62Y-9-18 \
01.5.9 10:00 AM y [ W 1(2,1)
F50A/T50A
F50A
T50A
OWNER’S MANUAL
U.S.A.Edition
LIT-18626-04-72
62Y-9-18 \
01.5.9 10:00 AM y [ W 2(1,1)
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Page 1
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EMU01449
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.
Q
The Safety Alert Symbol means
ATTENTION! BECOME ALERT!
YOUR SAFETY IS INVOLVED!
w
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.
cC
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.
NOTE:
The F50TR, T50TR and their standard
accessories are used as a base for the
explanations and illustrations in this manual. Therefore, some items may not apply
to every model.
EMU01446
F50A/T50A
OWNER'S MANUAL
©2001 by Yamaha Motor Corporation, USA
1st Edition, April 2001
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Corporation, USA
is expressly prohibited.
Printed in Japan
P/N LIT-18626-04-72
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EMA20010
CONTENTS
E
GENERAL INFORMATION
1
BASIC COMPONENTS
2
OPERATION
3
MAINTENANCE
4
TROUBLE RECOVERY
5
INDEX
6
READ THIS OWNER’S MANUAL CAREFULLY
BEFORE OPERATING YOUR OUTBOARD MOTOR.
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EMB00010
Chapter 1
GENERAL
INFORMATION
IDENTIFICATION NUMBERS RECORD ..1-1
Outboard motor serial number...........1-1
Key number...........................................1-1
EMISSION CONTROL INFORMATION...1-2
1
2
SAFETY INFORMATION..........................1-4
IMPORTANT LABELS ..............................1-6
3
BASIC BOATING RULES .........................1-7
FUELING INSTRUCTIONS.....................1-11
Gasoline (Petrol).................................1-11
ENGINE OIL ............................................1-13
BATTERY REQUIREMENT ....................1-14
4
PROPELLER SELECTION .......................1-14
START-IN-GEAR PROTECTION ............1-16
5
6
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EMU00005
IDENTIFICATION NUMBERS
RECORD
EMU00007
OUTBOARD MOTOR SERIAL
NUMBER
YAMAHA MOTOR CO., LTD.
MADE IN JAPAN
PAYS D'ORIGINE JAPON
1
401012
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
EMU00008
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.
YAMAHA
q
123
904011*
1 Key number
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EMU01385
EMISSION CONTROL
INFORMATION
q
EMU01444
NORTH AMERICAN MODELS
w
******
This engine conforms to U.S. Environmental Protection Agency (EPA) regulations for marine SI engines. See the label
affixed to your engine for details.
Approval label of Emission control
certificate
This label is attached to the bottom cowling.
1 Emission control information label
EMISSION CONTROL INFORMATION
EM
ENGINE FAMILY :
THIS ENGINE CONFORMS TO 2001 U.S. EPA REGULATIONS FOR MARINE SI ENGINES.
THIS ENGINE CONFORMS TO 2001 CALIFORNIA EMISSION REGULATIONS FOR SI MARINE ENGINES.
REFER TO THE OWNERS MANUAL FOR MAINTENANCE SPECIFICATIONS AND ADJUSTMENTS.
g/kw-hr
FELs :
IDLE SPEED :
rpm IN NEUTRAL
SPARK PLUG :
SPARK PLUG GAP (mm) :
DISPLACEMENT :
cm 3
FUEL : GASOLINE
ADVERTISED POWER :
EX
VALVE LASH (mm) : IN
kw
New Technology ; (4-stroke/HPDI) EM
Manufactured date label
This label is attached to the clamp bracket.
2 Manufactured date label
Manufactured:
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EMU01389
STAR LABELS
q
Your outboard motor is labeled with a
California Air Resources Board (CARB)
star label. See below for a description of
your particular label.
1 Star label
000957
One Star - Low Emission
The one-star label identifies engines that
meet the Air Resources Board’s 2001
exhaust emission standards. Engines
meeting these standards have 75% lower
emissions than conventional carbureted
two-stroke engines. These engines are
equivalent to the U.S. EPA’s 2006 standards for marine engines.
Two Stars - Very Low Emission
The two-star label identifies engines that
meet the Air Resources Board’s 2004
exhaust emission standards. Engines
meeting these standards have 20% lower
emissions than One Star-Low-Emission
engines.
Three Stars - Ultra Low Emission
The three-star label identifies engines that
meet the Air Resources Board’s 2008
exhaust emission standards. Engines
meeting these standards have 65% lower
emissions than One Star-Low-Emission
engines.
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EMU00917
Q
SAFETY
INFORMATION
8 Before mounting or operating the outboard motor, read this entire manual.
Reading it should give you an understanding of the motor and its operation.
8 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.
8 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.
8 Do not modify the outboard. Modifications could make the motor unfit or
unsafe to use.
8 Never operate after drinking alcohol or
taking drugs. About 50% of all boating
fatalities involve intoxication.
8 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-swimmers should always
wear PFDs, and everyone should wear
PFDs when there are potentially hazardous boating conditions.
8 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.
8 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.
8 Check throttle, shift, and steering for
proper operation before starting the
engine.
8 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.
8 Know the marine laws and regulations
where you will be boating - and obey
them. Refer to the “RULES OF THE
ROAD” section for basic boating rules.
8 Stay informed about the weather.
Check weather forecasts before boating.
Avoid boating in hazardous weather.
8 Tell someone where you are going:
leave a Float Plan with a responsible
person. Be sure to cancel the Float Plan
when you return.
8 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.
8 Always watch carefully for swimmers
during the engine operation.
8 Stay away from swimming areas.
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8 When a swimmer is in the water near
you shift into neutral and shut off the
engine.
8 Be informed about boating safety. Additional publications and information can
be obtained from many organizations,
including the following:
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
Boating Safety Hotline: 1-800-368-5647
National Marine Manufacturers
Association (NMMA)
401 N. Michigan Ave.
Chicago, Il 60611
Marine Retailers Association of America
155 N. Michigan Ave.
Chicago, Il 60601
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EMB30011
q
IMPORTANT LABELS
WARNING LABELS
1
WARNING
w
Be sure shift control is in neutral
before starting engine. (except 2HP)ê
Do not touch or remove electrical partsê
when starting or during operation.
Keep hands,hair,and clothes away from flywheel
and other rotating parts while engine is running.
202011**
6A1-83625-41
CAUTION LABELS
2
CAUTION
Transport and store the engine only as shown.
Otherwise, engine damage could result from
leaking oil.
62Y-13444-40
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EMB40010*
BASIC BOATING RULES
(Rules of the road)
Just as there are rules which apply when
you are driving on streets and high ways,
there are waterway rules which apply
when you are driving your boat. These
rules are used internationally, 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.
Several sets of rules prevail according to
geographic location, but are all basically
the same as the International Rules of the
Road. The rules presented here in your
Owner’s Manual are condensed, and have
been provided for your convenience only.
Consult your local U.S. Coast Guard Auxiliary or Department of Motor Vehicles for
a complete set of rules governing the
waters in which you will be using your
boat.
STEERING AND SAILING RULES AND
SOUND SIGNALS
Whenever two vessels on the water meet
one another, one vessel has the right-ofway; it is called the “stand-on” vessel.
The vessel which does not have the rightof-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 which does not have the rightof-way 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.
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will clear one another if you continue on
your set course and speed.
RULES WHEN ENCOUNTERING
VESSELS
There are three main situations which 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 travelling 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-ofway 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.
102044
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.
102045
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
102046
Overtaking
If you are passing another vessel, you are
the “Give-Way” vessel. This means that
the other vessel is expected to maintain
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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.
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
power-driven 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.
Fishing vessel right-of-way
All vessels which 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 powerdriven 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 which 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 informa-
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tion. 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.
N
EL
MAIN CHANNEL BUOYS
A
N
" 6"
A
C
H
C " 1"
M
N
N
O
A
N
White Light
C
H
D
A
R
Odd number. increasing toward head of navigation.Leave to port (left) proceeding upstream.
EL
SE
C
RB " L "
or
RG " L "
LIGHTED BUOY (Port Hand)`
N " 2"
Y
IN
" 7"
" 1" " 3" " 5" " 7"
1
OR
Green Light
1
" 5"
BUOY
COLOR CODE
" 4"
new
old
BLACK
" 2" " 4" " 6"
LIGHTED BUOY (Starboard Hand)`
RED
" 3"
GREEN
Even number,increasing toward head of navigation. Leave to starboard (right) proceeding upstream.
White Light
" A"
2
OR
Red Light
2
" 2"
new
old
" 1"
" A"
LIGHTED SAFE WATER BUOY
Proceeding toward head
of navigation from seaward
SECONDARY CHANNEL BUOYS
No number. Marks midchannel, pass on either
side. Letter has no lateral significance, used for
identification and location purposes.
Top Mark
STARTS NEW NUMBERING SYSTEM
White Light
C " 1"
CAN BUOY
Odd number. Leave to port.
OR
1
1
OR
new
old
old
N " 2"
White Light
A
A
new
RB " L "
RG " L "
LIGHTED PREFERRED CHANNEL TO
PORT BUOY
NUN BUOY
Even number. Leave to starboard
No number. Topmost band red - preferred
channel is to left of buoy. Letter has no lateral
significance, used for identification and location
purposes.
2
L
old
Red or
White Light
Red Light
L
new
No change
102052
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EMB50410
FUELING INSTRUCTIONS
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GASOLINE AND ITS VAPORS ARE HIGHLY FLAMMABLE AND EXPLOSIVE!
8 Do not smoke when refueling, and
keep away from sparks, flames, or
other sources of ignition.
8 Stop engine before refueling.
8 Refuel in a well-ventilated area. Refuel
portable fuel tanks off the boat.
8 Take care not to spill gasoline. If gasoline spills, wipe it up immediately with
dry rags.
8 Do not overfill the fuel tank.
8 Tighten the filler cap securely after
refueling.
8 If you should swallow some gasoline
inhale a lot of gasoline vapor, or get
gasoline in your eyes, get immediate
medical attention.
8 If any gasoline spills onto your skin,
immediately wash with soap and
water. Change clothing if gasoline spills
on it.
8 Touch the fuel nozzle to the filler opening or funnel to help prevent electrostatic sparks.
GASOLINE (PETROL)
Recommended gasoline:
Regular unleaded gasoline with a
minimum octane rating of 86
(Pump octane number): (R+M)/2
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If knocking or pinging occurs, use a different brand of gasoline or premium unleaded fuel. Unleaded fuel will give you
longer spark plug life and reduced maintenance cost. If unleaded gasoline is not
available, then leaded regular gasoline
can be used. If leaded gasoline is usually
used, engine valves and related parts
should be inspected after every 300 hours
of operation.
Gasohol
There are two types of gasohol: gasohol
containing ethanol and that containing
methanol. Gasohol containing ethanol
can be used if ethanol content does not
exceed 10% and the fuel meets minimum
octane ratings. Gasohol containing
methanol is not recommended by Yamaha because it can cause fuel system damage or engine performance problems.
cC
Use only new clean gasoline which has
been stored in clean containers and is not
contaminated with water or foreign matter.
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EMU01149
ENGINE OIL
Recommended engine oil;
Use a combination of corresponding SAE
and API shown in the chart below;
SAE
_4
32
68
104°F
_ 20
0
20
40°C
API
SE
SF
SG
SH
10W-30, 10W-40
20W-40
Engine oil quantity:
Refer to “SPECIFICATIONS”, Page 4-1.
cC
All four-stroke engines are shipped from
the factory without engine oil.
NOTE:
If the recommended engine oil is not
available, then a multigrade type engine
oil such as SF-CC/CD,SG-CC/CD or SH-CD
can be used.
000292
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EMU00031
BATTERY REQUIREMENT
cC
Do not use the battery that does not
meet the specified capacity. If different
battery from the specification is used, the
electric system may perform poorly or be
overloaded, causing electrical system
damage.
Choose battery which meets the following
specifications for Electric start model.
Minimum cold crank performance
380 Amps at -17.8°C (0°F)
Minimum reserve capacity
124 minutes at 26.7°C (80°F)
EMU01395
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.
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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.
NOTE:
At full throttle and under a maximum
boat load, the engine’s rpm should be
within the upper half of the full throttle
operating range, as listed in “SPECIFICATIONS” on page 4-1. Select a propeller
which fulfills this requirement.
If operating under conditions which allow
the engine’s rpm to rise above the maximum recommended range (such as light
boat loads), reduce the throttle setting to
maintain the rpm in the proper operating
range.
F50
10-3/4x17-G
1
23
602011
1 Propeller diameter (in inches)
2 Propeller pitch (in inches)
3 Type of propeller (propeller mark)
T50
Refer to the section “CHECKING PROPELLER” for instructions on propeller
removal and installation.
13 x 17 - K
q we
000933
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EMU01209
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 Neutral.
Always select Neutral before starting the
engine.
