Hitachi DH 24PE (S) Technical Data And Service Manual page 21

(4) Neutral (Fig. 8)
The Model DH 24PE (S) has a neutral mode used for positioning a tool such as a flat chisel. Adjust the change
lever to a position halfway between "striking only" (
between the pinion sleeve and the second pinion ( B portion in the figure), and between the lock plate and the
locking claw of the second pinion ( C portion in the figure) is released and the cylinder rotates freely. Simply turn
the grip to adjust the tool to the desired position.
Released portion B
(stop of rotation)
Cylinder
Pinion sleeve
Second pinon
Second gear
--- 19 ---
mark) and "rotation and striking" (
Lock plate
Released portion C
(free rotation of tool)
Locking claw of second pinion
Fig. 8
marks). Engagement