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Yamaha jults and cuts-out at full power ...HELP

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  • Yamaha jults and cuts-out at full power ...HELP

    I drive a 3.8m Humber RIB with an old 2-stroke auto lube 75 hp Yamaha engine on the back, starts idles like a normal 2-stroke but when going full power it Randomly jults and even cuts out at time then starts right back up and same again.
    Any Ideas

  • #2
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    I'd look carefully for loose or corroded wires and electrical connections....including battery cables.