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Makita HR2451 Manual

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ENGLISH
Explanation of general view
1 Switch trigger
2 Lock button
3Lamp
4 Reversing switch lever
5 Quick change chuck for SDS-
plus
6 Change cover line
7 Change cover
8 Quick change drill chuck
9Spindle
10 Rotation with hammering
11 Action mode changing knob
12 Rotation only
13 Hammering only
14 Grip base
15 Side grip
16 Loosen
17 Teeth
18 Protrusion
19 Tighten
20 Bit shank
21 Bit grease
22 Bit
23 Chuck cover
24 Depth gauge
25 Dust cup
26 Blow-out bulb
27 Chuck adapter
28 Keyless drill chuck
29 Sleeve
30 Ring
SPECIFICATIONS
Model HR2450/X/F/HR2451 HR2450T/FT
Capacities
Concrete
Tungsten-carbide tipped bit......................................24 mm 24 mm
Core bit ....................................................................54mm 54mm
Diamond core bit......................................................65mm 65mm
Steel ...........................................................................13 mm 13mm
Wood ..........................................................................32 mm 32mm
No load speed (min
–1
)...................................................0 – 1,100 0– 1,100
Blows per minute...........................................................0 – 4,500 0 – 4,500
Overall length ................................................................360 mm 384 mm
Net weight......................................................................2.7 kg 2.9 kg
Safety class ................................................................... /II /II
• Due to our continuing programme of research and
development, the specifications herein are subject to
change without notice.
• Specifications may differ from country to country.
• Weight according to EPTA-Procedure 01/2003
Intended use
The tool is intended for hammer drilling and drilling in
brick, concrete and stone as well as for chiselling work.
It is also suitable for drilling without impact in wood,
metal, ceramic and plastic.
Power supply
The tool should be connected only to a power supply of
the same voltage as indicated on the nameplate, and can
only be operated on single-phase AC supply. They are
double-insulated in accordance with European Standard
and can, therefore, also be used from sockets without
earth wire.
Safety hints
For your own safety, please refer to the enclosed safety
instructions.
SPECIFIC SAFETY RULES
GEB007-5
DO NOT let comfort or familiarity with product
(gained from repeated use) replace strict adherence
to rotary hammer safety rules. If you use this tool
unsafely or incorrectly, you can suffer serious
personal injury.
1. Wear ear protectors. Exposure to noise can cause
hearing loss.
2. Use auxiliary handle(s), if supplied with the tool.
Loss of control can cause personal injury.
3. Hold power tools by insulated gripping surfaces,
when performing an operation where the cutting
accessory may contact hidden wiring or its own
cord. Cutting accessory contacting a “live” wire may
make exposed metal parts of the power tool “live”
and could give the operator an electric shock.
4. Wear a hard hat (safety helmet), safety glasses
and/or face shield. Ordinary eye or sun glasses
are NOT safety glasses. It is also highly
recommended that you wear a dust mask and
thickly padded gloves.
5. Be sure the bit is secured in place before
operation.
6. Under normal operation, the tool is designed to
produce vibration. The screws can come loose
easily, causing a breakdown or accident. Check
tightness of screws carefully before operation.
7. In cold weather or when the tool has not been
used for a long time, let the tool warm up for a
while by operating it under no load. This will
loosen up the lubrication. Without proper warm-
up, hammering operation is difficult.
8. Always be sure you have a firm footing.
Be sure no one is below when using the tool in
high locations.
9. Hold the tool firmly with both hands.
10. Keep hands away from moving parts.
11. Do not leave the tool running. Operate the tool
only when hand-held.
12. Do not point the tool at any one in the area when
operating. The bit could fly out and injure some-
one seriously.
13. Do not touch the bit or parts close to the bit
immediately after operation; they may be
extremely hot and could burn your skin.
… 5 …


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