Yamaha 60F 70B

60F

70B

OWNER’S MANUAL

Read this manual carefully before operating this outboard motor.

6H3-28199-2U-E0

EMU25052

Read this manual carefully before operating this outboard motor. Keep this manual onboard in a waterproof bag when boating. This manual should stay with the outboard motor if it is sold.

Important manual information

EMU25105

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.

: This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death.

EWM00781

WARNING

A WARNING indicates a hazardous situation which, if not avoided, could result in death or serious injury.

ECM00701

NOTICE

A NOTICE indicates special precautions that must be taken to avoid damage to the outboard motor or other property.

TIP:

A TIP 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 manual, 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. Any damage resulting from neglect of these instructions is not covered by warranty.

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.

TIP:

The 60FETO, 70BETO 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.

EMU25121

60F, 70B

OWNER’S MANUAL

©2008 by Yamaha Motor Co., Ltd.

1st Edition, April 2008

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

Safety information............................. 1

Outboard motor safety .................... 1

Propeller............................................ 1

Rotating parts.................................... 1

Hot parts ........................................... 1

Electric shock .................................... 1

Power trim and tilt ............................. 1

Engine shut-off cord (lanyard)........... 1

Gasoline ............................................ 1

Gasoline exposure and spills ............ 2

Carbon monoxide.............................. 2

Modifications ..................................... 2

Boating safety ................................. 2

Alcohol and drugs ............................. 2

Personal flotation devices ................. 2

People in the water ........................... 2

Passengers ....................................... 2

Overloading....................................... 2

Avoid collisions ................................. 3

Weather ............................................ 3

Passenger training ............................ 3

Boating safety publications ............... 3

Laws and regulations ........................ 3

General information .......................... 4

Identification numbers record .......... 4

Outboard motor serial number .......... 4

Key number....................................... 4

EC Declaration of Conformity

(DoC)............................................. 4

CE Marking ..................................... 4

C-Tick label ..................................... 5

Read manuals and labels................ 6

Warning labels .................................. 6

Specifications and requirements..... 9

Specifications .................................. 9

Installation requirements ............... 10

Boat horsepower rating ................... 10

Mounting motor ............................... 10

Remote control requirements ........ 10

Battery requirements ..................... 10

Battery specifications ...................... 10

Mounting battery ............................. 10

Multiple batteries ............................. 11

Propeller selection......................... 11

Start-in-gear protection ................. 12

Engine oil requirements ................ 12

Fuel requirements ......................... 12

Gasoline .......................................... 12

Muddy or acidic water ................... 12

Anti-fouling paint ........................... 12

Motor disposal requirements......... 13

Emergency equipment .................. 13

Emission control information......... 13

U.S. insular areas............................ 13

Components .................................... 15

Components diagram.................... 15

Fuel tank ......................................... 15

Fuel joint.......................................... 16

Fuel gauge ...................................... 16

Fuel tank cap................................... 16

Air vent screw.................................. 16

Remote control box ......................... 16

Remote control lever ....................... 16

Neutral interlock trigger ................... 17

Neutral throttle lever ........................ 17

Tiller handle..................................... 17

Gear shift lever ................................ 17

Throttle grip ..................................... 18

Throttle indicator ............................. 18

Throttle friction adjuster................... 18

Engine shut-off cord (lanyard) and clip................................................. 19

Engine stop button .......................... 19

Main switch ..................................... 20

Steering friction adjuster ................. 20

Power trim and tilt switch on remote control or tiller handle ....... 20

Power trim and tilt switch on bottom engine cowling .................. 21

Trim tab with anode......................... 21

Trim rod (tilt pin) .............................. 22

Tilt support lever for power trim and tilt model................................. 22

Top cowling lock lever(s)

(turn type)...................................... 22

Instruments and indicators............ 24

Digital tachometer ......................... 24

Tachometer ..................................... 24

Trim meter ....................................... 24

Hour meter ...................................... 24


Oil level indicator (digital type) ........ 25

Overheat-alert indicator .................. 25

Digital speedometer ...................... 25

Speedometer .................................. 25

Fuel gauge ...................................... 26

Trip meter / Clock / Voltmeter ......... 26

Fuel level-alert indicator .................. 27

Low battery voltage-alert indicator ........................................ 27

Analog tachometer ........................ 27

Oil level indicators (three indicators) ..................................... 27

Analog speedometer ..................... 28

Analog trim meter .......................... 28

Hour meter .................................... 28

Engine control system.................... 29

Alert system .................................. 29

Overheat alert ................................. 29

Oil level alert and oil filter clogging alert............................................... 29

Installation ....................................... 31

Installation ..................................... 31

Mounting the outboard motor .......... 31

Operation ......................................... 33

First-time operation ....................... 33

Breaking in engine .......................... 33

Getting to know your boat ............... 33

Checks before starting engine ...... 33

Fuel level......................................... 34

Remove cowling.............................. 34

Fuel system..................................... 34

Controls........................................... 35

Engine shut-off cord (lanyard)......... 35

Oil.................................................... 35

Engine ............................................. 35

Operation after a long period of storage.......................................... 35

Install cowling.................................. 36

Checking power trim and tilt system .......................................... 37

Battery............................................. 37

Filling fuel and engine oil............... 38

Filling fuel for portable tank ............. 38

Filling oil for electric start models .... 38

Oil level indicator operation............. 40

Operating engine .......................... 40

Feeding fuel (portable tank) ............ 40

Starting engine ................................ 41

Checks after starting engine ......... 44

Cooling water .................................. 44

Warming up engine....................... 44

Electric start and prime start models .......................................... 44

Checks after engine warm-up ....... 44

Shifting ............................................ 44

Stop switches .................................. 44

Shifting .......................................... 45

Stopping boat................................ 46

Stopping engine ............................ 46

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

Trimming outboard motor.............. 47

Adjusting trim angle (Power trim and tilt) .......................................... 48

Adjusting boat trim .......................... 49

Tilting up and down....................... 49

Procedure for tilting up (power trim and tilt models).............................. 50

Procedure for tilting down (power trim and tilt models)....................... 51

Shallow water................................ 52

Power trim and tilt models ............... 52

Cruising in other conditions........... 53

Maintenance .................................... 54

Transporting and storing outboard motor ........................................... 54

Storing outboard motor ................... 54

Procedure........................................ 54

Lubrication (oil injection models) ..... 55

Cleaning the outboard motor........... 56

Checking painted surface of motor............................................. 56

Periodic maintenance ................... 56

Replacement parts .......................... 56

Severe operating conditions............ 57

Maintenance chart 1........................ 58

Maintenance chart 2........................ 60

Greasing.......................................... 61

Cleaning and adjusting spark plug ............................................... 61

Checking fuel filter........................... 62


Inspecting idling speed ................... 62

Checking water in engine oil tank ... 63

Checking wiring and connectors ..... 63

Checking propeller .......................... 63

Removing propeller ......................... 64

Installing propeller ........................... 64

Changing gear oil ............................ 65

Cleaning fuel tank ........................... 66

Inspecting and replacing anode(s)........................................ 67

Checking battery (for electric start models) ......................................... 67

Connecting the battery .................... 68

Disconnecting the battery ............... 68

Trouble Recovery ............................ 69

Troubleshooting ............................ 69

Temporary action in emergency.... 72

Impact damage ............................... 72

Replacing fuse ................................ 72

Power trim and tilt will not operate.......................................... 73

Starter will not operate .................... 73

Emergency starting engine ............. 74

Engine fails to operate .................. 75

Ignition system malfunction............. 75

Cold engine fails to start ................. 75

Treatment of submerged motor..... 77

Safety information

EMU33622

Outboard motor safety

Observe these precautions at all times.

EMU36500

Propeller

People can be injured or killed if they come in contact with the propeller. The propeller can keep moving even when the motor is in neutral, and sharp edges of the propeller can cut even when stationary.

●

Shut off the engine when a person is in the water near you.

●

Keep people out of reach of the propeller, even when the engine is off.

EMU33630

Rotating parts

Hands, feet, hair, jewelry, clothing, PFD straps, etc. can become entangled with internal rotating parts of the engine, resulting in serious injury or death.

Keep the top cowling in place whenever possible. Do not remove or replace the cowling with the engine running.

Only operate the engine with the cowling removed according to the specific instructions in the manual. Keep hands, feet, hair, jewelry, clothing, PFD straps, etc. away from any exposed moving parts.

EMU33640

Hot parts

During and after operation, engine parts are hot enough to cause burns. Avoid touching any parts under the top cowling until the engine has cooled.

EMU33650

Electric shock

Do not touch any electrical parts while starting or operating the engine. They can cause shock or electrocution.

EMU33660

Power trim and tilt

Body parts can be crushed between the motor and the clamp bracket when the motor is trimmed or tilted. Keep body parts out of this area at all times. Be sure no one is in this area before operating the power trim and tilt mechanism.

The power trim and tilt switches operate even when the main switch is off. Keep people be away from the switches whenever working around the motor.

Never get under the lower unit while it is tilted, even when the tilt support lever is locked.

Severe injury could occur if the outboard motor accidentally falls.

EMU33671

Engine shut-off cord (lanyard)

Attach the engine shut-off cord so that the engine stops if the operator falls overboard or leaves the helm. This prevents the boat from running away under power and leaving people stranded, or running over people or objects.

Always attach the engine shut-off cord to a secure place on your clothing or your arm or leg while operating. Do not remove it to leave the helm while the boat is moving. Do not attach the cord to clothing that could tear loose, or route the cord where it could become entangled, preventing it from functioning.

Do not route the cord where it is likely to be accidentally pulled out. If the cord is pulled during operation, the engine will shut off and you will lose most steering control. The boat could slow rapidly, throwing people and objects forward.

EMU33810

Gasoline

Gasoline and its vapors are highly flammable and explosive.

Always, refuel according to the procedure on page 40 to reduce the risk of fire and explosion.

1

2


EMU33820

Gasoline exposure and spills

Take care not to spill gasoline. If gasoline spills, wipe it up immediately with dry rags.

Dispose of rags properly.

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

If you swallow gasoline, inhale a lot of gasoline vapor, or get gasoline in your eyes, get immediate medical attention. Never siphon fuel by mouth.

EMU33900

Carbon monoxide

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.

EMU33780

Modifications

Do not attempt to modify this outboard motor. Modifications to your outboard motor may reduce safety and reliability, and render the outboard unsafe or illegal to use.

EMU33740

Boating safety

This section includes a few of the many important safety precautions that you should follow when boating.

EMU33710

Alcohol and drugs

Never operate after drinking alcohol or taking drugs. Intoxication is one of the most common factors contributing to boating fatalities.

EMU33720

Personal flotation devices

Have an approved personal flotation device

(PFD) on board for every occupant. Yamaha recommends that you must 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.

EMU33730

People in the water

Always watch carefully for people in the water, such as swimmers, skiers, or divers, whenever the engine is running. When someone is in the water near the boat, shift into neutral and shut off the motor.

Stay away from swimming areas. Swimmers can be hard to see.

The propeller can keep moving even when the motor is in neutral. Shut off the engine when a person is in the water near you.

EMU33750

Passengers

Consult your boat manufacturer’s instructions for details about appropriate passenger locations in your boat and be sure all passengers are positioned properly before accelerating and when operating above an idle speed. Standing or sitting in non-designated locations may result in being thrown either overboard or within the boat due to waves, wakes, or sudden changes in speed or direction. Even when people are positioned properly, alert your passengers if you must make any unusual maneuver. Always avoid jumping waves or wakes.

EMU33760

Overloading

Do not overload the boat. Consult the boat capacity plate or boat manufacturer for maximum weight and number of passengers. Be sure that weight is properly distributed according to the boat manufacturers instructions. Overloading or incorrect weight distribution can compromise the boats han-


dling and lead to an accident, capsizing or swamping.

EMU33771

Avoid collisions

Scan constantly

for people, objects, and other boats. Be alert for conditions that limit your visibility or block your vision of others.

