Yamaha 15C, 9.9C User Manual

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9.9C 15C
U.S.A.Edition
LIT-18626-05-34
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Page 3
EMU01448
TO THE OWNER
Thank you for choosing a Yamaha out­board motor. This Owner’s manual con­tains information needed for proper oper­ation, maintenance and care. A thorough understanding of these simple instruc­tions will help you obtain maximum enjoyment from your new Yamaha. If you have any question about the operation or maintenance of your outboard motor, please consult a Yamaha dealer.
In this Owner’s Manual particularly important information is distinguished in the following ways.
The Safety Alert Symbol means ATTENTION! BECOME ALERT!
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YOUR SAFETY IS INVOLVED!
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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 advance-
ments 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.
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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.
EMU01446
9.9C, 15C
OWNER'S MANUAL
©2003 by Yamaha Motor Corporation, USA
1st Edition, March 2003
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-18626-05-34
NOTE:
The 15MH and its standard accessories are used as a base for the explanations and illustrations in this manual. There­fore, some items may not apply to every model.
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CONTENTS
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GENERAL INFORMATION
BASIC COMPONENTS
OPERATION
MAINTENANCE
1
2
3
4
TROUBLE RECOVERY
INDEX
READ THIS OWNER’S MANUAL CAREFULLY
BEFORE OPERATING YOUR OUTBOARD MOTOR.
5
6
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EMB00010
Chapter 1
GENERAL
INFORMATION
IDENTIFICATION NUMBERS
RECORD ....................................................1-1
Outboard motor serial number...........1-1
EMISSION CONTROL INFORMATION...1-2
SAFETY INFORMATION..........................1-3
1
2
IMPORTANT LABELS ..............................1-5
BASIC BOATING RULES .........................1-6
FUELING INSTRUCTIONS.....................1-10
Gasoline ..............................................1-11
Engine oil ............................................1-11
PROPELLER SELECTION .......................1-12
START-IN-GEAR PROTECTION ............1-13
3
4
5
6
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1
401012
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EMU00005
IDENTIFICATION NUMBERS
RECORD
EMU00007
OUTBOARD MOTOR SERIAL NUMBER
YAMAHA MOTOR CO., LTD. MADE IN JAPAN PAYS D'ORIGINE JAPON
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
1-1
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108015*

EMISSION CONTROL INFORMATION

ENGINE FAMILY :
THIS ENGINE CONFORMS TO 2001 U.S. EPA REGULATIONS FOR MARINE SI ENGINES. REFER TO THE OWNERS MANUAL FOR MAINTENANCE SPECIFICATIONS AND ADJUSTMENTS.
FELs : SPARK PLUG :
DISPLACEMENT :
ADVERTISED POWER :
IDLE SPEED : SPARK PLUG GAP (mm) : FUEL : GASOLINE VALVE LASH (mm) :
IN EX
cm kw
g/kw-hr
rpm IN NEUTRAL
3
Manufactured:
EMU01385
EMISSION CONTROL
INFORMATION
EMU01386
NORTH AMERICAN MODELS
This engine conforms to U.S. Environ­mental Protection Agency (EPA) regula­tions for marine SI engines. See the label affixed to your engine for details.
Approval label of Emission control certificate
This label is attached to the bottom cowl­ing.
1 Emission control information label
Existing Technology ; N/A
Manufactured date label
This label is attached to the clamp bracket or the swivel bracket.
2 Manufactured date label
1-2
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EMU00917
Q
8 Before mounting or operating the out-
board 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
owners or operators 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. Modifica-
tions 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.
SAFETY
INFORMATION
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. 8 When a swimmer is in the water near
you shift into neutral and shut off the engine.
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8 Be informed about boating safety. Addi-
tional 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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EMB30010
202012*
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WARNING
Be sure shift control is in neutral before starting engine. (except 2HP)
Do not touch or remove electrical parts when starting or during operation.
Keep hands,hair,and clothes away from flywheel and other rotating parts while engine is running.
6A1-83625-41

IMPORTANT LABELS

WARNING LABELS
1
2
This engine is equipped with a neutral starting device. The engine will not start unless the shift control is in neutral position.
WARNING
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6E0-83627-41
1-5
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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 Owners 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 “bur- dened vessel. These rules determine which vessel has the right-of-way, and what each vessel should do.
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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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102045
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 vessels 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.
side. This rule doesnt apply if both of you will clear one another if you continue on your set course and speed.
102044
Crossing
When two power driven vessels are crossing each others 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.
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)
102046
Overtaking
If you are passing another vessel, you are the Give-Way vessel. This means that the other vessel is expected to maintain
its course and speed. You must stay out
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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“fish- ing 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 informa­tion. These markers are white with black letters and orange boarders. They signify speed zones, restricted areas, danger areas, and general information.
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Remember, markings may vary by geo-
1
1
A
1
1
Proceeding toward head
of navigation from seaward
CAN BUOY
Odd number. Leave to port.
OR
SECONDARY CHANNEL BUOYS
STARTS NEW NUMBERING SYSTEM
old new
C " 1
"
NUN BUOY
Even number. Leave to starboard
N
"
2
"
No change
BUOY
COLOR CODE
BLACK
RED
GREEN
"
A
"
"
2
"
"
1
"
"
3
"
"
4
"
"
5
"
"
7
"
N
"
2
"
"
6
"
C
"
1
"
RB
"
L
"
RG
"
L
"
or
SECONDARY CHANNEL
MAIN CHANNEL
old
new
2
2
2
A
L
L
Odd number. increasing toward head of naviga-
MAIN CHANNEL BUOYS
"
1
" "
3
" "
5
" "
7
"
tion.Leave to port (left) proceeding upstream.
LIGHTED BUOY (Port Hand)`
White Light
Green Light
old
new
old
new
old
new
LIGHTED BUOY (Starboard Hand)`
"
2
" "
4
" "
6
"
Even number,increasing toward head of naviga­tion. Leave to starboard (right) proceeding up­stream.
White Light Red Light
"
A
"
LIGHTED SAFE WATER BUOY
No number. Marks midchannel, pass on either side. Letter has no lateral significance, used for
No number. Topmost band red
-
preferred
Top Mark
White Light
White Light
OR
OR
LIGHTED PREFERRED CHANNEL TO
RB
"
L
"
RG
"
L
"
PORT BUOY
identification and location purposes.
channel is to left of buoy. Letter has no lateral significance, used for identification and location purposes.
Red Light
Red or White Light
OR
102052
graphic location. Always consult local boating authorities before driving your boat in unfamiliar waters.
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EMU00016

