3. Multifunction display
2
ZMU05439
NOTE:
1. Fuel flow meter
2. Multifunction display
After the main switch is first turned on, all the
displays come on as a test. After a few sec-
onds, the gauge will change to normal opera-
tion.
NOTE:
After the main switch is first turned on, all the
displays come on as a test. After a few sec-
onds, the gauge will change to normal opera-
tion.
NOTE:
The speedometer unit shows various kinds of
information according to the setting made us-
ing the “ ” (set) and “
” (mode) buttons.
NOTE:
In addition, the speedometer can show the
desired unit of measurement such as km/h,
mph, or knots. For details, see the attached
operation manual.
The fuel management meter shows various
kinds of information when the operator uses
the “ ” (set) and “
details, see the attached operation manual.
” (mode) buttons. For
32
Basic components
EMU26801
ECM00090
Warning system
CAUTION:
ON
ON
OFF START
OFF START
Do not continue to operate the engine if a
warning device has activated. Consult
your Yamaha dealer if the problem cannot
be located and corrected.
EMU26824
ZMU04584
Overheat warning (twin engines)
This engine has an overheat warning device.
If the engine temperature rises too high, the
warning device will activate.
If the warning system has activated, stop the
engine and check the cooling water inlet for
clogging.
Activation of warning device
G The engine speed will automatically de-
crease to about 2000 r/min.
NOTE:
Dual engine drive users:
Should the overheat warning system of one
engine activate, the engine will slow down
and the buzzer will sound. This will cause the
other engine to slow down and the buzzer to
sound. To switch off the warning activation on
the engine not affected by overheating, turn
off the main switch of the engine overheating.
G If equipped with an overheat warning indi-
cator, it will light or blink.
EMU26855
Low oil pressure warning
If the oil pressure drops too low, the warning
device will activate.
Activation of warning device
ZMU01757
G The engine speed will automatically de-
crease to about 2000 r/min.
G The buzzer will sound.
G The low oil pressure warning indicator will
light or blink.
ZMU01828
33
Basic components
G The buzzer will sound.
ON
ON
OFF START
OFF START
ZMU04584
If the warning system has activated, stop the
engine as soon as it is safe to do so. Check
the oil level and add oil as needed. If the oil
level is correct and the warning device does
not switch off, consult your Yamaha dealer.
ECM00100
CAUTION:
Do not continue to run the engine if the
low oil pressure warning indicator is on.
Serious engine damage could occur.
34
Operation
EMU26901
EWM00830
Installation
WARNING
ECM00110
Improper mounting of the outboard motor
could result in hazardous conditions such
as poor handling, loss of control, or fire
hazards. Observe the following:
G For permanently mounted models, your
dealer or other person experienced in
proper rigging should mount the motor.
If you are mounting the motor yourself,
you should be trained by an experienced
person.
CAUTION:
Incorrect engine height or obstructions to
smooth water flow (such as the design or
condition of the boat, or accessories such
as transom ladders or depth finder trans-
ducers) can create airborne water spray
while the boat is cruising. Severe engine
damage may result if the motor is operat-
ed continuously in the presence of air-
borne water spray.
G For portable models, your dealer or oth-
er person experienced in proper out-
board motor mounting should show you
how to mount your motor.
NOTE:
During water testing check the buoyancy of
the boat, at rest, with its maximum load.
Check that the static water level on the ex-
haust housing is low enough to prevent water
entry into the powerhead, when water rises
due to waves when the outboard is not run-
ning.
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.
EMU26910
Mounting the outboard motor
EWM00820
WARNING
G Overpowering a boat could cause se-
vere instability. Do not install an out-
board 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.
G The information presented in this sec-
tion is intended as reference only. It is
not possible to provide complete in-
structions for every possible boat and
motor combination. Proper mounting
depends in part on experience and the
specific boat and motor combination.
1
ZMU01760
1. Center line (keel line)
35
Operation
NOTE:
G The optimum mounting height of the out-
board motor is affected by the boat/motor
combination and the desired use. Test runs
at different heights can help determine the
optimum mounting height. Consult your
Yamaha dealer or boat manufacturer for
further information on determining the prop-
er mounting height.
G For instructions on setting the trim angle of
the outboard motor, see page 43.
1. Center line (keel line)
EMU26930
Mounting height (boat bottom)
EMU30173
To run your boat at optimum efficiency, the
water resistance (drag) of the boat and out-
board motor must be made as little as possi-
ble. 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;
Breaking in engine
Your new engine requires a period of break-in
to allow mating surfaces of moving parts to
wear in evenly. Correct break-in will help en-
sure proper performance and longer engine
life.
ECM00800
and if the propeller tips cut the air, the engine CAUTION:
speed will rise abnormally and cause the en-
gine to overheat. If the mounting height is too
low, the water resistance will increase and
thereby reduce engine efficiency. Mount the
outboard motor so that the anti-cavitation
plate is in alignment with the bottom of the
boat.
Failure to follow the break-in procedure
could result in reduced engine life or even
severe engine damage.
EPMrUo27c081edure for 4-stroke models
Run the engine under load (in gear with a pro-
peller installed) for 10 hours as follows.
1. First hour:
Run the engine at 2000 r/min or at ap-
proximately half throttle.
2. Second hour:
Run the engine at 3000 r/min or at ap-
proximately three-quarter throttle.
3. Remaining eight hours:
Run the engine at any speed. However,
avoid operating at full throttle for more
than 5 minutes at a time.
ZMU01762
4. After the first 10 hours:
Operate the engine normally.
36
Operation
EMU27103
EWM00080
ESMtUo31p720switches
G Confirm that turning the main switch to the
Preoperation checks
WARNING
“
” (off) position stops the engine.
G Confirm that removing the lock plate from
the engine stop switch stops the engine.
G Confirm that the engine cannot be started
with the lock plate removed from the engine
stop switch.
If any item in the preoperation check is not
working properly, have it inspected and
repaired before operating the outboard
motor. Otherwise an accident could occur.
ECM00120
EEMnU2g71i5n0 e
CAUTION:
G Check the engine and engine mounting.
G Look for loose or damaged fasteners.
G Check the propeller for damage.
G Check that the battery is in good condition
and the battery connections are secure.
ECMhU3e13c41king the engine oil level
1. Put the outboard motor in an upright po-
sition (not tilted).
2. Remove oil dipstick and wipe it clean.
3. Completely insert the dipstick and re-
move it again.
4. Check the oil level using the dipstick to be
sure the level falls between the upper lev-
el mark “ ” and lower level mark “ ” . Fill
with oil if it is below the lower level mark
“ ” , or drain to the specified level if it is
above the upper level mark “ ” .
Do not start the engine out of water. Over-
heating and serious engine damage can
occur.
EMU31550
Fuel
G Check to be sure you have plenty of fuel for
your trip.
G Make sure there are no fuel leaks or gaso-
line fumes.
G Check fuel line connections to be sure they
are tight (if equipped Yamaha fuel tank or
boat tank).
G Be sure the fuel tank is positioned on a se-
cure, flat surface, and that the fuel line is not
twisted or flattened, or likely to contact
sharp objects (if equipped Yamaha fuel
tank or boat tank).
G Check the water in the fuel filter with the wa-
ter separator warning device. Place the
gear shift lever in neutral and turn the main
switch to “ ”(on). If the buzzer sounds and
the water separator warning indicator
blinks, consult your Yamaha dealer imme-
diately.
ECMoU3n17t10rols
G Check throttle, shift, and steering for proper
operation before starting the engine.
G The controls should work smoothly, without
binding or unusual free play.
1. Oil dipstick
2. Lower level mark “ ”
3. Upper level mark “ ”
G Look for loose or damaged connections.
37
Operation
bly the critical piston-ring-land area, and fuel
system components. Follow product labeling
for use instructions.
EMU27450
NOTE:
Be sure to completely insert the dipstick into
the dipstick guide.
Operating engine
EMU30021
EMU27482
Filling fuel
Feeding fuel
EWM00420
EWM00060
WARNING
WARNING
Gasoline and its vapors are highly flam-
mable and explosive. Keep away from
sparks, cigarettes, flames, or other sourc-
es of ignition.
