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Knocking noise when first started.

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  • Knocking noise when first started.

    Greetings all
    03 15 HP 4 stroke. When the engine first start it make a knocking noise and then shuts up for as long as it's running. I suspect it makes the knocking noise until the rods get oil pressure. It ran all season last year but I fear it's a worn connecting rod. The parts break down I've seen show no inserts.
    Has anyone else seen this behavior?

    Thanks
    JanS48
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