7
When the reversing switch lever is in the neutral position,
the switch trigger cannot be pulled.
CAUTION:
• Always check the direction of rotation before
operation.
• Use the reversing switch only after the tool comes
to a complete stop. Changing the direction of
rotation before the tool stops may damage the tool.
• When not operating the tool, always set the
reversing switch lever to the neutral position.
Changing the quick change chuck for
SDS-plus
For model DHR243
The quick change chuck for SDS-plus can be easily
exchanged for the quick change drill chuck.
Removing the quick change chuck for SDS-plus
1
2
3
012690
CAUTION:
• Before removing the quick change chuck for
SDS-plus, always remove the bit.
Grasp the change cover of the quick change chuck for
SDS-plus and turn in the direction of the arrow until the
change cover line moves from the
symbol to the
symbol. Pull forcefully in the direction of the arrow.
Attaching the quick change drill chuck
1
2
3
4
012689
Check the line of the quick change drill chuck shows the
symbol. Grasp the change cover of the quick change
drill chuck and set the line to the
symbol.
Place the quick change drill chuck on the spindle of the
tool.
Grasp the change cover of the quick change drill chuck
and turn the change cover line to the
symbol until a
click can clearly be heard.
Selecting the action mode
Rotation with hammering
1
2
3
012629
For drilling in concrete, masonry, etc., depress the lock
button and rotate the action mode changing knob to the
symbol. Use a tungsten-carbide tipped bit.
Rotation only
1
012631
For drilling in wood, metal or plastic materials, depress
the lock button and rotate the action mode changing
knob to the
symbol. Use a twist drill bit or wood bit.
Hammering only
1
012630
For chipping, scaling or demolition operations, depress
the lock button and rotate the action mode changing
knob to the
symbol. Use a bull point, cold chisel,
scaling chisel, etc.
CAUTION:
• Do not rotate the action mode changing knob when
the tool is running. The tool will be damaged.
• To avoid rapid wear on the mode change
mechanism, be sure that the action mode changing
knob is always positively located in one of the three
action mode positions.
• When changing from the symbol mode to the
symbol mode, the action mode changing knob
may no longer move in the
symbol position. At
1. Hammering only
1. Rotation only
1. Rotation with
hammering
2. Lock button
3. Action mode
changing knob
1. Spindle
2. Quick change
drill chuck
3. Change cover
4. Change cover
line
1. Quick change
chuck for
SDS-plus
2. Change cover
line
3. Change cover
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