# Before drilling operation

WARNING

Crushing Hazard

Do not operate the tool if the indexer is not properly locked! An unlocked tool may cause the complete tool to rotate and cause severe property damage and bodily injury.

- Make sure that the lock pin is flush to the nut surface with a tolerance level of less than 0.3mm above the surface.

Following conditions apply prior to operating the drill:

- Air hose connected to the drill

- Front part locked in the fixture

Test the emergency stop button as follows:

1. Push the start button.

2. Push the emergency stop button so that it locks in position. The air supply to the motor switches off and the spindle stops.

3. Disconnect the air hose.

4. Pull the emergency stop button to reset it.

5. Reconnect the air hose.

Perform the following before drilling operation:

1. Lock the tool in the jig.

2. Press the button (A or B) to release the indexer and adjust the position of the tool.

3. Release the button to lock in position.

4. Check that the lock pin on the indexer is level to the nut surface.

5. Rock the tool from side to side to confirm the tool being locked in position.