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Yamaha F 15 Owners Manual

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    Operation 
    45 
    EMU28071 
    Cruising in shallow water (manual tilt 
    models)
    WARNING
     
    EWM00710  
     
    Place the gear shift in neutral before us-
    ing the shallow water cruising system. 
     
    Run the boat at the lowest possible
    speed when using the shallow water
    cruising system. The tilt lock mecha-
    nism does not work while the shallow
    water cruising system is being used.
    Hitting an underwater obstacle could
    cause the outboard motor to lift out of
    the water, resulting in loss of control. 
     
    Do not rotate the outboard motor 180°
    and operate the boat in reverse. Place
    the gear shift in reverse to operate the
    boat in reverse. 
     
    Use extra care when operating in re-
    verse. Too much reverse thrust can
    cause the outboard motor to lift out of
    the water, increasing the chance of ac-
    cident and personal injury. 
     
    Return the outboard motor to its normal
    position as soon as the boat is back in 
    deeper water.
    CAUTION:
     
    ECM00260  
    Do not tilt the outboard motor up so that
    the cooling water inlet on the lower unit is
    above the surface of the water when set-
    ting up for and cruising in shallow water.
    Otherwise severe damage from overheat- 
    ing can result. 
    EMU28123 
    Procedure 
    1. Place the gear shift lever in neutral.
    ZMU02047
    ZMU01988
    N 
    						
    							 
    Operation 
    46 
    2. Place the tilt lock lever in the release/up
    position.
    3. Slightly tilt the outboard motor up. The
    tilt support bar will lock automatically,
    supporting the outboard motor in a par-
    tially raised position.
    NOTE:
     
    This outboard motor has 2 positions for shal- 
    low water cruising.
    4. To return the outboard motor to the nor-
    mal running position, place the gear shift
    lever in neutral, then place the tilt lock le-
    ver in the lock/down position.5. Slightly tilt the outboard motor up until
    the tilt support bar automatically returns
    to the free position.
    6. Slowly lower the outboard motor to the
    normal position. 
    EMU28090 
    Power trim and tilt models / power tilt 
    models 
    The outboard motor can be tilted up partially
    to allow operation in shallow water.
    WARNING
     
    EWM00660  
     
    Place the gear shift in neutral before
    setting up for shallow water cruising. 
     
    Return the outboard motor to its normal
    position as soon as the boat is back in 
    deeper water.
    CAUTION:
     
    ECM00260  
    Do not tilt the outboard motor up so that
    the cooling water inlet on the lower unit is
    above the surface of the water when set-
    ting up for and cruising in shallow water.
    Otherwise severe damage from overheat- 
    ing can result. 
    EMU28184 
    Procedure for power trim and tilt / power
    tilt models 
    1. Place the gear shift lever in neutral.
    N
    ZMU04881
    ZMU02044
    ZMU02048 
    						
    							 
    Operation 
    47 
    2. Slightly tilt the outboard motor up to the
    desired position using the power trim / tilt
    switch.3. To return the outboard motor to the nor-
    mal running position, press the power
    trim / tilt switch and slowly tilt the out-
    board motor down. 
    EMU28191 
    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 with
    salt deposits.
    NOTE:
     
    For cooling system flushing instructions, see 
    page 51. 
    Cruising in turbid water 
    Yamaha strongly recommends that you use
    the optional chromium-plated water pump kit
    (not available for some models) if you use
    the outboard motor in turbid (muddy) water
    conditions.
    N
    ZMU03525
    ZMU01988
    N
    UP
    ZMU01935
    UPDN
    ZMU02823
    UP
    UPZMU04900 
    						
