Spark Plug Gap

I just got what I think is a TE-20. It could be a TO-20 or a TO-30. Can you tell me the spark gap? August 16, 2014.

I don’t know what you have but I’m sending you a link that should help you identify your tractor. Assuming you have a TE-20 with a Continental Z120 engine with 18mm spark plugs, the gap should be .025″? The Z129 was used in the TO-30 but you could put it in a TO or TE-20. The spark plug gap is the same.