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7
Switch action
Fig.3
CAUTION:
•
Before inserting the battery cartridge into the tool,
always check to see that the switch trigger
actuates properly and returns to the "OFF"
position when released.
To start the tool, simply pull the switch trigger. Tool
speed is increased by increasing pressure on the switch
trigger. Release the switch trigger to stop.
Reversing switch action
Fig.4
This tool has a reversing switch to change the direction
of rotation. Depress the reversing switch lever from the
A side for clockwise rotation or from the B side for
counterclockwise rotation.
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
Fig.5
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
Fig.6
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
Fig.7
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
Fig.8
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
Fig.9
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
this time, turn the tool on or turn the chuck by
hand in the
symbol position and then rotate
the action mode changing knob. Forcing the action
mode changing knob may cause tool damage.
Torque limiter
The torque limiter will actuate when a certain torque
level is reached. The motor will disengage from the
output shaft. When this happens, the bit will stop turning.
CAUTION:
•
As soon as the torque limiter actuates, switch off
the tool immediately. This will help prevent
premature wear of the tool.
•
Hole saws cannot be used with this tool. They
tend to pinch or catch easily in the hole. This will
cause the torque limiter to actuate too frequently.