Hitachi NR 65AK Service Manual page 12

This tool has a sequential trip mechanism (single shot) for use when precision nail placement is necessary.
You must first depress the nail point where you want to drive a nail and then pull the trigger. After the nail is
driven, completely release the trigger and lift the tool off the work surface.
This tool is not designed for contact trip operation (bounce fire), and not available for contact trip valve units.
And this tool has a new pushing lever (safety) mechanism, this is a different push lever mechanism from another
nailers. The position of the pushing lever when the nail feeder is pulled back is shown as below.
At non-firing
Nose
Pushing lever
When nails are loaded and the trigger is depressed, the pushing lever comes down and when the pushing lever
touches the workpiece, a nail is driven.
At firing
Pushing lever
Nose
Nose
Workpiece
Pushing lever
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