AC motor turning a certain turns and stop, then can turns reverse only for certain turns
This is what is known as a "gearhead motor" &mdash; a motor married directly to a gearbox.

The motion limits are built into the gearbox, so you'll have to remove or modify that in order to get continuous motion. That's a mechanical question, not an electrical one.

However, note that the motor itself is labeled "DUTY INT.", which means that it's only rated for intermittent duty cycle operation. It may overheat when run continuously.