The service manuals I have don’t mention disassembly or assembly, only how to remove/install as shown here. If the bearing is meant to come out, I would heat it with a propane torch until it starts to smoke, and then drop it squarely onto the end of a short pipe held vertically in a vise. The pipe needs to be the size which gives the bearing a place to go, and put a rag into it to catch the bearing. 
Dropping it onto a bench won’t do anything because it appears that the bearing is flush with the cage surface. The bearing needs clear space to drop into. The sleeve tool is part number T-888. If your serial number is below .18286 and your flywheel weighs 4 pounds, you may need the 6.25 pound flywheel if idling is poor.
