How to operate the belt conveyor of walking tractor

Does the subject want to ask "how to operate the walking tractor at idle speed"

1. First, the idle speed of the walking tractor is controlled by the throttle, and slowly loosen the throttle opening adjusting screw with a screwdriver.

2. Secondly, when the engine is about to turn off, screw it in a little bit to keep the engine running, and adjust the adjusting screw of the idle mixture to make the engine reach the speed.

3. Finally, turn out the valve opening adjustment again to achieve stable idle work, which not only accelerates but also does not stall.