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-MEMO-
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EMC00010
Chapter 2
BASIC COMPONENTS
MAIN COMPONENTS..............................2-1
OPERATIONS OF CONTROLS AND
OTHER FUNCTIONS ................................2-2
Fuel tank ................................................2-2
Remote control .....................................2-3
Trim tab .................................................2-7
Power trim/tilt switch ...........................2-8
Trim angle adjusting rod .....................2-8
Digital tachometer................................2-9
Tilt support lever ................................2-12
Top cowling lock lever.......................2-12
Flushing device...................................2-12
WARNING SYSTEM ..............................2-13
Overheat warning...............................2-13
Low oil pressure warning..................2-14
1
2
3
4
5
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EMU01206
MAIN COMPONENTS
!3
!2
!1
!0
o
!4
q
w
!1
e
!5
r
t
y
!6
r
i
u
1
2
3
*4
5
6
7
8
9
Top cowling
Cowling lock lever
Oil drain bolt
Anodes
Anti-cavitation plate
Trim tab (Anode)
Propeller
Cooling water inlet
Trim angle adjusting-rod
0
q
w
e
r
*t
*y
Clamp bracket
Tilt support lever
Power trim and tilt switch
Flushing device
Fuel joint
Remote control box
Digital tachometer
* May not be exactly as shown; also may not
be included as standard equipment on all
models.
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EMC20010
OPERATIONS OF CONTROLS
AND
OTHER FUNCTIONS
EMC21012
FUEL TANK
If your model was equipped with a
portable fuel tank, its function is as follows.
q
e
r
1
2
3
4
w
Fuel hose joint
Fuel meter (If equipped)
Fuel tank cap
Air vent screw (If equipped)
EMC31010
ê
902051*
Fuel hose joint
This connector is provided for connecting
or disconnecting fuel hose.
EMC41110
Fuel meter
This meter is on the fuel tank cap. It
shows current fuel quantity in the fuel
tank approximately.
EMC51010
Fuel tank cap
This cap is for filling fuel. To remove it,
turn it counterclockwise.
EMC61010
Air vent screw
This screw is on the fuel tank cap. To
loosen it, turn it counterclockwise.
2-2
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Page 4
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EMC80612
REMOTE CONTROL
y
q
Both the shifter and the throttle are actuated by the remote control lever. In addition, this control also has the electrical
switches.
w
e
r
t
u
701011*
1
2
3
4
5
6
7
Remote control lever
Neutral interlock trigger
Neutral throttle lever
Main switch
Engine stop lanyard switch
Power trim and tilt switch
Throttle friction adjusting screw
EMC50010
w
F
r
Nq
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.
r Re
y
t
y
t
u
u
701031
1
2
3
4
5
6
7
Neutral
Forwar
Reverse
Shift
Fully closed
Throttle
Fully open
EMC50110
Neutral interlock trigger
To shift out of Neutral, the neutral interlock trigger of the remote control lever
must first be pulled up.
UP
DN
000323
2-3
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Page 5
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EMC50210
N
q
w
701033*
Neutral throttle lever
To open the throttle without shifting into
either Forward or Reverse, place the
remote control lever in the Neutral position and lift the neutral throttle lever.
NOTE:
The neutral throttle lever will operate only
when the remote control lever is in Neutral. The remote control lever will operate
only when the neutral throttle lever is in
the closed position.
1 Fully open
2 Fully closed
EMC48110
OFF
ON
START
701021
Main switch
The main switch controls the ignition system; its operation is described below.
8 OFF
Electrical circuits switched off.
(The key can be removed.)
8 ON
Electrical circuits switched on.
(The key cannot be removed.)
8 START
Starter-motor will turn and start engine.
(When the key is released, it returns automatically to “ON”.)
2-4
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Page 6
E
EMC28210
Engine stop lanyard switch
The lock-plate on the end of the lanyard
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.
w
8 Attach the engine stop switch lanyard
to a secure place on your clothing, your
arm or leg while operating.
8 Do not attach the lanyard to clothing
that could tear loose. Do not route the
lanyard in such a way that it could
become entangled, preventing it from
functioning.
8 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.
q
1 Lock-plate
2 Lanyard
w
000569
2-5
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Page 7
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EMU01331
UP
DN
UP
DN
701034*
Power Trim/Tilt Switch
The power trim/tilt adjusts the motor
angle in relation to the transom. The
power trim/tilt switch is located on the
remote control lever grip. Pushing the
switch “UP” trims the motor up, then tilts
the motor up. Pressing the switch “DN”
tilts the motor down and trims the motor
down. When the switch button is
released, the motor will stop in its current
position.
NOTE:
Refer to the sections “ADJUSTING TRIM
ANGLE” and “TILTING UP/DOWN” in
Chapter 3 for instructions on usage.
EMU01155
Throttle Friction Adjusting Screw
A friction device in the remote control box
provides adjustable resistance to movement of the remote control lever, and can
be set according to operator preference.
An adjusting screw is located on the front
of the remote control box.
701035
Resistance
Screw
Increase
Turn clockwise
Decrease
Turn counterclockwise
w
Do not overtighten the friction adjusting
screw. If there is too much resistance, it
may be difficult to move the lever, which
could result in an accident.
2-6
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Page 8
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EMU00113
F50
TRIM TAB
The trim tab should be adjusted so that
the steering control can be turned to
either the right or left by applying the
same amount of force.
A
q
w
w
B
603011
T50
e
An improperly adjusted trim tab may
cause difficult steering. Always test run
after the trim tab has been installed or
replaced to be sure steering is correct. Be
sure you have tightened the bolt after
adjusting the trim tab.
w
q
1 Trim tab
2 Bolt
3 Cap (If equipped)
B
A
Boat tends to veer
The fin of trim tab
To the left
(port side)
Turn to the left
(A in the figure)
To the right
(starboard side)
Turn to the right
(B in the figure)
603014*
cC
The trim tab also serves as an anode to
protect the engine from electrochemical
corrosion. Never paint the trim tab as it
will become ineffective as an anode.
2-7
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5/16/01 10:23 AM
Page 9
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EMU01125
POWER TRIM/TILT SWITCH
UP
DOWN
302011
The power trim/tilt adjusts the motor
angle in relation to the transom. The
power trim/tilt switch is located on the
side of the bottom engine cowling. Pushing the switch “UP” trims the motor up,
then tilts the motor up. Pressing the
switch “DN” tilts the motor down and
trims the motor down. When the switch
button is released, the motor will stop in
its current position.
w
Use the power trim/tilt switch located on
the bottom engine cowling only when
the boat is at a complete stop with the
engine off. Attempting to use the cowling-mounted power trim/tilt switch while
the boat is moving could increase the risk
of falling overboard and could distract
the operator, increasing the risk of collision with another boat or an obstacle.
NOTE:
Refer to the section “Adjusting Trim
Angle” and “Tilting Up/Down” for instructions on usage.
EMU01297
TRIM ANGLE ADJUSTING ROD
The position of the trim angle adjusting
rod determines the minimum trim angle
of the outboard motor in relation to the
transom.
000969
2-8
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Page 10
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EMU01617
DIGITAL TACHOMETER
q
w
e
t
y
r
u
001081
This gauge contains the tachometer, trim
meter, hour meter, low oil pressure warning indicator, and the overheat warning
indicator.
1
2
3
4
5
6
7
Tachometer
Trim meter
Hour meter
Low oil pressure warning indicator
Overheat warning indicator
Set button
Mode button
NOTE:
All segments of the display will light
momentarily after the main switch is
turned on and will return to normal thereafter.
001085
EMU00136
Tachometer
This meter shows the engine speed.
001058
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Page 11
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EMU01109
001059
Trim Meter
This meter shows the trim angle of your
outboard motor.
NOTE:
8 Memorize the trim angles that work
best for your boat under different conditions. Adjust the trim angle to the
desired setting by operating the power
trim and tilt switch.
8 If the trim angle of your motor exceeds
the trim operating range, the top segment on the trim meter display will start
to blink.
EMU01620
001088
Hour Meter
This meter shows the number of hours
the engine has been run. It can be set to
show the total number of hours or the
number of hours for the current trip. The
display can also be turned on and off.
8 Changing the display format
Pressing the MODE button changes the
display format in the following circular
pattern:
Total hours - Trip hours - Display off
8 Resetting the trip hours
Simultaneously pressing the SET and
MODE buttons for more than 1 second
while the trip hours are displayed resets
the trip counter to 0 (zero).
NOTE:
The total number of hours the engine has
been run cannot be reset.
2-10
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Page 12
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EMU01110
Low Oil Pressure Warning Indicator
If oil pressure drops too low, the warning
indicator will start to blink. Refer to the
section “LOW OIL PRESSURE WARNING”
for details.
1 Low oil pressure warning indicator
q
001060
cC
8 Do not operate the engine without oil.
Serious engine damage will occur.
8 The low oil pressure warning indicator
does not indicate the oil level in the
engine. Use the Oil Level Gauge to
check the remaining oil quantity. (Refer
to the section “CHECKING THE ENGINE
OIL LEVEL” for details.)
EMU01553
Overheat Warning Indicator
If the engine temperature rises too high,
the warning indicator will start to blink.
Refer to “OVERHEAT WARNING” for
details.
q
1 Overheat warning indicator
001061
cC
Do not continue to operate the engine if a
warning device has activated. If necessary, refer to the “TROUBLESHOOTING”
section in this manual. Consult your dealer if the problem cannot be located and
corrected.
2-11
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Page 13
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EMD60010
TILT SUPPORT LEVER
To keep the outboard motor in the tiltedup position, lock the tilt support lever to
the clamp bracket.
000971
EMD62110
TOP COWLING LOCK LEVER
To remove the engine top cowling, pull
up the lock lever. Then lift off the cowling.
When replacing the cowling, check to be
sure it fits properly in the rubber seal.
Then lock the cowling again by moving
the lever downward.
301011
EMU01146
FLUSHING DEVICE
q
000280
This device 1 is used to clean the cooling
water passages of the motor using a garden hose and tap water.
NOTE:
Refer to “Cleaning Cooling-water Passages” in Chapter 4 for instructions on
usage.
2-12
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Page 14
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EMD80010
WARNING SYSTEM
cC
Do not continue to operate the engine if
the warning device has activated. Consult
your Yamaha dealer if the problem cannot be located and corrected.
EMU00170
OVERHEAT WARNING
This engine has an overheat warning
device. If the engine temperature rises too
high, the warning device will activate.
(1); Included (—); N/A
Activation of
warning device
001062
605015
Tiller
control
model
Remote
control
model
The engine speed
will automatically
decrease to about
2,000 r/min.
1
The overheat
warning indicator
will come on.
1
The buzzer will sound.
1
If the warning system has been activated,
stop the engine and check the water inlet
for clogging.
2-13
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Page 15
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EMU00173
LOW OIL PRESSURE WARNING
If oil pressure drops too low, the warning
device will activate.
(1):Included (—):N/A
Activation of
warning device
001086
Tiller
control
model
Remote
control
model
Engine speed will
automatically
decrease to
about 2,000 r/min.
1
The low oil pressure
warning indicator
will come on.
1
The buzzer will sound.
1
If the warning system has been activated,
stop the engine as soon as it is safe to do
so. Check oil level and add oil as needed.
If the oil level is correct, consult your
Yamaha dealer.
cC
Do not continue to run the engine if the
low oil pressure lamp is “ON”. Serious
engine damage may occur.
2-14
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Page 16
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-MEMO-
62Y-9-18-3
5/16/01 10:31 AM
Page 1
E
EMF00010
Chapter 3
OPERATION
INSTALLATION ........................................3-1
Mounting the outboard motor............3-2
FILLING FUEL ...........................................3-4
PRE-OPERATION CHECKS ......................3-5
Checking the engine oil level ..............3-6
BREAKING IN (RUNNING IN) ENGINE ..3-7
STARTING ENGINE .................................3-8
1
2
3
WARMING UP ENGINE .........................3-11
SHIFTING ................................................3-12
Forward ...............................................3-12
Reverse................................................3-12
STOPPING ENGINE ...............................3-13
TRIMMING OUTBOARD MOTOR.........3-14
Adjusting trim angle ..........................3-15
TILTING UP/DOWN ...............................3-17
CRUISING IN OTHER CONDITIONS.....3-19
Cruising in salt water.............................3-19
Cruising in turbid water.....................3-19
4
5
6
62Y-9-18-3
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Page 2
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EMF10010
INSTALLATION
cC
Incorrect engine height or obstructions to
smooth water flow (such as the design or
condition of the boat or accessories such
as transom ladders/depth finder transducers) can create airborne water spray
while the boat is cruising. Severe engine
damage may result if the motor is operated continuously in the presence of airborne water spray.
000940
NOTE:
During water testing check the buoyancy
of the boat, at rest, with its maximum
load. Check that the static water level on
the exhaust housing is low enough to prevent water entry into the powerhead,
when water rises due to waves when the
outboard is not running.
3-1
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Page 3
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EMF12012
MOUNTING THE OUTBOARD
MOTOR
w
Improper mounting of the outboard
motor could result in hazardous conditions such as poor handling, loss of control, or fire hazards. Observe the following:
8 The information presented in this section is intended as reference only. It is
not possible to provide complete
instructions
for
every
possible
boat/motor
combination.
Proper
mounting depends in part on experience and the specific boat/motor combination.
8 Your dealer or other person experienced in proper rigging should mount
the motor. If you are mounting the
motor yourself, you should be trained
by an experienced person. [permanent
mounted type]
8 Your dealer or other person experienced in proper outboard motor
mounting should show you how to
mount your motor. [portable type]
Mount the outboard motor on the center
line (keel line) of the boat, and ensure that
the boat itself is well balanced. Otherwise,
the boat will be hard to steer. For boats
without a keel or which are asymmetrical,
consult your dealer.
1 Center line (keel line)
q
104011*
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Page 4
E
w
Overpowering a boat may cause severe
instability. Do not install an outboard
motor with more horsepower than the
maximum rating on the capacity plate of
the boat. If the boat does not have a
capacity plate, consult the boat manufacturer.
