Youneed to remove the head, backplate, piston, liner, prop drive washer,
crankshaft and carb before trying to remove the bearings. After you remove
all the bits, place the crankcase in an oven set to about 250-300 deg F for
about 10-15 minutes. If you set the crankcase on its back, the rear bearing
may just fall out on its own. If not, just rap the rear of the crankcase on
some soft wood such as pine or fir. The front bearing may be more stubborn.
I made a piece of coat hangar wire into a hook with a flattened end so that
I could get behind the bearing and pull it out. With some engines you can
also push the bearing out with a piece of dowel.
You can visit my web site and look at the FAQ for removal and replacement
Desert Sky Model Aviation
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