Yamaha F75, F90 Owner's Manual
OWNER’S MANUAL
F75
F90
Read this manual carefully before operating this
outboard motor.
LIT-18626-10-20
6D6-28199-3C-E0
ZMU07696
Les gaz d’échappement du moteur de ce produit
contiennent des substances chimiques connues
dans l’État de Californie pour provoquer le cancer,
des anomalies congénitales et des troubles de la
reproduction.
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
WARNING
NOTICE
TIP:
TIP:
EMU44140
To the owner
Thank you for selecting 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
A WARNING indicates a hazardous situation which, if not avoided, could result in
death or serious injury.
ECM00701
A NOTICE indicates special precautions
that must be taken to avoid damage to the
outboard motor or other property.
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 you purchased this outboard motor used,
see your Yamaha dealer to have it registered
in your name in Yamaha records.
The F75A, F90A 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.
EMU44150
F75, F90
OWNER’S MANUAL
©2013 by Yamaha Motor Co., Ltd.
1st Edition, April 2013
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 ............. 1
Carbon monoxide............................... 2
Modifications ...................................... 2
Boating safety ................................. 2
Alcohol and drugs............................... 2
Personal flotation devices (PFDs)...... 2
People in the water............................. 2
Passengers ........................................ 2
Overloading........................................ 2
Avoid collisions................................... 2
Weather.............................................. 3
Accident reporting .............................. 3
Boat education and training................ 3
Passenger training ............................. 4
Boating safety publications................. 4
Laws and regulations ......................... 4
Boating organizations...................... 4
Basic boating rules
(Rules of the road) ....................... 5
Steering and sailing rules and sound
signals............................................. 5
Rules when encountering vessels...... 5
Other special situations ...................... 6
General information ..........................9
Identification numbers record.......... 9
Outboard motor serial number ........... 9
Key number........................................ 9
Read manuals and labels.............. 10
Warning labels.................................. 10
Specifications and requirements... 13
Specifications ................................ 13
Installation requirements ............... 14
Boat horsepower rating .................... 14
Mounting motor ................................ 14
Remote control requirements........ 14
Battery requirements..................... 15
Specifications of Battery................... 15
Mounting battery............................... 15
Propeller selection ........................ 15
Start-in-gear protection ................. 15
Engine oil requirements ................ 16
Fuel requirements ......................... 16
Gasoline ........................................... 16
Gasoline Additives............................ 18
Anti-fouling paint ........................... 18
Motor disposal requirements......... 18
Emergency equipment .................. 18
Emission control information......... 19
North American models.................... 19
Star labels ........................................ 19
Components .................................... 22
Components diagram.................... 22
Fuel tank........................................... 23
Fuel joint........................................... 24
Fuel gauge ....................................... 24
Pressure relief tab ............................ 24
Fuel tank cap.................................... 24
Air vent screw................................... 24
Remote control box .......................... 24
Remote control lever ........................ 24
Neutral interlock trigger .................... 24
Neutral throttle lever......................... 25
Tiller handle...................................... 25
Gear shift lever ................................. 25
Throttle grip ...................................... 25
Throttle indicator............................... 25
Throttle friction adjuster.................... 26
Engine shut-off cord (lanyard) and
clip................................................. 26
Engine stop button ........................... 27
Main switch....................................... 27
Steering friction adjuster................... 28
Power trim and tilt switch on remote
control or tiller handle.................... 28
Power trim and tilt switch on bottom
cowling .......................................... 28
Variable trolling RPM switches......... 29
Trim tab with anode.......................... 29
Table of contents
Tilt support lever for power trim and
tilt model........................................ 30
Cowling lock lever (pull up type)....... 30
Flushing device ................................ 31
Fuel filter/Water separator................ 31
Instruments and indicators ............ 32
Digital tachometer ......................... 32
Tachometer ...................................... 32
Trim meter........................................ 32
Hour meter ....................................... 32
Low oil pressure-alert indicator ........ 33
Overheat-alert indicator.................... 33
Digital speedometer ...................... 33
Speedometer.................................... 33
Fuel gauge ....................................... 34
Trip meter / Clock / Voltmeter........... 34
Fuel level-alert indicator ................... 35
Low battery voltage-alert indicator ... 35
Command Link Multifunction
Meters ........................................ 35
Command Link Multifunction
Tachometer ................................ 35
Start-up checks ................................ 36
Low oil pressure-alert....................... 37
Overheat alert................................... 37
Water separator alert........................ 38
Engine trouble alert .......................... 38
Low battery voltage-alert.................. 38
Command Link Multifunction
Speed & Fuel Meter ................... 39
Command Link Multifunction
Speedometer.............................. 40
Command Link Multifunction Fuel
Management Meter .................... 40
Engine control system.................... 42
Alert system .................................. 42
