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  1. S

    Conversion to longshaft

    I have a 40hp Mariner (40M) which is 15" from transom clamp to cavitation plate.Can I convert it to 20" to fit my boat?
  2. S

    Magnesium Anodes

    I have a few magnesium anode r I have a few magnesium anode rods in the garage.I want to cut and shape pieces to fit my small 3.5 hp outboard.Can one use a magnesium anode on an outboard in salt water?
  3. S

    Fuel contamination

    "I am a bit worried as the fue "I am a bit worried as the fuel container used to purchase petrol in was initially filled with diesel.If the petrol is contaminated with a little diesel,could it damage my small 4-stroke outboard?"
  4. S

    Sacrificial Anodes

    "If my outboard is to be used "If my outboard is to be used in fresh water only, should I replace the zinc anodeswith magnesium ones?"
  5. S

    Cylinder Compression

    "I recently purchased a mid 80 "I recently purchased a mid 80`s Mariner 40M,I have not run her as of yet.I measured the compression of both cylinders cold and found the following results: Cylinder 1~ 140psi Cylinder 2~ 138psi The question asked, are these results ok for this outboard or...
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