EMU01299
104014
Mounting Height
To run your boat at optimum efficiency,
the water-resistance (drag) of the boat
and outboard motor must be made as little as possible. The mounting-height of
the outboard motor greatly affects the
water-resistance. If the mounting-height
is too high, cavitation tends to occur, thus
reducing the propulsion; and if the propeller tips cut the air, the engine speed
will rise abnormally and cause the engine
to overheat. If the mounting-height is too
low, the water-resistance will increase
and thereby reduce engine efficiency.
Mount the engine so that the anti-cavitation plate is in alignment with the bottom
of the boat .
NOTE:
8 The optimum mounting height of the
outboard motor is affected by the
boat/motor combination. Test runs at
different heights can help determine the
optimum mounting height.
8 Refer to the section “TRIMMING OUTBOARD MOTOR” for instructions on
setting the trim angle of the outboard.
3-3
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Page 5
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EMF30211*
FILLING FUEL
1)
2)
3)
Remove the fuel tank cap.
Fill the fuel tank carefully.
Close the cap securely after refueling.
Wipe up any spilled fuel.
EMF21110
902055
Ring Free Fuel Additive
Gasoline is a precise blend of many different substances, each chosen to give certain characteristics. Gasoline blends have
been changing in recent years in
response to concerns about pollution and
resulting emissions regulations. One of
the most obvious changes has been the
elimination of lead from most fuels.
As gasoline has changed, the amount of
additives such as aromatics and oxygenates has increased. These additives
are important for the engines in passenger cars, but they can have detrimental
effects in marine engines, because of
increased deposits in the combustion
chamber. When enough deposits collect,
piston rings begin sticking. Performance
drops and engine wear increases dramatically.
While many additives available may
reduce deposits, Yamaha recommends
the use of Ring Free Fuel Additive, available from your Yamaha dealer. Ring Free
has repeatedly proven its ability to clean
combustion deposits from inside the
engine, notably the critical piston-ringland area, and fuel system components.
Follow product labeling for use instructions.
3-4
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Page 6
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EMF40012
PRE-OPERATION CHECKS
w
If any item in the pre-operation check is
not working properly, have it inspected
and repaired before operating the outboard motor. Otherwise, an accident
could occur.
EMF41110
Fuel
8 Check to be sure you have plenty of fuel
for your trip.
8 Make sure there are no fuel leaks or
gasoline fumes.
8 Check fuel line connections to be sure
they are tight.
8 Be sure the fuel tank is positioned on a
secure, flat surface, and that the fuel
hose is not twisted or flattened, or likely
to contact sharp objects.
EMF42210
Oil
8 Check the level of the oil in the sump
with the dipstick. If necessary, add oil to
bring the level up to the upper mark.
EMF43010
Controls
8 Check throttle, shift, and steering for
proper operation before starting the
engine.
8 The controls should work smoothly,
without binding or unusual free play.
8 Look for loose or damaged connections.
8 Check operation of the starter and stop
switches when the outboard motor is in
the water.
3-5
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Page 7
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EMF43510
Engine
8 Check the engine and engine mounting.
8 Look for loose or damaged fasteners.
8 Check the propeller for damage.
cC
Do not start the engine out of water.
Overheating and serious engine damage
can occur.
EMU01436
CHECKING THE ENGINE OIL LEVEL
q
1)
2)
3)
201011*
w
e
4)
q
Put the outboard motor in an upright
position (not tilted).
Pull out the oil dipstick and wipe it
clean.
Completely re-insert the dipstick and
pull out it again.
Check the oil level using the dipstick
to be sure the level falls between the
upper and lower marks. Fill with oil if
it is below the lower mark, or drain to
the specified level if it is above the
upper mark.
1 Oil dipstick
2 Lower level mark
3 Upper level mark
201012*
3-6
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Page 8
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EMF50312
BREAKING IN (RUNNING IN)
ENGINE
Your new engine requires a period of
break-in (running-in) to allow mating surfaces of moving parts to wear-in evenly.
Correct break-in (running-in) will help
ensure proper performance and longer
engine life.
cC
Failure to follow the break-in (running-in)
procedure may result in reduced engine
life or even severe engine damage.
Break-in (running-in) time: 10 hours
EMU00233
Run the engine under load (in gear with a
propeller installed) as follows.
1) For the first hour of operation:
Run the engine at 2,000 r/min or at
approximately half throttle.
2) For the second hour of operation:
Run the engine at 3,000 r/min or at
approximately three-quarter throttle,
and during this period run it at full
throttle for approximately one minute
every ten minutes.
3) For the next eight hours of operation:
Avoid continuous operation at full
throttle for more than five minutes at
a time.
4) After these first 10 hours:
Operate the engine normally.
3-7
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Page 9
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EMU01147
STARTING ENGINE
w
902053
304011*
8 Before starting the engine, make sure
that the boat is tightly moored and that
you can steer clear of any obstructions.
Be sure there are no swimmers in the
water near you.
8 When the air vent screw is loosened,
gasoline (petrol) vapor will be released.
Gasoline (petrol) is highly flammable,
and its vapors are flammable and
explosive. Refrain from smoking, and
keep away from open flames and
sparks while loosening the air vent
screw.
8 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.
1)
902061
If there is an air vent screw on the fuel
tank cap, loosen it 2 or 3 turns.
2) If there is a fuel joint on the motor,
firmly connect the fuel line to the
joint. Then firmly connect the other
end of the fuel line to the joint on the
fuel tank.
NOTE:
During engine operation place the tank
horizontally, or fuel cannot be drawn into
the engine.
3)
902025
3-8
Squeeze the primer bulb with the outlet end up until you feel it become
firm.
62Y-9-18-3
5/16/01 10:31 AM
Page 10
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EMU01000
N
PROCEDURE FOR REMOTE
CONTROL MODEL
4)
701014
Place the remote control lever in the
Neutral position.
When the engine is warm, open the
throttle slightly using the neutral
throttle lever or the free accelerator.
After the engine starts, return the
throttle to the fully closed position.
NOTE:
The start-in-gear protection device prevents the engine from starting except
when in Neutral.
5)
000293
Attach the engine stop switch lanyard
to a secure place on your clothing, or
your arm or leg. Then, install the lock
plate on the other end of the lanyard
in the engine stop switch.
w
8 Attach the engine stop switch lanyard
to a secure place on your clothing, your
arm or leg while operating.
8 Do not attach the lanyard to clothing
that could tear loose. Do not route the
lanyard where it could become entangled, preventing from functioning.
8 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.
ON
OFF
6)
000977
3-9
Turn the main switch to “ON”.
62Y-9-18-3
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Page 11
E
EMU00949
ON
START
000978
Electric Start Model
7) Turn the main switch to “START”,
and hold it for a maximum of 5 seconds.
8) Immediately after the engine starts,
release the main switch to return it to
“ON”.
cC
8 Do not turn the main switch to
“START” when the engine is running.
8 Do not keep the starter-motor turning
for more than 5 seconds. The battery
will rapidly become exhausted and it
will be impossible for it to start the
engine. If the engine does not start
within 5 seconds, return the main
switch to “ON”, wait 10 seconds, and
then crank the engine again.
3-10
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Page 12
E
EMG00410
WARMING UP ENGINE
1)
2)
3)
Before beginning operation, allow the
engine to warm up at idling speed for
3 minutes. (Failure to do this will
shorten engine life.)
Be sure the low oil pressure warning
lamp goes off after starting the
engine.
Check for a steady flow of water from
the cooling-water pilot hole.
cC
309011
8 If the low oil pressure lamp does not go
off after the engine starts, stop the
engine. Otherwise, serious engine damage could occur. Check the oil level and
add oil if necessary. If the cause for the
low oil pressure warning lamp cannot
be found, consult your Yamaha dealer.
8 A continuous flow of water from the
pilot hole shows that the water pump
is pumping water through the cooling
passages. If water is not flowing out of
the pilot hole at all times while the
engine is running, do not continue to
run the engine. Overheating and serious damage could occur. Stop the
engine and check to see if the water
inlet on the lower casing is blocked. If
the problem cannot be found and corrected, consult your Yamaha dealer.
3-11
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Page 13
E
EMG20111
SHIFTING
UP
DN
w
Before shifting, make sure there are no
swimmers or obstacles in the water near
you.
000323
cC
To change the shifting position from forward to reverse or vice-versa, close the
throttle first so that the engine idles (or
runs at low speeds).
N
F
EMU00264
FORWARD
701043
Pull up the neutral interlock trigger (If
equipped) and move the remote control
lever quickly and firmly from Neutral to
Forward.
EMU00269
REVERSE
UP
DN
w
000323
N
When operating in Reverse, go slowly. Do
not open the throttle more than half. Otherwise, the boat may become unstable,
which could result in loss of control and
an accident.
Pull up the neutral interlock trigger (If
equipped) and move the remote control
lever quickly and firmly from Neutral to
Reverse.
R
701044
3-12
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Page 14
E
EMG38010
STOPPING ENGINE
Let it cool off for a few minutes at idle or
low speed first. Stopping the engine
immediately after operating at high speed
is not recommended.
EMU00276
PROCEDURE
Main switch equipped model
ON
OFF
START
1)
Turn the main switch to “OFF”.
2)
If the fuel joints are provided, disconnect the fuel line from the motor after
stopping the engine.
701023
304011*
3)
902052
Tighten the air vent screw on the fuel
tank cap after stopping the engine, if
it is equipped.
4) Remove the key if the boat will be left
unattended.
NOTE:
The engine can also be stopped by
pulling the lanyard and removing the lock
plate from the engine stop lanyard switch
(then turning the main switch to “OFF”).
3-13
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5/16/01 10:31 AM
Page 15
E
EMU01412
TRIMMING OUTBOARD
MOTOR
The trim angle of the outboard motor
helps determine the position of the bow
of the boat in the water. The correct trim
angle will help improve performance and
fuel economy while reducing strain on the
engine. The correct trim angle depends
upon the combination of boat, engine,
and propeller. Correct trim is also affected
by variables such as the load in the boat,
sea conditions, and running speed.
w
q
000946
Excessive trim for the operating conditions (either trim up or trim down) can
cause boat instability and can make
steering the boat more difficult. This
increases the possibility of an accident. If
the boat begins to feel unstable or is hard
to steer, slow down and/or readjust the
trim angle.
NOTE:
Refer to the section “ADJUSTING TRIM
ANGLE” for instructions on usage.
1 Trim operating angle
3-14
62Y-9-18-3
5/16/01 10:31 AM
Page 16
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ADJUSTING TRIM ANGLE
EMU01401
Power Trim/Tilt Model
w
8 Be sure all people are clear of the outboard motor when adjusting the
trim/tilt angle, also be careful not to
pinch any body parts between the drive
unit and clamp bracket.
8 Use caution when trying a trim position
for the first time. Increase speed gradually and watch for any signs of instability or control problems.
8 Use the power trim/tilt switch located
on the bottom engine cowling (if
equipped) only when the boat is at a
complete stop with the engine off.
The outboard motor trim angle can be
adjusted operating the power trim/tilt
switch 1.
UP
DN
To raise the bow (“trim-out”), push the
switch UP.
UP
DN
To lower the bow (“trim-in”), push the
switch DN.
q
701034*
Make test runs with the trim set to different angles to find the position that works
best for your boat and operating conditions.
NOTE:
To adjust the trim angle while the boat is
moving, use the power trim and tilt
switch located on the remote control
device or tiller handle, if so equipped.
3-15
62Y-9-18-3
5/16/01 10:31 AM
Page 17
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EMG62010
Bow up
When the boat is on plane, a bow-up attitude result in less drag, greater stability
and efficiency. This is generally when the
keel line of the boat is up about 3 to 5
degrees. When trimmed out, the boat
may have more tendency to steer to one
side or the other. Compensate for this as
you steer. The trim tab can also be adjusted to help offset this effect.
q
105011
w
Too much trim-out puts the bow of the
boat too high in the water. Performance
and economy are decreased because the
hull of the boat is pushing the water and
there is more air drag.
Excessive trim-up can cause the propeller
to ventilate, which reduces performance
further. When trimmed-out too much, a
boat may “porpoise” (hop in the water),
which could throw the operator and passengers overboard.
EMG62110
Bow down
When the bow of the boat is down, it is
easier to accelerate from a standing start
onto plane.
105013
e
105015
Too much trim-in causes the boat to
“plow” through the water, decreasing
fuel economy and making in hard to
increase speed.
Operating with excessive trim-in at higher
speeds also makes the boat unstable.
Resistance at the bow is greatly
increased, heightening the danger of
“bow steering” and making operation difficult and dangerous.
1 Bow up
2 Bow down
3 Optimum angle
3-16
62Y-9-18-3
5/16/01 10:31 AM
Page 18
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EMU01200
TILTING UP/DOWN
000817
If the engine will be stopped for some
time, or if the boat is moored in shallows,
the engine should be tilted up to protect
the propeller and casing from damage by
collision with obstructions, and also to
reduce salt corrosion.
cC
Before tilting the motor, follow the procedures under “STOPPING ENGINE”. Never
tilt the motor while the engine is running.
Severe damage from overheating can
result.
w
Be sure all people are clear of the outboard motor when adjusting the tilt
angle, also be careful not to pinch any
body parts between the drive unit and
engine bracket.
w
Leaking fuel is a fire hazard. Disconnect
the fuel line or close the fuel cock if the
engine will be tilted for more than a few
minutes. Otherwise, fuel may leak. (If the
fuel connector is provided on the motor.)
