Yamaha F6B, F8B, T8B, F8C, F6C Ower's Manual

...
F6B
EMU01449
E
TO THE OWNER
Thank you for choosing a Yamaha outboard motor. This Owner’s manual contains infor­mation needed for proper operation, mainte­nance and care. A thorough understanding of these simple instructions will help you obtain maximum enjoyment from your new Yamaha. If you have any question about the operation or maintenance of your outboard motor, please consult a Yamaha dealer.
In this Owner’s Manual particularly impor­tant information is distinguished in the fol­lowing ways.
The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED!
WARNING
@
Failure to follow WARNING instructions could result in severe injury or death the machine operator, a bystander, or a person inspecting or repairing the out­board motor.
@
to
CAUTION:
A CAUTION indicates special precau­tions that must be taken to avoid damage to the outboard motor.
@
NOTE:
@
A NOTE provides key information to make procedures easier or clearer.
@
Yamaha continually seeks advancements in product design and quality. Therefore, while this manual contains the most current prod­uct information available at the time of print­ing, there may be minor discrepancies between your machine and this manual. If there is any question concerning this man­ual, please consult your Yamaha dealer.
NOTE:
@
The F8MH, T8PR and their standard acces­sories are used as a base for the explana­tions and illustrations in this manual. Therefore, some items may not apply to every model.
@
EMU01446
©2002 by Yamaha Motor Corporation, USA
F6B, F8B, T8B
OWNER’S MANUAL
1st Edition, March 2002
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-18626-05-03
EMU00003
CONTENTS
E
GENERAL INFORMATION
BASIC COMPONENTS
OPERATION
1
2
3
MAINTENANCE
TROUBLE RECOVERY
INDEX
READ THIS OWNERS MANUAL CAREFULLY
4
5
6
BEFORE OPERATING YOUR OUTBOARD MOTOR.
EMU00004
Chapter 1
GENERAL
INFORMATION
IDENTIFICATION NUMBERS RECORD
Outboard motor serial number ................1-1
Key number .............................................1-1
.....................................................1-1
E
1
EMISSION CONTROL INFORMATION
North american models............................1-2
Star labels.................................................1-3
SAFETY INFORMATION
IMPORTANT LABELS
Warning labels .........................................1-6
Caution labels...........................................1-6
BASIC BOATING RULES (Rules of the road)
Steering and sailing rules and sound
signals ......................................................1-7
Rules when encountering vessels........... 1-8
Other special situations............................1-9
FUELING INSTRUCTIONS
Gasoline .................................................1-12
.....................................1-7
...........................1-4
...............................1-6
......................1-11
....1-2
ENGINE OIL
BATTERY REQUIREMENT
PROPELLER SELECTION
START-IN-GEAR PROTECTION
..............................................1-13
.....................1-14
......................1-15
............1-16
E
EMU00005
IDENTIFICATION NUMBERS
RECORD
EMU00007
OUTBOARD MOTOR SERIAL NUMBER
The outboard motor serial number is stamped on the label attached to the port side of the clamp-bracket. Record your outboard motor serial number in the spaces provided to assist you in ordering spare parts from your Yamaha dealer or for reference in case your outboard motor is stolen.
1
Outboard motor serial number
EMU00008
KEY NUMBER
If a main key switch is equipped with the motor, the key identification number is stamped on your key as shown in the illus­tration. Record this number in the space provided for reference in case you need a new key.
1-1
1
Key number
E
EMU01385
EMISSION CONTROL
INFORMATION
EMU01444
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
New Technology ; (4-stroke/HPDI) EM
Manufactured date label
This label is attached to the clamp bracket.
2
Manufactured date label
1-2
E
EMU01389
STAR LABELS
Your outboard motor is labeled with a Cali­fornia Air Resources Board (CARB) star label. See below for a description of your particular label.
1
Star label
One Star - Low Emission
The one-star label identifies engines that meet the Air Resources Board’s 2001 exhaust emission standards. Engines meet­ing these standards have 75% lower emis­sions than conventional carbureted two­stroke engines. These engines are equiva­lent to the U.S. EPAs 2006 standards for marine engines.
Two Stars - Very Low Emission
The two-star label identifies engines that meet the Air Resources Board’s 2004 exhaust emission standards. Engines meet­ing these standards have 20% lower emis­sions than One Star-Low-Emission engines.
Three Stars - Ultra Low Emission
The three-star label identifies engines that meet the Air Resources Board’s 2008 exhaust emission standards. Engines meet­ing these standards have 65% lower emis­sions than One Star-Low-Emission engines.
1-3
E
EMU00917
SAFETY
INFORMATION
Before mounting or operating the out­board motor, read this entire manual. Reading it should give you an under­standing of the motor and its operation.
Before operating the boat, read any owner’s or operator’s manuals supplied with it and all labels. Be sure you under­stand each item before operating.
Do not overpower the boat with this out­board motor. Overpowering the boat could result in loss of control. The rated power of the outboard should be equal to or less than the rated horsepower capac­ity of the boat. If the rated horsepower capacity of the boat is unknown, consult the dealer or boat manufacturer.
Do not modify the outboard. Modifications could make the motor unfit or unsafe to use.
Never operate after drinking alcohol or taking drugs. About 50% of all boating fatalities involve intoxication.
Have an approved personal flotation device (PFD) on board for every occu­pant. It is a good idea to wear a PFD whenever boating. At a minimum, children and non-swimmers should always wear PFDs, and everyone should wear PFDs when there are potentially hazardous boating conditions.
Gasoline is highly flammable, and its vapors are flammable and explosive. Handle and store gasoline carefully. Make sure there are no gas fumes or leaking fuel before starting the engine.
This product emits exhaust gases which contain carbon monoxide, a colorless, odorless gas which may cause brain damage or death when inhaled. Symp­toms include nausea, dizziness, and drowsiness. Keep cockpit and cabin areas well ventilated. Avoid blocking exhaust outlets.
Check throttle, shift, and steering for proper operation before starting the engine.
Attach the engine stop switch lanyard to a secure place on your clothing, or your arm or leg while operating. If you acciden­tally leave the helm, the lanyard will pull from the switch, stopping the engine.
Know the marine laws and regulations where you will be boating - and obey them. Refer to the RULES OF THE ROAD section for basic boating rules.
Stay informed about the weather. Check weather forecasts before boating. Avoid boating in hazardous weather.
Tell someone where you are going: leave a Float Plan with a responsible person. Be sure to cancel the Float Plan when you return.
Use common sense and good judgment when boating. Know your abilities, and be sure you understand how your boat han­dles under the different boating conditions you may encounter. Operate within your limits, and the limits of your boat. Always operate at safe speeds, and keep a care­ful watch for obstacles and other traffic.
Always watch carefully for swimmers dur­ing the engine operation.
Stay away from swimming areas.
1-4
When a swimmer is in the water near you shift into neutral and shut off the engine.
Be informed about boating safety. Addi­tional publications and information can be obtained from many organizations, includ­ing the following:
United States Coast Guard
Consumer Affairs Staff (G-BC) Office of Boating, Public, and Consumer Affairs U.S. Coast Guard Headquarters Washington, D.C. 20593-0001 Boating Safety Hotline: 1-800-368-5647
National Marine Manufacturers Associa­tion (NMMA)
401 N. Michigan Ave. Chicago, Il 60611
E
Marine Retailers Association of America
155 N. Michigan Ave. Chicago, Il 60601
1-5
EMU00014
IMPORTANT LABELS
WARNING LABELS
1
2
E
CAUTION LABELS
3
1-6
EMU00015
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.
E
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 right-of­way has the duty to take positive and timely action to stay out of the way of the Stand-On vessel. Normally, you should not cross in front of the vessel with the right-of-way. You should slow down or change directions briefly and pass behind the other vessel. You should always move in such a way that the operator of the other vessel can see what you are doing.
The general prudential rule
This rule is called Rule 2 in the International Rules and says,
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 right-of-way is called the “give-way or burdened ves- sel. These rules determine which vessel has the right-of-way, and what each vessel should do.
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.
