Yamaha F13.5A, F9.9C, FT9.9D, F15A User Manual
OWNER’S MANUAL
F9.9C
FT9.9D
F13.5A
F15A
66M-28199-79-E0
EMU25050
Read this owner’s manual carefully before operating your outboard motor.
Important manual information
EMU25100
To the owner
Thank you for choosing a Yamaha outboard
motor. This Owner’s Manual contains information needed for proper operation, maintenance and care. A thorough understanding
of these simple instructions will help you obtain maximum enjoyment from your new
Yamaha. If you have any question about the
operation or maintenance of your outboard
motor, please consult a Yamaha dealer.
In this Owner’s Manual particularly important
information is distinguished in the following
ways.
The Safety Alert Symbol means
ATTENTION! BECOME ALERT! YOUR
SAFETY IS INVOLVED!
EWM00780
WARNING
Failure to follow WARNING instructions
could result in severe injury or death
the machine operator, a bystander, or a
person inspecting or repairing the outboard motor.
ECM00700
CAUTION:
A CAUTION indicates special precautions
that must be taken to avoid damage to the
outboard motor.
to
al, please consult your Yamaha dealer.
NOTE:
The F9.9CMH, F9.9CE, FT9.9DMH,
FT9.9DE, F13.5AMH, F13.5AEP, F15AMH,
F15AEH, F15AE, F15AEP 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.
EMU25120
F9.9C, FT9.9D, F13.5A, F15A
OWNER’S MANUAL
©2004 by Yamaha Motor Co., Ltd.
1st Edition, March 2004
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Co., Ltd.
is expressly prohibited.
Printed in Japan
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 your machine and this manual. If
there is any question concerning this manu-
Table of contents
General information .......................... 1
Identification numbers record........... 1
Outboard motor serial number .......... 1
Key number....................................... 1
EC label............................................ 1
Emission control information ............ 2
SAV models ......................................2
Safety information ............................ 2
Important labels................................ 3
Warning labels ..................................3
Caution labels ...................................4
Fueling instructions .......................... 4
Gasoline............................................ 4
Engine oil ..........................................5
Battery requirement.......................... 5
Battery specifications ........................ 5
Without a rectifier or Rectifier
Regulator ........................................ 5
Propeller selection............................ 6
Start-in-gear protection ....................6
Basic components ............................7
Main components............................. 7
Fuel tank ...........................................8
Fuel joint ........................................... 9
Fuel gauge ........................................ 9
Fuel tank cap .................................... 9
Air vent screw ................................... 9
Remote control.................................. 9
Remote control lever......................... 9
Neutral interlock trigger................... 10
Neutral throttle lever........................ 10
Choke switch................................... 10
Tiller handle .................................... 10
Gear shift lever................................ 11
Throttle grip..................................... 11
Throttle indicator .............................11
Throttle friction adjuster................... 12
Engine stop lanyard switch .............12
Engine stop button .......................... 13
Choke knob for pull type .................13
Manual starter handle .....................13
Starter button ..................................14
Main switch .....................................14
Power tilt switch ..............................14
Steering friction adjuster .................14
Steering friction adjuster .................15
Trim tab with anode......................... 15
Trim rod (tilt pin) .............................. 16
Tilt lock mechanism......................... 16
Tilt support knob.............................. 16
Tilt support bar ................................16
Power tilt unit................................... 17
Top cowling lock lever(s)
(turn type)...................................... 17
Flushing device ...............................17
Warning indicator ............................17
Warning system ............................. 18
Overheat warning............................ 18
Low oil pressure warning ................18
Operation ......................................... 20
Installation...................................... 20
Mounting the outboard motor .......... 20
Clamping the outboard motor.......... 21
Breaking in engine ......................... 22
Procedure for 4-stroke models........ 22
Preoperation checks ...................... 22
Fuel .................................................22
Controls........................................... 22
Engine ............................................. 23
Checking the engine oil level ..........23
Filling fuel....................................... 23
Operating engine ........................... 23
Feeding fuel (portable tank) ............23
Starting engine ................................ 24
Warming up engine........................ 30
Manual start and electric start
models ..........................................30
Shifting........................................... 30
Forward (tiller handle and remote
control models) .............................30
Reverse (manual tilt and hydro tilt
models) ......................................... 31
Stopping engine............................. 32
