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Disconnect mains plug from electrical outlet
SDS max shank
Class II tool
Prohibited action
STANDARD ACCESSORIES
In addition to the main unit (1 unit), the package contains the
accessories listed in the below.
○ Plastic Case .................................................................1
○ Bull Point (SDS-max shank) .........................................1
○ Side Handle ..................................................................1
Standard accessories are subject to change without notice.
APPLICATIONS
Demolishing concrete, chiseling off concrete, grooving, bar
cutting.
Application examples:
Installation of piping and wiring, sanitary facility installation,
machinery installation, water supply and drainage work,
interior jobs, harbor facilities and other civil engineering
works.
SPECIFICATIONS
The specifi cations of this machine are listed in the Table on
page 5.
NOTE
Due to HiKOKI's continuing program of research and
development, the specifi cations herein are subject to
change without prior notice.
MOUNTING AND OPERATION
Action
Installing the side handle
Inserting SDS-max tools
Removing SDS-max tools
Deciding working position of tool
Switch operation
Locking-on the On / Off switch
Releasing the On / Off switch
How to use the demolition hammer*
Replacing carbon brushes
Selecting accessories
* Operate this Demolition Hammer by utilizing its empty
weight. The performance will not be better even if it is
pressed or thrust forcibly against the work surface.
Hold this Demolition Hammer with a force just suffi cient
to counteract the reaction.
Warming up (Fig. 9)
The grease lubrication system in this unit may require
warming up in cold regions.
Position the end of the bit so makes contact with the
concrete, turn on the switch and perform the warming
up operation. Make sure that a hitting sound is produced
and then use the unit.
GREASE REPLACEMENT
This Demolition Hammer is of full air-tight construction to
protect against dust and to prevent lubricant leakage.
Therefore, this Demolition Hammer can be used without
lubrication for long periods. Replace the grease as described
below.
Grease Replacement Period
After purchase, replace grease after every 6 months of
usage. Ask for grease replacement at the nearest authorized
Service Center.
MAINTENANCE AND INSPECTION
CAUTION
Be sure to switch OFF and disconnect the attachment
plug from the receptacle to avoid a serious accident.
1. Inspecting accessories
Since use of a dull accessory, such as a bull point, a
cutter, etc. will degrade effi ciency and cause possible
motor malfunction, sharpen or replace with a new one as
soon as 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. 10)
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. 10. In addition,
always keep carbon brushes clean and ensure that they
Figure
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slide freely within the brush holders.
5. Replacing carbon brushes (Fig. 10)
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Loosen the two set screws and remove the plate and the
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tail cover. Remove the brush caps and carbon brushes.
After replacing the carbon brushes, do not forget to
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tighten the brush caps securely and to install the plate
and the tail cover.
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6. Replacing supply cord
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If the replacement of the supply cord is necessary, this
has to be done by the manufacturer of this agent in order
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to avoid a safety hazard.
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CAUTION
In the operation and maintenance of power tools, the
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safety regulations and standards prescribed in each
country must be observed.
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