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Spark plug gap question

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  • Spark plug gap question

    I have a 1998 Yamaha 9.9HP 2 stroke and am not sure what to gap the plugs at. The owners manual says .031-.035" but there is a sticker inside the engine housing which calls for .040" gap. I know it's not a huge difference but I'd like to know which is correct.

  • #2
    I would go with the sticker on the engine.

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    • #3
      I would stick with manufactures instructions.

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      • #4
        Thanks for the replys.

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