G 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.
1. Remove the fuel tank cap.
G When the air vent screw is loosened,
gasoline vapor will be released. Gaso-
line 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.
G This product emits exhaust gases which
contain carbon monoxide, a colorless,
odorless gas which could cause brain
damage or death when inhaled. Symp-
toms include nausea, dizziness, and
drowsiness. Keep cockpit and cabin ar-
eas well ventilated. Avoid blocking ex-
haust outlets.
2. Carefully fill the fuel tank.
3. Securely close the cap after filling the
tank. Wipe up any spilled fuel.
ERMiUn27g270Free Fuel Additive
Gasoline is a precise blend of many different
substances, each chosen to give certain char-
acteristics. Gasoline blends have been
changing in recent years in response to con-
cerns about pollution and resulting emissions
regulations. One of the most obvious changes
has been the elimination of lead from most fu-
els.
As gasoline has changed, the amount of addi-
tives 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,
because of increased deposits in the combus-
tion chamber. When enough deposits collect,
piston rings begin sticking. Performance
drops and engine wear increases dramatical-
ly.
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 pump, with the arrow
pointing up, until you feel it become firm.
While many additives available may reduce
deposits, Yamaha recommends the use of
Ring Free Fuel Additive, available from your
Yamaha dealer. Ring Free Fuel Additive
has repeatedly proven its ability to clean com-
bustion deposits from inside the engine, nota-
38
Operation
2. 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 into the en-
gine stop switch.
EWM00120
WARNING
G Attach the engine stop switch lanyard to
a secure place on your clothing, or your
arm or leg while operating.
1. Arrow
G Do not attach the lanyard to clothing
that could tear loose. Do not route the
lanyard where it could become entan-
gled, preventing it from functioning.
G 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.
ESMtUa27r4t90ing engine
EMU27624
Electric start and remote control models
1. Place the remote control lever in “ ”
(neutral).
NOTE:
The start-in-gear protection device prevents
the engine from starting except when in neu-
tral.
N
ON
ON
START
OFF
START OFF
ZMU04588
ZMU04589
39
Operation
3. Turn the main switch to “ ” (on).
NOTE:
ON
OFF
START
Dual engine users: When the main switch is
turned on, the buzzer operates for a few sec-
onds then stops automatically. The buzzer
also operates if one of the engines stalls.
ZMU01881
ON START
4. Turn the main switch to “
” (start),
and hold it for a maximum of 5 seconds.
5. Immediately after the engine starts, re-
ZMU04590
lease the main switch to return it to “
”
EMU27670
(on).
Warming up engine
EEMlUe30c03t1ric start models
ECM00191
CAUTION:
G Never turn the main switch to “
(start) while the engine is running.
1. After starting the engine, allow it to idle for
3 minutes to warm up. Failure to do so will
shorten engine life.
”
G Do not keep the starter motor turning for
more than 5 seconds. If the starter motor
is turned continuously for more than 5
seconds, the battery will be quickly dis-
charged, thus making it impossible to
start the engine. The starter can also be
damaged. If the engine will not start after
5 seconds of cranking, return the main
switch to “ ” (on), wait 10 seconds,
then crank the engine again.
2. Be sure the low oil pressure warning indi-
cator remains off after starting the en-
gine.
3. Check for a steady flow of water from the
cooling water pilot hole.
ECM01341
CAUTION:
G If the low oil pressure warning indicator
blinks after the engine starts, stop the
engine. Otherwise serious engine dam-
age could occur. Check the oil level and
add oil if necessary. Consult your
Yamaha dealer if the cause for the low
oil pressure warning indicator cannot be
found.
40
Operation
G A continuous flow of water from the pilot back to neutral. If this occurs, stop the en-
hole shows that the water pump is gine, shift to neutral, then restart the en-
pumping water through the cooling pas- gine and allow it to warm up.
sages. If water is not flowing out of the
To shift out of neutral
1. Pull the neutral interlock trigger up (if
pilot hole at all times while the engine is
running, overheating and serious dam-
age could occur. Stop the engine and
equipped).
check whether the cooling water inlet on
the lower case or the cooling water pilot
hole is blocked. Consult your Yamaha
dealer if the problem cannot be located
and corrected.
G If the cooling passage is frozen, it may
take awhile for water to start flowing out
of the pilot hole.
1. Neutral interlock trigger
2. Move the remote control lever firmly and
crisply forward (for forward gear) or back-
ward (for reverse gear) about 35° (a de-
tent can felt).
EMU31730
Shifting
EWM00180
WARNING
Before shifting, make sure there are no
swimmers or obstacles in the water near
you.
ECM01610
CAUTION:
Warm up the engine before shifting into
gear. Until the engine is warm, the idle
speed may be higher than normal. High
idle speed can prevent you from shifting
41
Operation
To shift from in gear (forward/reverse) to neu-
tral
N
1. Close the throttle so that the engine
slows to idle speed.
ZMU04588
EMU31741
EWM01510
Braking
WARNING
G Do not use the reverse function to slow
down or stop the boat as it could cause
you to lose control, be ejected, or impact
the steering wheel or other parts of the
boat. This could increase the risk of se-
rious injury. It could also damage the
shift mechanism.
G Do not shift into reverse while traveling
at planing speeds. Loss of control, boat
swamping, or damage to the boat could
occur.
2. After the engine is at idle speed in gear
move the remote control lever firmly and
crisply into the neutral position.
The boat is not equipped with a separate
braking system. It is stopped by water resis-
tance after the throttle lever is moved back to
idle. The stopping distance varies depending
on gross weight, water surface conditions,
and wind direction.
EMU27820
Stopping engine
Before stopping the engine, first let it cool off
for a few minutes at idle or low speed. Stop-
ping the engine immediately after operating at
high speed is not recommended.
EPMrUo27c852edure
1. Turn the main switch to “
” (off).
42
Operation
engine, and propeller. Correct trim is also af-
fected by variables such as the load in the
boat, sea conditions, and running speed.
EWM00740
WARNING
Excessive trim for the operating condi-
tions (either trim up or trim down) can
cause boat instability and can make steer-
ing 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.
OFFON
OFFON
ZMU04600
2. After stopping the engine, disconnect the
fuel line or close the fuel cock if there is a
fuel joint or a fuel cock on the boat.
3. Tighten the air vent screw on the fuel tank
cap (if equipped).
1. Trim operating angle
EAMdU2j7u88s2 ting trim angle
Power trim and tilt models
4. Remove the key if the boat will be left un-
attended.
EWM00751
WARNING
NOTE:
G Be sure all people are clear of the out-
board motor when adjusting the tilt an-
gle, also be careful not to pinch any
body parts between the drive unit and
clamp bracket.
The engine can also be stopped by pulling the
lanyard and removing the clip from the engine
stop switch, then turning the main switch to
“
” (off).
G Use caution when trying a trim position
for the first time. Increase speed gradu-
ally and watch for any signs of instability
or control problems. Improper trim an-
gle can cause loss of control.
G If equipped with a power trim and tilt
switch located on the bottom cowling,
use the switch only when the boat is at a
EMU27T861rimming outboard motor
The trim angle of the outboard motor helps
determine the position of the bow of the boat
in the water. Correct trim angle will help im-
prove performance and fuel economy while
reducing strain on the engine. Correct trim an-
gle depends upon the combination of boat,
43
Operation
complete stop with the engine off. Do To lower the bow (trim-in), press the switch
not adjust the trim angle with this switch
while the boat is moving.
“
” (down).
Make test runs with the trim set to different an-
gles to find the position that works best for
your boat and operating conditions.
EAMdU2j7u91s1 ting boat trim
Adjust the outboard motor trim angle using
the power trim and tilt switch.
When the boat is on plane, a bow-up attitude
results in less drag, greater stability and effi-
ciency. 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 tenden-
cy to steer to one side or the other. Compen-
sate for this as you steer. The trim tab can
also be adjusted to help offset this effect.
When the bow of the boat is down, it is easier
to accelerate from a standing start onto plane.