1-7
E
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 traveling across the other ves­sel’s path)
Overtaking
(you are passing or being passed by another vessel)
In the following illustration, your boat is in the center. You should give the right-of-way to any vessels shown in white area (you are the Give-Way vessel). Any vessels in the shaded area must yield to you (they are the Give-Way vessels). Both you and the meet­ing vessel must alter course to avoid each other.
avoid an accident. You should keep the other vessel on your port (left) side. This rule doesnt apply if both of you will clear one another if you continue on your set course and speed.
Crossing
When two power driven vessels are crossing each other’s path close enough to run the risk of collision, the vessel which has the other on the starboard (right) side must keep out of the way of the other. If the other ves­sel is on your right, you must keep out of its way; you are the Give-Way vessel. If the other vessel is on your port (left) side, remember that you should maintain course and direction, provided the other vessel gives you the right-of-way as it should.
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 right­of-way! Both of you should alter course to
Overtaking
If you are passing another vessel, you are the Give-Way vessel. This means that the
1-8
E
other vessel is expected to maintain its course and speed. You must stay out of its way until you are clear of it. Likewise, if another vessel is passing you, you should maintain your speed and direction so that the other vessel can steer itself around you.
OTHER SPECIAL SITUATIONS
There are three other rules you should be aware of when driving your boat around other vessels.
Narrow channels and bends
When navigating in narrow channels, you should keep to the right when it is safe and practical to do so. If the operator of a power­driven vessel is preparing to go around a bend that may obstruct the view of other water vessels, the operator should sound a prolonged blast on the whistle (4 to 6 sec­onds). If another vessel is around the bend, it too should sound the whistle. Even if no reply is heard, however, the vessel should still proceed around the bend with caution. If you navigate such waters with your boat, you will need to carry a portable air horn, available from local marine supply stores.
Fishing vessel right-of-way
All vessels which are fishing with nets, lines or trawls are considered to be fishing ves­sels under the International Rules. Vessels with trolling lines are not considered fishing vessels. Fishing vessels have the right-of­way 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.
1-9
Remember, markings may vary by geo­graphic location. Always consult local boat­ing authorities before driving your boat in unfamiliar waters.
E
1-10
E
EMU00016
FUELING INSTRUCTIONS
WARNING
@
GASOLINE AND ITS VAPORS ARE HIGHLY FLAMMABLE AND EXPLOSIVE!
Do not smoke when refueling, and
keep away from sparks, flames, or other sources of ignition. Stop engine before refueling.
Refuel in a well-ventilated area. Refuel
portable fuel tanks off the boat. Take care not to spill gasoline. If gaso-
line spills, wipe it up immediately with dry rags. Do not overfill the fuel tank.
Tighten the filler cap securely after re-
fueling. If you should swallow some gasoline
inhale a lot of gasoline vapor, or get gasoline in your eyes, get immediate medical attention. If any gasoline spills onto your skin,
immediately wash with soap and water. Change clothing if gasoline spills on it. Touch the fuel nozzle to the filler open-
ing or funnel to help prevent electro­static sparks.
@
CAUTION:
@
Use only new clean gasoline which has been stored in clean containers and is not contaminated with water or foreign matter.
@
1-11
E
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.
1-12
E
EMU01769
ENGINE OIL
Recommended engine oil: 4-stroke motor oil with a combination of cor­responding SAE and API as shown in the chart.
Engine oil quantity: See Chapter 4, “Specifications.
CAUTION:
@
All 4-stroke engines are shipped from the factory without engine oil.
@
1-13
E
EMU01775
BATTERY REQUIREMENT
CAUTION:
@
Do not use a battery that does not meet the specified capacity. If a battery which does not meet specifications is used, the electric system could perform poorly or be overloaded, causing electric system damage.
@
For electric start models, choose a battery which meets the following specifications.
EMU01859
Minimum cold cranking amps (CCA/SAE): 245 amps at -18°C (-0.4°F) Minimum marine cranking amps (MCA/ABYC): 323 amps at 0°C (32°F) Minimum reserve capacity (RC/SAE): 52 minutes
EMU01783¯
CAUTION:
@
A battery cannot be connected to models that do not have a rectifier or Rectifier Regulator. Models without a rectifier or Rectifier Regulator: F6MHB/F8MHB
If you wish to use a battery with the
above models, install an optional Rec­tifier Regulator.
@
1-14
E
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.
NOTE:
@
At full throttle and under a maximum boat load, the engine’s rpm should be within the upper half of the full throttle operating range, as listed in “SPECIFICATIONS on page 4-1. Select a propeller which fulfills this require­ment. If operating under conditions which allow the engine’s rpm to rise above the maximum rec- ommended range (such as light boat loads), reduce the throttle setting to maintain the rpm in the proper operating range.
@
1-15
E
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.
1-16
-MEMO-
E
1-17
E
EMU00037
Chapter 2
BASIC COMPONENTS
MAIN COMPONENTS
OPERATIONS OF CONTROLS AND OTHER FUNCTIONS
Fuel tank...................................................2-3
Choke knob ..............................................2-3
Recoil starter handle
(if equipped) .............................................2-4
Starter button (for tiller control model)..... 2-4
Multifunction tiller handle .........................2-4
Remote control.........................................2-8
Steering friction adjusting lever..............2-13
Trim angle adjusting rod ........................2-13
Power trim/tilt switch ..............................2-14
Tilt lock mechanism
(for manual tilt model) ............................2-14
Tilt support knob.....................................2-15
Tilt support bar .......................................2-15
Power tilt unit..........................................2-15
Top cowling lock lever............................2-16
Flushing device ......................................2-16
Warning indicator(s)...............................2-16
................................2-1
..................................2-3
2
WARNING SYSTEM
Low oil pressure warning.......................2-17
.................................2-17
EMU01206
F6A/F8A
E
MAIN COMPONENTS
1
Top cowling
2
Top cowling lock lever
3
Anti-cavitation plate
*4Propeller
5
Cooling water inlet
6
Oil drain bolt
7
Trim angle adjusting rod
8
Clamp bracket
9
Recoil starter handle
0
Warning indicator
A
Engine stop lanyard switch/ Engine stop button
B
Gear shift lever
C
Tiller handle
D
Steering friction adjusting lever
E
Tilt lock lever
F
Clamp screw
G
Rope attachment
H
Flushing device
I
Choke knob
* May not be exactly as shown; also may not be in-
cluded as standard equipment on all models.
2-1
T8A
E
1
Top cowling
2
Top cowling lock lever
3
Anti-cavitation plate
4
Propeller
5
Cooling water inlet
6
Oil drain bolt
7
Trim angle adjusting rod
8
Clamp bracket *9Power tilt switch *0Recoil starter handle
A
Warning indicator *BStarter button *CEngine stop layard switch/
Engine stop button
*DGear shift lever *ETiller handle *FSteering friction adjusting lever *GTilt lock lever
H
Clamp screw
I
Rope attachment
J
Flushing device
K
Choke knob
*LRemote control box
* May not be exactly as shown; also may not be in-
cluded as standard equipment on all models.
2-2
E
EMU00039
OPERATIONS OF CONTROLS
AND
OTHER FUNCTIONS
EMU01465
FUEL TANK
If your model included a portable fuel tank, its parts and functions are as follows.
1
Fuel hose joint
2
Fuel meter (if equipped)
3
Fuel tank cap
4
Air vent screw (if equipped)
EMU00042
Fuel Hose Joint
This connector is provided for connecting or disconnecting fuel hose.
EMU01531
Fuel Meter
This meter is on the fuel tank cap. It shows the approximate amount of fuel remaining in the tank.
EMU00045
Fuel Tank Cap
This cap is for filling fuel. To remove it, turn it counterclockwise.
EMU00046
Air Vent Screw
This screw is on the fuel tank cap. To loosen it, turn it counterclockwise.
2-3
E
EMU00057
Tiller control model
CHOKE KNOB
Pulling out this knob (setting it to ON) sup­plies a rich mixture required to start the engine.
EMU00059
RECOIL STARTER HANDLE (If equipped)
Pull the handle gently until resistance is felt. Then vigorously pull the handle straight out to crank the engine to start it.
EMU00060
STARTER BUTTON (for Tiller control model) (T8PH)
When you push the starter button, the elec­tric starter motor cranks the engine to start it.
2-4
E
EMU01122¯
MULTIFUNCTION TILLER HANDLE
The tiller handle centralized most of func­tions for the outboard motor operation.