Procedure........................................ 32
Trimming outboard motor............... 33
Adjusting trim angle for manual tilt
models ..........................................33
Adjusting trim angle
(power tilt models)......................... 34
Adjusting boat trim ..........................35
Table of contents
Tilting up and down ........................ 35
Procedure for tilting up
(manual tilt models) ...................... 36
Procedure for tilting up.................... 37
Procedure for tilting down
(manual tilt models) ...................... 38
Procedure for tilting down ...............38
Cruising in shallow water ...............39
Cruising in shallow water
(manual tilt models) ...................... 39
Power trim and tilt models / power
tilt models...................................... 40
Cruising in other conditions............ 41
Maintenance..................................... 42
Specifications ................................. 42
Transporting and storing outboard
motor ............................................ 45
Clamp screw mounting models....... 45
Storing outboard motor ...................46
Procedure ....................................... 46
Lubrication
(except oil injection models) ......... 47
Battery care..................................... 47
Flushing power unit......................... 48
Cleaning the outboard motor .......... 49
Checking painted surface of
motor............................................. 49
Periodic maintenance..................... 49
Replacement parts.......................... 49
Maintenance chart .......................... 50
Maintenance chart (additional)........ 51
Greasing ......................................... 52
Cleaning and adjusting spark plug.. 54
Checking fuel system...................... 54
Inspecting fuel filter ......................... 55
Cleaning fuel filter ...........................55
Inspecting idling speed ................... 56
Changing engine oil ........................57
Checking wiring and connectors ..... 58
Exhaust leakage ............................. 58
Water leakage................................. 59
Engine oil leakage........................... 59
Checking power trim and tilt
system .......................................... 59
Checking propeller .......................... 59
Removing the propeller ................... 60
Removing the propeller ................... 60
Installing the propeller ..................... 61
Installing the propeller ..................... 61
Changing gear oil ............................ 62
Cleaning fuel tank ...........................63
Inspecting and replacing anode(s) .. 64
Checking battery
(for electric start models) ..............64
Connecting the battery .................... 65
Disconnecting the battery................ 66
Checking top cowling ......................66
Coating the boat bottom.................. 66
Trouble Recovery............................ 67
Troubleshooting ............................. 67
Temporary action in emergency .... 70
Impact damage ...............................70
Replacing fuse ................................70
Power trim and tilt will not operate ..71
Starter will not operate ....................71
Emergency starting engine .............72
Treatment of submerged motor ..... 73
Procedure........................................ 73
General information
EMU25170
Identification numbers record
EMU25182
Outboard motor serial number
The outboard motor serial number is
stamped on the label attached to the port
side of the clamp bracket or the upper part of
the swivel bracket.
Record your outboard motor serial number in
the spaces provided to assist you in ordering
spare parts from your Yamaha dealer or for
reference in case your outboard motor is stolen.
1. Key number
EMU25202
EC label
Engines affixed with this label conform to
certain portions of the European Parliament
directive relating to machinery. Refer to the
label and the EC Declaration of Conformity
for more details.
1. Outboard motor serial number location
EMU25190
Key number
If a main key switch is equipped with the motor, the key identification number is stamped
on your key as shown in the illustration.
Record this number in the space provided for
reference in case you need a new key.
1
ZMU02342
ZMU01696
EMU25220
Emission control information
EMU25351
SAV models
Engines affixed with the label pictured below
conform to SAV (the Swiss exhaust emission
regulations for Swiss inshore waters).
Approval label of emission control certificate
ZMU02343
YAMAHA MOTOR CO.,LTD.
Motorfamilie
AbgastypenprufNummer
ZMU04492
General information
Fuel requirement label
1
1. Fuel requirement label location
EMU25370
Safety information
Before mounting or operating the outboard
●
motor, read this entire manual. Reading it
should give you an understanding of the
motor and its operation.
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.
●
Do not overpower the boat with this outboard motor. Overpowering the boat could
result in loss of control. The rated power of
the outboard should be equal to or less
than the rated horsepower capacity of the
boat. If the rated horsepower capacity of
the boat is unknown, consult the dealer or
boat manufacturer.
Do not modify the outboard. Modifications
●
could make the motor unfit or unsafe to
ZMU04875
ZMU04494
2
General information
use.
●
Never operate after drinking alcohol or taking drugs. About 50% of all boating fatalities involve intoxication.
●
Have an approved personal flotation device (PFD) on board for every occupant. It
is a good idea to wear a PFD whenever
boating. At a minimum, children and nonswimmers should always wear PFDs, and
everyone should wear PFDs when there
are potentially hazardous boating conditions.
