Makita HR1840 Betriebsanleitung Seite 8

NOTICE:
Use the reversing switch only after the
tool comes to a complete stop. Changing the direc-
tion of rotation before the tool stops may damage the
tool.
NOTICE:
When changing the direction of rota-
tion, be sure to fully set the reversing switch to
position (A side) or
the switch trigger is pulled, the motor may not rotate
or the tool may not work properly.
► Fig.3: 1. Reversing switch lever
This tool has a reversing switch to change the direc-
tion of rotation. Move the reversing switch lever to the
position (A side) for clockwise rotation or to the posi-
tion (B side) for counterclockwise rotation.
Selecting the action mode
NOTICE:
Do not rotate the action mode chang-
ing knob when the tool is running. The tool will be
damaged.
NOTICE:
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 action mode positions.
Rotation with hammering
For drilling in concrete, masonry, etc., rotate the action
mode changing knob to the
bide-tipped drill bit.
► Fig.4: 1. Action mode changing knob
Rotation only
For drilling in wood, metal or plastic materials, rotate
the action mode changing knob to the
twist drill bit or wood drill bit.
► Fig.5: 1. Action mode changing knob
Torque limiter
NOTICE:
As soon as the torque limiter actuates,
switch off the tool immediately. This will help pre-
vent premature wear of the tool.
NOTICE:
Drill bits such as hole saw, which tend
to pinch or catch easily in the hole, are not appro-
priate for this tool. This is because they will cause
the torque limiter to actuate too frequently.
The torque limiter will actuate when a certain torque
level is reached. The motor will disengage from the
output shaft. When this happens, the drill bit will stop
turning.
(B side). Otherwise, when
symbol. Use a car-
symbol. Use a
ASSEMBLY
CAUTION:
Always be sure that the tool is
switched off and unplugged before carrying out
any work on the tool.
Side grip (auxiliary handle)
CAUTION:
Always use the side grip to ensure
safe operation.
CAUTION:
After installing or adjusting the side
grip, make sure that the side grip is firmly secured.
Install the side grip so that the grooves on the grip fit in
the protrusions on the tool barrel. Turn the grip clock-
wise to secure it. The grip can be fixed at desired angle.
► Fig.6: 1. Side grip
Grease
Coat the shank end of the drill bit beforehand with a
small amount of grease (about 0.5 - 1 g).
This chuck lubrication assures smooth action and lon-
ger service life.
Installing or removing drill bit
Clean the shank end of the drill bit and apply grease
before installing the drill bit.
► Fig.7: 1. Shank end 2. Grease
Insert the drill bit into the tool. Turn the drill bit and push
it in until it engages.
After installing the drill bit, always make sure that the
drill bit is securely held in place by trying to pull it out.
► Fig.8: 1. Drill bit
To remove the drill bit, pull the chuck cover down all the
way and pull the drill bit out.
► Fig.9: 1. Drill bit 2. Chuck cover
Depth gauge
The depth gauge is convenient for drilling holes of uniform
depth. Loosen the side grip and insert the depth gauge
into the hole on the side grip. Adjust the depth gauge to the
desired depth and tighten the side grip firmly.
► Fig.10: 1. Hole 2. Depth gauge
NOTE: Make sure that the depth gauge does not
touch the main body of the tool when attaching it.
Dust cup (optional accessory)
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.
Model
Dust cup 5
Dust cup 9
► Fig.11: 1. Dust cup
8 ENGLISH
Bit diameter
6 mm - 14.5 mm
12 mm - 16 mm