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    1974 65hp Merc

    I am working on a 1974 65hp Mercury, Serial # 4044475 Does anyone know how to test the switch box? It has a destributer. Wires are white/black, blue and green.
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    Merc, troubleshooting <--READ ME!

    First off I would like to say, hello and welcome to the forum. Now before we start digging into Troubleshooting I would like to say, get yourself a manual. (See the first post in this forum named Merc Manuals ***Sticky Please*** by CV16. If and when these links die do a search on this forum...
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    Strong Burning plastic oder

    Engine: 83 115 Mec Heres the story: I installed a Commander 2000. Took it out today to test it out and fish. My friend followed me out in his boat. He told me that when he was behind my he smelled a very strong oder that smelled like burning plastic. He said that it was so strong he had to get...
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    74, 65hp Merc, no spark

    Year: 1974 HP: 65 Maker: Mercury Serial #:4044475 Issue: I can not find a Schematic for this motor, I believe that it is a type III but I cant seen to find any wiring diagram with just the white/black, black, blue wires coming from the distributer. I also noticed that the red and brown wires...
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    1966 95hp Thunderbolt Merc

    Can anyone tell me what the volt/ohm reading should be on a good coil for these motors? We have one good coil that reads 10.91m. We bought a brand new one and it reads 9.??m What ever bank we put this good coil on is what we get fire from. Bought a new one and it fails. We can not seem to be...
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    Tac Issue

    I just bought a tac and wire harnes for the tach. I set the tac at 6c 6p. Now, the tac will only register when I get her up to about 3000 rpm. Any lower and it starts to work intermitently. She doesnt read at idle. I have a 1983 inline 6 115 merc. The tac I got off of Iboats 3461316 There is no...
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    5000rpm starts to stall

    At about 5000rmp ingine starts to stall. Changed fuel line, bulb, tank, intank filter, rebuild fuel pump. If I reach back and pump the bulb, the engine will come back to life. The bulb doesnt seem to go soft, but the bulb doesnt ever get hard either. Its done this since I bought it back in feb...
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    Trim / Tilt Issue

    1983 Bas Cat. 1983 85 Merc Trim type: Single solenoid, 2 cylinders Solenoid was replaced last year. Hydraulics needs bleeding, motor was running fine before the trim quit working. Issue: When holding the button in the up position solenoid clicks once, trim motor does not run. When holding...
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    LU , grimlins

    1983 Thunder Craft 160 SS Magnum Boat Serial # TCT15100M83K 1983 115 Mercury serial # 6412179 Bought the correct water pump for the sn# but the diameter of the pump base is slightly larger than the orifice it is suposed to seat into. any advice, is welcome...are these lu interchangable? If so...
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    83 115 Merc H2O pump replacement

    Hi yall...Im back:) Now that I got the motor running, I thought it would be a good idea to rebuild the water pump, since I dont know the history of the motor and the parts are dirt cheap I figured I would give this a shot. I got my manual in the mail today and was looking through it and was...
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    Synthetic vs reg

    On a 1983 115 merc would it be better if i went with synthetic 2 Cycle marine oil or stay with the old stuff?
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    starting issue with 83 115 merc

    While trying to start the engine. I turn the key, starter engages, engine rolls over, engine coughs, starter disengages, engine does not start. Or; I turn the key, starter engages, engine starts to roll over ( no cough), starter disengages, engine does not start. At first when the engine is cold...
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    What model is my boat?

    Hello, I am new to boating and I just bought this boat. It is a 1983, manufactured by Thundercraft. For the life of me I can not find out what model it is. can anyone tell me what model this is?
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    Looking for a part

    Can anyone tell me were I can get this replacment part? Or suggest a substitute?
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    What model is my boat?

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