●
Gasoline is highly flammable, and its vapors are flammable and explosive. Handle
and store gasoline carefully. Make sure
there are no gas fumes or leaking fuel before starting the engine.
This product emits exhaust gases which
●
contain carbon monoxide, a colorless,
odorless gas which may cause brain damage or death when inhaled. Symptoms include nausea, dizziness, and drowsiness.
Keep cockpit and cabin areas well ventilated. Avoid blocking exhaust outlets.
●
Check throttle, shift, and steering for proper operation before starting the engine.
Attach the engine stop switch lanyard to a
●
secure place on your clothing, or your arm
or leg while operating. If you accidentally
leave the helm, the lanyard will pull from
the switch, stopping the engine.
●
Know the marine laws and regulations
where you will be boating - and obey them.
●
Stay informed about the weather. Check
weather forecasts before boating. Avoid
boating in hazardous weather.
●
Tell someone where you are going: leave
a Float Plan with a responsible person. Be
sure to cancel the Float Plan when you return.
●
Use common sense and good judgment
when boating. Know your abilities, and be
sure you understand how your boat handles under the different boating conditions
you may encounter. Operate within your
limits, and the limits of your boat. Always
operate at safe speeds, and keep a careful
watch for obstacles and other traffic.
●
Always watch carefully for swimmers during the engine operation.
●
Stay away from swimming areas.
●
When a swimmer is in the water near you
shift into neutral and shut off the engine.
EMU25380
Important labels
EMU25395
Warning labels
ZMU01989
EMU25401
Label
EWM01260
WARNING
●
Be sure shift control is in neutral before
starting engine. (except 2HP)
●
Do not touch or remove electrical parts
when starting or during operation.
●
Keep hands, hair, and clothes away
from flywheel and other rotating parts
while engine is running.
EMU25431
Label
EWM01300
WARNING
●
This engine is equipped with a neutral
3
General information
starting device.
●
The engine will not start unless the shift
control is in neutral position.
EMU25464
Caution labels
ZMU01987
EMU25472
Label
ECM01190
CAUTION:
Transport and store the engine only as
shown. Otherwise, engine damage could
result from Leaking oil.
EMU25540
Fueling instructions
EWM00010
WARNING
GASOLINE AND ITS VAPORS ARE HIGHLY FLAMMABLE AND EXPLOSIVE!
Do not smoke when refueling, and keep
●
away from sparks, flames, or other
sources of ignition.
Stop engine before refueling.
●
Refuel in a well-ventilated area. Refuel
●
portable fuel tanks off the boat.
Take care not to spill gasoline. If gaso-
●
line spills, wipe it up immediately with
dry rags.
Do not overfill the fuel tank.
●
Tighten the filler cap securely after re-
●
fueling.
If you should swallow some gasoline,
●
inhale a lot of gasoline vapor, or get
gasoline in your eyes, get immediate
medical attention.
●
If any gasoline spills onto your skin, immediately wash with soap and water.
Change clothing if gasoline spills on it.
●
Touch the fuel nozzle to the filler opening or funnel to help prevent electrostatic sparks.
ECM00010
CAUTION:
Use only new clean gasoline which has
been stored in clean containers and is not
contaminated with water or foreign matter.
EMU25580
Gasoline
Recommended gasoline:
Regular unleaded gasoline with a minimum octane rating of 90 (Research
Octane Number).
If knocking or pinging occurs, use a different
brand of gasoline or premium unleaded fuel.
4
General information
EMU25680
Engine oil
Recommended engine oil:
4-stroke motor oil with a combination
of corresponding SAE and API as
shown in the chart
Engine oil quantity (excluding oil filter):
1.0 L (1.06 US qt) (0.88 Imp.qt)
ECM01050
CAUTION:
All 4-stroke engines are shipped from the
factory without engine oil.
electric system could perform poorly or
be overloaded, causing electric system
damage.
For electric start models, choose a battery
which meets the following specifications.
EMU25720
Battery specifications
Minimum cold cranking amps (CCA/EN):
F15AE 347.0 A
F15AEH 347.0 A
F15AEP 347.0 A
F9.9CE 347.0 A
FT9.9DE 347.0 A
Minimum rated capacity (20HR/IEC):
F15AE 40.0 Ah
F15AEH 40.0 Ah
F15AEP 40.0 Ah
F9.9CE 40.0 Ah
FT9.9DE 40.0 Ah
EMU25730
Without a rectifier or Rectifier
Regulator
ECM01090
CAUTION:
A battery cannot be connected to models
that do not have a rectifier or Rectifier
Regulator.