3-17
62Y-9-18-3
5/16/01 10:31 AM
Page 19
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EMU01029
PROCEDURE FOR TILTING UP
Power trim/tilt model
1)
Remove the fuel-line connection from
the motor. (If the fuel connector is
provided on the motor.)
2)
Push the power trim/tilt switch “UP”
until the outboard has tilted up completely.
3)
Turn the tilt-support lever toward
engine bracket and support the
engine.
304011*
UP
DN
UP
DN
701034*
UP
DN
302011
w
000971
8 After tilting the engine, be sure to support it with the tilt-support lever. Otherwise, the engine could fall back down
suddenly if oil in the power trim/tilt
unit should lose pressure.
8 Never operate the engine while it is
supported by the tilt-support lever.
3-18
62Y-9-18-3
5/16/01 10:31 AM
Page 20
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EMU00303
PROCEDURE FOR TILTING DOWN
Power trim/tilt model
1)
2)
3)
000979
Push the power trim/tilt switch “UP”
until the engine is supported by the
tilt rod.
Release the tilt-support lever.
Push the power trim/tilt switch “DN”
(Down) to lower the engine to the
desired position.
EMH60010
CRUISING IN OTHER
CONDITIONS
CRUISING IN SALT WATER
After operating in salt water, wash out the
cooling-water passages with fresh water
to prevent them from becoming cloggedup with salt deposits.
NOTE:
Refer to cooling system flushing instructions in “TRANSPORTING AND STORING
OUTBOARD MOTOR”.
CRUISING IN TURBID WATER
It is strongly recommended that the
optional chromium-plated water-pump kit
be installed if the outboard is to be used
in turbid (muddy) water conditions.
3-19
62Y-9-18-4 5/2/01 3:12 PM Page 1
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EMK00010
Chapter 4
MAINTENANCE
SPECIFICATION DATA.............................4-1
TRANSPORTING AND STORING
OUTBOARD MOTOR ...............................4-3
Trailering outboard motor...................4-3
Storing outboard motor ......................4-4
PERIODIC MAINTENANCE......................4-8
Replacement parts ...............................4-8
Maintenance chart................................4-9
Greasing ..............................................4-10
Cleaning and adjusting spark plug...4-11
Checking fuel system.........................4-13
Inspecting fuel filter ...........................4-14
Adjusting idling speed.......................4-16
Changing engine oil ...........................4-17
Checking timing belt ..........................4-19
Replacing fuse ....................................4-20
Checking wiring and connectors ......4-20
Exhaust leakage..................................4-20
Water leakage .....................................4-20
Checking power trim and tilt system .4-21
Checking propeller .............................4-22
Changing gear oil ...............................4-24
Cleaning fuel tank...............................4-25
Inspecting and replacing anode(s) ...4-27
Checking battery.................................4-28
Checking bolts and nuts ....................4-31
Motor exterior.....................................4-31
Cleaning cooling-water passages....4-31
Coating the boat bottom ...................4-32
1
2
3
4
5
6
62Y-9-18-4 5/2/01 3:12 PM Page 2
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EMK10111*
SPECIFICATION DATA
Model
Item
Unit
F50TRA
DIMENSIONS
8Overall Length
8Overall Width
8Overall Height
8Transom height
8Weight
L
L
L
mm (in.)
mm (in.)
mm (in.)
mm (in.)
kg (lb.)
718 (28.3)
361 (14.2)
1,397 (55.0)
533 (21.0)
108 (238)
r/min
kW (HP)
r/min
5,000~6,000
36.8 (50.0) at 5,500 r/min
700~800
PERFORMANCE
8Full throttle operating range
8Maximum output
8Idling speed (in Neutral)
ENGINE
8Type
Displacement
Bore × stroke
8Valve clearance (cold engine)
IN
EX
8Ignition system
8Spark plug
Spark plug gap
8Control system
8Starting system
8Battery capacity
Minimum cold crank performance
Minimum reserve capacity
8Alternator output
8Starting carburetion system
cm3 (cu.in.)
mm (in.)
mm (in)
mm (in)
NGK
mm (in.)
V-AH
Amps at -17.8°C (0°F)
minutes at 26.7°C (80°F)
V-A (W)
4-stroke, L4
935 (57.1)
63.0 × 75.0 (2.48 × 2.95)
0.15~0.25 (0.006~0.010)
0.25~0.35 (0.010~0.014)
C.D.I system
DPR6EA-9
0.8 ~ 0.9 (0.031~0.035)
Remote control
Electric start
12-70 ~ 100
380
124
12-10
Prime start system
DRIVE UNIT
8Gear positions
Gear ratio
8Trim/tilt system
8Propeller mark
Forward-Neutral-Reverse
1.85 (13:24)
Power trim & tilt
G
FUEL AND OIL
8Fuel
Fuel tank capacity
8Recommended engine oil
Engine oil capacity (without oil filter)
Engine oil capacity (with oil filter)
8Recommended gear oil
Gear oil capacity
L (US gal, Imp gal)
API
SAE
L (US qt, Imp qt)
L (US qt, Imp qt)
cm3 (US oz, Imp oz)
Regular-unleaded gasoline
(P.O.N.: minimum 86)
—
4-stroke motor oil
SE, SF, SG, SH
10W-30, 10W-40, 20W-40
2.0 (2.1, 1.8)
2.2 (2.3, 1.9)
Hypoid gear oil (SAE90)
430 (14.5, 15.1)
TIGHTENING TORQUE
8Spark plug
8Propeller nut
8Engine oil drain bolt
8Engine oil filter
N•m (kgf•m,lb•ft)
N•m (kgf•m,lb•ft)
N•m (kgf•m,lb•ft)
N•m (kgf•m,lb•ft)
4-1
18 (1.8, 13)
35 (3.5, 25)
18 (1.8, 13)
18 (1.8, 13)
62Y-9-18-4 5/2/01 3:12 PM Page 3
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T50TRA
—
718 (28.3)
361 (14.2)
1,436 (56.5)
533 (21.0)
112 (247)
5,000~6,000
36.8 (50.0) at 5,500 r/min
900~1,000
4-stroke, L4
935 (57.1)
63.0 × 75.0 (2.48 × 2.95)
0.15~0.25 (0.006~0.010)
0.25~0.35 (0.010~0.014)
C.D.I system
DPR6EA-9
0.8 ~ 0.9 (0.031~0.035)
Remote control
Electric start
12-70 ~ 100
380
124
12-10
Prime start system
Forward-Neutral-Reverse
2.30 (13:30)
Power trim & tilt
K
Regular-unleaded gasoline
(P.O.N.: minimum 86)
—
4-stroke motor oil
SE, SF, SG, SH
10W-30, 10W-40, 20W-40
2.0 (2.1, 1.8)
2.2 (2.3, 1.9)
Hypoid gear oil (SAE90)
610 (20.6, 21.5)
18 (1.8, 13)
35 (3.5, 25)
18 (1.8, 13)
18 (1.8, 13)
4-2
—
62Y-9-18-4 5/2/01 3:12 PM Page 4
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EMU01369
TRANSPORTING AND
STORING
OUTBOARD MOTOR
w
Leaking fuel is a fire hazard. When transporting and storing the outboard motor,
close the air vent screw and fuel cock to
prevent fuel from leaking.
EMU00326
TRAILERING OUTBOARD MOTOR
The motor should be trailered and stored
in the normal running position. If there is
insufficient road clearance in this position,
then trailer the motor in the tilt position
using a motor support device such as a
transom saver bar.
For further details, consult your Yamaha
dealer.
w
8 Never get under the lower unit while it
is tilted, even if a motor support bar is
used. Severe injury could occur if the
outboard accidentally falls.
8 USE CARE when transporting fuel tank,
whether in a boat or car.
8 DO NOT fill fuel container to maximum
capacity. Gasoline will expand considerably as it warms up and can build up
pressure in the fuel container. This can
cause fuel leakage and a potential fire
hazard.
cC
Do not use the tilt support lever/knob
when trailering the boat. The outboard
motor could shake loose from the tilt
support and fall. If the motor can not be
trailered in the down position, use an
additional support device to secure it in
the up position.
4-3
62Y-9-18-4 5/2/01 3:12 PM Page 5
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EMK16210
STORING OUTBOARD MOTOR
When storing your Yamaha outboard for
prolonged periods of time, (2 months or
longer), several important procedures
must be performed to prevent expensive
damage.
It is advisable to have your outboard serviced by an authorized Yamaha dealer
prior to storage. However, the following
procedures can be performed by you, the
owner, with a minimum of tools.
1
cC
000940
2
8 To prevent problems which can be
caused by oil entering the cylinder from
the sump, keep the engine in the attitude shown when transporting and
storing it.
8 Do not place the engine on its side
before the cooling water has drained
from it completely, or water may enter
the cylinder through the exhaust port
and cause problems.
8 Store the engine in a dry, well-ventilated place, not in direct sunlight.
1 Vertical position
2 Horizontal position
102012
EMK21010
Filling Fuel Tank
Fill the fuel tank with fresh fuel and add
one ounce of “Yamaha Fuel Conditioner
and Stabilizer” (Part No. LUB-FUELC-1200) to each gallon of fuel.
NOTE:
The use of “Yamaha Fuel Conditioner and
Stabilizer” eliminates the need to drain
the fuel system. Consult your Yamaha
dealer or other qualified mechanic if the
fuel system is to be drained instead.
4-4
62Y-9-18-4 5/2/01 3:12 PM Page 6
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EMK22611
605014
Flushing Cooling System and Fogging
Engine
Cooling system flushing is essential to
prevent the cooling system from clogging
up with salt, sand, or dirt. In addition, fogging of the engine is mandatory to prevent expensive engine damage due to
rust. Perform the flushing and fogging at
the same time.
1) Remove the top cowling and the propeller.
2) Install a flushing attachment to the
lower unit.(Flushing attachment available from your Yamaha dealer).
cC
Avoid running the outboard at high
speed while on the flushing attachment,
or overheating could occur.
w
8 Do not touch or remove electrical parts
when starting or during operation.
8 Keep hands, hair and clothes away
from flywheel and other rotating parts
while engine is running.
3)
4)
5)
6)
4-5
Run the engine at a fast idle for 10~15
minutes.
Just prior to turning off the engine,
quickly spray “Yamaha Stor-Rite
Engine Fogging Oil” (Part No. LUBSTRRT-12-00) alternately into the
silencer cover. When properly done,
the engine will smoke excessively
and almost stall.
Remove the flushing attachment and
wipe off any excess water.
Install the top cowling and the propeller.
62Y-9-18-4 5/2/01 3:12 PM Page 7
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EMK26011
Lubrication
1) Remove the spark plugs, and spray a
10 second spray of Yamaha “StorRite Engine Fogging Oil” into each
cylinder. Grease the spark plug
threads and reinstall the spark plugs
and torque to proper specification.
(Refer to the “CLEANING AND
ADJUSTING SPARK PLUG”).
2) Turn the engine over with the stop
lanyard disconnected to work the fogging oil into the piston rings.
3) Change the lower unit oil. (Refer to
“CHANGING GEAR OIL”). Inspect the
oil for the presence of water which
indicates a leaky seal. Seal replacement should be performed by an
authorized Yamaha dealership prior
to use.
4) Grease all grease fittings. (Refer to
the “GREASING”)
EMK27011
Cleaning and Anti-corrosion Measure
1) Wash down the exterior of the outboard with fresh water and dry off
completely.
2) Spray the engine’s exterior with
“Yamaha Silicone Protectant” (Part
No. LUB-SILCNE-13-00).
3) Wax the cowling with a non-abrasive
wax such as “Yamaha Silicone Wax”
(Part No. ACC-11000-15-02).
4-6
62Y-9-18-4 5/2/01 3:12 PM Page 8
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EMK29010
Battery Care
w
Battery electrolyte is poisonous and dangerous, causing severe burns, etc. It contains sulfuric acid. Avoid contact with
skin, eyes, or clothing.
Antidote:
EXTERNAL; Flush with water.
INTERNAL; Drink large quantities of
water or milk. Follow with milk of magnesia, beaten egg, or vegetable oil. Call
physician immediately.
EYES; Flush with water for 15 minutes
and get prompt medical attention.
Batteries produce explosive gases: Keep
sparks, flame, cigarettes, etc. away. Ventilate when charging or using in a closed
space. Always wear eye protection when
working near batteries.
KEEP OUT OF REACH OF CHILDREN.
NOTE:
Batteries vary among manufacturers.
Therefore the following procedures may
not always apply. Consult your battery
manufacturer’s instructions.
1)
2)
3)
4)
4-7
Disconnect and remove the battery
from the boat. Always disconnect the
black negative lead first to prevent the
risk of shorting.
Clean the battery casing and terminals. Fill each cell to the upper level
with distilled water.
Store the battery on a level surface in
a cool, dry, well-ventilated place out
of direct sunlight.
Once a month, check the specific
gravity of the electrolyte and recharge
as required to prolong battery life.
62Y-9-18-4 5/2/01 3:12 PM Page 9
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EMU00913
PERIODIC MAINTENANCE
w
Be sure to turn off the engine when you
perform maintenance unless otherwise
specified. If the owner is not familiar with
machine servicing, this work should be
done by a Yamaha dealer or other qualified mechanic.
Maintenance, replacement, or repair of
the emission control devices and systems
may be performed by any marine engine
repair establishment or individual. All
warranty repairs, however, including
those to the emission control system,
must be performed by an authorized
Yamaha marine dealership.
