How do you adjust the clutch brake on an 18 speed fuller transmission?

press clutch pedal all the way, press lock on adjusting srew and turn clockwise until there is a 1/2 inch gap between bearing and clutch brake or about the width of your finger tip now with clutch pedal released lenghten or shortend linkage until there is a 1/8 gap between release fork and bearing. you should now have 1 1/2 to 2 inches of free travel and cluch brake should be about an inch from the floor board