Makita HR3000C Instruction Manual page 7

Rotation only (Fig. 6 & 9)
For drilling in wood, metal or plastic materials, rotate the
shift lever so that the
pointer on the change lever. Use a twist drill bit or wood
bit.
CAUTION:
• Do not rotate the change lever and/or the shift lever
when the tool is running under load. The tool will be
damaged.
• To avoid rapid wear on the mode change mechanism,
be sure that the change lever and/or the shift lever is
always positively located in one of the three action
mode positions.
• The action mode cannot be changed directly from
"hammering only" to "rotation only" or from "rotation
only" to "hammering only". First set the change lever
and the shift lever to "rotation with hammering" mode
position shown in Fig. 5. Then set them to the position
for "hammering only" or "rotation only".
Bit angle
(when chipping, scaling or demolishing)
Important:
Always be sure that the tool is switched off and
unplugged before changing the bit angle.
The bit can be secured at 12 different angles. To change
the bit angle, depress the lock button and rotate the
change lever so that the pointer points to the
Turn the bit to the desired angle. (Fig. 10)
Depress the lock button and rotate the change lever so
that the pointer points to the
Then make sure that the bit is securely held in place by
turning it slightly. (Fig. 11)
Side grip (Fig. 12)
CAUTION:
• Always use the side grip to ensure operating safety
when drilling in concrete, masonry, etc.
• When the bit begins to break through concrete or if the
bit strikes reinforcing rods embedded in concrete, the
tool may react dangerously. Maintain good balance and
safe footing while holding the tool firmly with both
hands to prevent dangerous reaction.
The side grip swings around to either side, allowing easy
handling of the tool in any position. Loosen the side grip
by turning it counterclockwise, swing it to the desired
position and then tighten it by turning clockwise.
Switch action (Fig. 13)
CAUTION:
Before plugging in the tool, always check to see that the
switch trigger actuates properly and returns to the "OFF"
position when released.
To start the tool, simply pull the trigger. Release the trig-
ger to stop.
Speed change (Fig. 14)
The revolutions and blows per minute can be adjusted
just by turning the adjusting dial. The dial is marked 1
(lowest speed) to 6 (full speed). Refer to the table below
for the relationship between the number settings on the
adjusting dial and the revolutions/blows per minute.
symbol is aligned with the
O
symbol.
g
symbol.
Number on Revolutions per
adjusting dial
6
5
4
3
2
1
Hammer drilling operation (Fig. 15)
CAUTION:
When the bit begins to break through concrete or if the
bit strikes reinforcing rods embedded in concrete, the tool
may react dangerously. Maintain good balance and safe
footing while holding the tool firmly with both hands to
prevent dangerous reaction.
Set the change lever and the shift lever to the
Position the bit at the location for the hole, then pull the
trigger. Do not force the tool. Light pressure gives best
results. Keep the tool in position and prevent it from slip-
ping 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 from the hole. By repeating this several
times, the hole will be cleaned out.
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.
Chipping/Scaling/Demolition (Fig. 16)
Set the change lever and the shift lever to the
Hold the tool firmly with both hands. Turn the tool on and
apply slight pressure on the tool so that the tool will not
bounce around, uncontrolled. Pressing very hard on the
tool will not increase the efficiency.
Drilling operation (Fig. 17)
Use the optional drill chuck assembly. When installing it,
refer to "Installing or removing drill bit" described on the
previous page. You can drill up to 13 mm diameter in
metal and up to 30 mm diameter in wood.
Set the change lever and the shift lever to the
• 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 drilling.
Use a cutting lubricant when drilling metals. The excep-
tion is brass which should be drilled dry.
Blows per
minute minute
720 3,300
690 3,150
590 2,700
490 2,250
390 1,800
360 1,650
h
g
symbol.
symbol.
symbol.
7