Vespa LX Series User Manual

Refitting the valves
- Lubricate the valve guides with engine oil.
- Place the lower caps of the valve spring on the
head.
- Use the punch to fit the 2 sealing rings one at a
time.
Specific tooling
020306Y Punch for assembling valve seal
rings
- Fit the valves, the springs and the spring retaining
caps. Using the appropriate tool with adapter 11,
compress the springs and insert the cotters in their
seats.
Specific tooling
020382Y Valve cotters equipped with part 012
removal tool
020382Y011 adapter for valve removal tool
Inspecting the cam shaft
- Inspect the cam shaft for signs of abnormal wear
on the cams.
Characteristic
Standard diameter Bearing A
Ø: 32.5 mm -0.025 -0.050 mm
Standard diameter Bearing B
20 -0.020 -0.041 mm
Minimum admitted diameter bearing A
Ø: 32.440 mm
Minimum admitted diameter bearing B
Ø: 19.950 mm
Inlet cam height
27.512 mm
Outlet cam height
27.212 mm
Engine Vespa LX 125 - 150 i.e.
ENG - 124

Vespa LX Series Specifications

General

Displacement	124 cc
Cooling System	Air-cooled
Front Tire	110/70 - 11"
Rear Tire	120/70 - 10"
Seat Height	785 mm
Kerb Weight	114 kg
Wheelbase	1, 280 mm
Length	1, 770 mm
Width	705 mm
Height	1, 140 mm
Engine Type	Single-cylinder, 4-stroke
Fuel System	Carburetor
Max Torque	10.4 Nm @ 6, 000 rpm
Transmission	Automatic
Front Suspension	Single-sided trailing arm with hydraulic shock absorber
Rear Suspension	Hydraulic shock absorber
Front Brake	200mm disc brake
Rear Brake	110mm drum brake