Makita HR2800 Instruction Manual page 7

Changing the quick change chuck for
SDS-plus
For model HR2810T, HR2811FT
The quick change chuck for SDS-plus can be easily
exchanged for the quick change drill chuck.
Removing the quick change chuck for SDS-plus
Fig.4
CAUTION:
Before removing the quick change chuck for
•
SDS-plus, always remove the bit.
Grasp the change cover of the quick change chuck for
SDS-plus and turn in the direction of the arrow until the
change cover line moves from the
symbol. Pull forcefully in the direction of the arrow.
Attaching the quick change drill chuck
Fig.5
Check the line of the quick change drill chuck shows the
symbol. Grasp the change cover of the quick change
drill chuck and set the line to the
Place the quick change drill chuck on the spindle of the
tool.
Grasp the change cover of the quick change drill chuck
and turn the change cover line to the
click can clearly be heard.
Selecting the action mode
For Model HR2800
Fig.6
This tool employs an action mode changing knob. Select
one of the two modes suitable for your work needs by
using this knob.
For rotation only, turn the knob so that the arrow on the
knob points toward the
For rotation with hammering, turn the knob so that the
arrow on the knob points toward the
body.
CAUTION:
Always set the knob fully to your desired mode
•
symbol. If you operate the tool with the knob
positioned halfway between the mode symbols, the
tool may be damaged.
Use the knob after the tool comes to a complete
•
stop.
For models HR2810, HR2810T, HR2811F, HR2811FT
Rotation with hammering
Fig.7
For drilling in concrete, masonry, etc., rotate the action
mode changing knob to the
tungsten-carbide tipped bit.
Rotation only
Fig.8
For drilling in wood, metal or plastic materials, lock
button and rotate the action mode changing knob to the
symbol. Use a twist drill bit or wood bit.
symbol to the
symbol.
symbol until a
symbol on the tool body.
symbol on the tool
symbol. Use a
Hammering only
Fig.9
For chipping, scaling or demolition operations, rotate the
action mode changing knob to the
bull point, cold chisel, scaling chisel, etc.
CAUTION:
Do not rotate the action mode changing knob when
•
the tool is running under load. The tool will be
damaged.
To avoid rapid wear on the mode change
•
mechanism, be sure that the action mode
changing knob is always positively located in one
of the three action mode positions.
Torque limiter
The torque limiter will actuate when a certain torque
level is reached. The motor will disengage from the
output shaft. When this happens, the bit will stop turning.
CAUTION:
As soon as the torque limiter actuates, switch off
•
the tool immediately. This will help prevent
premature wear of the tool.
Bits such as hole saw, which tend to pintch or
•
catch easily in the hole, are not appropriate for this
tool. This is because they will cause the torque
limiter to actuate too frequently.
ASSEMBLY
CAUTION:
Always be sure that the tool is switched off and
•
unplugged before carrying out any work on the
tool.
Side grip (auxiliary handle)
Fig.10
CAUTION:
Always use the side grip to ensure operating
•
safety.
Install the side grip so that the teeth on the grip fit in
between the protrusions on the tool barrel. Then tighten
the grip by turning clockwise at the desired position. It
may be swung 360° so as to be secured at any position.
Bit grease
Coat the bit shank head beforehand with a small amount
of bit grease (about 0.5 - 1 g).
This chuck lubrication assures smooth action and longer
service life.
Installing or removing the bit
Fig.11
Clean the bit shank and apply bit grease before installing
the bit.
7
symbol. Use a