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    Spark plug recomendation

    40hp 4 stroke efi 3cyl. recomended plug Champion RA8HC I Troll a lot at around 2mph, should I switch to a different plug? What would be recomended?
  2. D

    Low engine oil pressure alarm

    My 2009 Mercury 40 HP 4 stroke 3 cyl EFI let out one long beep and shut down engine to guardian mode. I shut down and restarted again and it ran fine wot back to shore. I pulled the code from Vessel view and it was a low oil pressure alarm. Oil & filter have less than 50 hours on it, oil level...
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