1) Before removing the plate holding the coils, make some marks on the plate and crankcase so you can reinstall the plate in exactly the same spot. Moving the plate changes your ignition timing. We want it back exactly as it was. Scratch a line, use paint or a magic marker to make witness marks.
2) Now remove the two screws holding the coil plate to the crankcase. Unplug the four wires going into the back side of the fan housing, and pop out the grommet. Feed the wires through the hole as you remove the coil plate.
3) Here is the seal. It probably doesn't look quite like this one, as this is the new seal already installed. The old seal is likely to be ripped and have pieces hanging out of it.
4) Carefully drill a small hole through the seal and screw a small sheet metal screw into the hole as shown. Be careful not to go too deep when drilling. Just drill through the seal and stop as soon as your drill bit drops through. You do not want to hit the bearing under the seal. There is a space between the seal and bearing, just don't be bearing down so hard you fall through into the bearing. Grab the head of the screw with visegrips or a small prybar and pop the seal out.
5) Clean everything up and inspect the bearing. It should look something like this. Squirt a little oil on the bearing to prelube it, put oil or vaseline on the sealing lips of your new seal. Tap the seal in place until it looks like the seal in the third image. Reassemble in reverse order. Torque the flywheel nut to 53 ft-lbs.
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