Maintenance - Makita HR2451 Instruction Manual

bounce around, uncontrolled. Pressing very hard on the
tool will not increase the efficiency.
Drilling in wood or metal
1
Use the optional drill chuck assembly. When installing it,
refer to "Installing or removing the bit" described on the
previous page.
Set the action mode changing knob to the
You can drill up to 13 mm(1/2") diameter in metal and up
to 32 mm(1-1/4") diameter in wood.
CAUTION:
• Never use "rotation with hammering" when the drill
chuck assembly is installed on the tool. The drill
chuck assembly may be damaged.
Also, the drill chuck will come off when reversing
the tool.
• Pressing excessively on the tool will not speed up
the drilling. In fact, this excessive pressure will only
serve to damage the tip of your bit, decrease the
tool performance and shorten the service life of the
tool.
• There is a tremendous twisting force exerted on the
tool/bit at the time of hole breakthrough. Hold the
tool firmly and exert care when the bit begins to
break through the workpiece.
• A stuck bit can be removed simply by setting the
reversing switch to reverse rotation in order to back
out. However, the tool may back out abruptly if you
do not hold it firmly.
• Always secure small workpieces in a vise or similar
hold-down device.
• When performing diamond core drilling operations,
always set the change lever to the
use "rotation only" action. If performing diamond
core drilling operations
hammering" action, the diamond core bit may be
damaged.
001303
1. Drill chuck
assembly
symbol.
position to
using "rotation

MAINTENANCE

CAUTION:
• Always be sure that the tool is switched off and
unplugged before attempting to perform inspection
or maintenance.
To maintain product SAFETY and RELIABILITY, repairs,
carbon brush inspection and replacement, any other
maintenance or adjustment should be performed by Mak-
ita Authorized or Factory Service Centers, always using
Makita replacement parts.
ACCESSORIES
CAUTION:
• These
recommended for use with your Makita tool
specified in this manual. The use of any other
accessories or attachments might present a risk of
injury to
attachment for its stated purpose.
If you need any assistance for more details regarding
these accessories, ask your local Makita Service Center.
• SDS-Plus Carbide-tipped bits
• Bull point
• Cold chisel
• Drill chuck assembly
• Drill chuck S13
• Chuck adapter
• Chuck key S13
• Bit grease
• Depth gauge
• Blow-out bulb
• Dust cup
• Dust extractor attachment
• Safety goggles
• Plastic carrying case
• Scaling chisel
• Grooving chisel
• Core bit
• Side grip
• Keyless drill chuck
with
8
accessories or attachments
persons. Only use
are
accessory or