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40 merc question

Discussion in 'Boats and Motors' started by atrkyhntr, Jul 1, 2004.

  1. I was out on my cuz's boat and his 40 merc seems to be running at 1/2 speed and the boat does not plane out...
    Are there any adjustments that he can make to speed this motor up?
    What do boat mechanics charge now to look at this sort of thing?
    THANKS in advance :D