Honda Workshop For Bf5 Maintenance Manual

							69
TAKING CARE OF UNEXPECTED PROBLEMS
HARD STARTING OR STALLS
AFTER STARTING
(continued)
Take outboard motor to an
authorized Honda Marine dealer,
or refer to the shop manual.Faulty thermostat or water pump. Replace or repair faulty
components as necessary. ENGINE OVERHEATS Possible Cause CorrectionCarburetor malfunction, fuel pump
f ailure, ignition malf unction, etc.Replace or repair faulty
components as necessary. Take outboard motor to an
authorized Honda Marine dealer,
or refer to the shop manual.Possible Cause Correction
Spark plug f aulty, f ouled, or
improperly gapped. Remove and inspect spark plug. Gap or replace spark plug (p. ).
Check water intakes. Water intakes clogged. Clean water intakes.
2. 3.
4.
1.49
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							70
TAKING CARE OF UNEXPECTED PROBLEMS
Possible Cause Correction
Take outboard motor to an
authorized Honda Marine dealer,
or refer to the shop manual. ENGINE WILL NOT DRIVE
THE PROPELLER
Check shear pin. Broken shear pin.
Damaged gearshif t mechanism.Replace shear pin (p. ).
Replace or repair faulty
components as necessary. 2. 1.57
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							71 OIL PRESSURE INDICATOR
GOES OFF AND ENGINE
SPEED IS LIMITED
TAKING CARE OF UNEXPECTED PROBLEMS
OIL PRESSURE INDICATOR
If the throttle is closed suddenly af ter
f ull throttle operation, engine speed
may drop below the specif ied idle
rpm, and that could activate the
engine protection system
momentarily.
If low oil pressure activates the
engine protection system, stop the
engine, check the engine oil level
(p. ), and add oil if needed.
If the engine protection system
remains activated after 30 seconds,
return to the nearest boat landing,
and have the outboard motor
inspected by an authorized Honda
Marine dealer. Low oil pressure may be the result of
a low engine oil level, or there may
be a problem with the engine
lubrication system. If oil pressure becomes low, the
green indicator will go off. If you are
at cruising speed, engine speed will
decrease gradually.
With the engine oil at the
recommended level, restart the
engine. If the lubrication system is
OK, the green indicator should come
on within 30 seconds, and the engine
will respond normally to throttle grip
operation.43
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							72 SUBMERGED OUTBOARD
MOTOR
TAKING CARE OF UNEXPECTED PROBLEMS
STARTER GRIP
Change the engine oil as described
on p. . If there was water in the
engine crankcase, or if the used
engine oil showed signs of water
contamination, then a second
engine oil change should be
performed after running the engine
for half an hour.
If the engine was running when it
submerged, there may be
mechanical damage, such as a bent
connecting rod. If the engine binds
when cranked, do not attempt to
run the engine until it has been
repaired. Remove the spark plug (p. ),
and remove the emergency stop
switch clip f rom the emergency
stop switch. Pull the starter grip,
rotate the f lywheel a f ew
revolutions to completely expel
any water f rom the cylinder. Drain the carburetor as described
on p. . Remove the engine cover, and
rinse the outboard motor with
f resh water to remove salt water,
sand, mud, etc. If there is a Honda Marine dealership
nearby, take the outboard motor to
the dealer immediately. If you are f ar
f rom a dealer, proceed as f ollows: A submerged outboard motor must
be serviced immediately af ter it is
recovered f rom the water in order to
minimize corrosion.
1.
2.3.
4. 44
49
62
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							73
TAKING CARE OF UNEXPECTED PROBLEMS
When cranking the engine with
an open ignition circuit (spark
plug removed f rom the ignition
circuit), remove the emergency
stop switch clip f rom the
emergency stop switch to
prevent possible damage to the
ignition system.
Reinstall the spark plug, and put
the emergency stop switch clip
into the emergency stop switch. Pour a teaspoon of engine oil into
the spark plug hole, and then pull
the starter grip several times to
lubricate the inside of the cylinder.If the engine f ails to start, remove
the spark plug, clean and dry it,
then reinstall the spark plug and
attempt to start the engine again.
If the engine starts, and no
mechanical damage is evident,
continue to run the engine for a
half hour or longer. Be sure the
water level is at least 2 inches (5
cm) above the antiventilation plate
to avoid overheating and water
pump damage.
As soon as possible, take the
outboard motor to an authorized
Honda Marine dealer for
inspection and service. Attempt to start the engine. Be
sure the water level is at least 2
inches (5 cm) above the
antiventilation plate.
5.
6.7.
8.
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							74 TECHNICAL INFORMATION
Serial Number Locations
TECHNICAL AND CONSUMER INFORMATION
PRODUCT IDENTIFICATION
NUMBERENGINE SERIAL NUMBER
Engine serial number: Product identification number: The product identification number is
stamped on the swivel case.The engine serial number is
stamped on the right side of the
engine. Record the product identification
number, the engine serial number,
and the date of purchase in the space
provided on this page. You will need
these numbers when ordering parts,
and when making technical or
warranty inquiries (p. ).
Date of purchase: 82
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							75 Carburetor Modif ication f or
High Altitude Operation
TECHNICAL AND CONSUMER INFORMATION
When the carburetor has been
modif ied f or operation at one of the
higher altitude ranges, the air-f uel
mixture will be too lean f or
operation at a lower altitude.
Operation at altitudes below the
range f or which the carburetor is set
may cause the engine to overheat
and result in serious engine damage.
For use at lower altitudes, have an
authorized Honda Marine dealer
modif y the carburetor f or the
correct altitude range. At altitudes above 2,000 f t (600
meters), the standard carburetor air-
f uel 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.
Your dealer can determine the
appropriate carburetor settings for the
altitude at which you operate your
outboard motor. Operation at an altitude that dif f ers
from that at which this engine was
certified, for extended periods of
time, may increase emissions.
High altitude operation can be
improved by specific modifications
to the carburetor. If you usually
operate your outboard motor at 2,000
ft (600 meters) or above, consult with
your authorized Honda Marine dealer.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. Settings:
Standard setting is f or sea level to
2,000 ft (600 meters).
Mid-altitude setting is f or 2,000 f t
(600 meters) to 5,000 ft (1,500
meters).
High-altitude setting is f or 5,000 f t
(1,500 meters) and above.
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							76 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.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.
Honda utilizes appropriate air/f uel
ratios and other emissions control
systems to reduce the emissions of
carbon monoxide, oxides of nitrogen,
and hydrocarbons.
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							77
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. 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 Honda Genuine 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.Follow the maintenance schedule on
(p. and ). 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.41 42
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							78 Star Label
The Symbol for Cleaner Marine Engines:
Cleaner Air and Water -
Better Fuel Economy -
Longer Emission Warranty - US, Puerto Rico, and US Virgin
Islands
TECHNICAL AND CONSUMER INFORMATION
The Star Label means Cleaner Marine Engine
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:
A Star label was applied to this
outboard motor in accordance with
the requirements of the California
Air Resources Board.
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