Exhaust Emission Control System - APRILIA PEGASO 650 IE - PART1 11-1999 Manual

Before starting the engine, carefully read
this manual and in particular the chapters
"WARNINGS - PRECAUTIONS - GENER-
AL ADVICE" and "SAFE DRIVE" see p. 17.
Your safety and that of those around you
depends not only on your skill as a rider,
but also your knowledge about your vehi-
cle and about riding safely. Therefore it is
essential that you not operate your vehicle
on public streets or highways until you
have received instructions from a qualified
safety organization such as the Motorcycle
Safety Foundation, and are properly
trained and licensed.
If you believe that your vehicle has a defect
which could cause a crash or could cause
injury or death, you should immediately in-
form the National Highway Traffic Safety
Administration (NHTSA) in addition to no-
tifying aprilia. If NHTSA receives similar
complaints, it may open an investigation,
and if it finds that a safety defect exists in a
group of vehicles, it may order a recall and
remedy campaign. However, NHTSA can-
not become involved in individual problems
between you, your dealer, or aprilia. To
contact NHTSA, you may either call the
Auto Safety Hotline toll free at 1-800-424-
9393 (or 366-0123 in the Washington, D.C.
area) or write to: NHTSA, U.S. Depart-
ment of Transportation, Washington, D.C.
20590.
You can also obtain other information about
motor vehicle safety from the Hotline.
Rules of the road vary from country to coun-
try. It is essential that you understand in ad-
vance the rules of the road of the country in
which your vehicle will be used.

WARNING
This motorcycle has been designed and
produced for use on paved roads, and
for smooth graded dirt roads and trails. It
is not designed for off road competition,
or for cross country riding. Do not use
this motorcycle on rough or unimproved
surfaces, or in other off road areas. Fail-
ure to heed this warning could lead to an
upset with subsequent injury or even
death.

WARNING
If the bike is to be used off-road, on pub-
lic land, it is the owner's responsibility to
install a spark arrester approved by the
US Forest Service for this engine dis-
placement or larger.
aprilia s.p.a. warrants that this exhaust
system, at the time of sale, meets all appli-
cable U.S. EPA Federal noise standards.
This warranty extends to the first person
who buys this exhaust system for purpos-
es other than resale, and to all subse-
quent buyers.
Warranty claims should be directed to:
aprilia USA Inc.
110 Londonderry Court, Suite 130
Woodstock, GA 30188
USA
Tel 770 592 2261
Fax 770 592 4878
ORIGIN OF THE EMISSIONS
The combustion process produces carbon
monoxide and hydrocarbons. The control
of hydrocarbons is very important, because
under certain conditions they react to ex-
posure to sunlight and produce photo-
chemical smog.
Carbon monoxide does not react in the
same way, but it is toxic and poisonous.
aprilia utilizes "lean" carburetor settings
and other systems to reduce the produc-
tion of carbon monoxide and hydrocar-
bons.
EXHAUST EMISSION
CONTROL SYSTEM
The Exhaust Emission Control System re-
quires "lean" carburetor settings and no
adjustments should be made, except idle
speed adjustments by means of the appro-
priate screw.
use and maintenance Pegaso 650
5