Small Engine Troubleshooting Problems? Ask a Mechanic Now.
See parts list above. The # ***** is the nut that holds the flywheel on. Without special tool to loosen, you just have to take a brass punch or solid piece of wood and tap the lip of the nut to loosen it. Nut is standard thread.
see figure 12 above.
Did you see my response and the link on removing the flywheel?