Yamaha F40G User manual

Read this manual carefully before operating this
outboard motor.
OWNER’S MANUAL
F40D
F40G
F50F
FT50G
F60C
FT60D
F70A
6C1-28199-79-E0
6C1-9-79-1E0.book 1 ページ ２０１１年３月１７日 木曜日 午後２時５４分

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.
6C1-9-79-1E0.book 1 ページ ２０１１年３月１７日 木曜日 午後２時５４分

Important manual information
EMU25107
To the owner
Thank you for selecting a Yamaha outboard
motor. This Owner’s Manual contains infor-
mation needed for proper operation, mainte-
nance and care. A thorough understanding
of these simple instructions will help you ob-
tain 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 fol-
low this symbol to avoid possible injury or
death.
WARNING
EWM00781
A WARNING indicates a hazardous situa-
tion which, if not avoided, could result in
death or serious injury.
NOTICE
ECM00701
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 pro-
cedures easier or clearer.
Yamaha continually seeks advancements in
product design and quality. Therefore, while
this manual contains the most current prod-
uct information available at the time of print-
ing, there may be minor discrepancies
between your machine and this manual. If
there is any question concerning this manu-
al, please consult your Yamaha dealer.
To ensure long product life, Yamaha recom-
mends that you use the product and perform
the specified periodic inspections and main-
tenance by correctly following the instruc-
tions in the owner’s manual. Any damage
resulting from neglect of these instructions is
not covered by warranty.
Some countries have laws or regulations re-
stricting 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 war-
ranty may not apply in certain regions. When
planning to take the product to another coun-
try, consult the dealer where the product was
purchased for further information.
If the product was purchased used, please
consult your closest dealer for customer re-
registration, and to be eligible for the speci-
fied services.
TIP:
The F40DET, F40GET, F50FED, F50FET,
FT50GET, F60CET, FT60DET, F70AET and
the standard accessories are used as a base
for the explanations and illustrations in this
manual. Therefore some items may not ap-
ply to every model.
EMU25121
F40D, F40G, F50F, FT50G, F60C, FT60D, F70A
OWNER’S MANUAL
©2011 by Yamaha Motor Co., Ltd.
1st Edition, April 2011
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Co., Ltd.
is expressly prohibited.
Printed in Japan
6C1-9-79-1E0.book 1 ページ ２０１１年３月１７日 木曜日 午後２時５４分