Overheat alert................................... 42
Low oil pressure alert....................... 42
Installation ....................................... 44
Installation ..................................... 44
Mounting the outboard motor ........... 44
Operation ......................................... 46
First-time operation ....................... 46
Fill engine oil .................................... 46
Breaking in engine............................ 46
Getting to know your boat ................ 46
Checks before starting engine ...... 46
Fuel level .......................................... 46
Remove cowling ............................... 47
Fuel system ...................................... 47
Controls ............................................ 47
Engine shut-off cord (lanyard) .......... 48
Engine oil.......................................... 48
Engine .............................................. 48
Flushing device ................................ 49
Install cowling................................... 49
Power trim and tilt system ................ 50
Battery .............................................. 50
Filling fuel...................................... 50
Operating engine .......................... 52
Sending fuel (portable tank) ............. 52
Starting engine ................................. 53
Checks after starting engine ......... 56
Cooling water ................................... 56
Warming up engine....................... 56
Electric start models......................... 56
Checks after engine warm up ....... 57
Shifting ............................................. 57
Stop switches ................................... 57
Shifting .......................................... 57
Stopping boat................................ 58
Trolling .......................................... 58
Adjusting trolling speed .................... 58
Stopping engine ............................ 59
Procedure......................................... 59
Trimming outboard motor.............. 60
Adjusting trim angle
(Power trim and tilt)....................... 61
Adjusting boat trim............................ 61
Tilting up and down....................... 62
Procedure for tilting up
(power trim and tilt models)........... 63
Procedure for tilting down
(power trim and tilt models)........... 64
Table of contents
Shallow water ................................ 65
Power trim and tilt models ................ 65
Operating in other conditions ........ 65
Maintenance..................................... 67
Transporting and storing outboard
motor .......................................... 67
Storing outboard motor..................... 67
Procedure......................................... 68
Lubrication........................................ 69
Cleaning and anticorrosion
measures ...................................... 69
Flushing power unit .......................... 69
Cleaning the outboard motor............ 70
Checking painted surface of
outboard motor.............................. 70
Periodic maintenance.................... 70
Replacement parts ........................... 71
Maintenance interval guidelines....... 71
Maintenance chart 1......................... 72
Maintenance chart 2......................... 74
Greasing........................................... 75
Cleaning and adjusting spark plug... 76
Inspecting idle speed........................ 76
Changing engine oil.......................... 77
Inspecting wiring and connectors..... 79
Checking propeller ........................... 79
Removing propeller.......................... 80
Installing propeller............................ 80
Changing gear oil ............................. 81
Inspecting and replacing anode(s) ... 82
Checking battery (for electric start
models) ......................................... 82
Connecting the battery..................... 83
Disconnecting the battery................. 83
Trouble Recovery ............................ 85
Troubleshooting ............................ 85
Temporary action in emergency.... 88
Impact damage................................. 88
Replacing fuse.................................. 88
Power trim and tilt will not operate ... 89
Water separator-alert indicator
blinks while cruising...................... 89
Starter will not operate ..................... 91
Emergency starting engine............... 92
Treatment of submerged motor .... 93
Consumer information ................... 94
YAMAHA FOUR-STROKE
OUTBOARD MOTOR
THREE-YEAR LIMITED
WARRANTY .............................. 94
IMPORTANT WARRANTY
INFORMATION IF YOU USE
YOUR YAMAHA OUTSIDE THE
U.S.A. OR CANADA .................. 96
Safety information
EMU33622
Outboard motor safety
Observe these precautions at all times.
EMU36501
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.
● Stop the engine when a person is in the wa-
ter 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 accord-
ing to the procedure on page 52 to reduce the
risk of fire and explosion.
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.
1
Safety information
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.
EMU40280
Personal flotation devices (PFDs)
Have an approved 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.
EMU33731
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 stop the engine.
Stay away from swimming areas. Swimmers
can be hard to see.
The propeller can keep moving even when
the motor is in neutral. Stop the engine when
a person is in the water near you.
EMU33751
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.
EMU33761
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 manufacturer’s instructions. Overloading or incorrect weight
distribution can compromise the boats handling and lead to an accident, capsizing or
swamping.
EMU33772
Avoid collisions
Scan constantly for people, objects, and other
boats. Be alert for conditions that limit your
visibility or block your vision of others.
2
Operate defensively at safe speeds and keep
ZMU06025
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 understand 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. Re-
member, 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 boating in hazardous weather.
EMU44160
Accident reporting
Boat operators are required by law to file a
Boating Accident Report with their boating law
enforcement agency if their boat is involved in
any of the following accidents:
1. There is loss of life or probable loss of life.
Safety information
2. There is personal injury that requires
medical attention beyond first aid.
