Autolite lists it as 2976 or SE2976DPT. I haven't installed the plug yet so I can verify.
Remove the two screws that attach the panel that the key is located on. The plug will be in the upper lh corner.
what is correct spark plug gap for aeriens 624E snowblower
.030
.30
Rape will happen.
Champion 5843
If that is a 5 horsepower Tecumseh engine - ( .030 inch )
My book for my John Deere snowblower , which has a 5 horsepower Tecumseh engine , shows to use the Champion RJ17LM spark plug
You will need a Champion RJ18YC/130-435 spark plug. Gap it to .30. You can buy them here: http://www.jsesc.com/
The most common problems would be a weak or no spark OR old bad gas.
Use this link-http://manddsmallengine.com/tecumseh/info/plug2.html
Champion RJ19LM. Just remeoved it from my snowblower. Measured gap as .030"