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 gaso-
line 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 open-
ing or funnel to help prevent electrosta­tic sparks.
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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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EMU01804
GASOLINE
Recommended gasoline:
Regular unleaded gasoline with a minimum octane rating of 86 (Pump Octane Number) = (R+M)/2
If knocking or pinging occurs, use a differ­ent brand of gasoline or premium unlead­ed fuel.
EMU00027
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.
EMU00858
ENGINE OIL
Recommended oil: YAMALUBE 2 STROKE OUTBOARD OIL
If the recommended engine oil is not available, another 2-stroke engine oil with a NMMA-certified TC-W3 rating may be used.
1-11
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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.
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.
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9-1/4x9-3/4-J
1
23
602021
NOTE:
At full throttle and under a maximum boat load, the engines rpm should be within the upper half of the full throttle operating range, as listed in “SPECIFICA- TIONS on page 4-1. Select a propeller which fulfills this requirement. If operating under conditions which allow the engines 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.
1 Propeller diameter (in inches) 2 Propeller pitch (in inches) 3 Type of propeller (propeller mark)
Refer to the section CHECKING PRO­PELLER for instructions on propeller removal and installation.
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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EMC00010
Chapter 2
BASIC COMPONENTS
MAIN COMPONENTS..............................2-1
OPERATIONS OF CONTROLS AND
OTHER FUNCTIONS ................................2-2
Fuel tank ................................................2-2
Gear shift lever .....................................2-2
Engine stop button...............................2-3
Engine stop lanyard switch .................2-3
Throttle control grip .............................2-4
Choke knob ...........................................2-4
Recoil starter handle ............................2-4
Tiller handle ..........................................2-5
Steering friction adjustment ...............2-6
Trim angle adjusting rod .....................2-6
Tilt lock mechanism .............................2-6
Tilt support bar .....................................2-7
Top cowling lock lever.........................2-7
Carrying handle ....................................2-7
1
2
3
4
5
6
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101022*
902063
902051*
!9
!8
101232
!2
!1
!3
!5 !4
!6
u
o
y
i
!0
t
!7
q
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e
r
EMU01206