3. There is property damage to boats or other property over a certain amount.
4. There is complete loss of a boat.
Contact local law enforcement personnel if a
report is necessary.
EMU44170
Boat education and training
For U.S.A.
Operators should take a boating safety
course. This may be required in your state.
Many of the organizations listed in the next
section can provide information about courses in your area.
You may also want to consider an Internetbased program for basic boater education.
The Online Boating Safety Course provided
by the BoatU.S. Foundation, is approved by
the National Association of State Boating Law
Administrators (NASBLA) and recognized by
the United States Coast Guard. Most, but not
all, states accept this course to meet their
minimum requirements. While it cannot replace an in-depth course such as one offered
by the U.S. Coast Guard, U.S. Power Squadron, or other organization, this online course
does provide a general overview of the basics
in boating safety, requirements, navigation,
and operation. Upon successful completion of
the course, the user can download a certificate of completion immediately or, for a small
charge, request one by mail. To take this free
course, go to boatus.org.
For Canada
All operators of pleasure craft must illustrate
competency by means of a Pleasure Craft
Operators Card with the exception of Personal Water Craft used for rental purposes which
require a rental checklist be completed. Pleasure Craft Operators Cards can be obtained
following the completion of a competency
3
Safety information
course, with an on-line option. Details can be
found on Transport Canada’s website.
www.tc.gc.ca
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.
EMU33590
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. The rules
presented in the following section are condensed- and have been provided for your
convenience only.
Contact the U.S. Coast Guard, the National
Association of State Boating Law Administrators, or your local Power Squadron for a complete set of rules governing the waters in
which you will be using your boat.
EMU44180
Boating organizations
The following organizations provide boating
safety training and information about boating
safety and laws.
In the U.S.A.
United States Coast Guard
Consumer Affairs Staff (G-BC)
Office of Boating, Public, and Consumer Affairs
U.S. Coast Guard Headquarters
Washington, D.C. 20593-0001
http://www.uscgboating.org/
United States Power Squadrons
1-888-FOR-USPS (1-888-367-8777)
http://www.usps.org/
Boat Owners Association of The United
States
1-800-336-BOAT (1-800-336-2628)
http://www.boatus.com/
National Association of State Boating Law
Administrators (NASBLA)
1500 Leestown Road, Suite 330
Lexington, KY 40511 859-225-9497
http://www.nasbla.org/
National Marine Manufacturers Association (NMMA)
200 East Randolph Drive
Suite 5100
Chicago, IL 60601
http://www.nmma.org/
Marine Retailers Association of America
155 N. Michigan Ave. Chicago,
IL 60304
http://www.mraa.com/
In the Canada
National Marine Manufacturers Associa-
tion Canada
14 McEwan Drive
Suite 8
Bolton, ON
L7E 1H1
http://www.nmma.org/
4
Safety information
EMU33691
Basic boating rules (Rules of
the road)
Just as there are rules that apply when you
are driving on streets and highways, there are
waterway rules that apply when you are driving your boat. These rules are used internationally. (For U.S.A.: and are also enforced by
the United States Coast Guard and local
agencies.) You should be aware of these
rules, and follow them whenever you encounter another vessel on the water.
EMU33700
Steering and sailing rules and sound
signals
Whenever two vessels on the water meet one
another, one vessel has the right-of-way; it is
called the “stand-on” vessel. The vessel that
does not have the right-of-way is called the
“give-way” or “burdened”vessel. These rules
determine which vessel has the right-of-way,
and what each vessel should do.
Stand-on vessel
The vessel with the right-of-way has the duty
to continue its course and speed, except to
avoid an immediate collision. When you maintain your direction and speed, the other vessel
will be able to determine how best to avoid
you.
Give-way vessel
The vessel that does not have the right-ofway has the duty to take positive and timely
action to stay out of the way of the Stand-On
vessel. Normally, you should not cross in front
of the vessel with the right-of-way. You should
slow down or change directions briefly and
pass behind the other vessel. You should always move in such a way that the operator of
the other vessel can see what you are doing.
“ The general prudential rule ”
This rule is called Rule 2 in the International
Rules and says,
“ In obeying and construing these rules due
regard shall be had to all dangers of navigation and collision, and to any special circumstances, which may render a departure from
the above rules necessary in order to avoid
immediate danger.”
In other words, follow the standard rules except when a collision will occur unless both
vessels try to avoid each other. If that is the
case, both vessels become “ Give-Way ” vessels.
