APRILIA SX 125 Service Station Manual page 191

RX SX 125
•
Connect the connector of the control
unit to the system.
•
Connect the flexible cable (3) to the
stem valve housing (4).
•
Rotate the stem valve housing (4) by
180°.
CAUTION
THE CABLE CONNECTION SHOULD BE FACING DOWN-
WARDS..
•
Refit the protection casing.
•
Insert the exhaust valve unit with the gasket (5) in the cylinder.
CAUTION
REPLACE THE GASKET (5) AT EVERY REFITTING OPERATION.
•
Tighten the two exhaust valve unit screws (1) with their washers.
CAUTION
AFTER FITTING THE EXHAUST VALVE UNIT, CHECK:
- With the valve fully open, the valve stem end
should be at the same level with the exhaust port.
To do so, it is necessary to remove the exhaust
flange.
- make sure that the exhaust valve moves freely.
Chassis
CHAS - 191