Yamaha outboard motor User Manual

OWNER’S MANUAL

C40A
C50A

U.S.A.Edition

LIT-18626-04-75

EMU01449

TO THE OWNER

Thank you for choosing a Yamaha out­board motor. This Owner’s manual con­tains information needed for proper oper­ation, maintenance and care. A thorough
understanding of these simple instruc­tions will help you obtain maximum
enjoyment from your new Yamaha. If you
have any question about the operation or
maintenance of your outboard motor,
please consult a Yamaha dealer.

In this Owner’s Manual particularly
important information is distinguished in
the following ways.

The Safety Alert Symbol means
ATTENTION! BECOME ALERT!

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YOUR SAFETY IS INVOLVED!

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A CAUTION indicates special precautions
that must be taken to avoid damage to
the outboard motor.

NOTE:

A NOTE provides key information to make
procedures easier or clearer.

* Yamaha continually seeks advance-

ments in product design and quality.
Therefore, while this manual contains
the most current product information
available at the time of printing, there
may be minor discrepancies between
your machine and this manual. If there
is any question concerning this manual,
please consult your Yamaha dealer.

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Failure to follow WARNING instructions
could result in severe injury or death to
the machine operator, a bystander, or a
person inspecting or repairing the out­board motor.

EMU01446

C40A/C50A

OWNER'S MANUAL

©2001 by Yamaha Motor Corporation, USA

1st Edition, March 2001

All rights reserved.

Any reprinting or unauthorized use

without the written permission of

Yamaha Motor Corporation, USA

is expressly prohibited.

Printed in Japan

P/N LIT-18626-04-75

NOTE:

The C40TR, C50TR and their standard
accessories are used as a base for the
explanations and illustrations in this man­ual. Therefore, some items may not apply
to every model.

CONTENTS

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GENERAL INFORMATION

BASIC COMPONENTS

OPERATION

MAINTENANCE

1

2

3

4

TROUBLE RECOVERY

INDEX

READ THIS OWNER’S MANUAL CAREFULLY

BEFORE OPERATING YOUR OUTBOARD MOTOR.

5

6

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EMB00010

Chapter 1

GENERAL

INFORMATION

IDENTIFICATION NUMBERS RECORD ..1-1

Outboard motor serial number...........1-1

Key number...........................................1-1

EMISSION CONTROL INFORMATION...1-2

SAFETY INFORMATION..........................1-3

1

2

IMPORTANT LABELS ..............................1-5

BASIC BOATING RULES .........................1-6

FUELING INSTRUCTIONS.....................1-10

Gasoline (Petrol).................................1-10

Engine oil ............................................1-11

BATTERY REQUIREMENT ....................1-12

PROPELLER SELECTION .......................1-12

START-IN-GEAR PROTECTION ............1-14

3

4

5

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1

401012

904011*

123

YAMAHA

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EMU00005

IDENTIFICATION NUMBERS

RECORD

EMU00007

OUTBOARD MOTOR SERIAL
NUMBER

YAMAHA MOTOR CO., LTD.
MADE IN JAPAN
PAYS D’ORIGINE JAPON

The outboard motor serial number is
stamped on the label attached to the port
side of the clamp-bracket.
Record your outboard motor serial num­ber in the spaces provided to assist you in
ordering spare parts from your Yamaha
dealer or for reference in case your out­board motor is stolen.

1 Outboard motor serial number

EMU00008

KEY NUMBER

If a main key switch is equipped with the
motor, the key identification number is
stamped on your key as shown in the
illustration. Record this number in the
space provided for reference in case you
need a new key.

1 Key number

1-1

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EMISSION CONTROL INFORMATION

ENGINE FAMILY :

THIS ENGINE CONFORMS TO 2001 U.S. EPA REGULATIONS FOR MARINE SI ENGINES.
FELs :
SPARK PLUG :

IDLE SPEED :

rpm IN NEUTRAL

SPARK PLUG GAP (mm) :

g/kw-hr

Manufactured:

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******

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EMU01385

EMISSION CONTROL

INFORMATION

EMU01386

NORTH AMERICAN MODELS

This engine conforms to U.S. Environ­mental Protection Agency (EPA) regula­tions for marine SI engines. See the label
affixed to your engine for details.

Approval label of Emission control
certificate

This label is attached to the bottom cowl­ing.