MAIN COMPONENTS

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1 Top cowling 2 Cowling lock lever 3 Cooling water pilot hole 4 Tilt lock lever 5 Recoil starter handle 6 Gear shift lever 7 Throttle control grip 8 Throttle friction adjustment knob 9 Engine stop button/
Engine stop lanyard switch
0 Clamp screw
2-1
q Carrying handle w Cooling water inlet e Anti-cavitation plate r Trim angle adjusting rod t Clamp bracket y Rope attachment u Choke knob i Fuel tank o Fuel hose
* May not be exactly as shown; also may not
be included as standard equipment on all models.
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1
3
2
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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.
1 Fuel hose joint 2 Fuel meter(If equipped) 3 Fuel tank cap 4 Air vent screw(If equipped)
Fuel hose joint
This connector is provided for connecting or disconnecting fuel hose.
902051
Fuel meter
This meter is on the fuel tank cap. It shows current fuel quantity in the fuel tank approximately.
Fuel tank cap
This cap is for filling fuel. To remove it, turn it counterclockwise.
Air Vent screw
This screw is on the fuel tank cap. To loosen it, turn it counterclockwise.
EMC25010
GEAR SHIFT LEVER (for Tiller control model):
Turning the gear-shift lever towards you engages the clutch with the forward gear so that the boat moves ahead. Turning the lever away from you engages the reverse gear so that the boat moves astern.
1 Neutral 2 Forward 3 Reverse
2-2
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407021*
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407021
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EMC27011
ENGINE STOP BUTTON (for Tiller control model)
Pushing this button opens the ignition cir­cuit and stops the engine.
EMU00931
ENGINE STOP LANYARD SWITCH (for Tiller control model)
The lock-plate 1 must be attached to the engine stop lanyard switch for the engine to run. The lanyard 2 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.
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8 Attach the 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.
2-3
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503013
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305071
1
2
3
4
EMC40010
THROTTLE CONTROL GRIP (for Tiller control model)
The throttle control grip is on the tiller handle. Turn the grip counterclockwise to increase speed and clockwise to decrease speed.
Throttle indicator
The fuel consumption curve on the throt­tle indicator shows the relative amount of fuel consumed for each throttle position. Choose the setting that offers the best performance and fuel economy for the desired operation.
1 Throttle indicator
EMC42310
CHOKE KNOB
Pulling out this knob supplies a rich mix­ture required to start or warm up the engine. There are 4 operating position as shown below :
Position Function
1 To start a hot engine
2 or 3 To warm up a cold engine
or restart a warm engine
4 To start a cold engine
EMC44010
RECOIL STARTER HANDLE (If equipped)
Pull the handle gently until resistance is felt. Then vigorously pull the handle
209011
straight out to crank the engine to start it.
2-4
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503015
502011
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EMC60010
TILLER HANDLE (for Tiller control model)
Moving the tiller handle sideways to adjust the steering direction.
EMC64010
Throttle Friction Adjustment (for Tiller control model)
A friction device in the tiller handle pro­vides resistance to movement of the throttle grip. This is adjustable for opera­tor preference. An adjusting screw/bolt is located within the tiller handle.
To increase the resistance: Turn the adjusting screw/bolt clockwise. To decrease the resistance: Turn the adjusting screw/bolt counter­clockwise.
When constant speed is desired, tighten the adjusting screw/bolt to maintain the desired throttle setting.
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Do not overtighten the friction adjusting screw/bolt. If there is too much resis­tance, it may be difficult to move the throttle grip, which could result in an accident.
2-5
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408011
402014*
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EMD00010
STEERING FRICTION ADJUSTMENT (for Tiller control model)
A friction device provides resistance to steering movement. This is adjustable for operator preference. An adjusting screw/bolt is located on the swivel bracket.
To increase the resistance: Turn the adjusting screw/bolt clockwise.
To decrease the resistance: Turn the adjusting screw/bolt counter­clockwise.
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Do not overtighten the friction screw/bolt. If there is too much resis­tance, it may be difficult to steer, which could result in an accident.
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.
001742
EMD44110
TILT LOCK MECHANISM (for Manual tilt model)
The tilt-lock mechanism is used to pre­vent reverse thrust from the propeller lift­ing the outboard motor when reversing. To lock it, set the tilt-lock lever in the Lock position. To release it, place the tilt-lock lever in the Tilt position.
1 Tilt-lock lever
2-6
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403013
301012*
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EMD48010
TILT SUPPORT BAR
The tilt support bar keeps the outboard motor in the tilted up position.
EMD62011
TOP COWLING LOCK LEVER
To remove the engine top cowling, turn 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 upward.
1 Top cowling lock lever
EMD68010*
CARRYING HANDLE
The carrying handle is included between the clamp bracket. The carrying handle enables you to carry the outboard motor readily with one hand after setting it up. To set up the carrying handle, proceed as follows.
1) Place the tilt lock lever in the lock position.
2) Securely hook the arm of carrying handle end to the clamp bracket bar.
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Place the tilt lock lever in the lock posi­tion while using the carrying handle. Oth­erwise, the lower casing may fall to the grand while carrying the motor.
1 Clamp bracket bar
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EMF00010
Chapter 3
OPERATION
INSTALLATION ........................................3-1
Mounting the outboard motor............3-2
Clamping the outboard motor ............3-4
FILLING FUEL AND ENGINE OIL ............3-5
Filling fuel..............................................3-5
Gasoline (petrol) and oil mixing .........3-6
PRE-OPERATION CHECKS ......................3-7
1
2
BREAKING IN (RUNNING IN)
ENGINE .....................................................3-8
STARTING ENGINE ...............................3-10
WARMING UP ENGINE .........................3-13
SHIFTING ................................................3-14
Forward ...............................................3-14
Reverse................................................3-15
STOPPING ENGINE ...............................3-16
TRIMMING OUTBOARD MOTOR.........3-17
Adjusting trim angle ..........................3-18
CRUISING IN SHALLOW WATER.........3-20
TILTING UP/DOWN ...............................3-22
CRUISING IN OTHER CONDITIONS.....3-24
Cruising in salt water .........................3-24
Cruising in turbid water.....................3-24
3
4
5
6
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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.
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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104011
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EMU00176
MOUNTING THE OUTBOARD MOTOR
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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 sec-
tion 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 experi-
enced 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 experi-
enced 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)
3-2
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104013
0~25mm
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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.
EMU01298
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 between the bottom of the boat and a level 25 mm (1 in.) below it.
NOTE:
8 The optimum mounting height of the
outboard motor is affected by the boat/motor combination and the desired use. Test runs at different heights can help determine the opti­mum mounting height.
8 Refer to the section “TRIMMING OUT-
BOARD MOTOR” for instructions on setting the trim angle of the outboard.
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EMF14010
CLAMPING THE OUTBOARD MOTOR
1) Place the outboard on the transom so that it is positioned as close to the center as possible. Tighten the tran­som clamp screws evenly and secure­ly. Check the clamp-screws for tight­ness occasionally during operation of the motor as they can work loose due to engine vibration.
w
Loose clamp screws could allow the motor to move on the transom or fall off the transom. This could cause loss of control and serious injury. Make sure the transom screws are tightened securely. Occasionally check the screws for tight­ness during operation.
2) An engine restraint cable or chain should be used. Attach one end to the engine restraint cable attachment point and the other to a secure mounting point on the boat. Other­wise, the engine could be completely lost if it accidentally falls off the tran­som.
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902055
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FILLING FUEL
AND ENGINE OIL
EMF30010
FILLING FUEL
1) Remove the fuel tank cap.
2) Fill the fuel tank carefully.
3) Close the cap securely after refueling. Wipe up any spilled fuel.
Fuel tank capacity:
Refer to SPECIFICATIONS, Page 4-1.
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.
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EMF35010
GASOLINE (PETROL) AND OIL MIXING
Pre-mix model
Oil : Gasoline (Petrol)
Break-in period 1 : 25
After break-in 1 : 100
w
902032
1) Pour oil and gasoline into the fuel tank, in that order.
1 Oil 2 Gasoline (Petrol)
2) Then mix the fuel thoroughly by shak­ing.
3) Make sure the oil is mixed with gaso­line .
cC
8 Avoid using any oil other than the des-
ignated type.
8 Use a thoroughly blended fuel-oil mix-
ture.
8 If the mixture is not thoroughly blend-
ed, or if the mixing ratio is incorrect, the following problems could occur: Low oil ratio:
Lack of oil could cause major engine trouble, such as piston seizure.
High oil ratio:
Too much oil could cause fouled spark plugs, smoky exgaust, and heavy carbon deposits.
Gasoline (Petrol)
Engine oil
3-6
Mixing ratio
25 : 1
1 L 12 L 14 L 24 L
(0.26 US gal, (3.2 US gal, (3.7 US gal, (6.3 US gal,
0.22 Imp gal) 2.6 Imp gal) 3.1 Imp gal) 5.3 Imp gal)
0.04 L 0.48 L 0.56 L 0.96 L
(0.04 US qt, (0.51 US qt, (0.59 US qt, (1.01 US qt,
0.04 Imp qt) 0.42 Imp qt) 0.49 Imp qt) 0.84 Imp qt)
Page 34
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Mixing ratio
Gasoline (Petrol)
Engine oil
1 L 12 L 14 L 24 L
(0.26 US gal,
0.22 Imp gal)
0.01 L 0.12 L 0.14 L 0.24 L
(0.01 US qt, (0.13 US qt, (0.15 US qt, (0.25 US qt,
0.01 Imp qt) 0.11 Imp qt) 0.12 Imp qt) 0.21 Imp qt)
100 : 1
(3.2 US gal, (3.7 US gal, (6.3 US gal,
2.6 Imp gal) 3.1 Imp gal) 5.3 Imp gal)
NOTE:
If using a permanently installed tank, pour the oil gradually as the fuel is being added to the tank.
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.
EMF42110
Oil
8 Check to be sure you have plenty of oil
for your trip.
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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 connec-
tions.
8 Check operation of the starter and stop
switches when the outboard motor is in the water.
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.
EMF50012
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.
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Break-in (running-in) time:10 hours
Break-in (running-in) premix ratio:
Refer to Gasoline/Petrol and Oil Mixing”.
EMU00226
Run the engine under load (in gear with a propeller installed) as follows.
1) First 10 minutes: Run the engine at the lowest possi­ble-speed. A fast idle in neutral is best.
2) Next 50 minutes: Do not exceed half throttle (approxi­mately 3,000 r/min). Vary engine speed occasionally. If you have an easy-planing boat, accelerate at full throttle onto plane, then immediately reduce the throttle to 3,000 r/min or less.
3) Second hour: Accelerate at full throttle onto plane, then reduce engine speed to three­quarter throttle (approximately 4,000 r/min). Vary engine speed occasional­ly. Run at full throttle for one minute, then allow about 10 minutes of opera­tion at three-quarter throttle or less to let the engine cool.
4) Third through tenth hours: Avoid operating at full throttle for more than 5 minutes at a time. Let the engine cool between full-throttle runs. Vary engine speed occasionally.
5) After the first 10 hours: Operate the engine normally. Use the standard premix ratio of gasoline : Oil. (Refer to Gasoline/Petrol and Oil Mixing.)
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EMU01147

STARTING ENGINE

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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.
902061
001671
1) 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) Squeeze the primer bulb with the out­let end up until you feel it become firm.
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EMU01497
PROCEDURE FOR TILLER CONTROL MODEL
4) Place the gear-shift lever in the neu­tral position.
NOTE:
The start-in-gear protection device pre­vents the engine from starting except when in Neutral.
5) 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.
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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 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.
6) Place the throttle control grip in the START position.
503016
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EMU00241*
Manual Start Model
7) Pull out the choke knob completely when the engine is cold. After the engine starts, set the choke knob to the 2nd or 3rd position for warming up the cold engine. After warming up the engine, set the choke knob to the original position.
NOTE:
8 It is not necessary to use the choke
when restarting a hot engine.
8 If the choke knob is left pulled out, the
engine will stall.
8) Pull the starter handle slowly until you feel resistance. Then, give a strong pull straight out to start the engine. Repeat it, if necessary.
9) After the engine starts, return the starter handle slowly to the original position before releasing it.
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309012
EMG00010-*