A service manual is available for purchase
through a Yamaha dealer for owners who
have the mechanical skills, tools, and
other equipment necessary to perform
maintenance not covered by this owner’s
manual.
EMK33011
REPLACEMENT PARTS
If replacement parts are necessary, use
only genuine Yamaha parts or equivalents of the same type and of equivalent
strength and materials. Any part of inferior quality may malfunction, and the
resulting loss of control could endanger
the operator and passengers.
Yamaha genuine parts and accessories
are available from a Yamaha dealer.
4-8
62Y-9-18-4 5/2/01 3:12 PM Page 10
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EMK30510*
MAINTENANCE CHART
Frequency of maintenance operations may be adjusted according to the operating conditions, but the following table gives general guidelines.
The mark (●) indicates the check-ups which you may carry out yourself.
The mark (1) indicates work to be carried out by your Yamaha dealer.
Initial
Interval
10 hours
Item
Greasing points
Gear oil
Fuel system
Fuel filter
Fuel tank
Idling speed
Anode
Outboard motor exterior
Cooling water passages
Propeller
Timing belt
Cleaning/Adjustment/
Replacement
Greasing
Change
Inspection
Inspection/Replacement
Cleaning
Adjustment
Inspection/Replacement
Inspection
Cleaning
Inspection
Inspection
Battery
Inspection
Power trim and tilt
Ignition timing
Bolts and nuts
Engine oil
Oil filter
Valve clearance
Thermostat
Inspection
Inspection/Adjustment
Retightening
Change
Change
Inspection/Adjustment
Inspection
Spark plug
●
Every
50 hours 100 hours 200 hours
(3 months) (6 months) (1 year)
●
●
4-11
●
●
●
●
●
4-10
4-24
4-13
4-14
4-25
4-16
4-27
4-31
4-5
4-22
4-19
●
●
●
●
● (every
month)
●
1
1
●
1
●
●
●
●
1
●
●
●
1
●
●
4-28
1
1
●
1
1
Refer
page
1
1
4-21
—
4-31
4-17
—
—
—
NOTE:
8 When operating in salt water, turbid or muddy water, the engine should be flushed
with clean water after each use.
8 If leaded gasoline is usually used, engine valves and related parts should be inspected after every 300 hours of operation in addition to the items on the maintenance
chart above.
4-9
62Y-9-18-4 5/2/01 3:12 PM Page 11
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EMU00366
GREASING
Yamaha marine grease
(Water resistant grease)
000567
4-10
62Y-9-18-4 5/2/01 3:12 PM Page 12
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EMU01202
CLEANING AND ADJUSTING SPARK
PLUG
w
When removing or installing a spark plug,
be careful not to damage the insulator. A
damaged insulator could allow external
sparks, which could lead to explosion or
fire.
The spark plug is an important engine
component and is easy to inspect. The
condition of the spark plug can indicate
something about the condition of the
engine. For example, if the center electrode porcelain is very white, this could
indicate an intake air leak or carburetion
problem in that cylinder. Do not attempt
to diagnose any problems yourself.
Instead, take the outboard motor to a
Yamaha dealer. You should periodically
remove and inspect the spark plug
because heat and deposits will cause the
spark plug to slowly break down and
erode. If electrode erosion becomes
excessive, or if carbon and other deposits
are excessive, you should replace the
spark plug with another of the correct
type.
Standard spark plug:
Refer to “SPECIFICATIONS”, page 4-1.
Before fitting the spark plug, measure the
electrode gap with a wire thickness
gauge; adjust the gap to specification if
necessary.
Spark plug gap:
Refer to “SPECIFICATIONS”, page 4-1.
4-11
62Y-9-18-4 5/2/01 3:12 PM Page 13
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When fitting the plug, always clean the
gasket surface and use a new gasket.
Wipe off any dirt from the threads and
screw in the spark plug to the correct
torque.
Spark plug torque:
Refer to “SPECIFICATIONS”, page 4-1.
NOTE:
If a torque-wrench is not available when
you are fitting a spark plug, a good estimate of the correct torque is 1/4 to 1/2 a
turn past finger-tight. Have the spark plug
adjusted to the correct torque as soon as
possible with a torque-wrench.
Initial of spark
plug I.D. mark
Plug wrench size
B
21 mm (13/16 in.)
C/BK
16 mm (5/8 in.)
D
18.3 mm (23/32 in.)
1 Spark plug gap
2 Spark plug I.D. mark (NGK)
w
q
903022
4-12
62Y-9-18-4 5/2/01 3:12 PM Page 14
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EMK38010
CHECKING FUEL SYSTEM
w
Gasoline (petrol) and its vapors are highly
flammable and explosive. Keep away
from sparks, cigarettes, flames or other
sources of ignition.
Check the fuel line for leaks, cracks, or
malfunctions. If any problem is found, it
should be repaired immediately by Yamaha dealer or other qualified mechanic.
Checking points
8 Fuel system parts leakage.
8 Fuel hose joint leakage.
8 Fuel hose cracks or other damage.
8 Fuel connector leakage.
000972
w
Leaking fuel can result in fire or explosion.
8 Check for fuel leakage regularly.
8 If any fuel leakage is found, the fuel
system must be repaired by a qualified
mechanic. Improper repairs can make
the outboard unsafe to operate.
4-13
62Y-9-18-4 5/2/01 3:12 PM Page 15
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EMU00370
INSPECTING FUEL FILTER
w
Gasoline (petrol) is highly flammable, and
its vapors are flammable and explosive.
8 If you have any question about properly
doing this procedure, consult your
Yamaha dealer.
8 Do not perform this procedure on a hot
or running engine. Allow the engine to
cool.
8 There will be fuel in the fuel filter. Keep
away from sparks, cigarettes, flames or
other sources of ignition.
8 This procedure will allow some fuel to
spill. Catch fuel in a rag. Wipe up any
spilled fuel immediately.
8 The fuel filter must be reassembled
carefully with O-ring, filter cup, and
hoses in place. Improper assembly or
replacement can result in a fuel leak,
which could result in a fire or explosion
hazard.
EMU00978
F50
1)
2)
207011
3)
w
r
e
4)
q
000983
4-14
Remove the nut holding the fuel filter
assembly if equipped.
Unscrew the filter cup 1, catching
any spilled fuel in a rag.
Remove the filter element 2, and
wash it in solvent.
Allow it to dry. Inspect the filter element and O-ring 3 to make sure they
are in good condition. Replace them if
necessary.
Reinstall the filter element in the cup.
Make sure the O-ring in position in
the cup. Firmly screw the cup onto
the filter housing 4.
62Y-9-18-4 5/2/01 3:12 PM Page 16
E
5)
6)
Attach the filter assembly to the
bracket with that the fuel hoses are
attached to the filter assembly.
Run the engine and check the filter
and lines for leaks.
EMU01282
T50
NOTE:
If any water is in the fuel, the float will
rise. If so, remove the cup and drain the
water.
1)
000960
2)
r
3)
w
e
t
4)
q
000309
5)
6)
4-15
Remove the nut holding the fuel filter
assembly if so equipped.
Unscrew the filter cup 1, catching
any spilled fuel in a rag.
Remove the filter element 2, and
wash it in solvent.
Allow it to dry. Inspect the filter element and O-ring 3 to make sure they
are in good condition. Replace them if
necessary.
Reinstall the filter element in the cup.
Make sure the O-ring is in proper
position in the cup. Firmly screw the
cup onto the filter housing 4.
Attach the filter assembly to the
bracket.
Run the engine and check the filter
and lines for leaks.
62Y-9-18-4 5/2/01 3:12 PM Page 17
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EMU00376
ADJUSTING IDLING SPEED
w
8 Do not touch or remove electrical parts
when starting or during operation.
8 Keep hands, hair and clothes away
from flywheel and other rotating parts
while engine is running.
cC
This procedure must be performed while
the outboard motor is in the water. A
flushing attachment or test tank can be
used.
A diagnostic tachometer should be used
for this procedure.
1) Start the engine and allow it to warm
up fully in Neutral until it is running
smoothly. If the outboard is mounted
on a boat, be sure the boat is tightly
moored.
2) Adjust the throttle stop-screw to set
the idling speed to specification (see
“SPECIFICATIONS”) by turning the
stop-screw clockwise to increase the
idling speed, and turning it counterclockwise to decrease the idling
speed.
NOTE:
Correct idling-speed adjustment is only
possible if the engine is fully warmed-up.
If not warmed up fully, the speed setting
will tend to be too high. If you have difficulty obtaining the specified idle, consult
a Yamaha dealer or other qualified
mechanic.
q
1 Throttle stop-screw
000204
4-16
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EMU01415
CHANGING ENGINE OIL
w
8 Avoid draining the engine oil immediately after stopping the engine. The oil
is hot and should be handled with care
to avoid burns.
8 Be sure the outboard is securely fastened to the transom or a stable stand.
cC
8 Change the engine oil after the first 10
hours of operation, and every 100 hours
or at 6-month intervals thereafter. Otherwise, the engine will wear quickly.
8 Do not overfill the oil, and be sure the
engine is in an upright position (not tilted) when checking and changing the
engine oil.
8 If the oil level is above the upper level
mark, drain until the level meets the
specified capacity. Overfilling the oil
may cause leakage or damage.
1)
2)
000940
3)
Put the outboard motor in an upright
position (not tilted).
Prepare a suitable container which
can hold a larger amount than the
engine oil capacity. Loosen and
remove the drain bolt 1 while holding the container under the drain
hole. Let the oil drain completely.
Wipe up any spilled oil immediately.
Put a new gasket on the drain bolt.
Apply a light coat of oil to the gasket
and reinstall the drain bolt.
Tightening torque:
Refer to “SPECIFICATIONS”, page 4-1.
q
601013*
4-17
62Y-9-18-4 5/2/01 3:12 PM Page 19
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NOTE:
If a torque wrench is not available when
you are installing the drain plug, finger
tighten the bolt just until the gasket
comes into contact with the surface of the
drain hole. Then tighten 1/4 - 1/2 turn.
Have the drain plug torqued to the correct
value with a torque wrench as soon as
possible.
4)
w
Remove the oil filler cap 2. Add the
correct amount of oil through the
filler hole.
Reinstall the filler cap.
Engine oil grade/capacity:
Refer to “SPECIFICATIONS”, page 4-1.
5)
203011
Start the engine and watch to make
sure the low oil pressure warning
lamp turns off. Make sure that there
are no oil leaks.
cC
If the oil lamp does not turn off, or if
there are oil leaks, stop the engine and
find the cause. Continued operation with
a problem could cause severe engine
damage. If the problem cannot be found
and corrected, consult your Yamaha dealer.
4-18
62Y-9-18-4 5/2/01 3:12 PM Page 20
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6)
201012
Turn off the engine and wait 3 minutes. Recheck the oil level using the
dipstick to be sure the level falls
between the upper and lower marks.
Fill with oil if it is below the lower
mark, or drain to the specified level if
it is above the upper mark.
7) Dispose of used oil according to local
regulations.
NOTE:
8 For disposal of used oil consult your
Yamaha dealer.
8 The oil should be changed more often
when the engine is operated under
adverse conditions such as extended
trolling.
EMK74111
CHECKING TIMING BELT
206011*
Inspect the timing-belt and replace it if
any of the following signs is observed:
8 Cracks in the back of the belt or in the
base of belt teeth.
8 Excessive wear at the roots of cogs.
8 Rubber portion swollen by oil.
8 Belt surfaces roughened.
8 Signs of wear on edges or outer surface
of belt.
NOTE:
If the timing belt can be stretched by 10
mm (0.39 in) or more by pushing with
your finger in the middle between the pulleys, the belt tension needs adjust.
cC
Consult your Yamaha dealer when replacing or adjusting the timing-belt.
4-19
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EMU01329*
REPLACING FUSE
If the fuse has blown on an Electric start
model, open the fuse holder and replace
the fuse with a new one of proper amperage.
w
Be sure to use the specified fuse. An
incorrect fuse or a piece of wire may
allow excessive current flow. This could
cause electrical system damage and a fire
hazard.
NOTE:
If the new fuse blows again immediately,
consult a Yamaha dealer.
q
e
w
000539
1 Fuse holder
2 Fuse (20A)
3 Spare fuse (20A)
EMK78010
CHECKING WIRING AND
CONNECTORS
1)
2)
Check that each grounding wire is
properly secured.
Check that each connector is engaged
securely.
EXHAUST LEAKAGE
Start the engine and check that no
exhaust leaks from the joints between the
exhaust cover, cylinder head and crank
case.
WATER LEAKAGE
Start the engine and check that no water
leaks from the joints between the exhaust
cover, cylinder head and crank case.
4-20
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EMU00992
CHECKING POWER TRIM AND TILT
SYSTEM
w
8 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 accidentally falls.
8 Make sure no one is under the outboard before performing this test.
1)
q
000965
Check the power trim and tilt unit for
any sign of oil leaks.
2) Operate each of the power trim and
tilt switches on remote control and
engine bottom cowling (If equipped)
to check that all switches work.
3) Tilt up the motor and check that the
trim and tilt rod 1 is pushed out completely.
4) Check that the trim and tilt rod is free
of corrosion or other flaws.
5) Operate the motor to trim and tilt
down. Check that the trim and tilt rod
operates smoothly.
NOTE:
If any operation is abnormal, consult a
Yamaha dealer.