1
Tiller handle
2
Gear shift lever
3
Throttle control grip
4
Throttle indicator
5
Throttle friction adjusting knob
6
Engine stop lanyard switch / Engine stop but­ton (If equipped)
7
Main switch (if equipped)
8
Power tilt switch (if equipped)
EMU00079
Tiller handle
Moving the tiller handle sideways to adjust the steering direction.
EMU00080
Gear shift lever
Turning the gear-shift lever forward (bow side) engages the clutch with the forward gear so that the boat moves ahead. Turning the lever backward (stern side) engages the reverse gear so that the boat moves astern.
2-5
1
Neutral
2
Forward
3
Reverse
E
EMU00081
Throttle control grip
The throttle control grip is on the tiller han­dle. Turn the grip counterclockwise to increase speed and clockwise to decrease speed.
EMU00082
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
EMU01157
Throttle Friction Adjusting Knob
A friction device in the tiller handle provides adjustable resistance to movement of the throttle grip, and can be set according to operator preference.
Resistance Knob
Increase Turn clockwise
Decrease Turn counterclockwise
When constant speed is desired, tighten the adjusting knob to maintain the desired throt­tle setting.
WARNING
@
Do not overtighten the friction adjusting knob. If there is too much resistance, it may be difficult to move the throttle grip, which could result in an accident.
@
2-6
E
EMU00933
Engine Stop Lanyard Switch
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 operators 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.
WARNING
@
Attach the lanyard to a secure place on
your clothing, your arm or leg while operating. 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. 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 lock­plate removed.
@
EMU00085
Engine Stop Button
Pushing this button opens the ignition circuit and stops the engine.
2-7
E
EMU01323
Power Tilt Switch
The power tilt adjusts the motor angle in relation to the transom. The power tilt switch is located on the tiller handle. Pushing the switch UP tilts the motor up. Pressing the switch DN tilts the motor down. When the switch button is released, the motor will stop in its current position.
NOTE:
@
Refer to the section TILTING UP/DOWN for instructions on usage.
@
EMU00094
REMOTE CONTROL
Both the shifter and the throttle are actuated by the remote control lever. In addition, this remote control also has the electrical switches.
1
Remote control lever
2
Neutral interlock trigger
3
Neutral throttle lever
4
Main switch / Choke switch
5
Engine stop lanyard switch
6
Power tilt switch
7
Throttle friction adjusting screw
2-8
E
EMU00098
Remote Control Lever
Moving the lever forward from the Neutral position engages Forward gear. Pulling the lever back from Neutral engages Reverse. The engine will continue to run at idle until the lever is moved about 35° (a detent can be felt). Moving the lever farther opens the throttle, and the engine will begin to acceler­ate.
1
Neutral
2
Forward
3
Reverse
4
Shift
5
Fully closed
6
Throttle
7
Fully open
EMU00099
Neutral Interlock Trigger
To shift out of Neutral, the neutral interlock trigger of the remote control lever must first be pulled up.
2-9
E
EMU00100
Neutral Throttle Lever
To open the throttle without shifting into either Forward or Reverse, place the remote control lever in the Neutral position and lift the neutral throttle lever.
NOTE:
@
The neutral throttle lever will operate only when the remote control lever is in Neutral. The remote control lever will operate only when the neutral throttle lever is in the closed position.
@
1
Fully open
2
Fully closed
EMU00101
Main switch
The main switch controls the ignition sys­tem; its operation is described below.
OFF
Electrical circuits switched off. (The key can be removed.)
ON
Electrical circuits switched on. (The key cannot be removed.)
START
Starter-motor will turn and start engine. (When the key is released, it returns auto­matically to “ON”.)
2-10
E
EMU00102
Choke Switch
While the main switch is being pressed in at ON or START, the choke system will switch on, to supply a rich mixture required to start the engine. (When the key is released, it will switch off automatically.)
EMU00934
Engine Stop Lanyard Switch
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 operators 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.
WARNING
@
Attach the lanyard to a secure place on
your clothing, your arm or leg while operating. 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. 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 lock­plate removed.
@
2-11
E
EMU01316
Power Tilt Switch
The power tilt adjusts the motor angle in relation to the transom. The power tilt switch is located on the remote control lever grip. Pushing the switch “UP” tilts the motor up. Pressing the switch “DN” tilts the motor down. When the switch button is released, the motor will stop in its current position.
NOTE:
@
Refer to the section TILTING UP/DOWN for instructions on usage.
@
EMU01155
Throttle Friction Adjusting Screw
A friction device in the remote control box provides adjustable resistance to move­ment of the remote control lever, and can be set according to operator preference. An adjusting screw is located on the front of the remote control box.
Resistance Screw
Increase Turn clockwise
Decrease Turn counterclockwise
WARNING
@
Do not overtighten the friction adjusting screw. If there is too much resistance, it may be difficult to move the lever, which could result in an accident.
@
2-12
E
EMU01295
STEERING FRICTION ADJUSTING LEVER
A friction device provides resistance to steering movement. This is adjustable according to operator preference.
Resistance Lever
Increase Turn to port
Decrease Turn to starboard
WARNING
@
Do not overtighten the friction adjusting lever. 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.
2-13
E
EMU01501¯
POWER TILT SWITCH
The power tilt adjusts the motor angle in relation to the transom. The power tilt switch is located on top of the steering bracket. Pushing the switch “UP” trims the motor up, then tilts the motor up. Pressing the switch DN tilts the motor down and trims the motor down. When the switch button is released, the motor will stop in its current position.
WARNING
Use the power tilt switch located on top of the steering bracket only when the boat is at a complete stop with the engine off. Attempting to use the cowl­ing-mounted power tilt switch while the boat is moving could increase the risk of falling overboard and could distract the operator, increasing the risk of collision with another boat or an obstacle.
NOTE:
Refer to the section Tilting Up/Down for instructions on usage.
EMU00152
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 up position. To release it, push the tilt-lock lever down.
2-14
1
Tilt-lock lever
E
EMU00155
TILT SUPPORT KNOB
Power tilt model
To keep the outboard motor in the tilted-up position, push the tilt support knob under the swivel bracket.
EMU00156¯
TILT SUPPORT BAR
The tilt support bar 1 keeps the outboard motor in the tilted up position.
EMU01348
POWER TILT UNIT
This unit tilts the motor up and down and is controlled via the power tilt switch.
Power tilt unit
1
Power tilt motor
2
CAUTION:
@
Do not step on or exert pressure on the power tilt motor. The power tilt unit could be damaged as a result.
@
2-15
E
EMU00161
TOP COWLING LOCK LEVER
To remove the engine top cowling, pull up the lock lever. Then lift off the cowling. When replacing the cowling, check to be sure it fits properly in the rubber seal. Then lock the cowling again by moving the lever down­ward.
EMU01701
FLUSHING DEVICE
This device 1 is used to clean the cooling water passages of the motor using a garden hose and tap water.
NOTE:
@
Refer to CLEANING COOLING-WATER PASSAGES in Chapter 4 for instructions on usage.
@
EMU01128
WARNING INDICATOR(S)
If the engine develops a condition monitored by the warning system, an indicator will come on. Refer to the WARNING SYSTEM section for details.
Warning indicator(s)
1
2-16
E
EMU00169
WARNING SYSTEM
CAUTION:
@
Do not continue to operate the engine if the warning device has activated. Con­sult your Yamaha dealer if the problem cannot be located and corrected.
@
EMU00173
LOW OIL PRESSURE WARNING
If oil pressure drops too low, the warning device will activate.
(❍):Included (—):N/A
Activation of
warning device
Tiller
control
model
Remote
control
model
Engine speed will au­tomatically decrease
❍❍
to about 2,000 r/min.
The low oil pressure warning indicator will
❍❍
come on.
The buzzer will sound.
If the warning system has been activated, stop the engine as soon as it is safe to do so. Check oil level and add oil as needed. If the oil level is correct, consult your Yamaha dealer.
CAUTION:
@
Do not continue to run the engine if the low oil pressure lamp is “ON”. Serious engine damage may occur.
