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    Mariner Magnum II 150hp V6 - Revving but not Accelerating under load

    All, I?m experiencing an issue with my Mariner Magnum II 150hp V6 2stroke outboard. Whilst idle or under load up to 2000rpm I?m happy with the engine performance, however, when I increase the load to 2500rpm the engine revs higher but fails to accelerate and would appear to lose momentum...
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