F8C

Table of contents

Yamaha F8C, F6A, F6B, FT8D Manual

0 (0)

F6A

F6B

F8C

FT8D

OWNER’S MANUAL

60R-F8199-71-E0

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

Important manual information

EMU25101

To the owner

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

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

The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED!

EWM00780

WARNING

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

ECM00700

CAUTION:

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

NOTE:

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

Yamaha continually seeks advancements in product design and quality. Therefore, while this manual contains the most current product information available at the time of printing, there may be minor discrepancies between

your machine and this manual. If there is any question concerning this 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. Note that if you do not follow these instructions, not only may the product break down, but the warranty will also be voided.

Some countries have laws or regulations restricting users from taking the product out of the country where it was purchased, and it may be impossible to register the product in the destination country. Additionally, the warranty may not apply in certain regions. When planning to take the product to another country, consult the dealer where the product was purchased for further information.

If the product was purchased used, please consult your closest dealer for customer reregistration, and to be eligible for the specified services.

NOTE:

The F6AMH, F6BMH, F8CMH, FT8DMH, FT8DE, FT8DEP 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.

Important manual information

EMU25140

F6A, F6B, F8C, FT8D

Any reprinting or unauthorized use without the written permission of Yamaha Motor Co., Ltd.

is expressly prohibited. Printed in France

General information ......................	1
Identification numbers record ......	1
Outboard motor serial number .......	1
Key number ....................................	1
EC label.......................................	1
Emission control information .......	2
SAV models....................................	2
Safety information .......................	2
Important labels...........................	4
Warning labels................................	4
Caution labels.................................	4
Fueling instructions .....................	5
Gasoline .........................................	5
Engine oil........................................	5
Battery requirement.....................	6
Battery specifications .....................	6
Without a rectifier or Rectifier
Regulator ....................................	6
Propeller selection.......................	6
Start-in-gear protection ...............	7
Basic components ........................	8
Main components........................	8
Fuel tank.........................................	9
Fuel joint.......................................	10
Fuel gauge ...................................	10
Fuel tank cap................................	10
Air vent screw...............................	10
Remote control .............................	10
Remote control lever ....................	10
Neutral interlock trigger ................	11
Neutral throttle lever .....................	11
Choke switch ................................	11
Tiller handle..................................	11
Gear shift lever .............................	11
Throttle grip ..................................	12
Throttle indicator...........................	12
Throttle friction adjuster................	12
Engine stop lanyard switch...........	13
Engine stop button .......................	14
Choke knob for pull type...............	14
Manual starter handle...................	14
Main switch...................................	15

Power tilt switch............................	15
Steering friction adjuster...............	15
Trim rod (tilt pin) ...........................	16
Tilt lock mechanism ......................	16
Tilt support knob ...........................	16
Tilt support bar .............................	16
Power tilt unit................................	16
Top cowling lock lever
(pull up type) .............................	17
Flushing device ............................	17
Warning indicator .........................	17
Low oil pressure warning
indicator ....................................	17
Warning system ........................	18
Low oil pressure warning..............	18
Operation .....................................	19
Installation.................................	19
Mounting the outboard motor .......	19
Clamping the outboard motor .......	20
Breaking in engine ....................	21
Procedure for 4-stroke models .....	21
Preoperation checks .................	21
Fuel ..............................................	21
Controls ........................................	21
Engine ..........................................	22
Checking the engine oil level........	22
Filling fuel..................................	22
Operating engine ......................	23
Feeding fuel (portable tank) .........	23
Starting engine .............................	24
Warming up engine...................	27
Manual start models .....................	27
Shifting ......................................	28
Forward (tiller handle and remote
control models) .........................	28
Reverse (manual tilt and hydro
tilt models).................................	29
Stopping engine ........................	30
Procedure.....................................	30
Procedure.....................................	31
Trimming outboard motor..........	31
Adjusting trim angle for manual
tilt models ..................................	32

Table of contents

Adjusting trim angle
(power tilt models).....................	32
Adjusting boat trim........................	33
Tilting up and down ...................	34
Procedure for tilting up
(manual tilt models)...................	34
Procedure for tilting up .................	35
Procedure for tilting down
(manual tilt models)...................	36
Procedure for tilting down.............	36
Cruising in shallow water ..........	37
Cruising in shallow water
(manual tilt models)...................	37
Power trim and tilt models /
power tilt models .......................	38
Cruising in other conditions .......	39
Maintenance.................................	40
Specifications ............................	40
Transporting and storing
outboard motor.......................	42
Clamp screw mounting models ....	42
Storing outboard motor.................	42
Procedure.....................................	43
Lubrication
(except oil injection models)......	44
Battery care ..................................	44
Flushing power unit ......................	45
Cleaning the outboard motor........	45
Checking painted surface of
motor.........................................	46
Periodic maintenance................	46
Replacement parts .......................	46
Maintenance chart........................	47
Maintenance chart (additional) .....	48
Greasing.......................................	49
Cleaning and adjusting
spark plug .................................	50
Checking fuel system ...................	50
Checking fuel filter........................	51
Inspecting idling speed.................	51
Changing engine oil......................	52
Checking wiring and
connectors ................................	53