WARMING UP ENGINE

1) Before beginning operation, allow the engine to warm up at idling speed for 3 minutes. (Failure to do this will shorten engine life.)
2) Check for a steady flow of water from the cooling-water pilot hole.
cC
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.
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503012
EMG20111

SHIFTING

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Before shifting, make sure there are no swimmers or obstacles in the water near you.
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).
EMG22110
FORWARD
1) Place the throttle control grip in the fully closed position.
N
F
2) Turn the gear shift lever quickly and firmly from Neutral to Forward.
406035
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EMG33210
REVERSE
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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.
1) Place the throttle control grip in the fully closed position (for Tiller control model).
2) Check that the tilt-lock lever (for Man­ual tilt model) is in the locked posi­tion.
R
N
406036
3) Turn the gear-shift lever quickly and firmly from Neutral to Reverse.
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304013
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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.
EMU00275
1) Push and hold the engine stop button until the engine comes to a complete stop.
2) After stopping the engine, disconnect the fuel line from the motor.
3) Tighten the air vent screw on the fuel tank cap after stopping the engine, if it is equipped.
NOTE:
The engine can also be stopped by pulling the lanyard and removing the lock plate from the engine stop lanyard switch.
902052
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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
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
3-17
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ADJUSTING TRIM ANGLE
EMU00951
Manual tilt model
There are 4 or 5 holes provided in the clamp bracket to adjust the outboard motor trim angle.
1) Stop the engine.
2) Remove the trim angle adjusting rod 1 from the clamp bracket while tilting the motor up slightly.
3) Reposition the rod in the desired hole.
To raise the bow (trim-out), move the rod away from the transom. To lower the bow (trim-in), move the rod toward the transom. Make test runs with the trim set to differ­ent angles to find the position that works best for your boat and operating condi­tions.
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8 Stop the engine before adjusting the
trim angle.
8 Use care to avoid being pinched when
removing or installing the rod.
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. Improper trim angle can cause loss of control.
NOTE:
The outboard motor trim angle can be changed approximately 4 degrees by shifting the trim adjusting-rod one hole.
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001672
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EMU19160
Trim angle settings and boat handling
When the boat is on plane, a bow-up atti­tude results in less drag, greater stability and efficiency. This is generally when the keel line of the boat is up about 3 to 5 degrees. With the bow up, the boat may have a greater tendency to steer to one side or the other. Compensate for this as you steer. The trim tab can also be adjust­ed to help offset this effect.
w
e
001673
001674
1 Optimum angle (level keel line) 2 Bow up 3 Bow down
Bow Up
Too much trim-out puts the bow of the boat too high in the water. Performance and economy are decreased because the hull of the boat is pushing the water and there is more air drag. Excessive trim-out can also cause the propeller to ventilate, which reduces performance further, and the boat may porpoise (hop in the water), which could throw the operator and passengers overboard.
Bow Down
When the bow of the boat is down, it is easier to accelerate from a standing start onto plane. Too much trim-in causes the boat to plow through the water, decreasing fuel economy and making it hard to increase speed. Operating with excessive trim-in at higher speeds also makes the boat unstable. Resistance at the bow is greatly increased, heightening the danger of bow steering and making operation difficult and dangerous.
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000832
NOTE:
Depending on the type of boat, the out­board motor trim angle may have little effect on the trim of the boat when oper­ating.
EMG70011
CRUISING IN SHALLOW
WATER
The outboard motor can be tilted up par­tially to allow operation in shallow water.
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8 Place the gear shift in the Neutral posi-
tion before using the shallow water cruising system.
8 Run the boat at the lowest possible
speed when using the shallow water cruising system. The tilt-lock mecha­nism does not work while the shallow water cruising system is being used. Hitting an underwater obstacle could cause the engine to lift out of the water, resulting in loss of control.
8 Use extra care when operating in
reverse. Too much reverse thrust can cause the engine to lift out of the water, increasing the chance of acci­dent and personal injury.
8 Return the engine to its normal posi-
tion as soon as the boat is back in deeper water.
cC
Place the gear-shift in the Neutral posi­tion before using the shallow water cruis­ing system.
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EMG71210
PROCEDURE
1) Place the gear shift lever in the neu­tral position.
2) Pull up the tilt lock lever.
3) Slightly tilt up the engine. The tilt­support bar will lock automatically, supporting the engine in a partially raised position.
NOTE:
If the engine is tilted up completely, the tilt-lock lever automatically locks. The shallow water lever is no longer effective.
4) When lowering the engine, push the tilt lock lever down. Slightly tilt up the engine until the tilt-support bar auto­matically returns to the free position. Then, slowly lower the engine to the normal position.
403012
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EMH10110

TILTING UP/DOWN

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
8 Before tilting the motor, follow the pro-
cedures under “STOPPING ENGINE”. Never tilt the motor while the engine is running. Severe damage from over­heating can result.
8 Do not tilt up the engine by pushing
the steering handle as this could break the handle.
8 Keep the power unit higher than the
propeller at all times. Otherwise, water can run into the cylinder, causing dam­age.
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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.
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Leaking fuel is a fire hazard. Disconnect the fuel line 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.)
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EMU00290
PROCEDURE FOR TILTING UP
1) Place the gear shift lever in Neutral.
2) Remove the fuel line connection from the motor.
3) Place the tilt lock lever in the release position.
4) Hold the rear of the top cowling with one hand and fully tilt the engine up.
5) The tilt support bar turns to the locked position automatically.
403013
EMU00300
PROCEDURE FOR TILTING DOWN
1) Place the tilt lock lever in the lock position.
2) Slightly tilt up the engine until the tilt support bar is released automatically.
3) Tilt down the engine.
403012
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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.
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EMK00010
Chapter 4
MAINTENANCE
SPECIFICATIONS .....................................4-1
TRANSPORTING AND STORING
OUTBOARD MOTOR ...............................4-3
Trailering outboard motor...................4-3
Storing outboard motor ......................4-4
PERIODIC MAINTENANCE......................4-7
Replacement parts ...............................4-7
Maintenance chart................................4-8
Cleaning and adjusting spark plug.....4-9
Checking top cowling ........................4-10
Checking fuel system.........................4-11
Inspecting fuel filter ...........................4-12
Inspecting idling speed......................4-13
Checking wiring and connectors ......4-14
Exhaust leakage..................................4-14
Water leakage .....................................4-14
Greasing ..............................................4-15
Checking propeller .............................4-16
Changing gear oil ...............................4-18
Cleaning fuel tank...............................4-19
Inspecting and replacing anode(s) ...4-20
Checking bolts and nuts ....................4-21
Motor exterior.....................................4-21
Coating the boat bottom ...................4-21
1
2
3
4
5
6
Page 54
EMR50302*
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SPECIFICATIONS