1 Emission control information label

Existing Technology ; N/A

Manufactured date label

This label is attached to the clamp bracket
or the swivel bracket.

2 Manufactured date label

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EMU00917

SAFETY

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8 Before mounting or operating the out-

board motor, read this entire manual.
Reading it should give you an under­standing of the motor and its operation.

8 Before operating the boat, read any

owner’s or operator’s manuals supplied
with it and all labels. Be sure you under­stand each item before operating.

8 Do not overpower the boat with this

outboard motor. Overpowering the
boat could result in loss of control. The
rated power of the outboard should be
equal to or less than the rated horse­power capacity of the boat. If the rated
horsepower capacity of the boat is
unknown, consult the dealer or boat
manufacturer.

8 Do not modify the outboard. Modifica-

tions could make the motor unfit or
unsafe to use.

8 Never operate after drinking alcohol or

taking drugs. About 50% of all boating
fatalities involve intoxication.

8 Have an approved personal flotation

device (PFD) on board for every occu­pant. It is a good idea to wear a PFD
whenever boating. At a minimum, chil­dren and non-swimmers should always
wear PFDs, and everyone should wear
PFDs when there are potentially haz­ardous boating conditions.

8 Gasoline is highly flammable, and its

vapors are flammable and explosive.
Handle and store gasoline carefully.
Make sure there are no gas fumes or
leaking fuel before starting the engine.

INFORMATION

8 This product emits exhaust gases which

contain carbon monoxide, a colorless,
odorless gas which may cause brain
damage or death when inhaled. Symp­toms include nausea, dizziness, and
drowsiness. Keep cockpit and cabin
areas well ventilated. Avoid blocking
exhaust outlets.

8 Check throttle, shift, and steering for

proper operation before starting the
engine.

8 Attach the engine stop switch lanyard

to a secure place on your clothing, or
your arm or leg while operating. If you
accidentally leave the helm, the lanyard
will pull from the switch, stopping the
engine.

8 Know the marine laws and regulations

where you will be boating - and obey
them. Refer to the “RULES OF THE
ROAD” section for basic boating rules.

8 Stay informed about the weather.

Check weather forecasts before boating.
Avoid boating in hazardous weather.

8 Tell someone where you are going:

leave a Float Plan with a responsible
person. Be sure to cancel the Float Plan
when you return.

8 Use common sense and good judgment

when boating. Know your abilities, and
be sure you understand how your boat
handles under the different boating
conditions you may encounter. Operate
within your limits, and the limits of your
boat. Always operate at safe speeds,
and keep a careful watch for obstacles
and other traffic.

8 Always watch carefully for swimmers

during the engine operation.

8 Stay away from swimming areas.

1-3

8 When a swimmer is in the water near

you shift into neutral and shut off the
engine.

8 Be informed about boating safety.

Additional publications and informa­tion can be obtained from many orga­nizations, including the following:

United States Coast Guard

Consumer Affairs Staff (G-BC)
Office of Boating, Public, and Consumer
Affairs
U.S. Coast Guard Headquarters
Washington, D.C. 20593-0001
Boating Safety Hotline: [phone]

National Marine Manufacturers

Association (NMMA)

401 N. Michigan Ave.
Chicago, Il 60611

Marine Retailers Association of America

155 N. Michigan Ave.
Chicago, Il 60601

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WARNING

●Be sure shift control is in neutral

before starting engine. (except 2HP)

●Do not touch or remove electrical parts

when starting or during operation.

●Keep hands,hair,and clothes away from flywheel

and other rotating parts while engine is running.

6A1-83625- 41

CAUTION

Use premix fuel only.

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EMB30010

IMPORTANT LABELS

WARNING LABELS

1

202016*

CAUTION LABELS

2

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EMB40010

BASIC BOATING RULES

(Rules of the road)

Just as there are rules which apply when
you are driving on streets and high ways,
there are waterway rules which apply
when you are driving your boat. These
rules are used internationally, and are
also enforced by the United States Coast
Guard and local agencies. You should be
aware of these rules, and follow them
whenever you encounter another vessel
on the water.

Several sets of rules prevail according to
geographic location, but are all basically
the same as the International Rules of the
Road. The rules presented here in your
Owner’s Manual are condensed, and have
been provided for your convenience only.
Consult your local U.S. Coast Guard Aux­iliary or Department of Motor Vehicles for
a complete set of rules governing the
waters in which you will be using your
boat.

