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Recent content by Roger laws

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    Mariner 90 HP three cylinder two atroke outboard

    I have a 90 HP three cylinder two stroke outboard. It runs extremely well up to 3000 revs, at 3200 revs it will run for about ten minutes and a warning buzz starts up, at 3400 revs the buzz starts immediately. By reducing the revs to idle and placing the gearbox in nuetral the buzz stops after...
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