Model
Item
DIMENSIONS
8Overall Length mm (in.) 8Overall Height S mm (in.) 8Overall Width mm (in.) 8Transom height S mm (in.) 8Weight S kg (lb.)
PERFORMANCE
8Full throttle operating range r/min 8Maximum output kW (HP) 8Idling speed (in neutral) r/min
ENGINE
8Engine type
Displacement cm Bore × stroke mm (in.)
8Ignition system 8Spark plug NGK
Spark plug gap mm (in.)
8Control system 8Starting system 8Alternator output V-A (W) 8Starting carburetion system
DRIVE UNIT
8Gear positions
Gear ratio
8Trim/tilt system 8Propeller mark
FUEL AND OIL
8Fuel
Fuel tank capacity L (US gal, Imp gal)
8Recommended engine oil
Lubrication Fuel:oil ratio Fuel:Oil
8Recommended gear oil
Gear oil quantity cm
TIGHTENING TORQUE
8Spark plug N•m (kgf•m, lb•ft) 8Propeller nut N•m (kgf•m, lb•ft)
Unit 9.9MSHC
3
(cu.in.)
3
(US oz, Imp oz)
873 (34.4) 1,040 (40.9) 332 (13.1) 440 (17.3) 36 (79)
4,500~5,500
7.3 (9.9) at 5,000 r/min. 700~800
2-stroke, L2 246 (15.01) 56 × 50 (2.20 × 1.97) C.D.I B7HS-10
0.9~1.0 (0.035~0.039) Tiller control Manual start 12-(80) Choke valve start system
Forward-Neutral-Reverse
2.08 (27/13) Manual J
Regular unleaded gasoline (P.O.N.: minimum 86) 25 (6.6, 5.5) YAMALUBE, 2 STROKE OUTBOARD OIL or an equivalent TC-W3 certified outboard oil Premix 100 : 1 Hypoid gear oil (SAE 90) 250 (8.5, 8.8)
25 (2.5, 18) 17 (1.7, 12)
4-1
Page 55
15MSHC
873 (34.4) 1,040 (40.9) 332 (13.1) 440 (17.3) 36 (79)
4,500~5,500
11.0 (15) at 5,000 r/min. 700~800
2-stroke, L2 246 (15.01) 56 × 50 (2.20 × 1.97) C.D.I B7HS-10
0.9~1.0 (0.035~0.039) Tiller control Manual start 12-(80) Choke valve start system
E
Forward-Neutral-Reverse
2.08 (27/13) Manual J
Regular unleaded gasoline (P.O.N.: minimum 86) 25 (6.6, 5.5) YAMALUBE, 2 STROKE OUTBOARD OIL or an equivalent TC-W3 certified outboard oil Premix 100 : 1 Hypoid gear oil (SAE 90) 250 (8.5, 8.8)
25 (2.5, 18) 17 (1.7, 12)
4-2
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EMU01369
TRANSPORTING AND
STORING OUTBOARD MOTOR
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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.
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.
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.
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. 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.
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E
When transporting or storing the out­board motor while removed from a boat, fold the tiller handle and lean the motor on the tiller handle to keep in a horizontal position.
1 Vertical position 2 Horizontal position
NOTE:
Place a towel or the like under the out­board motor to protect it from damage.
cC
Keep the power unit higher than the pro­peller at all times. Otherwise, cooling water can run into the cylinder, which could result in damage.
EMK22010**
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.
102013
Filling Fuel Tank
Fill the fuel tank with fresh fuel and add one ounce of “Yamaha fuel conditioner and stabilizer” (Part No. LUB-FUELC-12-
00) 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
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a
EMU00338*
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.
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8 Do not tough 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.
EMU00994*
8 Flushing in a Water Tank
cC
If the fresh water level is below the level of the anti-cavitation plate, or if the water supply is insufficient, engine seizure may occur.
q
w
605024
1) Remove the engine top cowling.
2) Install the outboard motor on the water tank.
3) Fill the tank with fresh water to above the level of the anti-cavitation plate.
4) Remove the cap silencer cover.
5) Run the engine at a fast idle for 10~15 minutes.
6) Just prior to turning off the engine, quickly spray “Yamaha Stor-Rite Engine Fogging Oil” (Part No. LUB­STRRT-12-00) into the silencer cover. When properly done, the engine will smoke excessively and almost stall.
7) Remove the motor from the water tank.
8) Install the cap and the top cowling.
1 Water surface 2 Lowest water level
4-5
a for fogging on the
Page 59
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EMK26010
Lubrication
1) Remove the spark plugs, and spray a 10 second spray of Yamaha Stor-Rite Engine Fogging Oil into each cylinder. Grease the spark plug threads and reinstall the spark plugs and torque to proper specification. (Refer to the Periodic Maintenance section, “Cleanning 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 the Periodic Maintenance section, “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 Periodic Maintenance section, “Greasing.”)
EMK27010
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
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EMU01569

