English
26
CAUTION
○
Application of excessive force will not only deteriorate the tip edge of the drill
bit and result in the ine
ffi
cient work, but will reduce the service life of the rotary
hammer in addition.
○
Drill bits may snap o
ff
while withdrawing the rotary hammer from the drilled hole.
For withdrawing, it is important to use a pushing motion.
○
Do not attempt to drill anchor holes or holes in concrete with the machine set in the
rotation only function.
○
Do not attempt to use the rotary hammer in the rotation and hammering function
with the drill chuck holder attached. This would seriously shorten the service life of
every component of the machine.
●
When driving machine screws
(with the 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
○
Screw heads or bits will be damaged unless a bit appropriate for the screw
diameter is employed to drive in the screws.
○
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 hammering function
with the drill chuck holder and bit attached.
●
When driving wood screws
(with the drill chuck holder installed)
(1) Selecting a suitable driver bit
Employ plus-head screws, if possible, since the driver bit easily slips o
ff
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
○
Screw heads or bits will be damaged unless a bit appropriate for the screw
diameter is employed to drive in the screws.
○
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.
000Book̲DH26PMC̲ChS.indb 26
000Book̲DH26PMC̲ChS.indb 26
2021/05/14 10:03:18
2021/05/14 10:03:18
