When an OEM says to use a certain numbered spark plug; is that spark plug pre gapped to the correct size or do I have to gap it? For example: Champion Rcy 12yc.
Thank you in advance.
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When an OEM says to use a certain numbered spark plug; is that spark plug pre gapped to the correct size or do I have to gap it? For example: Champion Rcy 12yc.
Thank you in advance.
Hi,
Yes and no! It is gapped for automotive use. It should be regapped to 0.028 -0.030" for you mower.
Peace,
Clarke
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