Rave Valve - APRILIA SX 125 Service Station Manual

Chassis
•
Undo and remove the two fixing nuts of
the manifold and collect bracket and
washer.
•
Slide off the muffler forwards.
CAUTION
WHEN REFITTING, REPLACE THE EXHAUST GASKET AND CHECK THE CORRECT POSITION-
ING OF THE FIXING BRACKETS.

Rave valve

The exhaust valve is operated by a solenoid through a flexible cable.
The solenoid is enabled within a given range of the electric control unit that receives the engine rotation
signal from the primary circuit frequency.
CAUTION
FITTING THE EXHAUST VALVE ON 11 KW HOMOLOGATED VEHICLES RENDERS SUCH CER-
TIFICATION INVALID. IT CAN ONLY BE USED FOR RACING OR ON RACETRACKS AND CIR-
CUITS NOT OPEN TO THE PUBLIC.
RAVE operation
•
The exhaust valve opens between 500 and 2500 rpm for the valve stem self-cleaning.
•
It closes between 2500 rpm and the actuation point (about 8000 rpm).
•
It remains open beyond the actuation point.
RAVE valve actuation points
8000 rpm
CHAS - 186
RX SX 125