Do you have hydraulic or cable operation of the clutch? One pushes the fork back, the other (cable type) pulls it forward so that the design of the fork and the position of the fulcrum pin are different. On the cable type the fulcrum is on the opposite side of the release bearing to the operating rod hole. There is a spring clip on the arm which fits into a slot in the fulcrum pin. You might manage to replace the hydraulic type fulcrum pin through the fork slot in the bell housing but you could lose a finger or two in the process. I don't think either clutch fork can be replaced without removing the transmission.
Regards
Thomas Mann