Yamaha F30A, F40B User Manual

OWNER’S MANUAL

F30A
F40B

67C-28199-77-E0

EMU25050

Read this owner’s manual carefully before operating your outboard motor.

Important manual information

EMU25101

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.
To ensure long product life, Yamaha recom­mends that you use the product and perform
the specified periodic inspections and main­tenance by correctly following the instruc­tions in the owner’s manual. Note that if you
do not follow these instructions, not only may
the product break down, but the warranty will
also be voided.
Some countries have laws or regulations re­stricting users from taking the product out of
the country where it was purchased, and it
may be impossible to register the product in
the destination country. Additionally, the
warranty may not apply in certain regions.
When planning to take the product to another
country, consult the dealer where the prod­uct was purchased for further information.
If the product was purchased used, please
consult your closest dealer for customer re­registration, and to be eligible for the speci­fied services.

NOTE:

The F30AMHD, F30AWHD, F30AET,
F40BMHD, F40BED, F40BET 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.

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-

Important manual information

EMU25120

F30A, F40B

OWNER’S MANUAL

©2005 by Yamaha Motor Co., Ltd.

1st Edition, March 2005

All rights reserved.

Any reprinting or unauthorized use

without the written permission of

Yamaha Motor Co., Ltd.
is expressly prohibited.

Printed in Japan

Table of contents

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............................... 4

Warning labels ..................................4

Caution labels ...................................4

Fueling instructions ......................... 4

Gasoline............................................ 5

Engine oil ..........................................5

Battery requirement......................... 6

Battery specifications ........................ 6

Without a rectifier or Rectifier

Regulator ........................................ 6

Propeller selection........................... 6

Start-in-gear protection ................... 7

Basic components ............................8

Main components............................ 8

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

Tiller handle .................................... 10

Gear shift lever................................ 10

Throttle grip..................................... 11

Throttle indicator .............................11

Throttle friction adjuster................... 11

Engine stop lanyard switch .............12

Engine stop button .......................... 12

Manual starter handle .....................13

Main switch .....................................13

Steering friction adjuster .................13

Power trim and tilt switch on remote

control or tiller handle ................... 14

Power trim and tilt switch on bottom

engine cowling .............................. 14

Trim tab with anode......................... 15

Tilt lock mechanism......................... 15

Tilt support knob.............................. 15

Top cowling lock lever(s) (turn

type) .............................................. 16

Flushing device ...............................16

Warning indicator ............................16

Digital tachometer ...........................17

Low oil pressure warning

indicator ........................................17

Overheat warning indicator (digital

type) .............................................. 17

Trim meter (digital type) ..................18

Hour meter (digital type).................. 18

Warning system ............................ 18

Overheat warning............................ 18

Low oil pressure warning ................19

Operation ......................................... 21

Installation..................................... 21

Mounting the outboard motor .......... 21

Breaking in engine ........................ 22

Procedure for 4-stroke models........ 22

Preoperation checks ..................... 22

Fuel .................................................22

Controls........................................... 23

Engine ............................................. 23

Checking the engine oil level ..........23

Filling fuel...................................... 23

Operating engine .......................... 24

Feeding fuel (portable tank) ............24

Starting engine ................................ 25

Warming up engine....................... 29

Manual start and electric start

models ..........................................29

Shifting.......................................... 29

Forward (tiller handle and remote

control models) .............................29

Reverse (automatic reverse lock

and power trim and tilt models).....30

Reverse (manual tilt and hydro tilt

models) ......................................... 31

Stopping engine............................ 32

Procedure........................................ 32

Trimming outboard motor.............. 33

Adjusting trim angle......................... 33

Table of contents

Adjusting trim angle for hydro tilt

models .......................................... 34

Adjusting boat trim ..........................35

Tilting up and down ....................... 36

Procedure for tilting up (hydro tilt

models) ......................................... 36

Procedure for tilting up.................... 37

Procedure for tilting down (manual

and hydro tilt models) ................... 38

Procedure for tilting down ...............39

Cruising in shallow water .............. 40

Hydro tilt models .............................40

Power trim and tilt models / power

tilt models...................................... 41

Cruising in other conditions........... 42

Maintenance..................................... 43

Specifications ................................ 43

Transporting and storing outboard

motor ........................................... 45

Storing outboard motor ...................45

Procedure ....................................... 46

Lubrication (except oil injection

models) ......................................... 47

Battery care..................................... 47

Flushing power unit......................... 48

Cleaning the outboard motor .......... 48

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 ............................................... 52

