VESPA LX 125 4T Euro 3, Service Station Manual, Page: 11 / 180

The system is fitted with a control valve that disa-
bles operation while decelerating to avoid unwan-
ted noise.
To ensure the best functioning of the SAS system
clean the filter as indicated in the scheduled main-
tenance table.
The filter sponge should be cleaned with water and
mild soap, then it should be dried with a cloth and
slight blows of compressed air.
Carburettor
125cc Version
Kehin
CARBURETTOR SETTING
Specification Desc./Quantity
Type CVEK26
Throttle valve diameter Ø 26.5
Diffuser diameter Ø 26.4
Setting stamping 270C
Maximum jet 82
Maximum air jet (on the body) 85
Tapered pin stamping NJHA
Throttle valve spring 130 ÷ 180 gr.
Minimum jet 42
Idle air jet (on the body) 150
Idle mixture adjustment screw initial opening 2 ½
Starter nozzle 35
Starter air jet (on the body) Ø 1.5
Starter pin travel 10 mm (at 24°)
Starter resistance 20 Ohm (at 24°)
150cc Version
Kehin
CARBURETTOR SETTING
Specification Desc./Quantity
Type CVEK26
Throttle valve diameter Ø 26.5
Diffuser diameter Ø 26.4
Setting stamping 271B
Maximum jet 80
Maximum air jet (on the body) MAJ 85
Maximum air jet (on the body) MAJ2 80
Tapered pin stamping NELA
Throttle valve spring 130 ÷ 180 gr.
Vespa LX 125 - 150 4T Euro 3
Characteristics
CHAR - 11