Makita HR2800 Manuel D'instruction page 8

Do not apply more pressure when the hole becomes
clogged with chips or particles. Instead, run the tool at
an idle, then remove the bit partially from the hole. By
repeating this several times, the hole will be cleaned out
and normal drilling may be resumed.
CAUTION:
There is a tremendous and sudden twisting force
•
exerted on the tool/bit at the time of hole
break-through, when the hole becomes clogged
with chips and particles,
reinforcing rods embedded in the concrete. Always
use the side grip (auxiliary handle) and firmly hold
the tool by both side grip and switch handle during
operations. Failure to do so may result in the loss
of control of the tool and potentially severe injury.
NOTE:
Eccentricity in the bit rotation may occur while operating
the tool with no load. The tool automatically centers itself
during operation. This does not affect the drilling
precision.
Blow-out bulb (optional accessory)
002449
After drilling the hole, use the blow-out bulb to clean the
dust out of the hole.
Chipping/Scaling/Demolition
For models HR2810, HR2810T, HR2811F, HR2811FT
only
008214
Set the action mode changing knob to the
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.
or when striking
1. Blow-out bulb
1
symbol.
Drilling in wood or metal
1
2
004223
1
007944
1
2
3
007945
1
2
004224
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
8
1. Chuck adapter
2. Keyless drill
chuck
1. Quick change
chuck for
SDS-plus
2. Change cover
line
3. Change cover
3
2
1. Spindle
2. Quick change
drill chuck
3. Change cover
line
4. Change cover
4
1. Sleeve
2. Ring
3. Quick change
drill chuck
3