ZMU06025 boating in hazardous weather.

EMU33880

Passenger training

Make sure at least one other passenger is trained to operate the boat in the event of an emergency.

EMU33890

Boating safety publications

Be informed about boating safety. Additional publications and information can be obtained from many boating organizations.

EMU33600

Laws and regulations

Know the marine laws and regulations where you will be boating- and obey them. Several sets of rules prevail according to geographic location, but all are basically the same as the

International Rules of the Road.

Operate defensively

at safe speeds and keep a safe distance away from people, objects, and other boats.

●

Do not follow directly behind other boats or waterskiers.

●

Avoid sharp turns or other maneuvers that make it hard for others to avoid you or un-

● derstand where you are going.

Avoid areas with submerged objects or shallow water.

●

Ride within your limits and avoid aggressive maneuvers to reduce the risk of loss

● of control, ejection, and collision.

Take early action

to avoid collisions. Remember,

boats do not have brakes

, and stopping the engine or reducing throttle can reduce the ability to steer. If you are not sure that you can stop in time before hitting an obstacle, apply throttle and turn in another direction.

EMU33790

Weather

Stay informed about the weather. Check weather forecasts before boating. Avoid

3

4

General information

EMU25171

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. Key number

1

ZMU02931

1. Outboard motor serial number location

EMU25190

Key number

If a main key switch is equipped with the motor, the key identification number is stamped on your key as shown in the illustration.

Record this number in the space provided for reference in case you need a new key.

EMU37290

EC Declaration of Conformity

(DoC)

This outboard motor conforms to certain portions of the European Parliament directive relating to machinery.

Each conformed outboard motor accompanied with EC DoC.EC DoC contains the following information;

●

Name of Engine Manufacture

●

Model name

●

Product code of model (Approved model code)

●

Code of conformed directives

EMU25203

CE Marking

Outboard motors affixed with this “CE”marking conform with the directives of; 98/37/EC,

94/25/EC - 2003/44/EC and 2004/108/EC.

1

1. CE marking location

ZMU02563


ZMU01697

ZMU06040

EMU25213

C-Tick label

Engines affixed with this label conform to certain portion(s) of the Australian Radio

Communications Act.

1

1. C-Tick label location

ZMU04893

5

6


EMU33520

Read manuals and labels

Before operating or working on this motor:

●

Read this manual.

●

Read any manuals supplied with the boat.

●

Read all labels on the outboard motor and the boat.

If you need any additional information, contact your Yamaha dealer.

EMU33831

Warning labels

If these labels are damaged or missing, contact your Yamaha dealer for replacements.

1

2

3

ZMU06194

2


1

3

EMU33912

Contents of labels

The above warning labels mean as follows.

1

EWM01691

WARNING

Emergency starting does not have startin-gear protection. Ensure shift control is in neutral before starting engine.

2

EWM01681

WARNING

●

Keep hands, hair, and clothing away from rotating parts while the engine is

●

running.

Do not touch or remove electrical parts when starting or during operation.

ZMU05670

3

EWM01671

WARNING

●

Read Owner’s Manuals and labels.

●

Wear an approved personal flotation device (PFD).

●

Attach engine shut-off cord (lanyard) to your PFD, arm, or leg so the engine stops if you accidentally leave the helm, which could prevent a runaway boat.

7

8


EMU33843

Symbols

The following symbols mean as follows.

Notice/Warning

Electrical hazard

Read Owner’s Manual

ZMU05696

ZMU05666

Remote control lever/gear shift lever operating direction, dual direction

ZMU05664

Hazard caused by continuous rotation

Engine start/ Engine cranking

ZMU05667

ZMU05668

ZMU05665

EMU31480

Specifications

TIP:

“(AL)” stated in the specification data below represents the numerical value for the aluminum propeller installed.

Likewise, “(SUS)” represents the value for stainless steel propeller installed and “(PL)” for plastic propeller installed.

EMU2821C

Dimension:

Overall length:

713 mm (28.1 in)

Overall width:

364 mm (14.3 in)

Overall height L:

1374 mm (54.1 in)

Transom height L:

521 mm (20.5 in)

Weight (AL) L:

105.5 kg (233 lb)

Weight (SUS) L:

107.5 kg (237 lb)

Performance:

Full throttle operating range:

60FETO 4500–5500 r/min

70BETO 5000–6000 r/min

Maximum output:

60FETO 44.1 kW@5000 r/min

(60 HP@5000 r/min)

70BETO 51.5 kW@5500 r/min

(70 HP@5500 r/min)

Idling speed (in neutral):

800

±

50 r/min

Engine:

Type:

2-stroke L

Displacement:

849.0 cm

3

Bore

×

stroke:

Specifications and requirements

72.0

×

69.5 mm (2.83

×

2.74 in)

Ignition system:

CDI (micro computer)

Spark plug (NGK):

B8HS-10

Spark plug with resistor (NGK):

BR8HS-10

Spark plug gap:

0.9–1.0 mm (0.035–0.039 in)

Control system:

Remote control

Starting system:

Electric

Starting carburetion system:

Prime start

Min. cold cranking amps (CCA/EN):

430.0 A

Min. rated capacity (20HR/IEC):

70.0 Ah

Maximum generator output:

6.0 A

Drive unit:

Gear positions:

Forward-neutral-reverse

Gear ratio:

2.33 (28/12)

Trim and tilt system:

Power trim and tilt

Propeller mark:

K

Fuel and oil:

Recommended fuel:

Regular unleaded gasoline

Fuel tank capacity:

24 L (6.34 US gal, 5.28 Imp.gal)

Recommended engine oil:

YAMALUBE 2-stroke outboard motor oil

Lubrication:

Oil injection

Engine oil tank capacity:

9


2.8 L (2.96 US qt, 2.46 Imp.qt)

Recommended gear oil:

Hypoid gear oil SAE#90

Gear oil quantity:

0.610 L (0.645 US qt, 0.537 Imp.qt)

Tightening torque for engine:

Spark plug:

25.0 Nm (2.55 kgf-m, 18.4 ft-lb)

Propeller nut:

35.0 Nm (3.57 kgf-m, 25.8 ft-lb)

Noise and vibration level:

Operator sound pressure level

(ICOMIA 39/94 and 40/94):

70BETO 93.4 dB(A)

Sound power level

(ICOMIA 39/94 and 40/94):

70BETO 101.2 dB(A)

Vibration on tiller handle (ICOMIA 38/94):

70BETO 3.0 m/s

2

EMU33553

Installation requirements

EMU33563

Boat horsepower rating

EWM01560

WARNING

Overpowering a boat can cause severe instability.

Before installing the outboard motor(s), confirm that the total horsepower of your motor(s) does not exceed the boats maximum horsepower rating. See the boat’s capacity plate or contact the manufacturer.

EMU33571

Mounting motor

EWM01570

WARNING

●

Improper mounting of the outboard motor could result in hazardous conditions such as poor handling, loss of control, or fire hazards.

●

Because the motor is very heavy, special equipment and training is required to mount it safely.

Your dealer or other person experienced in proper rigging should mount the motor using correct equipment and complete rigging instructions. For further information, see page

31.

EMU33581

Remote control requirements

EWM01580

WARNING

●

If the engine starts in gear, the boat can move suddenly and unexpectedly, possibly causing a collision or throwing passengers overboard.

●

If the engine ever starts in gear, the start-in-gear protection device is not working correctly and you should discontinue using the outboard. Contact your Yamaha dealer.

The remote control unit must be equipped with a start-in-gear protection device(s). This device prevents the engine from starting unless it is in neutral.

EMU25694

Battery requirements

EMU25721

Battery specifications

Minimum cold cranking amps (CCA/EN):

430.0 A

Minimum rated capacity (20HR/IEC):

70.0 Ah

The engine cannot be started if battery voltage is too low.

EMU36290

Mounting battery

Mount the battery holder securely in a dry, well-ventilated, vibration-free location in the boat.

WARNING! Do not put flammable

10

Specifications and requirements items, or loose heavy or metal objects in the same compartment as the battery.

Fire, explosion or sparks could result.

[EWM01820]

EMU36300

Multiple batteries

To connect multiple batteries, such as for multiple engine configurations or for an accessory battery, consult your Yamaha dealer about battery selection and correct wiring.

EMU34191

Propeller selection

Next to selecting an outboard, choosing the right propeller is one of the most important purchasing decisions a boater can make.

The type, size, and design of your propeller have a direct impact on acceleration, top speed, fuel economy, and even engine life.

Yamaha designs and manufactures propellers for every Yamaha outboard motor and every application.

Your outboard motor came with a Yamaha propeller chosen to perform well over a range of applications, but there may be uses where a different propeller would be more appropriate.

Your Yamaha dealer can help you select the right propeller for your boating needs. Select a propeller that will allow the engine to reach the middle or upper half of the operating range at full throttle with the maximum boatload. Generally, chose a larger pitch propeller for a smaller operating load and a smaller pitch propeller for a heavier load. If you carry loads that vary widely, chose the propeller that lets the engine run in the proper range for your maximum load but remember that you may need to reduce your throttle setting to stay within the recommended engine speed range when carrying lighter loads.

For instructions on propeller removal and installation, see page 63.

1. Propeller diameter in inches

2. Propeller pitch in inches

3. Type of propeller (propeller mark)

x -

1 2 3 x

-

1 2 3

1. Propeller diameter in inches

2. Propeller pitch in inches

3. Type of propeller (propeller mark)

ZMU04605

ZMU04606

x -

1 2 3

ZMU04609

11


EMU25770

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 in neutral. Always select neutral before starting the engine.

EMU25651

Engine oil requirements

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.

EMU36360

Fuel requirements

EMU36770

Gasoline

Use a good quality gasoline that meets the minimum octane rating. If knocking or pinging occurs, use a different brand of gasoline or premium unleaded fuel. Yamaha recomends that you use alcohol-free (see

Gasohol) gasoline whenever possible.

Recommended gasoline:

Regular unleaded gasoline

Gasohol

There are two types of gasohol: gasohol containing ethanol (E10) and that containing methanol. Ethanol can be used if the ethanol content does not exceed 10% and the fuel meets the minimum octane ratings. All ethanol blends containing more than 10% ethanol can cause fuel system damage or cause engine starting and running problems.

Yamaha does not recommend gasohol containing methanol because it can cause fuel system damage or engine performance problems.

EMU36880

Muddy or acidic water

Yamaha strongly recommends that you have your dealer install the optional chromiumplated water pump kit if you use the outboard motor in muddy or acidic water conditions.

However, depending on the model it might not be required.

EMU36330

Anti-fouling paint

A clean hull improves boat performance. The boat bottom should be kept as clean of marine growth as possible. If necessary, the boat bottom can be coated with an anti-fouling paint approved for your area to inhibit marine growth.

Do not use anti-fouling paint which includes copper or graphite. These paints can cause more rapid engine corrosion.

ECM01980

NOTICE

●

Do not use leaded gasoline. Leaded gasoline can seriously damage the en-

●

gine.

Avoid getting water and contaminants in the fuel tank. Contaminated fuel can cause poor performance or engine damage. Use only fresh gasoline that has been stored in clean containers.

12


1

ZMU06193

EMU36340

Motor disposal requirements

Never illegally discard (dump) the motor

Yamaha recommends consulting the dealer about discarding the motor.

EMU36351

Emergency equipment

Keep the following items onboard in case

●

● there is trouble with the motor.

●

A tool kit with assorted screwdrivers, pliers, wrenches (including metric sizes), and electrical tape.

Waterproof flashlight with extra batteries.

An extra engine shut-off cord (lanyard) with clip.

●

Spare parts, such as an extra set of spark plugs.

Consult your Yamaha dealer for details.

EMU25221

Emission control information

EMU25310

U.S. insular areas

Engines affixed with the label pictured below conform to U.S. Environmental Protection

Agency (EPA) regulations for marine SI engines. See the label affixed to your engine for details.

EMU25322

Approval label of emission control certificate

This label is attached to the bottom cowling.

