Hitachi DH 18DBL Handling Instructions Manual page 41

● DH18DBQL with drill chuck holder installed
In the same manner as the drill bit is installed, install the driver bit to the drill chuck holder.
Apply the driver bit to the groove of screw head and turn on the switch to tighten the screw.
CAUTION
○ Exercise care not to excessively prolong driving time, otherwise, the screws may
be damaged by excessive force.
○ Apply the rotary hammer perpendicularly to the screw head when driving the
screw; otherwise, the screw head or bit will be damaged, or driving force will not be
fully transferred to the screw.
○ Do not attempt to use the rotary hammer in the rotation and striking function with
the chuck adapter and bit attached.
5. When driving wood screws (Fig. 21)
(1) Selecting a suitable driver bit
Employ plus-head screws, if possible, since the driver bit easily slips off the heads of
minus-head screws.
(2) Driving in wood screws.
○ Prior to driving in wood screws, make pilot holes suitable for them in the wooden board.
Apply the bit to the screw head grooves and gently drive the screws into the holes.
○ After rotating the rotary hammer at low speed for a while until the wood screw is partly
driven into the wood, squeeze the trigger more strongly to obtain the optimum driving force.
CAUTION
Exercise care in preparing a pilot hole suitable for the
wood screw taking the hardness of the wood into
consideration. Should the hole be excessively small or
shallow, requiring much power to drive the screw into it,
the thread of the wood screw may sometimes be
damaged.
6. Hammering only
This rotary hammer can be set to hammering only mode by
pressing the push button and turning the change lever to the
mark (Fig. 22).
● DH18DBQL with drill bit holder installed
(1) Mount the bull point or cold chisel.
(2) Press the push button and set the change lever to middle of
mark and
The rotation is released, turn the grip and adjust the
cold chisel to desired position (Fig. 24).
(3) Turn the change lever to
Then bull point or cold chisel is locked.
mark (Fig. 23).
mark (Fig. 22).
41
English
Change lever Push button
Fig. 22
Change lever Push button
Fig. 23
Grip
Fig. 24