STEERING AND SAILING RULES AND
SOUND SIGNALS

Whenever two vessels on the water meet
one another, one vessel has the right-of­way; it is called the “stand-on” vessel.
The vessel which does not have the right­of-way is called the “give-way” or “bur­dened” vessel. These rules determine
which vessel has the right-of-way, and
what each vessel should do.

Stand-on vessel

The vessel with the right-of-way has the
duty to continue its course and speed,
except to avoid an immediate collision.
When you maintain your direction and
speed, the other vessel will be able to
determine how best to avoid you.

Give-way vessel

The vessel which does not have the right­of-way has the duty to take positive and
timely action to stay out of the way of the
Stand-On vessel. Normally, you should
not cross in front of the vessel with the
right-of-way. You should slow down or
change directions briefly and pass behind
the other vessel. You should always move
in such a way that the operator of the
other vessel can see what you are doing.

“The general prudential rule”

This rule is called Rule 2 in the Interna­tional Rules and says,

‘In obeying and construing these rules
due regard shall be had to all dangers of
navigation and collision, and to any spe­cial circumstances, which may render a
departure from the above rules necessary
in order to avoid immediate danger.’

In other words, follow the standard rules
except when a collision will occur unless
both vessels try to avoid each other. If
that is the case, both vessels become
“Give-Way” vessels.

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102045

RULES WHEN ENCOUNTERING VES­SELS

There are three main situations which you
may encounter with other vessels which
could lead to a collision unless the Steer­ing Rules are followed:

Meeting (you are approaching another
vessel head-on)
Crossing (you are travelling across the
other vessel’s path)
Overtaking (you are passing or being
passed by another vessel)

In the following illustration, your boat is
in the center. You should give the right-of­way 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.

will clear one another if you continue on
your set course and speed.

102044

Crossing

When two power driven vessels are
crossing each other’s path close enough
to run the risk of collision, the vessel
which has the other on the starboard
(right) side must keep out of the way of
the other. If the other vessel is on your
right, you must keep out of its way; you
are the Give-Way vessel. If the other ves­sel is on your port (left) side, remember
that you should maintain course and
direction, provided the other vessel gives
you the right-of-way as it should.

Meeting

If you are meeting another power vessel
head on, and are close enough to run the
risk of collision, neither of you has the
right-of-way! Both of you should alter
course to avoid an accident. You should
keep the other vessel on your port (left)
side. This rule doesn’t apply if both of you

102046

Overtaking

If you are passing another vessel, you are
the “Give-Way” vessel. This means that
the other vessel is expected to maintain

1-7

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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.

OTHER SPECIAL SITUATIONS

There are three other rules you should be
aware of when driving your boat around
other vessels.

Narrow channels and bends

When navigating in narrow channels, you
should keep to the right when it is safe
and practical to do so. If the operator of a
power-driven vessel is preparing to go
around a bend that may obstruct the view
of other water vessels, the operator
should sound a prolonged blast on the
whistle (4 to 6 seconds). If another vessel
is around the bend, it too should sound
the whistle. Even if no reply is heard,
however, the vessel should still proceed
around the bend with caution. If you navi­gate such waters with your boat, you will
need to carry a portable air horn, avail­able from local marine supply stores.

Fishing vessel right-of-way

All vessels which are fishing with nets,
lines or trawls are considered to be “fish­ing vessels” under the International
Rules. Vessels with trolling lines are not
considered fishing vessels. Fishing ves­sels have the right-of-way regardless of
position. Fishing vessels cannot, howev­er, impede the passage of other vessels in
narrow channels.

Sailing vessel right-of-way

Sailing vessels should normally be given
the right-of-way. The exceptions to this
are:

1. When the sailing vessel is overtaking
the power-driven vessel, the power­driven vessel has the right-of-way.

2. Sailing vessels should keep clear of
any fishing vessel.

3. In a narrow channel, a sailing vessel
should not hamper the safe passage
of a power-driven vessel which can
navigate only in such a channel.

