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    Mercury 75 4t 2003 powerhead gasket diagnoze

    Hello everyone! While performing a service on my Mercury 75 four-stroke (the 4-carburetor model, which is essentially the same engine as the Yamaha F80), I noticed that the engine oil was heavily contaminated with water. The engine has run for approximately 30 hours since the last service. When...
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    Carbs from yamaha 100 to mercury 75

    Hi, Has anyone done it yet? I have mercury 75 elpt, 4 stroke, 2003 and i would like to have a bit more power. I was thinking to get carbs from merc 90, but if the engines are the same, why not yamaha 100? Many thanks
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    Yamaha f80 2003 4 stroke sigal only on one ignition coil wire

    Hi, I have a huge problem finding out what is wrong with my motor. When I was checking timing on engine I noticed that i get signal only on one wire on each ignition coil. Changed ignition coils and its the same. When I plug strobe light on wire cyl#1 stribe light blinks like it should. When I...
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    Mercury 75 4 stroke spark at sparkplug but no ignition (2&3) cylinder

    It is 2003 mercury 75 4 stroke, 4 carbs. What can that be (video). You can hear spark jumping from cable to sparkplug, but nothing. Carbs were cleand Fuel filter and lines were replaced New sparkplugs
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    Mercury 75 elpt stucked between 2000-3000 rpm 4 stroke

    Hi, I am writing this post because I have no ideas left what else can i check or look for. when I bought this motor it did not run well, due to bad/old gasoline.it was sneezing and running a bit rough. So I did some service as: New gasoline, New gasoline seperator (water in gasoline) Spark plugs...
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