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Due to the catalytic reaction, the high tem-
perature reached by the exhaust gases
makes for the burning of the oil particles,
thus keeping the silencer clean and elimi-
nating the exhaust fumes.
To have the catalytic converter function
correctly and for long and to reduce possi-
ble problems regarding the soiling of the
thermal unit and of the exhaust, it is neces-
sary to avoid covering long distances with
the engine running at constantly low rpm.
It is sufficient to alternate these periods
with periods in which the engine runs at rel-
atively high rpm, even if only for a few sec-
onds, but rather frequently.
use and maintenance Mojito 50/125/150 - Mojito Custom 50/125/150
32
What has been stated above assumes par-
ticular importance for the cold starting of
the engine: in this case, in order to reach a
rpm regime sufficient to enable the ≈prim-
ing∆ of the catalytic reaction, just make
sure that the temperature of the thermal
unit has reached at least 50°C, which gen-
erally occurs a few seconds after starting
the engine.
!
CAUTION
Do not use leaded petrol, since it caus-
es the destruction of the catalytic con-
verter.
EXHAUST SILENCER
!
WARNING
Tampering with the noise control sys-
tem is prohibited.
Owners are warned that the law may pro-
hibit:
√ the removal or rendering inoperative by
any person, other than for purposes of
maintenance, repair or replacement, of
any device or element of design incorpo-
rated into any new vehicle √ for the pur-
pose of noise control √ prior to its sale or
delivery to the ultimate purchaser or
while it is in use; and
√ the use of the vehicle after such device
or element of design has been removed
or rendered inoperative by any person.
Check the exhaust silencer and the silenc-
er pipes, making sure that there are neither
signs of rust, nor holes and that the ex-
haust system works effectively.
If the noise produced by the exhaust sys-
tem increases, immediately contact your
aprilia Official Dealer.
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