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  1. #1

    Default 1990 48 hp johnson

    This should be an easy one for somebody out there. Can someone tell me what the spark plug gap should be?

  2. #2
    Admiral
    Join Date
    Aug 2002
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    corpus christi texas
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    Default Re: 1990 48 hp johnson

    gap is .030" using Champion QL78YC.

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