Vespa LXV 125 User Manual

- Remove the central screw and the tensioner
spring. Check that the one-way mechanism is not
worn.
- Check the condition of the tensioner spring.
- If examples of wear are found, replace the whole
assembly.
Inspecting the valve sealings
- Measure the width of the sealing surface on the valve seats.
VALVE SEAL SURFACE
Specification Desc./Quantity
Inlet valve - seal surface 2.4 ÷ 2.8 mm
Outlet valve - seal surface 2.2 ÷ 2.6 mm
Inspecting the valve housings
- Remove any carbon formation from the valve guides.
- Measure the inside diameter of each valve guide.
- Take the measurement at three different heights in the rocker arm push direction.
Characteristic
Standard drainage guide diameter
5.012 mm
Standard inlet guide diameter
5.012 mm
Engine LXV 125
ENG - 106

Vespa LXV 125 Specifications

General

Engine Type	Single-cylinder, 4-stroke
Displacement	124 cc
Cooling System	Air-cooled
Fuel System	Carburetor
Seat Height	785 mm
Max Torque	9.6 Nm at 6, 000 rpm
Length	1, 770 mm
Front Brake	200 mm disc brake
Rear Brake	110 mm drum brake
Weight	114 kg
Top Speed	91 km/h
Transmission	Automatic CVT
Rear Suspension	Coil spring and hydraulic shock absorber