ZMU01710
EMU25690
Battery requirement
ECM01060
CAUTION:
Do not use a battery that does not meet
the specified capacity. If a battery which
does not meet specifications is used, the
5
If you wish to use a battery with the models
without a rectifier or Rectifier Regulator, install an optional Rectifier Regulator.
Using a maintenance-free battery with the
above models can shorten the life of the battery significantly.
Install an optional Rectifier Regulator or use
accessories rated to withstand 18 volts or
higher with the above models. Consult your
Yamaha dealer for details on installing an
optional Rectifier Regulator.
General information
EMU25741
Propeller selection
The performance of your outboard motor will
be critically affected by your choice of propeller, as an incorrect choice could adversely
affect performance and could also seriously
damage the motor. Engine speed depends
on the propeller size and boat load. If engine
speed is too high or too low for good engine
performance, this will have an adverse effect
on the engine.
Yamaha outboard motors are fitted with propellers chosen to perform well over a range
of applications, but there may be uses where
a propeller with a different pitch would be
more appropriate. For a greater operating
load, a smaller-pitch propeller is more suitable as it enables the correct engine speed
to be maintained. Conversely, a larger-pitch
propeller is more suitable for a smaller operating load.
Yamaha dealers stock a range of propellers,
and can advise you and install a propeller on
your outboard that is best suited to your application.
to reach the middle or upper half of the operating 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, reduce the throttle setting to maintain
the engine in the proper operating range.
For instructions on propeller removal and installation, see page 59.
EMU25760
Start-in-gear protection
Yamaha outboard motors affixed with the
pictured label or Yamaha-approved remote
control units are equipped with start-in-gear
protection device(s). This feature permits the
engine to be started only when it is in neutral.
Always select neutral before starting the engine.
1
x
-
123
ZMU04605
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
ZMU01713
1. Start-in-gear protection label
6
Basic components
EMU25795
Main components
NOTE:
* May not be exactly as shown; also may not be included as standard equipment on all models.
F9.9C, F13.5A, F15A
10
11
12
14
13
1
19
18
9
2
17
16
8
7
3
23
22
15
20
21
6
5
1. Top cowling
2. Top cowling lock lever(s)
3. Drain screw
4. Anti-cavitation plate
5. Propeller
6. Cooling water inlet
7. Trim rod*
8. Clamp bracket
9. Steering friction screw
10. Manual starter handle*
11. Choke knob
12. Warning indicator(s)
13. Gear shift lever*
14. Tiller handle*
7
4
15. Engine stop button/Engine stop lanyard
switch*
16. Transom clamp handle
17. Rope attachment
18. Tilt lock lever*
19. Flushing device*
20. Starter button*
21. Throttle friction adjuster*
22. Tilt support knob*
23. Remote control box (side mount type)*
24. Fuel tank
24
ZMU04892
FT9.9D
Basic components
10
9
8
7
6
1. Top cowling
2. Top cowling lock lever(s)
3. Drain screw
4. Anti-cavitation plate
5. Propeller
6. Cooling water inlet
7. Trim rod*
8. Steering friction screw
9. Clamp bracket
10. Tiller handle*
11. Choke knob
12. Manual starter handle*
13. Warning indicator
14. Throttle friction adjuster*
15. Engine stop button/Engine stop lanyard
switch*
16. Transom clamp handle
17. Rope attachment
11
1
12
13
18
2
17
3
19
4
15 14
16
20
5
18. Tilt lock lever*
19. Remote control box (side mount type)*
20. Fuel tank
EMU25802
Fuel tank
If your model was equipped with a portable
fuel tank, its function is as follows.
EWM00020
WARNING
The fuel tank supplied with this engine is
its dedicated fuel reservoir and must not
be used as a fuel storage container. Commercial users should conform to relevant
licensing or approval authority regulations.
ZMU04891
8
Basic components
1. Air vent screw
2. Fuel gauge
3. Fuel joint
4. Fuel tank cap
4
3
1
2
ZMU01992
the tank can be filled with fuel. To remove the
cap, turn it counterclockwise.
EMU25860
Air vent screw
This screw is on the fuel tank cap. To loosen
the screw, turn it counterclockwise.
EMU26180
Remote control
The remote control lever actuates both the
shifter and the throttle. The electrical switches are mounted on the remote control box.
13
1. Air vent screw
2. Fuel gauge
3. Fuel joint
4. Fuel tank cap
EMU25830
42
ZMU03157
Fuel joint
This joint is used to connect the fuel line.
