Do you know of any adjustments in the linkage. I know the system is hydraulic but there is linkage between the pedal and master cylinder and between the slave cylinder and the fork. The slave cylinder linkage does not apply if the cylinder is inside the bell housing and has the throwout bearing connected directly to it. Look for any adjustable linkages associated with the clutch release system. What are you working on? If you don't have a manual, it would certainly help. Has the car been wrecked? I suppose that it is possible that if the car was wrecked, the linkage between the master cylinder and the pedal could have been "adjusted". I wouldn't think that would be likely though. Get a manual and look for some adjustments. For some reason, you have too much free play. A manual should have the specification on that as well.
Also make sure that the entire hydraulic system is bled completely. Start at the master cylinder and work your way, bleeding at every junction, to the slave cylinder. Good Luck