1. Power trim and tilt switch
1
DN
UP
ZMU04601
1. Power trim and tilt switch
Bow Up
Too much trim-out puts the bow of the boat
too high in the water. Performance and econ-
omy 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 perfor-
mance further, and the boat may “porpoise”
(hop in the water), which could throw the op-
erator and passengers overboard.
1. Power trim and tilt switch
To raise the bow (trim-out), press the switch
“
” (up).
44
Operation
EWM01540
WARNING
Be sure all people are clear of the out-
board motor when tilting up and down,
also be careful not to pinch any body parts
between the drive unit and engine bracket.
ECM00991
CAUTION:
G Before tilting the outboard motor, follow
the procedure under “Stopping engine”
in this chapter. Never tilt the outboard
motor while the engine is running. Se-
vere damage from overheating can re-
sult.
G To prevent the cooling water passages
from becoming frozen when the ambient
temperature is 5°C or below, tilt the out-
board motor up after it has been
stopped 30 seconds or more.
Bow Down
Too much trim-in causes the boat to “plow”
through the water, decreasing fuel economy
and making it hard to increase speed. Operat-
ing 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 opera-
tion difficult and dangerous.
EPMrUo28c00e7 dure for tilting up (power trim
and tilt models / power tilt models)
1. Place the remote control lever / gear shift
lever in neutral.
N
NOTE:
Depending on the type of boat, the outboard
motor trim angle may have little effect on the
trim of the boat when operating.
ZMU03196
EMU27942
Tilting up and down
If the engine will be stopped for some time or
if the boat is moored in shallows, the outboard
motor should be tilted up to protect the propel-
ler and lower case from damage by collision
with obstructions, and also to reduce salt cor-
rosion.
45
Operation
N
ZMU04588
4. Push the tilt support knob into the clamp
bracket or pull the tilt support lever toward
you to support the engine.
2. Disconnect the fuel line from the out-
board motor or close the fuel cock.
3. Press the power trim and tilt switch / pow-
er tilt switch “ ” (up) until the outboard
motor has tilted up completely.
ZMU01886
EWM00260
WARNING
After tilting the outboard motor, be sure to
support it with the tilt support knob or tilt
support lever. Otherwise the outboard mo-
tor could fall back down suddenly if oil in
the power trim and tilt unit loses pressure.
UP
5. Models equipped with trim rods: Once the
outboard motor is supported with the tilt
support lever, press the power trim and
tilt switch / power tilt switch “ ” (down) to
retract the trim rods.
ZMU04602
46
Operation
ECM00250
CAUTION:
Be sure to retract the trim rods completely
during mooring. This protects the rods
from marine growth and corrosion which
could damage the power trim and tilt
mechanism.
UP
DN
DN
ZMU01936
DN
ZMU01884
EPMrUo28c05e5 dure for tilting down (power trim
and tilt models / power tilt models)
1. Push the power trim and tilt switch / pow-
er tilt switch “ ” (up) until the outboard
motor is supported by the tilt rod and the
tilt support lever / tilt support knob be-
comes free.
ZMU04603
2. Release the tilt support lever or pull out
the tilt support knob.
EMU28060
Cruising in shallow water
The outboard motor can be tilted up partially
to allow operation in shallow water.
EPMoU3w071e0 r trim and tilt models / power tilt
models
ZMU01885
The outboard motor can be tilted up partially
3. Push the power trim and tilt switch / pow-
er tilt switch “ ” (down) to lower the out-
board motor to the desired position.
to allow operation in shallow water.
47
Operation
EWM00660
N
WARNING
G Place the gear shift in neutral before set-
ting up for shallow water cruising.
G Return the outboard motor to its normal
position as soon as the boat is back in
deeper water.
ECM01490
CAUTION:
ZMU04588
G If the engine speed is suddenly in-
creased when the outboard motor is par-
tially tilted up, the power trim and tilt unit
could be damaged.
2. Slightly tilt the outboard motor up to the
desired position using the power trim and
tilt switch / power tilt switch.
G Do not tilt the outboard motor up so that
the cooling water inlet on the lower unit
is above the surface of the water when
setting up for and cruising in shallow
water. Otherwise severe damage from
overheating can result.
EMU28185
Procedure for power trim and tilt / power
tilt models
1. Place the remote control lever / gear shift
3. To return the outboard motor to the nor-
mal running position, press the power
trim and tilt switch / power tilt switch and
lever in neutral.
EMU28192
Cruising in other conditions
Cruising in salt water
After operating in salt water, flush the cooling
water passages with fresh water to prevent
them from becoming clogged with salt depos-
its.
NOTE:
For cooling system flushing instructions, see
page 51.
48
Operation
Cruising in turbid water
Yamaha strongly recommends that you use
the optional chromium-plated water pump kit
(not available for some models) if you use the
outboard motor in turbid or muddy water con-
ditions.
49
Maintenance
EMU31480
Spark plug gap:
Specifications
1.0–1.1 mm (0.039–0.043 in)
Control system:
NOTE:
Remote control
“(AL)” stated in the specification data below
represents the numerical value for the alumi-
num propeller installed.
Likewise, “(SUS)” represents the value for
stainless steel propeller installed and “(PL)”
for plastic propeller installed.
Starting system:
Electric
Starting carburetion system:
Electronic fuel injection
Valve clearance (cold engine) IN:
0.17–0.23 mm (0.0067–0.0091 in)
Valve clearance (cold engine) EX:
0.31–0.37 mm (0.0122–0.0146 in)
Min. cold cranking amps (CCA/SAE):
512.0 A
Min. marine cranking amps (MCA/ABYC):
675.0 A
Min. reserve capacity (RC/SAE):
182 minutes
Alternator output for battery DC:
45.0 A
Drive unit:
Gear positions:
Forward-neutral-reverse
Gear ratio:
2.00 (30/15)
Trim and tilt system:
Power trim and tilt
Propeller mark:
F200TR T / M
F225TR T / M
LF200TR TL / ML
LF225TR TL / ML
EMU28218
Dimension:
Overall length:
892 mm (35.1 in)
Overall width:
634 mm (25.0 in)
Overall height X:
1805 mm (71.1 in)
Transom height X:
643 mm (25.3 in)
Weight (without propeller) X:
265.0 kg (584 lb)
Performance:
Full throttle operating range:
5000–6000 r/min
Maximum output:
F200TR 147.1 kW@5500 r/min (200
HP@5500 r/min)
F225TR 165.5 kW@5500 r/min (225
HP@5500 r/min)
LF200TR 147.1 kW@5500 r/min (200
HP@5500 r/min)
LF225TR 165.5 kW@5500 r/min (225
HP@5500 r/min)
Idling speed (in neutral):
700 50 r/min
Engine:
Type:
4-stroke V
Displacement:
3352.0 cm³ (204.54 cu.in)
Bore × stroke:
94.0 × 80.5 mm (3.70 × 3.17 in)
Ignition system:
TCI
Fuel and oil:
Recommended fuel:
Regular unleaded gasoline
Min. pump octane:
86
Recommended engine oil:
4-stroke outboard motor oil
Engine oil grade API:
API SE, SF, SG, SH, SJ, SL
Engine oil type SAE:
SAE10W30 or SAE10W40
Lubrication:
Wet sump
Engine oil quantity (excluding oil filter):
5.6 L (5.92 US qt) (4.93 Imp.qt)
Recommended gear oil:
Hypoid gear oil SAE#90
Spark plug (NGK):
LFR5A-11
50
Maintenance
ECM00660
Gear oil quantity:
F200TR 1150.0 cm³ (38.88 US oz) (40.56
Imp.oz)
F225TR 1150.0 cm³ (38.88 US oz) (40.56
Imp.oz)
LF200TR 1000.0 cm³ (33.81 US oz) (35.27
Imp.oz)
LF225TR 1000.0 cm³ (33.81 US oz) (35.27
Imp.oz)
CAUTION:
Do not use the tilt support lever or knob
when trailering the boat. The outboard mo-
tor could shake loose from the tilt support
and fall. If the motor cannot be trailered in
the normal running position, use an addi-
tional support device to secure it in the tilt
position.
