PIAGGIO Vespa LX 150 4T Euro 3 Service Station Manual page 157

Vespa LX 125 - 150 4T Euro 3
Engine
- Using the rpm indicator of the analyser or an in-
dependent one (020332y), adjust the idle set
screw until 1600 ÷ 1700 rpm is obtained.
N.B.
THE WASTED SPARK IGNITION SYSTEM OF-
FERS REMARKABLE POWER. READINGS
MAY NOT BE ACCURATE IF INADEQUATE
RPM INDICATORS ARE USED. CORRECT
COUPLING OF THE RPM INDICATOR WILL BE
INDICATED WHEN IT CAN READ RPM OVER
6000 ÷ 8000
ENG - 73