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GENERAL INFORMATION
EMISSION CONTROL
SYSTEMS
The U.S. environmental
Protection Agency
and
California Air Resources Board
(CARB) require
manufacturers
to
certify
that
their
motorcycles comply
with
applicable exhaust emissions standards during their useful life, when
operated and
maintained
according
to
the
instructions
provided, and that motorcycles built after January 1 , 1 983 comply with applicable
noise emis¬
sion standards for
one year or 6,000
km
(3,730
miles)
after the time of sale
to
the ultimate purchaser, when
operated
and
maintained according
to
the instructions provided. Compliance
with the
terms
of the Distributor's Warranties for Honda
Motorcycle
Emission Control Systems is
necessary
in
order
to keep
the emissions
system warranty
in
effect.
I
SOURCE OF EMISSIONS
I
The combustion process produces carbon
monoxide and hydrocarbons.
Control of hydrocarbons
is very important 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 Motor Co., Ltd. utilized lean carburetor settings
as well
as
other
systems, to
reduce carbon monoxide
and hydro¬
carbons.
I
CRANKCASE EMISSION CONTROL SYSTEM
The crankcase emission control
system routes
Crankcase emissions
through
the
air cleaner
and into the combustion chamber.
Condensed crankcase
vapors
are accumulated in
an
air/oil
separator
and drain tube which
must
be
emptied periodically.
Refer
to
the
Maintenance
Schedule
(page
3-4).
The
drain tube needs
to
be checked
for
oil accumulation more
frequently if
the ma¬
chine has been ridden
mostly
at
high speeds or
in
rain.
>
1)
AIR CLEANER
>)
i2)
CARBURETOR
O
I
Pc
(3)
:
BLOW-BY GAS
(4)
Cl
:
FRESH AIR
>
*i
orr
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