Tightening torque for engine:
Spark plug:
25.0 Nm (18.4 ft-lb) (2.55 kgf-m)
Propeller nut:
55.0 Nm (40.6 ft-lb) (5.61 kgf-m)
Engine oil drain bolt:
28.0 Nm (20.7 ft-lb) (2.86 kgf-m)
Engine oil filter:
The outboard motor should be trailered and
stored in the normal running position. If there
is insufficient road clearance in this position,
then trailer the outboard motor in the tilt posi-
tion using a motor support device such as a
transom saver bar. Consult your Yamaha
dealer for further details.
18.0 Nm (13.3 ft-lb) (1.84 kgf-m)
EMU28222
Transporting and storing out-
ESMtUo30r06i1ng outboard motor
board motor
EWM00690
When storing your Yamaha outboard motor
for prolonged periods of time (2 months or
longer), several important procedures must
be performed to prevent excessive damage. It
is advisable to have your outboard motor ser-
viced by an authorized Yamaha dealer prior to
storage. However, you, the owner, with a min-
imum of tools, can perform the following pro-
WARNING
G Leaking fuel is a fire hazard. When trans-
porting and storing the outboard motor,
close the air vent screw and fuel cock to
prevent fuel from leaking.
G USE CARE when transporting fuel tank,
whether in a boat or car.
G DO NOT fill fuel container to maximum
capacity. Gasoline will expand consider-
cedures.
ECM01360
ably as it warms up and can build up CAUTION:
pressure in the fuel container. This can
cause fuel leakage and a potential fire
hazard.
G To prevent problems which can be
caused by oil entering the cylinder from
the sump, keep the outboard motor in
the attitude shown when transporting
and storing it. Do not store or transport
the outboard motor on its side (not up-
right).
G Do not place the outboard motor on its
side before the cooling water has
drained from it completely, otherwise
water may enter the cylinder through the
exhaust port and cause engine trouble.
EWM00700
WARNING
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
motor accidentally falls.
51
Maintenance
ECM00310
G Store the outboard motor in a dry, well-
CAUTION:
ventilated place, not in direct sunlight.
Avoid running the outboard motor at high
speed while on the flushing attachment,
otherwise overheating could occur.
ZMU04261
EPMrUo28c30e3 dure
EMU30740
Flushing with the flushing attachment
1. Flushing attachment
1. Wash the outboard motor body using
fresh water. For further information, see
page 55.
2. 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.
5. Cooling system flushing is essential to
prevent the cooling system from clogging
up with salt, sand, or dirt. In addition, fog-
ging/lubricating of the engine is mandato-
ry to prevent excessive engine damage
due to rust. Perform the flushing and fog-
ging at the same time.
EWM00090
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.
WARNING
G Do not touch or remove electrical parts
when starting or during operation.
G Keep hands, hair, and clothes away from
the flywheel and other rotating parts
while the engine is running.
3. Remove the top cowling and propeller.
4. Install the flushing attachment over the
NOTE:
cooling water inlet.
ECM00300
G When using the flushing attachment, main-
tain adequate water pressure so that there
is a steady flow of water from the cooling
water pilot hole.
G If the overheat warning device is activated,
turn the engine off, and consult your
Yamaha dealer.
CAUTION:
Do not run the engine without supplying it
with cooling water. Either the engine water
pump will be damaged or the engine will
be damaged from overheating. Before
starting the engine, be sure to supply wa-
ter to the cooling water passages.
52
Maintenance
6. Run the engine at a fast idle for a few 3. Wax the cowling with a non-abrasive wax
minutes in neutral position while supply-
ing fresh water.
such as “Yamaha Silicone Wax” (Part No.
ACC-11000-15-02).
EBMaU2t8t43e0ry care
7. Just prior to turning off the engine, quickly
spray “Yamaha Stor-Rite Engine Fogging
Oil” (Part No. LUB-STRRT-12-00) alter-
nately into the intake silencer or the fog-
ging hole of the silencer cover, if
equipped. When properly done, the en-
gine will smoke excessively and almost
stall.
8. Remove the flushing attachment and
wipe off any excess water.
9. Install the top cowling and propeller.
10. Drain the cooling water completely out of
the motor. Clean the body thoroughly.
EWM00330
WARNING
Battery electrolytic fluid is dangerous; it
contains sulfuric acid and therefore is poi-
sonous and highly caustic.
Always follow these preventive measures:
G Avoid bodily contact with electrolytic
fluid as it can cause severe burns or per-
manent eye injury.
G Wear protective eye gear when handling
or working near batteries.
Antidote (EXTERNAL):
G SKIN - Flush with water.
A flushing attachment is available from your G EYES - Flush with water for 15 minutes
NOTE:
Yamaha dealer.
and get immediate medical attention.
Antidote (INTERNAL):
EMU28401
G 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 hydro-
gen gas; therefore, you should always fol-
low these preventive measures:
G Charge batteries in a well-ventilated ar-
ea.
G Keep batteries away from fire, sparks, or
open flames (for example: welding
equipment, lighted cigarettes, and so
on.)
G DO NOT SMOKE when charging or han-
dling batteries.
Lubrication
the spark plug(s) and torque to proper
specification. For information on spark
plug installation, see page 58.
2. Change the gear oil. For instructions, see
page 66. Inspect the oil for the presence
of water that indicates a leaky seal. Seal
replacement should be performed by an
authorized Yamaha dealer prior to use.
3. Grease all grease fittings. For further de-
tails, see page 58.
ECMlUe28a42n1 ing and anticorrosion measures
1. Wash down the exterior of the outboard
motor with fresh water and dry off com-
pletely.
2. Spray the outboard motor exterior with
“Yamaha Silicone Protectant” (Part No.
LUB-SILCNE-13-00).
KEEP BATTERIES AND ELECTROLYTIC
FLUID OUT OF REACH OF CHILDREN.
53
Maintenance
Batteries vary among manufacturers. There-
fore the following procedures may not always
apply. Consult your battery manufacturer’s in-
structions.
Procedure
1. Disconnect and remove the battery from
the boat. Always disconnect the black
negative cable first to prevent the risk of
shorting.
2. Clean the battery casing and terminals.
Fill each cell to the upper level with dis-
tilled water.
3. Store the battery on a level surface in a
cool, dry, well-ventilated place out of di-
rect sunlight.
4. Once a month, check the specific gravity
of the electrolyte and recharge as re-
quired to prolong battery life.
EMU28442
Flushing power unit
Perform this procedure right after operation
for the most thorough flushing.
ECM01530
1. Fitting
2. Garden hose connector
3. Garden hose adapter
CAUTION:
2. Screw the garden hose adapter onto a
garden hose, which is connected to a
fresh water supply, and then connect it to
the garden hose connector.
3. With the engine off, turn on the water tap
and let the water flush through the cool-
ing passages for about 15 minutes. Turn
off the water and disconnect the garden
hose adapter from the garden hose con-
nector.
Do not perform this procedure while the
engine is running. The water pump may be
damaged and severe damage from over-
heating can result.
1. After shutting off the engine, unscrew the
garden hose connector from the fitting on
the bottom cowling.
4. Reinstall the garden hose connector onto
the fitting on the bottom cowling. Tighten
the connector securely.
ECM00540
CAUTION:
Do not leave the garden hose connector
loose on the bottom cowling fitting or let
the hose hang free during normal opera-
tion. Water will leak out of the connector
54
Maintenance
EMU28486 Periodic maintenance
instead of cooling the engine, which can
connector is tightened securely on the fit-
ting after flushing the engine.
EWM01070
WARNING
Be sure to turn off the engine when you
perform maintenance unless otherwise
specified. If you or the owner is not famil-
iar with machine servicing, this work
should be done by your Yamaha dealer or
other qualified mechanic.
NOTE:
G When flushing the engine with the boat in
the water, tilting up the outboard motor until
it is completely out of the water will achieve
better results.
G For cooling system flushing instructions,
see page 51.
Maintenance, replacement, or repair of the
emission control devices and systems
may be performed by any marine engine
repair establishment or individual. All war-
ranty repairs, however, including those to
the emission control system, must be per-
formed by an authorized Yamaha marine
dealership.
ECMlUe28a45n0 ing the outboard motor
After use, wash the exterior of the outboard
motor with fresh water. Flush the cooling sys-
tem with fresh water.
