Vespa LX Series User Manual

- Refit the spacer on the cam shaft.
- Rotate the engine so that the piston is at top dead
centre, using the reference marks on the flywheel
and the crankcase.
- While doing so, fit the chain onto the control cam-
shaft pulley and keep the reference 2V in corre-
spondence with the reference mark on the head.
- Fit the pulley onto the camshaft.
- Assemble the counterweight with the corre-
sponding fixing screw and tighten to the specified
torque.
Locking torques (N*m)
Locking torque 7 to 8.5
-Fit the end-stop ring on the automatic valve-lifter
cam and fit the automatic valve-lifter cam to the
cam shaft.
- Fit the automatic valve-lifter return spring.
- During this operation the spring must be loaded
approximately 180°.
N.B.
GREASE THE END STOP RING TO PREVENT IT COMING
OUT AND FALLING INTO THE ENGINE.
- Fit the automatic valve-lifter retaining dish, using
the counterweight screw fastener as a reference.
- Tighten the clamping screw to the prescribed tor-
que.
Locking torques (N*m)
Locking torque 12 to 14
- Set the tensioner cursor in the rest position.
- Fit the chain tensioner on the cylinder, using a new gasket, and tight the two screws to the prescribed
torque.
Vespa LX 125 - 150 i.e. Engine
ENG - 127

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