Tecumseh provides dealers with a 0.012" air gap guage, but 0.010 - 0.014" will do.
The tech website says that all plugs on tecumsah engines is .030
No way of knowing without much more info.
Tecumseh website, "All spark plugs air gap is .030."
The plug gap for a 5.5 hp Tecumseh is .030 in.
I have used a Champion RJ19LM or J19LM, both work fine.
.030 in. or .076 mm gap
.30
This is a Tecumseh engine. According to the Tecumseh web site all small engines have a 0.030 gap
Set the spark plug gap to .030"(.762mm).
.030 inch ( on my 24 year old 5.0 horsepower Tecumseh engine )
.030"