EMU25841
Fuel gauge
This gauge is located on either the fuel tank
cap or on the fuel joint base. It shows the approximate amount of fuel remaining in the
tank.
EMU25850
Fuel tank cap
This cap seals the fuel tank. When removed,
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
EMU26190
Remote control lever
Moving the lever forward from the neutral position engages forward gear. Pulling the lever back from neutral engages reverse. The
engine will continue to run at idle until the lever is moved about 35° (a detent can be felt).
Moving the lever farther opens the throttle,
and the engine will begin to accelerate.
9
1. Neutral “”
2. Forward “”
3. Reverse “”
4. Shift
5. Fully closed
6. Throttle
7. Fully open
EMU26201
Neutral interlock trigger
To shift out of neutral, first pull the neutral interlock trigger up.
Basic components
when the remote control lever is in neutral.
The remote control lever will operate only
when the neutral throttle lever is in the closed
position.
1. Fully open
2. Fully closed
EMU26221
Choke switch
To activate the choke system, press in the
main switch while the key is turned to the
“” (on) or “” (start) position. The
choke system will then supply the rich fuel
mixture required to start the engine. When
the key is released, the choke will switch off
automatically.
1. Neutral interlock trigger
EMU26211
Neutral throttle lever
To open the throttle without shifting into either forward or reverse, put the remote control lever in the neutral position and lift the
neutral throttle lever.
NOTE:
The neutral throttle lever will operate only
ZMU03160
EMU25911
Tiller handle
To change direction, move the tiller handle to
the left or right as necessary.
10
Basic components
ZMU01997
ZMU04879
EMU25922
Gear shift lever
Pulling the gear shift lever towards you puts
the engine in forward gear so that the boat
moves ahead. Pushing the lever away from
you puts the engine in reverse gear so that
the boat moves astern.
R
3
N
2
F
1
ZMU04878
1. Forward “”
2. Neutral “”
3. Reverse “”
EMU25941
Throttle grip
The throttle grip is on the tiller handle. Turn
the grip counterclockwise to increase speed
and clockwise to decrease speed.
1. Forward “”
2. Neutral “”
3. Reverse “”
11
R
N
3
2
2
F
1
EMU25961
Throttle indicator
The fuel consumption curve on the throttle
ZMU01999
indicator shows the relative amount of fuel
consumed for each throttle position. Choose
the setting that offers the best performance
ZMU01998
and fuel economy for the desired operation.
Basic components
1
ZMU02000
1. Throttle indicator
EMU25970
Throttle friction adjuster
A friction device provides adjustable resistance to movement of the throttle grip or the
remote control lever, and can be set according to operator preference.
To increase resistance, turn the adjuster
clockwise. To decrease resistance, turn the
adjuster counterclockwise.
EWM00030
WARNING
Do not overtighten the friction adjuster. If
there is too much resistance, it could be
difficult to move throttle lever or grip,
which could result in an accident.
ZMU02001
When constant speed is desired, tighten the
adjuster to maintain the desired throttle setting.
EMU25990
Engine stop lanyard switch
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 ignition to the engine. This
will prevent the boat from running away under power.
EWM00120
WARNING
Attach the engine stop switch lanyard
●
to a secure place on your clothing, or
your arm or leg while operating.
Do not attach the lanyard to clothing
●
that could tear loose. Do not route the
lanyard where it could become entangled, preventing it from functioning.
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.
12
Basic components
NOTE:
The engine cannot be started with the lock
plate removed.
2
1
ZMU02003
1. Lanyard
2. Lock plate
1. Lanyard
2. Lock plate
EMU26001
Engine stop button
To open the ignition circuit and stop the engine, push this button.
ZMU02083
EMU26011
Choke knob for pull type
To supply the engine with the rich fuel mixture required to start, pull out this knob.
ZMU02355
EMU26070
Manual starter handle
To start the engine, first gently pull the handle out until resistance is felt. From that position, then pull the handle straight out quickly
to crank the engine.
13
ZMU02005
Basic components
EMU26080
Starter button
To start the engine with the electric starter,
push the starter button.
ZMU04880
EMU26090
Main switch
The main switch controls the ignition system;
its operation is described below.
●
“”
(off)
With the main switch in the “” (off) posi-
tion, the electrical circuits are off, and the key
can be removed.
●
“”
(on)
With the main switch in the “” (on) posi-
tion, the electrical circuits are on, and the key
cannot be removed.