Reading buoys and other markers

The waters of the United states are
marked for safe navigation by the lateral
system of buoyage. Simply put, buoys
and markers have an arrangement of
shapes, colors, numbers and lights to
show which side of the buoy a boater
should pass on when navigating in a par­ticular direction. The markings on these
buoys are oriented from the perspective
of being entered from seaward (the
boater is going towards the port). This
means that red buoys are passed on the
starboard (right) side when proceeding
from open water into port, and black
buoys are to port (left) side. When navi­gating out of port, your position with
respect to the buoys should be reversed;
red buoys should be to port and black
buoys to starboard.
Many bodies of water used by boaters are
entirely within the boundaries of a partic­ular state. The Uniform State Waterway
Marking System has been devised for
these waters. This system uses buoys and
signs with distinctive shapes and colors
to show regulatory or advisory informa-

1-8

1

11

A

1

11

Proceeding toward head

of navigation from seaward

CAN BUOY

Odd number. Leave to port.

OR

SECONDARY CHANNEL BUOYS

STARTS NEW NUMBERING SYSTEM

old new

C " 1

"

NUN BUOY

Even number. Leave to starboard

N

"

2

"

No change

BUOY

COLOR CODE

BLACK

RED

GREEN

"

A

"

"

2

"

"

1

"

"

3

"

"

4

"

"

5

"

"

7

"

N

"

2

"

"

6

"

C

"

1

"

RB

"

L

"

RG

"

L

"

or

SECONDARY CHANNEL

MAIN CHANNEL

old

new

22

22

22

AA

LL

LL

Odd number. increasing toward head of naviga-

MAIN CHANNEL BUOYS

"

1

" "

3

" "

5

" "

7

"

tion.Leave to port (left) proceeding upstream.

LIGHTED BUOY (Port Hand)`

White Light

Green Light

old

new

old

new

old

new

LIGHTED BUOY (Starboard Hand)`

"

2

" "

4

" "

6

"

Even number,increasing toward head of naviga­tion. Leave to starboard (right) proceeding up­stream.

White Light Red Light

"

A

"

LIGHTED SAFE WATER BUOY

No number. Marks midchannel, pass on either
side. Letter has no lateral signific anc e, used for

No numb er. To pmo st ban d re d

-

pref err ed

Top Mark

White Light

White Light

OR

OR

LIGHTED PREFERRED CHANNEL TO

RB

"

L

"

RG

"

L

"

PORT BUOY

identification and loc ati on purposes.

channel is to lef t of bu oy . Letter ha s no la te ra l
signif icanc e, used for identification and location
purpos es.

Red Light

Red or
White Light

OR

102052

tion. 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 geo­graphic location. Always consult local
boating authorities before driving your
boat in unfamiliar waters.

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EMU00016

FUELING INSTRUCTIONS

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GASOLINE AND ITS VAPORS ARE HIGH­LY FLAMMABLE AND EXPLOSIVE!
8 Do not smoke when refueling, and

keep away from sparks, flames, or
other sources of ignition.

8 Stop engine before refueling.
8 Refuel in a well-ventilated area. Refuel

portable fuel tanks off the boat.

8 Take care not to spill gasoline. If gaso-

line spills, wipe it up immediately with
dry rags.

8 Do not overfill the fuel tank.
8 Tighten the filler cap securely after

refueling.

8 If you should swallow some gasoline

inhale a lot of gasoline vapor, or get
gasoline in your eyes, get immediate
medical attention.

8

If any gasoline spills onto your skin,
immediately wash with soap and water.
Change clothing if gasoline spills on it.

8 Touch the fuel nozzle to the filler open-

ing or funnel to help prevent electrosta­tic sparks.

cC

Use only new clean gasoline which has
been stored in clean containers and is not
contaminated with water or foreign matter.

EMU00018

GASOLINE (PETROL)

Recommended gasoline:
Regular unleaded gasoline with a mini-

mum octane rating of 86 (Pump
Octane Number) = (R+M)/2

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If knocking or pinging occurs, use a differ­ent brand of gasoline or premium unlead­ed fuel. If unleaded gasoline is not avail­able, then leaded regular gasoline can be
used.

EMU00027

Gasohol

There are two types of gasohol: gasohol
containing ethanol and that containing
methanol. Gasohol containing ethanol
can be used if ethanol content does not
exceed 10% and the fuel meets minimum
octane ratings. Gasohol containing
methanol is not recommended by Yama­ha because it can cause fuel system dam­age or engine performance problems.

