Re: 5.5 hp evenrude fisherman l963
Whoa!!!
In the first place there is no seal on a 5.5hp!!! It has a slinger on the shaft that throws the oil off and from there it is sucked back down into the intake manifold via special drillings in the crankcase. An unbelievably simple system that works very well.
If your magneto is all glopped up with black goo, that is from somebody being overly generous with greasing the armature plate mountings. It liquifies and vibration slops it all over the points and stuff. If it WERE crankcase oil, it would be clean oil, just like the fuel in the tank, which is what it would actually be.
Now, to remove the armature plate: You do not need to remove the coils or anything else. However, it is wise to remove the points just to clean the glop off them and the plate. Use some spray can electrical cleaner. To get the armature plate off, just loosen the four phillips head screws, two in the coils and two between them. They are "captive" meaning are retained after you loosen them several turns and you don't have to take them completely out. Also remove the clip holding the throttle arm, then the armature plate will lift right off. About 3 or 4 screws will then remove the mounting rings. Note that the aluminum ring goes with flat side UP. Lubricate them lightly with just a thin smear of EP grease.
When reinstalling the flywheel, make sure the tapers are clean and dry and use a torque wrench to tighten the nut to 40-45 ft/lbs. Don't think you can ignore this. The consequences are $$$.
Merry Christmas, y'all.