Exhaust leakage ...........................	53
Water leakage ..............................	54
Engine oil leakage ........................	54
Checking power trim and tilt /
power tilt system .......................	54
Checking propeller .......................	54
Removing the propeller ................	55
Installing the Propeller ..................	56
Changing gear oil .........................	56
Cleaning fuel tank.........................	57
Inspecting and replacing
anode(s) ....................................	58
Checking battery
(for electric start models) ..........	58
Connecting the battery .................	59
Disconnecting the battery .............	60
Checking top cowling ...................	60
Coating the boat bottom ...............	60
Trouble Recovery........................	61
Troubleshooting ........................	61
Temporary action in
emergency .............................	64
Impact damage.............................	64
Replacing fuse..............................	64
Power trim and tilt /
power tilt will not operate ..........	65
Starter will not operate .................	65
Emergency starting engine...........	66
Engine fails to operate ..............	67
Ignition system malfunction ..........	67
Treatment of submerged
motor......................................	67
Procedure.....................................	67

General information

EMU25170

Identification numbers record

EMU25182

Outboard motor serial number

The outboard motor serial number is stamped on the label attached to the port side of the clamp bracket or the upper part of the swivel bracket.

Record your outboard motor serial number in the spaces provided to assist you in ordering spare parts from your Yamaha dealer or for reference in case your outboard motor is stolen.

1. Outboard motor serial number location

EMU25190

Key number

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

1. Key number

EMU25202

EC label

Engines affixed with this label conform to certain portions of the European Parliament directive relating to machinery. Refer to the label and the EC Declaration of Conformity for more details.

General information

Approval label of emission control certificate

1. EC label location

Fuel requirement label

1. EC label location

EMU25371

ZMU01696

EMU25221

Emission control information

EMU25351

SAV models

Engines affixed with the label pictured below conform to SAV (the Swiss exhaust emission regulations for Swiss inshore waters).

Safety information

●Before mounting or operating the outboard motor, read this entire manual. Reading it should give you an understanding of the motor and its operation.

●Before operating the boat, read any owner’s or operator’s manuals supplied with it and all labels. Be sure you understand each item before operating.

●Do not overpower the boat with this outboard motor. Overpowering the boat could result in loss of control. The rated power of the outboard should be equal to or less than the rated horsepower capacity of the boat. If the rated horsepower capacity of the boat is unknown, consult the dealer or boat manufacturer.

General information

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

●Incorrect propeller selection and incorrect use may not only cause engine damage, but also adversely affect fuel consumption. Consult your dealer for correct use.

●Never operate after drinking alcohol or taking drugs. About 50% of all boating fatalities involve intoxication.

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

●Gasoline is highly flammable, and its vapors are flammable and explosive. Handle and store gasoline carefully. Make sure there are no gas fumes or leaking fuel before starting the engine.

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

●Check throttle, shift, and steering for proper operation before starting the engine.

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

●Know the marine laws and regulations where you will be boating - and obey them.

●Stay informed about the weather. Check weather forecasts before boating. Avoid boating in hazardous weather.

●Tell someone where you are going: leave a Float Plan with a responsible person. Be sure to cancel the Float Plan when you return.

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

●Always watch carefully for swimmers during the engine operation.

●Stay away from swimming areas.

●When a swimmer is in the water near you shift into neutral and shut off the engine.

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

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

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

General information

EMU25381

Important labels

EMU25395

Warning labels

EMU25401

Label

EWM01260

WARNING

●Be sure shift control is in neutral before starting engine. (except 2HP)

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

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

EMU25431

Label

EWM01300

WARNING

●This engine is equipped with a neutral starting device.

●The engine will not start unless the shift control is in neutral position.

EMU25465

Caution labels

EMU25472

Label

ECM01190

CAUTION:

Transport and store the engine only as shown. Otherwise, engine damage could result from Leaking oil.

General information

EMU25540

Fueling instructions

EWM00010

WARNING

GASOLINE AND ITS VAPORS ARE HIGHLY FLAMMABLE AND EXPLOSIVE!

●Do not smoke when refueling, and keep away from sparks, flames, or other sources of ignition.

