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  1. J

    RPM's

    I have a 1991 Mariner 40 <br />What is the correct RPM's I should turn???<br />Jimmy
  2. J

    PROP

    i HAVE A QUESTION.<br />i RECENTLY PUT A 1991 MARINER MAGNUM 40 ON A<br />WELD-CRAFT 16X52 FLAT. WHAT IS THE RECOMMENED<br />PITCH PROP SHOULD I HAVE?<br />I HAVE 2 PROPS BUT INSTEAD OF CONTINUE TO TRY ONE OR ANOTHER IS THERE A SPECIAL CALCULATION THAT IS USED TO PROP THIS SETUP<br />JIMMY
  3. J

    RPM's

    I have a 40HP 4 cylinder Mariner Magnum. I previously had a 40 Mariner 3 cylinder. I am having trouble getting the right RPM's. I first would only get 5000 RPM's, then I repitched my prop and only get 5100. When I trim up the motor<br />to where it seems to run correctly I only get 5100. When I...
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