12. OPERATION NOTICE Cancelling automatic warming-up operation If it becomes necessary in an emergency to lower the engine speed to low idling, cancel the automatic warming-up operation as follows. 1. Turn fuel control dial a to the full speed (MAX) position and hold it for 3 seconds. 2. When fuel control dial a is returned to the low idling (MIN) position, the engine speed will drop. PC450-ENG 2-56