●Stop engine before refueling.

●Refuel in a well-ventilated area. Refuel portable fuel tanks off the boat.

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

●Do not overfill the fuel tank.

●Tighten the filler cap securely after refueling.

●If you should swallow some gasoline, inhale a lot of gasoline vapor, or get gasoline in your eyes, get immediate medical attention.

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

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

ECM00010

CAUTION:

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

EMU25580

Gasoline

Recommended gasoline:

Regular unleaded gasoline with a minimum octane rating of 90 (Research Octane Number).

If knocking or pinging occurs, use a different brand of gasoline or premium unleaded fuel.

EMU25683

Engine oil

Recommended engine oil:

4-stroke motor oil with a combination of the following SAE and API oil classifications

Engine oil type SAE: 10W-30 or 10W-40 Engine oil grade API:

SE, SF, SG, SH, SJ, SL

Engine oil quantity (excluding oil filter): 0.8 L (0.85 US qt) (0.70 Imp.qt)

NOTE:

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

ECM01050

CAUTION:

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

General information

ZMU01710

EMU25690

Battery requirement

ECM01060

CAUTION:

Do not use a battery that does not meet the specified capacity. If a battery which does not meet specifications is used, the electric system could perform poorly or be overloaded, causing electric system damage.

For electric start models, choose a battery which meets the following specifications.

EMU25720

Battery specifications

Minimum cold cranking amps (CCA/EN): FT8DE 347.0 A

FT8DEP 347.0 A

Minimum rated capacity (20HR/IEC): FT8DE 40.0 Ah

FT8DEP 40.0 Ah

EMU25730

Without a rectifier or Rectifier Regulator

ECM01090

CAUTION:

A battery cannot be connected to models that do not have a rectifier or Rectifier Regulator.

If you wish to use a battery with the models without a rectifier or Rectifier Regulator, install an optional Rectifier Regulator.

Using a maintenance-free battery with the above models can shorten the life of the battery significantly.

Install an optional Rectifier Regulator or use accessories rated to withstand 18 volts or higher with the above models. Consult your Yamaha dealer for details on installing an optional Rectifier Regulator.

EMU25742

Propeller selection

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

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

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

General information

x- 1 2 3

EMU25760

Start-in-gear protection

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

ZMU04606

1. Propeller diameter in inches

2.Propeller pitch in inches

3.Type of propeller (propeller mark)

1 2 3

ZMU01713

1. Start-in-gear protection label

ZMU04604

1.Propeller diameter in inches

2.Propeller pitch in inches

3.Type of propeller (propeller mark)

NOTE:

Select a propeller which will allow the engine to reach the middle or upper half of the operating range at full throttle with the maximum boat load. If operating conditions such as light boat loads then allow the engine r/min to rise above the maximum recommended range, reduce the throttle setting to maintain the engine in the proper operating range.

For instructions on propeller removal and installation, see page 54.

Basic components

EMU25795

Main components

NOTE:

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

F6, F8

1.	Top cowling	16.Gear shift lever
2.	Top cowling lock lever	17.Flushing device
3.	Anti-cavitation plate	18.Choke knob
4.	Propeller*	19.Fuel tank

5.Cooling water inlet

6.Drain screw

7.Trim rod

8.Clamp bracket

9.Manual starter handle 10.Warning indicator

11.Engine stop button/Engine stop lanyard switch

12.Tiller handle 13.Tilt lock lever 14.Clamp screw 15.Rope attachment

Basic components

FT8

1.Top cowling

2.Top cowling lock lever

3.Anti-cavitation plate

4.Propeller

5.Cooling water inlet

6.Drain screw

7.Trim rod

8.Clamp bracket

9.Manual starter handle* 10.Warning indicator

11.Engine stop button/Engine stop lanyard switch*

12.Gear shift lever* 13.Tiller handle* 14.Tilt lock lever* 15.Clamp screw 16.Rope attachment 17.Flushing device 18.Choke knob

19.Remote control box (side mount type)* 20.Fuel tank

EMU25802

Fuel tank

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

EWM00020

WARNING

The fuel tank supplied with this engine is its dedicated fuel reservoir and must not be used as a fuel storage container. Commercial users should conform to relevant licensing or approval authority regulations.

Basic components

ZMU01992

1.Air vent screw

2.Fuel gauge

3.Fuel joint

4.Fuel tank cap

EMU25830

Fuel joint

This joint is used to connect the fuel line.

EMU25841

Fuel gauge

This gauge is located on either the fuel tank cap or on the fuel joint base. It shows the approximate amount of fuel remaining in the tank.

