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    Yamaha 99 4stroke leaking water out main engine oil plug

    I have a 2005 Yamaha 9.9 4 str I have a 2005 Yamaha 9.9 4 stroke with maybe 10 hours on it. I changed the engine oil the other day and while running the motor in a test tank I noticed water is dripping out of the main engine oil plug. The oil plug is teflon with a brass bolt head in the...
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