When key changing the Standard Group 2 combination, the tech should dial the old combination on the change mark and:

A. Rotate the dial three full turns clockwise.
B. Rotate the dial two full turns counterclockwise.
C. Rotate the dial to zero and then to the new combination.
D. Rotate the dial one full turn clockwise and one full turn counterclockwise.

The process to change the key on the Standard Group 2 combination lock involves steps specific to the lock's make and model, often necessitating a change key after dialing the old combination, and the correct procedure is not provided among the options. Always refer to the manufacturer's instructions for accurate guidance.

Explanation:

When key changing the Standard Group 2 combination, the correct procedure for a technician after dialing the old combination on the change mark is not specified among the options provided.

This process typically involves using a special change key or tool and following very specific steps that are unique to the make and model of the combination lock being serviced. If this is for a Sargent & Greenleaf mechanical combination lock, for example, the procedure usually requires the use of a change key after dialing the old combination.

It is crucial to consult the manufacturer's instructions for the precise steps and to ensure the lock is not damaged or the warranty voided. Failure to follow the correct procedure can result in an improperly set combination or damage to the lock.

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