EMU25850

Fuel tank cap

This cap seals the fuel tank. When removed, the tank can be filled with fuel. To remove the cap, turn it counterclockwise.

EMU25860

Air vent screw

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

EMU26180

Remote control

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

1.Power tilt switch

2.Remote control lever

3.Neutral interlock trigger

4.Neutral throttle lever

5.Main switch / choke switch

6.Engine stop lanyard switch

7.Throttle friction adjuster

EMU26190

Remote control lever

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

1.Neutral “”

2.Forward “”

3.Reverse “”

4.Shift

5.Fully closed

6.Throttle

7.Fully open

Basic components

EMU26201

Neutral interlock trigger

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

EMU26221

Choke switch

To activate the choke system, press in the main switch while the key is turned to the “” (on) or “” (start) position. The choke system will then supply the rich fuel mixture required to start the engine. When the key is released, the choke will switch off automatically.

1. Neutral interlock trigger

EMU26211

Neutral throttle lever

To open the throttle without shifting into either forward or reverse, put the remote control lever in the neutral position and lift the neutral throttle lever.

NOTE:

The neutral throttle lever will operate only 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.

EMU25911

Tiller handle

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

1.Fully open

2.Fully closed

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.

Basic components

EMU25961

Throttle indicator

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

1.Forward “”

2.Neutral “”

3.Reverse “”

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

EMU25970

Throttle friction adjuster

A friction device provides adjustable resistance to movement of the throttle grip or the remote control lever, and can be set according to operator preference.

To increase resistance, turn the adjuster clockwise. To decrease resistance, turn the adjuster counterclockwise.

EWM00030

WARNING

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

Basic components

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

EMU25990

Engine stop lanyard switch

The lock plate must be attached to the engine stop switch for the engine to run. The lanyard should be attached to a secure place on the operator’s clothing, or arm or leg. Should the operator fall overboard or leave the helm, the

lanyard will pull out the lock plate, stopping ignition to the engine. This will prevent the boat from running away under power.

EWM00120

WARNING

●Attach the engine stop switch lanyard to a secure place on your clothing, or your arm or leg while operating.

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

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

NOTE:

The engine cannot be started with the lock plate removed.

1.Lanyard

2.Lock plate

Basic components

1.Lanyard

2.Lock plate

1.Lanyard

2.Lock plate

EMU26001

Engine stop button

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

EMU26011

Choke knob for pull type

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

EMU26070

Manual starter handle

To start the engine, first gently pull the handle out until resistance is felt. From that position, then pull the handle straight out quickly to crank the engine.

Basic 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) po-

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

EMU26102

Power tilt switch

The power tilt system adjusts the outboard motor angle in relation to the transom. Pushing the switch “” (up) tilts the outboard motor up. Pressing the switch “” (down) tilts the outboard motor down. When the switch is released, the outboard motor will stop in its current position.

NOTE:

For instructions on using the power tilt switch, see pages 31 and 34.

EMU26122

Steering friction adjuster

A friction device provides adjustable resistance to the steering mechanism, and can be set according to operator preference. An adjusting screw or bolt is located on the swivel bracket.

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.

Basic components

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.

EMU26330

Tilt support bar

The tilt support bar keeps the outboard motor in the tilted up position.

EMU30530

Tilt lock mechanism

The tilt lock mechanism is used to prevent the outboard motor from lifting out of the water when in reverse gear.

1. Tilt lock lever

To lock it, set the tilt lock lever in the lock position. To release, push the tilt lock lever in the release position.

EMU26320

Tilt support knob

To keep the outboard motor in the tilted up position, push the tilt support knob under the swivel bracket.

EMU26360

Power tilt unit

This unit tilts the outboard motor up and down and is controlled with the power tilt switch.

ECM00630

CAUTION:

Do not step on or exert pressure on the power tilt motor. The power tilt unit could be damaged as a result.

Basic components

1.Power tilt unit

2.Power tilt motor

EMU26382

Top cowling lock lever (pull up type)

To remove the engine top cowling, pull up 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 by moving the lever(s) downward.

EMU26460

Flushing device

This device is used to clean the cooling water passages of the motor using a garden hose and tap water.

NOTE:

For details on usage, see page 45.

1. Flushing device

EMU26300

Warning indicator

If the engine develops a condition which is cause for warning, the indicator lights up. For details on how to read the warning indicator, see page 18.

1. Warning indicator

EMU26501

Low oil pressure warning indicator

If oil pressure drops too low, this indicator will flash. For further information, see page 18.

ECM00020

CAUTION:

●Do not continue to run the engine if the low oil pressure warning indicator is on and the engine oil level is lower. Serious engine damage will occur.

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