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
Read manuals and labels................. 6
Warning labels ................................. 6
Specifications and
requirements.................................... 10
Specifications ................................. 10
Installation requirements ................ 13
Boat horsepower rating................... 13
Mounting motor ............................... 13
Yamaha Security System................ 13
Remote control requirements ......... 13
Battery requirements ...................... 14
Battery specifications ...................... 14
Mounting battery ............................. 14
Multiple batteries............................. 14
Propeller selection ......................... 14
Start-in-gear protection .................. 15
Engine oil requirements ................. 15
Fuel requirements .......................... 15
Gasoline .......................................... 15
Anti-fouling paint ............................ 16
Motor disposal requirements.......... 16
Emergency equipment ................... 16
Components .................................... 17
Components diagram..................... 17
Fuel tank ......................................... 19
Fuel joint.......................................... 19
Fuel gauge ...................................... 20
Fuel tank cap................................... 20
Air vent screw.................................. 20
Remote control transmitter ............. 20
Receiver ......................................... 20
Yamaha Security System lock and
unlock mode ................................. 21
Remote control box ......................... 21
Remote control lever ....................... 21
Neutral interlock trigger ................... 22
Neutral throttle lever........................ 22
Tiller handle .................................... 22
Gear shift lever ............................... 22
Throttle grip .................................... 23
Throttle indicator ............................ 23
Throttle friction adjuster................... 23
Engine shut-off cord (lanyard) and
clip................................................. 24
Engine stop button ......................... 24
Main switch ..................................... 25
Steering friction adjuster ................. 25
Power trim and tilt switch on remote
control or tiller handle.................... 26
Power trim and tilt switch on bottom
cowling .......................................... 26
Variable trolling RPM switches........ 27
Trim tab with anode......................... 27
Trim rod (tilt pin) .............................. 28
Tilt lock mechanism......................... 28
Tilt support lever for power trim and
tilt or hydro tilt model..................... 28
Cowling lock lever(s) (turn type)...... 29
Flushing device ............................... 29
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Table of contents
Fuel filter/Water separator .............. 29
Alert indicator ................................. 30
Instruments and indicators ............ 31
Indicators ....................................... 31
Low oil pressure-alert indicator ....... 31
Overheat-alert indicator .................. 31
Digital tachometer .......................... 31
Tachometer..................................... 32
Trim meter....................................... 32
Hour meter ...................................... 32
Low oil pressure-alert indicator ....... 32
Overheat-alert indicator .................. 33
Digital speedometer ....................... 33
Speedometer .................................. 33
Fuel gauge ...................................... 33
Trip meter / Clock / Voltmeter ......... 34
Fuel level-alert indicator.................. 35
Low battery voltage-alert
indicator ........................................ 35
Analog tachometer ......................... 35
Low oil pressure-alert indicator ....... 35
Overheat-alert indicator .................. 36
Analog trim meter ........................... 36
6Y8 Multifunction meters................ 36
6Y8 Multifunction tachometers ....... 36
Start-up checks ............................... 37
Yamaha Security System
information ................................... 38
Adjusting trolling speed ................... 38
Low oil pressure-alert...................... 39
Overheat alert ................................. 39
Water separator alert ...................... 40
Engine trouble alert......................... 40
Low battery voltage-alert................. 41
6Y8 Multifunction speed & fuel
meters .......................................... 41
6Y8 Multifunction speedometers .... 42
6Y8 Multifunction fuel
management meters .................... 43
Engine control system.................... 44
Alert system ................................... 44
Overheat alert ................................. 44
Low oil pressure alert...................... 45
Installation ....................................... 46
Installation ...................................... 46
Mounting the outboard motor .......... 46
Operation ......................................... 48
First-time operation ........................ 48
Fill engine oil ................................... 48
Breaking in engine .......................... 48
Getting to know your boat ............... 48
Checks before starting engine ....... 48
Fuel level......................................... 48
Remove the top cowling.................. 49
Fuel system..................................... 49
Controls........................................... 49
Engine shut-off cord (lanyard)......... 50
Engine oil ........................................ 50
Engine ............................................. 51
Flushing device ............................... 51
Install top cowling............................ 51
Power trim and tilt system ............... 52
Battery............................................. 52
Filling fuel ...................................... 53
Operating engine ........................... 54
Sending fuel (portable tank) ............ 54
Starting engine ................................ 55
Checks after starting engine .......... 58
Cooling water .................................. 58
Warming up engine........................ 58
Manual start and electric start
models .......................................... 58
Checks after engine warm up ........ 59
Shifting ............................................ 59
Stop switches .................................. 59
Shifting ........................................... 59
Stopping boat................................. 60
Trolling ........................................... 61
Adjusting trolling speed ................... 61
Stopping engine ............................. 61
Procedure........................................ 61
Trimming outboard motor............... 62
Adjusting trim angle (Power trim
and tilt) .......................................... 63
Adjusting trim angle for hydro tilt
models .......................................... 64
Adjusting boat trim .......................... 64
Tilting up and down........................ 65
Procedure for tilting up (hydro tilt
models) ......................................... 65
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Table of contents
Procedure for tilting up (power trim
and tilt models) ............................. 66
Procedure for tilting down (hydro
tilt models) .................................... 67
Procedure for tilting down (power
trim and tilt models) ...................... 68
Shallow water ................................ 69
Hydro tilt models ............................. 69
Power trim and tilt models............... 70
Cruising in other conditions............ 71
Maintenance..................................... 72
Transporting and storing outboard
motor ............................................ 72
Storing outboard motor ................... 72
Procedure ....................................... 73
Lubrication ...................................... 74
Flushing power unit......................... 75
Cleaning the outboard motor ......... 76
Checking painted surface of
outboard motor ............................. 76
Periodic maintenance..................... 76
Replacement parts.......................... 77
Severe operating conditions ........... 77
Maintenance chart 1 ....................... 78
Maintenance chart 2 ....................... 80
Greasing ......................................... 81
Cleaning and adjusting spark
plug ............................................... 82
Inspecting idle speed ...................... 83
Changing engine oil ........................ 84
Inspecting wiring and connectors.... 85
Checking propeller .......................... 86
Removing propeller......................... 86
Installing propeller........................... 87
Changing gear oil............................ 88
Cleaning fuel tank ........................... 89
Inspecting and replacing
anode(s)........................................ 89
Checking battery (for electric start
models) ......................................... 90
Connecting the battery.................... 91
Disconnecting the battery ............... 91
Storing the battery........................... 91
Trouble Recovery ............................ 93
Troubleshooting ............................. 93
Temporary action in emergency .... 96
Impact damage ............................... 96
Replacing fuse ................................ 97
Power trim and tilt will not
operate.......................................... 97
Water separator-alert indicator
blinks while cruising ...................... 98
Starter will not operate .................. 101
Emergency starting engine ........... 101
Treatment of submerged motor ... 102
6C1-9-79-1E0.book 3 ページ ２０１１年３月１７日 木曜日 午後２時５４分

