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Yamaha F115 Owners Manual

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    Basic components 
    35
    NOTE:
     
    After the main switch is first turned on, all the
    displays come on as a test. After a few sec-
    onds, the gauge will change to normal oper- 
    ation.
    NOTE:
     
    The speedometer unit shows various kinds
    of information according to the setting made
    using the “” (set) and “” (mode) but-
    tons. In addition, the speedometer can show
    the desired unit of measurement such as km/
    h, mph, or knots. For details, see the at- 
    tached operation manual. 
    EMU31630 
    Fuel management meter 
    This meter has functions of fuel flow meter,
    total consumption display, fuel economy dis-
    play, and remaining fuel display.
    NOTE:
     
    After the main switch is first turned on, all the
    displays come on as a test. After a few sec-
    onds, the gauge will change to normal oper- 
    ation.
    NOTE:
     
    The fuel management meter shows various
    kinds of information when the operator uses
    the “” (set) and “” (mode) buttons.
    For details, see the attached operation man- 
    1. Set button
    2. Mode button
    1. Speedometer
    2. Fuel meter
    3. Multifunction display
    2
    1
    ZMU05436
    1
    2
    3
    ZMU05437
     
    1. Set button
    2. Mode button
    1. Fuel flow meter
    2. Multifunction display
    2
    1
    ZMU05438
    1
    2
    ZMU05439 
    						
    							 
    Basic components 
    36 
    ual. 
    EMU26801 
    Warning system
    CAUTION:
     
    ECM00090  
    Do not continue to operate the engine if a
    warning device has activated. Consult
    your Yamaha dealer if the problem can- 
    not be located and corrected. 
    EMU30341 
    Overheat warning (twin engines) 
    This engine has an overheat warning device.
    If the engine temperature rises too high, the
    warning device will activate.
    Activation of warning device 
     
    Engine speed will automatically decrease
    to 2000–3500 r/min. 
     
    If equipped with an overheat warning indi-
    cator, it will light or blink. 
     
    The buzzer will sound.If the warning system has activated, stop the
    engine and check the cooling water inlet for
    clogging.
    NOTE:
     
    Dual engine drive users:
    Should the overheat warning system of one
    engine activate, the engine will slow down
    and the buzzer will sound. This will cause the
    other engine to slow down and the buzzer to
    sound. To switch off the warning activation
    ZMU04746
    ZMU04227
    ZMU03025
    OFF STARTONOFF STARTON
    ZMU04584
    ZMU02630 
    						
    							 
    Basic components 
    37 
    on the engine not affected by overheating,
    turn off the main switch of the engine over- 
    heating. 
    EMU30352 
    Low oil pressure warning 
    If the oil pressure drops too low, the warning
    device will activate.
    Activation of warning device 
     
    Engine speed will automatically decrease
    to 2000–3500 r/min. 
     
    The low oil pressure warning indicator will
    light or blink. 
     
    The buzzer will sound.If the warning system has activated, stop the
    engine as soon as it is safe to do so. Check
    the oil level and add oil as needed. If the oil
    level is correct, consult your Yamaha dealer.
    CAUTION:
     
    ECM00100  
    Do not continue to run the engine if the
    low oil pressure warning indicator is on. 
    Serious engine damage could occur.
    ZMU04587
    ZMU04254
    ZMU02360
    OFF STARTONOFF STARTON
    ZMU04584 
    						
    							 
    38 
    Operation 
    EMU26901 
    Installation
    CAUTION:
     
    ECM00110  
    Incorrect engine height or obstructions
    to smooth water flow (such as the design
    or condition of the boat, or accessories
    such as transom ladders or 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 ex-
    haust housing is low enough to prevent wa-
    ter entry into the powerhead, when water
    rises due to waves when the outboard is not 
    running. 
    EMU26910 
    Mounting the outboard motor
    WARNING
     
    EWM00820  
     
    Overpowering a boat could cause se-
    vere instability. Do not install an out-
    board motor with more horsepower
    than the maximum rating on the capac-
    ity 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 in-
    structions for every possible boat and
    motor combination. Proper mounting
    depends in part on experience and the 
    specific boat and motor combination.
    WARNING
     
    EWM00830  
    Improper mounting of the outboard mo-
    tor 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 experi-
    enced person. 
     
