CAUTION
IF THE VEHICLE IS USED ON DUSTY ROADS IT IS NECESSARY TO CARRY OUT
MAINTENANCE CHECKS OF THE AIR FILTER MORE OFTEN TO AVOID DAM-
AGING THE ENGINE.
Recommended products
AGIP FILTER OIL
Special product for the treatment of foam filters.
-
03_18
Secondaryairsystem (03_18, 03_19)
In order to reduce polluting emissions, the vehicle is furnished with a catalytic con-
verter in the muffler.
To favour the catalytic process, an extra amount of oxygen is added to the exhaust
through a secondary air system (SAS).
This system allows more oxygen to be added to the unburned gas before it reaches
the converter, thus improving the action of the catalytic converter.
The air enters the head through an exhaust tube and is purified by 2 filters, one internal
"A" and one external "B".
The system is provided with a control valve that prevents its functioning while decel-
erating, to avoid unwanted noise.
To ensure the best functioning of the SAS system, every two years the scooter should
be taken to an authorised Piaggio service centre to have the filters cleaned (Sched-
uled maintenance section).
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