Sym ALA125CC Manual page 163

SYM 8. V-BELT DRIVING SYSTEM/KICK STARTER ARM
Inspection
The operation of sliding pulley is means of
Weight roller
the weight roller to pressing on it with
centrifuge force. And then the speed is
changed by the title plate rotation. Thus, if
weight rollers are wear out or damage, the
centrifuge force will be effected.
Check if rollers are wear out or damage.
Replace it if necessary.
Measure each rollers' outer diameter.
Replace it if exceed the service limit.
Service limit: 19.50 mm
Sliding pulley
Check the pulley hub if damaged or wear out.
Replace it if necessary.
Measure the pulley hub's outer diameter.
Replace it if exceed the service limit.
Pulley hub
Service limit: 23.94 mm
Measure the pulley hub's inner diameter.
Replace it if exceed the service limit.
Service limit: 24.06 mm
Assembly/Installation
Weight roller
Install the weight rollers.
Guide boot
Install the title plate guide boot onto the title
plate.
Install the title plate.
Tilt plate
8-7