Yeah that is what I was expecting. What my f100 has.do not know if its the correct model but zenith is very common them
Jim where would the tag be located on it? There are three adjustments on it. What does each one do? Should I keep this or should I put a correct Zenith on it?The Zenith on your picture has an adjustable main jet, which implies a distillate engine. They weren't making a lot of distillate engines by the time the 200 came along. It suggests to me the carburetor has been swapped out. Is there a number tag on it? That is the only way to know what it is.
There is a T handle in the back towards the motor that if you open it, fuel drains out. What is that?Usually a tag (often aluminum and round) is riveted to the top part. A gasoline carb usually has 2 adjustment screws. The idle speed is at the shaft for the butterfly, hidden in your picture. The other is the idle mixture screw, the flat-blade screw angled in from the front, upper one in your picture. A distillate carb has a third screw to adjust mixture at the main jet. It is the lower one with the T handle in your picture.
That is the drain. Gasoline carbs usually have a pipe plug, distillate have a drain valve with a T handle (like many old cooling system drains.There is a T handle in the back towards the motor that if you open it, fuel drains out. What is that?