Motorcycle Repair: 1975 Honda CB360T, air screw, stock jet

Question
Just rebuilt carbs. Is there a standard default on how to set the air screw? Shop manual only gives stock jet sizes, and something called a 'setting mark' of 745B. Supplement section for a CJ360 states air screw setting: 2 Not sure what those numbers mean.

Answer
Pete, Honda tune-up book shows 1 5/8 turns out on the idle mixture screws for that series carburetor set.

The "setting mark" is actually a series code for various calibrations for the carb sets. There were CB/CL and the CJ360 models, all of which had different exhaust systems requiring various calibration settings.

Bill Silver