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    1997 Mercury 20 hp Carb / Idle Issues

    To all the two-stroke experts: 1997 Mercury 20 hp. Ran great all of last year until I decided to winterize it without stabil and fuel in the tank/carb. I got busy with covid and family stuff. Anyways, took it out of storage and out to the river a month ago. Started up fine, idled fine, ran up...
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    97 20HP Merc Inlet Needle

    Cleaned the carb of my 1997 20 hp Mercury, put everything back together and the motor would not fire. Upon further inspection, it doesn’t look like fuel is making it into the bowl at all. Disassembled it and the bowl is dry but the fuel pump is wet with gas. This leads me to believe that the...
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    1999 20 hp Mercury 2-stroke Keeps Shutting Off

    1999 20 hp Mercury 2-stroke outboard: Was out on a small river this past weekend and my motor would run perfectly fine for about a half an hour, then just completely shut off anytime I wanted give it throttle. I could still idle just fine. I’d turn it off for about an hour or so and then it...
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    Shredded Impeller

    So anybody have a clue why this would have happened? Replaced the impeller this spring. Ran the motor all over the place for a week straight. Let it sit for a month. Go to fire it up with a barrel of water (difficult time starting). Had to rev the engine to get it started, then idled fine after...
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    Dunk's Decarb Process

    Hi, I have a 2-stroke 97 20 HP Mercury that I'm looking to Decarb using "Dunk's Method". Why does he recommend using a remote 1 gallon gas tank to mix the oil, fuel, and seafoam in? Can't I just use the primary fuel tank since I'm running it empty anyways? His method (post #6)...
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    1997 20 Hp Mercury Ignition Issues (Spark in 1 Cylinder)

    Alrighty folks. Motor was running okay with a rough idle a couple weeks ago. Thought nothing of it since it ran smoothly at higher RPM’s. I do some preventative maintenance and replace the plugs, cables, and coils. Go to the river and pull the rope, nothing. Wouldn’t start at all. Bring it back...
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    97 Mercury 20 HP 2-stroke NO SPARK

    So I decided to do some preventative maintenance on my 20 hp Merc. The motor started and ran fine days before this. I noticed a bunch of corrosion on the spark plug cables, so I decided to pull them and clean them. While doing so I may have gotten a little water inside one of the coil packs when...
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    99 2-stroke Mercury 20 Hp Black Oil Leak and Corroded Plug Wires

    Alrighty two-stroke experts, couple concerns/questions regarding my 99 20 hp Mercury: Ran the motor in a tank for 30 minutes after replacing the pump and water jacket. Put in the garage and noticed a semi-large puddle of black oil coming from behind the prop (see picture). Took the prop off and...
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    1997 20 Hp Mercury w/ broken head bolts for thermostat cover HELPP

    First post here and am looking for your help. Stick with me here: Wondering if anybody has any ideas or am I just screwed!? My 20 hp Mercury outboard wasn’t spitting watter so I replaced the impeller and seals on the lower unit. Everything went smoothly. Now let’s rewind a little bit; Before my...
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