Existing Technology; N/A

1. Approval label location

EMISSION CONTROL INFORMATION

ENGINE FAMILY :

THIS ENGINE CONFORMS TO 2001 U.S. EPA REGULATIONS FOR MARINE SI ENGINES.

REFER TO THE OWNERS MANUAL FOR MAINTENANCE SPECIFICATIONS AND ADJUSTMENTS.

FELs :

SPARK PLUG : g/kW-hr

DISPLACEMENT :

ADVERTISED POWER : cm kW

3

IDLE SPEED :

SPARK PLUG GAP (mm) : rpm IN NEUTRAL

FUEL : GASOLINE

VALVE LASH (mm) : IN : N/A EX : N/A

ZMU05230

EMU25332

Manufactured date label

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

1

1. Manufactured date label location

ZMU04893

13


14

Components

EMU2579H

Components diagram

TIP:

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

60F, 70B

1

12 13

11

10

9

2

3

4

14

5

6

7

8

17

20

15

SPEED

YAMAHA

Km/h knot mph km mile

TRIP TIME BATT set mode

18

16

19

1. Oil tank filler cap

2. Top cowling

3. Power trim and tilt switch

4. Tilt support lever

5. Trim rod

6. Anti-cavitation plate

7. Trim tab (anode)

8. Propeller

9. Cooling water inlet

10. Anode

11. Top cowling lock lever

12. Tiller handle*

13. Remote control box (side mount type)

14. Digital tachometer

15. Digital speedometer

ZMU04914

16. Tachometer*

17. Speedometer*

18. Trim meter*

19. Hour meter*

20. Fuel tank*

EMU25802

Fuel tank

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

EWM00020

WARNING

The fuel tank supplied with this engine is its dedicated fuel reservoir and must not be used as a fuel storage container. Com-

15

Components mercial users should conform to relevant licensing or approval authority regulations.

2

1

1. Fuel joint

2. Fuel gauge

3. Fuel tank cap

4. Air vent screw

3

4

ZMU02284


2. Remote control lever

3. Neutral interlock trigger

4. Neutral throttle lever

5. Main switch / choke switch

6. Engine shut-off switch

7. Throttle friction adjuster

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.

EMU26181

Remote control box

The remote control lever actuates both the shifter and the throttle. The electrical switches are mounted on the remote control box.

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

16

Components

6. Throttle

7. Fully open

EMU26201

Neutral interlock trigger

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

1. Fully open

2. Fully closed

EMU25911

Tiller handle

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


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.

TIP:

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.

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.

17

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.

1. Throttle indicator

EMU25973

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.

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.

[EWM00032]

To decrease resistance, turn the adjuster counterclockwise.

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.

18

Components

When constant speed is desired, tighten the adjuster to maintain the desired throttle setting.

EMU25993

Engine shut-off cord (lanyard) and clip

The clip must be attached to the engine shutoff switch for the engine to run. The cord 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 cord will pull out the clip, stopping ignition to the engine. This will prevent the boat from running away under power.

WARNING! Attach the engine shut-off cord to a secure place on your clothing, or your arm or leg while operating. Do not attach the cord to clothing that could tear loose. Do not route the cord where it could become entangled, preventing it from functioning.

Avoid accidentally pulling the cord 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.

[EWM00122]

1. Cord

2. Clip


1. Cord

2. Clip


EMU26001

Engine stop button

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

19

Components

EMU26090

Main switch

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

●

“ ”

(off)

With the main switch in the “ ” (off) position, the electrical circuits are off, and the key can be removed.

●

“ ”

(on)

With the main switch in the “ ” (on) position, the electrical circuits are on, and the key cannot be removed.

●

“ ”

(start)

With the main switch in the “ ” (start) position, the starter motor turns to start the engine. When the key is released, it returns automatically to the “ ” (on) position.

set according to operator preference. An adjusting screw or bolt is located on the clamp bracket, on the right (starboard) side of the through tube end.

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.

ZMU03245

EMU26130

Steering friction adjuster

A friction device provides adjustable resistance to the steering mechanism, and can be

EMU26143

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, and 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.

For instructions on using the power trim and tilt switch, see pages 47 and 49.

20

Components distract the operator, increasing the risk of collision with another boat or an obstacle.

UP

DOWN

ZMU03096

EMU26153

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, and 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.

For instructions on using the power trim and tilt switch, see page 49.

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

EMU26244

Trim tab with anode

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.

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.

If the boat tends to veer to the left (port side), turn the trim tab rear end to the port side “A” in the figure. If the boat tends to veer to the right (starboard side), turn the trim tab end to the starboard side “B” in the figure.

ECM00840

NOTICE

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.

21

Components

A

1

B

2

ZMU03097

ZMU02528

1. Trim tab

2. Bolt

Bolt tightening torque:

36.0 Nm (3.6 kgf-m, 26 ft-lb)

EMU26261

Trim rod (tilt pin)

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

ECM00660

NOTICE

Do not use the tilt support lever or knob when trailering the boat. The outboard motor could shake loose from the tilt support and fall. If the motor cannot be trailered in the normal running position, use an additional support device to secure it in the tilt position.

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.

ZMU02526

EMU26341

Tilt support lever for power trim and tilt model

To keep the outboard motor in the tilted up position, lock the tilt support lever to the clamp bracket.

1. Top cowling lock lever(s)

1

ZMU03827

22

1. Top cowling lock lever(s)

1

ZMU02596

Components

23

Instruments and indicators

EMU26493

Digital tachometer

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

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

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.

1

2

3

5

6

1. Tachometer

2. Trim meter

3. Hour meter

4. Oil level indicator

5. Overheat-alert indicator

6. Set button

7. Mode button

7

4

ZMU01891

ZMU01869

EMU26651

Hour meter

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.

TIP:

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

EMU36050

Tachometer

The tachometer displays engine speed in hundreds of revolutions per minute (r/min).

For example, if the tachometer display reads

“22” then the engine speed is 2200 r/min.

EMU26621

Trim meter

This meter shows the trim angle of your outboard motor.

●

Memorize the trim angles that work best for your boat under different conditions.

Adjust the trim angle to the desired using

ZMU01870

“

To change the display format, press the

” (mode) button. The display can show total hours or trip hours, or turn off.

To reset the trip hours, simultaneously press the “ ” (set) and “ ” (mode) buttons for more than 1 second while the trip hours are displayed. This resets the trip counter to 0

(zero).

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

24


EMU26551

Oil level indicator (digital type)

This indicator shows the engine oil level. If the oil level falls below the lower limit, the alert indicator will start to blink. For further information, see page 29.

ECM00030

NOTICE

Do not operate the engine without oil. Serious engine damage will occur.

1

ZMU01868

1. Overheat-alert indicator

EMU26602

Digital speedometer

This gauge shows the boat speed and other information.

1

ZMU01867


EMU26583

Overheat-alert indicator

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

29.

ECM00052

NOTICE

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

1. Speedometer

2. Fuel gauge

3. Trip meter/clock/voltmeter

4. Alert indicator(s)

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

EMU36061

Speedometer

The speedometer displays km/h, mph, or knots, according to operator preference. Select the desired units of measurement by setting the selector switch on the back of the gauge. See the illustration for settings.

25


1. Cap

2. Selector switch (for speed unit)

3. Selector switch (for fuel sensor)

EMU26712

Fuel gauge

Eight segments indicate the fuel level. When all segments are showing, the fuel tank is full.

EMU36071

Trip meter / Clock / Voltmeter

The display shows either the trip meter, the clock, or the voltmeter.

To change the display, press the “ ”

(mode) button repeatedly until the indicator on the face of the gauge points to “ meter), “ ” (clock), or “

” (trip

” (voltmeter).

EMU26691

Trip meter

This gauge displays the distance the boat has traveled since the gauge was last reset.

The trip distance is shown in kilometers or miles depending upon the unit of measurement selected for the speedometer.

To reset the trip meter to zero, press the “ ”

(set) and “ ” (mode) buttons at the same time.

The trip distance is kept in memory by battery power. The stored data will be lost if the battery is disconnected.

ZMU01745

The fuel level reading can be inaccurate due to by the position of the sensor in the fuel tank and the attitude of the boat in the water.

Operation with bow-up trim or continuous turning can give false readings.

Do not adjust the selector switch for fuel sensor. Incorrectly setting the selector switch on the gauge will give false readings. Consult your Yamaha dealer on how to correctly set the selector switch.

NOTICE:

Running out of fuel can damage the engine.

[ECM01770]

EMU26701

Clock

To set the clock:

1.

Be sure the gauge is in the “ mode.

” (time)

2.

Press the “ ” (set) button; the hour display will begin blinking.

3.

Press the “ ” (mode) button until the desired hour is displayed.

4.

Press the “ ” (set) button again, the minute display will begin blinking.

26


5.

Press the “ ” (mode) button until the desired minute is displayed.

6.

Press the “ ” (set) button again to start the clock.

EMU26732

Low battery voltage-alert indicator

If battery voltage drops, the display will automatically turn on and blink.

Get back to the port soon if an alert device has activated. For charging the battery, consult your Yamaha dealer.

The clock operates on battery power. Disconnecting the battery will stop the clock.

Reset the clock after connecting the battery.

EMU36080

Voltmeter

The voltmeter displays the charge of the battery in volts(V).

EMU26721

Fuel level-alert indicator

If the fuel level decreases to one segment, the fuel level alert segment will blink.

Do not continue to operate the engine with full throttle if an alert device has activated.

Get back to the port within trolling engine speed.

NOTICE:

Running out of fuel can damage the engine.

[ECM01770]

1. Low battery indicator

EMU26471

Analog tachometer

This gauge shows the engine speed and has the following functions.

1

2

ZMU04577

1. Tachometer


EMU26541

Oil level indicators (three indicators)

The indicators on the gauge show the status of the oil level. For details on how to read the

1. Fuel level-alert segment

27


indicators, see page 40.

ECM00030

NOTICE

Do not operate the engine without oil. Serious engine damage will occur.

ZMU04581

1. Oil level indicators

1

ZMU04580

EMU26591

Analog speedometer

This gauge shows the boat speed in km/h and mph.

Memorize the trim angles that work best for your boat under different conditions. Adjust the trim angle to the desired setting with the power trim and tilt switch.

EMU26631

Hour meter

This gauge shows the number of hours the engine has been run.

ZMU04855

ZMU04647

EMU26611

Analog trim meter

This gauge shows the trim angle of your outboard motor.

TIP:

This gauge can be set to count the amount of time elapsed either when the main switch is on or only when the engine is running. For instructions on how to select the counting mode, consult your Yamaha dealer.

28

Engine control system

EMU26803

Alert system

ECM00091

NOTICE

Do not continue to operate the engine if a alert device has activated. Consult your

Yamaha dealer if the problem cannot be located and corrected.

EMU2681A

Overheat alert

This engine has an overheat-alert device. If the engine temperature rises too high, the alert device will activate.

●

The engine speed will automatically decrease to about 2000 r/min.

If the alert system has activated, stop the engine and check the cooling water inlets:

●

Check trim angle to be sure that the cooling water inlet is submerged.

●

Check the cooling water inlet for clogging.

ZMU04766

ZMU03026

●

The overheat-alert indicator will light or blink.

EMU26848

Oil level alert and oil filter clogging alert

Oil injection models

This engine has an oil level alert system. If the oil level falls below the lower limit, the alert system will activate.

Activation of alert device

●

Engine speed will automatically decrease to about 2000 r/min.

ZMU01757

●

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

29

Engine control system

make troubleshooting easier, check for engine overheating first, then oil level, and finally oil filter clogging.

ZMU04586

●

The oil level-alert indicator will light or blink.

1. Oil filter

1

ZMU03828

ZMU03942

●

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

If the alert system has been activated, stop the engine and check for the cause.

