ENGINE DISASSEMBLY 

7. Heat the magneto side case and tap the bearings from their mounts with a mallet and a suitable drift.
8. The hole in the magneto side case containing the lay shaft bushing does not go all the way through the case. Hold the case over a wooden bench with the bushing facing downward.  Tap the case two or three times on the bench and the bushing will fall out, if the case is warm enough.
9. Remove the crankshaft seals and the transmission drive bearing seals with a mallet and a drift, pushing them out from inside the cases.  A 3/8" or 1/2" drive socket whose outside diameter is slightly smaller than the seal makes a good drift.  Put an extension on the socket and use a soft mallet to tap the seals from their mounts.
10. Remove the main bearing from the primary side of the crankshaft with two large screwdrivers or two pry bars (see Figure 22).
NOTE: The side loading caused by the prying is absorbed by the balls in the bearing, and can mar the balls or the races and cause failure of the bearing.  Do not use the primary side main bearing once it has been pried off the crankshaft.  Replace it with a new one.
11. Remove any shimming washers between the primary side main bearing and the flywheel and tag them for identification.
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