EMU25521
Rules when encountering vessels
There are three main situations that you may
encounter with other vessels which could lead
to a collision unless the Steering Rules are followed:
Meeting: (you are approaching another vessel head-on)
Crossing: (you are traveling across the other
vessel’s path)
Overtaking: (you are passing or being
passed by another vessel)
In the following illustration, your boat is in the
center. You should give the right-of-way to
any vessels shown in white area (you are the
Give-Way vessel). Any vessels in the shaded
area must yield to you (they are the Give-Way
vessels). Both you and the meeting vessel
must alter course to avoid each other.
5
Safety information
Meeting
If you are meeting another power vessel head
on, and are close enough to run the risk of collision, neither of you has the right-of-way Both
of you should alter course to avoid an accident. You should keep the other vessel on
your port (left) side. This rule doesn’t apply if
both of you will clear one another if you continue on your set course and speed.
Crossing
When two power driven vessels are crossing
each other’s path close enough to run the risk
of collision, the vessel which has the other on
the starboard (right) side must keep out of the
way of the other. If the other vessel is on your
right, you must keep out of its way; you are the
Give-Way vessel. If the other vessel is on
your port (left) side, remember that you
should maintain course and direction, provided the other vessel gives you the right-of-way
as it should.
Overtaking
If you are passing another vessel, you are the
“Give-Way” vessel. This means that the other
vessel is expected to maintain its course and
speed. You must stay out of its way until you
are clear of it. Likewise, if another vessel is
passing you, you should maintain your speed
and direction so that the other vessel can
steer itself around you.
EMU25531
Other special situations
There are three other rules you should be
aware of when driving your boat around other
vessels.
Narrow channels and bends
When navigating in narrow channels, you
should keep to the right when it is safe and
practical to do so. If the operator of a powerdriven vessel is preparing to go around a
bend that may obstruct the view of other water
vessels, the operator should sound a prolonged blast on the whistle (4 to 6 seconds). If
another vessel is around the bend, it too
should sound the whistle. Even if no reply is
heard, however, the vessel should still proceed around the bend with caution. If you navigate such waters with your boat, you will
need to carry a portable air horn, available
from local marine supply stores.
6
Safety information
Fishing vessel right-of-way
All vessels that are fishing with nets, lines or
trawls are considered to be “fishing vessels”
under the International Rules. Vessels with
trolling lines are not considered fishing vessels. Fishing vessels have the right-of-way regardless of position. Fishing vessels cannot,
however, impede the passage of other vessels in narrow channels.
Sailing vessel right-of-way
Sailing vessels should normally be given the
right-of-way. The exceptions to this are:
1. When the sailing vessel is overtaking the
power-driven vessel, the power-driven
vessel has the right-of-way.
2. Sailing vessels should keep clear of any
fishing vessel.
3. In a narrow channel, a sailing vessel
should not hamper the safe passage of a
power-driven vessel that can navigate
only in such a channel.
Reading buoys and other markers
The waters of the United States are marked
for safe navigation by the lateral system of
buoyage. Simply put, buoys and markers
have an arrangement of shapes, colors, numbers and lights to show which side of the buoy
a boater should pass on when navigating in a
particular direction. The markings on these
buoys are oriented from the perspective of being entered from seaward (the boater is going
towards the port). This means that red buoys
are passed on the starboard (right) side when
proceeding from open water into port, and
black buoys are to port (left) side. When navigating out of port, your position with respect to
the buoys should be reversed; red buoys
should be to port and black buoys to starboard.
Many bodies of water used by boaters are entirely within the boundaries of a particular
state. The Uniform State Waterway Marking
System has been devised for these waters.
This system uses buoys and signs with distinctive shapes and colors to show regulatory
or advisory information. These markers are
white with black letters and orange boarders.
They signify speed zones, restricted areas,
danger areas, and general information.
Remember, markings may vary by geographic location. Always consult local boating authorities before driving your boat in unfamiliar
waters.
7
Safety information
ZMU01708
8
EMU25171
1
ZMU04214
Identification numbers record
EMU25184
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. Outboard motor serial number location
General information
1. Key number
EMU25191
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.
9
General information
EMU33523
Read manuals and labels
Before operating or working on this outboard 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.
EMU33832
Warning labels
If these labels are damaged or missing, contact your Yamaha dealer for replacements.
F75, F90
10
General information
WARNING
WARNING
WARNING
1
2
3
ZMU05740
EMU33912
Contents of labels
The above warning labels mean as follows.
1
EWM01691
Emergency starting does not have startin-gear protection. Ensure shift control is
in neutral before starting engine.
2
EWM01681
● 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.
3
EWM01671
● Read Owner’s Manuals and labels.
● Wear an approved personal flotation de-
vice (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.
11
General information
ZMU05696
ZMU05664
ZMU05665
ZMU05666
EMU35132
Symbols
The following symbols mean as follows.