@
2-17
EMU00174
E
Chapter 3
OPERATION
INSTALLATION
Mounting the outboard motor ..................3-2
Clamping the outboard motor.................. 3-4
BREAKING IN (RUNNING IN) ENGINE
PRE-OPERATION CHECKS
Checking the engine oil level...................3-7
FILLING FUEL
STARTING ENGINE
Procedure for tiller control model...........3-10
Procedure for remote control model......3-13
WARMING UP ENGINE
CHECKING POINTS AFTER STARTING ENGINE
SHIFTING
Forward ..................................................3-16
Reverse ..................................................3-17
STOPPING ENGINE
..................................................3-16
..........................................3-1
.....................3-6
............................................3-8
...................................3-9
...........................3-15
.................................3-15
.................................3-18
....3-5
3
TRIMMING OUTBOARD MOTOR
Adjusting trim angle................................3-20
TILTING UP/DOWN
Procedure for tilting up...........................3-25
Procedure for tilting down......................3-25
Procedure for tilting up...........................3-26
Procedure for tilting down......................3-27
CRUISING IN SHALLOW WATER
Procedure...............................................3-29
Returning to original position .................3-29
CRUISING IN SHALLOW WATER
Procedure...............................................3-30
CRUISING IN OTHER CONDITIONS
Cruising in salt water..............................3-32
Cruising in turbid water ..........................3-32
..................................3-24
...........3-19
..........3-28
..........3-30
......3-32
E
EMU00175
INSTALLATION
CAUTION:
@
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
E
EMU01478
MOUNTING THE OUTBOARD MOTOR
WARNING
@
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. 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.
@
WARNING
@
Improper mounting of the outboard motor could result in hazardous condi­tions such as poor handling, loss of con­trol, or fire hazards. Observe the following:
For permanently mounted models,
your dealer or other person experi­enced in proper rigging should mount the motor. If you are mounting the motor yourself, you should be trained by an experienced person. For portable models, your dealer or
other person experienced in proper outboard motor mounting should show you how to mount your motor.
@
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.
3-2
1
Center line (keel line)
E
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 mounting­height is too low, the water-resistance will increase and thereby reduce engine effi­ciency. Mount the engine so that the anti­cavitation plate is between the bottom of the boat and a level 25 mm (1 in.) below it.
NOTE:
@
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.
Refer to the section TRIMMING OUT­BOARD MOTOR for instructions on set­ting the trim angle of the outboard.
@
3-3
E
EMU01318¯
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.
WARNING
@
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. Secure the clamp bracket to the transom with the bolts provided with the out­board. For details, consult your dealer.
WARNING
@
Avoid using bolts, nuts or washers other than those contained in the engine pack­aging. If used, they must be of at least the same quality of material and strength and must be tightened securely. After tightening, test run the engine and check their tightness.
@
3-4
1
Motor mounting parts
E
EMU00224
BREAKING IN (RUNNING IN)
ENGINE
Your new engine requires a period of break­in (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.
CAUTION:
@
Failure to follow the break-in (running-in) procedure may result in reduced engine life or even severe engine damage.
@
Break-in (running-in) time: 10 hours
EMU01367¯
Run the engine under load (in gear with a propeller installed) as follows.
1) For the first hour of operation: Run the engine at 2,000 r/min or at approximately half throttle.
2) For the second hour of operation: Run the engine at 3,000 r/min or at approximately three-quarter throttle.
3) For the next eight hours of operation: Avoid continuous operation at full throt­tle for more than five minutes at a time.
4) After the first 10 hours: Operate the engine normally.
3-5
E
EMU00204
PRE-OPERATION CHECKS
WARNING
@
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.
@
CAUTION:
@
Do not start the engine out of water. Overheating and serious engine damage can occur.
@
EMU00206
Fuel
Check to be sure you have plenty of fuel for your trip.
Make sure there are no fuel leaks or gas­oline fumes.
Check fuel line connections to be sure they are tight.
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.
EMU00208
Oil
Check the level of the oil in the sump with the dipstick. If necessary, add oil to bring the level up to the upper mark.
3-6
EMU00209
Controls
Check throttle, shift, and steering for proper operation before starting the engine.
The controls should work smoothly, with­out binding or unusual free play.
Look for loose or damaged connections.
Check operation of the starter and stop switches when the outboard motor is in the water.
EMU00210
Engine
Check the engine and engine mounting.
Look for loose or damaged fasteners.
Check the propeller for damage.
E
EMU01436
CHECKING THE ENGINE OIL LEVEL
1) Put the outboard motor in an upright position (not tilted).
2) Pull out the oil dipstick and wipe it clean.
3) Completely re-insert the dipstick and pull out it again.
4) Check the oil level using the dipstick to be sure the level falls between the upper and lower marks. Fill with oil if it is below the lower mark, or drain to the specified level if it is above the upper mark.
1
Oil dipstick
2
Lower level mark
3
Upper level mark
3-7
E
EMU00202
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.
EMU00203
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-ring-land area, and fuel sys­tem components. Follow product labeling for use instructions.
3-8
E
EMU01461
STARTING ENGINE
WARNING
@
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. 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. This product emits exhaust gases
which contain carbon monoxide, a col­orless, odorless gas which may cause brain damage or death when inhaled. Symptoms include nausea, dizziness, and drowsiness. Keep cockpit and cabin areas well ventilated. Avoid blocking exhaust outlets.
@
1) 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 from the fuel tank.
@
3) Squeeze the primer bulb with the outlet
end up until you feel it become firm.
3-9
E
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.
WARNING
@
Attach the engine stop switch lanyard
to a secure place on your clothing, your arm or leg while operating. Do not attach the lanyard to clothing
that could tear loose. Do not route the lanyard where it could become entan­gled, preventing it from functioning. Avoid accidentally pulling the lanyard
during normal operation. Loss of engine power means the loss of most steering control. Also, without engine power, the boat could slow rapidly. This could cause people and objects in the boat to be thrown forward.
@
6) Place the throttle control grip in the
START position.
3-10
E
EMU01514¯
Manual Start Models
7) Pull out the choke knob completely.
NOTE:
@
It is not necessary to use the choke when restarting a warm engine.
@
8) Pull the starter handle slowly until you
feel resistance. Then give a strong pull straight out to crank and start the engine. Repeat if necessary.
9) After the engine starts, return the starter
handle slowly to the original position before releasing it.
NOTE:
@
If the engine doesnt start on the first try, repeat the procedure. If the engine fails to start after 4 or 5 tries, open the throttle a small amount (between 1/8 and 1/4) and try again. If the engine still fails to start, refer to TROUBLESHOOTING in Chapter 5.
@
3-11
E
EMU01491
Electric Start Models
7) Pull out the choke knob completely.
NOTE:
@
It is not necessary to use the choke when restarting a warm engine.
If the choke knob is left pulled out, the engine will stall.
@
8) Push the starter button to start the
motor.
9) Immediately after the engine starts,
release the starter button to return it to the original position.
10) Return the throttle control grip slowly to
the fully closed position so that the engine does not stall.
CAUTION:
@
Never push the starter button while the
engine is running. Do not keep the starter motor turning
for more than 5 seconds. If the starter­motor is turned continuously for more than 5 seconds, the battery will be quickly discharged, thus making it impossible to start the engine. If the engine will not start after 5 seconds of cranking, release your hand from the starter button, and crank the engine again after an interval of 10 seconds.
@
NOTE:
@
When starting a cold engine, the engine needs to be warmed up. Refer to “WARM- ING UP ENGINE for details.
If the engine doesnt start on the first try, repeat the procedure. If the engine fails to start after 4 or 5 tries, open the throttle a small amount (between 1/8 and 1/4) and try again. If the engine still fails to start, refer to TROUBLESHOOTING in Chapter 5.
@
3-12
E
EMU01000
PROCEDURE FOR REMOTE CONTROL MODEL
4) Place the remote control lever in the
Neutral position. When the engine is warm, open the throttle slightly using the neutral throttle lever or the free acceler­ator. After the engine starts, return the throttle to the fully closed position.
NOTE:
@
The start-in-gear protection device prevents the engine from starting except when in Neutral.
@
5) 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.
WARNING
@
Attach the engine stop switch lanyard
to a secure place on your clothing, your arm or leg while operating. Do not attach the lanyard to clothing
that could tear loose. Do not route the lanyard where it could become entan­gled, preventing from functioning. Avoid accidentally pulling the lanyard
during normal operation. Loss of engine power means the loss of most steering control. Also, without engine power, the boat could slow rapidly. This could cause people and objects in the boat to be thrown forward.