A service manual is available for purchase
through your Yamaha dealer for owners who
have the mechanical skills, tools, and other
equipment necessary to perform mainte-
nance not covered by this owner’s manual.
ERMeU2p85l1a0 cement parts
If replacement parts are necessary, use only
genuine Yamaha parts or parts of the same
type and of equivalent strength and materials.
Any part of inferior quality may malfunction,
and the resulting loss of control could endan-
ger the operator and passengers. Yamaha
genuine parts and accessories are available
from your Yamaha dealer.
NOTE:
For cooling system flushing instructions, see
page 51.
ECMhU2e84c60king painted surface of motor
Check the motor for scratches, nicks, or flak-
ing paint. Areas with damaged paint are more
likely to corrode. If necessary, clean and paint
the areas. A touch-up paint is available from
your Yamaha dealer.
55
Maintenance
EMU30563
Maintenance chart
NOTE:
G Refer to the sections in this chapter for explanations of each owner-specific action.
G The maintenance cycle on these charts assume usage of 200 hours per year and regular
flushing of the cooling water passages. Maintenance frequency should be adjusted when op-
erating the engine under adverse conditions such as extended trolling.
G Disassembly or repairs may be necessary depending on the outcome of maintenance
checks.
G Expendable or consumable parts and lubricants will lose their effectiveness over time and
through normal usage regardless of the warranty period.
G When operating in salt water, turbid or muddy water, the engine should be flushed with clean
water after each use.
The “ ” symbol indicates the check-ups which you may carry out yourself.
The “ ” symbol indicates work to be carried out by your Yamaha dealer.
Initial
Every
Item
Actions
10 hours 50 hours 100 hours 200 hours
(1 month) (3 months) (6 months) (1 year)
Inspection / replace-
ment
Anode(s) (external)
Anode(s) (cylinder
head, thermostat cov-
er)
Inspection / replace-
ment
Battery
Inspection / charging
Cleaning
Cooling water passag-
es
Cowling clamp
Inspection
Fuel filter (can be dis-
assembled)
Inspection / replace-
ment
Fuel system
Inspection
Fuel tank (Yamaha por-
table tank)
Inspection / cleaning
Gear oil
Change
Greasing points
Idling speed
Greasing
Inspection
PCV (Pressure Con-
trol Valve)
Inspection
Power trim and tilt unit
Propeller and cotter pin
Shift link / shift cable
Inspection
Inspection / replace-
ment
Inspection / adjustment
56
Maintenance
Initial
10 hours
Every
Item
Actions
50 hours 100 hours 200 hours
(1 month) (3 months) (6 months) (1 year)
Inspection / replace-
ment
Thermostat
Throttle link / throttle
cable / throttle pick-up
timing
Inspection / adjustment
Inspection / replace-
ment
Water pump
Engine oil
Inspection / change
Change
Oil filter (cartridge)
Cleaning / adjustment /
replacement
Spark plug(s)
Inspection / replace-
ment
Timing belt
EMU28874
Maintenance chart (additional)
Every
500 hours (2.5 years) 1000 hours (5 years)
Item
Actions
Timing belt
Replacement
Inspection
Timing chain / chain
tensioner
Valve clearance
(DOHC)
Fuel filter (vapor sepa-
rator tank)
Inspection / adjustment
Replacement
Anode(s) (exhaust cov-
er, cover joint)
Replacement
Exhaust guide, exhaust Inspection / replace-
manifold
ment
EMU28910
NOTE:
When using lead or high-sulfur gasoline, inspecting valve clearance may be required more fre-
quently than every 500 hours.
57
Maintenance
EMU28931
Greasing
Yamaha marine grease (Water resistant grease)
ECMlUe28a95n2 ing and adjusting spark plug
be careful not to damage the insulator. A
damaged insulator could allow external
sparks, which could lead to explosion or
fire.
EWM00560
WARNING
When removing or installing a spark plug,
58
Maintenance
The spark plug is an important engine compo- When fitting the plug, always clean the gasket
nent and is easy to inspect. The condition of surface and use a new gasket. Wipe off any
the spark plug can indicate something about dirt from the threads and screw in the spark
the condition of the engine. For example, if the plug to the correct torque.
center electrode porcelain is very white, this
Spark plug torque:
could indicate an intake air leak or carburetion
25.0 Nm (18.4 ft-lb) (2.55 kgf-m)
problem in that cylinder. Do not attempt to di-
agnose any problems yourself. Instead, take
NOTE:
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 ex-
cessive, or if carbon and other deposits are
excessive, you should replace the spark plug
with another of the correct type.
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 cor-
rect torque as soon as possible with a torque-
wrench.
ECMhU2e89c62king fuel system
EWM00060
Standard spark plug:
LFR5A-11
WARNING
Gasoline and its vapors are highly flam-
mable and explosive. Keep away from
sparks, cigarettes, flames, or other sourc-
es of ignition.
Before fitting the spark plug, measure the
electrode gap with a wire thickness gauge;
adjust the gap to specification if necessary.
EWM00910
WARNING
Leaking fuel can result in fire or explosion.
G Check for fuel leakage regularly.
G If any fuel leakage is found, the fuel sys-
tem must be repaired by a qualified me-
chanic. Improper repairs can make the
outboard unsafe to operate.
Check the fuel lines for leaks, crack, or mal-
function. If a problem is found, your Yamaha
dealer or other qualified mechanic should re-
pair it immediately.
1. Spark plug gap
2. Spark plug part number
3. Spark plug I.D. mark (NGK)
Spark plug gap:
1.0–1.1 mm (0.039–0.043 in)
59
Maintenance
ECM01240
CAUTION:
Change the engine oil after the first 10
hours of operation, and every 100 hours or
at 6-month intervals thereafter. Otherwise
the engine will wear quickly.
NOTE:
Change the engine oil when the oil is still
warm.
The engine oil can be extracted with an oil
changer (recommended), or drained by re-
moving the oil drain screw.
Extracting the oil with an oil changer (normal
oil change)
1. Put the outboard motor in an upright po-
sition (not tilted).
Checkpoints
G Fuel system parts leakage
G Fuel line joint leakage
G Fuel line cracks or other damage
G Fuel connector leakage
ECMhU2a90n87ging engine oil
EWM00760
WARNING
2. Pull out the dipstick and use the oil
changer to extract the oil.
G Avoid draining the engine oil immediate-
ly after stopping the engine. The oil is
hot and should be handled with care to
avoid burns.
G Be sure the outboard motor is securely
fastened to the transom or a stable
stand.
60
Maintenance
3. Remove the oil filler cap. Add the correct
amount of oil through the filler hole, and
install the filler cap.
1. Oil dipstick
2. Lower level mark “ ”
3. Upper level mark “ ”
1. Oil filler cap
7. Start the engine and make sure that the
low oil pressure warning indicator re-
mains off. Also, make sure that there are
no oil leaks.
ECM01620
Recommended engine oil:
4-stroke outboard motor oil
Engine oil quantity (excluding oil filter):
5.6 L (5.92 US qt) (4.93 Imp.qt)
CAUTION:
ECM00970
If the low oil pressure warning indicator
comes on or if there are oil leaks, stop the
engine and find the cause. Continued op-
eration with a problem could cause severe
engine damage. Consult your Yamaha
dealer if the problem cannot be located
and corrected.
CAUTION:
G Do not overfill the oil, and be sure the
outboard motor is upright (not tilted)
when checking and changing the engine
oil.
G If the oil level is above the upper level
mark, drain until the level meets the
specified capacity. Overfilling the oil
could cause leakage or damage.
8. Turn off the engine and wait 3 minutes.
Recheck the oil level using the dipstick to
be sure the level falls between the upper
level mark “ ” and lower level mark “ ” .
Fill with oil if it is below the lower level
mark “ ” , or drain to the specified level if
it is above the upper level mark “ ” .
4. Remove oil dipstick and wipe it clean.
5. Completely insert the dipstick and re-
move it again.
6. Check the oil level using the dipstick to be
sure the level falls between the upper lev-
el mark “ ” and lower level mark “ ” . Fill
with oil if it is below the lower level mark
“ ” , or drain to the specified level if it is
above the upper level mark “ ” .