Notice/Warning
Read Owner’s Manual
Electrical hazard
Hazard caused by continuous rotation
12
Specifications and requirements
TIP:
EMU34521
Specifications
“(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.
EMU2821S
Dimension and weight:
Overall length:
721 mm (28.4 in)
Overall width:
479 mm (18.9 in)
Overall height L:
1582 mm (62.3 in)
Overall height X:
F90A 1709 mm (67.3 in)
Motor transom height L:
536 mm (21.1 in)
Motor transom height X:
F90A 664 mm (26.1 in)
Dry weight (AL) L:
170 kg (375 lb)
Dry weight (AL) X:
F90A 173 kg (381 lb)
Performance:
Full throttle operating range:
5000–6000 r/min
Rated power:
F75A 55.2 kW (75 HP)
F90A 66.2 kW (90 HP)
Idle speed (in neutral):
650-750 r/min
Power unit:
Type:
4-stroke DOHC L4 16valves
Total displacement:
1596 cm³ (97.4 c.i.)
Bore × stroke:
79.0 × 81.4 mm (3.11 × 3.20 in)
Ignition system:
TCI
Spark plug (NGK):
LFR5A-11
Spark plug gap:
1.0–1.1 mm (0.039–0.043 in)
Steering system:
Remote steering
Starting system:
Electric starter
Starting carburetion system:
Fuel injection
Valve clearance IN (cold engine):
0.17–0.24 mm (0.0067–0.0094 in)
Valve clearance EX (cold engine):
0.31–0.38 mm (0.0122–0.0150 in)
Cold cranking amps (CCA/SAE):
380–1150 A
Marine cranking amps (MCA/ABYC):
502–1370 A
Min. reserve capacity (RC/SAE):
124 minutes
Maximum generator output:
25 A
Lower unit:
Gear shift positions:
Forward-neutral-reverse
Gear ratio:
2.27(25/11)
Trim and tilt system:
Power trim and tilt
Propeller mark:
K
Fuel and oil:
Recommended fuel:
Regular unleaded gasoline
Min. pump octane number (PON):
86
13
Specifications and requirements
WARNING
WARNING
WARNING
Fuel tank capacity:
25 L (6.61 US gal, 5.50 Imp.gal)
Recommended engine oil:
YAMALUBE 4M FC-W or 4-stroke
outboard motor oil
Recommended engine oil grade 1:
SAE 10W-30/10W-40/5W-30
API SE/SF/SG/SH/SJ/SL
Engine oil quantity (without oil filter
replacement):
3.5 L (3.70 US qt, 3.08 Imp.qt)
Engine oil quantity (with oil filter
replacement):
3.7 L (3.91 US qt, 3.26 Imp.qt)
Lubrication system:
Wet sump
Recommended gear oil:
Yamalube Marine Gearcase Lube or
Hypoid gear oil
Recommended gear oil grade:
SAE 90 API GL-4
Gear oil quantity:
0.670 L (0.708 US qt, 0.590 Imp.qt)
Tightening torque:
Spark plug:
25 Nm (2.55 kgf-m, 18.4 ft-lb)
Propeller nut:
35 Nm (3.57 kgf-m, 25.8 ft-lb)
Engine oil drain bolt:
28 Nm (2.86 kgf-m, 20.7 ft-lb)
Engine oil filter:
18 Nm (1.84 kgf-m, 13.3 ft-lb)
EMU33554
Installation requirements
EMU33564
Boat horsepower rating
EWM01560
Overpowering a boat can cause severe instability.
Before installing the outboard motor(s), confirm that the total horsepower of your outboard motor(s) does not exceed the boats
maximum horsepower rating. See the boat’s
capacity plate or contact the manufacturer.
EMU33571
Mounting motor
EWM01570
● Improper mounting of the outboard mo-
tor could result in hazardous conditions
such as poor handling, loss of control,
or fire hazards.
● Because the motor is very heavy, spe-
cial 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
44.
EMU33581
Remote control requirements
EWM01580
● 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.
14
Specifications and requirements
NOTICE
ZMU04606
-
x
123
EMU25694
Battery requirements
EMU25714
Specifications of Battery
Use a fully charged battery that meets the following specifications. The engine cannot be
started if battery voltage is too low.
Cold cranking amps (CCA/SAE):
380–1150 A
Marine cranking amps (MCA/ABYC):
502–1370 A
Min. reserve capacity (RC/SAE):
124 minutes
ECM01061
Do not use a battery that does not meet the
specified capacity. If a battery that does
not meet specifications is used, the electric system could perform poorly or be
overloaded, causing electric system damage.
EMU36290
Mounting battery
Mount the battery holder securely in a dry,
well-ventilated, vibration-free location in the
boat. WARNING! Do not put flammable
items, or loose heavy or metal objects in
the same compartment as the battery.