Checking fuel system...................... 53

Checking fuel filter .......................... 54

Inspecting idling speed ................... 54

Changing engine oil ........................54

Checking wiring and connectors ..... 56

Exhaust leakage ............................. 56

Water leakage................................. 56

Engine oil leakage........................... 56

Checking power trim and tilt /

power tilt system ........................... 56

Checking propeller ..........................57

Removing the propeller ................... 58

Installing the Propeller..................... 58

Changing gear oil ............................ 59

Cleaning fuel tank ...........................60

Inspecting and replacing

anode(s)........................................60

Checking battery (for electric start

models) ......................................... 61

Connecting the battery .................... 62

Disconnecting the battery................ 62

Checking top cowling ......................62

Coating the boat bottom.................. 62

Trouble Recovery............................ 64

Troubleshooting ............................ 64

Temporary action in emergency ... 67

Impact damage ...............................67

Replacing fuse ................................67

Power trim and tilt / power tilt will

not operate....................................68

Starter will not operate ....................68

Emergency starting engine .............69

Treatment of submerged motor .... 70

Procedure........................................ 70

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

ZMU04028

1. Outboard motor serial number location

reference in case you need a new key.

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.

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

1

ZMU04029

1. EC label location

1

General information

Fuel requirement label

ZMU01696

EMU25221

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

1

ZMU04030

1. Approval label location

YAMAHA MOTOR CO.,LTD.

Motorfamilie

Abgastypenpruf­Nummer

ZMU04492

1

ZMU04031

1. Fuel requirement label location

EMU25371

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

2

General information

boat manufacturer.

●

Do not modify the outboard. Modifications
could make the motor unfit or unsafe to
use.

●

Incorrect propeller selection and incorrect
use may not only cause engine damage,
but also adversely affect fuel consumption.
Consult your dealer for correct use.
Never operate after drinking alcohol or tak-

●

ing drugs. About 50% of all boating fatali­ties involve intoxication.
Have an approved personal flotation de-

●

vice (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 dur-

●

ing 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.

●

Do not illegally discard empty containers
used to replace or replenish oil. For the
correct processing of empty containers,
consult the dealer where you purchased
the oil.

●

When replacing oils used to lubricate the
product (engine or gear oil), be sure to
wipe away any spilt oil. Never pour oil with­out using a funnel or similar device. If nec­essary, verify the necessary replacement
procedure with the dealer.

●

Never illegally discard (dump) the product.
Yamaha recommends consulting the deal­er on discarding the product.

3

General information

EMU25382

Important labels

EMU25395

Warning labels

ZMU04033

ZMU05275

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

●

starting device.

●

The engine will not start unless the shift

control is in neutral position.

EMU25465

Caution labels

ZMU04101

ZMU05276

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

4

General information

portable fuel tanks off the boat.

●

Take care not to spill gasoline. If gaso­line 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, im-

●

mediately wash with soap and water.
Change clothing if gasoline spills on it.
Touch the fuel nozzle to the filler open-

●

ing 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

EMU25683

Engine oil

Recommended engine oil:

4-stroke motor oil with a combination
of the following 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):

2.0 L (2.11 US qt) (1.76 Imp.qt)

NOTE:

If the recommended engine oil grades are
not available, select an alternative from the
following chart according to the average
temperatures in your area.

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.

ECM01050

CAUTION:

All 4-stroke engines are shipped from the
factory without engine oil.

5

General information

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
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):

F30AET 430.0 A
F30AWHD 430.0 A
F40BED 430.0 A
F40BET 430.0 A

Minimum rated capacity (20HR/IEC):

F30AET 70.0 Ah
F30AWHD 70.0 Ah
F40BED 70.0 Ah
F40BET 70.0 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.

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.

EMU25742

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.

6

x

-

123

ZMU04604

General information

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. Propeller diameter in inches

2. Propeller pitch in inches

3. Type of propeller (propeller mark)

x

-

123

ZMU04606

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 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.

1

ZMU01713

1. Start-in-gear protection label

For instructions on propeller removal and in­stallation, see page 57.

7

Basic components

EMU25796

Main components

NOTE:

* May not be exactly as shown; also may not be included as standard equipment on all mod­els.

F30A, F40B

12

10

1

11

9

8

7

1. Top cowling

2. Top cowling lock lever

3. Drain screw

4. Anti-cavitation plate

5. Trim tab (anode)

6. Propeller

7. Cooling water inlet

8. Clamp bracket

9. Power trim and tilt switch

10. Manual starter handle

11. Warning indicator(s)

12. Tiller handle

13. Tilt support knob

14. Flushing device

2

14

13

13

3

15

4

17

16

5

6

ZMU04034

15. Fuel tank*

16. Remote control box (side mount type)*

17. Digital tachometer*

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

8

licensing or approval authority regula­tions.

Basic components

13

1. Fuel joint

2. Fuel gauge

3. Fuel tank cap

4. Air vent screw

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,
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.

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.

1. Neutral “”

2. Forward “”

3. Reverse “”

4. Shift

5. Fully closed

9

Basic components

6. Throttle

7. Fully open

EMU26201

Neutral interlock trigger

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

1. Neutral interlock trigger

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
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

EMU25911

Tiller handle

To change direction, move the tiller handle to
the left or right as necessary.