@
6) Turn the main switch to “ON”.
3-13
E
EMU01512
Electric Start Models
7) Open the throttle slightly lifting the neu-
tral throttle lever upwards partially. You may need to change the throttle opening slightly depending on engine tempera­ture. After the engine starts, return the throt­tle to the original position.
NOTE:
@
As a starting point, lift the lever just until you feel resistance, then lift slightly more.
The operation of the neutral throttle lever is possible only when the remote control lever is in “N”.
@
8) Press in and hold the main switch to
operate the remote choke system. (The remote choke switch returns to its home position when you release your hand. Therefore, keep the switch pressed in.)
NOTE:
@
It is not necessary to use the choke when the engine is warm.
Set the choke knob to the home position, or the remote choke system will not oper­ate.
@
9) Turn the main switch to “START, and
hold it for a maximum of 5 seconds.
10) Immediately after the engine starts,
release the main switch to return it to the ON position.
CAUTION:
@
Do not turn the main switch to
START when the engine is running. Do not keep the starter-motor turning
for more than 5 seconds. The battery will rapidly become exhausted and it will be impossible for it to start the engine. If the engine does not start within 5 seconds, return the main switch to “ON”, wait 10 seconds, and then crank the engine again.
@
3-14
E
EMU01368¯
WARMING UP ENGINE
1) After the engine starts, return the choke
knob to the half-way position. For approximately the first 5 minutes after starting, warm up the engine by operat­ing at one fifth throttle or less. After the engine has warmed up, completely push in the choke knob. (Failure to do so will shorten engine life.)
NOTE:
@
If the choke knob is left pulled out after the engine starts, the engine will stall.
In temperatures of –5 °C or less, leave the choke knob completely pulled out for approximately 30 seconds after starting. Then follow the standard instructions for warming up the engine.
EMU01751
CHECKING POINTS AFTER
STARTING ENGINE
Check for a steady flow of water from the cooling-water pilot hole.
Check that the low oil pressure warning indicator light is off. (Refer to “WARNING SYSTEM section.)
After the engine has warmed up, check that the engine idling speed is stable.
CAUTION:
@
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 if the water inlet on the lower casing is blocked. If the problem cannot be found and corrected, consult your Yamaha dealer.
@
3-15
E
EMU00261
SHIFTING
WARNING
@
Before shifting, make sure there are no swimmers or obstacles in the water near you.
@
CAUTION:
@
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).
@
EMU00265
FORWARD
Tiller control model
1) Place the throttle control grip in the fully
closed position.
2) Turn the gear-shift lever quickly and
firmly from Neutral to Forward.
Remote control model
Pull up the neutral interlock trigger if equipped and move the remote control lever quickly and firmly from Neutral to Forward.
3-16
E
EMU01326¯
REVERSE
WARNING
@
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.
Tiller control model
3) Turn the gear-shift lever quickly and
firmly from Neutral to Reverse.
Remote control model
3) Pull up the neutral interlock trigger if
equipped and move the remote control lever quickly and firmly from Neutral to Reverse.
3-17
E
EMU00273
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.
EMU00277¯
1) Push and hold the engine stop button or
turn the main switch to “OFF”.
2) If the fuel joints are provided, disconnect
the fuel line from the motor after stop­ping the engine.
3) Tighten the air vent screw on the fuel
tank cap after stopping the engine, if it is equipped.
4) Remove the key if the boat will be left
unattended.
NOTE:
@
The engine can also be stopped by pulling the lanyard and removing the lock plate from the engine stop lanyard switch (then turning the main switch to “OFF”).
@
3-18
E
EMU01412
TRIMMING OUTBOARD
MOTOR
The trim angle of the outboard motor helps determine the position of the bow of the boat in the water. The correct trim angle will help improve performance and fuel economy while reducing strain on the engine. The cor­rect trim angle depends upon the combina­tion of boat, engine, and propeller. Correct trim is also affected by variables such as the load in the boat, sea conditions, and running speed.
WARNING
@
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
3-19
E
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
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.
1
WARNING
@
Stop the engine before adjusting the
trim angle. Use care to avoid being pinched when
removing or installing the rod. Use caution when trying a trim posi-
tion 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.
@
3-20
EMU01414
Power Tilt Model
WARNING
@
Be sure all people are clear of the out-
board motor when adjusting the tilt angle, also be careful not to pinch any body parts between the drive unit and clamp bracket. Use caution when trying a trim posi-
tion 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. Use the power tilt switch located on
the bottom engine cowling (if equipped) only when the boat is at a complete stop with the engine off.
@
E
1) Place the gear-shift lever in the neutral
position.
3-21
E
2) Tilt the engine to the desired angle
using the power tilt switch.
NOTE:
@
Stay within the trim operating angle when trimming the outboard motor using the power tilt system.
@
To raise the bow (“trim-out”), tilt the engine up.
To lower the bow (“trim-in”), tilt the engine down.
Make test runs with the trim set to different angles to find the position that works best for your boat and operating conditions.
3-22
E
EMU01558
Bow Up
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. When trimmed out, the boat may have more tendency to steer to one side or the other. Compensate for this as you steer. The trim tab can also be adjusted to help off­set this effect.
Too much trim-out puts the bow of the boat too high in the water. Performance and economy are decreased because the hull of the boat is pushing the water and there is more air drag. Excessive trim-up can cause the propeller to ventilate, which reduces performance fur­ther. When trimmed-out too much, a boat may porpoise (hop in the water), which could throw the operator and passengers overboard.
EMU01559
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.
1
Bow up
2
Bow down
3
Optimum angle
3-23
E
EMU00285
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.
CAUTION:
@
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. Do not tilt up the engine by pushing
the steering handle as this could break the handle.
@
WARNING
@
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.
@
WARNING
@
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.)
@
3-24
E
EMU00290
PROCEDURE FOR TILTING UP
Manual tilt model
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.
EMU00300
PROCEDURE FOR TILTING DOWN
Manual tilt model
1) Place the tilt lock lever in the lock posi-
tion.
2) Slightly tilt up the engine until the tilt
support bar is released automatically.
3) Tilt down the engine.
3-25
E
EMU01573
PROCEDURE FOR TILTING UP
Power tilt models
1) Disconnect the fuel line or close the fuel
cock.
2) Push the power tilt switch “UP” until the
outboard has tilted up completely.
3-26
E
3) Push the tilt support knob into the clamp
bracket to support the engine.
WARNING
@
After tilting the engine, be sure to sup-
port it with the tilt support knob. Oth­erwise, the engine could fall back down suddenly if oil in the power tilt unit should lose pressure. Never operate the engine while it is
supported by the tilt support knob.
@
EMU01313
PROCEDURE FOR TILTING DOWN
Power tilt model
1) Push the power tilt switch “UP” until the
engine is supported by the tilt rod.
2) Pull out the tilt support knob.
3) Push the power tilt switch “DN” (Down)
to lower the engine to the desired posi­tion.
3-27
E
EMU01370
CRUISING IN SHALLOW
WATER
Manual tilt model
The outboard motor can be tilted up partially to allow operation in shallow water.
WARNING
@
Place the gear shift in the Neutral posi-
tion before using the shallow water cruising system. 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. Do not rotate the engine 180° and
operate the boat in reverse. Place the gear-shift in the Reverse position to operate the boat in reverse. 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. Return the engine to its normal posi-
tion as soon as the boat is back in deeper water.
@
CAUTION:
@
Place the gear-shift in the Neutral posi­tion before using the shallow water cruis­ing system.
@
3-28
E
EMU00310
PROCEDURE
1) Place the gear shift lever in the neutral
position.
2) Place the tilt lock lever in the release
position.
3) Slightly tilt up the engine. The tilt-sup-
port bar will lock automatically, support­ing the engine in a partially raised position.
NOTE:
@
This motor has 2 positions for shallow water cruising.
@
RETURNING TO ORIGINAL POSITION
1) Place the tilt lock lever in the lock posi-
tion.
2) Slightly tilt up the engine until the tilt-
support bar automatically returns to the free position.
3) Then, slowly lower the engine to the nor-
mal position.
