How do you replace pulley on simplicity mower?

To replace the pulley on a Simplicity mower, first, ensure the mower is turned off and disconnected from the power source. Remove the mower deck by unscrewing the bolts or pins securing it, then locate the pulley you need to replace. Use a socket wrench to remove the nut holding the pulley in place, then slide the old pulley off the shaft and replace it with the new one. Finally, reassemble the mower deck and reconnect any components you removed.