The only adjustment required in a clutch is of the free pedal play, which is necessitated on account of wear of the friction linking due to continuous use, or with the wear of the throwout bearing carbon ring due to the habit of the driver to rest his foot always on the clutch pedal. The wear of the friction lining decreases the free pedal play, whereas the wear of the carbon ring causes the same to increase. If the free pedal play is less, the clutch cannot engage fully, whereas excessive free pedal play restrict the complete disengagement of the clutch.

The procedure of adjustment and the amount of free pedal play varies, depending upon the make for which the concerned manual can be referred. For example, in case of Hindustan Ambassador car, an adjusting nut is provided at the lower end of the clutch lever. You have to slacken the lock nut first, make the desired adjustment with the existing nut and retighten the lock nut. The free pedal play in this position should be 31 mm. Figure shows the method of freeplay adjustment in a Tata 1210E vehicle. This is done by changing the length of linkage between the clutch pedal and the clutch release fork. Lock nut is loosened, the split pin is removed and the yoke is disconnected. Then it is rotated as much as is necessary so that the desired free pedal play is obtained, after which the lock nut is tightened and the split pin is reset. In Tata vehicles, the freeplay is between 30 and 35 mm.