Wheels and tyres
WHEELS AND TYRES
Specification Desc./Quantity
Front wheel rim Die-cast aluminium alloy; 3.50 x 12"
Front tyre Tubeless 120/70-12"
Rear wheel rim Die-cast aluminium alloy: 3.00"x12"
Rear tyre Tubeless 120/70 - 12"
Front tyre pressure 1.8 bar
Rear tyre pressure 2 bar
Rear wheel pressure (rider and passenger): 2.3 bar
Secondary air
In order to reduce polluting emissions, the vehicle
is furnished with a catalytic converter in the muf-
fler.
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 con-
verter, 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 disa-
bles operation while decelerating to avoid unwan-
ted noise.
To ensure the best functioning of the SAS system,
every 12,000 km the scooter should be taken to an
Authorised Piaggio Service Centre to have the
filter cleaned (Scheduled maintenance operations
section).
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.
CAUTION
Fly 125 - 150 4T Characteristics
CHAR - 11
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