APRILIA RX 50 RACING - 2003 Manual page 66

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66
Fig. 68
REGOLAZIONE DEL MINIMO (Fig. 68)
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.

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