TIP:

The alert for oil filter clogging is similar to the alerts for low oil level and overheating. To

30

Installation

EMU26902

Installation

The information presented in this section is intended as reference only. It is not possible to provide complete instructions for every possible boat and motor combination. Proper mounting depends in part on experience and the specific boat and motor combination.

EWM01590

WARNING

●

Overpowering a boat could cause severe instability. Do not install an outboard motor with more horsepower than the maximum rating on the capacity plate of the boat. If the boat does not have a capacity plate, consult the boat

●

manufacturer.

Improper mounting of the outboard motor could result in hazardous conditions such as poor handling, loss of control, or fire hazards. For permanently mounted models, your dealer or other person experienced in proper rigging should mount the motor.

EMU33470

Mounting the outboard motor

The outboard motor should be mounted so that the boat is well balanced. Otherwise, the boat could be hard to steer. For single-engine boats, mount the outboard motor on the centerline (keel line) of the boat.

1. Center line (keel line)

1

ZMU01760

EMU26931

Mounting height (boat bottom)

The mounting height of your outboard motor affects its efficiency and reliability. If it is mounted too high, propeller ventilation may occur, which will reduce propulsion due to excessive propeller slip, and the water intakes for the cooling system may not get adequate water supply, which can cause engine overheating. If the engine is mounted too low, water resistance (drag) will increase, thereby reducing engine efficiency and performance.

Most commonly, outboard motor should be mounted so that the anti-cavitation plate is in alignment with the bottom of the boat. The optimum mounting height of the outboard motor is affected by the boat/motor combination and the desired use. Test runs at different heights can help determine the optimum mounting height. Consult your Yamaha dealer or boat manufacturer for further information on determining the proper mounting height.

31

Installation

ZMU01762

ECM01630

NOTICE

●

During water testing, check the buoyancy of the boat, at rest, with its maximum load. Check that the static water level on the exhaust housing is low enough to prevent water entry into the power head when water rises due to waves when the outboard is not running.

●

Incorrect engine height or obstructions to the smooth flow of water (such as the design or condition of the boat, or accessories such as transom ladders or depth finder transducers) can create airborne water spray while the boat is cruising. If the motor is operated continuously in the presence of airborne water spray, enough water could enter the engine through the intake opening on the cowling to cause severe engine damage. Eliminate the cause of the airborne water spray.

32

Operation

EMU36380

First-time operation

EMU27020

Breaking in engine

Your new engine requires a period of breakin to allow mating surfaces of moving parts to wear in evenly. Correct break-in will help ensure proper performance and longer engine life.

ECM00140

NOTICE

●

Failure to follow the break-in procedure could result in reduced engine life or

●

even severe engine damage.

Premix fuel must be used during breakin in addition to oil in the oil injection system.

EMU27060

Gasoline and engine oil mixing chart

(50:1)

2. : Engine oil

ECM00150

NOTICE

Be sure to mix gasoline and oil completely, otherwise the engine may be damaged.

EMU30311

Procedure for oil injection models

Run the engine under load (in gear with a propeller installed) for 10 hours as follows.

1.

First 10 minutes:

Run the engine at the lowest possible speed. A fast idle in neutral is best.

2.

Next 50 minutes:

Do not exceed half throttle (approximately 3000 r/min). Vary engine speed occasionally. If you have an easy-planing boat, accelerate at full throttle onto plane, then immediately reduce the throttle to 3000 r/min or less.

3.

Next two hours:

Accelerate at full throttle onto plane, then reduce engine speed to three-quarter throttle (approximately 4000 r/min).

Vary engine speed occasionally. Run at full throttle for one minute, then allow about 10 minutes of operation at threequarter throttle or less to let the engine cool.

4.

Remaining seven hours:

Run the engine at any speed. However, avoid operating at full throttle for more than 5 minutes at a time.

5.

After the first 10 hours:

Operate the engine normally. Use only straight gasoline in the fuel tank. The

Yamaha oil injection system provides proper lubrication for normal operation.

EMU36400

Getting to know your boat

Different boats handle differently. Operate cautiously while you learn how your boat handles under different conditions and with different trim angles (see page 47).

EMU36412

Checks before starting engine

EWM01920

WARNING

If any item in the checks before starting engine is not working properly, have it inspected and repaired before operating the outboard motor. Otherwise an acci-

33

Operation dent could occur.

ECM00120

NOTICE

Do not start the engine out of water. Overheating and serious engine damage can occur.

EMU37150

Fuel level

Be sure you have plenty of fuel for your trip.

A good rule is to use 1/3 of your fuel to get to the destination, 1/3 to return, and to keep 1/

3 as an emergency reserve. With the boat level on a trailer or in the water, turn the key to “ ”(on) and check the fuel level. For fuel filling instructions, see page 38.

EMU36431

Remove cowling

For the following checks, remove the top cowling from the engine. To remove the engine cowling, release all the lock levers and lift off the cowling.

ZMU06111

EMU36440

Fuel system

EWM00060

WARNING

Gasoline and its vapors are highly flammable and explosive. Keep away from sparks, cigarettes, flames, or other sources of ignition.

EWM00910

WARNING

Leaking fuel can result in fire or explosion.

●

Check for fuel leakage regularly.

●

If any fuel leakage is found, the fuel system must be repaired by a qualified mechanic. Improper repairs can make the outboard unsafe to operate.

EMU36450

Check for fuel leaks

●

Check under top cowling and in the boat for fuel leaks or gasoline fumes.

●

Check fuel line connections to be sure they are tight.

●

Check fuel lines for cracks, swelling, or other damage.

EMU37320

Check the fuel filter

Check that the fuel filter is clean and free of water. If any water is found in the fuel, or if a significant amount of debris is found, the fuel tank should be checked and cleaned by a

Yamaha dealer.

ZMU06087

34

Operation

ZMU06184

EMU36900

Controls

Tiller handle models:

●

Turn the tiller handle fully to the left and right to make sure operation is smooth.

●

Turn the throttle grip from the fully closed to the fully open position. Make sure that it turns smoothly and that it completely returns to the fully closed position.

●

Look for loose or damaged connections of the throttle and shift cables under the engine cowling.

Remote control models:

●

Turn the steering wheel full-right and fullleft. Make sure operation is smooth and unrestricted throughout the whole range with no binding or excessive free play.

●

Operate the throttle levers several times to make sure there is no hesitation in their travel. Operation should be smooth over the complete range of motion, and each lever should return completely to the idle position.

●

Look for loose or damaged connections of the throttle and shift cables under the engine cowling.

EMU36481

Engine shut-off cord (lanyard)

Inspect the engine shut-off cord for damage, such as cuts, breaks, and wear.

1. Cord

2. Clip


1. Cord

2. Clip


EMU27120

Oil

●

Check to be sure you have plenty of oil for your trip.

EMU27151

Engine

●

Check the engine and engine mounting.

●

Look for loose or damaged fasteners.

●

Check the propeller for damage.

●

Check for oil leaks.

EMU27171

Operation after a long period of storage

When operating the engine after a long peri-

35

Operation

od (12 months) of storage, proceed as follows:

1.

Use a 50:1 gasoline-oil mixture to start the engine.

2.

Start the engine. Leave it idling.

WARNING! Do not touch or remove electrical parts when starting or during operation. Keep hands, hair, and clothes away from the flywheel and other rotating parts while the engine is running.

[EWM00091]

3.

Watch for oil flowing through the oil feed pipes. After any air in the oil lines has been expelled, the oil injection system should supply oil normally. If no oil is flowing after 10 minutes of idling, consult your Yamaha dealer.

rectly all the way around the engine.

5.

Move the levers to lock the cowling as shown.

NOTICE:

If the cowling is not installed correctly, water spray under the cowling can damage the engine, or the cowling can blow off at high speeds.

[ECM01990]

ZMU06086

ZMU03829

ZMU06112

ECM00130

NOTICE

Be sure to take the above steps when operating the engine after a long period of storage. Otherwise engine seizure could occur.

EMU36961

Install cowling

1.

Be sure that all cowling lock levers are released.

2.

Be sure that the rubber seal is seated all the way around the engine.

3.

Place the cowling on top of the seal.

4.

Check to be sure the rubber seal fits cor-

After installing, check the fitting of the top cowling by pushing it with both hands. If the top cowling is loose, have it repaired by your

Yamaha dealer.

ZMU04678

36

Operation

EMU29158

Checking power trim and tilt system

EWM01930

WARNING

●

Never get under the lower unit while it is tilted, even when the tilt support lever is locked. Severe injury could occur if the outboard motor accidentally falls.

●

Body parts can be crushed between the motor and the clamp bracket when the

●

motor is trimmed or tilted.

Be sure no one is near the outboard motor before performing this check.

1.

Check the power trim and tilt unit for any sign of oil leaks.

2.

Operate each of the power trim and tilt switches on the remote control and engine bottom cowling to check that all switches work.

3.

Tilt the outboard motor up and check that the tilt rod and trim rods are extended completely.

2


2. Trim rods

1

ZMU03129

5.

Check that the tilt rod and trim rods are free of corrosion or other flaws.

6.

Activate the tilt-down switch until the trim rods have retracted completely into the cylinders.

3

1

ZMU03130

2

1. Tilt rod

2. Trim rods


ZMU03128

4.

Use the tilt support lever to lock the motor in the up position. Operate the tilt down switch briefly so the motor is supported by the tilt support lever.

7.

Activate the trim-up switch until the tilt rod is fully extended. Unlock the tilt support lever.

8.

Tilt the outboard motor down. Check that the tilt rod and trim rods operate smoothly.

EMU36581

Battery

Check that the battery is in good condition, and fully charged. Check that the battery connections are clean, secure and covered by insulating covers. The electrical contacts of the battery and cables must be clean and

37

Operation

properly connected or the battery will not start the engine.

Refer to the battery manufacturer’s instructions for checks for your particular battery.

EMU27234

Filling fuel and engine oil

EMU27246

Filling fuel for portable tank

EWM01830

WARNING

●

Gasoline and its vapors are highly flammable and explosive. Always refuel according to this procedure to reduce the risk of fire and explosion.

●

Gasoline is poisonous and can cause injury or death. Handle gasoline with care. Never siphon gasoline by mouth.

If you should swallow some gasoline or inhale a lot of gasoline vapor, or get some gasoline in your eyes, see your doctor immediately. If gasoline spills on your skin, wash with soap and water. If gasoline spills on your clothing, change your clothes.

1.

Stop the engine.

2.

Remove the portable tank from the boat.

3.

Be sure you are in a well-ventilated outdoor area, either securely moored or trailered.

4.

Do not smoke and keep away from sparks, flames, static electric discharge, or other sources of ignition.

5.

If you use a portable container to store and dispense fuel, use only an approved

GASOLINE container.

6.

Touch the fuel nozzle to the filler opening or funnel to help prevent electrostatic sparks.

7.

Fill the fuel tank, but do not overfill. Fuel can expand and overflow if the temperature increases.

Fuel tank capacity:

24 L (6.34 US gal, 5.28 Imp.gal)

Engine oil tank capacity:

2.8 L (2.96 US qt, 2.46 Imp.qt)

ZMU02834

8.

Tighten the filler cap securely.

9.

Wipe up any spilled gasoline immediately with dry rags. Dispose rags properly.

According to local laws or regulations.

EMU27311

Filling oil for electric start models

EWM00530

WARNING

Do not add gasoline into the oil tank. Fire or explosion could result.

This engine uses the Yamaha oil injection system, which provides superior lubrication by ensuring the proper oil ratio for all operating conditions. No fuel premixing is needed.

Simply pour gasoline into the fuel tank and oil into the oil tank. Convenient indicator segments indicate the status of the oil supply.

For details on reading the indicator segments, see page 40.

To fill the engine oil tank, proceed as follows:

1.

Turn the oil filler access cap on the top cowling counterclockwise and open it.

38

ZMU03369

2.

Open the oil tank filler cap by pulling the tab on the cap.

ZMU03370

3.

Slowly pour the engine oil into the engine oil tank.

2

1

ZMU03371

1. Oil filler access cap

2. Oil tank filler cap

4.

