GENERAL INFORMATION
EMISSION CONTROL SYSTEMS
The U.S. Environmental Protection Agency (EPA), and the California
Air
Resources Board (CAR
B)
require
that
off-road
motorcycle
comply
with
applicable exhaust emissions standards
during
it useful life,
when
operated
and
maintained
according to the instructions provided.
SOURCE
OF
EMISSIONS
The combustion process produces carbon monoxide, oxides
of
nitrogen and
hy
drocarbons. Control
of
hydrocarbons and
oxides
of
nitrogen is
very
important
because,
under
certain conditions,
they
react
to
form
photochemical
smog
when
sub-
jected to sunlight.
Carbon
monoxide
does
not
react in the sarna way,
but
is toxic.
Honda
Motor
Co., Ltd.
uti
lizes appropriate carburetor settings
as
well
as
other
systems,
to
reduce carbon
monoxide
and
hydrocarbons.
EXHAUST EMISSION CONTROL SYSTEM
The exhaust emission control system is composed
of
lean carburetor setting,
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 sepa-
rate
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 thr
ough
the air cleaner and carburetor.
AIR CLEANI
'R
~
FRE$HA
IR
_
BLOW-BY GAS
1-
40
•
•
•
•
To Next Page
Loading...
Need help?
General
