Idling Adjustment; Adjusting The Throttle Control - APRILIA QUASAR 125 2003 Workshop Manual

QUASAR 125-180
2.8

IDLING ADJUSTMENT

Read carefully 1.3 (GENERAL SAFETY RULES).
Adjust the idling every time it is irregular.
To carry out this operation, proceed as follows:
"
Ride the motorcycle for a few kilometres to allow it to warm up, then adjust
the screw (1) from the front of the vehicle.
"
BY SCREWING IT IN (clockwise), you increase the rpm;
"
BY UNSCREWING IT (anticlockwise), you decrease the rpm.
"
With the brakes engaged, accelerate and decelerate a few times to check
the operation of the throttle and to check if the idling speed is constant.
2.9

ADJUSTING THE THROTTLE CONTROL

NOTE
Perform the maintenance operations more frequently if the vehicle is
used in rainy or dusty areas, on uneven surfaces or on racetracks.
The idle stroke of the throttle lever must be 2-6 mm.
If not, proceed as follows:
"
Withdraw the protection elements (1).
"
Slacken the locknut (2).
"
Rotate the adjuster (3) in such a way as to restore the prescribed value.
"
After the adjustment, tighten the lock nut (2) and check the idle stroke again.
"
Refit the protection elements (1).
After the adjustment, make sure that the rotation of the handlebar does
not modify the engine idling rpm and that the throttle lever returns
smoothly and automatically to its original position after being released.
If necessary, turn the carburettor adjuster:
"
Loosen locking nut (4).
"
Turn nut (5) to adjust.
"
Tighten nut (4).
Release 00/2003 - 09
PERIODIC MAINTENANCE
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