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Makita HR2420 Manual

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ENGLISH
Explanation of general view
1 Side grip (auxiliary handle)
2 Tighten
3 Loosen
4 Bit shank
5 Bit grease
6 Bit
7 Chuck cover
8 Hole
9 Clamp screw
0 Reversing switch lever
q Switch trigger
w Action mode changing knob
e Blow-out bulb
r Dust cup
t Chuck adapter
y Drill chuck
u Chuck key
i Soft jaws
o Wrench
p Screw
SPECIFICATIONS
Model HR2420
Capacities
Concrete ...................................................... 24 mm
Steel ............................................................ 13 mm
Wood ........................................................... 32 mm
No load speed (RPM) ................................ 0 – 1,050
Blows per minute ....................................... 0 – 4,900
Overall length ............................................... 432 mm
Net weight ....................................................... 2.4 kg
•
Due to the continuing program of research and
development, the specifications herein are subject
to change without prior notice.
•
Note: Specifications may differ from country to
country.
Power supply
The machine 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 enclosed safety
instructions.
ADDITIONAL SAFETY RULES
1. Wear a hard hat (safety helmet), safety glasses
and/or face shield. It is also highly recom-
mended that you wear a dust mask, ear pro-
tectors and thickly padded gloves.
2. Be sure the bit is secured in place before
operation.
3. Under normal operation, the machine is
designed to produce vibration. The screws
can come loose easily, causing a breakdown
or accident. Check tightness of screws care-
fully before operation.
4. In cold weather or when the machine has not
been used for a long time, let the machine
warm up for several minutes by operating it
under no load. This will loosen up the lubrica-
tion. Without proper warm-up, hammering
operation is difficult.
5. Always be sure you have a firm footing.
Be sure no one is below when using the
machine in high locations.
6. Hold the machine firmly with both hands.
7. Keep hands away from moving parts.
8. Do not leave the machine running. Operate the
machine only when hand-held.
9. Do not point the machine at any one in the
area when operating. The bit could fly out and
injure someone seriously.
10. When drilling or chipping into walls, floors or
wherever ‘‘live’’ electrical wires may be
encountered, DO NOT TOUCH ANY METAL
PARTS OF THE MACHINE! Hold the machine
by the insulated grasping surfaces to prevent
electric shock if you drill or chip into a ‘‘live’’
wire.
11. Do not touch the bit or parts close to the bit
immediately after operation; they may be
extremely hot and could burn your skin.
SAVE THESE INSTRUCTIONS.
OPERATING INSTRUCTIONS
Side grip (auxiliary handle) (Fig. 1)
The side grip swings around to either side, allowing
easy handling of the machine in any position. Loosen
the side grip by turning it counterclockwise, swing it to
the desired position and then tighten it by turning
clockwise.
Installing or removing drill bit
Important:
Always be sure that the machine is switched off and
unplugged before installing or removing the bit.
Clean the bit shank and apply bit grease before
installing the bit. (Fig. 2)
Insert the bit into the machine. Turn the bit and push
it in until it engages. (Fig. 3)
If the bit cannot be pushed in, remove the bit. Pull the
chuck cover down a couple of times. Then insert the
bit again. Turn the bit and push it in until it engages.
(Fig. 4)
After installing, always make sure that the bit is
securely held in place by trying to pull it out.
To remove the bit, pull the chuck cover down all the
way and pull the bit out.
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