    							 
    48 
    Maintenance 
    EMU28217 
    Specifications 
    Dimension: 
    Overall length: 
    F15EH 1001 mm (39.4 in)
    F15MH 1001 mm (39.4 in)
    F15PH 1001 mm (39.4 in)
    F15PR 643 mm (25.3 in)
    F9.9ER2 643 mm (25.3 in)
    F9.9MH2 1001 mm (39.4 in)
    FT9.9DWH 1105 mm (43.5 in)
    T9.9EH2 1001 mm (39.4 in)
    T9.9ER2 643 mm (25.3 in)
    Overall width: 
    F15EH 427 mm (16.8 in)
    F15MH 427 mm (16.8 in)
    F15PH 427 mm (16.8 in)
    F15PR 369 mm (14.5 in)
    F9.9ER2 369 mm (14.5 in)
    F9.9MH2 427 mm (16.8 in)
    FT9.9DWH 501 mm (19.7 in)
    T9.9EH2 427 mm (16.8 in)
    T9.9ER2 369 mm (14.5 in)
    Overall height S: 
    F15EH 1080 mm (42.5 in)
    F15MH 1080 mm (42.5 in)
    F9.9MH2 1080 mm (42.5 in)
    Overall height L: 
    F15EH 1207 mm (47.5 in)
    F15MH 1207 mm (47.5 in)
    F15PH 1207 mm (47.5 in)
    F15PR 1207 mm (47.5 in)
    F9.9ER2 1207 mm (47.5 in)
    F9.9MH2 1207 mm (47.5 in)
    T9.9EH2 1253 mm (49.3 in)
    T9.9ER2 1253 mm (49.3 in)
    Overall height X: 
    FT9.9DWH 1321 mm (52.0 in)
    Transom height S: 
    F15EH 440 mm (17.3 in)
    F15MH 440 mm (17.3 in)F9.9MH2 440 mm (17.3 in)
    Transom height L: 
    F15EH 567 mm (22.3 in)
    F15MH 567 mm (22.3 in)
    F15PH 567 mm (22.3 in)
    F15PR 567 mm (22.3 in)
    F9.9ER2 567 mm (22.3 in)
    F9.9MH2 567 mm (22.3 in)
    T9.9EH2 567 mm (22.3 in)
    T9.9ER2 567 mm (22.3 in)
    Transom height X: 
    FT9.9DWH 635 mm (25.0 in)
    Weight (AL) S: 
    F15EH 48.0 kg (106 lb)
    F15MH 45.0 kg (99 lb)
    F9.9MH2 45.0 kg (99 lb)
    Weight (AL) L: 
    F15EH 50.0 kg (110 lb)
    F15MH 47.0 kg (104 lb)
    F15PH 55.0 kg (121 lb)
    F15PR 54.0 kg (119 lb)
    F9.9ER2 49.0 kg (108 lb)
    F9.9MH2 47.0 kg (104 lb)
    T9.9EH2 51.0 kg (112 lb)
    T9.9ER2 50.0 kg (110 lb)
    Weight (AL) X: 
    FT9.9DWH 52.5 kg (116 lb) 
    Performance: 
    Full throttle operating range: 
    4500–5500 r/min
    Maximum output: 
    F15EH 11.0 kW@5000 r/min (15 
    HP@5000 r/min)
    F15MH 11.0 kW@5000 r/min (15 
    HP@5000 r/min)
    F15PH 11.0 kW@5000 r/min (15 
    HP@5000 r/min)
    F15PR 11.0 kW@5000 r/min (15 
    HP@5000 r/min)
    F9.9ER2 7.3 kW@5000 r/min (10 
    HP@5000 r/min) 
    						
    							 
    Maintenance 
    49 
    F9.9MH2 7.3 kW@5000 r/min (10 
    HP@5000 r/min)
    FT9.9DWH 7.3 kW@5000 r/min (10 
    HP@5000 r/min)
    T9.9EH2 7.3 kW@5000 r/min (10 
    HP@5000 r/min)
    T9.9ER2 7.3 kW@5000 r/min (10 
    HP@5000 r/min)
    Idling speed (in neutral): 
    F15EH 950  
    ± 
    50 r/min
    F15MH 950  
    ± 
    50 r/min
    F15PH 950  
    ± 
    50 r/min
    F15PR 950  
    ± 
    50 r/min
    F9.9ER2 950  
    ± 
    50 r/min
    F9.9MH2 950  
    ± 
    50 r/min
    FT9.9DWH 1050  
    ± 
    50 r/min
    T9.9EH2 1050  
    ± 
    50 r/min
    T9.9ER2 1050  
    ± 
    50 r/min 
    Engine: 
    Type: 
    4-stroke L
    Displacement: 
    323.0 cm 
    3
     
