Makita HR2800 Instruction Manual page 9

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 in wood or metal
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► 1. Chuck adapter 2. Keyless drill chuck
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► 1. Quick change chuck for SDS-plus 2. Change
cover line 3. Change cover
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► 1. Spindle 2. Quick change drill chuck 3. Change
cover line 4. Change cover
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► 1. Sleeve 2. Ring 3. Quick change drill chuck
For Model HR2800, HR28010, HR2810F
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 so that the pointer
points to the symbol.
For model HR2810T, HR2811FT
Use the quick change drill chuck as standard equipment.
When installing it, refer to "changing the quick change
chuck for SDS-plus " described on the previous page.
Hold the ring and turn the sleeve counterclockwise to
open the chuck jaws. Place the bit in the chuck as far as
it will go. Hold the ring firmly and turn the sleeve clock-
wise to tighten the chuck. To remove the bit, hold the
ring and turn the sleeve counterclockwise.
Set the action mode changing knob to the
You can drill up to 13 mm diameter in metal and up to
32 mm diameter in wood.
CAUTION:
• Never use "rotation with hammering" when the
quick change drill chuck is installed on the tool.
The quick change drill chuck 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.
Diamond core drilling
When performing diamond core drilling operations, always set
the change lever to the
CAUTION:
• If performing diamond core drilling operations
using "rotation with hammering" action, the
diamond core bit may be damaged.
9 ENGLISH
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symbol.
position to use "rotation only" action.
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