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Honda Bf 5 User Manual

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    							69 Carburetor Modif ication f or
    High Altitude Operation
    TECHNICAL AND CONSUMER INFORMATION
    When the carburetor has been
    modif ied f or high altitude operation,
    the air-f uel mixture will be too lean
    f or low altitude use. Operation at
    altitudes below 5,000 f eet (1,500
    meters) with modif ied carburetor
    may cause the engine to overheat
    and result in serious engine damage.
    For use at low altitudes, have an
    authorized Honda marine dealer
    return the carburetor to original
    f actory specif ications. Even with carburetor modification,
    engine horsepower will decrease
    about 3.5% f or each 1,000-f oot (300-
    meter) increase in altitude. The ef f ect
    of altitude on horsepower will be
    greater than this if no carburetor
    modif ication is made. At high altitude, the standard
    carburetor air-fuel mixture will be
    too rich. Perf ormance will decrease,
    and f uel consumption will increase.
    A very rich mixture will also f oul the
    spark plug and cause hard starting.
    High altitude perf ormance can be
    improved by specific modifications
    to the carburetor. If you always
    operate your outboard motor at
    altitudes above 5,000 f eet (1,500
    meters), have an authorized Honda
    marine dealer perform this carburetor
    modification.
    04/03/15 10:38:00 31ZV1630_070 
    						
    							70 Oxygenated Fuels
    ETHANOL:
    MTBE:
    METHANOL:
    TECHNICAL AND CONSUMER INFORMATION
    Some conventional gasolines are
    being blended with alcohol or an
    ether compound. These gasolines are
    collectively referred to as oxygenated
    f uels. To meet clean air standards,
    some areas of the United States and
    Canada use oxygenated fuels to help
    reduce emissions.
    If you use an oxygenated fuel, be
    sure it is unleaded and meets the
    minimum octane rating requirement.
    Before using an oxygenated fuel, try
    to confirm the fuel’s contents. Some
    states/provinces require this
    information to be posted on the pump.The following are the EPA-approved
    percentages of oxygenates:
    ethyl or grain alcohol;
    10% by volume.
    You may use gasoline containing up
    to 10% ethanol by volume. Gasoline
    containing ethanol may be marketed
    under the name ‘‘Gasohol’’.
    Methyl Tertiary Butyl Ether;
    15% by volume.
    You may use gasoline containing up
    to 15% MTBE by volume.
    methyl or wood
    alcohol; 5% by volume.
    You may use gasoline containing up
    to 5% methanol by volume, as long
    as it also contains cosolvents and
    corrosion inhibitors to protect the
    f uel system. Gasoline containing
    more than 5% methanol by volume
    may cause starting and/or
    performance problems. It may alsodamage metal, rubber, and plastic
    parts of your fuel system.
    If you notice any undesirable
    operating symptoms, try another
    service station, or switch to another
    brand of gasoline.
    Fuel system damage or performance
    problems resulting f rom the use of an
    oxygenated fuel containing more
    than the percentages of oxygenates
    mentioned above are not covered
    under warranty.
    04/03/15 10:38:12 31ZV1630_071 
    						
    							71 Emission Control System
    Inf ormation
    TECHNICAL AND CONSUMER INFORMATION
    Source of EmissionsTampering and Altering The U.S. and Calif ornia Clean
    Air Acts
    The combustion process produces
    carbon monoxide, oxides of nitrogen,
    and hydrocarbons. Control of
    hydrocarbons and oxides of nitrogen
    is very important because, under
    certain conditions, they react to f orm
    photochemical smog when subjected
    to sunlight. Carbon monoxide does
    not react in the same way, but it is
    toxic.
    Honda utilizes lean carburetor
    settings and other systems to reduce
    the emissions of carbon monoxide,
    oxides of nitrogen, and hydrocarbons.Tampering with or altering the
    emission control system may increase
    emissions beyond the legal limit.
    Among those acts that constitute
    tampering are:
    Removal or alteration of any part
    of the intake, fuel, or exhaust
    systems.
    Alterations that would cause the
    engine to operate outside its design
    parameters. EPA and California regulations
    require all manufacturers to furnish
    written instructions describing the
    operation and maintenance of
    emission control systems.
    The f ollowing instructions and
    procedures must be followed in order
    to keep the emissions from your
    Honda engine within the emission
    standards.
    04/03/15 10:38:22 31ZV1630_072 
    						
