Sym GTS 250 Service Manual page 104

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8. V-Belt Driving System
Clutch lining
Clutch lining
Measure each clutch weight thickness. Replace
it if exceeds service limit.
Service limit: 3.0 mm
Clutch weight
Driven pulley spring
Measure the length of driven pulley spring.
Replace it if exceeds service limit.
Service limit: 97.400 mm
Free length
Driven pulley
Check following items:
 If both surfaces are damaged or worn.
Driven face
 If guide pin groove is damaged or worn.
Replace damaged or worn components.
Measure the outer diameter of driven face and the
inner diameter of movable driven face. Replace it
if exceeds service limit.
Service limit: Outer diameter 40.93 mm
Inner diameter 41.07 mm
Guide pin groove
Movable driven face
Driven Pulley Bearing Inspection
Check if the inner bearing oil seal is damage.
Replace it if necessary.
Check if needle bearing is damage or too big
clearance. Replace it if necessary.
Rotate the inside of inner bearing with fingers to
check if the bearing rotation is in smooth and silent.
Needle bearing
Check if the bearing outer parts are closed and
fixed. Replace it if necessary.
Outer ball bearing
8-11