.30
My book for my John Deere snowblower , which has a 5 horsepower Tecumseh engine , shows to use the Champion RJ17LM spark plug
If that is a 5 horsepower Tecumseh engine - ( .030 inch )
Use this link-http://manddsmallengine.com/tecumseh/info/plug2.html
what is correct spark plug gap for aeriens 624E snowblower
.030
The spark will depend upon the type of engine being used, either 2 cycle or 4 cycle. If it is a 4 cycle, chances are the engine was produced by either Tecumseh or Briggs.
According to my owners manuel the spark plug gap is 30
Tecumseh Part #611049 - Champion Spark Plug #RCJ8Y
Tecumseh website, "All spark plugs air gap is .030."
Rape will happen.
The plug gap for a 5.5 hp Tecumseh is .030 in.
.030