1957 McCulloch/Firestone 3.6hp boat motor

This topic has 2 replies, 2 voices, and was last updated 10 years, 9 months ago by davef57.

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May 15, 2015 at 3:24 am #1495
davef57
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Can someone tell me what spark plug and gap that I will need for my 1957 McCulloch/Firestone Tire &Rubber 3.6hp boat motor? It is a model 133-7-1075.
May 15, 2015 at 5:19 am #16014
retiredoz
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The book says Champion H10J (H10C nowadays) or equivalent, gapped at .035.
May 16, 2015 at 2:27 am #16082
davef57
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Thank you for the information.
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