how do you adjust the clutch where is the bleed valve or screw on 1993 GMC Sonoma

it doesnt happen a lot i forgot to check the fluid

Asked by for the 1993 GMC Sonoma
1 answer
Bleeder is on the slave cyl. under truck at trans. Takes an allen wrench (i think) to turn it. It dont look like the bleeder screw on a brake system. Not adjustable!