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English
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max Drilling diameter, max.
kg
Weight
(According to EPTA-Procedure 01/2014)
Concrete
Steel
Wood
Hammering only function
Rotation only function
Rotation and hammering function
Switching ON
Switching OFF
Disconnect mains plug from electrical outlet
Class II tool
STANDARD ACCESSORIES
In addition to the main unit (1 unit), the package
contains the accessories listed in the below.
Plastic case ................................................................ 1
Side handle ................................................................. 1
Depth gauge .............................................................. 1
Standard accessories are subject to change without notice.
APPLICATIONS
Rotation and hammering function
Drilling anchor holes
Drilling holes in concrete
Drilling holes in tile
Rotation only function
Drilling in steel or wood
(with optional accessories)
Tightening machine screws, wood screws
(with optional accessories)
Hammering only function
Light-duty chiselling of concrete, groove digging and
edging.
SPECIFICATIONS
The speci cations of this machine are listed in the Table on
page 95.
NOTE
Due to HiKOKI’s continuing program of research and
development, the speci cations herein are subject to
change without prior notice.
MOUNTING AND OPERATION
Action Figure Page
Inserting SDS-plus drilling tools 1 96
Removing SDS-plus drilling tools 2 96
Selecting rotation direction 3 96
Selecting the operating mode 4 96
Adjusting the drilling depth 5 96
Changing the chisel position 6 96
Switching on and o and setting
the speed 797
Replacing carbon brushes 8 97
Installing the side handle 10 98
Selecting accessories* 99, 100
* For detailed information regarding each tool, contact a
HiKOKI authorized service center.
LUBRICATION
Low viscosity grease is applied to this rotary hammer so that
it can be used for a long period without replacing the grease.
Replace the grease whenever you change the carbon brush
to maintain the service life.
Further use of the rotary hammer with lock o grease will
cause the machine to seize up reduce the service life.
CAUTION
A special grease is used with this machine, therefore,
the normal performance of the machine may be badly
a ected by use of other grease. Please be sure to let
one of our service agents undertake replacement of the
grease.
MAINTENANCE AND INSPECTION
1. Inspecting the drill bits
Since use of a dull tool will cause motor malfunctioning
and degraded e ciency, replace the drill bit with new
ones or resharpen them without delay when abrasion is
noted.
2. Inspecting the mounting screws
Regularly inspect all mounting screws and ensure that
they are properly tightened. Should any of the screws be
loose, retighten them immediately. Failure to do so could
result in serious hazard.
3. Maintenance of the motor
The motor unit winding is the very “heart” of the power
tool.
Exercise due care to ensure the winding does not
become damaged and/or wet with oil or water.
4. Inspecting the carbon brushes (Fig. 8)
The Motor employs carbon brushes which are
consumable parts. When they become worn to or near
the “wear limit” , it results in motor trouble.
When an auto-stop carbon brush is equipped, the motor
will stop automatically. At that time, replace both carbon
brushes with new ones which have the same carbon
brush Numbers shown in the Fig. 8. In addition,
always keep carbon brushes clean and ensure that they
slide freely within the brush holders.
00BookDH28PCEU.indb400BookDH28PCEU.indb4 2022/12/0616:38:122022/12/0616:38:12
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