What happens to pedal free play as friction disc wear occurs?

As the friction disc wears, the thickness of the disc decreases. This reduction leads to a change in how the clutch pedal engages and disengages. As the disc wears down, the clutch’s ability to fully engage and disengage without additional pedal travel is compromised, causing the pedal free play to increase.

In essence, with wear, there is a greater distance the pedal can travel without affecting the clutch's engagement. This increase in free play necessitates adjustments to the clutch linkage to maintain proper functioning. Therefore, the correct understanding is that increased wear leads to an increase in pedal free play, requiring attention to ensure that the clutch system operates effectively.