Operation - Makita BHR180 Instruction Manual

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.
Selecting the action mode
Rotation with hammering (Fig. 5)
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. 6)
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. 7)
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.
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) (Fig. 8)
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). This chuck lubrication
assures smooth action and longer service life.
Installing or removing the bit
Clean the bit shank and apply bit grease before installing
the bit. (Fig. 9)
Insert the bit into the tool. Turn the bit and push it in until it
engages. (Fig. 10)
If the bit cannot be pushed in, remove the bit. Pull the
chuck cover down a couple of times. Then insert the bit
again. Turn the bit and push it in until it engages.
After installing, always make sure that the bit is securely
held in place by trying to pull it out.
To remove the bit, pull the chuck cover down all the way
and pull the bit out. (Fig. 11)
Bit angle (when chipping, scaling or
demolishing) (Fig. 12)
The bit can be secured at the desired angle. To change
the bit angle, depress the lock button and rotate the action
mode changing knob to the O symbol. Turn the bit to the
desired angle.
Depress the lock button and rotate the action mode
changing knob to the
bit is securely held in place by turning it slightly. (Fig. 13)
Depth gauge (Fig. 14)
The depth gauge is convenient for drilling holes of uniform
depth. Loosen the side grip and insert the depth gauge
into the hole in the side grip. Adjust the depth gauge to the
desired depth and tighten the side grip.
NOTE:
• The depth gauge cannot be used at the position where
the depth gauge strikes against the gear housing.
Dust cup (Fig. 15)
Use the dust cup to prevent dust from falling over the tool
and on yourself when performing overhead drilling
operations. Attach the dust cup to the bit as shown in the
figure. The size of bits which the dust cup can be attached
to is as follows.
Dust cup 5
Dust cup 9

OPERATION

Hammer drilling operation (Fig. 16)
Set the action mode changing knob to the
Position the bit at the desired location for the hole, then
pull the switch trigger.
Do not force the tool. Light pressure gives best results.
symbol. Then make sure that the
Bit diameter
6 mm - 14.5 mm
12 mm - 16 mm
symbol.
7