Makita hp2042 Instruction Manual page 5

For Model HP2040, HP2041
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 and then
push in the lock button.
To stop the tool from the locked position, pull the switch
trigger fully, then release it.
For Model HP2042
To start the tool, simply pull the switch trigger. Release
the switch trigger to stop.
For continuous operation, pull the switch trigger and then
push in the lock button.
To stop the tool from the locked position, pull the switch
trigger fully, then release it.
Reversing switch action (Fig. 2)
For Model HP2040, HP2041
This tool has a reversing switch to change the direction of
rotation. Move the reversing switch lever to the
tion (A side) for clockwise rotation or the
(B side) for counterclockwise rotation.
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.
Speed change (Fig. 3)
Two speed ranges can be preselected with the speed
change lever.
To change the speed, turn the speed change lever to the
position 1 for low speed or the position 2 for high speed.
If the speed change lever does not turn easily, turn the
chuck slightly in either direction and turn the lever again.
Be sure that the speed change lever is set to the correct
position before operation. Use the right speed for your
job.
CAUTION:
• Always set the speed change lever fully to the correct
position. If you operate the tool with the speed change
lever positioned halfway, the tool may be damaged.
• Do not use the speed change lever while the tool is run-
ning. The tool may be damaged.
Selecting action mode (Fig. 4)
This tool has an action mode changing button.
For rotation with hammering, depress the button from the
g
side with symbol fully.
For rotation only, depress the button from the side with
symbol fully.
CAUTION:
• Always depress the action mode changing button all
the way to your desired mode position. If you operate
the tool with the button positioned halfway between the
mode symbols, the tool may be damaged.
ASSEMBLY
CAUTION:
• Always be sure that the tool is switched off and
unplugged before carrying out any work on the tool.
Installing side grip (auxiliary handle) (Fig. 5)
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.
Installing or removing drill bit
For Model HP2041 (Fig. 6)
Hold the ring and turn the sleeve counterclockwise to
open the chuck jaws. Place the bit in the chuck as far as
it will go. Hold the ring firmly and turn the sleeve clock-
wise to tighten the chuck.
To remove the bit, hold the ring and turn the sleeve coun-
terclockwise.
For Model HP2040, HP2042 (Fig. 7)
To install the bit, place it in the chuck as far as it will go.
Tighten the chuck by hand. Place the chuck key in each
posi- of the three holes and tighten clockwise. Be sure to
position tighten all three chuck holes evenly.
To remove the bit, turn the chuck key counterclockwise in
just one hole, then loosen the chuck by hand.
After using the chuck key, be sure to return it to the origi-
nal position.
Depth gauge (Fig. 8)
The depth gauge is convenient for drilling holes of uni-
form 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 tool body.
OPERATION
Hammer drilling operation
CAUTION:
• There is a tremendous and sudden twisting force
exerted on the tool/bit at the time of hole break-
through, when the hole becomes clogged with chips
and particles, or when striking reinforcing rods embed-
ded in the concrete. Always use the side grip (auxiliary
handle) and firmly hold the tool by both side grip and
switch handle during operations. Failure to do so may
result in the loss of control of the tool and potentially
severe injury.
When drilling in concrete, granite, tile, etc., depress the
m
action mode changing button from the side with
g
symbol fully to use "rotation with hammering" action.
Be sure to use a tungsten-carbide tipped bit.
Position the bit at the desired location for the hole, then
pull the switch trigger. Do not force the tool. Light pres-
sure gives best results. Keep the tool in position and pre-
vent it from slipping away from the hole.
Do not apply more pressure when the hole becomes
clogged with chips or particles. Instead, run the tool at an
idle, then remove the bit partially from the hole. By
repeating this several times, the hole will be cleaned out
and normal drilling may be resumed.
Blow-out bulb (optional accessory) (Fig. 9)
After drilling the hole, use the blow-out bulb to clean the
dust out of the hole.
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