After filling, replace the all caps securely.

Operation

39

Operation

EMU27321

Oil level indicator operation

The various functions of the oil level system are as follows:

EMU27364

Electric start models

Oil level-alert indicator

(digital tachometer)

Oil level-alert indicator

(analog tachometer/ bottom cowling)

Green

Engine oil tank Remarks

Red

Yellow

EMU27451

Operating engine

EMU27464

Feeding fuel (portable tank)

EWM00420

WARNING

●

Before starting the engine, make sure that the boat is tightly moored and that you can steer clear of any obstructions.

Be sure there are no swimmers in the

●

water near you.

When the air vent screw is loosened, gasoline vapor will be released. Gasoline is highly flammable, and its vapors

more than 770 cm

3

(0.81 US qt,

0.68 Imp qt)

No refilling necessary.

from 770 cm

3

(0.81 US qt,

0.68 Imp qt) down to 280 cm

3

(0.30 US qt,

0.25 Imp qt)

Add oil; see page 6.

280 cm

3

(0.30 US qt,

0.25 Imp qt) or less

●

●

Buzzer sounds in remote control box and engine speed is limited to about 2000 r/min to help conserve oil.

Check oil filter for clogging.

are flammable and explosive. Refrain from smoking, and keep away from open flames and sparks while loosening the air vent screw.

●

This product emits exhaust gases which contain carbon monoxide, a colorless, odorless gas which could cause brain damage or death when inhaled.

Symptoms include nausea, dizziness, and drowsiness. Keep cockpit and cabin areas well ventilated. Avoid blocking exhaust outlets.

1.

If there is an air vent screw on the fuel

40

Operation

tank cap, loosen it 2 or 3 turns.

ZMU02295

1. Arrow

2.

If there is a fuel joint on the motor, firmly connect the fuel line to the joint. Then firmly connect the other end of the fuel line to the joint on the fuel tank.

ZMU03833

ZMU02024

3.

Squeeze the primer pump, with the arrow pointing up, until you feel it become firm. During engine operation place the tank horizontally, otherwise fuel cannot be drawn from the fuel tank.

EMU27492

Starting engine

EWM01600

WARNING

Before starting the engine, make sure that the boat is tightly moored and that you can steer clear of any obstructions.

Be sure there are no swimmers in the water near you.

EMU27595

Electric start / prime start models

EWM01840

WARNING

●

Failure to attached engine shut-off cord could result in a runaway boat if operator is ejected. Attach the engine shutoff cord to a secure place on your clothing, or your arm or leg while operating.

Do not attach the cord to clothing that could tear loose. Do not route the cord where it could become entangled, preventing it from functioning.

●


41

Operation

1.

Place the gear shift lever in neutral.

TIP:

The start-in-gear protection device prevents the engine from starting except when in neutral.

2.

Attach the engine shut-off cord to a secure place on your clothing, or your arm or leg. Then install the clip on the other end of the cord into the engine shut-off switch.

4.

Turn the main switch to “ ” (start), and hold it for a maximum of 5 seconds.

3.

Place the throttle grip in the “

(start) position. After the engine starts,

” return the throttle to the fully closed position.

5.

Immediately after the engine starts, release the main switch and allow it to return to “ ” (on).

NOTICE:

Never turn the main switch to “ ” (start) while the engine is running. Do not keep the starter motor turning for more than 5 seconds. If the starter motor is turned continuously for more than 5 seconds, the battery will be quickly discharged, thus making it impossible to start the engine. The starter can also be damaged. If the engine will not start after 5 seconds of cranking, return the main switch to

“ ” (on), wait 10 seconds, then crank the engine again.

[ECM00192]

TIP:

●

When the engine is cold, it needs to be warmed up. For further information, see

42

Operation

● page 44.

If the engine is warm and fails to start, open the throttle slightly and try to start the engine again. If the engine still fails to start, see page 69.

EMU27664

Electric start and remote control models

EWM01840

WARNING

●

Failure to attached engine shut-off cord could result in a runaway boat if operator is ejected. Attach the engine shutoff cord to a secure place on your clothing, or your arm or leg while operating.

Do not attach the cord to clothing that could tear loose. Do not route the cord where it could become entangled, pre-

●

venting it from functioning.


1.

Place the remote control lever in neutral.

cure place on your clothing, or your arm or leg. Then install the clip on the other end of the cord into the engine shut-off switch.

3.

Turn the main switch to “ ” (on).

4.

Turn the main switch to “ ” (start), and hold it for a maximum of 5 seconds.

TIP:

The start-in-gear protection device prevents the engine from starting except when in neutral.

2.

Attach the engine shut-off cord to a se-

5.

Immediately after the engine starts, release the main switch and allow it to return to “ ” (on).

NOTICE:

Never turn the main switch to “ ” (start) while the engine is running. Do not keep the starter motor turning for more than 5 seconds. If the starter motor is turned continuously for more than 5 seconds, the battery will be quickly discharged, thus making it impossible to start the engine. The starter can also be damaged. If the engine will not start after 5 seconds of cranking, return the main switch to

43

Operation

“ ” (on), wait 10 seconds, then crank the engine again.

[ECM00192]

TIP:

●

When the engine is cold, it needs to be warmed up. For further information, see

● page 44.

If the engine is warm and fails to start, open the throttle slightly and try to start the engine again. If the engine still fails to start, see page 69.

EMU36510

Checks after starting engine

EMU36520

Cooling water

Check for a steady flow of water from the cooling water pilot hole. A continuous flow of water from the pilot hole shows that the water pump is pumping water through the cooling passages. If the cooling passages are frozen, it may take a while for water to start flowing out of the pilot hole.

ECM01810

NOTICE

If water is not flowing out of the pilot hole at all times while the engine is running, overheating and serious damage could occur. Stop the engine and check whether the cooling water inlet on the lower case or the cooling water pilot hole is blocked. Consult your Yamaha dealer if the problem cannot be located and corrected.

ZMU03391

Check that no water leaks from the joints between the exhaust cover, cylinder head, and body cylinder.

EMU27670

Warming up engine

EMU27704

Electric start and prime start models

After starting the engine, allow it to idle for 3 minutes to warm up. Failure to do so will shorten engine life.

EMU36530

Checks after engine warm-up

EMU36540

Shifting

While tightly moored, and without applying throttle, confirm that the engine shifts smoothly into forward and reverse, and back to neutral.

EMU36980

Stop switches

●

Turn the main switch to “ ”, or press the engine stop button and make sure the engine stops.

●

Confirm that removing the clip from the engine shut-off switch stops the engine.

●

Confirm that the engine cannot be started with the clip removed from the engine shut-off switch.

44

Operation

EMU33492

EWM00180

WARNING

Shifting

Before shifting, make sure there are no swimmers or obstacles in the water near you.

ECM01610

NOTICE

Warm up the engine before shifting into gear. Until the engine is warm, the idle speed may be higher than normal. High idle speed can prevent you from shifting back to neutral. If this occurs, stop the engine, shift to neutral, then restart the engine and allow it to warm up.

To shift out of neutral

1.

Pull the neutral interlock trigger up (if equipped).

To shift from in gear (forward/reverse) to neutral

1.

Close the throttle so that the engine slows to idle speed.


2.

Move the remote control lever / gear shift lever firmly and crisply forward (for forward gear) or backward (for reverse gear) [about 35° (a detent can felt) for remote control models].

45

Operation

2.

After the engine is at idle speed in gear move the remote control lever / gear shift lever firmly and crisply into the neutral position.

pact the steering wheel or other parts of the boat. This could increase the risk of serious injury. It could also damage the shift mechanism.

●

Do not shift into reverse while traveling at planing speeds. Loss of control, boat swamping, or damage to the boat could occur.

The boat is not equipped with a separate braking system. Water resistance stops it after the throttle lever is moved back to idle.

The stopping distance varies depending on gross weight, water surface conditions, and wind direction.

EMU27821

Stopping engine

Before stopping the engine, first let it cool off for a few minutes at idle or low speed. Stopping the engine immediately after operating at high speed is not recommended.

EMU27845

Procedure

1.

Push and hold the engine stop button or turn the main switch to “ ” (off).

EMU31742

Stopping boat

EWM01510

WARNING

●

Do not use the reverse function to slow down or stop the boat as it could cause you to lose control, be ejected, or im-

46

Operation

ZMU02301

2.

After stopping the engine, disconnect the fuel line if there is a fuel joint on the outboard motor.

ZMU03834

3.

Tighten the air vent screw on the fuel tank cap (if equipped).

4.

Remove the key if the boat will be left unattended.

TIP:

The engine can also be stopped by pulling the cord and removing the clip from the engine shut-off switch, then turning the main switch to “ ” (off).

EMU27862

Trimming outboard motor

EWM00740

WARNING

Excessive trim for the operating conditions (either trim up or trim down) can cause boat instability and can make steering the boat more difficult. This increases the possibility of an accident. If the boat begins to feel unstable or is hard to steer, slow down and/or readjust the trim angle.

The trim angle of the outboard motor helps determine the position of the bow of the boat in the water. Correct trim angle will help improve performance and fuel economy while reducing strain on the engine. Correct trim angle depends upon the combination of boat, engine, and propeller. Correct trim is also affected by variables such as the load in the boat, sea conditions, and running speed.

47

Operation switch while the boat is moving.

Adjust the outboard motor trim angle using the power trim and tilt switch.


1

ZMU02543

1. Trim operating angle

EMU27884

Adjusting trim angle (Power trim and tilt)

EWM00753

WARNING

●

Be sure all people are clear of the outboard motor when adjusting the trim angle. Body parts can be crushed between the motor and the clamp bracket

●

when the motor is trimmed or tilted.

Use caution when trying a trim position for the first time. Increase speed gradually and watch for any signs of instability or control problems. Improper trim

●

angle can cause loss of control.

If equipped with a power trim and tilt switch located on the bottom cowling, use the switch only when the boat is at a complete stop with the engine off. Do not adjust the trim angle with this



UP

DN

1

ZMU04515

To raise the bow (trim-out), press the switch

“ ” (up).

48

Operation

To lower the bow (trim-in), press the switch

“ ” (down).

Make test runs with the trim set to different angles to find the position that works best for your boat and operating conditions.

EMU27911

Adjusting boat trim

When the boat is on plane, a bow-up attitude results in less drag, greater stability and efficiency. This is generally when the keel line of the boat is up about 3 to 5 degrees. With the bow up, the boat may have a greater tendency to steer to one side or the other. Compensate for this as you steer. The trim tab can also be adjusted to help offset this effect.

When the bow of the boat is down, it is easier to accelerate from a standing start onto plane.

Bow Down

Too much trim-in causes the boat to “plow” through the water, decreasing fuel economy and making it hard to increase speed. Operating with excessive trim-in at higher speeds also makes the boat unstable. Resistance at the bow is greatly increased, heightening the danger of “bow steering” and making operation difficult and dangerous.

Bow Up

Too much trim-out puts the bow of the boat too high in the water. Performance and economy are decreased because the hull of the boat is pushing the water and there is more air drag. Excessive trim-out can also cause the propeller to ventilate, which reduces performance further, and the boat may “porpoise” (hop in the water), which could throw the operator and passengers overboard.

TIP:

Depending on the type of boat, the outboard motor trim angle may have little effect on the trim of the boat when operating.

EMU27934

Tilting up and down

If the engine will be stopped for some time or if the boat is moored in shallows, the outboard motor should be tilted up to protect the propeller and lower casing from damage by collision with obstructions, and also to re-

49

Operation

duce salt corrosion.

EWM00221

WARNING

Be sure all people are clear of the outboard motor when tilting up and down,

Body parts can be crushed between the motor and the clamp bracket when the motor is trimmed or tilted.

EWM00250

WARNING

Leaking fuel is a fire hazard. If there is a fuel joint on the outboard motor, disconnect the fuel line or close the fuel cock if the engine will be tilted for more than a few minutes. Otherwise fuel may leak.

