Started working on a nice RD-13 that has been sitting in the shop for a number of years. While going over the ignition (another non-runner reported to be a runner) and finding a dead coil, I noticed the whole armature plate and ignition components are very oily, and lots of it is already gummed up. I assume this points to a faulty top crankshaft seal, but this one has a different seal than I am used to. I removed the spring and retaining washer under the ignition cam. Is it possible to pull the seal, or do I need to split the crank case open to get it out? This may be a dumb question, but is there an option to replace that upper retainer washer under the spring with a lip seal?
It’s all a big oily mess right now, so I am hoping this repair is easier than it looks.