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According to my owners manuel the spark plug gap is 30
.030 in. or .076 mm gap
The correct spark plug for a 5 hp. Tecumsen 4-cycle motor is Champion J-8 (RJ17LM). The plug gap is 0.030 in. (0.76 mm)
Tecumseh website, "All spark plugs air gap is .030."
Tecumseh Part #611049 - Champion Spark Plug #RCJ8Y
My book for my John Deere snowblower , which has a 5 horsepower Tecumseh engine , shows to use the Champion RJ17LM spark plug
Call any auto or small engine repair shop they will have books on that info!
Set the spark plug gap to .030"(.762mm).
The plug gap for a 5.5 hp Tecumseh is .030 in.
.030
.30
Chanpion RJ19LM