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    1990 25 HP Mercury Flywheel Magnets

    Anybody have a picture of this model flywheel? Mine are no longer bonded to the cast iron and are causing an ignition issue on my motor: Mercury Alternator Driven Ignition Systems Two Cylinder Engines NOTE: These engines sometimes develop a problem where you only have one cylinder firing...
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    1990 25 HP Mercury Ignition Troubleshooting

    I have a 1990 25 HP Mercury (0C26XXXX) that I need some help with. It is only firing on the top cylinder. Switched the wires on the coils as recommended here and the other coil fired the top cylinder as well. Coils are good. Built a DVA to check voltages. Stator voltages and resistance...
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    1990 25 HP Merc firing on one cylinder

    I have a 1990 25 HP Mercury (0C26XXXX) that I need some help with. It is only firing on the top cylinder. Mechanic friend thought it might be the switch box so I took another switch box from a parts motor I have and swapped the old one out (Part number 7452A15). Still the same ? Only firing...
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    1990 25 HP Merc - Intermittant starting

    I have a 1990 25 HP Merc with electric start and console controls that is driving me crazy... This guy will start and run great. Turn it off and come back an hour or two later and it cranks all day long and won't start. Come back tomorrow and it fires right up. ARGH! Checked the plugs when...
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    1990 25 HP Mercury Outboard Problems

    Have a 1990 25 HP Mercury that I was getting ready for my 13 foot Boston Whaler. Had the carb rebuilt, did the annual maintenance and it seemed to be fine out of the water. Revved up nicely using the fast idle lever. I put it in the water and took out for a test spin. It was OK in the lower...
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