Ducati Hypermotard, Owner'S Manual

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Noise and exhaust emission control
system information
Source of Emissions
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 is toxic. Ducati utilizes lean carburetor settings
and other systems to reduce carbon monoxide and
hydrocarbons.
Exhaust Emission Control System
Exhaust Emission Control System is controlled by an
Electronic Control Unit (ECU), and no adjustments
should be made except idle speed adjustments 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 the
throttle body.
Evaporative Emission Control System
The motorcycles are equipped with an evaporative
emission control system which consists of a charcoal
canister and associated piping. This system prevents
the escape of fuel vapors from the engine and fuel
tank.
Problems that may affect motorcycle
emissions
If you are aware of any of the following symptoms,
have the vehicle inspected and repaired by your local
Ducati dealer.
Symptoms:
Hard starting or stalling after starting.
Rough idle.
Misfiring or backfiring during acceleration.
After-burning (backfiring).
Poor performance (drivability) and poor economy.
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