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farmboy1_gw

Spark Plug Gap, Briggs 407777, Type 0121-E1 C

13 years ago

I'm wondering what is the correct spark plug gap for Champion RC12YC when used in the above engine? It currently has RC12YCs in it, but their age is uncertain and I'd like to gap the replacements correctly.

The Craftsman Owner's Manual doesn't list a gap in it.

Thanks,

vince

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