1
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
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 inter-
nal rotating parts of the engine, resulting in
serious injury or death.
Keep the top cowling in place whenever pos-
sible. Do not remove or replace the cowling
with the engine running.
Only operate the engine with the cowling re-
moved according to the specific instructions
in the manual. Keep hands, feet, hair, jewel-
ry, 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 en-
gine has cooled.
EMU33650
Electric shock
Do not touch any electrical parts while start-
ing or operating the engine. They can cause
shock or electrocution.
EMU33660
Power trim and tilt
Body parts can be crushed between the mo-
tor 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 peo-
ple be away from the switches whenever
working around the motor.
Never get under the lower unit while it is tilt-
ed, even when the tilt support lever is locked.
Severe injury could occur if the outboard mo-
tor 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 at-
tach the cord to clothing that could tear
loose, or route the cord where it could be-
come entangled, preventing it from function-
ing.
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 ob-
jects forward.
EMU33810
Gasoline
Gasoline and its vapors are highly flam-
mable and explosive. Always, refuel ac-
cording to the procedure on page 54 to
reduce the risk of fire and explosion.
6C1-9-79-1E0.book 1 ページ ２０１１年３月１７日 木曜日 午後２時５４分

Safety information
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, immedi-
ately wash with soap and water. Change
clothing if gasoline spills on it.
If you swallow gasoline, inhale a lot of gaso-
line 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 con-
tain 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 mo-
tor. 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 im-
portant 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 com-
mon 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 boat-
ing conditions.
EMU33731
People in the water
Always watch carefully for people in the wa-
ter, 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 instruc-
tions for details about appropriate passenger
locations in your boat and be sure all pas-
sengers are positioned properly before ac-
celerating 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 direc-
tion. Even when people are positioned prop-
erly, alert your passengers if you must make
any unusual maneuver. Always avoid jump-
ing waves or wakes.
EMU33760
Overloading
Do not overload the boat. Consult the boat
capacity plate or boat manufacturer for max-
imum weight and number of passengers. Be
sure that weight is properly distributed ac-
cording to the boat manufacturers instruc-
tions. Overloading or incorrect weight
distribution can compromise the boats han-
dling and lead to an accident, capsizing or
6C1-9-79-1E0.book 2 ページ ２０１１年３月１７日 木曜日 午後２時５４分

Safety information
3
swamping.
EMU33772
Avoid collisions
Scan constantly for people, objects, and oth-
er boats. Be alert for conditions that limit your
visibility or block your vision of others.
Operate defensively at safe speeds and
keep a safe distance away from people, ob-
jects, 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 aggres-
sive 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.
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.
ZMU06025
6C1-9-79-1E0.book 3 ページ ２０１１年３月１７日 木曜日 午後２時５４分

4
General information
EMU25171
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 sto-
len.
EMU25191
Key number
If a main key switch is equipped with the mo-
tor, 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.
EMU37291
EC Declaration of Conformity
(DoC)
This outboard motor conforms to certain por-
tions of the European Parliament directive
relating to machinery.
Each conformed outboard motor accompa-
nied with EC DoC.EC DoC contains the fol-
lowing information;
Name of Engine Manufacture
Model name
Product code of model (Approved model
code)
Code of conformed directives
EMU25205
CE Marking
Outboard motors affixed with this “CE”mark-
ing conform with the directives of; 98/37/EC,
94/25/EC - 2003/44/EC and 2004/108/EC.
1. Outboard motor serial number location
1. Key number
6C1-9-79-1E0.book 4 ページ ２０１１年３月１７日 木曜日 午後２時５４分

General information
5
1. CE marking location
ZMU04704
1
ZMU06040
6C1-9-79-1E0.book 5 ページ ２０１１年３月１７日 木曜日 午後２時５４分

General information
6
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.
F40D, F50F, F60C, FT50G, FT60D
3
12
ZMU05712
6C1-9-79-1E0.book 6 ページ ２０１１年３月１７日 木曜日 午後２時５４分

