1. Adjust the clutch cable. If the cable is too loose or too tight, it can cause the clutch to slip, which can produce a squealing noise. To adjust the cable, follow these steps:
a. Loosen the locknut on the clutch cable adjuster.
b. Turn the adjuster in or out until the clutch lever has about 1/8 to 1/4 inch of free play.
c. Tighten the locknut and check the clutch lever free play again.
2. Lubricate the clutch cable. If the cable is dry, it can also cause the clutch to slip and squeal. To lubricate the cable, follow these steps:
a. Remove the clutch cable from the scooter.
b. Apply a thin coat of grease or oil to the entire length of the cable.
c. Reinstall the clutch cable.
3. Replace the clutch friction plates. If the friction plates are worn out, they can also cause the clutch to slip and squeal. To replace the friction plates, follow these steps:
a. Remove the clutch assembly from the scooter.
b. Remove the old friction plates from the clutch assembly.
c. Install the new friction plates according to the manufacturer's instructions.
d. Reinstall the clutch assembly and check the clutch operation.
4. Inspect the clutch basket. If the clutch basket is damaged or worn out, it can also cause the clutch to squeal. If the clutch basket is damaged, it will need to be replaced.