●
“”
With the main switch in the “” (start) po-
sition, the starter motor turns to start the engine. When the key is released, it returns
automatically to the “” (on) position.
(start)
EMU26102
Power tilt switch
The power tilt system adjusts the outboard
motor angle in relation to the transom. Pushing the switch “” (up) tilts the outboard mo-
tor up. Pressing the switch “” (down) tilts
the outboard motor down. When the switch is
released, the outboard motor will stop in its
current position.
UP
DN
ZMU02811
NOTE:
For instructions on using the power tilt
switch, see pages 33 and 35.
EMU26110
Steering friction adjuster
A friction device provides adjustable resistance to the steering mechanism, and can be
set according to operator preference. An adjuster lever is located on the bottom of the
tiller handle bracket.
To increase resistance, turn the lever to the
left.
14
Basic components
To decrease resistance, turn the lever to the
right.
EWM00040
WARNING
Do not overtighten the friction adjuster. If
there is too much resistance, it could be
difficult to steer, which could result in an
accident.
ZMU02340
EMU26122
Steering friction adjuster
A friction device provides adjustable resistance to the steering mechanism, and can be
set according to operator preference. An adjusting screw or bolt is located on the swivel
bracket.
counterclockwise.
EWM00040
WARNING
Do not overtighten the friction adjuster. If
there is too much resistance, it could be
difficult to steer, which could result in an
accident.
EMU26240
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.
EWM00840
WARNING
An improperly adjusted trim tab could
cause difficult steering. Always test run
after the trim tab has been installed or replaced to be sure steering is correct. Be
sure you have tightened the bolt after adjusting the trim tab.
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.
ZMU02080
To increase resistance, turn the adjuster
clockwise.
To decrease resistance, turn the adjuster
15
Basic components
A
1
2
B
ZMU03097
1
ZMU02008
1. Trim tab
2. Bolt
EMU26261
Trim rod (tilt pin)
The position of the trim rod determines the
minimum trim angle of the outboard motor in
relation to the transom.
ZMU02007
EMU26312
Tilt lock mechanism
The tilt lock mechanism is used to prevent
the outboard motor from lifting out of the water when in reverse gear.
1. Tilt lock lever
To lock it, set the tilt lock lever in the “”
(lock) position. To release, push the tilt lock
lever in the “” (release) position.
EMU26320
Tilt support knob
To keep the outboard motor in the tilted up
position, push the tilt support knob under the
swivel bracket.
ZMU04884
EMU26330
Tilt support bar
The tilt support bar keeps the outboard motor
in the tilted up position.
16
Basic components
1
ZMU02078
EMU26360
Power tilt unit
This unit tilts the outboard motor up and
down and is controlled with the power tilt
switch.
ECM00630
CAUTION:
Do not step on or exert pressure on the
power tilt motor. The power tilt unit could
be damaged as a result.
1. Power tilt unit
2. Power tilt motor
EMU26372
Top cowling lock lever(s) (turn type)
To remove the engine top cowling, turn the
lock lever(s) and lift off the cowling. When installing the cowling, check to be sure it fits
properly in the rubber seal. Then lock the
cowling again by returning the lever(s) to the
lock position.
ZMU02009
1. Top cowling lock lever(s)
EMU26460
Flushing device
This device is used to clean the cooling water passages of the motor using a garden
hose and tap water.
NOTE:
For details on usage, see page 48.
1
ZMU04885
1. Flushing device
EMU26300
Warning indicator
If the engine develops a condition which is
cause for warning, the indicator lights up. For
details on how to read the warning indicator,
see page 18.
17
ZMU02010
Basic components
EMU26801
Warning system
ECM00090
CAUTION:
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.
EMU26813
Overheat warning
This engine has an overheat warning device.
If the engine temperature rises too high, the
warning device will activate.
Activation of warning device
The engine speed will automatically de-
●
crease to about 2000 r/min.
●
The overheat warning indicator will light (if
equipped on the bottom cowling or the ta-
chometer).
●
The buzzer will sound (if equipped on the
tiller handle, remote control box, or main
switch panel).
If the warning system has activated, stop the
engine and check the cooling water inlet for
clogging.
ZMU03026
EMU30164
Low oil pressure warning
If the oil pressure drops too low, the warning
device will activate.
Activation of warning device
The engine speed will automatically de-
●
crease to about 2000 r/min.
The low oil pressure warning indicator will
●
light.
18
Basic components
ZMU02081
The buzzer will sound (if equipped on the
●
tiller handle, remote control box, or main
switch panel).
ZMU02360
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.
19
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