    							72
    TECHNICAL AND CONSUMER INFORMATION
    Maintenance Replacement Parts Problems That May Af f ect
    Emissions
    A manuf acturer of an af termarket
    part assumes the responsibility that
    the part will not adversely af f ect
    emission performance. The
    manufacturer or rebuilder of the part
    must certif y that use of the part will
    not result in a f ailure of the engine to
    comply with emission regulations.
    Follow the maintenance schedule on
    p. . Remember that this schedule
    is based on the assumption that your
    machine will be used for its designed
    purpose. Sustained high-load
    operation, or use in unusual
    conditions, will require more
    frequent service. If you are aware of any of the
    following symptoms, have your
    engine inspected and repaired by
    your servicing dealer.
    Hard starting or stalling af ter
    starting.
    Rough idle.
    Misfiring or backfiring under load.
    Afterburning (backfiring).
    Black exhaust smoke or high fuel
    consumption.The emission control systems on
    your Honda engine were designed,
    built, and certif ied to conf orm with
    EPA and California emission
    regulations. We recommend the use
    of genuine Honda parts whenever
    you have maintenance done. These
    original-design replacement parts are
    manufactured to the same standards
    as the original parts, so you can be
    confident of their performance. The
    use of replacement parts that are not
    of the original design and quality
    may impair the effectiveness of your
    emission control system.39
    04/03/15 10:38:35 31ZV1630_073 
    						
    							73 Star Label
    The Symbol for Cleaner Marine Engines:
    Cleaner Air and Water -
    Better Fuel Economy -
    Longer Emission Warranty -
    TECHNICAL AND CONSUMER INFORMATION
    The Star Label means Cleaner Marine Engine
    A Star label was applied to this
    outboard motor in accordance with
    the requirements of the California
    Air Resources Board.
    f or healthier lif estyle and environment.
    burns up to 30 - 40 percent less gas and oil than
    conventional carbureted two-stroke engines, saving money and resources.
    protects consumer for worry free operation. This engine has been certified as a:
    04/03/15 10:38:48 31ZV1630_074 
    						
    							74Two Stars
    Very Low
    Emission One Star
    Low
    Emission
    Three Stars
    Ultra Low
    Emission
    Four Stars
    Super Ultra
    Low Emission
    TECHNICAL AND CONSUMER INFORMATION
    The one-star label identifies engines that meet the Air Resources Board’s
    Personal Watercraft and Outboard marine engine 2001 exhaust emission
    standards. Engines meeting these standards have 75% lower emissions than
    conventional carbureted two-stroke engines. These engines are equivalent to
    the U.S.EPA’s 2006 standards for marine engines.
    The two-star label identif ies engines that meet the Air Resources Board’s
    Personal Watercraft and Outboard marine engine 2004 exhaust emission
    standards. Engines meeting these standards have 20% lower emissions than
    One Star-Low Emission engines.
    The four-star label identifies engines that meet the Air Resources Board’s
    Sterndrive and Inboard marine engine 2009 exhaust emission standards.
    Personal Watercraf t and Outboard marine engines may also comply with
    these standards. Engines meeting these standards have 90% lower emissions
    than One Star-Low Emission engines. The three-star label identifies engines that meet the Air Resources Board’s
    Personal Watercraft and Outboard marine engine 2008 exhaust emission
    standards or the Sterndrive and inboard marine engine 2003-2008 exhaust
    emission standards. Engines meeting these standards have 65% lower
    emissions than One Star-Low Emission engines.
    Cleaner Watercraf t - Get the Facts
    1-800-END-SMOG
    www.arb.ca.gov
    04/03/15 10:39:00 31ZV1630_075 
    						
