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  1. J

    Ti ing issue: WOT crank timing vs engine run timing, merc 60Hp 3 cyl

    Thanks, this makes a lot of sense. I think you are spot on. This is the only explanation that makes sense to me.
  2. J

    Ti ing issue: WOT crank timing vs engine run timing, merc 60Hp 3 cyl

    Thanks Leachy, what did you used in the search bar to find this video? I did lots if searches without success
  3. J

    Ti ing issue: WOT crank timing vs engine run timing, merc 60Hp 3 cyl

    Compression is more than 9 bar on each cylinder. Spark seem te be strong on each plug. I did check the difference in running with no 1 and then no 2 and then no 3 spark plug removed. It seems they are all contributing well to the performance
  4. J

    Ti ing issue: WOT crank timing vs engine run timing, merc 60Hp 3 cyl

    Hi, I bought a merc 60Hp 3 cyl 2 stroke, but cant get it to exceed 3000RPM under load. When in neutral I can get it to 4800 RPM. It should be able to do 5200 RPM. Carbs has been cleaned, Fuel lines cleaned Fuel pump redone. New spark plugs When checking tbe crank idle and crank WOT timing this...
  5. J

    Model ID / serial number Mariner 75 Please help!

    I struggled to find a number as well. Found it punched on a piece that looked like a "welch" plug on the block.
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