GENERAL INFORMATION
EMISSION CONTROL SYSTEMS
'04-
'06:
The California
Air
Resources
Board
(CAR
B)
require
manufacturers
to
certify
that
their
motorcycles
comply
with
applicable
exhaust
emissions
standards
during
their
useful life,
when
operated and
main
tained
according
to
the
instructions
provided, and that motorcycles
built
after
January
1,
1983
comply
with
applicable noise emission 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
Limited
Warranty
for
Honda
Motorcycle
Emission
Control Systems is necessary in
order
to
keep the emissions system
warranty
in effect.
After
'06:
The U.S.
Environmental
Protection
Agency
(EPA), and
the
California
Air
Resources
Board
(CARB)
require
that
off-road
motorcycle
comply
with
applicable
exhaust
emissions
standards
during
its
useful
life,
when
operated
and
maintained
according
to
the
instruction
provided
.
SOURCE
OF
EMISSIONS
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
form
photochemical
smog
when
subjected
to
sunlight.
Carbon
monoxide
does
not
react in
the
same
way,
but
is toxic.
Honda
Motor
Co.,
ltd
. utilizes
various
systems
to
reduce
carbon
monoxide,
oxides
of
nitrogen,
and
hydrocarbon.
EXHAUST EMISSION CONTROL SYSTEM
(After
'06)
The
exhaust
emission
control
system
includes
a
secondary
air
injection
system
and
lean
carburetor
settings, no
adjustments
should
be
made
except
for
high
altitude
setting
and
idle
speed
adjustment
with
the
throttle
stop screw. The
exhaust
emission
control
system
is separate
from
the
crankcase
emission
control
system.
CRANKCASE EMISSION CONTROL SYSTEM
The
engine
is
equipped
with
a
closed
crankcase
system
to
prevent
discharging
crankcase
emissions
into
the
atmosphere.
Blow-by
gas is
returned
to
the
combustion
chamber
through
the
air
cleaner
and
carburetor.
AIR CLEANI'R
DRAIN PLUG
~
FRESH AIR
_
BLOW-BY GAS
1-
33
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