61
Maintenance
2. Tilt the outboard motor 5–10 degrees up,
then turn it entirely to the starboard side
until the drain screw is directly below.
3. Prepare a suitable container that holds a
larger amount than the engine oil capaci-
ty. Loosen and remove the drain screw
while holding the container under the
drain hole. Let the oil drain completely.
Wipe up any spilled oil immediately.
1. Oil dipstick
2. Lower level mark “ ”
3. Upper level mark “
”
9. Dispose of used oil according to local
regulations.
NOTE:
G For more information on the disposal of
used oil, consult your Yamaha dealer.
G Change the oil more often when operating
the engine under adverse conditions such
as extended trolling.
1. Drain screw
4. Put a new gasket on the oil drain screw.
Apply a light coat of oil to the gasket and
install the drain screw.
Draining the oil by removing the oil drain
screw
1. Remove the four bolts to remove the
apron from the starboard side.
Drain screw tightening torque:
28.0 Nm (20.7 ft-lb) (2.86 kgf-m)
NOTE:
G If a torque wrench is not available when you
are installing the drain screw, finger tighten
the screw just until the gasket comes into
contact with the surface of the drain hole.
Then tighten 1/4 to 1/2 turn more. Tighten
the drain screw to the correct torque with a
torque wrench as soon as possible.
G Apply grease to the apron retaining bolts
before tightening them.
5. Add the engine oil and check the oil level.
Refer to steps 3 to 9 in the previous oil
changing procedure with the oil changer.
62
Maintenance
ECMhU2e91c12king wiring and connectors
G Check that each grounding wire is properly
secured.
ECMhU2e91c53king power trim and tilt system
EWM00430
WARNING
G Never get under the lower unit while it is
tilted, even when the tilt support lever is
locked. Severe injury could occur if the
outboard motor accidentally falls.
G Make sure no one is under the outboard
motor before performing this test.
G Check that each connector is engaged se-
curely.
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 the remote control and en-
gine bottom cowling (if equipped) to
check that all switches work.
3. Tilt the outboard motor up and check that
the tilt rod and trim rods are extended
completely.
EEMxU2h91a20ust leakage
Start the engine and check that no exhaust
leaks from the joints between the exhaust
cover, cylinder head, and body cylinder.
1. Tilt rod
2. Trim rods
EMU29130
Water leakage
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
by the tilt support lever.
Start the engine and check that no water
leaks from the joints between the exhaust
cover, cylinder head, and body cylinder.
EEMnU2g91i4n0 e oil leakage
Check for oil leaks on the around the engine.
NOTE:
If any leaks are found, consult your Yamaha
dealer.
63
Maintenance
ECMhU2e91c71king propeller
EWM00321
WARNING
You could be seriously injured if the en-
gine accidentally starts when you are near
the propeller.
G Before inspecting, removing, or install-
ing the propeller, remove the spark plug
caps from the spark plugs. Also, place
the shift control in neutral, turn the main
1. Tilt support lever
switch to “
” (off) and remove the key,
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 retracted completely into the
cylinders.
and remove the lanyard from the engine
stop switch. Turn off the battery cut-off
switch if your boat has one.
G Do not use your hand to hold the propel-
ler when loosening or tightening the
propeller nut. Put a wood block between
the anti-cavitation plate and the propel-
ler to prevent the propeller from turning.
7. Activate the trim-up switch until the tilt rod
is fully extended. Unlock the tilt support
lever.
8. Tilt the outboard motor down. Check that
the tilt rod and trim rods operate smooth-
ly.
Checkpoints
G Check each of the propeller blades for
wear, erosion from cavitation or ventilation,
or other damage.
G Check the propeller shaft for damage.
G Check the splines / shear pin for wear or
damage.
NOTE:
Consult your Yamaha dealer if any operation
is abnormal.
G Check for fish line tangled around the pro-
peller shaft.
64
Maintenance
6. Thrust washer
3. Remove the propeller and thrust washer.
EInMUs30t6a70lling the Propeller
EMU29242
Spline models
EWM00770
WARNING
On counter rotation models, be sure to
use a propeller intended for counterclock-
wise rotation. These propellers are identi-
fied with the letter “L” after the size
indication on the propeller. Otherwise the
boat could move in the opposite direction
from that expected.
G Check the propeller shaft oil seal for dam-
age.
NOTE:
If the shear pin equipped: it is designed to
break if the propeller hits a hard underwater
obstacle to help protect the propeller and
drive mechanism. The propeller will then spin
freely on the shaft. If this happens, the shear
pin must be replaced.
ECM00340
CAUTION:
G Be sure to install the thrust washer be-
fore installing the propeller, otherwise
the lower case and propeller boss could
be damaged.
G Be sure to use a new cotter pin and bend
the ends over securely. Otherwise the
propeller could come off during opera-
tion and be lost.
ERMeU3m066o0 ving the propeller
EMU29194
Spline models
1. Straighten the cotter pin and pull it out us-
ing a pair of pliers.
2. Remove the propeller nut, washer, and
spacer (if equipped).
1. Apply Yamaha marine grease or a corro-
sion resistant grease to the propeller
shaft.
2. Install the thrust washer and propeller on
the propeller shaft.
3. Install the spacer and washer. Tighten
the propeller nut to the specified torque.
Propeller nut tightening torque:
55.0 Nm (40.6 ft-lb) (5.61 kgf-m)
4. Align the propeller nut with the propeller
shaft hole. Insert a new cotter pin in the
hole and bend the cotter pin ends.
1. Cotter pin
2. Propeller nut
3. Washer
4. Spacer
5. Propeller
65
Maintenance
NOTE:
If the propeller nut does not align with the pro-
peller shaft hole after tightening to the speci-
fied torque, tighten the nut further to align it
with the hole.
1. Gear oil drain screw
2. Oil level plug
3. Gasket
ECMhU2a92n82ging gear oil
EWM00800
NOTE:
WARNING
G If a magnetic gear oil drain screw is
equipped, remove all metal particles from
the screw before installing it.
G Always use new gaskets. Do not reuse the
removed gaskets.
G Be sure the outboard motor is securely
fastened to the transom or a stable
stand. You could be severely injured if
the outboard motor falls on you.
G Never get under the lower unit while it is
tilted, even when the tilt support lever or
knob is locked. Severe injury could oc-
cur if the outboard motor accidentally
falls.
4. Remove the oil level plug and gasket to
allow the oil to drain completely.
ECM00710
CAUTION:
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 re-
pair of the lower unit seals.
1. Tilt the outboard motor so that the gear oil
drain screw is at the lowest point possi-
ble.
2. Place a suitable container under the gear
case.
3. Remove the gear oil drain screw and gas-
ket.
NOTE:
For disposal of used oil, consult your Yamaha
dealer.
66
Maintenance
ECM00720
5. With the outboard motor in a vertical po-
sition, and using a flexible or pressurized
filling device, inject the gear oil into the
gear oil drain screw hole.
CAUTION:
Do not paint anodes, as this would render
them ineffective.
Recommended gear oil:
Hypoid gear oil SAE#90
Gear oil quantity:
F200TR 1150.0 cm³ (38.88 US oz)
(40.56 Imp.oz)
F225TR 1150.0 cm³ (38.88 US oz)
(40.56 Imp.oz)
NOTE:
Inspect ground leads attached to external an-
odes on equipped models. Consult a Yamaha
dealer for inspection and replacement of inter-
nal anodes attached to the power unit.
LF200TR 1000.0 cm³ (33.81 US oz)
(35.27 Imp.oz)
LF225TR 1000.0 cm³ (33.81 US oz)
(35.27 Imp.oz)
6. Put a new gasket on the oil level plug.
When the oil begins to flow out of the oil
level plug hole, insert and tighten the oil
level plug.
7. Put a new gasket on the gear oil drain
screw. Insert and tighten the gear oil
drain screw.
