166
Exhaust Emission Control System
(California only)
Crankcase Emission Control System
(California only)
Source of Emissions
Technical Information
Emission Control Systems
The exhaust emission control system is
composed of lean carburetor settings, and no
adjustments should be made except idle speed
adjustment with the throttle stop screw.
The exhaust emission control system is separate
from the 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 the
carburetor.
The combustion process produces carbon
monoxide (CO) and hydrocarbons (HC).
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. utilizes lean carburetor
settings and other systems to reduce carbon
monoxide and hydrocarbons.
03/05/20 10:21:18 31KCY680_175
Содержание 2004 XR400R
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Страница 23: ...kickstarter rear brake pedal 14 Component Locations Operating Controls 03 05 20 09 58 08 31KCY680_023 ...
Страница 29: ...20 Operating Controls 03 05 20 09 58 58 31KCY680_029 ...
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