How do you fix blades not engaging in a yardman riding mower?

To fix blades not engaging in a Yardman riding mower, first check the blade engagement lever to ensure it's fully engaged. Next, inspect the safety switch under the seat and the PTO (Power Take Off) switch for any signs of damage or malfunction. Additionally, examine the drive belt for wear or disconnection, as a broken belt can prevent blade engagement. If these components are functioning correctly, consult the user manual for further troubleshooting or consider seeking professional help.