Makita DHR241RTJ Instruction Manual page 6

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.
Selecting the action mode
Rotation with hammering
1
3
009122
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
009123
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
009124
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.
1. Lock button
2
2. Rotation with
hammering
3. Action mode
changing knob
1. Rotation only
1. Hammering only
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.
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.
ASSEMBLY
CAUTION:
Always be sure that the tool is switched off and the
•
battery cartridge is removed before carrying out
any work on the tool.
Side grip (auxiliary handle)
5
1
2
4
3
009125
CAUTION:
Always use the side grip to ensure operating safety.
•
Install the side grip so that the teeth on the grip fit in
between the protrusions on the tool barrel. Then tighten
the grip by turning clockwise at the desired position. It
may be swung 360° so as to be secured at any position.
Bit grease
Coat the bit shank head beforehand with a small amount
of bit grease (about 0.5 -1 g; 0.02 - 0.04 oz.). This chuck
lubrication assures smooth action and longer service life.
6
1. Grip base
6
2. Side grip
3. Loosen
4. Tighten
5. Teeth
6. Protrusion