6
Installing or removing drill bit
For HP2032 and HP2034 (Fig. 2)
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 of the three holes and tighten clockwise. Be
sure to 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 original
position.
For HP2033 (Fig. 3)
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
clockwise until the chuck is tightened with a little
click. After the click, always tighten the chuck addi-
tionally to prevent accidental loosening during opera-
tion. To remove the bit, hold the ring and turn the
sleeve counterclockwise.
Depth gauge (Fig. 4)
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 hous-
ing.
Switch action (Fig. 5)
CAUTION:
Before plugging in the tool, always check to see that
the switch trigger actuates properly and returns to the
“OFF” position when released.
For HP2032 and HP2033
To start the tool, simply pull the trigger. tool speed is
increased by increasing pressure on the trigger.
Release the trigger to stop. For continuous operation,
pull the trigger and then push in the lock button. To
stop the tool from the locked position, pull the trigger
fully, then release it.
For HP2034
To start the tool, simply pull the trigger. Release the
trigger to stop. For continuous operation, pull the trig-
ger and then push in the lock button. To stop the tool
from the locked position, pull the trigger fully, then
release it.
Reversing switch action (Fig. 6)
For HP2032 and HP2033
CAUTION:
• Always check the direction of rotation before opera-
tion.
• Use the reversing switch only after the tool comes
to a complete stop. Changing the direction of rota-
tion before the tool stops may damage the tool.
This tool has a reversing switch to change the direc-
tion of rotation. Move the reversing switch lever to the
n position for clockwise rotation or the o position
for counterclockwise rotation.
Speed change knob (Fig. 7)
Two rpm ranges can be preselected with the speed
change knob. Turn the speed change knob to the
position 1 or position 2.
Position 1: 0 – 850 rpm (Fig. 7-1)
Position 2: 0 – 2,900 rpm. (Fig. 7-2)
If it is hard to turn the knob, first turn the chuck
slightly in either direction and then turn the knob
again.
Selecting action mode (Fig. 8)
This tool has an action mode change knob.
For rotation with hammering, turn the action mode
change knob to the posision of g symbol. (Fig. 8-1)
For rotation only, turn the action mode change knob
to the position of f symbol. (Fig. 8-2)
CAUTION:
Always turn the action mode change knob all the way
to your desired mode position. If you operate the tool
with the kob positioned half-way between the mode
symbols, the tool may be damaged.
Operation
1. Hammer drilling operation
When drilling in concrete, granite, tile, etc., turn
the action mode change knob to the position of
g symbol to use “rotation with hammering”
action. Be sure to use a tungsten-cabide tipped
bit. 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 sev-
eral times, the hole will be cleaned out. After drill-
ing the hole, use the blow-out bulb to clean the
dust out of the hole. (Fig. 9)
2. Drillng operation
When drilling in wood, metal or plastic materials,
turn the action mode change knob to the position
of f symbol to use “rotation only” action.
• Drilling in wood
When drilling in wood, best results are
obtained with wood drills equipped with a guide
screw. The guide screw makes drilling easier
by pulling the bit into the workpiece.
• Drilling in metal
To prevent the bit from slipping when starting a
hole, make an indentation with a centerpunch
and hammer at the point to be drilled. Place the
point of the bit in the indentation and start drill-
ing.
Use a cutting lubricant when drilling metals.
The exceptions are iron and brass which
should be drilled dry.
