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  1. #1
    Tin Boats Moderator Pokie Pa's Avatar
    Join Date
    Jan 2008
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    Lake Ariel, Pa.
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    7,286

    What spark plug??

    What spark plug should I be using in a 2006 Merc 75HP Optimax? It say 1ZFR5J NGK, BUT....
    I get different information when I research it. I don't have the orginial owners manual.
    Then what gap should they be set at? It says .032 but I want to be sure.
    Thanks for the info
    .

  2. Member
    Join Date
    Jun 2013
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    LONGVIEW TEXAS
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    #2
    izfr5j
    .................................................. ...the scariest thing in life is the unknown ...................................