Yamaha 30H, 25B User Manual

OWNER’S MANUAL

25B
30H

69R-28199-75-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 25BMH, 30HMH, 30HW 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

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-

25B, 30H

OWNER’S MANUAL

©2006 by Yamaha Motor Co., Ltd.

1st Edition, March 2006

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

Safety information ........................... 2

Important labels............................... 3

Warning labels ..................................3

Fueling instructions ......................... 3

Gasoline............................................ 4

Engine oil ..........................................4

Battery requirement......................... 4

Battery specifications ........................ 4

Propeller selection........................... 4

Start-in-gear protection ................... 5

Basic components ............................6

Main components............................ 6

Fuel tank ...........................................6

Fuel joint ........................................... 7

Fuel gauge ........................................ 7

Fuel tank cap .................................... 7

Air vent screw ................................... 7

Remote control.................................. 7

Remote control lever......................... 7

Neutral interlock trigger..................... 8

Neutral throttle lever.......................... 8

Choke switch..................................... 8

Tiller handle ...................................... 9

Gear shift lever.................................. 9

Throttle grip....................................... 9

Throttle indicator ...............................9

Throttle friction adjuster................... 10

Engine stop lanyard switch .............10

Engine stop button .......................... 11

Choke knob for pull type .................11

Manual starter handle .....................11

Main switch .....................................12

Steering friction adjuster .................12

Trim tab........................................... 12

Trim rod (tilt pin).............................. 13

Shallow water lever......................... 13

Tilt lock mechanism......................... 13

Tilt support knob ............................. 13

Top cowling lock lever(s)

(turn type) ..................................... 14

2-pin connector ...............................14

Battery charging information ...........14

Warning system ............................ 15

Overheat warning............................ 15

Operation ......................................... 16

Installation..................................... 16

Mounting the outboard motor .......... 16

Clamping the outboard motor.......... 17

Breaking in engine ........................ 18

Gasoline and engine oil mixing

chart (50:1).................................... 18

Procedure for pre-mixed models..... 18

Preoperation checks ..................... 19

Fuel .................................................19

Oil.................................................... 19

Controls........................................... 19

Engine ............................................. 19

Filling fuel and engine oil .............. 19

Filling fuel for portable tank ............. 19

Gasoline and oil mixing (100:1)....... 19

Operating engine .......................... 20

Feeding fuel (portable tank) ............20

Starting engine ................................ 21

Warming up engine....................... 26

Choke start models .........................26

Shifting.......................................... 27

Forward (tiller handle and remote

control models) .............................27

Reverse (manual tilt and hydro tilt

models) ......................................... 28

Stopping engine............................ 29

Procedure........................................ 29

Trimming outboard motor.............. 29

Adjusting trim angle for manual tilt

models ..........................................30

Adjusting boat trim ..........................31

Tilting up and down....................... 31

Procedure for tilting up (manual tilt

models) ......................................... 32

Procedure for tilting down (manual

tilt models)..................................... 33

Cruising in shallow water .............. 33

Cruising in shallow water (manual

tilt models)..................................... 33

Cruising in other conditions........... 34

Table of contents

Maintenance..................................... 36

Specifications ................................ 36

Transporting and storing outboard

motor ........................................... 37

Clamp screw mounting models....... 38

Storing outboard motor ...................38

Procedure ....................................... 38

Lubrication (except oil injection

models) ......................................... 39

Battery care..................................... 39

Cleaning the outboard motor .......... 40

Checking painted surface of

motor............................................. 40

Periodic maintenance.................... 40

Replacement parts.......................... 41

Maintenance chart .......................... 42

Greasing ......................................... 44

Cleaning and adjusting spark

plug ............................................... 44

Checking fuel system...................... 45

Inspecting fuel filter ......................... 46

Cleaning fuel filter ...........................46

Inspecting idling speed ................... 47

Checking wiring and connectors ..... 47

Exhaust leakage ............................. 47

Water leakage................................. 47

Checking propeller .......................... 48

Removing the propeller................... 49

Installing the Propeller .................... 49

Changing gear oil............................ 49

Cleaning fuel tank ...........................50

Inspecting and replacing

anode(s)........................................ 51

Checking battery (for electric start

models) ......................................... 51

Connecting the battery.................... 52

Disconnecting the battery ............... 53

Checking top cowling ...................... 53

Coating the boat bottom.................. 53

Trouble Recovery............................ 54

Troubleshooting ............................ 54

Temporary action in emergency.... 57

Impact damage ...............................57

Replacing fuse ................................57

Starter will not operate .................... 58

Emergency starting engine .............58

Treatment of submerged motor .... 59

Procedure........................................ 59

General information

EMU25170

Identification numbers record

EMU25183

Outboard motor serial number

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

1

ZMU02931

1. Outboard motor serial number location

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
reference in case you need a new key.

1

1

ZMU04730

1. EC label location

ZMU01696

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

●

Have an approved personal flotation de­vice (PFD) on board for every occupant. It

General information

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

2

General information

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.

●

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.