ECM00241

NOTICE

●

Before tilting the outboard motor, stop the engine by following the procedure on page 46. Never tilt the outboard motor while the engine is running. Severe

●

damage from overheating can result.

Do not tilt up the engine by pushing the tiller handle (if equipped) because this could break the handle.

EMU32723

Procedure for tilting up (power trim and tilt models)

1.

Place the remote control lever / gear shift lever in neutral.

2.

Press the power trim and tilt switch “ ”

(up) until the outboard motor has tilted up completely.

50

UP

Operation

and tilt switch “ ” (down) to retract the trim rods.

NOTICE:

Be sure to retract the trim rods completely during mooring. This protects the rods from marine growth and corrosion which could damage the power trim and tilt mechanism.

[ECM00251]

ZMU03837

3.

Pull the tilt support lever toward you to support the engine.

WARNING! After tilting the outboard motor, be sure to support it with the tilt support knob or tilt support lever. Otherwise the outboard motor could fall back down suddenly if oil in the power trim and tilt unit or in the power tilt unit loses pressure.

[EWM00262]

NOTICE:


For more detailed information, see page 54.

[ECM01641]

ZMU03116

EMU33120

Procedure for tilting down (power trim and tilt models)

1.

Push the power trim and tilt switch “ ”

(up) until the outboard motor is supported by the tilt rod and the tilt support lever becomes free.

2.

Release the tilt support lever.

ZMU02569

ZMU02528

4.

Models equipped with trim rods: Once the outboard motor is supported with the tilt support lever, press the power trim

3.

Push the power trim and tilt switch “ ”

(down) to lower the outboard motor to the desired position.

51

Operation

DN

UP

DN

ZMU01936

ting up for and cruising in shallow water.

Otherwise severe damage from overheating can result.

EMU32912

Procedure for power trim and tilt models

1.

Place the remote control lever / gear shift lever in neutral.

DN

ZMU03838

EMU28061

Shallow water

EMU32851

Power trim and tilt models

The outboard motor can be tilted up partially to allow operation in shallow water.

ECM00260

NOTICE

Do not tilt the outboard motor up so that the cooling water inlet on the lower unit is above the surface of the water when set-

2.

Slightly tilt the outboard motor up to the desired position using the power trim and tilt switch.

WARNING! Using the power trim and tilt switch on the bottom cowling while the boat is moving or engine is on could increase the risk of falling overboard and could distract the operator, increasing the risk of collision with another boat or an obstacle.

[EWM01850]

52

UP

ZMU03837

3.

To return the outboard motor to the normal running position, press the power trim and tilt switch and slowly tilt the outboard motor down.

EMU28194

Cruising in other conditions

Cruising in salt water

After operating in salt water, flush the cooling water passages with fresh water to prevent them from becoming clogged. Also rinse the outside of the outboard motor with fresh wa-

Operation

ter and, if possible, rinse the power head under the cowling.

Cruising in muddy, turbid, or acidic water

Yamaha strongly recommends that you use the optional chromium-plated water pump kit

(see page 12) if you use the outboard motor in acidic water or water with a lot of sediment in it, such as muddy or turbid (cloudy) water.

After operating in such water, flush the cooling passages with fresh water to prevent corrosion. Also rinse the outside of the outboard motor with fresh water.

53

Maintenance

EMU28226

Transporting and storing outboard motor

EWM00692

WARNING

●

USE CARE when transporting fuel tank, whether in a boat or car.

●

DO NOT fill fuel container to maximum capacity. Gasoline will expand considerably as it warms up and can build up pressure in the fuel container. This can cause fuel leakage and a potential fire hazard.

EWM01860

WARNING

Leaking fuel is a fire hazard. When transporting and storing the outboard motor, close the fuel cock to prevent fuel from leaking. Never get under the engine while it is tilted. Severe injury could occur if the outboard motor accidentally falls.

ECM00660

NOTICE


The outboard motor should be trailered and stored in the normal running position. If there is insufficient road clearance in this position, then trailer the outboard motor in the tilt position using a motor support device such as a transom saver bar. Consult your Yamaha dealer for further details.

ZMU03122

EMU30272

Storing outboard motor

When storing your Yamaha outboard motor for prolonged periods of time (2 months or longer), several important procedures must be performed to prevent excessive damage.

It is advisable to have your outboard motor serviced by an authorized Yamaha dealer prior to storage. However, you, the owner, with a minimum of tools, can perform the following procedures.

ECM01411

NOTICE

●

Do not place the outboard motor on its side before the cooling water has drained from it completely, otherwise water may enter the cylinder through the exhaust port and cause engine trouble.

●

Store the outboard motor in a dry, wellventilated place, not in direct sunlight.

EMU28303

Procedure

EMU28323

Flushing with the flushing attachment

Flushing with the flushing attachment

1.

Wash the outboard motor body using fresh water.

NOTICE:

Do not spray water into the air intake.

[ECM01840]

For further information, see page 56.

2.

Disconnect the fuel line from the motor

54

Maintenance

or shut off the fuel cock, if equipped.

3.

Remove the engine top cowling and silencer cover. Remove the propeller.

4.

Install the flushing attachment over the cooling water inlet.

NOTICE:

Do not run the engine without supplying it with cooling water. Either the engine water pump will be damaged or the engine will be damaged from overheating. Before starting the engine, be sure to supply water to the cooling water passages. Avoid running the outboard motor at high speed while on the flushing attachment, otherwise overheating could occur.

[ECM02000]

1. Flushing attachment

5.

Cooling system flushing is essential to prevent the cooling system from clogging up with salt, sand, or dirt. In addition, fogging/lubricating of the engine is mandatory to prevent excessive engine damage due to rust. Perform the flushing and fogging at the same time.

WARNING! Do not touch or remove electrical parts when starting or during operation. Keep hands, hair, and clothes away from the flywheel and other rotating parts while the engine is running.

[EWM00091]

6.

Run the engine at a fast idle for a few minutes in neutral position.

7.

Just prior to turning off the engine, quickly spray “Fogging Oil” alternately into each carburetor or the fogging hole of the silencer cover, if equipped. When properly done, the engine will smoke excessively and almost stall.

8.

Remove the flushing attachment.

9.

Install the silencer cover/cap of fogging hole and top cowling.

10. If the “Fogging Oil” is not available, run the engine at a fast idle until the fuel system becomes empty and the engine stops.

11. Drain the cooling water completely out of the motor. Clean the body thoroughly.

12. If the “Fogging Oil” is not available, remove the spark plug(s). Pour a teaspoonful of clean engine oil into each cylinder. Crank several times manually.

Replace the spark plug(s).

TIP:

A flushing attachment is available from your

Yamaha dealer.

EMU28411

Lubrication (oil injection models)

1.

Install the spark plug(s) and torque to proper specification. For information on spark plug installation, see page 61.

2.

Fill the oil tanks. This prevents the formation of condensation. For models with a remote oil tank, it may be necessary to manually override the control unit to completely fill the engine oil tank.

3.

Change the gear oil. For instructions, see page 65. Inspect the oil for the presence of water which indicates a leaky seal. Seal replacement should be performed by an authorized Yamaha dealer prior to use.

55

Maintenance

4.

Grease all grease fittings. For further details, see page 61.

TIP:

For long-term storage, fogging the engine with oil is recommended. Contact your

Yamaha dealer for information about fogging oil and procedures for your engine.

EMU28450

Cleaning the outboard motor

After use, wash the exterior of the outboard motor with fresh water. Flush the cooling system with fresh water.

ZMU03223

TIP:

For cooling system flushing instructions, see page 54.

EMU28460

Checking painted surface of motor

Check the motor for scratches, nicks, or flaking paint. Areas with damaged paint are more likely to corrode. If necessary, clean and paint the areas. A touch-up paint is available from your Yamaha dealer.

EMU28509

Periodic maintenance

EWM01871

WARNING

These procedures require mechanical skills, tools, and supplies. If you do not have the proper skills, tools, or supplies to perform a maintenance procedure, have a Yamaha dealer or other qualified mechanic do the work.

The procedures involve disassembling the motor and exposing dangerous parts.

To reduce the risk of injury from moving, hot, or electrical parts:

●

Turn off the engine and keep the key(s) and engine shut-off cord (lanyard) with you when you perform maintenance unless otherwise specified.

●

The power trim and tilt switches operate even when the ignition key is off.

Keep people away from the switches whenever working around the motor.

When the motor is tilted, keep away from the area under it or between it and the clamp bracket. Be sure no one is in this area before operating the power trim and tilt mechanism.

●

Allow the engine to cool before handling hot parts or fluids.

●

Always completely reassemble the motor before operation.

Maintenance, replacement, or repair of the emission control devices and systems on models affixed with an emission control label may be performed by any marine engine repair establishment or individual. All warranty repairs, however, including those to the emission control system, must be performed by an authorized Yamaha marine dealership.

EMU28511

Replacement parts

If replacement parts are necessary, use only genuine Yamaha parts or parts of equivalent design and quality. Any part of inferior quality may malfunction, and the resulting loss of control could endanger the operator and passengers. Yamaha genuine parts and accessories are available from your Yamaha dealer.

56

EMU34150

Severe operating conditions

Severe operating conditions involve one or more of the following types of operation on a regular basis:

●

Operating continuously at or near maximum engine speed (rpm) for many hours

●

Operating continuously at a low engine speed (rpm) for many hours

●

Brief periods of rapid acceleration and deceleration followed by engine shut off before the engine has reached proper operating temperature

●

Frequent quick acceleration and deceleration

●

●

Frequent shifting

Frequently starting and stopping the en-

● gine(s)

Operation that fluctuates often between light and heavy cargo loads

Outboard motors operating under any of these above conditions require more frequent maintenance. Yamaha recommends that you do this service twice as often as specified in the maintenance chart. For example, if a particular service should be done at 50 hours, do it instead at 25 hours. This will help prevent more rapid deterioration of engine components.

Maintenance

57

Maintenance

EMU34445

Maintenance chart 1

TIP:

●

Refer to the sections in this chapter for explanations of each owner-specific action.

●

The maintenance cycle on these charts assume usage of 100 hours per year and regular flushing of the cooling water passages. Maintenance frequency should be adjusted when

● operating the engine under adverse conditions such as extended trolling.

Disassembly or repairs may be necessary depending on the outcome of maintenance checks.

●

Expendable or consumable parts and lubricants will lose their effectiveness over time and through normal usage regardless of the warranty period.

●

When operating in salt water, muddy, other turbid (cloudy), acidic water, the engine should be flushed with clean water after each use.

The “ ” symbol indicates the check-ups which you may carry out yourself.

The “ ” symbol indicates work to be carried out by your Yamaha dealer.

Item Actions

Initial

20 hours

(3 months)

100 hours (1 year)

Every

300 hours (3 years)


Anode(s) (external)

Inspection or replacement as necessary

Anode(s) (cylinder head, thermostat cover)

Anodes (exhaust cover, cooling water passage cover, Rectifier Regulator cover)

Battery (electrolyte level, terminal)

Battery (electrolyte level, terminal)

Cooling water leakage


Replacement

Inspection

Fill, charging or replacing as necessary


Inspection Cowling clamp

Engine starting condition/Noise

Engine idling speed/

Noise

Fuel filter (can be disassembled)

Fuel line(High pressure)

Inspection

Inspection


Inspection

58

Maintenance

Item Actions

Fuel line(High pressure)

Fuel line(Low pressure)

Fuel line(Low pressure)

Fuel pump


Inspection



Inspection

Replacement

Fuel/oil leakage

Gear oil

Greasing points

Impeller/water pump housing

Impeller/water pump housing

Oil tank water drain

Oil injection pump/oil feed pump

Power trim & tilt unit/

Operation,noise and oil leakage

Propeller/Propeller nut/

Cotter pin

PCV (Pressure Control Valve)

Greasing


Replacement

Inspection or cleaning

Inspection or Adjustment

Inspection

Shift link/shift cable

Spark plug(s)



Inspection, adjustment or replacement as necessary



Spark plug caps/high tension cords

Water from the cooling water pilot hole

Throttle link/Throttle cable/Throttle pick-up timing

Thermostat

Inspection

Inspection, adjustment or replacement as necessary


Initial

20 hours

(3 months)


Every



59

Maintenance

Item Actions

Water inlet Inspection

Main switch/stop switch/choke switch

Wire harness connections/Wire coupler connections



(Yamaha) Meter/gauge Inspection

(Yamaha) Fuel tank

Inspection and cleaning as necessary

EMU34451

Maintenance chart 2

Item Actions

Guide exhaust/exhaust manifold


Initial

20 hours

(3 months)


Every



Every

1000 hours

60

EMU28941

Greasing

Yamaha grease A (water resistant grease)

Yamaha grease D (corrosion resistant grease; for propeller shaft)

60F, 70B

Maintenance

EMU28955

Cleaning and adjusting spark plug

The spark plug is an important engine component and is easy to inspect. The condition of the spark plug can indicate something about the condition of the engine. For example, if the center electrode porcelain is very white, this could indicate an intake air leak or carburetion problem in that cylinder. Do not attempt to diagnose any problems yourself.

