PIAGGIO Vespa LX 150 4T Euro 3 Service Station Manual page 91

Vespa LX 125 - 150 4T Euro 3
Inspecting the clutch
- Check the thickness of the clutch mass friction
material.
- The masses must not show traces of lubricants;
otherwise, check the driven pulley unit seals.
N.B.
UPON RUNNING-IN, THE MASSES MUST EX-
HIBIT A CENTRAL CONTACT SURFACE AND
MUST NOT BE DIFFERENT FROM ONE AN-
OTHER.
VARIOUS CONDITIONS CAN CAUSE THE
CLUTCH TO TEAR.
CAUTION
DO NOT OPEN THE MASSES USING TOOLS
TO PREVENT A VARIATION IN THE RETURN
SPRING LOAD.
Characteristic
Check minimum thickness
1 mm
Pin retaining collar
- Remove the collar with the aid of 2 screwdrivers.
- Remove the 3 guide pins and the movable half-
pulley.
Removing the driven half-pulley bearing
- Remove the retaining ring using two flat blade
screwdrivers.
- Using a hammer and pin, knock the ball bearing
out as shown in the figure.
- Remove the roller bearing using the specific ex-
tractor.
N.B.
REST THE HALF-PULLEY ON A WOOD SUR-
FACE TO AVOID DAMAGING THE THREADED
Engine
ENG - 7