I did this recently. There is a bleed screw on the end of the slave that looks like the caliper screw. Connect everything together and pump the clutch pedal a few times then hold it to the floor. Have a partner release the screw. Fluid or air will come out.
Close the screw and pull up on the clutch pedal with your foot. It will not come up on its own. This draws in the fluid from the resevoir. Pump again 5 times or so and repeat. Keep an eye on the fluid level while you do this.
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