Instead, take the outboard motor to a

Yamaha dealer. You should periodically remove and inspect the spark plug because heat and deposits will cause the spark plug to slowly break down and erode. If electrode

ZMU03125 erosion becomes excessive, or if carbon and other deposits are excessive, you should replace the spark plug with another of the correct type.

1.

Remove the spark plug caps from the spark plugs.

2.

Remove the spark plug. If electrode erosion becomes excessive, or if carbon and other deposits are excessive, you should replace the spark plug with another of the correct type.

WARNING!

When removing or installing a spark plug, be careful not to damage the insulator. A damaged insulator could allow external sparks, which could

61

Maintenance lead to explosion or fire.

[EWM00561]

Standard spark plug:

B8HS-10

BR8HS-10

3.

Be sure to use the specified spark plug, otherwise the engine may not operate properly. Before fitting the spark plug, measure the electrode gap with a wire thickness gauge; adjust the gap to specification if necessary.

torque-wrench.

EMU37450

Checking fuel filter

Check the fuel filter periodically. If any water or foreign matter is found in the filter, clean or replace it. For cleaning or replacement of the fuel filter, consult your Yamaha dealer.

ZMU06184

1. Spark plug gap

2. Spark plug I.D. mark (NGK)

3. Spark plug part number

Spark plug gap:

0.9–1.0 mm (0.035–0.039 in)

4.

When fitting the plug, wipe off any dirt from the threads, and then screw it in to the correct torque.

Spark plug torque:

25.0 Nm (2.55 kgf-m, 18.4 ft-lb)

TIP:

If a torque-wrench is not available when you are fitting a spark plug, a good estimate of the correct torque is 1/4 to 1/2 a turn past finger-tight. Have the spark plug adjusted to the correct torque as soon as possible with a

EMU29041

Inspecting idling speed

EWM00451

WARNING

●

Do not touch or remove electrical parts when starting or during operation.

●

Keep hands, hair, and clothes away from the flywheel and other rotating parts while the engine is running.

ECM00490

NOTICE

This procedure must be performed while the outboard motor is in the water. A flushing attachment or test tank can be used.

A diagnostic tachometer should be used for this procedure. Results may vary depending on whether testing is conducted with the flushing attachment, in a test tank, or with the outboard motor in the water.

1.

Start the engine and allow it to warm up fully in neutral until it is running smoothly.

62

Maintenance

TIP:

Correct idling speed inspection is only possible if the engine is fully warmed up. If not warmed up fully, the idle speed will measure higher than normal. If you have difficulty verifying the idle speed, or the idle speed requires adjustment, consult a Yamaha dealer or other qualified mechanic.

2.

Verify whether the idle speed is set to specification. For idle speed specifications, see page 9.

EMU29061

Checking water in engine oil tank

A translucent water drain hose is connected from the bottom of the oil tank to the filler neck. If water or foreign matter collects in this hose, consult a Yamaha dealer.

1. Drain hose

2. Filler neck side

2

1

ZMU03898

ZMU03841

EMU32111

Checking propeller

EWM01880

WARNING

You could be seriously injured if the engine accidentally starts when you are near the propeller.

●

Before inspecting, removing, or installing the propeller, place the shift control in neutral, turn the main switch to “ ”

(off) and remove the key, and remove the clip from the engine shut-off switch.

Turn off the battery cut-off switch if your boat has one.

Do not use your hand to hold the propeller when loosening or tightening the propeller nut. Put a wood block between the anti-cavitation plate and the propeller to prevent the propeller from turning.

EMU29112

Checking wiring and connectors

●

Check that each grounding wire is properly secured.

●

Check that each connector is engaged securely.

ZMU01897

Checkpoints

63

Maintenance

●

●

●

●

Check each of the propeller blades for wear, erosion from cavitation or ventilation, or other damage.

Check the propeller shaft for damage.

Check the splines for wear or damage.

Check for fish line tangled around the propeller shaft.

2. Propeller nut

3. Washer

4. Spacer

5. Propeller

6. Thrust washer

3

1

6

4

2

5

ZMU03842

●

Check the propeller shaft oil seal for damage.

EMU30661

Removing propeller

EMU29197

Spline models

1.

Straighten the cotter pin and pull it out using a pair of pliers.

2.

Remove the propeller nut, washer, and spacer (if equipped).

WARNING! Do not use your hand to hold the propeller when loosening the propeller nut.

[EWM01890]

1. Cotter pin

1. Cotter pin

2. Propeller nut

3. Washer

4. Spacer

5. Propeller

6. Thrust washer

3.

Remove the propeller, washer (if equipped), and thrust washer.

EMU30671

Installing propeller

EMU29233

Spline models

ECM00500

NOTICE

Be sure to use a new cotter pin and bend the ends over securely. Otherwise the propeller could come off during operation and be lost.

1.

Apply Yamaha marine grease or a corrosion resistant grease to the propeller shaft.

2.

Install the spacer (if equipped), thrust washer, washer (if equipped), and propeller on the propeller shaft.

NOTICE:

Be sure to install the thrust washer

64

Maintenance

3.

before installing the propeller, otherwise the lower case and propeller boss could be damaged.

[ECM01880]

Install the spacer (if equipped) and the washer. Tighten the propeller nut to the specified torque.

Propeller nut tightening torque:

35.0 Nm (3.57 kgf-m, 25.8 ft-lb)

4.

Align the propeller nut with the propeller shaft hole. Insert a new cotter pin in the hole and bend the cotter pin ends.

NO-

TICE:

Do not reuse the cotter pin installed. Otherwise the propeller can come off during operation.

[ECM01890]

occur if the outboard motor accidentally falls.

1.

Tilt the outboard motor so that the gear oil drain screw is at the lowest point possible.

2.

Place a suitable container under the gear case.

3.

Remove the gear oil drain screw and gasket.

NOTICE:

If there is an excessive quantity of metal particles on the magnetic gear oil drain screw, this can indicate lower unit problem. Consult your Yamaha dealer.

[ECM01900]

2

1

ZMU03133

1. Gear oil drain screw

2. Oil level plug

TIP:

If the propeller nut does not align with the propeller shaft hole after tightening to the specified torque, tighten the nut further to align it with the hole.

EMU29287

Changing gear oil

EWM00800

WARNING

●

Be sure the outboard motor is securely fastened to the transom or a stable stand. You could be severely injured if the outboard motor falls on you.

●

Never get under the lower unit while it is tilted, even when the tilt support lever or knob is locked. Severe injury could

TIP:

●

If a magnetic gear oil drain screw is equipped, remove all metal particles from the screw before installing it.

●

Always use new gaskets. Do not reuse the removed gaskets.

4.

Remove the oil level plug and gasket to allow the oil to drain completely.

NO-

TICE:

Inspect the used oil after it has been drained. If the oil is milky, water is getting into the gear case which can cause gear damage. Consult a

Yamaha dealer for repair of the lower unit seals.

[ECM00711]

65

Maintenance

TIP:

For disposal of used oil, consult your

Yamaha dealer.

5.

Put the outboard motor in a vertical position. Using a flexible or pressurized filling device, inject the gear oil into the gear oil drain screw hole.

Recommended gear oil:

Hypoid gear oil SAE#90

Gear oil quantity:

0.610 L (0.645 US qt, 0.537 Imp.qt)

ZMU03132

6.

Put a new gasket on the oil level plug.

When the oil begins to flow out of the oil level plug hole, insert and tighten the oil level plug.

pors are flammable and explosive.

●

If you have any question about properly doing this procedure, consult your

Yamaha dealer.

●

Keep away from sparks, cigarettes, flames, or other sources of ignition when cleaning the fuel tank.

●

Remove the fuel tank from the boat before cleaning it. Work only outdoors in an area with good ventilation.

●

Wipe up any spilled fuel immediately.

●

Reassemble the fuel tank carefully. Improper assembly can result in a fuel leak, which could result in a fire or explosion hazard.

●

Dispose of old gasoline according to local regulations.

1.

Empty the fuel tank into an approved container.

2.

Pour a small amount of suitable solvent into the tank. Install the cap and shake the tank. Drain the solvent completely.

3.

Remove the screws holding the fuel joint assembly. Pull the assembly out of the tank.

Tightening torque:

9 Nm (0.9 kgf-m, 6.6 ft-lb)

7.

Put a new gasket on the gear oil drain screw. Insert and tighten the gear oil drain screw.

Tightening torque:

9 Nm (0.9 kgf-m, 6.6 ft-lb)

EMU29302

Cleaning fuel tank

EWM00920

WARNING

Gasoline is highly flammable, and its va-

ZMU02324

4.

Clean the filter (located on the end of the suction pipe) in a suitable cleaning solvent. Allow the filter to dry.

5.

Replace the gasket with a new one. Reinstall the fuel joint assembly and tighten

66

Maintenance

the screws firmly.

EMU29312

Inspecting and replacing anode(s)

Yamaha outboard motors are protected from corrosion by sacrificial anodes. Inspect the external anodes periodically. Remove scales from the surfaces of the anodes. Consult a

Yamaha dealer for replacement of external anodes.

ECM00720

NOTICE

Do not paint anodes, as this would render them ineffective.

TIP:

Inspect ground leads attached to external anodes on equipped models. Consult a

Yamaha dealer for inspection and replacement of internal anodes attached to the power unit.

EMU29322

Checking battery (for electric start models)

EWM01900

WARNING

Battery electrolytic fluid is poisonous and caustic, and batteries generate explosive hydrogen gas. When working near the battery:

●

Wear protective eye gear and rubber gloves.

●

Do not smoke or bring any other source of ignition near the battery.

Refer to page 10 for detailed safety information about batteries.

The procedure for checking the battery varies for different batteries. This procedure contains typical checks that apply to many batteries, but you should always refer to the battery manufacturer’s instructions.

ECM01920

NOTICE

A poorly maintained battery will quickly deteriorate.

1.

Check the electrolyte level.

ZMU01901

ZMU02559

2.

Check the battery’s charge. If your boat is equipped with the digital speedometer, the voltmeter and low battery alert functions will help you monitor the battery’s charge. If the battery needs charg-

67

Maintenance

ing, consult your Yamaha dealer.

3.

Check the battery connections. They should be clean, secure, and covered by an insulating cover.

WARNING! Bad connections can produce shorting or arcing and cause an explosion.

[EWM01910]

EMU29333

Connecting the battery

EWM00570

WARNING

Mount the battery holder securely in a dry, well-ventilated, vibration-free location in the boat. Install a fully charged battery in the holder.

ECM01123

NOTICE

Reversal of the battery cables will damage the electrical parts.

1.

Make sure the main switch (on applicable models) is “ ” (off) before working on the battery.

2.

