Heald VT-8 Spark plug?

[Sixpac440]

The one that's in there says MM1 on it .. looks like a champion base.
I can get my plug socket on it fine.

I tried a taller J8C (Champion) and its too tall to get the plug socket on.

What is the plug that belongs there?

Thanks
Kevin

 

[yankee-bears]

Champion J19LM is standard or 5861 Easy Start Champion . I like to use the NGK 4146 . All use a 13/16 socket . I have a craftsman 13/16 spark plug socket with a hex head on the top and use a 13/16 wrench on it . No room to use a ratchet . Hope this helps .

 

[yankee-bears]

13/16 socket takes a 3/4 wrench on the hex top part.