Recommended fluid:
Yamaha power trim & tilt fluid or
ATF (DEXRON-II)
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EML08011
CHECKING PROPELLER
w
000964
602051
You could be seriously injured if the
engine accidentally starts while you are
near the propeller.
8 Before
inspecting,
removing
or
installing the propeller, remove the
spark plug caps from the spark plugs.
Also, put the shift control in Neutral,
put the main switch in the “OFF” position and remove the key, and remove
the lanyard from the engine stop
switch. Turn off the battery cut-off
switch if your boat has one.
8 Do not use your hand to hold the propeller when loosening or tightening the
propeller nut. Put a wood block
between the cavitation plate and the
propeller to prevent the propeller from
turning.
1)
2)
3)
602054
Check each of the propeller blades for
wear, erosion from cavitation or ventilation, or other damage.
Check the splines for wear and damage.
Check for fish line winding around the
propeller shaft. Check the propeller
shaft oil seal for damage.
EMU00976
1
3
2
4
6
5
Removing the Propeller
1) Straighten the cotter-pin 1 and pull it
out using a pair of pliers.
2) Remove the propeller nut 2, washer
3 and spacer 4.
3) Remove the propeller 5 and thrust
washer 6.
602041*
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EMU00397
Installing the Propeller
cC
8 Be sure to install the thrust washer
before installing propeller, otherwise,
lower case and propeller boss may be
damaged.
8 Be sure to use a new cotter pin and
bend the ends over securely. Otherwise, the propeller could come off during operation and be lost.
1)
2)
3)
Apply Yamaha Marine grease or Corrosion resistant grease to the propeller-shaft.
Install the thrust washer and propeller
on the propeller-shaft.
Install the spacer and washer. Tighten
the propeller nut to the specified
torque.
Tightening torque:
Refer to “SPECIFICATIONS” page 4-1.
4)
602053
Align the propeller nut with the propeller shaft hole. Insert a new cotter
pin in the hole and bend the cotter pin
ends.
NOTE:
If the propeller nut does not align with the
propeller shaft hole after tightening to the
specified torque, then tighten the nut further to align it with the hole.
4-23
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EMU00905*
CHANGING GEAR OIL
w
8 Be sure the outboard is securely fastened to the transom or a stable stand.
You could be severely injured if the outboard falls on you.
8 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 accidentally falls.
1)
w
q
000565
Place a suitable container under the
gear-case.
2) Remove the oil drain plug 1.
NOTE:
The oil drain plug is magnetic. Remove all
metal particles from the plug before reinstalling it.
3)
Remove the oil level plug 2 to allow
the oil to drain completely.
cC
Inspect the used oil after it has been
drained. If the oil is milky, water is getting into the gear-case which can cause
gear damage. Consult a Yamaha dealer
for repair of the lower unit seals.
NOTE:
For disposal of used oil consult your
Yamaha dealer.
4-24
62Y-9-18-4 5/2/01 3:12 PM Page 26
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4)
w
q
000566
With the outboard motor in an vertical position, using a flexible or pressurized filling device, inject the gear
oil into the oil drain plug hole.
Gear oil grade/capacity:
Refer to SPECIFICATIONS on page 4-1.
5)
6)
When the oil begins to flow out of the
oil level plug hole, insert and tighten
the oil level plug 2.
Insert and tighten the oil drain plug
1.
EML22011
CLEANING FUEL TANK
w
Gasoline (petrol) is highly flammable, and
its vapors are flammable and explosive.
8 If you have any question about properly
doing this procedure, consult your
Yamaha dealer.
8 Keep away from sparks, cigarettes,
flames or other sources of ignition
when cleaning the fuel tank.
8 Remove the fuel tank from the boat
before cleaning it. Work only outdoors
in an area with good ventilation.
8 Wipe up any spilled fuel immediately.
8 Reassemble the fuel tank carefully.
Improper assembly can result in a fuel
leak, which could result in a fire or
explosion hazard.
8 Dispose of old gasoline (petrol)according to local regulations.
4-25
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To clean the fuel tank
1) Empty the fuel tank into an approved
gasoline (petrol) container.
2) Pour a small amount of suitable solvent in the tank. Reinstall the cap and
shake the tank. Drain the solvent
completely.
To clean the fuel filter
1) Remove the screws holding the fuel
hose joint assembly . Pull the assembly out of the tank.
2) Clean the filter (located on the end of
the suction pipe) in a suitable cleaning solvent. Allow the filter to dry.
3) Replace the gasket with a new one.
Reinstall the fuel hose joint assembly
and tighten the screws firmly.
902054
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EMU00831
INSPECTING AND REPLACING
ANODE(S)
000982
Yamaha outboard motor is protected
from corrosion by a sacrificial anode(s).
Check the anode(s) periodically. Remove
the scales from surfaces of the anode(s).
For the inspection and replacement of the
anode(s), consult a Yamaha dealer.
cC
Do not paint the anode(s), for this would
render it ineffective.
000553
000205
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EML26010
CHECKING BATTERY (for Electric
start model)
w
Battery electrolytic fluid is dangerous; it
contains sulfuric acid and therefore is poisonous and highly caustic.
Always follow these preventive measures:
8 Avoid bodily contact with electrolytic
fluid as it can cause severe burns or
permanent eye injury.
8 Wear protective eye gear when handling or working near batteries.
Antidote (EXTERNAL):
8 SKIN - Flush with water.
8 EYES - Flush with water for 15 minutes
and get immediate medical attention.
Antidote (INTERNAL):
8 Drink large quantities of water or milk
followed by milk of magnesia, beaten
egg, or vegetable oil. Get immediate
medical attention.
Batteries also generate explosive
hydrogen gas; therefore, you should
always follow these preventive measures:
8 Charge batteries in a well-ventilated
area.
8 Keep batteries away from fire, sparks,
or open flames (e.g., welding equipment, lighted cigarettes, etc.).
8 DO NOT SMOKE when charging or handling batteries.
8 KEEP BATTERIES AND ELECTROLYTIC
FLUID OUT OF REACH OF CHILDREN.
4-28
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cC
A poorly maintained battery will quickly
deteriorate.
EL
LEV EL
ER
V
UPP ER LE
W
LO
1)
901015
Check the electrolyte level at least
once a month. Fill to the manufacturer’s recommended level when necessary. Top up only with distilled water
(or pure de-ionized water suitable to
use in batteries).
cC
Ordinary tap-water contains minerals
harmhul to a battery, and should not be
used for topping-up.
2)
3)
4-29
Keep the battery always in a good
state of charge. Installing a voltmeter
will help you monitor your battery. If
you will not use the boat for a month
or more, remove the battery from the
boat and store it in a cool, dark place.
Completely recharge the battery
before using it.
If the battery will be stored for longer
than a month, check the specific gravity of the fluid at least once a month
and recharge the battery when it is
low.
62Y-9-18-4 5/2/01 3:12 PM Page 31
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EMU01279
Connecting the Battery
w
Mount the battery holder securely in a
dry, well-ventilated, vibration-free location in the boat. Install a fully charged
battery in the holder.
cC
q
EL
LEV EL
ER
V
UPP ER LE
LOW
8 Make sure the main switch (on applicable models) is “OFF” before working on
the battery.
8 Reversal of the battery leads will damage the rectifier.
8 Connect the RED lead first when
installing the battery and disconnect
the RED lead last when removing it.
Otherwise, the electrical system can be
damaged.
8 The electrical contacts of the battery
and cables must be clean and properly
connected, or the battery will not start
the engine.
Connect the RED lead to the POSITIVE (+)
terminal first.
Then connect the BLACK lead to the NEGATIVE (-) terminal.
w
e
901012
1 Red lead
2 Black lead
3 Battery
EMU01280
Disconnecting the Battery
Disconnect the BLACK lead from the NEGATIVE (-) terminal first. Then disconnect
the RED lead from the POSITIVE (+) terminal.
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EML40010
CHECKING BOLTS AND NUTS
1)
2)
Check that bolts securing the cylinder
head and engine and the nut securing
the flywheel are tightened with their
specified tightening torques.
Check the tightening torques of other
bolts and nuts.
EMU00409
MOTOR EXTERIOR
EMU00410
Cleaning the Outboard Motor
After use, wash the exterior of the outboard with fresh water.
Flush the cooling system with fresh
water.
NOTE:
Refer to Flushing Cooling System instructions in “TRANSPORTING AND STORING
OUTBOARD MOTOR”.
102024
EMU01172
CLEANING COOLING-WATER
PASSAGES
q
Flushing device equipped model
e
w
000846
Perform this procedure right after operation for the most thorough flushing.
1) After shutting off the engine, unscrew
the garden-hose connector 2 from
the fitting 1 on the bottom cowling.
2) Screw the garden-hose connector 2
onto a garden hose 3 which is connected to a fresh-water supply.
3) With the engine off, turn on the water
tap and let the water flush through
the cooling passages for about 15
minutes. Turn off the water and disconnect the garden hose 3.
4) When flushing is complete, reinstall
the garden-hose connector 2 on the
fitting 1 on the bottom cowling.
Tighten the connector securely.
4-31
62Y-9-18-4 5/2/01 3:12 PM Page 33
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cC
Do not leave the garden-hose connector
loose on the bottom cowling fitting or let
the hose hang free during normal operation. Water will leak out of the connector
instead of cooling the engine, which can
cause serious overheating. Be sure the
connector is tightened securely on the fitting after flushing the engine.
NOTE:
8 When flushing the engine with the boat
in the water, tilting up the engine until it
is completely out of the water will
achieve better results.
8 Refer to cooling system flushing
instructions in “TRANSPORTING AND
STORING OUTBOARD MOTOR”.
EMU00412
Checking Painted Surface of Motor
Check the motor for scratches, nicks, or
flaking paint. Areas with damaged paint
are more likely to corrode. If necessary,
clean and paint the areas. A touch-up
paint is available from a Yamaha dealer.
EMU00413
COATING THE BOAT BOTTOM
102025
A clean hull improves boat performance.
The boat bottom should be kept as clean
of marine growths as possible. If necessary, the boat bottom can be coated with
an anti-fouling paint approved for your
area to inhibit marine growth.
Do not use anti-fouling paint which
includes copper or graphite. These paints
can cause more rapid engine corrosion.
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-MEMO-
62Y-9-18-5
5/16/01 10:27 AM
Page 1
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EMN00010
Chapter 5
TROUBLE RECOVERY
TROUBLESHOOTING ..............................5-1
TEMPORARY ACTION IN
EMERGENCY ............................................5-5
Impact damage.....................................5-5
Power trim/tilt will not operate ...........5-5
Starter will not operate ........................5-6
Engine fails to operate .........................5-8
Treatment of submerged motor .........5-9
1
2
3
4
5
6
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Page 2
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EMU01204¯
TROUBLESHOOTING
A problem in the fuel, compression, or ignition systems can cause poor starting, loss of
power, or other problems. The troubleshooting chart describes basic checks and possible remedies. (This chart covers all Yamaha outboard motors. Therefore, some items
may not apply to your model.)
If your outboard motor requires repair, bring it to a Yamaha dealer.
Trouble
Possible Cause
1. Battery capacity weak or low.
2. Battery connections loose or
corroded.
3. Fuse for electric start circuit blown.
A. Starter will not
operate.
4. Starter components faulty.
5. Engine stop switch lanyard not
attached.
6. Shift lever in gear.
1.
2.
3.
4.
B. Engine will not
start (Starter
operates).
Fuel tank empty.
Fuel contaminated or stale.
Fuel filter clogged.
Starting procedure incorrect.
Remedy
1. Check battery condition. Use
battery of recommended capacity.
2. Tighten battery cables and clean
battery terminals.
3. Check for cause of electric
overload and repair. Replace fuse
with one of correct amperage.
4. Have serviced by a Yamaha
dealer.
5. Attach lanyard.
6. Shift to neutral.
1.
2.
3.
4.
5. Fuel pump malfunctions.
5.
6. Spark plug(s) fouled or incorrect
type.
7. Spark plug cap(s) fitted incorrectly.
8. Poor connections or damaged
ignition wiring.
6.
9. Ignition parts faulty.
9.
10. Engine stop switch lanyard not
attached.
11. Shift lever in gear.
12. Engine inner parts damaged.
5-1
7.
8.
10.
Fill tank with clean, fresh fuel.
Fill tank with clean, fresh fuel.
Clean or replace filter.
Read "STARTING ENGINE"
section.
Have serviced by a Yamaha
dealer.
Inspect spark plug(s). Clean or
replace with recommended type.
Check and re-fit cap(s).
Check wires for wear or breaks.
Tighten all loose connections.
Replace worn or broken wires.
Have serviced by a Yamaha
dealer.
Attach lanyard.
11. Shift to neutral.
12. Have serviced by a Yamaha
dealer.
62Y-9-18-5
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Page 3
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Trouble
Possible Cause
1. Spark plug(s) fouled or incorrect
type.
2. Fuel system obstructed.
3. Fuel contaminated or stale.
4. Fuel filter clogged.
5. Failed ignition parts.
6. Warning system activated.
7. Spark plug gap incorrect.
8. Poor connections or damaged
ignition wiring.
C. Engine idles
irregularly or stalls.
9. Specified engine oil not used.
10. Thermostat faulty or clogged.
11. Carburetor adjustments incorrect.
12. Fuel pump damaged.
13. Air vent screw on the fuel tank
closed.
