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Makita HR1820 Manual

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ENGLISH
Explanation of general view
1 Key groove
2 Red dot
3 Change ring
4 Wing bolt
5 Depth gauge
6 Push rod
7 Change lever
8 Speed control screw
9 Switch trigger
10 Dust collector
11 Metal retainer
12 Drill chuck
13 Drill holder
14 Screwdriver
15 Brush holder cap
16 Lock nut wrench
17 Crank cap
18 Hammer grease
SPECIFICATIONS
Model HR1820 HR2510
Capacities
Wood .................................................................................................................. 15 mm 30 mm
Steel ................................................................................................................... 10 mm 13 mm
Concrete ............................................................................................................. 18 mm 25 mm
No load speed (min
–1
) ........................................................................................... 0 – 1,000 0 – 800
Blows per minute ................................................................................................... 0 – 3,500 0 – 3,000
Overall length ........................................................................................................ 321 mm 330 mm
Net weight ............................................................................................................. 3.1 kg 4.2 kg
•
Due to our continuing program of research and
development, the specifications herein are subject
to change without notice.
•
Note: Specifications may differ from country to
country.
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 Euro-
pean 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.
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 tool is designed
to produce vibration. The screws can come
loose easily, causing a breakdown or accident.
Check tightness of screws carefully before
operation.
4. In cold weather or when the tool has not been
used for a long time, let the tool warm up for
several minutes by operating it under no load.
This will loosen up the lubrication. Without
proper warm-up, hammering operation is dif-
ficult.
5. Always be sure you have a firm footing.
Be sure no one is below when using the tool in
high locations.
6. Hold the tool firmly with both hands.
7. Keep hands away from moving parts.
8. Do not leave the tool running. Operate the tool
only when hand-held.
9. Do not point the tool 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 TOOL!
Hold the tool by the insulated grasping sur-
faces 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
Bit grease
Coat the bit shank head beforehand with a small
amount (about 0.5–1g) of bit grease. This chuck
lubrication assures smooth action and longer service
life.
Installing or removing drill bit (Fig. 1)
Important:
Always be sure that the tool is switched off and
unplugged before installing or removing the bit.
To install the bit, press the change ring in the direction
of the arrow, align the key groove in the bit shank with
the red dot and insert the bit. Now release the change
ring. If the change ring does not return to its original
position easily, turn the bit slightly in either direction.
To remove the bit, press the change ring in the
direction of the arrow and the bit will slip out.
5
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