     (19.71 cu.in)
    Bore  
    × 
     stroke: 
    59.0  
    × 
     59.0 mm (2.32  
    × 
     2.32 in)
    Ignition system: 
    CDI
    Spark plug with resistor (NGK): 
    DPR6EA-9
    Spark plug gap: 
    0.8–0.9 mm (0.031–0.035 in)
    Control system: 
    F15EH Tiller
    F15MH Tiller
    F15PH Tiller
    F15PR Remote control
    F9.9ER2 Remote control
    F9.9MH2 Tiller
    FT9.9DWH Tiller
    T9.9EH2 Tiller
    T9.9ER2 Remote controlStarting system: 
    F15EH Electric
    F15MH Manual
    F15PH Electric
    F15PR Electric
    F9.9ER2 Electric
    F9.9MH2 Manual
    FT9.9DWH Manual and electric
    T9.9EH2 Electric
    T9.9ER2 Electric
    Starting carburetion system: 
    Choke valve
    Valve clearance (cold engine) IN: 
    0.15–0.25 mm (0.0059–0.0098 in)
    Valve clearance (cold engine) EX: 
    0.20–0.30 mm (0.0079–0.0118 in)
    Min. cold cranking amps (CCA/SAE): 
    F15EH 245.0 A
    F15PH 245.0 A
    F15PR 245.0 A
    F9.9ER2 245.0 A
    T9.9EH2 245.0 A
    T9.9ER2 245.0 A
    Min. marine cranking amps (MCA/ABYC): 
    F15EH 323.0 A
    F15PH 323.0 A
    F15PR 323.0 A
    F9.9ER2 323.0 A
    T9.9EH2 323.0 A
    T9.9ER2 323.0 A
    Min. reserve capacity (RC/SAE): 
    F15EH 52 minutes
    F15PH 52 minutes
    F15PR 52 minutes
    F9.9ER2 52 minutes
    T9.9EH2 52 minutes
    T9.9ER2 52 minutes
    Alternator output: 
    F15MH 80 W
    F9.9MH2 80 W
    Alternator output for battery DC:  
    						
    							 
    Maintenance 
    50 
    F15EH 10.0 A
    F15PH 10.0 A
    F15PR 10.0 A
    F9.9ER2 10.0 A
    FT9.9DWH 10.0 A
    T9.9EH2 10.0 A
    T9.9ER2 10.0 A 
    Drive unit: 
    Gear positions: 
    Forward-neutral-reverse
    Gear ratio: 
    F15EH 2.08 (27/13)
    F15MH 2.08 (27/13)
    F15PH 2.08 (27/13)
    F15PR 2.08 (27/13)
    F9.9ER2 2.08 (27/13)
    F9.9MH2 2.08 (27/13)
    FT9.9DWH 2.92 (38/13)
    T9.9EH2 2.92 (38/13)
    T9.9ER2 2.92 (38/13)
    Trim and tilt system: 
    F15EH Manual tilt
    F15MH Manual tilt
    F15PH Power tilt
    F15PR Power tilt
    F9.9ER2 Manual tilt
    F9.9MH2 Manual tilt
    FT9.9DWH Manual tilt
    T9.9EH2 Manual tilt
    T9.9ER2 Manual tilt
    Propeller mark: 
    F15EH J
    F15MH J
    F15PH J
    F15PR J
    F9.9ER2 J
    F9.9MH2 J
    FT9.9DWH R
    T9.9EH2 R
    T9.9ER2 R 
    Fuel and oil: 
    Recommended fuel: 
    Regular unleaded gasoline
    Min. pump octane: 
    F15EH 86
    F15MH 86
    F15PH 86
    F15PR 86
    F9.9ER2 86
    F9.9MH2 86
    T9.9EH2 86
    T9.9ER2 86
    Fuel tank capacity: 
    25 L (6.60 US gal) (5.50 Imp.gal)
    Recommended engine oil: 
    4-stroke outboard motor oil
    Engine oil grade API: 
    API SE, SF, SG, SH, SJ, SL
    Engine oil type SAE: 
    SAE10W30 or SAE10W40
    Lubrication: 
    Wet sump
    Engine oil quantity (excluding oil filter): 
    1.0 L (1.06 US qt) (0.88 Imp.qt)
    Recommended gear oil: 
    Hypoid gear oil SAE#90
    Gear oil quantity: 
    F15EH 250.0 cm 
    3
     
     (8.45 US oz) (8.82 
    Imp.oz)
    F15MH 250.0 cm 
    3
     
     (8.45 US oz) (8.82 
    Imp.oz)
    F15PH 250.0 cm 
    3
     
     (8.45 US oz) (8.82 
    Imp.oz)
    F15PR 250.0 cm 
    3
     
     (8.45 US oz) (8.82 
    Imp.oz)
    F9.9ER2 250.0 cm 
    3
     
     (8.45 US oz) 
    (8.82 Imp.oz)
    F9.9MH2 250.0 cm 
    3
     
     (8.45 US oz) 
    (8.82 Imp.oz)
    FT9.9DWH 370.0 cm 
    3
     
     (12.51 US oz) 
    (13.05 Imp.oz)
    T9.9EH2 370.0 cm 
    3
     
     (12.51 US oz)  
    						
