Demolition Hammer
H 41
Handling Instructions
Read through carefully and understand these instructions before use.
904
Code No. C99127433 M
Printed in Malaysia
Hitachi Koki Co., Ltd.
806
Code No. C99127433 M
Printed in Malaysia
1
1
2
3
4
5
6
7
8
Tool shank
Slide grip
Front cover
Crank cover
Wear limit
No. of carbon brush
Usual carbon brush
Auto-stop carbon brush
1
3
2
4
6a
743 6
873 7
211
45
6
amm
17mm
1
1
2
3
4
5
6
7
8
Tool shank
Slide grip
Front cover
Crank cover
Wear limit
No. of carbon brush
Usual carbon brush
Auto-stop carbon brush
1
3
2
4
6a
743 6
873 7
211
45
6
amm
17mm
3
GENERAL OPERATIONAL PRECAUTIONS
WARNING! When using electric tools, basic safety
precautions should always be followed to reduce the
risk of fire, electric shock and personal injury, including
the following.
Read all these instructions before operating this product
and save these instructions.
For safe operations:
1. Keep work area clean. Cluttered areas and benches
invite injuries.
2. Consider work area environment. Do not expose
power tools to rain. Do not use power tools in
damp or wet locations. Keep work area well lit.
Do not use power tools where there is risk to
cause fire or explosion.
3. Guard against electric shock. Avoid body contact
with earthed or grounded surfaces. (e.g. pipes,
radiators, ranges, refrigerators).
4. Keep children and infirm persons away. Do not
let visitors touch the tool or extension cord. All
visitors should be kept away from work area.
5. Store idle tools. When not in use, tools should
be stored in a dry, high or locked up place, out
of reach of children and infirm persons.
6. Do not force the tool. It will do the job better and
safer at the rate for which it was intended.
7. Use the right tool. Do not force small tools or
attachments to do the job of a heavy duty tool.
Do not use tools for purposes not intended; for
example, do not use circular saw to cut tree limbs
or logs.
8. Dress properly. Do not wear loose clothing or
jewelry, they can be caught in moving parts.
Rubber gloves and non-skid footwear are
recommended when working outdoors. Wear
protecting hair covering to contain long hair.
9. Use eye protection. Also use face or dust mask
if the cutting operation is dusty.
10. Connect dust extraction equipment.
If devices are provided for the connection of dust
extraction and collection facilities ensure these are
connected and properly used.
11. Do not abuse the cord. Never carry the tool by
the cord or yank it to disconnect it from the
receptacle. Keep the cord away from heat, oil and
sharp edges.
12. Secure work. Use clamps or a vise to hold the
work. It is safer than using your hand and it frees
both hands to operate tool.
13. Do not overreach. Keep proper footing and balance
at all times.
14. Maintain tools with care. Keep cutting tools sharp
and clean for better and safer performance. Follow
instructions for lubrication and changing
accessories. Inspect tool cords periodically and if
damaged, have it repaired by authorized service
center. Inspect extension cords periodically and
replace, if damaged. Keep handles dry, clean, and
free from oil and grease.
15. Disconnect tools. When not in use, before servicing,
and when changing accessories such as blades,
bits and cutters.
16. Remove adjusting keys and wrenches. Form the
habit of checking to see that keys and adjusting
wrenches are removed from the tool before turning
it on.
17. Avoid unintentional starting. Do not carry a
plugged-in tool with a finger on the switch. Ensure
switch is off when plugging in.
18. Use outdoor extension leads. When tool is used
outdoors, use only extension cords intended for
outdoor use.
19. Stay alert. Watch what you are doing. Use common
sense. Do not operate tool when you are tired.
20. Check damaged parts. Before further use of the
tool, a guard or other part that is damaged should
be carefully checked to determine that it will
operate properly and perform its intended function.
Check for alignment of moving parts, free running
of moving parts, breakage of parts, mounting and
any other conditions that may affect its operation.
A guard or other part that is damaged should be
properly repaired or replaced by an authorized
service center unless otherwise indicated in this
handling instructions. Have defective switches
replaced by an authorized service center. Do not
use the tool if the switch does not turn it on and
off.
21. Warning
The use of any accessory or attachment, other
than those recommended in this handling
instructions, may present a risk of personal injury.
22. Have your tool repaired by a qualified person.
This electric tool is in accordance with the relevant
safety requirements. Repairs should only be carried
out by qualified persons using original spare parts.
Otherwise this may result in considerable danger
to the user.
PRECAUTIONS ON USING DEMOLITION
HAMMER
1. Wear earplugs to protect your ears during
operation.
2. Do not touch the tool during or immediately after
operation. The tool becomes very hot during
operation and could cause serious burns.
3. Before starting to break, chip or drill onto a wall,
floor or ceiling, thoroughly confirm that such items
as electric cables or conduits are not buried inside.
Voltage (by areas)* (110V, 115V, 120V, 127V, 220V, 230V, 240V)
Input 1050W*
Full-Load Impact Rate 3000/min.
Weight 5.6kg (without cord, side handle)
SPECIFICATIONS
* Be sure to check the nameplate on product as it is subject to change by areas.