Connect the red battery cable to the

POSITIVE (+) terminal first. Then connect the black battery cable to the NEG-

ATIVE (-) terminal.

cables must be clean and properly connected, or the battery will not start the engine.

EMU29371

Disconnecting the battery

1.

Turn off the battery cut-off switch (if equipped) and main switch.

NOTICE:

If they are left on, the electrical system can be damaged.

[ECM01930]

2.

Disconnect the negative cable(s) from the negative (-) terminal.

NOTICE:

Always disconnect all negative (-) cables first to avoid a short circuit and damage to the electrical system.

[ECM01940]

3.

Disconnect the positive cable(s) and remove the battery from the boat.

4.

Clean, maintain, and store the battery according to the manufacturer’s instructions.

1. Red cable

2. Black cable

3. Battery

3.

The electrical contacts of the battery and

68

Trouble Recovery

EMU29427

Troubleshooting

A problem in the fuel, compression, or ignition systems can cause poor starting, loss of power, or other problems. This section describes basic checks and possible remedies, and covers all Yamaha outboard motors.

Therefore some items may not apply to your model.

If your outboard motor requires repair, bring it to your Yamaha dealer.

If the engine trouble-alert indicator is flashing, consult your Yamaha dealer.

A. Fill tank with clean, fresh fuel.

Q. Is fuel filter clogged?

A. Clean or replace filter.

Q. Is starting procedure incorrect?

A. See page 41.

Q. Has fuel pump malfunctioned?

A. Have serviced by a Yamaha dealer.

Q. Are spark plug(s) fouled or of incorrect type?

A. Inspect spark plug(s). Clean or replace with recommended type.

Starter will not operate.

Q. Is battery capacity weak or low?

A. Check battery condition. Use battery of recommended capacity.

Q. Are spark plug cap(s) fitted incorrectly?

A. Check and re-fit cap(s).

Q. Are battery connections loose or corroded?

A. Tighten battery cables and clean battery terminals.

Q. Is ignition wiring damaged or poorly connected?

A. Check wires for wear or breaks. Tighten all loose connections. Replace worn or broken wires.

Q. Is fuse for electric start relay or electric circuit blown?

A. Check for cause of electric overload and repair. Replace fuse with one of correct amperage.

Q. Are ignition parts faulty?


Q. Are starter components faulty?


Q. Is engine shut-off cord (lanyard) not attached?

A. Attach cord.

Q. Is shift lever in gear?

A. Shift to neutral.

Q. Are engine inner parts damaged?


Engine will not start (starter operates).

Q. Is fuel tank empty?


Engine idles irregularly or stalls.



Q. Is fuel contaminated or stale?

69


Q. Is fuel system obstructed?

A. Check for pinched or kinked fuel line or other obstructions in fuel system.

A. Return to home position.



Q. Is motor angle too high?

A. Return to normal operating position.

Q. Is carburetor clogged?




Q. Is fuel joint connection incorrect?

A. Connect correctly.

Q. Have ignition parts failed?


Q. Is throttle valve adjustment incorrect?


Q. Has alert system activated?

A. Find and correct cause of alert.

Q. Is battery cable disconnected?

A. Connect securely.

Q. Is spark plug gap incorrect?

A. Inspect and adjust as specified.

Alert buzzer sounds or indicator lights.

Q. Is cooling system clogged?

A. Check water intake for restriction.



Q. Is engine oil level low?

A. Fill oil tank with specified engine oil.

Q. Is specified engine oil not being used?

A. Check and replace oil as specified.

Q. Is heat range of spark plug incorrect?

A. Inspect spark plug and replace it with recommended type.

Q. Is thermostat faulty or clogged?


Q. Are carburetor adjustments incorrect?


Q. Is fuel pump damaged?


Q. Is air vent screw on fuel tank closed?

A. Open air vent screw.

Q. Is choke knob pulled out?


A. Check and replace oil with specified type.

Q. Is engine oil contaminated or deteriorated?

A. Replace oil with fresh, specified type.

Q. Is oil filter clogged?


Q. Has oil feed/injection pump malfunctioned?


70


Q. Is load on boat improperly distributed?

A. Distribute load to place boat on an even plane.

on gear housing?

A. Remove foreign matter and clean lower unit.

Q. Is water pump or thermostat faulty?


Q. Is fuel system obstructed?

A. Check for pinched or kinked fuel line or other obstructions in fuel system.

Q. Is there excess water in fuel filter cup?

A. Drain filter cup.



Engine power loss.

Q. Is propeller damaged?

A. Have propeller repaired or replaced.



Q. Is propeller pitch or diameter incorrect?

A. Install correct propeller to operate outboard at its recommended speed (r/min) range.

Q. Is trim angle incorrect?

A. Adjust trim angle to achieve most efficient operation.

Q. Is spark plug gap incorrect?

A. Inspect and adjust as specified.



Q. Have electrical parts failed?


Q. Is motor mounted at incorrect height on transom?

A. Have motor adjusted to proper transom height.

Q. Is specified fuel not being used?

A. Replace fuel with specified type.

Q. Has alert system activated?

A. Find and correct cause of alert.


A. Check and replace oil with specified type.

Q. Is boat bottom fouled with marine growth?

A. Clean boat bottom.

Q. Is thermostat faulty or clogged?




Q. Is air vent screw closed?

A. Open the air vent screw.

Q. Is fuel pump damaged?


Q. Are weeds or other foreign matter tangled

71


Q. Is fuel joint connection incorrect?

A. Connect correctly.

Q. Is heat range of spark plug incorrect?

A. Inspect spark plug and replace it with recommended type.

trailering. Damage could make the outboard motor unsafe to operate.

If the outboard motor hits an object in the water, follow the procedure below.

Q. Is high pressure fuel pump drive belt broken?


Q. Is engine not responding properly to shift lever position?


Engine vibrates excessively.

Q. Is propeller damaged?

A. Have propeller repaired or replaced.

Q. Is propeller shaft damaged?


Q. Are weeds or other foreign matter tangled on propeller?

A. Remove and clean propeller.

Q. Is motor mounting bolt loose?

A. Tighten bolt.

Q. Is steering pivot loose or damaged?

A. Tighten or have serviced by a Yamaha dealer.

EMU29433

Temporary action in emergency

EMU29440

Impact damage

EWM00870

WARNING

The outboard motor can be seriously damaged by a collision while operating or

1.

Stop the engine immediately.

2.

Inspect the control system and all components for damage. Also inspect the boat for damage.

3.

Whether damage is found or not, return to the nearest harbor slowly and carefully.

4.

Have a Yamaha dealer inspect the outboard motor before operating it again.

EMU29463

Replacing fuse

If the fuse has blown on an electric start model, open the fuse holder and replace the fuse with a new one of the proper amperage.

EWM00631

WARNING

Substituting an incorrect fuse or a piece of wire could allow excessive current flow. This could cause electric system damage and a fire hazard.

72


1. Fuse holder

2. Fuse (20 A)

1

2

1

Consult your Yamaha dealer if the new fuse immediately blows again.

EMU29512

Power trim and tilt will not operate

If the engine cannot be tilted up or down with the power trim and tilt because of a discharged battery or a failure with the power trim and tilt unit , the engine can be tilted manually.

1.

Loosen the manual valve screw by turning it clockwise until it stops.

1. Manual valve screw

ZMU02561

ZMU02562

2.

Put the engine in the desired position, then tighten the manual valve screw by turning it counterclockwise.

EMU29533

Starter will not operate

If the starter mechanism does not operate

(the engine cannot be cranked with the starter), the engine can be started with an emergency starter rope.

EWM01022

WARNING

●

Use this procedure only in an emergency to return to the nearest port for repairs.

●

When the emergency starter rope is used to start the engine, the start-ingear protection device does not operate. Make sure the remote control lever is in neutral. Otherwise the boat could unexpectedly start to move, which could result in an accident.

●

Attach the engine shut-off cord to a secure place on your clothing, or your arm or leg while operating the boat.

●

Do not attach the cord to clothing that could tear loose. Do not route the cord where it could become entangled, preventing it from functioning.

●


●

Make sure no one is standing behind you when pulling the starter rope. It could whip behind you and injure someone.

●

An unguarded, rotating flywheel is very dangerous. Keep loose clothing and other objects away when starting the engine. Use the emergency starter rope only as instructed. Do not touch the fly-

73

Trouble Recovery wheel or other moving parts when the engine is running. Do not install the starter mechanism or top cowling after the engine is running.

●

Do not touch the ignition coil, spark plug wire, spark plug cap, or other electrical components when starting or operating the motor. You could get an electrical shock.

EMU29574

Emergency starting engine

1.

Remove the top cowling.

2.

Disconnect the start-in-gear protection cable from the starter, if equipped.

3.

Remove the starter/flywheel cover after removing the bolt(s).

OFF ON START

ZMU02609

4.

Prepare the engine for starting. For further information, see page 41. Be sure the engine is in neutral and that the clip is attached to the engine shut-off switch.

The main switch must be “ ” (on), if equipped.

ZMU01906

5.

Insert the knotted end of the emergency starter rope into the notch in the flywheel rotor and wind the rope several turns around the flywheel clockwise.

6.

Pull the rope slowly until resistance is felt.

7.

Give a strong pull straight out to crank and start the engine. Repeat if necessary.

74


1

1

2

ZMU02614

2

ZMU03843

TIP:

When the engine does not start with this procedure, see page 75.

EMU29671

Engine fails to operate

EMU29691

Ignition system malfunction

If the battery voltage is low or in the unlikely event of an ignition system malfunction, the engine speed may become erratic or the engine may stop. In such a situation, follow the procedure below.

1.

Remove the CDI unit cover or electrical cover, if equipped.

2.

Disconnect the yellow cord (emergency circuit) of the CDI unit to return to port.

EWM00350

WARNING

When the yellow cord is disconnected, the idle and low speeds are slightly higher than normal. Use care when starting off or stopping.

ECM00380

NOTICE

Follow this procedure only in an emergency and just long enough to return to port for repairs.

1. CDI unit

2. Emergency connector

EMU29706

Cold engine fails to start

If the engine fails to start when it is cold, use the following procedure.

EWM00410

WARNING

When starting or operating the engine, do not touch the ignition coil, spark plug wire, spark plug cap, or other electrical parts carrying high voltage. Keep loose clothing and other objects away from the engine when starting it. Do not touch the flywheel or other moving parts when the engine is running.

1.

Adjust the trim angle so that the drive shaft is at right angles to the water surface or is trimmed in.

2.

On models equipped with an emergency starter valve, open it. The valve is located behind the silencer cover on the front of the engine.

75


OPEN

CLOSE

ZMU03844

3.

Squeeze the primer pump two or three times to feed fuel.

5.

Turn the main switch to “ ” (on).

OFF ON START

ZMU03144

ZMU03142

4.

Open the throttle slightly without shifting using the throttle grip, neutral throttle lever or free accelerator. It is necessary to change the throttle opening slightly depending on the engine temperature. After the engine starts, return the throttle to its original position.

N

6.

Turn the main switch to “ ” (start).

NOTICE:

Never turn the main switch to “ ” (start) while the engine is running. Do not keep the starter motor turning for more than 5 seconds. If the starter motor is turned continuously for more than 5 seconds, the battery will be quickly discharged, thus making it impossible to start the engine. The starter can also be damaged. If the engine will not start after

5 seconds of cranking, return the main switch to “ ” (on), wait 10 seconds, then crank the engine again.

[ECM00192]

ZMU03845

76

OFF ON START

ZMU05681

7.

After the engine starts, close the emergency starter valve (if used), then return the throttle to its original position.

OPEN

CLOSE

ZMU03145

TIP:

When the starter mechanism malfunctions, see page 73.

EMU33501

Treatment of submerged motor

If the outboard motor is submerged, immediately take it to a Yamaha dealer. Otherwise some corrosion may begin almost immediately.

NOTICE:

Do not attempt to run the outboard motor until it has been completely inspected.

[ECM00401]


77

YAMAHA MOTOR CO., LTD.

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April 2008–0.2

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