General information
7
F40G, F70A
3
12
ZMU07077
6C1-9-79-1E0.book 7 ページ ２０１１年３月１７日 木曜日 午後２時５４分

General information
8
EMU33912
Contents of labels
The above warning labels mean as follows.
1
WARNING
EWM01691
Emergency starting does not have start-
in-gear protection. Ensure shift control is
in neutral before starting engine.
2
WARNING
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
WARNING
EWM01671
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.
ZMU05706
12
3
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General information
9
EMU33843
Symbols
The following symbols mean as follows.
Notice/Warning
Read Owner’s Manual
Hazard caused by continuous rotation
Electrical hazard
Remote control lever/gear shift lever operat-
ing direction, dual direction
Engine start/ Engine cranking
ZMU05696
ZMU05664
ZMU05665
ZMU05666
ZMU05667
ZMU05668
6C1-9-79-1E0.book 9 ページ ２０１１年３月１７日 木曜日 午後２時５４分

10
Specifications and requirements
EMU34521
Specifications
TIP:
“(AL)” stated in the specification data below
represents the numerical value for the alumi-
num propeller installed.
Likewise, “(SUS)” represents the value for
stainless steel propeller installed and “(PL)”
for plastic propeller installed.
EMU2821K
Dimension:
Overall length:
F40DET 706 mm (27.8 in)
F40GET 698 mm (27.5 in)
F50FED 706 mm (27.8 in)
F50FET 706 mm (27.8 in)
F60CET 706 mm (27.8 in)
F70AET 713 mm (28.1 in)
FT50GET 706 mm (27.8 in)
FT60DET 706 mm (27.8 in)
Overall width:
F40DET 385 mm (15.2 in)
F40GET 386 mm (15.2 in)
F50FED 385 mm (15.2 in)
F50FET 385 mm (15.2 in)
F60CET 385 mm (15.2 in)
F70AET 386 mm (15.2 in)
FT50GET 385 mm (15.2 in)
FT60DET 385 mm (15.2 in)
Overall height L:
F40DET 1414 mm (55.7 in)
F40GET 1476 mm (58.1 in)
F50FED 1414 mm (55.7 in)
F50FET 1414 mm (55.7 in)
F60CET 1414 mm (55.7 in)
F70AET 1476 mm (58.1 in)
FT50GET 1455 mm (57.3 in)
FT60DET 1455 mm (57.3 in)
Overall height X:
F70AET 1590 mm (62.6 in)
FT60DET 1569 mm (61.8 in)
Transom height L:
F40DET 527 mm (20.7 in)
F40GET 534 mm (21.0 in)
F50FED 527 mm (20.7 in)
F50FET 527 mm (20.7 in)
F60CET 527 mm (20.7 in)
F70AET 534 mm (21.0 in)
FT50GET 530 mm (20.9 in)
FT60DET 530 mm (20.9 in)
Transom height X:
F70AET 648 mm (25.5 in)
FT60DET 644 mm (25.4 in)
Weight (AL) L:
F40DET 113.0 kg (249 lb)
F40GET 117.0 kg (258 lb)
F50FED 107.0 kg (236 lb)
F50FET 113.0 kg (249 lb)
F60CET 113.0 kg (249 lb)
F70AET 119.0 kg (262 lb)
FT50GET 118.0 kg (260 lb)
FT60DET 123.0 kg (271 lb)
Weight (AL) X:
F70AET 121.0 kg (267 lb)
FT60DET 127.0 kg (280 lb)
Performance:
Full throttle operating range:
F40DET 5000–6000 r/min
F40GET 5300–6300 r/min
F50FED 5000–6000 r/min
F50FET 5000–6000 r/min
F60CET 5000–6000 r/min
F70AET 5300–6300 r/min
FT50GET 5000–6000 r/min
FT60DET 5000–6000 r/min
Maximum output:
F40DET 29.4 kW@5500 r/min
(40 HP@5500 r/min)
F40GET 29.4 kW@5800 r/min
(40 HP@5800 r/min)
F50FED 36.8 kW@5500 r/min
6C1-9-79-1E0.book 10 ページ ２０１１年３月１７日 木曜日 午後２時５４分