3-29
E
EMU01319
CRUISING IN SHALLOW
WATER
Power tilt model
The engine can be tilted up partially to allow operation in shallow water.
WARNING
@
Place the gear shift in the Neutral posi-
tion before setting for shallow water cruising. Return the engine to its normal posi-
tion as soon as the boat is back in deeper water.
@
CAUTION:
@
Do not tilt up the outboard motor so that the cooling water inlet of the lower unit is above the surface of the water when set­ting for and cruising in shallow water. Otherwise severe damage from overheat­ing can result.
@
EMU01320
PROCEDURE
1) Place the gear shift lever in the neutral
position.
3-30
E
2) Slightly tilt up the engine using the
power tilt switch.
3-31
E
EMU00316
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 clogged-up with salt deposits.
NOTE:
@
Refer to cooling system flushing instructions in TRANSPORTING AND STORING OUT­BOARD MOTOR”.
@
CRUISING IN TURBID WATER
It is strongly recommended that the optional chromium-plated water-pump kit be installed if the outboard is to be used in turbid (muddy) water conditions.
3-32
-MEMO-
E
3-33
EMU00317
E
Chapter 4
MAINTENANCE
SPECIFICATIONS
TRANSPORTING AND STORING OUTBOARD MOTOR
Trailering outboard motor ........................4-4
Transporting outboard when
unmounted ............................................... 4-5
Storing outboard motor ............................4-5
PERIODIC MAINTENANCE
Replacement parts.................................4-10
Maintenance chart .................................4-11
Greasing.................................................4-12
Cleaning and adjusting spark plug ........4-13
Checking fuel system.............................4-15
Inspecting fuel filter ................................4-16
Adjusting idling speed............................4-17
Changing engine oil ...............................4-18
Checking timing belt...............................4-20
Replacing fuse .......................................4-20
Checking wiring and connectors ...........4-21
Exhaust leakage.....................................4-21
Water leakage........................................4-21
Checking power tilt system....................4-22
Checking propeller .................................4-23
Changing gear oil...................................4-25
Cleaning fuel tank ..................................4-27
Inspecting and replacing anode(s) ........4-28
Checking battery
(for electric start model) .........................4-29
Checking bolts and nuts ........................4-32
Cleaning cooling-water passages .........4-33
Motor exterior .........................................4-34
......................................4-1
.................................4-4
.....................4-10
4
EMU01870¯
E
SPECIFICATIONS
Item
Model
DIMENSIONS Overall length mm (in.) 927 (36.5) Overall width mm (in.) 350 (13.8) Overall height S/L/X mm (in.) 998 (39.3)/1,125 (44.3)/– Transom height S/L/X mm (in.) 435 (17.1)/562 (22.1)/– Weight S/L/X kg (lb.) 38 (84)/39.5 (87)/–
PERFORMANCE Full throttle operating range r/min 4,500–5,500 Maximum output kW (HP) @ r/min 4.4 (6) @ 5,000 Idling speed (in neutral) r/min 1,000–1,100
ENGINE Type 4-stroke, L2 Displacement cm Bore × stroke mm (in.) 56.0 × 40.0 (2.20 × 1.57) Ignition system CDI system Spark plug NGK BR6HS-10 Spark plug gap mm (in.) 0.9–1.0 (0.035–0.039) Control system Tiller control Starting system Manual start Valve clearance (cold engine) IN mm (in.) 0.15–0.20 (0.006–0.008)
EX mm (in.) 0.20–0.25 (0.008–0.010) Battery Min. cold cranking amps (CCA/SAE) amps at -18°C (-0.4°F) Min. marine cranking amps (MCA/ABYC) amps at 0°C (32°F) Min. reserve capacity (RC/SAE) minutes Alternator output V-A (W) 12 - (80) Starting carburation system Choke start DRIVE UNIT Gear positions Forward-Neutral-Reverse Gear ratio 2.08 (27/13) Trim and tilt system Manual tilt Propeller mark N FUEL AND OIL Recommended fuel Regular unleaded gasoline
Fuel tank capacity L (US gal, Imp gal) 12 (3.17, 2.64) Recommended engine oil 4-stroke motor oil
Engine oil capacity (excluding oil filter) L (US qt, Imp qt) 0.8 (0.85, 0.70)
(including oil filter) L (US qt, Imp qt) Recommended gear oil Hypoid gear oil (SAE 90) Gear oil capacity cm TIGHTENING TORQUE Spark plug N·m (kgf·m, lb·ft) 25 (2.5, 18) Propeller nut N·m (kgf·m, lb·ft) 17 (1.7, 12) Engine oil drain bolt N·m (kgf·m, lb·ft) 24 (2.4, 17) Engine oil filter N·m (kgf·m, lb·ft)
Unit F6MHB
3
(cu.in.) 197 (12.02)
P.O.N. Minimum 86
API SE, SF, SG, SH, SJ
SAE 10W-30,10W-40
3
(US oz, Imp oz) 150 (5.07, 5.29)
4-1
F8MHB T8PHB T8EHB
1,038 (40.9) 1,038 (40.9) 1,038 (40.9) 371 (14.6) 371 (14.6) 371 (14.6) 998 (39.3)/1,125 (44.3)/––/1,187 (46.7)/1,255 (49.4) –/1,187 (46.7)/1,255 (49.4) 435 (17.1)/562 (22.1)/––/557 (21.9)/625 (24.6) –/557 (21.9)/625 (24.6) 38 (84)/39.5 (87)/––/52 (115)/53 (117) –/46.5 (103)/47.5 (105)
5,000–6,000 5,000–6,000 5,000–6,000
5.9 (8) @ 5,500 5.9 (8) @ 5,500 5.9 (8) @ 5,500 1,000–1,100 1,000–1,100 1,000–1,100
4-stroke, L2 4-stroke, L2 4-stroke, L2 197 (12.02) 197 (12.02) 197 (12.02)
56.0 × 40.0 (2.20 × 1.57) 56.0 × 40.0 (2.20 × 1.57) 56.0 × 40.0 (2.20 × 1.57) CDI system CDI system CDI system BR6HS-10 BR6HS-10 BR6HS-10
0.9–1.0 (0.035–0.039) 0.9–1.0 (0.035–0.039) 0.9–1.0 (0.035–0.039) Tiller control Tiller control Tiller control Manual start Electric start Manual and electric start
0.15–0.20 (0.006–0.008) 0.15–0.20 (0.006–0.008) 0.15–0.20 (0.006–0.008)
0.20–0.25 (0.008–0.010) 0.20–0.25 (0.008–0.010) 0.20–0.25 (0.008–0.010)
E
245 245 323 323 52 52
12 - (80) 12 - 6 12 - 6 Choke start Choke start Choke start
Forward-Neutral-Reverse Forward-Neutral-Reverse Forward-Neutral-Reverse
2.08 (27/13) 2.92 (38/13) 2.92 (38/13) Manual tilt Power tilt Manual tilt NR R
Regular unleaded gasoline Regular unleaded gasoline Regular unleaded gasoline Minmum 86 Minmum 86 Minmum 86 12 (3.17, 2.64) 12 (3.17, 2.64) 12 (3.17, 2.64) 4 stroke motor oil 4 stroke motor oil 4 stroke motor oil SE, SF, SG, SH, SJ SE, SF, SG, SH, SJ SE, SF, SG, SH, SJ 10W-30, 10W-40 10W-30, 10W-40 10W-30, 10W-40
0.8 (0.85, 0.70) 0.8 (0.85, 0.70) 0.8 (0.85, 0.70)
—— —
Hypoid gear oil (SAE 90) Hypoid gear oil (SAE 90) Hypoid gear oil (SAE 90) 150 (5.07, 5.29) 370 (12.51, 13.05) 370 (12.51, 13.05)
25 (2.5, 18) 24 (2.4, 17) 24 (2.4, 17) 17 (1.7, 12) 21 (2.1, 15) 21 (2.1, 15) 24 (2.4, 17) 24 (2.4, 17) 24 (2.4, 17)
—— —
4-2
E
Item
Model
DIMENSIONS Overall length mm (in.) 552 (21.7) Overall width mm (in.) 312 (12.3) Overall height S/L/X mm (in.) –/1,187 (46.7)/1,255 (49.4) Transom height S/L/X mm (in.) –/557 (21.9)/625 (24.6) Weight S/L/X kg (lb.) –/49 (108)/50 (110)
PERFORMANCE Full throttle operating range r/min 5,000–6,000 Maximum output kW (HP) @ r/min 5.9 (8) @ 5,500 Idling speed (in neutral) r/min 1,000–1,100
ENGINE Type 4-stroke, L2 Displacement cm Bore × stroke mm (in.) 56.0 × 40.0 (2.20 × 1.57) Ignition system CDI system Spark plug NGK BR6HS-10 Spark plug gap mm (in.) 0.9–1.0 (0.035–0.039) Control system Remote control Starting system Electric start Valve clearance (cold engine) IN mm (in.) 0.15–0.20 (0.006–0.008)
