Anyone has a pdf manual or can give me a starting point on the two big screws how many turns? I'm assuming they are air bleed screws. This is for a 83 12a streetport. Any info would be great

 

the two big screws are fuel idel adjust screws, set the idel at aprox. 2000 then turn the 2 screws clockwise until the engine wants to die, starting with the rear rotor back the screw out until idel is semi-smooth then the front till smooth as possible, then readjust idle to 800 or so. you might have to run through the process a coupple of times.