    							µ
    µµ ···
    µ
    µ
    ¶
    ¶
    ¶ BF5A
    BADS
    13.8 in (350 mm)LA SA
    20.7 in (525 mm)
    39.6 in (1,005 mm) 44.7 in (1,135 mm)
    17.5 in (445 mm) 22.5 in (572 mm)
    59.5 lbs (27.0 kg) 60.6 lbs (27.5 kg)
    3.7 kW (5.0 HP)
    4,500 5,000 rpm
    4 stroke OHV 1 cylinder, water-cooled
    7.7 cu-in (127 cm
    )
    0.028 0.031 in (0.70 0.80 mm)
    Recoil starter
    Transistorized Ignition Control Module (ICM)
    Trochoid pump pressure lubrication
    API standard (SG, SH, SJ)
    SAE 10W-30
    API standard (GL 4/5)
    SAE 90 outboard motor gear oil
    0.1 US qt (0.1
    ) 0.58 US qt (0.55)
    Water cooling with thermostat
    Underwater exhaustBPR5ES (NGK)
    W16EPR-U (DENSO)
    Diaphragm type fuel pump
    Automotive unleaded gasoline
    (86 pump octane or higher)
    3.2 US gal (12
    )
    Forward-Neutral-Reverse (dog type)
    45° right and left
    5 stages (5°,9°,13°,17°,21°)
    3 stages adjustment (30°, 45° and 70°)
    7-25/32 7-31/64 in (3-200 190 mm)
    0.028 0.031 in
    (0.70 0.80 mm)
    1,300 100 rpm
    0.10 0.04 mm
    0.15 0.04 mm
    No other adjustment is neededSeepage45
    See shop
    manual
    See shop
    manual
    ULTRA LOW EMISSION Gear case: Engine:
    Engine:
    Gear case:Exhaust:
    Intake:
    75 Specif ications
    TECHNICAL AND CONSUMER INFORMATION
    Tuneup
    MODEL
    Description Code
    Type
    Overall length
    Overall width
    Overall height
    Transom height
    Weight
    Rated power
    Full throttle range
    Engine type
    Displacement
    Sparkpluggap
    Starter system
    Ignition system
    Lubrication system
    Specified oil
    Oil capacity
    CARB star label
    Cooling system
    Exhaust systemSpark plugs
    Fuel pump
    Fuel
    Tank capacity
    Gear change
    Steering angle
    Transom angle
    Tilt angle
    Standard propeller
    (No. of blades-
    diameter pitch)
    Sparkpluggap
    Idle speed
    Valve clearance
    (cold)
    Other specifications
    Honda outboards are power rated in accordance with NMMA procedures and using the ICOMIA standard 28/23.
    04/03/15 10:39:42 31ZV1630_076 
    						
    							76 CONSUMER INFORMATION
    Honda PublicationsCustomer Service Inf ormation
    American Honda Motor Co., Inc.
    TECHNICAL AND CONSUMER INFORMATION
    Shop Manual
    Parts Catalog
    Honda Marine dealership personnel
    are trained professionals. They
    should be able to answer any
    question you may have. If you
    encounter a problem that your dealer
    does not solve to your satisfaction,
    please discuss it with the dealership’s
    management. The Service Manager
    or General Manager can help. Almost
    all problems are solved in this way.
    If you are dissatisf ied with the
    decision made by the dealership’s
    management, contact the Honda
    Marine Customer Relations Office.
    You can write:
    Marine Division
    Customer Relations Of f ice
    4900 Marconi Drive
    Alpharetta, Georgia 30005-8847Or telephone: (770) 497-6400
    When you write or call, please give
    us this inf ormation:
    Model and serial numbers (p. )
    Name of the dealer who sold the
    outboard motor to you
    Name and address of the dealer
    who services your outboard motor
    Date of purchase
    Your name, address, and telephone
    number
    A detailed description of the
    problem These publications will give you
    additional information for
    maintaining and repairing your
    outboard motor. You may order them
    from your Honda marine dealer.
    This manual covers complete
    maintenance and overhaul procedures.
    It is intended to be used by a skilled
    technician.
    This manual provides complete,
    illustrated parts lists.68
    04/03/15 10:39:59 31ZV1630_077 
    						
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