EMU25382

Important labels

EMU25395

Warning labels

ZMU04749

ZMU04750

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.

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

3

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

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.

EMU25650

Engine oil

Recommended engine oil:

YAMALUBE 2-stroke outboard motor
oil

If the recommended engine oil is not avail­able, another 2-stroke engine oil with an

NMMA-certified TC-W3 rating may be used.

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):

30HW 347.0 A

Minimum rated capacity (20HR/IEC):

30HW 40.0 Ah

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.

4

General information

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.

x

-

123

ZMU04605

1. Propeller diameter in inches

2. Propeller pitch in inches

3. Type of propeller (propeller mark)

x

-

123

the engine in the proper operating range.

For instructions on propeller removal and in­stallation, see page 48.

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

ZMU01713

1. Start-in-gear protection label

ZMU04604

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

5

Basic components

EMU25797

Main components

NOTE:

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

25B, 30H

11

1

10

2

9

8

7

3

6

4

5

1. Top cowling

2. Top cowling lock lever

3. Anti-cavitation plate

4. Trim tab

5. Propeller

6. Cooling water inlet

7. Shallow water lever*

8. Tilt rod

9. Clamp bracket

10. Starter button*

11. Manual starter handle

12. Engine stop button/Engine stop lanyard
switch*

13. Tiller handle*

14. Choke knob

19

13

12

14

15

18

16

17

20

19

18
17

21

15. Tilt lock lever

16. Transom clamp handle

17. Rope attachment

18. Tilt support knob

19. Gear shift lever

20. Remote control box (side mount type)*

21. Fuel tank*

EMU25802

Fuel tank

If your model was equipped with a portable

11

14

15

16

ZMU04751

6

Basic components

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.

2

1

4

3

ZMU02284

1. Fuel joint

2. Fuel gauge

3. Fuel tank cap

4. Air vent screw

EMU25830

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. Fuel joint

2. Fuel gauge

3. Fuel tank cap

4. Air vent screw

7

1. Remote control lever

2. Neutral interlock trigger

3. Neutral throttle lever

4. Main switch / choke switch

5. Engine stop lanyard switch

6. Free accelerator

EMU26190

Remote control lever

Moving the lever forward from the neutral po-

Basic components

sition 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

EMU26201

Neutral interlock trigger

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

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

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

8

Basic components

EMU25911

Tiller handle

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

N

R

1

3

1. Neutral “”

2. Forward “”

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.

F
2

ZMU02939

ZMU02937

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.

9

ZMU02945

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.

Basic components

1

ZMU02938

1. Throttle indicator

EMU25971

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.

EWM00031

WARNING

Do not overtighten the friction adjuster. If
there is too much resistance, it could be
difficult to move the remote control lever
or throttle grip, which could result in an
accident.

ZMU02940

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.

10

Basic components

NOTE:

The engine cannot be started with the lock
plate removed.

1

ZMU02905

2

ZMU02941

1. Lock plate

2. Lanyard

1

2

ZMU03171

1. Lock plate

2. Lanyard

EMU26001

Engine stop button

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

EMU26011

Choke knob for pull type

To supply the engine with the rich fuel mix­ture required to start, pull out this knob.

ZMU02906

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.

11

ZMU02942

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.

“”

●

(start)

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.

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.

Basic components

ZMU02908

To increase resistance, turn the adjuster
clockwise.
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.

EMU26250

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.

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.

12

Basic components

1

2

1. Trim tab

2. Bolt

EMU26261

A

B

ZMU02289

Trim rod (tilt pin)

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

ZMU02946

EMU26270

Shallow water lever

Lifting this lever will tilt the motor up partially
to provide more clearance when operating in
shallow water.

ZMU02917

EMU30530

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

ZMU02910

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.

13

Basic components

ZMU02947

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

ZMU02948

1. Top cowling lock lever(s)

EMU26410

2-pin connector

AC 12 V-40/60/80W power is delivered
through this connector. When using it, keep
in mind the following points:

ZMU04737

●

Use a genuine Yamaha connector.

●

Use lighting equipment only.

●

Connect lighting equipment directly to the
2-pin connector.

●

Capacity of the lighting equipment must be
more than 12 V-40/60/80W; otherwise the
bulb could burn out.

●

When the connector is not in use, place
the cap on it.

ECM01000

CAUTION:

Do not connect the 2-pin connector di­rectly to the battery terminals. Otherwise
the electric system will be damaged.

EMU26420

Battery charging information

If you need to charge the battery, use a gen­uine charge cable to make the charging cir­cuit.
For details on the cable connections, consult
your Yamaha dealer.

NOTE:

●

Do not use the 2-pin connector while
charging. The battery will not be charged.

●

If you need to use lighting equipment while
charging the battery, connect it to the bat­tery, not to the 2-pin connector.

14

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.

EMU26816

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-

●

cator, it will light or blink.

●

The buzzer will sound (if equipped on the
tiller handle, remote control box, or main
switch panel).

ZMU03026

ZMU03025

If the warning system has activated, stop the
engine and check the cooling water inlet for
clogging.

15