Clutch Weight; Driven Pulley Spring; Driven Pulley; Driven Pulley Bearing Inspection - Sym JET 4 R 50 Series Service Manual

Clutch weight

Measure each clutch weight thickness. Replace
it if exceeds service limit.

Driven pulley spring

Measure the length of driven pulley spring.
Replace it if exceeds service limit.

Driven pulley

Check following items:
If both surfaces are damage or wear.
If guide pin groove is damage or wear.
Replace damaged or worn components.
Measure the outer diameter of driven pulley and
the inner diameter of sliding pulley. Replace it if
exceeds service limit.

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. Check if the bearing outer parts are closed
and fixed. Replace it if necessary.
Caution
Some of models are equipped with two ball
bearings.
8. "V" Type Belt Drive System/Kick-Starter
Clutch weight
Free length
Driven pulley
Sliding pulley
Outer ball bearing
Guide pin groove
Needle bearing
8-11