PERIODIC MAINTENANCE

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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.
4-7
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10 hours 50 hours 100 hours 200 hours
(1 month) (3 months) (6 months) (1 year)
Spark plug(s)
Cleaning / adjustment / replacement
●●●
Greasing points Greasing
Gear oil Change ●●
Fuel system Inspection ●●●
Fuel filter (can be disassembled)
Inspection / cleaning ●●●
Fuel tank (Yamaha portable tank)
Inspection / cleaning
Idling speed (carburetor models)
Inspection / adjustment ●/1 ●/1
Anode(s) (external) Inspection / replacement ● /1 ●/1
Anode(s) (internal) Inspection / replacement
1
Cooling water passages Cleaning ●●
Propeller and cotter pin Inspection / replacement ●●
Battery Inspection / charging ●/1
Throttle link / throttle cable / throttle pick-up timing
Inspection / adjustment
1
Shift link / shift cable Inspection / adjustment
1
Thermostat Inspection
1
Water pump Inspection
1
Cowling clamp Inspection
Item
Actions
Initial
Every
EMU19450
MAINTENANCE CHART
Frequency of maintenance operations may be adjusted according to the operating con­ditions, but the following table gives general guidelines. Refer to the sections in this chapter for explanations of each owner-specific action. The mark ( The mark (1) indicates work to be carried out by your Yamaha dealer.
) indicates the check-ups which you may carry out yourself.
NOTE:
When operating in salt water, turbid or muddy water, the engine should be flushed with clean water after each use.
4-8
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EMU01202
CLEANING AND ADJUSTING SPARK PLUG
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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.
4-9
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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.
w
q
903022
Initial of spark plug Plug wrench size I.D. mark
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)
EMU16350
CHECKING TOP COWLING
Check the fitting of the top cowling by pushing it with both hands. If the fitting is loose have it repaired by a Yamaha dealer.
4-10
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EMK38010
CHECKING FUEL SYSTEM
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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.
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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.
4-11
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EMU00370
INSPECTING FUEL FILTER
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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.
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e
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207012
r
207013*
EMU09782
1) Remove the nut holding the fuel filter assembly if equipped.
2) Unscrew the filter cup 1, catching any spilled fuel in a rag.
3) 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. If any water is found in the fuel, the Yamaha portable fuel tank or other fuel tanks should be checked and cleaned.
4) Reinstall the filter element in the cup. Make sure the O-ring is in position in the cup. Firmly screw the cup onto the filter housing 4.
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5) Attach the filter assembly to the bracket so that the fuel hoses are attached to the filter assembly.
6) Run the engine and check the filter and lines for leaks.
EMU09912
INSPECTING IDLING SPEED
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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 also be used.
A diagnostic tachometer should be used for this procedure. Results may vary depending on whether testing is conduct­ed with the flushing attachment, in a test tank, or with the outboard motor in the water.
1) Start the engine and allow it to warm up fully in neutral until it is running smoothly. If the outboard motor is mounted on a boat, be sure the boat is tightly moored.
2) Verify whether the idle speed is set to specification. For idle speed specifica­tions, see Specifications in this chapter.
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606011
NOTE:
Correct idling speed inspection is only possible if the engine is fully warmed up. If not warmed up fully, the idle speed will measure higher than normal. If you have difficulty verifying the idle speed, or the idle speed requires adjustment, consult a Yamaha dealer or other qualified mechan­ic.
EMK78010
CHECKING WIRING AND CONNECTORS
1) Check that each grounding wire is properly secured.
2) 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.
4-14
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EMU00366
103011
GREASING
Yamaha marine grease (Water resistant grease)
E
4-15
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210012
602051
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EMU00388
CHECKING PROPELLER
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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 pro-
peller when loosening or tightening the propeller nut. Put a wood block between the cavitation plate and the propeller to prevent the propeller from turning.
602054
EMU00390
Propeller Checking Point
8 Check each of the propeller blades for
wear, erosion from cavitation or ventila­tion, or other damage.
8 Check the splines for wear and damage. 8 Check for fish line winding around the
propeller shaft.
8 Check the propeller shaft oil seal for
damage.
4-16
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EMU00977
Removing the Propeller
1) Straighten the cotter-pin 1 and pull it out using a pair of pliers.
2) Remove the propeller nut 2 and washer 3.
3) Remove the propeller 4 and thrust washer 5.
EMU00396
Installing the Propeller
cC
8 Be sure to install the thrust washer
before installing the propeller, other­wise the 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.
602053
1) Apply Yamaha Marine grease or a corrosion resistant grease to the pro­peller-shaft.
2) Install the thrust washer and propeller on the propeller-shaft.
3) Install the washer and tighten the pro­peller nut to the specified torque.
Tightening torque: Refer to SPECIFICATIONS page 4-1.
4) Align the propeller nut with the pro­peller shaft hole. Insert a new cotter pin in the hole and bend the cotter pin ends.
NOTE:
When 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.
4-17
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001186
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EMU01773
CHANGING GEAR OIL
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8 Be sure the outboard motor is securely
fastened to the transom or a stable stand. You could be severely injured if the outboard motor falls on you.
8 Never get under the lower unit while it
is tilted, even when the tilt support lever or knob is locked. Severe injury could occur if the outboard motor acci­dentally falls.
1) Tilt the outboard motor so that the gear oil drain screw is at the lowest point possible.
2) Place a suitable container under the gear case.
3) Remove the gear oil drain screw 1.
4) 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.
4-18
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601022
5) With the outboard motor in a vertical position, and using a flexible or pres­surized filling device, inject the gear oil into the gear oil drain screw hole.
Gear oil grade and capacity:
See Specifications in this chapter.
6) When the oil begins to flow out of the oil level plug hole, insert and tighten the oil level plug.
7) Insert and tighten the gear oil drain screw.
EML22010
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 according to
local regulations.
4-19
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902054
604011*
To clean the fuel tank:
1) Empty the fuel tank into an approved gasoline 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 meter 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 meter assembly and tighten the screws firmly.
EMU14622
INSPECTING AND REPLACING ANODE(S)
Yamaha outboard motors are protected from corrosion by sacrificial anodes. Inspect the external anodes periodically. Remove scales from the surfaces of the anodes. Consult a Yamaha dealer for replacement of external anodes.
cC
Do not paint anodes, as this would ren­der them ineffective.
NOTE:
Inspect ground leads attached to external anodes on equipped models. Consult a Yamaha dealer for inspection and replacement of internal anodes attached to the power unit.
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102031
EML40010
CHECKING BOLTS AND NUTS
1) Check that bolts securing the cylinder head and engine and the nut securing the flywheel are tightened with their specified tightening torques.
2) 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”.
102025
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. Consult a Yamaha dealer for touch-up paint.
EML44010
COATING THE BOAT BOTTOM
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.
4-21
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EMN00010
Chapter 5
TROUBLE RECOVERY
TROUBLESHOOTING ..............................5-1
TEMPORARY ACTION IN
EMERGENCY ............................................5-5
Impact damege.....................................5-5
Starter will not operate ........................5-6
Treatment of submerged motor .........5-8
1
2
3
4
5
6
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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 Remedy
A. Engine will not
start (Starter operates).
