Engine 2014: General Subjects

1. A in the open direction until the valve is backseated one-half turn
2. B to fully close the valve, then open the valve to the fully open position.
3. C in the closed direction, then open the valve to its previously open position.
4. D to open the valve until it touches the backseat, then close the valve to the desired position.

Tip: press A-D to answer