    For portable models, your dealer or oth-
    er person experienced in proper out-
    board 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. 
    1. Center line (keel line)
    ZMU017601 
    						
    							 
    Operation 
    39 
    EMU26930 
    Mounting height (boat bottom) 
    To run your boat at optimum efficiency, the
    water resistance (drag) of the boat and out-
    board motor must be made as little as possi-
    ble. 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 en-
    gine to overheat. If the mounting height is too
    low, the water resistance will increase and
    thereby reduce engine efficiency. Mount the
    outboard motor so that the anti-cavitation
    plate is in alignment with the bottom of the
    boat.
    NOTE:
     
     
    The optimum mounting height of the out-board motor is affected by the boat/motor
    combination and the desired use. Test
    runs at different heights can help deter-
    mine the optimum mounting height. Con-
    sult your Yamaha dealer or boat
    manufacturer for further information on de-
    termining the proper mounting height. 
     
    For instructions on setting the trim angle of 
    the outboard motor, see page 48. 
    EMU30173 
    Breaking in engine 
    Your new engine requires a period of break-
    in to allow mating surfaces of moving parts to
    wear in evenly. Correct break-in will help en-
    sure proper performance and longer engine
    life.
    CAUTION:
     
    ECM00800  
    Failure to follow the break-in procedure
    could result in reduced engine life or 
    even severe engine damage. 
    EMU27081 
    Procedure for 4-stroke models 
    Run the engine under load (in gear with a
    propeller installed) for 10 hours as follows.
    1. First hour:
    Run the engine at 2000 r/min or at ap-
    proximately half throttle.
    2. Second hour:
    Run the engine at 3000 r/min or at ap-
    proximately three-quarter throttle.
    3. Remaining eight hours:
    Run the engine at any speed. However,
    avoid operating at full throttle for more
    than 5 minutes at a time.
    4. After the first 10 hours:
    Operate the engine normally. 
    1. Center line (keel line)
    ZMU01874 
    						
    							 
    Operation 
    40 
    EMU27103 
    Preoperation checks
    WARNING
     
    EWM00080  
    If any item in the preoperation check is
    not working properly, have it inspected
    and repaired before operating the out-
    board motor. Otherwise an accident 
    could occur.
    CAUTION:
     
    ECM00120  
    Do not start the engine out of water. Over-
    heating and serious engine damage can 
    occur. 
    EMU31550 
    Fuel 
     
    Check to be sure you have plenty of fuel
    for your trip. 
     
    Make sure there are no fuel leaks or gaso-
    line fumes. 
     
    Check fuel line connections to be sure they
    are tight (if equipped Yamaha fuel tank or
    boat tank). 
     
    Be sure the fuel tank is positioned on a se-
    cure, flat surface, and that the fuel line is
    not twisted or flattened, or likely to contact
    sharp objects (if equipped Yamaha fuel
    tank or boat tank). 
     
    Check the water in the fuel filter with the
    water separator warning device. Place the
    gear shift lever in neutral and turn the main
    switch to “”(on). If the buzzer sounds
    and the water separator warning indicator
    blinks, consult your Yamaha dealer imme-
    diately. 
    EMU27130 
    Controls 
     
    Check throttle, shift, and steering for prop-
    er operation before starting the engine. 
     
    The controls should work smoothly, with-
    out 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. 
    EMU27150 
    Engine 
     
    Check the engine and engine mounting. 
     
    Look for loose or damaged fasteners. 
     
    Check the propeller for damage. 
     
    Check that the battery is in good condition
    and the battery connections are secure. 
    EMU27163 
    Checking the engine oil level 
    1. Put the outboard motor in an upright po-
    sition (not tilted).
    2. Remove oil dipstick and wipe it clean.
    3. Completely insert the dipstick and re-
    move 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
    ZMU04257
    1 
    						
    							 
    Operation 
    41
    NOTE:
     
    Be sure to completely insert the dipstick into 
    the dipstick guide. 
    EMU30021 
    Filling fuel
    WARNING
     
    EWM00060  
    Gasoline and its vapors are highly flam-
    mable and explosive. Keep away from
    sparks, cigarettes, flames, or other 
    sources of ignition. 
    1. Remove the fuel tank cap.
    2. Carefully fill the fuel tank.
    3. Securely close the cap after filling the
    tank. Wipe up any spilled fuel. 
    EMU27270 
    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 con-
    cerns about pollution and resulting emis-
    sions regulations. One of the most obvious
    changes has been the elimination of lead
    from most fuels.
    As gasoline has changed, the amount of ad-ditives such as aromatics and oxygenates
    has increased. These additives are impor-
    tant 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 de-
    posits collect, piston rings begin sticking.
    Performance drops and engine wear in-
    creases dramatically.
    While many additives available may reduce
    deposits, Yamaha recommends the use of 
    Ring Free Fuel Additive 
    , available from
    your Yamaha dealer.  
    Ring Free Fuel Addi-
    tive 
     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 la-
    beling for use instructions. 
    EMU27450 
    Operating engine 
    EMU27482 
    Feeding fuel
    WARNING
     
    EWM00420  
     
    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 vapor will be released. Gaso-
    line is highly flammable, and its vapors
    are flammable and explosive. Refrain
    from smoking, and keep away from
    open flames and sparks while loosen-
    ing the air vent screw. 
     
