Hitachi NR 65AK Service Manual page 15

(c) By pulling the Trigger [52] when there is no
workpiece near the nail point, the Trigger Arm
[50] pushes up Pushing Lever (C) [24] and at the
same time Pushing Levers (A) and (B) [30] and
[28] move. At this time, Pushing Lever (B) [28]
turns in the direction going far from Pushing
Lever (A) [30] through the guide groove of the
Nose [20]. Thus Pushing Lever (B) [28] comes
off the groove of Pushing Lever (A) [30] (Fig. 9).
Pushing Lever
(B) [28]
Come off
(d) Push up the tip of Pushing Lever (A) [30]. Then
only Pushing Lever (A) [30] moves while Pushing
Levers (B) and (C) [28] and [24] do not move.
Since Plunger (A) [47] is not pushed up, the nailer
does not start (Fig. 10).
Nose [20]
Pushing Lever (B) [28]
Guide groove
Pushing Lever (A)
[30]
Groove of Pushing
Lever (A) [30]
Fig. 9
Pushing
Lever (B)
[28]
Pushing
Lever (A)
[30]
--- 11 ---
Trigger [52]
Trigger Arm [50]
Pushing
Lever (C)
[24]
Nail point
Plunger (A) [47]
Pushing
Lever (C)
[24]
Hole
Fig. 10