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I'm having trouble finding the correct spark plug for my 9.5 horsepower Tecumseh snow King. The one that's currently installed has a thread length of 3/4 of an inch Aunt. Everything else I could find says it should be only half inch

I’m finding that your engine uses a Champion RN4C, which has a 3/4” reach.

Prefixes
CHA = Champion
STE = Stens
B1 = A&I
TEC = Tecumseh

StarTech said:

View attachment 70329
View attachment 70331

Prefixes
CHA = Champion
STE = Stens
B1 = A&I
TEC = Tecumseh

Click to expand...

Thanks. The one that is in it now is wrong, I'll get a new one.

Rivets said:

I’m finding that your engine uses a Champion RN4C, which has a 3/4” reach.

Click to expand...

Thanks, I'll order one.