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  1. K

    Prop for Merc 115

    Hello all, I was hoping someone could help me with prop selection for an '09 Merc Optimax 115 hp. It's mounted on a 17-1/4 foot long 2009 Lund 1725ss Explorer fishing boat. Right now my buddy gets 5750 rpms out of a 19 pitch aluminum stock prop. He wants to buy a stainless prop and stay...
  2. K

    Mercury Mark 25

    This is my first post so forgive me if I'm asking questions that have been asked many times over. So I have already learned from this site (and the hard way) to change the impeller every 2 years to be on the safe side. I didn't do this on Wednesday :( I have a Mark 25, SN: 868788, that hasn't...
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