14. Motor angle too high.
15. Carburetor clogged.
16. Fuel joint connection incorrect.
17. Throttle valve adjustment incorrect.
18. Battery lead disconnected.
5-2
Remedy
1. Inspect spark plug(s). Clean or
replace with recommended type.
2. Check for pinched or kinked fuel
line or other obstructions in fuel
system.
3. Fill tank with clean, fresh fuel.
4. Clean or replace filter.
5. Have serviced by a Yamaha
dealer.
6. Find and correct cause of warning.
7. Inspect and adjust as specified.
8. Check wires for wear or breaks.
Tighten all loose connections.
Replace worn or broken wires.
9. Check and replace oil as specified.
10. Have serviced by a Yamaha
dealer.
11. Have serviced by a Yamaha
dealer.
12. Have serviced by a Yamaha
dealer.
13. Open the air vent screw.
14. Return to normal operating
position.
15. Have serviced by a Yamaha
dealer.
16. Connect correctly.
17. Have serviced by a Yamaha
dealer.
18. Connect securely.
62Y-9-18-5
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Page 4
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Trouble
Possible Cause
1. Cooling system clogged.
2. Engine oil level low.
3. Heat range of spark plug incorrect.
4. Specified engine oil not used.
D. Warning buzzer
sounds or
indicator lamp
lights.
5. Engine oil contaminated or
deteriorated.
6. Oil filter clogged.
7. Oil feed/injection pump
malfunctions.
8. Load on boat improperly distributed.
9. Water pump/thermostat faulty.
1. Propeller damaged.
2. Propeller pitch or diameter incorrect.
3. Trim angle incorrect.
E. Engine power loss.
4. Motor mounted at incorrect height
on transom.
5. Warning system activated.
6. Boat bottom fouled with marine
growth.
7. Spark plug(s) fouled or incorrect
type.
8. Weeds or other foreign matter
tangled on gear housing.
9. Fuel system obstructed.
10. Fuel filter clogged.
11. Fuel contaminated or stale.
12. Spark plug gap incorrect.
5-3
Remedy
1. Check water intake for restriction.
2. Fill oil tank with specified engine
oil.
3. Inspect spark plug and replace it
with recommended type.
4. Check and replace oil with
specified type.
5. Replace oil with fresh, specified
type.
6. Have serviced by a Yamaha
dealer.
7. Have serviced by a Yamaha
dealer.
8. Distribute load to place boat on an
even plane.
9. Have serviced by a Yamaha
dealer.
1. Have propeller repaired or
replaced.
2. Install correct propeller to operate
outboard at its recommended
speed (r/min) range.
3. Adjust trim angle to achieve most
efficient operation.
4. Have motor adjusted to proper
transom height.
5. Find and correct cause of warning.
6. Clean boat bottom.
7. Inspect spark plug(s). Clean or
replace with recommended type.
8. Remove foreign matter and clean
lower unit.
9. Check for pinched or kinked fuel
line or other obstructions in fuel
system.
10. Clean or replace filter.
11. Fill tank with clean, fresh fuel.
12. Inspect and adjust as specified.
62Y-9-18-5
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Page 5
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Trouble
Possible Cause
13. Poor connections or damaged
ignition wiring.
14. Failed ignition parts.
15. Specified engine oil not used.
16. Thermostat faulty or clogged.
E. Engine power loss.
17. Air vent screw closed.
18. Fuel pump damaged.
19. Fuel joint connection incorrect.
20. Heat range of spark plug incorrect.
21. Engine not responding properly to
shift lever position.
1. Propeller damaged.
2. Propeller shaft damaged.
F. Engine vibrates
excessively.
3. Weeds or other foreign matter
tangled on propeller.
4. Motor mounting bolt loose.
5. Steering pivot loose or damaged.
5-4
Remedy
13. Check wires for wear or breaks.
Tighten all loose connections.
Replace worn or broken wires.
14. Have serviced by a Yamaha
dealer.
15. Check and replace oil with
specified type.
16. Have serviced by a Yamaha
dealer.
17. Open the air vent screw.
18. Have serviced by a Yamaha
dealer.
19. Connect correctly.
20. Inspect spark plug and replace it
with recommended type.
21. Have serviced by a Yamaha
dealer.
1. Have propeller repaired or
replaced.
2. Have serviced by a Yamaha
dealer.
3. Remove and clean propeller.
4. Tighten bolt.
5. Tighten or have serviced by a
Yamaha dealer.
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Page 6
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EMN20010
TEMPORARY ACTION IN
EMERGENCY
EMH80010
IMPACT DAMAGE
w
The outboard motor can be seriously
damaged by a collision while operating
or trailering. Damage could make the outboard motor unsafe to operate.
607011
If the outboard motor hits any object in
the water, follow the procedure below;
1) Stop the engine immediately.
2) Inspect control system and all components for damage. Also, inspect the
boat damage.
3) However damage is found or not
found, go back to a nearest harbor
slowly and carefully.
4) Have a Yamaha dealer inspection of
the outboard motor, before operating
it again.
EMG65110
POWER TRIM / TILT WILL NOT OPERATE
If the engine cannot be tilted up or down
with the power trim and tilt because of a
discharged battery or a failure with the
power trim and tilt unit, the engine can be
tilted manually. Loosen the manual valve
screw counterclockwise until it stops. Put
the engine in the desired position, then
tighten the manual valve screw clockwise.
q
000961
1 Manual valve screw
5-5
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Page 7
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EMN30611
STARTER WILL NOT OPERATE
If the starter mechanism does not operate
(engine cannot be cranked with the
starter), the engine can be started with an
emergency starter rope.
w
8 Use this procedure only in an emergency and only to return to port for
repairs.
8 When the emergency starter rope is
used to start the engine, the start-ingear protection device does not operate. Make sure the transmission is in
neutral. Otherwise, the boat could
unexpectedly start to move, which
could result in an accident.
8 Be sure no one is standing behind you
when pulling the starter rope. It could
whip behind you and injure someone.
8 An unguarded rotating flywheel is very
dangerous. Keep loose clothing and
other objects away when starting the
engine. Use the emergency starter rope
only as instructed. Do not touch the flywheel or other moving parts when the
engine is running. Do not install the
starter mechanism or top cowling after
the engine is running.
8 Do not touch the ignition coil, high
voltage wire, spark plug cap or other
electrical components when starting of
operating the motor. You could be
shocked.
5-6
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E
EMU00429
Emergency Starting Engine
1) Remove the top cowling.
301011
2)
Remove the flywheel cover upward.
3)
Prepare the engine for starting. See
“STARTING ENGINE” for procedures.
Be sure the engine is in Neutral and
that the lanyard is attached to the
engine stop lanyard switch. The main
switch must be “ON”.
Insert the knotted end of the emergency starter rope into the notch in
the flywheel rotor and wind the rope
several turns clockwise.
208013
OFF ON START
4)
701024
5)
Pull the rope slowly until resistance is
felt.
6) Give a strong pull straight out to
crank and start the engine. Repeat if
necessary.
NOTE:
Refer to “ENGINE FAILS TO OPERATE”
for cold engine starting procedures.
208015
5-7
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E
EMU00434
N
ENGINE FAILS TO OPERATE
EMU00442
701014
ON
START
Cold Engine Fails to Start
1) Place the gear shift lever / remote
control lever in the neutral position.
2) Open the throttle halfway (on models
with neutral throttle-limiter, open
throttle as far as it will go).
3)
4)
5)
000978
5-8
Start the engine.
If the engine still will not start, open
and close the throttle two or three
times to feed additional fuel to the
intake manifold by the accelerator
pump of the carburetor.
Then open the throttle halfway and
start the engine.
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E
EMU00446
TREATMENT OF SUBMERGED
MOTOR
000526
If the outboard motor is submerged,
immediately take it a Yamaha dealer. Otherwise, some corrosion may begin almost
immediately.
If you cannot immediately take the outboard motor to a Yamaha dealer, follow
the procedure bellow for taking care to
minimize engine damage.
EMU00448
1)
2)
3)
000549
4)
Thoroughly wash away mud, salt,
seaweed, etc. with fresh water.
Remove the spark plug(s), then face
the spark plug holes downward to
allow any water, mud or contaminants to drain.
Drain the fuel from the carburetor,
fuel filter and fuel line. Drain the
engine oil completely.
Fill the sump with the fresh engine oil
as the same quantity as the engine oil
capacity.
Engine oil capacity:
Refer to SPECIFICATIONS, Page 4-1.
5)
000299
6)
Feed engine fogging oil or engine oil
through the carburetor(s) and spark
plug hole(s) while cranking the
engine with the manual starter or
emergency starter rope.
Take the outboard motor to a Yamaha
dealer as soon as possible.
cC
Do not attempt to run the motor until it
has been completely inspected.
5-9
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Page 1
E
EMP00010
Chapter 6
INDEX
INDEX........................................................6-1
1
2
3
4
5
6
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E
EMP10010
INDEX
A
Adjusting idling speed ..........................4-16
Adjusting trim angle..............................3-15
Air vent screw...........................................2-2
B
Basic boating rules ..................................1-7
Battery care...............................................4-7
Battery requirement ..............................1-14
Breaking in (running in) engine..............3-7
C
Changing engine oil ..............................4-17
Changing gear oil...................................4-24
Checking battery ....................................4-28
Checking bolts and nuts........................4-31
Checking fuel system ............................4-13
Checking painted surface of motor......4-32
Checking power trim and tilt system...4-21
Checking propeller.................................4-22
Checking the engine oil level..................3-6
Checking timming belt ..........................4-19
Checking wiring and connectors..........4-20
Cleaning and adjusting spark plug ......4-11
Cleaning and anti-corrosion measure ...4-6
Cleaning cooling-water passages ........4-31
Cleaning fuel tank ..................................4-25
Cleaning the outboard motor ...............4-31
Coating the boat bottom .......................4-32
Cold engine fails to start .........................5-8
Connecting the battery..........................4-30
Cruising in other conditions .................3-19
Cruising in salt water.............................3-19
Cruising in turbid water ........................3-19
D
Digital tachometer ...................................2-9
Disconnecting the battery.....................4-30
E
Emission control information.................1-2
Engine fails to operate.............................5-8
Engine stop lanyard switch.....................2-5
Engine oil ................................................1-13
Exhaust leakage .....................................4-20
F
Filling fuel .................................................3-4
Filling fuel tank .........................................4-4
Flushing cooling system and
fogging engine .........................................4-5
Flushing device ......................................2-12
Forward...................................................3-12
Fueling instructions ...............................1-11
Fuel hose joint ..........................................2-2
Fuel meter.................................................2-2
Fuel tank cap.............................................2-2
Fuel tank....................................................2-2
G
Gasoline (Petrol) ....................................1-11
Greasing..................................................4-10
H
Hour meter..............................................2-10
I
Identification numbers records ..............1-1
Impact damage ........................................5-5
Important labels .......................................1-6
Index..........................................................6-1
Inspecting and replacing anode(s).......4-27
Inspecting fuel filter ...............................4-14
Installation ................................................3-1
K
Key number ..............................................1-1
L
Lubrication................................................4-6
Low oil pressure warning .....................2-14
Low oil pressure warning indicator .....2-11
M
Main components....................................2-1
Main switch ..............................................2-4
Maintenance chart ...................................4-9
Motor exterior ........................................4-31
Mounting height ......................................3-3
Mounting the outboard motor ...............3-2
N
Neutral interlock trigger ..........................2-3
Neutral throttle lever ...............................2-4
6-1
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Page 3
E
O
Operations of controls and
other functions .........................................2-2
Outboard motor serial number ..............1-1
Overheat warning ..................................2-13
Overheat warning indicator..................2-11
P
Periodic maintenance..............................4-8
Power trim/tilt switch .......................2-6, 2-8
Power trim/tilt will not operate...............5-5
Pre-operation checks ...............................3-5
Propeller selection .................................1-14
R
Remote control.........................................2-3
Remote control lever ...............................2-3
Replacement parts...................................4-8
Replacing fuse........................................4-20
Reverse ...................................................3-12
Ring free fuel additive .............................3-4
S
Safety information ...................................1-4
Shifting....................................................3-12
Specification data ....................................4-1
Star labels .................................................1-3
Start-in-gear protection.........................1-16
Starter will not operate............................5-6
Starting engine.........................................3-8
Stopping engine.....................................3-13
Storing outboard motor ..........................4-4
T
Tachometer...............................................2-9
Temporary action in emergency............5-5
Throttle friction adjusting screw ............2-6
Tilting up/down ......................................3-17
Tilt support lever....................................2-12
Top cowling lock lever ..........................2-12
Trailering outboard motor ......................4-3
Transporting and storing
outboard motor........................................4-3
Treatment of submerged motor ............5-9
Trim angle adjusting rod.........................2-8
Trim meter ..............................................2-10
Trim tab.....................................................2-7
Trimming outboard motor....................3-14
Troubleshooting.......................................5-1
W
Warming up engine...............................3-11
Warning system .....................................2-13
Water leakage.........................................4-20
Warranty information .................Next page
6-2
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Page 4
EMU01599
IMPORTANT WARRANTY INFORMATION FOR U.S.A. AND
CANADA
Welcome to the Yamaha Family!
Congratulations on the purchase of your new Yamaha marine power. Yamaha is committed to exceptional customer satisfaction, and we want your ownership experience to be
a satisfying one. Please read the following warranty information to help ensure satisfaction with your Yamaha.
