020263Y Driven pulley assembly sheath
Recommended products
AGIP GREASE SM 2 Grease for the C-ring of
the tone wheel
Soap-based lithium grease containing NLGI 2 Mo-
lybdenum disulphide; ISO-L-XBCHB2, DIN
KF2K-20
Inspecting the clutch spring
- Measure the length of the spring when it is re-
laxed.
Characteristic
Standard length:
106 mm
Acceptable limit after use
102.5 mm (4.035 in)
Refitting 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.
N.B.
UPON RUNNING-IN, THE MASSES MUST EXHIBIT A CEN-
TRAL CONTACT SURFACE AND MUST NOT BE DIFFER-
ENT FROM ONE ANOTHER. VARIOUS CONDITIONS CAN
CAUSE THE CLUTCH TO TEAR.
CAUTION
DO NOT OPEN THE MASSES USING TOOLS SO AS TO
PREVENT A VARIATION IN THE RETURN SPRING LOAD.
Characteristic
Minimum thickness permitted:
1 mm
Vespa LX 125 - 150 i.e. Engine
ENG - 99
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