Functional Description - Makita HR1840 Instruction Manual

FUNCTIONAL DESCRIPTION

Always be sure that the tool is
CAUTION:
switched off and unplugged before adjusting or
checking function on the tool.
Switch action
CAUTION:
Before plugging in the tool, always
check to see that the switch trigger actuates
properly and returns to the "OFF" position when
released.
Switch can be locked in "ON" posi-
CAUTION:
tion for ease of operator comfort during extended
use. Apply caution when locking tool in "ON"
position and maintain firm grasp on tool.
► Fig.1: 1. Switch trigger 2. Lock button
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.
For continuous operation, pull the switch trigger, push in the lock
button and then release the switch trigger. To stop the tool from
the locked position, pull the switch trigger fully, then release it.
Lighting up the front lamp
For HR1841F
► Fig.2: 1. Switch trigger 2. Lamp
Do not look in the light or see the
CAUTION:
source of light directly.
To turn on the lamp, pull the switch trigger. Release the
switch trigger to turn it off.
Do not use thinner or gasoline to clean
NOTICE:
the lamp. Such solvents may damage it.
NOTE: Use a dry cloth to wipe the dirt off the lens of
the lamp. Be careful not to scratch the lens of lamp, or
it may lower the illumination.
Reversing switch action
Always check the direction of
CAUTION:
rotation before operation.
Use the reversing switch only after the
NOTICE:
tool comes to a complete stop. Changing the direction
of rotation before the tool stops may damage the tool.
When changing the direction of rota-
NOTICE:
tion, be sure to fully set the reversing switch to
(A side) or
position
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.
(B side). Otherwise, when
Selecting the action mode
Do not rotate the action mode chang-
NOTICE:
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
As soon as the torque limiter actuates,
NOTICE:
switch off the tool immediately. This will help pre-
vent premature wear of the tool.
Drill bits such as hole saw, which tend
NOTICE:
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.
ASSEMBLY
Always be sure that the tool is
CAUTION:
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
8 ENGLISH
symbol. Use a car-
symbol. Use a