Honda Bf8a Owners Manual

69
ENGINE SERIAL NUMBER
PRODUCT
IDENTIFICATION NUMBER
TECHNICAL AND CONSUMER INFORMATION
TECHNICAL INFORMATION
Serial Number Locations
Record the engine serial number, the product identification  number and the
date of purchase in the space below. You will need these serial numbers when
ordering parts, and when making technical or warranty inquiries (see page 78).
Engine serial number: _________________________________________
Product identification number: ___________________________________
Date of...

70
NOTICE
TECHNICAL AND CONSUMER INFORMATION
Carburetor Modification for High Altitude Operation
At high altitude, the standard carburetor air-fuel mixture will be too rich.
Performance will decrease, and fuel consumption will increase. A very rich
mixture will also foul the spark plug and cause hard starting.
High altitude performance can be improved by specific modifications to the
carburetor. If you always operate your outboard motor at altitudes above
5,000 feet (1,500 meters), have an authorized...

71 TECHNICAL AND CONSUMER INFORMATION
Oxygenated Fuels
Some conventional gasolines are being blended with alcohol or an ether
compound. These gasolines are collectively referred to as oxygenated fuels.
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...

72 TECHNICAL AND CONSUMER INFORMATION
Emission Control System Information
Source of Emissions
The combustion process produces carbon monoxide, oxides of nitrogen, and
hydrocarbons. Control of hydrocarbons and oxides of nitrogen is very impor-
tant because, under certain conditions, they react to form 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...

73 TECHNICAL AND CONSUMER INFORMATION
Problems That May Affect Emissions
If you are aware of any of the following symptoms, have your engine inspected
and repaired by your servicing dealer.
•Hard starting or stalling after starting.
•Rough idle
•Misfiring or backfiring under load.
•Afterburning (backfiring).
•Black exhaust smoke or high fuel consumption.
Replacement Parts
The emission control systems on your Honda engine were designed, built, and
certified to conform with EPA and California emission...

74
TECHNICAL AND CONSUMER INFORMATION
Star Label
A Star label was applied to this outboard motor in accordance with the
requirements of the California Air Resources Board.
The Star Label means Cleaner Marine Engine
This engine has been certified as a:
The Symbol for Cleaner Marine Engines:
Cleaner Air and Water - for healthier lifestyle and environment.
Better Fuel Economy - burns up to 30 - 40 percent less gas and oil than
conventional carbureted two-stroke engines, saving money and
resources.
Longer...

75
TECHNICAL AND CONSUMER INFORMATION
The two-star label identifies 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 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...

76 TECHNICAL AND CONSUMER INFORMATION
Specifications
Model
Description code
Rated power
Full throttle range
Engine type
Displacement
Spark plug gap
Starter system
Ignition system
Lubrication system
Specified oil
Oil capacity
CARB star label
D.C. output
Cooling system
Exhaust system
Spark plugs
Fuel pump
Fuel
Tank capacity
Steering equipment
Tilt angle
Steering angle
Dimensions
Length
Height
Width
Outboard motor
transom height
Standard propeller
(No. of blades-diameter x pitch)
Gear change
Dry weight...

77 TECHNICAL AND CONSUMER INFORMATION
Tuneup
Spark plug gap 0.024-0.028 in (0.60-0.70 mm) See page 54.
Idle speed 1,200 ± 100 See shop manual.
Valve clearance Intake:    
 0.12 ± 0.02 mm See shop manual.
(cold) Exhaust: 0.20 ± 0.02 mm
Other specifications                          No other adjustments needed.
*BF8A OM-E(4763904) 01-92SC 3/17/06, 10:0777 

78 TECHNICAL AND CONSUMER INFORMATION
CONSUMER INFORMATION
Honda Publications
These publications will give you additional information for maintaining and
repairing your outboard motor.
Shop Manual
This manual covers complete maintenance and overhaul procedures.
It is intended to be used by a skilled technician.
Available through your Honda marine dealer or through Helm Inc. at
1 888-292-5395 or visit www.Honda-marine.com > product manuals.
Parts Catalog
This manual provides complete, illustrated parts...