I myself would work on the drive hub myself. I would either clamp the pin with vice grips or clamp it in a vice and start twisting the hub. Should come right off. Try a little heat if necessary. Never had one I couldn't remove. I don't think I would use heat on the flywheel. 
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149,682,1641,1711 with a 12hp in it 1 8" brinly plow 1 10" brinly plow 451 snow blower,H-48 International snow thrower 42" york rake with fold down grader blade.
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