Vespa LX 2012 User Manual

- Measure the diameter of the valve stems in the
three positions indicated in the diagram.
STANDARD DIAMETER
Specification Desc./Quantity
Intake: 4.030 to 4.015 mm
Exhaust: 4.975 to 4.960 mm
- Calculate the clearance between valve and valve guide.
- Check the deviation of the valve stem by resting
it on a «V» shaped support and measuring the ex-
tent of the deformation using a dial gauge.
Characteristic
Limit values admitted:
0.02 mm
- Check the oscillation of the valve head by ar-
ranging a dial gauge at right angle relative to the
valve head and rotate it on a "V" shaped abutment.
Characteristic
Admissible limit:
0.3 mm
Measure the valve guide.
Characteristic
Valve guide:
4.3 ± 0.1 mm
Characteristics Vespa LX - S 125 3V ie 150 3V ie (2012)
CHAR - 22

Vespa LX 2012 Specifications

General

Engine Type	Single-cylinder, 4-stroke
Displacement	124 cc
Cooling System	Air-cooled
Fuel System	Carburetor
Transmission	Automatic CVT
Fuel Tank Capacity	8.6 liters
Seat Height	785 mm
Curb Weight	114 kg
Length	1, 770 mm
Width	705 mm
Height	1, 140 mm
Max Power	10.3 hp @ 7, 750 rpm
Front Suspension	Single arm with coil spring and hydraulic shock absorber
Front Brake	200 mm
Rear Suspension	Coil spring and hydraulic shock absorber
Rear Brake	110 mm drum