Specifications and requirements
11
(50 HP@5500 r/min)
F50FET 36.8 kW@5500 r/min
(50 HP@5500 r/min)
F60CET 44.1 kW@5500 r/min
(60 HP@5500 r/min)
F70AET 51.5 kW@5800 r/min
(70 HP@5800 r/min)
FT50GET 36.8 kW@5500 r/min
(50 HP@5500 r/min)
FT60DET 44.1 kW@5500 r/min
(60 HP@5500 r/min)
Idle speed (in neutral):
750 50 r/min
Engine:
Type:
4-stroke L
Displacement:
996.0 cm3
Bore stroke:
65.0 75.0 mm (2.56 2.95 in)
Ignition system:
TCI
Spark plug (NGK):
F40DET DPR6EB-9
F40GET LKR7E
F50FED DPR6EB-9
F50FET DPR6EB-9
F60CET DPR6EB-9
F70AET LKR7E
FT50GET DPR6EB-9
FT60DET DPR6EB-9
Spark plug gap:
0.8–0.9 mm (0.031–0.035 in)
Control system:
Remote control
Starting system:
Electric starter
Starting carburetion system:
Electronic fuel injection
Valve clearance (cold engine) IN:
0.15–0.25 mm (0.0059–0.0098 in)
Valve clearance (cold engine) EX:
0.25–0.35 mm (0.0098–0.0138 in)
Min. cold cranking amps (CCA/EN):
430.0 A
Min. rated capacity (20HR/IEC):
70 Ah
Maximum generator output:
F40DET 16 A
F40GET 15 A
F50FED 16 A
F50FET 16 A
F60CET 16 A
F70AET 15 A
FT50GET 16 A
FT60DET 16 A
Drive unit:
Gear positions:
Forward-neutral-reverse
Gear ratio:
F40DET 1.85(24/13)
F40GET 2.33(28/12)
F50FED 1.85(24/13)
F50FET 1.85(24/13)
F60CET 1.85(24/13)
F70AET 2.33(28/12)
FT50GET 2.33(28/12)
FT60DET 2.33(28/12)
Trim and tilt system:
F40DET Power trim and tilt
F40GET Power trim and tilt
F50FED Hydro tilt
F50FET Power trim and tilt
F60CET Power trim and tilt
F70AET Power trim and tilt
FT50GET Power trim and tilt
FT60DET Power trim and tilt
Propeller mark:
F40DET G
F50FED G
F50FET G
F60CET G
6C1-9-79-1E0.book 11 ページ ２０１１年３月１７日 木曜日 午後２時５４分

Specifications and requirements
12
F70AET K
FT50GET K
FT60DET K
Fuel and oil:
Recommended fuel:
Regular unleaded gasoline
Min. research octane:
90
Fuel tank capacity:
25 L (6.60 US gal, 5.50 Imp.gal)
Recommended engine oil:
4-stroke outboard motor oil
Recommended engine oil grade 1:
SAE 10W-30/10W-40/5W-30
API SE/SF/SG/SH/SJ/SL
Total engine oil quantity (oil pan capacity):
2.5 L (2.64 US qt, 2.20 Imp.qt)
Lubrication:
Wet sump
Recommended gear oil:
Hypoid gear oil SAE#90
Gear oil quantity:
F40DET 0.430 L
(0.455 US qt, 0.378 Imp.qt)
F40GET 0.670 L
(0.708 US qt, 0.590 Imp.qt)
F50FED 0.430 L
(0.455 US qt, 0.378 Imp.qt)
F50FET 0.430 L
(0.455 US qt, 0.378 Imp.qt)
F60CET 0.430 L
(0.455 US qt, 0.378 Imp.qt)
F70AET 0.670 L
(0.708 US qt, 0.590 Imp.qt)
FT50GET 0.670 L
(0.708 US qt, 0.590 Imp.qt)
FT60DET 0.670 L
(0.708 US qt, 0.590 Imp.qt)
Tightening torque for engine:
Spark plug:
F40DET 18.0 Nm
(1.84 kgf-m, 13.3 ft-lb)
F40GET 17.0 Nm
(1.73 kgf-m, 12.5 ft-lb)
F50FED 18.0 Nm
(1.84 kgf-m, 13.3 ft-lb)
F50FET 18.0 Nm
(1.84 kgf-m, 13.3 ft-lb)
F60CET 18.0 Nm
(1.84 kgf-m, 13.3 ft-lb)
F70AET 17.0 Nm
(1.73 kgf-m, 12.5 ft-lb)
FT50GET 18.0 Nm
(1.84 kgf-m, 13.3 ft-lb)
FT60DET 18.0 Nm
(1.84 kgf-m, 13.3 ft-lb)
Propeller nut:
F40DET 35.0 Nm
(3.57 kgf-m, 25.8 ft-lb)
F40GET 34.0 Nm
(3.47 kgf-m, 25.1 ft-lb)
F50FED 35.0 Nm
(3.57 kgf-m, 25.8 ft-lb)
F50FET 35.0 Nm
(3.57 kgf-m, 25.8 ft-lb)
F60CET 35.0 Nm
(3.57 kgf-m, 25.8 ft-lb)
F70AET 34.0 Nm
(3.47 kgf-m, 25.1 ft-lb)
FT50GET 35.0 Nm
(3.57 kgf-m, 25.8 ft-lb)
FT60DET 35.0 Nm
(3.57 kgf-m, 25.8 ft-lb)
Engine oil drain bolt:
F40DET 28.0 Nm
(2.86 kgf-m, 20.7 ft-lb)
F40GET 27.0 Nm
(2.75 kgf-m, 19.9 ft-lb)
F50FED 28.0 Nm
(2.86 kgf-m, 20.7 ft-lb)
F50FET 28.0 Nm
(2.86 kgf-m, 20.7 ft-lb)
6C1-9-79-1E0.book 12 ページ ２０１１年３月１７日 木曜日 午後２時５４分

