On mine, there is a spring that goes from the clutch fork end to a fixed metal bar near the steering gear. All it does, I think, is to prevent the adjustment rod from falling out of the clutch fork. The heavy spring under the dash is what returns the clutch pedal to the top of its travel. There is no spring (on mine) attached to the z-bar.










Underneath all that gunk is a clutch fork. (And no comments from the peanut gallery about all that gunk. I just figure it as cheap preservative until I get around to it. )



These are pictures of the clutch pedal return spring.