APRILIA RS 50 - 1999 Manual page 6

Tampering with the noise control system is
prohibited. Federal law prohibits the fol-
lowing acts or causing thereof:
a) The removal or rendering inoperative by
any person other than for purposes of
maintenance, repair, or replacement, of
any device or element of design incor-
porated into any new motorcycle for the
purpose of noise control prior to its sale
or delivery to the ultimate purchaser or
while it is in use, or
b) The use of the motorcycle 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:
a) Removal of, or puncturing the muffler,
baffles, header pipes or any other com-
ponent which conducts exhaust gases.
b) Removal or puncturing of any part of
the intake system.
c) Lack of proper maintenance.
d) Replacing any moving part of the motor-
cycle, or parts of the exhaust or intake
system, with parts other than those
specified by the manufacturer.
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6 use and maintenance RS 50
 
CAUTION
This product should be checked for re-
pair or replacement if the motorcycle
no i se h as i nc rea se d si gn ifi ca ntl y
through use. Otherwise, the owner may
become subject to penalties under state
and local ordinances.
PROBLEMS THAT MAY AFFECT
THE MOTORCYCLE EMISSIONS
If any of the following symptoms are ob-
served, immediately have your motorcycle
inspected and repaired by your Local
aprilia Dealer.
Symptoms:
– Difficult starting or stalling after starting.
– Irregular idle.
– Misfiring or backfiring during accelera-
tion.
– After-burning (backfiring).
– Poor engine performance, degraded
handling, or poor fuel economy.