Specifications and requirements
13
F60CET 28.0 Nm
(2.86 kgf-m, 20.7 ft-lb)
F70AET 27.0 Nm
(2.75 kgf-m, 19.9 ft-lb)
FT50GET 28.0 Nm
(2.86 kgf-m, 20.7 ft-lb)
FT60DET 28.0 Nm
(2.86 kgf-m, 20.7 ft-lb)
Engine oil filter:
18.0 Nm (1.84 kgf-m, 13.3 ft-lb)
Noise and vibration level:
Operator sound pressure level (ICOMIA
39/94 and 40/94):
F40DET 78.1 dB(A)
F40GET 83.9 dB(A)
F50FED 78.1 dB(A)
F50FET 78.1 dB(A)
F60CET 78.1 dB(A)
F70AET 83.9 dB(A)
FT50GET 78.1 dB(A)
FT60DET 78.1 dB(A)
EMU33554
Installation requirements
EMU33564
Boat horsepower rating
WARNING
EWM01560
Overpowering a boat can cause severe
instability.
Before installing the outboard motor(s), con-
firm that the total horsepower of your out-
board motor(s) does not exceed the boats
maximum horsepower rating. See the boat’s
capacity plate or contact the manufacturer.
EMU33571
Mounting motor
WARNING
EWM01570
Improper mounting of the outboard mo-
tor could result in hazardous condi-
tions 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 in-
structions. For further information, see page
46.
EMU38580
Yamaha Security System
This outboard motor is equipped with the
Yamaha Security System to protect against
theft, which consists of the receiver and re-
mote control transmitter. The engine can not
be started if the security system is in the lock
mode, and only be started in the unlock
mode. Consult your Yamaha dealer for in-
stallation of the receiver.
EMU33581
Remote control requirements
WARNING
EWM01580
If the engine starts in gear, the boat can
move suddenly and unexpectedly, pos-
sibly 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 dis-
continue 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 un-
less it is in neutral.
6C1-9-79-1E0.book 13 ページ ２０１１年３月１７日 木曜日 午後２時５４分

Specifications and requirements
14
EMU25694
Battery requirements
EMU25721
Battery specifications
The engine cannot be started if battery volt-
age 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
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 ac-
cessory battery, consult your Yamaha dealer
about battery selection and correct wiring.
EMU34195
Propeller selection
Next to selecting an outboard motor, select-
ing the right propeller is one of the most im-
portant purchasing decisions a boater can
make. The type, size, and design of your pro-
peller have a direct impact on acceleration,
top speed, fuel economy, and even engine
life. Yamaha designs and manufactures pro-
pellers 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 boat-
load. Generally, select a larger pitch propel-
ler 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 86.
Minimum cold cranking amps (CCA/EN):
430.0 A
Minimum rated capacity (20HR/IEC):
70 Ah
1. Propeller diameter in inches
2. Propeller pitch in inches
3. Type of propeller (propeller mark)
1. Propeller diameter in inches
ZMU04606
-
x
123
ZMU04607
-
x
123
6C1-9-79-1E0.book 14 ページ ２０１１年３月１７日 木曜日 午後２時５４分