EMU00858

ENGINE OIL

Recommended engine oil:
YAMALUBE 2 STROKE OUTBOARD OIL

If the recommended engine oil is not
available, another 2-stroke engine oil with
a NMMA-certified TC-W3 rating may be
used.

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EMU00031

BATTERY REQUIREMENT

cC

Do not use the battery that does not
meet the specified capacity. If different
battery from the specification is used, the
electric system may perform poorly or be
overloaded, causing electrical system
damage.

Choose battery which meets the following
specifications for Electric start model.

Minimum cold crank performance
380 Amps at -17.8°C (0°F)
Minimum reserve capacity
124 minutes at 26.7°C (80°F)

EMU01395

PROPELLER SELECTION

The performance of your outboard motor
will be critically affected by your choice of
propeller, as an incorrect choice could
adversely affect performance and could
also seriously damage the motor. Engine
speed depends on the propeller size and
boat load. If engine speed is too high or
too low for good engine performance,
this will have an adverse effect on the
engine.

1-12

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602011

10-3/4x17-G

1 23

Yamaha outboard motors are fitted with
propellers chosen to perform well over a
range of applications, but there may be
uses where a propeller with a different
pitch would be more appropriate. For a
greater operating load, a smaller-pitch
propeller is more suitable as it enables
the correct engine speed to be main­tained. Conversely, a larger-pitch pro­peller is more suitable for a smaller oper­ating load.

Yamaha dealers stock a range of pro­pellers, and can advise you and install a
propeller on your outboard that is best
suited to your application.

NOTE:

At full throttle and under a maximum
boat load, the engine’s rpm should be
within the upper half of the full throttle
operating range, as listed in “SPECIFICA­TIONS” on page 4-1. Select a propeller
which fulfills this requirement.
If operating under conditions which allow
the engine’s rpm to rise above the maxi­mum recommended range (such as light
boat loads), reduce the throttle setting to
maintain the rpm in the proper operating
range.

1 Propeller diameter (in inches)
2 Propeller pitch (in inches)
3 Type of propeller (propeller mark)

Refer to the section “CHECKING PRO­PELLER” for instructions on propeller
removal and installation.

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EMU01209

START-IN-GEAR PROTECTION

Yamaha outboard motors or Yamaha
approved remote control units are
equipped with start-in-gear protection
device(s). This feature permits the engine
to be started only when it is Neutral.
Always select Neutral before starting the
engine.

1-14

– MEMO –

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EMC00010

Chapter 2

BASIC COMPONENTS

MAIN COMPONENTS..............................2-1

OPERATIONS OF CONTROLS AND

OTHER FUNCTIONS ................................2-2

Fuel tank ................................................2-2

Remote control .....................................2-3

Trim tab .................................................2-7

Trim angle adjusting rod .....................2-7

Tilt support lever ..................................2-8

Top cowling lock lever.........................2-8

WARNING SYSTEM.................................2-9

Overheat warning.................................2-9

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3

4

5

6

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101142*

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EMU01206

902063

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MAIN COMPONENTS

1 Clamp bracket
2 Anode
3 Battery lead
4 Cooling water inlet
5 Trim tab
6 Anti-cavitation plate

7 Anode
8 Trim angle adjusting-rod
9 Tilt-support lever
0 Top cowling
q Fuel hose

* May not be exactly as shown; also may not

be included as standard equipment on all
models.

2-1

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EMC20010

OPERATIONS OF CONTROLS

AND

OTHER FUNCTIONS

EMC21111

FUEL TANK

If your model was equipped with a
portable fuel tank, its function is as fol­lows.

1 Fuel hose joint
2 Fuel meter(If equipped)
3 Fuel tank cap
4 Air vent screw(If equipped)

Fuel hose joint

This connector is provided for connecting
or disconnecting fuel hose.

902051

Fuel meter

This meter is on the fuel tank cap. It
shows current fuel quantity in the fuel
tank approximately.

Fuel tank cap

This cap is for filling fuel. To remove it,
turn it counterclockwise.

Air Vent screw

This screw is on the fuel tank cap. To
loosen it, turn it counterclockwise.

2-2

701036

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F

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701031

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701011*

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EMC80612

REMOTE CONTROL

Both the shifter and the throttle are actu­ated by the remote control lever. In addi­tion, this control also has the electrical
switches.