1. Fuel tank empty.
2. Fuel contaminated or stale.
3. Fuel filter clogged.
4. Starting procedure incorrect.
5. Fuel pump malfunctions.
6. Spark plug(s) fouled or incorrect type.
7. Spark plug cap(s) fitted incorrectly.
8. Poor connections or damaged ignition wiring.
9. Ignition parts faulty.
10. Engine stop switch lanyard not attached.
11. Engine inner parts damaged.
1. Fill tank with clean, fresh fuel.
2. Fill tank with clean, fresh fuel.
3. Clean or replace filter.
4. Read "STARTING ENGINE" section.
5. Have serviced by a Yamaha dealer.
6. Inspect spark plug(s). Clean or replace with recommended type.
7. Check and re-fit cap(s).
8. Check wires for wear or breaks. Tighten all loose connections. Replace worn or broken wires.
9. Have serviced by a Yamaha dealer.
10. Attach lanyard.
11. Have serviced by a Yamaha dealer.
5-1
Page 77
Trouble Possible Cause Remedy
B. Engine idles
irregularly or stalls.
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. Spark plug gap incorrect.
7. Poor connections or damaged ignition wiring.
8. Specified engine oil not used.
9. Thermostat faulty or clogged.
10. Carburetor adjustments incorrect.
11. Fuel pump damaged.
12. Air vent screw on the fuel tank closed.
13. Choke knob pulled out.
14. Motor angle too high.
15. Carburetor clogged.
16. Fuel joint connection incorrect.
17. Throttle valve adjustment incorrect.
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. Inspect and adjust as specified.
7. Check wires for wear or breaks. Tighten all loose connections. Replace worn or broken wires.
8. Check and replace oil as specified.
9. Have serviced by a Yamaha dealer.
10. Have serviced by a Yamaha dealer.
11. Have serviced by a Yamaha dealer.
12. Open the air vent screw.
13. Return to home position.
14. Return to normal operating position.
15. Have serviced by a Yamaha dealer.
16. Connect correctly.
17. Have serviced by a Yamaha dealer.
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5-2
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Trouble Possible Cause Remedy
C. Engine power loss.
1. Propeller damaged.
2. Propeller pitch or diameter incorrect.
3. Trim angle incorrect.
4. Motor mounted at incorrect height on transom.
5. Boat bottom fouled with marine growth.
6. Spark plug(s) fouled or incorrect type.
7. Weeds or other foreign matter tangled on gear housing.
8. Fuel system obstructed.
9. Fuel filter clogged.
10. Fuel contaminated or stale.
11. Spark plug gap incorrect.
12. Poor connections or damaged ignition wiring.
13. Failed ignition parts.
14. Specified engine oil not used.
15. Thermostat faulty or clogged.
16. Air vent screw closed.
17. Fuel pump damaged.
18. Fuel joint connection incorrect.
19. Heat range of spark plug incorrect.
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. Clean boat bottom.
6. Inspect spark plug(s). Clean or replace with recommended type.
7. Remove foreign matter and clean lower unit.
8. Check for pinched or kinked fuel line or other obstructions in fuel system.
9. Clean or replace filter.
10. Fill tank with clean, fresh fuel.
11. Inspect and adjust as specified.
12. Check wires for wear or breaks. Tighten all loose connections. Replace worn or broken wires.
13. Have serviced by a Yamaha dealer.
14. Check and replace oil with specified type.
15. Have serviced by a Yamaha dealer.
16. Open the air vent screw.
17. Have serviced by a Yamaha dealer.
18. Connect correctly.
19. Inspect spark plug and replace it with recommended type.
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5-3
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Trouble Possible Cause Remedy
D. Engine vibrates
excessively.
1. Propeller damaged.
2. Propeller shaft damaged.
3. Weeds or other foreign matter tangled on propeller.
4. Motor mounting bolt loose.
5. Steering pivot loose or damaged.
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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607011
EMN20010
TEMPORARY ACTION IN
EMERGENCY
EMU01492
IMPACT DAMAGE
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The outboard motor can be seriously damaged by a collision while operating or trailering. Damage could make the out­board motor unsafe to operate.
If the outboard motor hits any object in the water, follow the procedure below.
1) Stop the engine immediately.
2) Inspect the control system and all components for damage. Also, inspect the boat for damage.
3) Whether damage is found or not, return to the nearest harbor slowly and carefully.
4) Have a Yamaha dealer inspect the outboard motor before operating it again.
5-5
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EMN30110
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.
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8 Use this procedure only in an emer-
gency 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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208012
407021**
301012
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Procedure
1) Remove the top cowling.
2) Remove the starter/flywheel cover by removing the bolts.
NOTE:
On a model equipped with the start-in­gear protection device (cable), disconnect the cable from the starter.
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 switch. On the electric start model the main switch must be on if the main switch is equipped.
EMR00001
4) To start the engine with emergency starter rope, insert the knotted end of the rope into the notch in the flywheel rotor and wind the rope several turns clockwise. Then, give a strong pull straight out to crank the engine. Repeat if necessary.
5-7
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107013
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EMN50011
TREATMENT OF SUBMERGED MOTOR
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.
1) Thoroughly wash away mud, salt, seaweed, etc. with fresh water.
2) Remove the spark plugs and face the spark plug holes downward to allow any water, mud or contaminants to drain.
3) Drain the fuel from the carburetor.
4) Feed fogging oil or engine oil through the carburetors and spark plug holes while cranking with the manual starter or emergency starter rope.
5) 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.
107014
5-8
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EMP00010
Chapter 6
INDEX
INDEX........................................................6-1
1
2
3
4
5
6
Page 86
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EMP10010
INDEX
A
Adjusting trim angle..............................3-18
Air vent screw...........................................2-2
B
Basic boating rules (Rules of the road) ..1-6
Breaking in (running in) engine..............3-8
C
Carrying handle........................................2-7
Changing gear oil...................................4-18
Checking bolts and nuts........................4-21
Checking fuel system ............................4-11
Checking painted surface of motor......4-21
Checking propeller.................................4-16
Checking top cowling ............................4-10
Checking wiring and connectors..........4-14
Choke knob...............................................2-4
Clamping the outboard motor................3-4
Cleaning and adjusting spark plug ........4-9
Cleaning and Anti-corrosion Measure...4-6
Cleaning fuel tank ..................................4-19
Cleaning the outboard motor ...............4-21
Coating the boat bottom .......................4-21
Cruising in other conditions .................3-24
Cruising in salt water.............................3-24
Cruising in shallow water .....................3-20
Cruising in turbid water ........................3-24
E
Emission control information.................1-2
Engine oil ................................................1-11
Engine stop button ..................................2-3
Engine stop lanyard switch.....................2-3
Exhaust leakage .....................................4-14
F
Filling fuel .................................................3-5
Filling fuel and engine oil........................3-5
Filling fuel tank .........................................4-4
Flushing cooling system and fogging
engine........................................................4-5
Flushing in a water tank ..........................4-5
Forward...................................................3-14
Fuel hose joint..........................................2-2
Fuel meter.................................................2-2
Fuel tank....................................................2-2
Fuel tank cap.............................................2-2
Fueling instructions ...............................1-10
G
Gasohol...................................................1-11
Gasoline ..................................................1-11
Gasoline (petrol) and oil mixing.............3-6
Gear shift lever.........................................2-2
Greasing..................................................4-15
I
Identification numbers record ................1-1
Impact damage ........................................5-5
Important labels .......................................1-5
Inspecting and replacing anode(s).......4-20
Inspecting fuel filter ...............................4-12
Inspecting idling speed .........................4-13
Installation ................................................3-1
Installing the propeller ..........................4-17
L
Lubrication................................................4-6
M
Main components....................................2-1
