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Glad to hear another 63 merc 200 is churning up the water of another lake. They are funnest at WOT, you need to get it to another lake 🙂
You can do the top crank seal fairly easy by removing flywheel then mag plate and would be “low hanging fruit” at this point. You don’t really need to pull the bearing carrier as I stated before. I had replaced a bearing in one and that is where my head was. I use an old ice pick, to punch a hole in seal casing (not bearing housing) on both sides then carefully pry it out with a piece of wood as a fulcrum. That may get it to idle a bit better. For perfection you will need to do the rest. I use SKF seal 9243 for the upper crank seal. The 2 stacked lower crank seals are 2 x 8624
In my opinion that motor is very worthy venture. Really cool and unique styling and a lot of features of a modern motor.
BTW, your realistic goal should be to get it to slow to troll at no wake speeds. Getting it to idle perfectly down in the area of “stop” probably an unrealistic goal.