Yamaha is ready to stand behind your purchase with strong warranty coverage. To be sure
you receive all the benefits of warranty, please take the following steps:
1. Be sure your new Yamaha is registered for warranty. Your boat dealer should do this at
the time of sale. Make sure your dealer gives you a copy of the completed Yamaha registration card for your records. If you are unsure whether or not your Yamaha is registered,
complete the Warranty Registration card found inside the cover of the Owner's Manual.
Mail it to the distributor for the country in which you live (see step 6 for the correct
address). If your Yamaha is not properly registered, a warranty repair could be unnecessarily delayed while registration records are checked.
2. Read the Limited Warranty statement which follows these instructions. This warranty
applies to Yamaha outboard motors sold in the United States, whether purchased separately or when supplied as original equipment by a boat builder. The terms also apply to
original equipment packages sold in Canada, with coverage provided by Yamaha Motor
Canada (see ``Warranty Guide'' for Canadian models). This warranty explains the conditions of the warranty, including the obligations that your dealer and you as the owner
have under the warranty. For example, your Yamaha outboard must receive a proper
pre-delivery inspection (PDI) by the selling dealer. Failure to take this important step
could jeopardize warranty coverage!
3. If you need warranty repairs, you must take your Yamaha outboard to an authorized
Yamaha outboard dealer. Be aware that not all selling boat dealers are authorized
Yamaha dealers. Only authorized dealers have the factory training, special tools, and
Yamaha support needed to perform warranty repairs.
4. If you are away from home, or your selling dealer is not an authorized Yamaha dealer,
use the following toll-free numbers to find the nearest Yamaha dealer.
United States Dealer Locations: 1-800-692-6242
Canada Dealer Locations:
1-800-267-8577
62Y-9-18-6
5/16/01 10:28 AM
Page 5
5. Your warranty applies specifically to repairs made in the country of purchase. If your
U.S.-purchased Yamaha needs warranty service while in Canada, or your Canadian purchased Yamaha needs service while in the United States, Yamaha will assist the local
dealer whenever possible. However, some products available in one country may not be
sold or serviced in the other.
6. If you need any additional information about your Yamaha or warranty coverage which
your dealer cannot provide, please contact us directly.
Yamaha Motor Corporation, U.S.A.
P.O. Box 6555
Cypress, CA 90630
Attention: Customer Relations Department
Telephone No.
Fax No.
(714) 761-7439
(714) 761-7559
Yamaha Motor Canada Ltd.
480 Gordon Baker Road
Toronto, Ontario
M2H 3B4
Attention: Customer Relations Department
Telephone No.
Fax No.
(416) 498-1911
(416) 491-3122
62Y-9-18-6
5/16/01 10:28 AM
Page 6
EMU01404
YAMAHA MOTOR CORPORATION, U.S.A.
FOUR-STROKE OUTBOARD MOTOR
THREE-YEAR LIMITED WARRANTY
Yamaha Motor Corporation, U.S.A. hereby warrants that new Yamaha 1999-or-later model four-stroke outboard motors originally distributed by Yamaha Motor Corporation, U.S.A. will be free from defects in material and workmanship for the period of time stated herein, subject to certain stated limitations. Warranty coverage for outboards distributed by non-US Yamaha affiliated companies may be
different.
PERIOD OF WARRANTY. Any new Yamaha 1999-or-later model four-stroke outboard motor purchased and registered with Yamaha
Motor Corporation, U.S.A. for pleasure use in the United States, will be warranted against defects in material or workmanship for a period of three (3) years from the date of purchase, subject to exclusions noted herein. Any Yamaha outboard motor purchased and utilized
for commercial applications will be warranted for a period of one (1) year from the date of purchase, subject to exclusions noted herein.
Yamaha peripheral equipment included with the motor, such as gauges, fuel tanks, and hoses, remote control boxes, and wiring external from the motor unit, will be warranted for one (1) year from the date of purchase of either pleasure or commercial use. Replacement
parts used in warranty repairs will be warranted for the balance of the applicable warranty period.
The second and third year of warranty (if applicable) shall be limited to covering the cost of parts and labor for major components only.
The major components covered are:
Power Unit Section
8 Power Head
8 Intake Manifold
8 Carburetor Assembly and its Related Components
8 Fuel Injection System and its Related Components
8 Fuel and Oil Pump Assemblies
8 Ignition System (Standard and Microcomputer)
Lower Unit Section
8 Exhaust System
8 Upper Casing
8 Lower Unit Assembly
Bracket Section
8 Bracket System
8 Power Trim and Tilt Assembly
WARRANTY REGISTRATION. To be eligible for warranty coverage, the outboard motor must be registered with Yamaha Motor Corporation, U.S.A. Warranty registration can be accomplished by any authorized Yamaha Outboard Motor Dealer. Upon receipt of the registration, an Owner’s Warranty Card will be sent by Yamaha to the registered purchaser.
OBTAINING REPAIRS UNDER WARRANTY. To receive repairs under this warranty, a valid Owner’s Warranty Card must be presented to
an authorized Yamaha Outboard Motor Dealer.
During the period of warranty, any authorized Yamaha outboard dealer will, free of charge, repair or replace, at Yamaha’s option, any
parts adjudged defective by Yamaha due to faulty workmanship or material from the factory. All replaced parts will become the property
of Yamaha Motor Corporation, U.S.A.
CUSTOMER’S RESPONSIBILITY. Under the terms of this warranty, the customer will be responsible for ensuring that the outboard
motor is properly operated, maintained, and stored as specified in the applicable Owner’s Manual.
The owner of the outboard motor shall give notice to an authorized Yamaha Outboard Motor Dealer of any and all apparent defects
within ten (10) days of discovery and make the motor available at that time for inspection and repairs at the dealer’s place of business.
GENERAL EXCLUSIONS FROM WARRANTY. This warranty will not cover the repair of damage if the damage is a result of abuse or
neglect of the product. Examples of abuse and neglect include, but are not limited to:
1.
Racing or competition use, modification of original parts, abnormal strain.
2.
Lack of proper maintenance and off season storage as described in the Owner’s Manual, installation of parts or accessories that are
not equivalent in design and quality genuine Yamaha parts.
3.
Operation of the motor at an rpm other than specified, use of lubricants or oils that are not suitable for outboard motor use.
4.
Damage as a result of accidents, collisions, contact with foreign materials, or submersion.
5.
Growth of marine organism on motor surfaces.
6.
Normal deterioration.
62Y-9-18-6
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Page 7
SPECIFIC PARTS EXCLUDED FROM WARRANTY. Parts replaced due to normal wear or routine maintenance such as oil, spark plugs,
shear pins, propellers, hubs, fuel and oil filters, brushes for the starter motor and power tilt motor, water pump impellers, and anodes,
are not covered by warranty.
Charges for removal of the motor from a boat and transporting the motor to and from an authorized Yamaha Outboard Motor Dealer are
excluded from warranty coverage.
Specific parts excluded from the second and third year of warranty (if applicable) are:
8 Top and Bottom Cowling
8 Electric Components (other than ignition system)
8 Rubber Components (such as hoses, tubes, rubber seals,
fittings, and clamps)
TRANSFER OF WARRANTY. Transfer of the warranty from the original purchaser to any subsequent purchaser is possible by having the
motor inspected by an authorized Yamaha Outboard Motor Dealer and requesting the dealer to submit a change of registration to
Yamaha Motor Corporation, U.S.A. within ten (10) days of the transfer.
YAMAHA MOTOR CORPORATION, U.S.A. MAKES NO OTHER WARRANTY OF ANY KIND, EXPRESSED OR IMPLIED. ALL IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE WHICH EXCEED THE OBLIGATIONS AND
TIME LIMITS STATED IN THIS WARRANTY ARE HEREBY DISCLAIMED BY YAMAHA MOTOR CORPORATION, U.S.A. AND
EXCLUDED FROM THIS WARRANTY.
SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATIONS
MAY NOT APPLY TO YOU. ALSO EXCLUDED FROM THIS WARRANTY ARE ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES
INCLUDING LOSS OF USE. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE EXCLUSION MAY NOT APPLY TO YOU.
THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE
TO STATE.
YAMAHA MOTOR CORPORATION, U.S.A.
Post Office Box 6555
Cypress, California 90630
WARRANTY QUESTIONS AND ANSWERS
Q.
A.
What costs are my responsibility during the warranty period?
The customer`s responsibility includes all costs of normal maintenance services, non-warranty repairs, accident and collision damages.
Q.
A.
What are some examples of ``abnormal’’ strain, neglect, or abuse?
These terms are general and overlap each other in areas. Specific examples include:
Running the machine out of oil, operating the machine with a broken or damaged part which causes another part to fail, damage or
failure due to improper or careless transportation, and/or tie down. If you have any specific questions on operation or maintenance, please contact your Yamaha outboard dealer for advice.
Q.
A.
Does the warranty cover incidental costs such as towing or transportation due to a failure?
No. The warranty is limited to repair of the machine itself.
Q.
A.
May I perform any or all of the recommended maintenance shown in the Owner’s Manual instead of having the dealer do them?
Yes, if you are a qualified mechanic and follow the procedures specified in the Owner’s and Service Manuals. We do recommend,
however, that items requiring special tools or equipment be done by a Yamaha outboard dealer.
Q.
A.
Will the warranty be void or canceled if I do not operate or maintain my new outboard exactly as specified in the Owner’s Manual?
No. The warranty on a new outboard cannot be ’’voided`` or ’’canceled``. However, if a particular failure is caused by operation or
maintenance other than as shown in the Owner’s Manual, that failure may not be covered under warranty.
Q.
A.
What responsibility does a Yamaha outboard dealer have under this warranty?
Each Yamaha outboard dealer is expected to:
1. Completely set up each outboard he sells prior to delivery.
2. Explain the operation, maintenance, and warranty requirements to your satisfaction at the time of sale, and upon your request
at any later date.
In addition, each Yamaha outboard dealer is held responsible for his setup, service and warranty repair work.
Q.
A.
Is the warranty transferable to second owners?
Yes. The remainder of any existing warranty can be transferred upon request. The unit has to be inspected and re-registered by an
authorized Yamaha outboard dealer for the policy to remain effective.
62Y-9-18-6
5/16/01 10:28 AM
Page 8
CUSTOMER SERVICE
If your machine requires warranty service, you must take it to any authorized Yamaha outboard dealer within the continental United
States. Be sure to bring your warranty registration identification or other valid proof of the original date of purchase. If a question or
problem arises regarding warranty, first contact the owner of the dealership. Since all warranty matters are handled at the dealer level,
this person is in the best position to help you. If you are still not satisfied and require additional assistance, please write:
YAMAHA MOTOR CORPORATION U.S.A.
CUSTOMER RELATIONS DEPARTMENT
P.O.Box 6555
Cypress, California 90630
When contacting Yamaha Motor Corporation, U.S.A. don’t forget to include any important information such as names, addresses,
model, engine serial number, dates, and receipts.
CHANGE OF ADDRESS
The federal government requires each manufacturer of a motor vehicle to maintain a complete, up-to-date list of all first purchasers
against the possibility of a safety-related defect and recall. This list is complied from the purchase registrations sent to Yamaha Motor
Corporation, U.S.A. by the selling dealer at the time of your purchase.
If you should move after you have purchased your new outboard, please advise us of your new address by sending a postcard listing
your outboard model name, engine serial number, dealer number (or dealer’s name) as it is shown on your warranty identification, your
name and new mailing address. Mail to:
YAMAHA MOTOR CORPORATION, U.S.A.
WARRANTY DEPARTMENT
P.O.Box 6555
Cypress, California 90630
This will ensure that Yamaha Motor Corporation, U.S.A. has an up-to-date registration record in accordance with federal law.
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Page 9
EMU01178
IMPORTANT WARRANTY INFORMATION
IF YOU USE YOUR YAMAHA OUTSIDE U.S.A. OR CANADA
Welcome to the Yamaha Family!
Congratulations on the purchase of your new Yamaha marine power. Yamaha is committed to exceptional customer satisfaction, and we want your ownership experience
to be a satisfying one. Please read the following warranty information to help ensure
satisfaction with your Yamaha.
This model was manufactured as a U.S.A. specification model, and the warranty statement shown in this manual is for market. To receive the benefits of the warranty that
applies to the country in which you use your Yamaha, please note the following information.
1.
The warranty on this model is the same as equivalent models sold in the country
where you will receive service. If you need more information about your warranty
coverage or your Yamaha outside the U.S.A. or Canada, please contact an authorized Yamaha dealer in your country.
2.
Keep a copy of your sales contract or invoice for the purchase of your Yamaha and
present it if you need warranty repairs. This document should show the date of
purchase, which is important evidence the repairing dealer will need to be sure
your Yamaha is covered by warranty.
3.
If your Yamaha needs warranty repairs, contact an authorized Yamaha dealer in
the country where you are. He will explain how to get warranty service in that
country.
4.
This Yamaha model may not be sold in some countries. Therefore, in some cases
your local dealer may not have all the parts or service information he may need,
which may unavoidably delay repairs. If this happens, we thank you for your
understanding and assure you we will attempt to resolve the situation as quickly as
possible.
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62Y-9-18 \
01.5.9 10:00 AM y [ W 1(1,1)
F50A/T50A
OWN
Printed in Japan
April 2001—0.7 × 1!
62Y-28199-18
(F50AET/FT50BET)
(E)
Printed on recycled paper
62Y-9-18 \
01.5.9 10:00 AM y [ W 1(2,1)
F50A/T50A
F50A
T50A
OWNER’S MANUAL
U.S.A.Edition
LIT-18626-04-72