32
ADJUSTING THE IDLE (Fig. 30)
Adjust the idling every time it is irregular.
To carry out this operation, proceed as follows:
◆ Warm the engine up until it reaches the normal
running temperature.
◆ Set the gear in neutral position (neutral indicator
warning light “
” comes on).
◆ Position the vehicle on the stand.
◆ Connect an electronic revolution counter to the
spark plug cable.
◆ Act on the adjusting screw positioned on the car-
burettor.
By SCREWING IT (rotating it clockwise), you in-
crease the engine rpm.
By UNSCREWING IT (rotating it anticlockwise),
you decrease the engine rpm.
The minimum speed of the engine (idling) must be
about 1500 rpm.
◆ By twisting the throttle, accelerate and decelerate
a few times to verify the correct functioning and to
check if the idling speed is constant.
If necessary, contact your aprilia Official
Dealer.
Fig. 30
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