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    Bottom 2 cylinders intermittent...

    :confused:Okay guys... I'm no mechanic, but I have figured out my bottom 2 cylinders are not firing properly! Here's my symptoms: My engine is a 1982 Mercury 50 HP (Thunderbolt Ing) 4 cylinder, 2 stroke. No power tilt/trim. Eng will start and rev up to what seems to be normal RPMs (no tach)...
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    50 HP Merc - Another year model question!

    I just bought a 50 HP Mercury Outboard S/N 6012663. Where do I go to find the year model and specifics on this motor? Cowling has blue strip/lettering and badged as "Thunderbolt Ignition". I suspect 81-82, that's the closest I have determined the year of the boat it was on...
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