Ducati 749R, Owner'S Manual

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Exhaust Emission Control System
The Exhaust Emission Control System is composed of
lean carburetor settings, 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
California 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 throttle body and fuel tank.
Tampering warning
Tampering with Noise Control System Prohibited. Federal
Law prohibits the following acts or causing thereof:
(1) the removal or rendering inoperative by any person,
other than for purposes of maintenance, repair, or
replacement, of any device or element of design
incorporated into any new vehicle for the purpose of noise
control prior to its sale or delivery to the ultimate purchaser
or while it is in use; or
(2) the use of the vehicle after such device or element of
design has been removed or rendered inoperative by any
person.
Among those acts presumed to constitute tampering are
the acts listed below:
(1) Removal of, or puncturing the muffler, baffles, header
pipes or any other component which conducts exhaust
gases.
(2) Removal or puncturing of any part of the intake system.
(3) Lack of proper maintenance.
(4) Replacing any moving part of the vehicle, or parts of the
exhaust or intake system, with parts other than those
specified by the manufacturer.
This product should be checked for repair or replacement
if the motorcycle noise has increased significantly through
use. Otherwise, the owner may become subject to
penalties under state and local ordinances.
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 (driveability) and poor economy.