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_14
Secondary air system (03_14)
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 via a secondary
air system (SAS).
This system allows more oxygen to be added to the unburned gases before they reach
the converter, thus improving the action of the catalytic converter.
The air enters the exhaust duct from the head, and is purified by a black filter.
The system is fitted with a control valve that disables operation while decelerating to
avoid unwanted noise.
To ensure the best functioning of the SAS system, the scooter should be taken to an
Authorised Service Centre
to have the filter cleaned as indicated in the Scheduled
Maintenance Table.
The filter sponge should be cleaned with water and mild soap, then it should be dried
with a cloth and slight blows of compressed air.
42
3 Maintenance
Summary of Contents for S 150 2008
Page 4: ...4 ...
Page 7: ...Vespa S 150 Chap 01 Vehicle 7 ...
Page 8: ...01_01 8 1 Vehicle ...
Page 10: ...01_02 10 1 Vehicle ...
Page 19: ...Vespa S 150 Chap 02 Use 19 ...
Page 31: ...31 2 Use ...
Page 32: ...32 2 Use ...
Page 33: ...Vespa S 150 Chap 03 Maintenance 33 ...
Page 66: ...66 3 Maintenance ...
Page 67: ...Vespa S 150 Chap 04 Technical data 67 ...
Page 68: ...04_01 68 4 Technical data ...
Page 73: ...Vespa S 150 Chap 05 Spare parts and accessories 73 ...
Page 75: ...Vespa S 150 Chap 06 Scheduled maintenance 75 ...
Page 80: ...80 6 Scheduled maintenance ...