2. Faulty PTO solenoid.
3. Bad PTO relay.
4. Damaged wiring or connectors.
5. Broken return spring.
6. Clutch is warped or bent.
7. Bearing has seized.
8. PTO assembly may need to be serviced or replaced.
It is recommended to consult with a certified mechanic or refer to the owner's manual for instructions specific to your Honda mower model.