EX mm (in.) 0.20–0.25 (0.008–0.010) Battery Min. cold cranking amps (CCA/SAE) amps at -18°C (-0.4°F) 245 Min. marine cranking amps (MCA/ABYC) amps at 0°C (32°F) 323 Min. reserve capacity (RC/SAE) minutes 52 Alternator output V-A (W) 12 - 6 Starting carburation system Choke start DRIVE UNIT Gear positions Forward-Neutral-Reverse Gear ratio 2.92 (38/13) Trim and tilt system Power tilt Propeller mark R FUEL AND OIL Recommended fuel Regular unleaded gasoline
Fuel tank capacity L (US gal, Imp gal) 12 (3.17, 2.64) Recommended engine oil 4 stroke motor oil
Engine oil capacity (excluding oil filter) L (US qt, Imp qt) 0.8 (0.85, 0.70)
(including oil filter) L (US qt, Imp qt) Recommended gear oil Hypoid gear oil (SAE 90) Gear oil capacity cm TIGHTENING TORQUE Spark plug N·m (kgf·m, lb·ft) 24 (2.4, 17) Propeller nut N·m (kgf·m, lb·ft) 21 (2.1, 15) Engine oil drain bolt N·m (kgf·m, lb·ft) 24 (2.4, 17) Engine oil filter N·m (kgf·m, lb·ft)
Unit T8PRB
3
(cu.in.) 197 (12.02)
P.O.N. Minmum 86
API SE, SF, SG, SH, SJ
SAE 10W-30, 10W-40
3
(US oz, Imp oz) 370 (12.51, 13.05)
4-3
E
EMU01369
TRANSPORTING AND
STORING OUTBOARD MOTOR
WARNING
@
Leaking fuel is a fire hazard. When trans­porting and storing the outboard motor, close the air vent screw and fuel cock to prevent fuel from leaking.
@
EMU00326
TRAILERING OUTBOARD MOTOR
The motor should be trailered and stored in the normal running position. If there is insuf­ficient road clearance in this position, then trailer the motor in the tilt position using a motor support device such as a transom saver bar. For further details, consult your Yamaha dealer.
WARNING
@
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. 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.
@
CAUTION:
@
Do not use the tilt support lever/knob when trailering the boat. The outboard motor could shake loose from the tilt support and fall. If the motor can not be trailered in the down position, use an additional support device to secure it in the up position.
@
4-4
E
EMU01362
TRANSPORTING OUTBOARD WHEN UNMOUNTED
Transport in an upright position to prevent engine oil from entering the cylinder head and causing damage to the motor.
EMU00883
STORING OUTBOARD MOTOR
When storing your Yamaha outboard for pro­longed periods of time, (2 months or longer), several important procedures must be per­formed to prevent expensive damage. It is advisable to have your outboard serviced by an authorized Yamaha dealer prior to stor­age. However, the following procedures can be performed by you, the owner, with a mini­mum of tools.
1
2
CAUTION:
@
Keep the engine in one of the posi-
tions shown when storing it. Other­wise, oil could enter the cylinder from the sump, which could cause mechani­cal damage or leakage. Drain cooling water completely before
placing the engine on its side. Other­wise, water may enter the engine through the exhaust manifold and cause corrosion or other mechanical damage. Store the engine in a dry, well-venti-
lated place, not in direct sunlight.
Vertical position
1
Horizontal position (On the tiller handle)
2
4-5
E
EMU00335
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.
@
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.
WARNING
@
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.
@
4-6
E
EMU00340
Flushing in a Water Tank
CAUTION:
@
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.
@
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) Run the engine at a fast idle for 10~15 minutes.
5) Just prior to turning off the engine, quickly spray Yamaha Stor-Rite Engine Fogging Oil (Part No. LUB-STRRT-12-00) into the silencer cover. When properly done, the engine will smoke excessively and almost stall.
6) Remove the motor from the water tank.
7) Install the top cowling.
1
Water surface
2
Lowest water level
4-7
E
EMU00349
Lubrication
1) Remove the spark plug(s). Spray a Yamaha Stor-Rite Engine Fogging Oil into each cylinder for 10 seconds. Grease the spark plug threads and rein­stall the spark plug(s) and torque to proper specification. (Refer to the CLEANING AND ADJUSTING SPARK PLUG).
2) Turn the engine over with the stop lan­yard disconnected to work the fogging oil into the piston rings.
3) Change the gear-case oil. (Refer to CHANGING GEAR OIL). Inspect the oil for the presence of water which indi­cates a leaky seal. Seal replacement should be performed by an authorized Yamaha dealership prior to use.
4) Grease all grease fittings. (Refer to the GREASING)
EMU00351
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).
4-8
E
EMU01545
Battery Care
WARNING
@
Battery electrolyte is poisonous and dan­gerous, causing severe burns, etc. It con­tains sulfuric acid. Avoid contact with skin, eyes, or clothing. Antidote: EXTERNAL: Flush with water. INTERNAL: Drink large quantities of water or milk. Follow with milk of magne­sia, beaten egg, or vegetable oil. Call physician immediately. EYES: Flush with water for 15 minutes and get prompt medical attention. Batteries produce explosive gases: Keep sparks, flame, cigarettes, etc. away. Ven­tilate when charging or using in a closed space. Always wear eye protection when working near batteries. KEEP OUT OF REACH OF CHILDREN.
@
Batteries vary among manufacturers. There­fore the following procedures may not always apply. Consult your battery manufac­turer’s instructions.
1) Disconnect and remove the battery from the boat. Always disconnect the black negative lead first to prevent the risk of shorting.
2) Clean the battery casing and terminals. Fill each cell to the upper level with dis­tilled water.
3) Store the battery on a level surface in a cool, dry, well-ventilated place out of direct sunlight.
4) Once a month, check the specific gravity of the electrolyte and recharge as required to prolong battery life.
4-9
E
EMU00354
PERIODIC MAINTENANCE
WARNING
@
Be sure to turn off the engine when you perform maintenance unless otherwise specified. If you or the owner is not famil­iar with machine servicing, this work should be done by a Yamaha dealer or other qualified mechanic.
@
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.
EMU00356
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.
4-10
E
EMU00363¯
MAINTENANCE CHART
Frequency of maintenance operations may be adjusted according to the operating condi­tions, but the following table gives general guidelines.
The mark (●) indicates the check-ups which you may carry out yourself. The mark (❍) indicates work to be carried out by your Yamaha dealer.
Interval
Item
Spark plug
Greasing points Greasing Gear oil Change Fuel system Inspection Fuel filter Inspection/Replacement Fuel tank Cleaning Idling speed Adjustment Anode Inspection/Replacement Outboard motor exterior Inspection Cooling water passages (*2) Cleaning Propeller Inspection Timing belt Inspection/Replacement
Battery(*1) Inspection/Charge
Carburetor setting Inspection/Adjustment Bolts/Nuts Retightening Engine oil Change Valve clearance Inspection/Adjustment Thermostat Inspection
Cleaning/Adjustment/ Replacement
Initial Every
10 hours
(1 month)
●●●
●●
●●●
(every
1 month)
❍❍
❍❍
●●
❍❍
50 hours
(3 months)
❍❍
●●
●●
●●
100 hours
(6 months)
200 hours
(1 year)
Refer
page
4-13
4-12 4-25 4-15 4-16 4-27 4-17 4-28 4-34 4-33 4-23 4-20
4-29
4-32 4-18
— —
*1. For Electric starter model. *2. When operating in salt water, turbid or muddy water, the engine should be flushed with clean water
after each use.
