What is the actual amount of oil that goes into a flattop carb? I didn't see any specs in the manual other than type of oil(20w). Maybe I missed it somewhere. Thanks, Victor.

It won't hurt if you fill to the top. Any excess will just slip into the tube and into the chamber and get burnt.

Accoding to my 71 FSM the total oil volume is 3cc or .18 cu in.

Or just fill it to the upper line.....

Thanks, Victor.