Beta 2008 URBAN 125cc Service Manual page 108

1
AIS VALVE
It is called AIS valve and is an air inflow
system that completes the combustion of
that part of un-burnt hydrocarbons that
are the by-product of the thermodynamic
cycle.
To have access to the valve A, remove
the right guard under the tank, as
A
described on page 52
GB
34