Maintenance chart ...................................4-8
Motor exterior ........................................4-21
Mounting height ......................................3-3
Mounting the outboard motor ...............3-2
O
Operations of controls and other
functions ...................................................2-2
Outboard motor serial number ..............1-1
P
Periodic maintenance..............................4-7
Pre-operation checks ...............................3-7
Propeller checking point .......................4-16
Propeller selection .................................1-12
R
Recoil starter handle................................2-4
Removing the propeller ........................4-17
6-1
Page 87
Replacement parts...................................4-7
Reverse ...................................................3-15
S
Safety information ...................................1-3
Shifting....................................................3-14
Specifications ...........................................4-1
Start-in-gear protection.........................1-13
Starter will not operate............................5-6
Starting engine.......................................3-10
Steering friction adjustment ...................2-6
Stopping engine.....................................3-16
Storing outboard motor ..........................4-4
T
Temporary action in emergency............5-5
Throttle control grip.................................2-4
Throttle friction adjustment ....................2-5
Throttle indicator .....................................2-4
Tiller handle..............................................2-5
Tilt lock mechanism.................................2-6
Tilt support bar.........................................2-7
Tilting up/down ......................................3-22
Top cowling lock lever ............................2-7
Trailering outboard motor ......................4-3
Transporting and storing outboard
motor.........................................................4-3
Treatment of submerged motor ............5-8
Trim angle adjusting rod.........................2-6
Trim angle settings and boat
handling ..................................................3-19
Trimming outboard motor....................3-17
Troubleshooting.......................................5-1
W
Warming up engine...............................3-13
Warning labels .........................................1-5
Warranty information .................Next page
Water leakage.........................................4-14
E
6-2
Page 88
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
Page 89
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. (714) 761-7439 Fax No. (714) 761-7559
Yamaha Motor Canada Ltd. 480 Gordon Baker Road Toronto, Ontario M2H 3B4 Attention: Customer Relations Department
Telephone No. (416) 498-1911 Fax No. (416) 491-3122
Page 90
EMU00912*
YAMAHA MOTOR CORPORATION, U.S.A.
OUTBOARD MOTOR TWO YEAR LIMITED WARRANTY
Yamaha Motor Corporation, U.S.A. is proud of its heritage and reputation for producing products with high standards of quality and workmanship. Product excellence provides the cornerstone for our commitment to customer satisfaction. The Yamaha Outboard Limit­ed Warranty is your assurance of this commitment.
This warranty provides you with protection against the expense of repairs for your outboard motor that are required as a result of defects in materials or workmanship. When maintained and utilized in the prescribed manner, you can count on your Yamaha outboard to provide reliable service.
This warranty provides you with specific coverage and notes your responsibilities in maintaining and operating your outboard. Please take the time to read and become familiar with this warranty.
PERIOD OF WARRANTY. Any new Yamaha 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 two (2) years from 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, propellers, and wiring external from the motor unit, will be warranted for one (1) year from the date of purchase for either pleasure or commercial use. Replacement parts used in war­ranty repairs will be warranted for the balance of the applicable warranty period.
The second 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 and Reed Valve Assembly 8 Carburetor Assembly and its Related Components 8 Fuel and Oil Pump Assemblies 8 Ignition System (Standard and Microcomputer) 8 Precision Blend ® System
Bracket Section
8 Bracket System 8 Power Trim and Tilt Assembly
Lower Unit Section
8 Exhaust System 8 Upper Casing 8 Lower Unit Assembly
The warranty described here applies to outboard motor purchased and registered for use in the United States only excluding its territo­ries. For warranty provisions outside the United States, contact the particular country’s local Yamaha distributor.
WARRANTY REGISTRATION. To be eligible for warranty coverage, the outboard motor must first be registered with Yamaha Motor Cor­poration, U.S.A. A warranty registration form is provided in the Owner`s Manual with each outboard. This form must be completed and mailed to Yamaha by either the selling dealer or the purchaser. Warranty registration can also be accomplished by any authorized Yamaha outboard 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 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 marine 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, improper mounting of the motor, installa-
tion of parts or accessories that are not equivalent in design and quality to genuine Yamaha parts.
3. Operation of the motor at an rpm other than specified, improper propeller selection, use of lubricants, oils, and fuel/oil mixtures
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 organisms on motor surfaces.
6. Normal deterioration.
Page 91
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 dealer are excluded from warranty coverage.
Specific parts excluded from the second 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 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.
EMISSION CONTROL SYSTEM WARRANTY. Yamaha warrants to the ultimate purchaser and each subsequent purchaser, that this engine is designed, built, and equipped so as to conform at the time of sale with applicable regulations under section 213 of the Clean Air Act and this engine is free from defects in materials and workmanship which cause said engine to fail to conform with applicable regulations for one (1) year from date of purchase.
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 LIMITATION 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.
WARRANTY QUESTIONS AND ANSWERS
Q. What costs are my responsibility during the warranty period? A. The customer`s responsibility includes all costs of normal maintenance services, non-warranty repairs, accident and collision dam-
ages.
Q. What are some examples of ``abnormal’’ strain, neglect, or abuse? A. 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. Does the warranty cover incidental costs such as towing or transportation due to a failure? A. No. The warranty is limited to repair of the machine itself.
Q. May I perform any or all of the recommended maintenance shown in the Owner’s Manual instead of having the dealer do them? A. 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. 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? A. 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. What responsibility does a Yamaha outboard dealer have under this warranty? A. 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. Is the warranty transferable to second owners? A. 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.
Post Office Box 6555
Cypress, California 90630
Page 92
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
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.
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.
This will ensure that Yamaha Motor Corporation, U.S.A. has an up-to-date registration record in accordance with federal law.
P.O.Box 6555
Cypress, California 90630
CHANGE OF ADDRESS
WARRANTY DEPARTMENT
P.O.Box 6555
Cypress, California 90630
Page 93
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.
Page 94
Printed in Japan March 2003-0.5 × 1 !
63V-28199-16
(9.9FMH, 15FMH) (E)
Printed on recycled paper
Page 95
YAMAHA MOTOR CO., LTD. MADE IN JAPAN PAYS D'ORIGINE JAPON
OUTBOARD MOTOR WARRANTY REGISTRATION
ENREGISTREMENT DE LA GARANTIE DU MOTEUR HORS-BORD
Please complete and mail this card. This information is necessary to accurately register your unit for warranty.
Veuillez signer ci-dessous pour attester que le montage et l’inspection ont été faits dans le respect des directives d’inspection et
OUTBOARD MOTOR MODEL AND SERIAL NUMBER (From I.D. label on clamp bracket)
MODÉLE ET NO. DE SÉRIE DU MOTEUR HORS-BORD (sur l’étiquette d’identification de la presse de fixation)
DATE SOLD
DATE DE LIVRAISON
OWNER’S NAME
NOM DU PROPRIÉTAIRE
ADDRESS
ADRESSE
PHONE NUMBER ( )
NUMÉRO DE TÉLÉPHONE
que la marche à suivre pour la garantie et l’entretien a été expliquée à l’acheteur au détail.
(For Dealer Use Only)
(A l’usage du concessionnaire)
YAMAHA DEALER NUMBER
NO. DU CONCESSIONNAIRE YAMAHA
DEALER NAME
NOM DU CONCESSIONNAIRE
USAGE (Check One)
UTILISATION
MONTH DAY YEAR
MOIS JOUR ANNÉE
FIRST LAST
PRÉNOM NOM DE FAMILLE
STREET
RUE
CITY STATE/PROVINCE ZIP
VILLE PROVINCE CODE POSTAL
(En cocher un.)
PLEASURE
LOISIR
COMMERCIAL
COMMERCIAL
Page 96
ATTN: WARRANTY DEPARTMENT
PLACE POSTAGE HERE
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