    This product emits exhaust gases
    which contain carbon monoxide, a col-
    orless, odorless gas which could cause
    brain damage or death when inhaled.
    Symptoms include nausea, dizziness, 
    1. Lower level mark
    2. Oil dipstick
    3. Upper level mark
    ZMU02082
    1
    3
    2 
    						
    							 
    Operation 
    42 
    and drowsiness. Keep cockpit and cab-
    in 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 or a fuel cock on the
    boat, firmly connect the fuel line to the
    joint or open the fuel cock.
    3. Squeeze the primer pump, with the ar-
    row pointing up, until you feel it become
    firm. 
    EMU27490 
    Starting engine 
    EMU27592 
    Electric start / prime start models 
    1. Place the gear shift lever in neutral.
    NOTE:
     
    The start-in-gear protection device prevents
    the engine from starting except when in neu- 
    tral.
    2. 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 into the en-
    gine stop switch.
    WARNING
     
    EWM00120  
     
    Attach the engine stop switch lanyard
    to a secure place on your clothing, or
    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 entan-
    gled, preventing it from functioning. 
     
    Avoid accidentally pulling the lanyard
    during normal operation. Loss of en-
    gine 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. 
    3. Place the throttle grip in the “”
    (start) position. After the engine starts,
    return the throttle to the fully closed po-
    sition. 
    1. Arrow 
    						
    							 
    Operation 
    43 
    4. Turn the main switch to “” (start),
    and hold it for a maximum of 5 seconds.
    5. Immediately after the engine starts, re-
    lease the main switch and allow it to re-
    turn to “” (on).
    CAUTION:
     
    ECM00191  
     
    Never turn the main switch to “”
    (start) while the engine is running. 
     
    Do not keep the starter motor turning
    for more than 5 seconds. If the starter
    motor is turned continuously for more
    than 5 seconds, the battery will be
    quickly discharged, thus making it im-
    possible to start the engine. The starter
    can also be damaged. If the engine will
    not start after 5 seconds of cranking,
    return the main switch to “” (on), wait
    10 seconds, then crank the engine 
    again.
    NOTE:
     
     
    When the engine is cold, it needs to be
    warmed up. For further information, see
    page 45. 
     
    If the engine is warm and fails to start,
    open the throttle slightly and try to start the
    engine again. If the engine still fails to 
    start, see page 75. 
    EMU27624 
    Electric start and remote control models 
    1. Place the remote control lever in “”
    (neutral).
    NOTE:
     
    The start-in-gear protection device prevents
    the engine from starting except when in neu- 
    tral.
    2. 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 into the en-
    N
    ZMU04588 
    						
    							 
    Operation 
    44 
    gine stop switch.
    WARNING
     
    EWM00120  
     
    Attach the engine stop switch lanyard
    to a secure place on your clothing, or
    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 entan-
    gled, preventing it from functioning. 
     
    Avoid accidentally pulling the lanyard
    during normal operation. Loss of en-
    gine 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. 
    3. Turn the main switch to “” (on).
    NOTE:
     
    Dual engine users: When the main switch isturned on, the buzzer operates for a few sec-
    onds then stops automatically. The buzzer 
    also operates if one of the engines stalls.
    4. Turn the main switch to “” (start),
    and hold it for a maximum of 5 seconds.
    5. Immediately after the engine starts, re-
    lease the main switch to return it to “”
    (on).
    CAUTION:
     
    ECM00191  
     
    Never turn the main switch to “”
    (start) while the engine is running. 
     
    Do not keep the starter motor turning
    for more than 5 seconds. If the starter
    motor is turned continuously for more
    than 5 seconds, the battery will be
    quickly discharged, thus making it im-
    possible to start the engine. The starter
    can also be damaged. If the engine will
    not start after 5 seconds of cranking,
    ON
    STARTOFFON
    STARTOFF
    ZMU04589
    STARTON
    ZMU04590 
    						
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