Fire, explosion or sparks could result.
[EWM01820]
EMU34195
Propeller selection
Next to selecting an outboard motor, selecting
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 selected 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, select 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, select 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.
To check the propeller, see page 79.
1. Propeller diameter in inches
2. Propeller pitch in inches
3. Type of propeller (propeller mark)
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.
15
Specifications and requirements
NOTICE
ZMU06854
122˚F
50˚C
104
40
86
30
68
SAE API
SE
SF
SG
SH
SJ
SL
20
50
10
32
0
14
-10
-4
-20
10W–30
10W–40
5W–30
ZMU06855
122˚F
50˚C
104
40
86
30
68
SAE API
SH
SJ
SL
20
50
10
32
0
14
-10
-4
-20
15W–40
20W–40
20W–50
EMU41952
Engine oil requirements
Select an oil grade according to the average
temperatures in the area where the outboard
motor will be used.
Recommended engine oil:
YAMALUBE 4M FC-W or 4-stroke
outboard motor oil
Recommended engine oil grade 1:
SAE 10W-30/10W-40/5W-30
API SE/SF/SG/SH/SJ/SL
Recommended engine oil grade 2:
SAE 15W-40/20W-40/20W-50
API SH/SJ/SL
Engine oil quantity (without oil filter replacement):
3.5 L (3.70 US qt, 3.08 Imp.qt)
Engine oil quantity (with oil filter replacement):
3.7 L (3.91 US qt, 3.26 Imp.qt)
If oil grades listed under Recommended engine oil grade 1 are not available, select an alternative oil grade listed under
Recommended engine oil grade 2.
Recommended engine oil grade 1
Recommended engine oil grade 2
EMU36360
Fuel requirements
EMU41331
Gasoline
Use a good quality gasoline that meets the
minimum octane requirement. If knocking or
pinging occurs, use a different brand of gasoline or premium unleaded fuel. Yamaha recommends that you use alcohol-free gasoline
(see Gasoline with Ethanol) whenever possible.
The use of a poor quality gasoline may result
in starting and running problems. If you encounter drivability problems, which you suspect could be related to the fuel you are using,
we recommend that you switch to a recognized high quality brand of gasoline, such as
a gasoline that is advertised as Top Tier Detergent Gasoline. Failure to comply with these
recommendations may also result in unscheduled maintenance, fuel system damage, and internal engine damage.
16
Recommended fuel:
Regular unleaded gasoline
Min. pump octane number (PON):
86
ECM01981
● Do not use leaded gasoline. Leaded gas-
oline can seriously damage the engine.
Specifications and requirements
NOTICE
● 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.
Gasoline with Ethanol
Two types of gasoline are commonly available in the U.S.A. and Canada for use in automobiles and boats: conventional gasoline
without Ethanol and gasoline with Ethanol,
which is typically referred to as E10 gasoline.
According to federal regulations, E10 gasoline may contain up to 10% Ethanol.
A high quality gasoline without Ethanol is the
preferred fuel for your Yamaha outboard motor. However, if gasoline with Ethanol is the
only fuel available in your area, your Yamaha
outboard motor is calibrated to run properly
on fresh E10 gasoline that meets the minimum octane requirement specified for this
model.
ECM02401
Never use a gasoline for your outboard
motor that contains more than 10% Ethanol, such as E15 which contains 15% Ethanol or E85 which contains 85% Ethanol,
or gasoline containing any amount of
Methanol. These fuels can cause starting
and running problems, as well as serious
fuel system and internal engine damage.
Gasoline containing ethanol has several
properties that may cause boat fuel system
problems.
● Ethanol is a strong solvent (cleaning agent)
that can clean gum and varnish deposits
from a boat’s fuel system, particularly in older boats, as well as tanks and pipes used in
gasoline distribution. These released deposits contaminate the fuel and can cause
problems, such as clogged fuel filters, carburetors, or fuel injectors, which could result in engine damage.
● Ethanol may dissolve resins used in the
construction of fiberglass fuel tanks. The
dissolved resins contaminate the fuel and
can cause problems, such as clogged fuel
filters, carburetors, or fuel injectors, which
could result in engine damage.
● Ethanol is hygroscopic (has a strong attrac-
tion to water). Therefore, any water that inadvertently enters the fuel system,
including moisture that is absorbed from the
air, will mix with the ethanol in the gasoline.
If the amount of water is excessive, the ethanol and water mixture will separate from
the gasoline in a layer at the bottom of the
fuel tank. This ethanol and water mixture is
very corrosive to aluminum fuel tanks and
fuel system components.