ZMU01902
ECMhU2e93c20king battery (for electric start
EInMUs29p31e2 cting and replacing anode(s)
Yamaha outboard motors are protected from
corrosion by sacrificial anodes. Inspect the
external anodes periodically. Remove scales
from the surfaces of the anodes. Consult a
Yamaha dealer for replacement of external
anodes.
models)
EWM00330
WARNING
Battery electrolytic fluid is dangerous; it
contains sulfuric acid and therefore is poi-
sonous and highly caustic.
Always follow these preventive measures:
67
Maintenance
G Avoid bodily contact with electrolytic
fluid as it can cause severe burns or per-
manent eye injury.
G Wear protective eye gear when handling
or working near batteries.
Antidote (EXTERNAL):
G SKIN - Flush with water.
G EYES - Flush with water for 15 minutes
and get immediate medical attention.
Antidote (INTERNAL):
G 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 hydro-
gen gas; therefore, you should always fol-
low these preventive measures:
G Charge batteries in a well-ventilated ar-
ea.
G Keep batteries away from fire, sparks, or
open flames (for example: welding
equipment, lighted cigarettes, and so
on.)
G DO NOT SMOKE when charging or han-
dling 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.
ECMoU3n005n1ecting the battery
KEEP BATTERIES AND ELECTROLYTIC
FLUID OUT OF REACH OF CHILDREN.
EWM00570
ECM00360
WARNING
CAUTION:
Mount the battery holder securely in a dry,
G A poorly maintained battery will quickly well-ventilated, vibration-free location in
deteriorate. the boat. Install a fully charged battery in
G Ordinary tap water contains minerals the holder.
harmful to a battery, and should not be
ECM01121
used for topping up.
CAUTION:
G Make sure the main switch (on applica-
1. Check the electrolyte level at least once a
month. Fill to the manufacturer’s recom-
mended level when necessary. Top up
only with distilled water (or pure de-ion-
ized water suitable to use in batteries).
ble models) is “
” (off) before working
on the battery.
G Reversal of the battery cables will dam-
age the electrical parts.
68
Maintenance
G Connect the red battery cable first when
installing the battery and disconnect the
black battery cable first when removing
it. Otherwise, the electrical parts can be
damaged.
G 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 battery cable to the POSI-
TIVE (+) terminal first. Then connect the
BLACK battery cable to the NEGATIVE (-) ter-
minal.
1. Battery for starting
2. Battery for accessories
3. Large red lead for starting battery
4. Small red lead for accessory battery charg-
ing (optional part)
5. Large black lead
6. Negative connecting cable
7. Power for accessories
NOTE:
If connecting an accessory battery, consult
your Yamaha dealer about correct wiring.
EDMiUs29c37o0 nnecting the battery
Disconnect the BLACK cable from the NEGA-
TIVE (-) terminal first. Then disconnect the
RED cable from the POSITIVE (+) terminal.
ECMhU2e93c90king top cowling
Check the fitting of the top cowling by pushing
it with both hands. If it is loose have it repaired
by your Yamaha dealer.
1. Red cable
2. Black cable
3. Battery
Connecting an accessory battery (optional)
1. Remove the accessory battery coupler
cover from the outboard motor.
2. Connect the accessory battery coupler to
the coupler of the accessory battery ca-
ble (optional). Use a connecting cable be-
tween the (-) terminals of the starting
battery and accessory battery. See the il-
lustrations of the wiring connections. This
cable must be made from wire thicker
than the starting battery cable.
EWM00600
WARNING
Use of smaller wire could lead to a fire.
69
Maintenance
ECMoU2a94t00ing the boat bottom
A clean hull improves boat performance. The
boat bottom should be kept as clean of marine
growth as possible. If necessary, the boat bot-
tom 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.
ZMU01943
70
Trouble Recovery
EMU29424
Q. Is fuel filter clogged?
A. Clean or replace filter.
Troubleshooting
A problem in the fuel, compression, or ignition
systems can cause poor starting, loss of pow-
er, or other problems. This section describes
basic checks and possible remedies, and cov-
ers all Yamaha outboard motors. Therefore
some items may not apply to your model.
If your outboard motor requires repair, bring it
to your Yamaha dealer.
Q. Is starting procedure incorrect?
A. See page 39.
Q. Has fuel pump malfunctioned?
A. Have serviced by a Yamaha dealer.
Q. Are spark plug(s) fouled or of incorrect
type?
A. Inspect spark plug(s). Clean or replace with
recommended type.
If the engine trouble warning indicator is flash-
ing, consult your Yamaha dealer.
Starter will not operate.
Q. Is battery capacity weak or low?
A. Check battery condition. Use battery of rec-
ommended capacity.
Q. Are spark plug cap(s) fitted incorrectly?
A. Check and re-fit cap(s).
Q. Is ignition wiring damaged or poorly con-
nected?
A. Check wires for wear or breaks. Tighten all
loose connections. Replace worn or broken
wires.
Q. Are battery connections loose or corrod-
ed?
A. Tighten battery cables and clean battery
terminals.
Q. Is fuse for electric start relay or electric cir-
cuit blown?
A. Check for cause of electric overload and
repair. Replace fuse with one of correct am-
perage.
Q. Are ignition parts faulty?
A. Have serviced by a Yamaha dealer.
Q. Is engine stop switch lanyard not at-
tached?
A. Attach lanyard.
Q. Are starter components faulty?
A. Have serviced by a Yamaha dealer.
Q. Are engine inner parts damaged?
A. Have serviced by a Yamaha dealer.
Q. Is shift lever in gear?
A. Shift to neutral.
Engine idles irregularly or stalls.
Q. Are spark plug(s) fouled or of incorrect
type?
A. Inspect spark plug(s). Clean or replace with
recommended type.
Engine will not start (starter operates).
Q. Is fuel tank empty?
A. Fill tank with clean, fresh fuel.
Q. Is fuel contaminated or stale?
A. Fill tank with clean, fresh fuel.
Q. Is fuel system obstructed?
71
Trouble Recovery
A. Check for pinched or kinked fuel line or oth- A. Return to home position.
er obstructions in fuel system.
Q. Is motor angle too high?
Q. Is fuel contaminated or stale?
A. Fill tank with clean, fresh fuel.
A. Return to normal operating position.
Q. Is carburetor clogged?
Q. Is fuel filter clogged?
A. Clean or replace filter.
A. Have serviced by a Yamaha dealer.
Q. Is fuel joint connection incorrect?
A. Connect correctly.
Q. Have ignition parts failed?
A. Have serviced by a Yamaha dealer.
Q. Is throttle valve adjustment incorrect?
A. Have serviced by a Yamaha dealer.
Q. Has warning system activated?
A. Find and correct cause of warning.
Q. Is battery cable disconnected?
A. Connect securely.
Q. Is spark plug gap incorrect?
A. Inspect and adjust as specified.
Warning buzzer sounds or indicator lights.
Q. Is ignition wiring damaged or poorly con- Q. Is cooling system clogged?
nected?
A. Check water intake for restriction.
A. Check wires for wear or breaks. Tighten all
loose connections. Replace worn or broken Q. Is engine oil level low?
wires.
A. Fill oil tank with specified engine oil.
Q. Is specified engine oil not being used?
A. Check and replace oil as specified.
Q. Is heat range of spark plug incorrect?
A. Inspect spark plug and replace it with rec-
ommended type.
Q. Is thermostat faulty or clogged?
A. Have serviced by a Yamaha dealer.
Q. Is specified engine oil not being used?
A. Check and replace oil with specified type.
Q. Are carburetor adjustments incorrect?
A. Have serviced by a Yamaha dealer.
Q. Is engine oil contaminated or deteriorated?
A. Replace oil with fresh, specified type.
Q. Is fuel pump damaged?
A. Have serviced by a Yamaha dealer.
Q. Is oil filter clogged?
A. Have serviced by a Yamaha dealer.
Q. Is air vent screw on fuel tank closed?
A. Open air vent screw.
Q. Has oil feed/injection pump malfunc-
tioned?
Q. Is choke knob pulled out?
A. Have serviced by a Yamaha dealer.
72
Trouble Recovery
Q. Is load on boat improperly distributed?
A. Remove foreign matter and clean lower
A. Distribute load to place boat on an even unit.
plane.
