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    1990 Force 120HP #2 Cyl zero compression and upon opening piston shows damage

    I think you are going to be ok with those ring gaps I did a very fast rebuild on my 2003 mercury 125 3 years ago and I only put in new piston rings on the motor and a used standard piston from ebay for cyl2 which was blown and the motor is still running strong to this day without problems my...
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    need some help on base timing on a 2003 mercury 125 2+2 outboard

    I have a 2003 mercury 125 2+2 outboard does anyone knows what the idle base timing should be on this motor
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    Moving the filter

    I have 1 of these motors it is very important to have another fuel filter between the tank and the motor That is what I did with my motor because as you found out there is unfiltered fuel going into the pump which can cause a problem with the check valves inside the pump
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    Merc Fuel Lines

    I have the same motor and had the same problem at the beginning of the year the fuel pump was the problem with my motor I will suggest a fuel pump rebuild but please buy the OEM equipment as I found out the hard way with mine the cheap rebuild kit that I bought online worked good for about 3...
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    Mixture screw adjustment and explanation on 2003 mercury 125 2+2

    Thanks for the replay that is what I m going to do when I get the boat in the water again the mixture is set pretty close right now the acceleration from stand still is very good with no hesitation and the motor is running good on idle for the most part what I m thinking is that the motor is a...
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    1992 Mercury 100 HP -Inline Fuel Filter

    The 100 115 and the 125HP mercury outboard from that era I have found that they have the poorest fuel delivery and filtration system of any other outboard the problem is that you should have 2 filters on that motor the first filter should be from your fuel tank into the engine I recommend...
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    Mixture screw adjustment and explanation on 2003 mercury 125 2+2

    That is what I was thinking turning those screws 1/4 turn in on both carburetors and give that a try
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    Mixture screw adjustment and explanation on 2003 mercury 125 2+2

    Thanks for getting back to me this makes sense to me now I understand that those mixture screws only control the fuel that goes into the motor while on idle I think that is what is happening the engine is loading up with fuel when running on idle for an hour or so and 1 of those bottom...
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    Mixture screw adjustment and explanation on 2003 mercury 125 2+2

    Hi everyone I have a few questions regarding the mixture screws on a mercury 125 2+2 the current Setting that I have in the motor right now is 1.5 turns out on both carburetors the engine seems to run pretty well for most parts in all bands of power and without bogging down during acceleration...
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    1988 50 hp force outboard problem

    i have a 1988 50 hp force outboard the motor runs great and is on a 1972 checkmate mx15 and i get at full out 30 mph but i have a problem i replaced the spark plugs and when i pulled out the old ones i seen that they had some black oil deposits on them which is normal but when i soked them on...
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