APRILIA SR 125 - 1999, Manual

Page: 63 / 98

63 use and maintenance SR 50 - SR 125 - SR 150
• +
)$,).' !$*534-%.4
Carefully read p. 43 (MAINTENANCE).
Adjust the idling after the first 1000 km
(625 mi) and every time it is irregular.
To carry out this operation, proceed as fol-
lows:
◆
Drive for a few miles until the engine
reaches the normal running temperature,
then stop the engine.
◆
Remove the battery/tool kit compartment
cover, see p. 24 (BATTERY / TOOL KIT
COMPARTMENT).
◆
Remove the tool kit compartment.
◆
Connect an electronic revolution counter
to the spark plug cable.
a
WARNING
Before proceeding, make sure that the
room in which you are working is prop-
erly ventilated.
◆
Start the engine.
The minimum speed of the engine (idling)
must be about 1500
±
100 rpm; in this case
the engine does not make the rear wheel
rotate.
If necessary:
NOTE
The vehicle can be equipped with
two different carburettor models. For the
positioning of the adjuster, see the figure.
◆
Act on the adjusting screw (1) positioned
on the carburettor.
By SCREWING IT (clockwise), you in-
crease the engine rpm.
By UNSCREWING IT (anticlockwise), you
decrease the engine rpm.
◆
Twist the throttle grip, accelerating and
decelerating a few times to make sure
that it functions correctly and to check if
the idling speed is constant.
NOTE
If necessary, contact your aprilia
Official Dealer.
!$*534).'
4(% !##%,%2!4/2 #/.42/,
Carefully read p. 43 (MAINTENANCE).
The ideal slack of the accelerator control
should be about 2-3 mm.
To adjust the slack, proceed as follows:
◆
Position the vehicle on the centre stand.
◆
Remove the protection element (2).
◆
Loosen the nut (3).
◆
Act on the adjuster (4), positioned at the
beginning of the accelerator control ca-
ble.
After the adjustment:
◆
Tighten the nut (3), thus locking the ad-
juster (4) and put back the protection ele-
ment (2).
a
WARNING
After the adjustment, make sure that the
rotation of the handlebar does not mod-
ify the engine idling rpm and that the
throttle grip returns smoothly and auto-
matically to its original position after
being released.