NOTE:
@
If leaded gasoline is usually used, engine valves and related parts should be inspected after every 300 hours of operation in addition to the items on the maintenance chart above.
@
4-11
EMU00366
GREASING
Yamaha marine grease (Water resistant grease)
E
4-12
E
EMU01202
CLEANING AND ADJUSTING SPARK PLUG
WARNING
@
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.
4-13
E
When fitting the plug, always clean the gas­ket surface and use a new gasket. Wipe off any dirt from the threads and screw in the spark plug to the correct torque.
Spark plug torque: Refer to “SPECIFICATIONS”, page 4-1.
NOTE:
@
If a torque-wrench is not available when you are fitting a spark plug, a good estimate of the correct torque is 1/4 to 1/2 a turn past finger-tight. Have the spark plug adjusted to the correct torque as soon as possible with a torque-wrench.
@
Initial of spark plug I.D. mark
Plug wrench size
B 21 mm (13/16 in.)
C/BK 16 mm (5/8 in.)
D 18.3 mm (23/32 in.)
1
Spark plug gap
2
Spark plug I.D. mark (NGK)
4-14
E
EMU01509
CHECKING FUEL SYSTEM
WARNING
@
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.
Checkpoints
Fuel system parts leakage.
Fuel hose joint leakage.
Fuel hose cracks or other damage.
Fuel connector leakage.
WARNING
@
Leaking fuel can result in fire or explo­sion.
Check for fuel leakage regularly.
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.
@
4-15
E
EMU00370
INSPECTING FUEL FILTER
WARNING
@
Gasoline (petrol) is highly flammable, and its vapors are flammable and explo­sive.
If you have any question about prop-
erly doing this procedure, consult your Yamaha dealer. Do not perform this procedure on a hot
or running engine. Allow the engine to cool. There will be fuel in the fuel filter. Keep
away from sparks, cigarettes, flames or other sources of ignition. This procedure will allow some fuel to
spill. Catch fuel in a rag. Wipe up any spilled fuel immediately. 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.
@
EMU00374¯
Check the fuel filter periodically. The fuel filter is a one-piece, disposable type. If foreign matter is found in the filter, replace it. For replacement of the fuel filter, consult a Yamaha dealer.
4-16
E
EMU00991
ADJUSTING IDLING SPEED
WARNING
@
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.
@
CAUTION:
@
This procedure must be performed while the outboard motor is in the water. A flushing attachment or test tank can be used.
@
A diagnostic tachometer should be used for this procedure.
1) Start the engine and allow it to warm up fully in Neutral until it is running smoothly. If the outboard is mounted on a boat, be sure the boat is tightly moored.
2) Adjust the throttle stop-screw 1 to set the idling speed to specification (see SPECIFICATIONS on page 4-1) by turning the stop-screw clockwise to increase the idling speed, and turning it counterclockwise to decrease the idling speed.
NOTE:
@
Correct idling-speed adjustment is only pos­sible if the engine is fully warmed-up. If not warmed up fully, the speed setting will tend to be too high. If you have difficulty obtaining the specified idle, consult a Yamaha dealer or other qualified mechanic.
@
4-17
E
EMU01415¯
CHANGING ENGINE OIL
WARNING
@
Avoid draining the engine oil immedi-
ately after stopping the engine. The oil is hot and should be handled with care to avoid burns. Be sure the outboard is securely fas-
tened to the transom or a stable stand.
@
CAUTION:
@
Change the engine oil after the first 10
hours of operation, and every 100 hours or at 6-month intervals thereaf­ter. Otherwise, the engine will wear quickly. Do not overfill the oil, and be sure the
engine is in an upright position (not tilted) when checking and changing the engine oil. If the oil level is above the upper level
mark, drain until the level meets the specified capacity. Overfilling the oil may cause leakage or damage.
@
1) Put the outboard motor in an upright position.
2) Prepare a suitable container which can hold a larger amount than the engine oil capacity. Loosen and remove the drain bolt 1 while holding the container under the drain hole. Let the oil drain com­pletely. Wipe up any spilled oil immedi­ately.
3) Put a new gasket on the drain bolt. Apply a light coat of oil to the gasket and reinstall the drain bolt.
Tightening torque: Refer to “SPECIFICATIONS”, page 4-1.
4-18
E
NOTE:
@
If a torque wrench is not available when you are installing the drain plug, finger tighten the bolt just until the gasket comes into con­tact with the surface of the drain hole. Then tighten 1/4 - 1/2 turn. Have the drain plug torqued to the correct value with a torque wrench as soon as possible.
@
4) Remove the oil filler cap 2. Add the cor­rect amount of oil through the filler hole. Reinstall the filler cap.
Engine oil grade/capacity: Refer to “SPECIFICATIONS”, page 4-1.
5) Start the engine and watch to make sure the low oil pressure warning lamp turns off. Make sure that there are no oil leaks.
CAUTION:
@
If the oil lamp does not turn off, or if there are oil leaks, stop the engine and find the cause. Continued operation with a prob­lem could cause severe engine damage. If the problem cannot be found and cor­rected, consult your Yamaha dealer.
@
6) Turn off the engine and wait 3 minutes. Recheck the oil level using the dipstick to be sure the level falls between the upper and lower marks. Fill with oil if it is below the lower mark, or drain to the specified level if it is above the upper mark.
7) Dispose of used oil according to local regulations.
NOTE:
@
For disposal of used oil consult your Yamaha dealer.
The oil should be changed more often when the engine is operated under adverse conditions such as extended trolling.
@
4-19
E
EMU00380
CHECKING TIMING BELT
Inspect the timing-belt and replace it if any to the following signs is observed:
Cracks in the back of the belt or in the base of belt teeth.
Excessive wear at the roots of cogs.
Rubber portion swollen by oil.
Belt surfaces roughened.
Signs of wear on edges or outer surface of belt.
Stretching by 10 mm (0.39 in) or more when the belt is pushed with a finger.
CAUTION:
@
Consult your Yamaha dealer for replacing the timing-belt.
@
EMU01315
REPLACING FUSE
If the fuse has blown on an Electric start model, open the fuse box and replace the fuse with a spare one of proper amperage, using a fuse puller.
WARNING
@
Be sure to use the specified fuse. An incor­rect fuse or a piece of wire may allow excessive current flow. This could cause electrical system damage and a fire hazard.
@
NOTE:
@
If the new fuse blows again immediately, consult a Yamaha dealer.
@
1
Fuse box
2
Fuse (10 A)
3
Spare fuse (10 A)
4
Fuse puller
4-20
E
EMU00383
CHECKING WIRING AND CONNECTORS
1) Check that each grounding wire is prop­erly secured.
2) Check that each connector is engaged securely.
EMU00384
EXHAUST LEAKAGE
Start the engine and check that no exhaust leaks from the joints between the exhaust cover, cylinder head and crank case.
EMU00385
WATER LEAKAGE
Start the engine and check that no water leaks from the joints between the exhaust cover, cylinder head and crank case.
4-21
E
EMU01322
CHECKING POWER TILT SYSTEM
WARNING
@
Never get under the lower unit while it
is tilted, even when the tilt-support knob is locked. Severe injury could occur if the outboard accidentally falls. Make sure no one is under the out-
board before performing this test.
@
1) Check the power tilt unit for any sign of oil leaks.
2) Operate each of the power tilt switches on remote control and engine bottom cowling (if equipped) to check that all switches work.
3) Tilt up the motor and check that the tilt rod 1 is pushed out completely.
4) Check that the tilt rod is free of corrosion or other flaws.
5) Operate the motor to tilt down. Check that the tilt rod operates smoothly.
NOTE:
@
If any operation is abnormal, consult a Yamaha dealer.
@
Recommended fluid; Yamaha power trim & tilt fluid or ATF (DEXRON-II)
4-22
E
EMU00388
CHECKING PROPELLER
WARNING
@
You could be seriously injured if the engine accidentally starts while you are near the propeller.
Before inspecting, removing or install-
ing 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. 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.
@
EMU00390
Propeller Checking Point
Check each of the propeller blades for wear, erosion from cavitation or ventila­tion, or other damage.
Check the splines for wear and damage.
Check for fish line winding around the propeller shaft.
Check the propeller shaft oil seal for dam­age.
4-23
Loading...