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.

10

Basic components

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.

EMU25961

Throttle indicator

The fuel consumption curve on the throttle
indicator shows the relative amount of fuel
consumed for each throttle position. Choose
the setting that offers the best performance
and fuel economy for the desired operation.

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.

11

Basic components

ZMU03169

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.

NOTE:

The engine cannot be started with the lock
plate removed.

1. Lanyard

2. Lock plate

1

2

ZMU03171

1. Lock plate

2. Lanyard

EMU26001

Engine stop button

To open the ignition circuit and stop the en­gine, push this button.

12

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.

ZMU04037

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 en-

(start)

Basic components

gine. When the key is released, it returns
automatically to the “” (on) position.

ON

STARTOFF

ZMU03590

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.

ZMU04120

To increase resistance, turn the adjuster
clockwise.

13

Basic components

To decrease resistance, turn the adjuster
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.

EMU26141

Power trim and tilt switch on remote
control or tiller handle

The power trim and tilt system adjusts the
outboard motor angle in relation to the tran­som. Pressing the switch “” (up) trims the
outboard motor up, then tilts it up. Pressing
the switch “” (down) tilts the outboard mo-
tor down and trims it down. When the switch
is released, the outboard motor will stop in its
current position.

NOTE:

For instructions on using the power trim and
tilt switch, see pages 33 and 36.

EMU26151

Power 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 up, then tilts it up. Pressing the switch
“” (down) tilts the outboard motor down
and trims it down. When the switch is re­leased, the outboard motor will stop in its
current position.

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 en­gine off. Attempting to use this switch
while the boat is moving could increase
the risk of falling overboard and could
distract the operator, increasing the risk
of collision with another boat or an obsta­cle.

14

Basic components

UP

DN

ZMU04038

NOTE:

For instructions on using the power trim and
tilt switch, see page 36.

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.

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.

1

A

B

2

ZMU02822

1. Trim tab

2. Bolt

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

ZMU04039

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. 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.

15

Basic components

1

ZMU04040

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.

1

ZMU04041

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.

ZMU04042

1. Flushing device

EMU26301

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.

1

ZMU04043

1. Warning indicator

16

Basic components

EMU26491

Digital tachometer

The tachometer shows the engine speed
and has the following functions.

NOTE:

All segments of the display will light momen­tarily after the main switch is turned on and
will return to normal thereafter.

1

2

3

5

6

1. Tachometer

2. Trim meter

3. Hour meter

4. Low oil pressure warning indicator

5. Overheat warning indicator

6. Set button

7. Mode button

NOTE:

The water separator and engine trouble
warning indicators only operate when the en­gine is equipped with the appropriate func­tions.

EMU26521

Low oil pressure warning indicator

If oil pressure drops too low, the warning in­dicator will start to blink. For further informa­tion, see page 19.

ECM00020

CAUTION:

●

Do not continue to run the engine if the
low oil pressure warning indicator is on
and the engine oil level is lower. Seri-

7

ZMU01840

4

ous engine damage will occur.

●

The low oil pressure warning indicator
does not indicate the engine oil level.
Use the oil dipstick to check the re­maining oil quantity. For further infor­mation, see page 23.

1

ZMU01736

1. Low oil pressure warning indicator

EMU26581

Overheat warning indicator (digital
type)

If the engine temperature rises too high, the
warning indicator will start to blink. For fur­ther information on reading the indicator, see
page 18.

ECM00050

CAUTION:

Do not continue to run the engine if the
overheat warning indicator is on. Serious
engine damage will occur.

17

Basic components

1

ZMU01737

1. Overheat warning indicator

EMU26620

Trim meter (digital type)

This meter shows the trim angle of your out­board motor.

NOTE:

●

Memorize the trim angles that work best
for your boat under different conditions.
Adjust the trim angle to the desired using
the power trim and tilt switch.
If the trim angle of your motor exceeds the

●

trim operating range, the top segment on
the trim meter display will blink.

ZMU01740

EMU26650

Hour meter (digital type)

This meter shows the number of hours the
engine has been run. It can be set to show
the total number of hours or the number of
hours for the current trip. The display can
also be turned on and off.

ZMU01741

●

Changing the display format

●

Pressing the “” (mode) button chang-
es the display format in the following pat­tern:

●

Total hours→Trip hours→Display off

●

Resetting the trip hours

●

Simultaneously pressing the “” (set)
and “” (mode) buttons for more than
1 second while the trip hours are displayed
resets the trip counter to 0 (zero).

NOTE:

The total number of hours the engine has
been run cannot be reset.

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.

EMU26815

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 de­crease to about 2000 r/min.

●

If equipped with an overheat warning indi-

18