1 Remote control lever
2 Neutral interlock trigger
3 Neutral throttle lever
4 Main switch
5 Engine stop lanyard switch
6 Power trim and tilt switch
7 Throttle friction adjusting screw

Remote control lever

Moving the lever forward from the Neu­tral position engages Forward gear.
Pulling the lever back from Neutral
engages Reverse. The engine will contin­ue to run at idle until the lever is moved
about 35° (a detent can be felt). Moving
the lever farther opens the throttle, and
the engine will begin to accelerate.

1 Neutral
2 Forward
3 Reverse
4 Shift
5 Fully closed
6 Throttle
7 Fully open

Neutral interlock trigger

To shift out of Neutral, the neutral inter­lock trigger of the remote control lever
must first be pulled up.

2-3

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ON

STARTOFF

701021

Neutral throttle lever

N

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701033*

To open the throttle without shifting into
either Forward or Reverse, place the
remote control lever in the Neutral posi­tion and lift the neutral throttle lever.

NOTE:

The neutral throttle lever will operate only
when the remote control lever is in Neu­tral. The remote control lever will operate
only when the neutral throttle lever is in
the closed position.

1 Fully open
2 Fully closed

Main switch

The main switch controls the ignition sys­tem; its operation is described below.

8 OFF

Electrical circuits switched off.
(The key can be removed.)

8 ON

Electrical circuits switched on.
(The key cannot be removed.)

8 START

Starter-motor will turn and start engine.
(When the key is released, it returns auto­matically to “ON”.)

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EMC28210

Engine stop lanyard switch

The lock-plate on the end of the lanyard
must be attached to the engine stop
switch for the engine to run. The lanyard
should be attached to a secure place on
the operator’s clothing, or arm or leg.
Should the operator fall overboard or
leave the helm, the lanyard will pull out
the lock plate, stopping ignition to the
engine. This will prevent the boat from
running away under power.

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8 Attach the engine stop switch lanyard

to a secure place on your clothing, your
arm or leg while operating.

8 Do not attach the lanyard to clothing

that could tear loose. Do not route the
lanyard in such a way that it could
become entangled, preventing it from
functioning.

8 Avoid accidentally pulling the lanyard

during normal operation. Loss of
engine power means the loss of most
steering control. Also, without engine
power, the boat could slow rapidly.
This could cause people and objects in
the boat to be thrown forward.

NOTE:

The engine cannot be started with the
lock-plate removed.

1 Lock-plate
2 Lanyard

2-5

701035

UP
DN

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EMU01331

Power Trim/Tilt Switch

UP

DN

701034*

The power trim/tilt adjusts the motor
angle in relation to the transom. The
power trim/tilt switch is located on the
remote control lever grip. Pushing the
switch “UP” trims the motor up, then tilts
the motor up. Pressing the switch “DN”
tilts the motor down and trims the motor
down. When the switch button is
released, the motor will stop in its current
position.

NOTE:

Refer to the sections “ADJUSTING TRIM
ANGLE” and “TILTING UP/DOWN” in
Chapter 3 for instructions on usage.

EMU01155

Throttle Friction Adjusting Screw

A friction device in the remote control box
provides adjustable resistance to move­ment of the remote control lever, and can
be set according to operator preference.
An adjusting screw is located on the front
of the remote control box.

Resistance Screw

Increase Turn clockwise

Decrease Turn counterclockwise

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Do not overtighten the friction adjusting
screw. If there is too much resistance, it
may be difficult to move the lever, which
could result in an accident.

2-6

E

404011

q

w

603011

A

B

EMD04011*

TRIM TAB

The trim tab should be adjusted so that
the steering control can be turned to
either the right or left by
applying the same amount of force.

w

An improperly adjusted trim tab may
cause difficult steering. Always test run
after the trim tab has been installed or
replaced to be sure steering is correct. Be
sure you have tightened the bolt after
adjusting the trim tab.

1 Trim tab
2 Bolt

Boat tends to veer

To the left
(port side)

To the right
(starboard side)

The rear end of trim tab

Turn the left(port side),
“A” in the figure

Turn the right
(starboard side),
“B” in the figure

cC

The trim tab also serves as an anode to
protect the engine from electroche mical
corrosion.
Never paint the trim tab as it will become
ineffective as an anode.

EMU01297

TRIM ANGLE ADJUSTING ROD

The position of the trim angle adjusting
rod determines the minimum trim angle
of the outboard motor in relation to the
transom.

2-7