Q. Is fuel system obstructed?
Q. Is water pump or thermostat faulty?
A. Have serviced by a Yamaha dealer.
A. Check for pinched or kinked fuel line or oth-
er obstructions in fuel system.
Q. Is there excess water in fuel filter cup?
A. Drain filter cup.
Q. Is fuel filter clogged?
A. Clean or replace filter.
Engine power loss.
Q. Is propeller damaged?
Q. Is fuel contaminated or stale?
A. Fill tank with clean, fresh fuel.
A. Have propeller repaired or replaced.
Q. Is spark plug gap incorrect?
Q. Is propeller pitch or diameter incorrect?
A. Install correct propeller to operate outboard
at its recommended speed (r/min) range.
A. Inspect and adjust as specified.
Q. Is ignition wiring damaged or poorly con-
nected?
Q. Is trim angle incorrect?
A. Check wires for wear or breaks. Tighten all
A. Adjust trim angle to achieve most efficient loose connections. Replace worn or broken
operation. wires.
Q. Is motor mounted at incorrect height on Q. Have electrical parts failed?
transom?
A. Have serviced by a Yamaha dealer.
A. Have motor adjusted to proper transom
height.
Q. Is specified fuel not being used?
A. Replace fuel with specified type.
Q. Has warning system activated?
A. Find and correct cause of warning.
Q. Is specified engine oil not being used?
A. Check and replace oil with specified type.
Q. Is boat bottom fouled with marine growth?
A. Clean boat bottom.
Q. Is thermostat faulty or clogged?
A. Have serviced by a Yamaha dealer.
Q. Are spark plug(s) fouled or of incorrect
type?
Q. Is air vent screw closed?
A. Inspect spark plug(s). Clean or replace with A. Open the air vent screw.
recommended type.
Q. Is fuel pump damaged?
Q. Are weeds or other foreign matter tangled A. Have serviced by a Yamaha dealer.
on gear housing?
Q. Is fuel joint connection incorrect?
73
Trouble Recovery
A. Connect correctly.
If the outboard motor hits an object in the wa-
ter, follow the procedure below.
Q. Is heat range of spark plug incorrect?
A. Inspect spark plug and replace it with rec-
ommended type.
Q. Is high pressure fuel pump drive belt bro-
ken?
A. Have serviced by a Yamaha dealer.
Q. Is engine not responding properly to shift
lever position?
A. Have serviced by a Yamaha dealer.
1. Stop the engine immediately.
2. Inspect the control system and all compo-
nents for damage. Also inspect the boat
for damage.
Engine vibrates excessively.
Q. Is propeller damaged?
A. Have propeller repaired or replaced.
3. Whether damage is found or not, return
to the nearest harbor slowly and careful-
ly.
Q. Is propeller shaft damaged?
A. Have serviced by a Yamaha dealer.
4. Have a Yamaha dealer inspect the out-
board motor before operating it again.
ERMuU2n945n0ing single engine
Q. Are weeds or other foreign matter tangled
on propeller?
A. Remove and clean propeller.
When using only engine in an emergency, be
sure to keep the unused one tilted up and op-
erate the other engine at low speed.
Q. Is motor mounting bolt loose?
A. Tighten bolt.
ECM00370
CAUTION:
If the boat is operated with one engine in
the water but not running, water may run
into the exhaust pipe due to wave action,
causing engine trouble.
Q. Is steering pivot loose or damaged?
A. Tighten or have serviced by a Yamaha
dealer.
ETMeU29m433porary action in emergency
EImMU2p94a40ct damage
NOTE:
When you are maneuvering at low speed,
such as near a dock, it is recommended that
both engines be running with one in neutral
gear if possible.
EWM00870
WARNING
The outboard motor can be seriously dam-
aged by a collision while operating or
trailering. Damage could make the out-
board motor unsafe to operate.
74
Trouble Recovery
ERMeU2p94l9a2 cing fuse
If the fuse has blown on an electric start mod-
el, open the fuse box and use a fuse puller to
replace the fuse with a spare one of the prop-
er amperage.
EWM00630
WARNING
Be sure to use the specified fuse. An in-
correct fuse or a piece of wire could allow
excessive current flow. This could cause
electric system damage and a fire hazard.
1. Fuse box
2. Fuse puller
ECM01382
CAUTION:
G If a main fuse has blown, be sure to also
check the other main fuse.
G If the outboard motor is operated after a
main fuse has blown charging capability
will be insufficient, and the engine will
not start.
1. Spare fuse (5 A, 20 A, 30 A)
2. Engine control unit / ignition coil / electric
fuel pump / fuel injector / ISC (idle speed
control) fuse (20 A)
3. Rectifier Regulator (Accessory) fuse (30 A)
4. Main switch / trim switch fuse (20 A)
5. Fuel feed pump fuse (5 A)
6. Rectifier Regulator (Main) fuse (30 A)
7. Starter relay fuse (30 A)
75
Trouble Recovery
G This procedure will allow some fuel to
spill. Catch fuel in a rag. Wipe up any
spilled fuel immediately.
G The fuel filter must be reassembled
carefully with the O-ring, filter cup, and
hoses in place. Improper assembly or
replacement could result in a fuel leak,
which could result in a fire or explosion
hazard.
NOTE:
Consult your Yamaha dealer if the new fuse
immediately blows again.
EPMoU2w952e2 r trim and tilt / power tilt will not
operate
If the engine cannot be tilted up or down with
the power trim and tilt / the power tilt because
of a discharged battery or a failure with the
power trim and tilt unit / the power tilt unit, the
engine can be tilted manually.
If the water separator warning indicator on the
tachometer blinks, perform the following pro-
cedure.
1. Loosen the manual valve screw by turn-
ing it counterclockwise until it stops.
1
ZMU01905
1. Water separator warning indicator
1. Manual valve screw
1. Stop the engine.
2. Remove the top cowling.
3. Disconnect the water detection switch
2. Put the engine in the desired position,
then tighten the manual valve screw by
coupler.
ECM01570
turning it clockwise.
EMU31780
Water separator warning indicator
CAUTION:
blinks while cruising
Be careful not to get any water on the wa-
ter detection switch coupler, otherwise a
malfunction could occur.
EWM01500
WARNING
Gasoline is highly flammable, and its va-
pors are flammable and explosive.
G Do not perform this procedure on a hot
or running engine. Allow the engine to
cool.
G There will be fuel in the fuel filter. Keep
away from sparks, cigarettes, flames or
other sources of ignition.
76
Trouble Recovery
NOTE:
Properly dispose of the rag.
6. Firmly screw the filter cup onto the filter
housing.
NOTE:
Be careful not to twist the water detection
switch lead when screwing the filter cup onto
the filter housing.
7. Connect the water detection switch cou-
pler securely until a click is heard.
1. Water detection switch coupler
4. Unscrew the filter cup from the filter hous-
ing.
1. Water detection switch coupler
8. Install the top cowling.
NOTE:
Be careful not to twist the water detection
switch lead when unscrewing the filter cup.
9. Start the engine and make sure that the
water separator warning indicator re-
mains off.
NOTE:
Have a Yamaha dealer inspect the outboard
motor after returning to port.
EMU29760
Treatment of submerged motor
If the outboard motor is submerged, immedi-
ately take it to a Yamaha dealer. Otherwise
some corrosion may begin almost immediate-
ly.
If you cannot immediately take the outboard
motor to a Yamaha dealer, follow the proce-
dure below in order to minimize engine dam-
age.
1. Filter cup
2. Water detection switch lead
5. Drain the water in the filter cup by soaking
it up with a rag.
77
Trouble Recovery
EPMrUo29c97e0 dure
1. Thoroughly wash away mud, salt, sea-
weed, and so on, with fresh water.
2. Remove the spark plugs and face the
spark plug holes downward to allow any
water, mud, or contaminants to drain.
3. Drain the fuel from the vapor separator,
fuel filter, and fuel line.
4. Spray “Fogging Oil” or supply engine oil
through the intake manifold and spark
plug holes while rotating the flywheel
manually.
5. Take the outboard motor to a Yamaha
dealer as soon as possible.
ECM00400
CAUTION:
Do not attempt to run the outboard motor
until it has been completely inspected.
78
Consumer information
80
Consumer information
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