To work efficiently,
the clutch needs the right amount of play in the linkage between the foot pedal and the clutch operating lever (also known as the release arm or fork).
Anything less than the correct amount o free play (or clearance) will result in clutch slip, because the pressure plate will be unable to exert its full pressure on the friction plate.
Failure to cure this fault will quickly lead to a burned-out friction plate, and possibly a ruined pressure plate.
If, however, there is too much clearance in the clutch linkage, the car tends to creep forwards when in gear with the clutch pedal fully depressed.
This is known as clutch drag, and it can cause difficulties in heavy traffic.
It is generally better, however to have too much play in the clutch linkage than too little.
Adjusting the clutch
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