● The usable life span of E10 gasoline may
be shorter than the normal length of off-season boat storage, causing starting and run-
ning problems related to stale fuel.
For more information on using fuel containing
ethanol, visit: http://www.yamaha-motor.com
Gasoline Filtration
Yamaha outboard motors are equipped with
internal fuel filters. However, excessive water
or debris entering your engine’s fuel system
could prematurely clog the internal filters,
causing starting and running problems, fuel
system damage, and internal engine damage.
Therefore, it is recommended that an external
10-micron water-separating fuel filter be installed on your boat and serviced frequently.
Consult your authorized Yamaha dealer for a
10-micron filter that meets your engine’s requirements.
17
Specifications and requirements
NOTICE
NOTICE
EMU41341
Gasoline Additives
Gasoline blends change to meet automobile
emission regulations and economic conditions. Additives, added by gasoline distributors, necessary for proper automobile engine
operation and durability, may not be sufficient
for typical boat applications. Intake valve and
combustion chamber deposits may accumulate in boat engines more rapidly than encountered in automotive use. In addition,
gasoline used for boating will typically age
longer between refills than gasoline used in
automobiles, resulting in stale and unusable
gasoline that may cause starting and running
problems, fuel system damage, and internal
engine damage.
Yamaha recommends the use of two Yamalube gasoline additives to reduce internal
deposits and extend the storage life of gasoline. Continuous use of Yamalube Ring Free
Fuel Additive Plus reduces harmful internal
deposits. Yamalube Fuel Stabilizer & Conditioner Plus added to fresh gasoline will help
protect the fuel system from varnishing while
helping to keep the gasoline’s octane level
from decreasing excessively during storage.
Other additives may also be available on the
market that may have varying degrees of effectiveness. Consult your Yamaha dealer
concerning what may work best for the locally
available gasoline and environmental conditions.
EMU41350
Anti-fouling paint
A clean hull is required to maintain your boat’s
performance. Boats moored in the water
should be protected from marine growth (barnacles, mussels, and marine plants). If approved by regulations for your area, the
bottom of the hull can be coated with an antifouling paint to inhibit marine growth.
Anti-fouling paints specifically formulated for
use on aluminum may be applied to the outboard motor. The original Yamaha paint surface may be scuffed lightly before applying
anti-fouling paint, but do not remove the original paint. Removal of the original paint will increase the rate of corrosion.
ECM02410
Anti-fouling paint for fiberglass and wood
may contain materials, such as copper,
graphite, and tin, that can cause corrosion
if applied to aluminum boats and outboard
motor components. Never apply these
types of paint to your outboard motor because rapid corrosion damage could occur.
Sacrificial anodes are attached to the outboard motor to provide corrosion protection
and must never be painted.
ECM02420
Painted sacrificial anodes will not provide
corrosion protection.
EMU36341
Motor disposal requirements
Never illegally discard (dump) the motor.
Yamaha recommends consulting the dealer
about discarding the motor.
EMU36352
Emergency equipment
Keep the following items onboard in case
there is trouble with the outboard 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.
18
Specifications and requirements
ZMU06895
EMISSION CONTROL INFORMATION MFI
THIS ENGINE CONFORMS TO CALIFORNIA AND U.S. EPA EXHAUST
REGULATIONS FOR SI MARINE ENGINES. REFER TO THE OWNER'S
MANUAL FOR MAINTENANCE SPECIFICATIONS AND ADJUSTMENTS.
MEETS U.S. EPA EVAP STANDARDS USING CERTIFIED COMPONENTS.
FAMILY:
DISPLACEMENT: liters
SPARK PLUG:
FUEL: GASOLINE
FELs(HC+NOx / CO)
: / g/kW-hr MAX POWER: kW
IDLE SPEED: ± rpm IN NEUTRAL
SPARK PLUG GAP (mm):
VALVE LASH (mm) IN: EX:
YAMAHA MOTOR CO.,LTD.
INFORMATION ANTIPOLLUTION MFI
CE MOTEUR EST CONFORME AUX NORMES D’ÉMISSIONS EPA DES É.-U. ET DE LA
CALIFORNIE POUR MOTEURS MARINS À ÉTINCELLE. POUR LES SPÉCIFICATIONS ET LES
RÉGLAGES À EFFECTUER, CONSULTEZ LE MANUEL DU PROPRIÉTAIRE. INSTALLÉ AVEC
LES COMPOSANTS HOMOLOGUÉS, IL SATISFAIT AUX NORMES EVAP EPA DES É.-U.
YAMAHA MOTOR CO.,LTD.