    							 
    Maintenance 
    51 
    (13.05 Imp.oz)
    T9.9ER2 370.0 cm 
    3
     
     (12.51 US oz) 
    (13.05 Imp.oz) 
    Tightening torque for engine: 
    Spark plug: 
    18.0 Nm (13.3 ft-lb) (1.84 kgf-m)
    Propeller nut: 
    F15EH 17.0 Nm (12.5 ft-lb) (1.73 
    kgf-m)
    F15MH 17.0 Nm (12.5 ft-lb) (1.73 
    kgf-m)
    F15PH 17.0 Nm (12.5 ft-lb) (1.73 
    kgf-m)
    F15PR 17.0 Nm (12.5 ft-lb) (1.73 
    kgf-m)
    F9.9ER2 17.0 Nm (12.5 ft-lb) (1.73 
    kgf-m)
    F9.9MH2 17.0 Nm (12.5 ft-lb) (1.73 
    kgf-m)
    FT9.9DWH 21.0 Nm (15.5 ft-lb) (2.14 
    kgf-m)
    T9.9EH2 21.0 Nm (15.5 ft-lb) (2.14 
    kgf-m)
    T9.9ER2 21.0 Nm (15.5 ft-lb) (2.14 
    kgf-m)
    Engine oil drain bolt: 
    28.0 Nm (20.7 ft-lb) (2.86 kgf-m)
    Engine oil filter: 
    18.0 Nm (13.3 ft-lb) (1.84 kgf-m) 
    EMU28222 
    Transporting and storing 
    outboard motor
    WARNING
     
    EWM00690  
     
    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. 
     
    USE CARE when transporting fuel tank,
    whether in a boat or car. 
     
    DO NOT fill fuel container to maximumcapacity. Gasoline will expand consid-
    erably as it warms up and can build up
    pressure in the fuel container. This can
    cause fuel leakage and a potential fire 
    hazard.
    WARNING
     
    EWM00700  
    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 
    motor accidentally falls.
    CAUTION:
     
    ECM00660  
    Do not use the tilt support lever or knob
    when trailering the boat. The outboard
    motor could shake loose from the tilt sup-
    port and fall. If the motor cannot be trail-
    ered in the normal running position, use
    an additional support device to secure it 
    in the tilt position. 
    The outboard motor should be trailered and
    stored in the normal running position. If there
    is insufficient road clearance in this position,
    then trailer the outboard motor in the tilt po-
    sition using a motor support device such as
    a transom saver bar. Consult your Yamaha
    dealer for further details. 
    EMU28235 
    Clamp screw mounting models 
    When transporting or storing the outboard
    motor while removed from a boat, keep the
    outboard motor in the attitude shown. 
    						
    							 
    Maintenance 
    52
    NOTE:
     
    Place a towel or something similar under the 
    outboard motor to protect it from damage. 
    EMU28241 
    Storing outboard motor 
    When storing your Yamaha outboard motor
    for prolonged periods of time (2 months or
    longer), several important procedures must
    be performed to prevent excessive damage.
    It is advisable to have your outboard motor
    serviced by an authorized Yamaha dealer
    prior to storage. However, you, the owner,
    with a minimum of tools, can perform the fol-
    lowing procedures.
    CAUTION:
     
    ECM01080  
     
    To prevent problems which can be
    caused by oil entering the cylinder from
    the sump, keep the outboard motor in
    the attitude shown when transportingand storing it. If storing or transporting
    the outboard motor on its side (not up-
    right), put it on a cushion after draining
    the engine oil. 
     
    Do not place the outboard motor on its
    side before the cooling water has
    drained from it completely, otherwise
    water may enter the cylinder through
    the exhaust port and cause engine trou-
    ble. 
     
