What's causing this engine to ping? Honda 400EX

[@efrainrodriguez8174]

Mines had the same timing slap and eventually stopped running. When I tried turning it back on you can hear a slap but still with compression. In order to put it back on timing would I have to take the motor apart or what would I have to do.

[@nickhintz5616]

Awesome video

[@MikesGarageShop]

Thanks!