FAMILLE :
CYLINDRÉE : litre
BOUGIE :
CARBURANT : ESSENCE
FELs(HC+NOx / CO)
: / g/kW-h PUISS. MAX. : kW
RALENTI : ± tr/mm AU POINT MORT
BOUGIE-ÉCARTEMENT (mm) :
JEU DE SOUPAPES (mm) ADM: ÉCH:
1
ZMU04218
Manufactured:
ZMU04346
Consult your Yamaha dealer for details.
EMU25222
Emission control information
EMU25230
North American models
This engine conforms to U.S. Environmental
Protection Agency (EPA) regulations for marine SI engines. See the label affixed to your
engine for details.
EMU31561
Approval label of emission control certificate
This label is attached to the bottom cowling.
New Technology; (4-stroke) MFI
1. Approval label location
EMU25263
Manufactured date label
This label is attached to the clamp bracket or
the swivel bracket.
1. Manufactured date label location
EMU25274
Star labels
Your outboard motor is labeled with a California Air Resources Board (CARB) star label.
See below for a description of your particular
label.
19
Specifications and requirements
ZMU01702
ZMU01703
ZMU01704
1. Star labels location
EMU40330
One Star—Low Emission
The one-star label identifies engines that
meet the Air Resources Board’s Personal
Watercraft and Outboard marine engine 2001
exhaust emission standards. Engines meeting these standards have 75% lower emissions than conventional carbureted twostroke engines. These engines are equivalent
to the U.S. EPA’s 2006 standards for marine
engines.
EMU40340
Two Stars—Very Low Emission
The two-star label identifies engines that meet
the Air Resources Board’s Personal Watercraft and Outboard marine engine 2004 exhaust emission standards. Engines meeting
these standards have 20% lower emissions
than One Star-Low-Emission engines.
EMU40350
Three Stars—Ultra Low Emission
The three-star label identifies engines that
meet the Air Resources Board’s Personal
Watercraft and Outboard marine engine 2008
exhaust emission standards or the Sterndrive
and Inboard marine engine 2003-2008 exhaust emission standards. Engines meeting
these standards have 65% lower emissions
than One Star-Low-Emission engines.
EMU33861
Four Stars—Super Ultra Low Emission
The four-star label identifies engines that
meet the Air Resources Board’s Sterndrive
and Inboard marine engine 2009 exhaust
emission standards. Personal Watercraft and
Outboard marine engines may also comply
with these standards. Engines meeting these
standards have 90% lower emissions than
One Star-Low-Emission engines.
20
Specifications and requirements
ZMU05663
21
Components
TIP:
ZMU07541
TRIP TIME BATT
Km/h
knot
mph
km
mile
SPEED
YAMAHA
set
mode
11 12
13 14
EMU2579Y
Components diagram
* May not be exactly as shown; also may not be included as standard equipment on all models
(order from dealer).
F75, F90
1. Top cowling
2. Cowling lock lever(s)
3. Anti-cavitation plate
4. Trim tab (anode)
5. Propeller*
6. Cooling water inlet
7. Clamp bracket
8. Flushing device
9. Water separator
10.Power trim and tilt switch
11.Remote control box (side mount type)*
12.Digital speedometer*
13.Digital tachometer*
14.Fuel tank*
22
Components
WARNING
1
4
6
3
2
5
ZMU05429
1. Tachometer unit (Square type)*
2. Tachometer unit (Round type)*
3. Speedometer unit (Square type)*
4. Speed & fuel meter unit (Square type)*
5. Speed & fuel meter unit (Round type)*
6. Fuel management meter unit (Square type)*
EMU25803
Fuel tank
If your model was equipped with a portable
fuel tank, its function is as follows.
EWM00020
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.
1
4
2
5
1. Fuel joint
2. Fuel gauge
3. Pressure relief tab
4. Fuel tank cap
5. Air vent screw
3
3
ZMU07442
23
Components
EMU25830
Fuel joint
This joint is used to connect the fuel line.
EMU43120
Fuel gauge
This gauge shows the approximate amount of
fuel remaining in the fuel tank.
EMU43150
Pressure relief tab
This is attached to the filler hole of the fuel
tank.
EMU43130
Fuel tank cap
This cap seals the fuel tank. To loosen the
cap, press and hold the pressure relief tab
and turn the cap counterclockwise.
EMU43141
Air vent screw
This screw is on the fuel tank cap. When turning the air vent screw counterclockwise, it is
loosened and the pressure in the fuel tank is
released to a certain pressure. Air is allowed
to enter the fuel tank while operating the engine.
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.
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
EMU26201
Neutral interlock trigger
To shift out of neutral, first pull the neutral interlock trigger up.
1. Power trim and tilt switch
2. Remote control lever
3. Neutral interlock trigger
4. Neutral throttle lever
5. Main switch
6. Engine shut-off switch
24
1. Neutral interlock trigger
Loading...