    Store the outboard motor in a dry, well- 
    ventilated place, not in direct sunlight. 
    EMU28301 
    Procedure 
    EMU28372 
    Flushing in a test tank 
    1. Wash the outboard motor body using
    fresh water. For further information, see
    page 55.
    2. 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.
    3. Remove the engine top cowling and si-
    lencer cover.
    4. Install the outboard motor on the test
    tank.
    ZMU02049
    ZMU02050 
    						
    							 
    Maintenance 
    53 
    5. Fill the tank with fresh water to above the
    level of the anti-cavitation plate.
    CAUTION:
     
    ECM00300  
    Do not run the engine without supplying
    it with cooling water. Either the engine
    water pump will be damaged or the en-
    gine will be damaged from overheating.
    Before starting the engine, be sure to
    supply water to the cooling water passag- 
    es.
    CAUTION:
     
    ECM00290  
    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. 
    6. Cooling system flushing is essential to
    prevent the cooling system from clog-
    ging up with salt, sand, or dirt. In addi-
    tion, fogging of the engine is mandatory
    to prevent excessive engine damage
    due to rust. Perform the flushing and
    fogging at the same time.
    WARNING
     
    EWM00090  
     
    Do not touch or remove electrical partswhen starting or during operation. 
     
    Keep hands, hair, and clothes away
    from the flywheel and other rotating 
    parts while the engine is running. 
    7. Run the engine at a fast idle for 10–15
    minutes in neutral position.
    8. Just prior to turning off the engine, quick-
    ly spray “Yamaha Stor-Rite Engine Fog-
    ging Oil” (Part No. LUB-STRRT-12-00)
    alternately into each carburetor or the
    fogging hole of the silencer cover, if
    equipped. When properly done, the en-
    gine will smoke excessively and almost
    stall.
    9. Remove the outboard motor from the
    test tank.
    10. Drain the cooling water completely out
    of the motor. Clean the body thoroughly.
    11. Install the silencer cover/cap and top
    cowling. 
    EMU28400 
    Lubrication (except oil injection 
    models) 
    1. Grease the spark plug threads and in-
    stall the spark plug(s) and torque to
    proper specification. For information on
    spark plug installation, see page 61.
    2. Change the gear oil. For instructions,
    see page 69. Inspect the oil for the pres-
    ence of water that indicates a leaky seal.
    Seal replacement should be performed
    by an authorized Yamaha dealer prior to
    use.
    3. Grease all grease fittings. For further de-
    tails, see page 59. 
    EMU28421 
    Cleaning and anticorrosion 
    measures 
    1. Wash down the exterior of the outboard
    motor with fresh water and dry off com-
    pletely. 
    1. Water surface
    2. Lowest water level
    ZMU02051
    1
    2 
    						
    							 
    Maintenance 
    54 
    2. Spray the outboard motor 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). 
    EMU28430 
    Battery care
    WARNING
     
    EWM00330  
    Battery electrolytic fluid is dangerous; it
    contains sulfuric acid and therefore is
    poisonous and highly caustic.
    Always follow these preventive mea-
    sures: 
     
    Avoid bodily contact with electrolytic
    fluid as it can cause severe burns or
    permanent eye injury. 
     
    Wear protective eye gear when han-
    dling or working near batteries.
    Antidote (EXTERNAL): 
     
    SKIN - Flush with water. 
     
    EYES - Flush with water for 15 minutes
    and get immediate medical attention.
    Antidote (INTERNAL): 
     
    Drink large quantities of water or milk
    followed by milk of magnesia, beaten
    egg, or vegetable oil. Get immediate
    medical attention.
    Batteries also generate explosive hydro-
    gen gas; therefore, you should always
    follow these preventive measures: 
     
    Charge batteries in a well-ventilated ar-
    ea. 
     
    Keep batteries away from fire, sparks,
    or open flames (for example: welding
    equipment, lighted cigarettes, and so
    on.) 
     
    DO NOT SMOKE when charging or han-
    dling batteries.
    KEEP BATTERIES AND ELECTROLYTIC 
    FLUID OUT OF REACH OF CHILDREN. 
    Batteries vary among manufacturers. There-
    fore the following procedures may not al-
    ways apply. Consult your battery
    manufacturer’s instructions.
    Procedure
    1. Disconnect and remove the battery from
    the boat. Always disconnect the black
    negative cable first to prevent the risk of
    shorting.
    2. Clean the battery casing and terminals.
    Fill each cell to the upper level with dis-
    tilled water.
    3. Store the battery on a level surface in a
    cool, dry, well-ventilated place out of di-
    rect sunlight.
    4. Once a month, check the specific gravity
    of the electrolyte and recharge as re-
    quired to prolong battery life.
     
    EMU28441 
    Flushing power unit 
    Perform this procedure right after operation
    for the most thorough flushing.
    CAUTION:
     
    ECM01530  
    Do not perform this procedure while the
    engine is running. The water pump may
    be damaged and severe damage from 
    overheating can result. 
    1. After shutting off the engine, unscrew
    the garden hose connector from the fit-
    ting on the bottom cowling. 
    						
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