Silencer - APRILIA MX 125 Manual De Instrucciones

SILENCER

WARNING
Do not park the vehicle close to dry
underbrush or within children's reach
as the catalytic muffler reaches very
high temperatures during use. Take
thus special care and avoid any kind of
contact before it has completely cooled
down.
use and maintenance MX 125
46
The vehicle is equipped with a silencer with
ìbivalent rhodium-platinumî metal catalytic
muffler.
This device provides for the oxidation of
the CO (carbon monoxide) and of the HC
(unburned hydrocarbons) contained in the
exhaust gases, changing them into carbon
dioxide and steam, respectively.
Due to the catalytic reaction, the high
temperature reached by the exhaust gases
makes for the burning of the oil particles,
thus keeping the silencer clean and
eliminating the exhaust fumes.
To have the catalytic converter function
correctly and for long and to reduce
possible problems regarding the soiling of
the thermal unit and of the exhaust, it is
necessary 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
relatively high rpm, even if only for a few
seconds, but rather frequently.
What has been stated above assumes
particular importance for the cold starting
of the engine: in this case, in order to reach
a rpm regime sufficient to enable the
≈priming∆ of the catalytic reaction, just
make sure that the temperature of the
thermal unit has reached at least 50°C,
which generally occurs a few seconds after
starting the engine.
WARNING
Do not use leaded petrol, since it
causes the destruction of the catalytic
converter.