4
STANDARD ACCESSORIES
1. Case ............................................................................. 1
2. Bull Point .................................................................... 1
3. Side Handle ................................................................ 1
Standard accessories are subject to change without
notice.
OPTIONAL ACCESSORIES (sold separately)
NOTE:
The round type bit with a collar cannot be attached.
䢇Crushing
(1) Bull point
Total length: 280, 450 mm
䢇Syringe (for chip removal)
䢇HITACHI Electric Hammer Grease A
500g (in a can)
30g (in a tube)
APPLICATIONS
Breaking concrete, chipping off concrete, grooving, bar
cutting, and driving piles.
Application examples:
lnstallation of piping and wiring, sanitary facility
installation, machinery installation, water supply and
drainage work, interior jobs, harbor facilities and other
civil engineering work.
PRIOR TO OPERATION
1. Power source
Ensure that the power source to be utilized conforms
to the power requirements specified on the product
nameplate.
2. Grounding
This tool should be grounded while in use to protect
the operator from electric shock. The tool is equipped
with a three-conductor cord and grounding type
plug to fit the proper grounding type receptacle.
The green (or green and yellow) conductor in the
cord is the grounding wire. Never connect the green
(or green and yellow) wire to a live terminal.
3. Power switch
Ensure that the power switch is in the OFF position.
If the plug is connected to a power receptacle while
the power switch is in the ON position, the power
tool will start operating immediately, which could
cause a serious accident.
4. Extension cord
When the work area is removed from the power
source, use an extension cord of sufficient thickness
and rated capacity. The extension cord should be
kept as short as practicable.
5. Installing tools
CAUTION:
Be sure to switch power OFF and disconnect the
plug from the receptacle to avoid serious trouble.
NOTE:
Concerning the tools such as bull points and cutters,
be sure to use separately sold genuine parts that
are designated by HITACHI.
(1) Wipe off and clean up the shank section of the tool,
and apply grease or machine oil onto it.
(2) Insert the shank section of the tool completely into
the hexagonal hole of the front cover at a state
where the slide grip is fully pulled in the direction
of as shown in Fig. 1.
(3) Return the slide grip to its home position and make
sure that the tool is pulled and locked securely.
(4) Removal is carried out at a state where the slide
grip is fully pulled in the direction of in a manner
similar to the case of installing the tool.
CAUTION:
Be sure to grip the handle and side handle during
work. Do not hold by the slide grip during work:
If you pull it by mistake, the bull point could jump
out.
HOW TO USE THE DEMOLITION HAMMER (Fig. 2)
1. After placing the tip of the tool in the base hole,
switch ON.
2. By utilizing the weight of the machine and by firmly
holding the demolition hammer with both hands,
one can effectively control the subsequent recoil
motion.
Proceed at a moderate work-rate, the use of too much
force will impair efficiency.
HOW TO REPLACE GREASE
This machine is of full air-tight construction to protect
against dust and to prevent lubricant leakage. Therefore,
the machine can be used without lubrication for long
periods. Replace the grease as described below.
1. Grease Replacement Period
After purchase, replace grease after every 6 months
of usage. Ask for grease replacement at the nearest
authorized Hitachi Service Agent. Proceed for
replacement of grease.
2. Grease Replacement
CAUTION:
Before replacing the grease, turn the power off and
pull out the power plug.
(1) Remove the crank cover and wipe off the grease
inside. (Fig. 3)
(2) Supply 10g of Hitachi Electric Hammer Grease A
to the crank case.
(3) After replacing the grease, install the crank case
securely.
NOTE
The Hitachi Electric Hammer Grease A is of the low
viscosity type. When the grease is consumed, purchase
from an authorized Hitachi Service Agent.
HiKOKI
HiKOKI.
HiKOKI
HiKOKI
HiKOKI
HiKOKI
5
MAINTENANCE AND INSPECTION
CAUTION:
Be sure to switch power OFF and disconnect the
plug from the receptacle to avoid serious trouble.
1. Inspecting the tool
Since use of a dull tool will degrade efficiency and
cause possible motor malfunction, sharpen or
replace the tool 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. 4)
The Motor employs carbon brushes which are
consumable parts. When they become worn to or
near the “wear limit”, it could result 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 figure.
In addition, always keep carbon brushes clean and
ensure that they slide freely within the brush holders.
5. Replacement procedure
Loosen the set screw and remove the tail cover.
Remove the brush caps and carbon brushes. After
replacing the carbon brushes, do not forget to tighten
the brush caps properly and to install the tail cover.
NOTE
Due HITACHI’s continuing program of research and
development, the specifications herein are subject to
change without prior notice.
HiKOKI's
6
7
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HiKOKI
8
HiKOKI
HiKOKI
HiKOKI
HiKOKI
Demolition Hammer
H 41
Handling Instructions
Read through carefully and understand these instructions before use.
904
Code No. C99127433 M
Printed in Malaysia
Hitachi Koki Co., Ltd.
806
Code No. C99127433 M
Printed in Malaysia
/