Reply To: Spark plugs

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February 11, 2021 at 12:48 pm #230130
ROBERT LAFAYETTE
Participant

    US MEMBER PAY BY CHECK

    The correct Champion
    Spark plug for the
    Mercury KD-4 is a
    Champion J-7j gapped
    At .025

    Peter Hunn’s book

    “The Old Outboard”
    Has all spark plug
    Listings in back of
    Book pages # 296 – 299
    Good book! I have the
    3rd edition
    Can be found new on
    Amazon or used on EBay
    Etc…