Dear Customer,
Thank you for the trust you have placed in us by buying a Metabo power tool. Each Metabo power tool
is carefully tested and subject to strict quality controls by Metabo's quality assurance. Nevertheless, the
service life of a power tool depends to a great extent on you. Please observe the information contained
in these instructions and the enclosed documentation. The more carefully you treat your Metabo power
tool, the longer it will provide dependable service.
Contents
1 Declaration of Conformity
2 Specified Use
3 General Safety Instructions
4 Special Safety Instructions
5Overview
6 Special Product Features
7 Commissioning
7.1 Assembly of the bow handle or additional handle
The KHE 56 is designed for hammer drilling and
chiselling in concrete, bricks, stone and similar
materials when used in combination with appropriate accessories.
The MHE 56 is designed for chiselling in concrete,
bricks, stone and similar materials when used in
combination with appropriate accessories.
The user bears sole responsibility for damage
caused by improper use.
Generally accepted accident prevention regulations and the enclosed safety information must be
observed.
3General Safety Instructions
WARNING Read all safety warnings and
instructions.
ings and instructions may result in electric shock,
fire and/or serious injury.
Keep all safety instructions and information for
future reference.
Before using this power tool, carefully read
through and familiarise yourself with all the
enclosed safety information (red booklet)
and the instructions. Keep all enclosed documentation for future reference, and pass on your power
tool only together with this documentation.
Failure to follow all safety warn-
1Declaration of Conformity
We, being solely responsible, hereby declare that
this product conforms to the standards and directives specified on page 2.
MHE 56: 2000/14/EC: Procedure for assessing
conformity as per Appendix VI. (Testing centre:
VDE Testing and Certification Institute, Merianstr.
28, 63069 Offenbach, Germany).
4Special Safety Instructions
For your own protection and for the
protection of your power tool pay
attention to all parts of the text that
are marked with this symbol!
Wear ear protectors.
cause loss of hearing.
Use the additional handles supplied with the
tool.
Loss of control can lead to injuries.
Hold the power tool by insulated gripping
surfaces when performing an operation where
the cutting accessory may contact hidden
Exposure to noise can
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wiring or its own cord.
contacting a "live" wire may make exposed metal
parts of the power tool "live" and shock the operator.
Pull the plug out of the plug socket before any
adjustments or servicing are performed.
Always work with the additional handle correctly
installed.
Always hold the machine with both hands using
the handles provided, stand securely and concentrate.
Always wear protective goggles, gloves, a dust
mask and sturdy shoes when working with this
tool.
Ensure that the spot where you wish to work is free
of
power cables, gas lines or water pipes
using a metal detector).
Always work with the tool attached correctly. Pull
on the tool to check that it is seated correctly. (It
must be possible to move the tool a few centimetres in an axial direction.)
When working above ground level, make sure that
the area underneath is free.
Do not touch the tool or parts close to the tool
immediately after stopping work because they
may still be extremely hot and could cause skin
burns.
Always lay the power cable away from the back of
the machine.
A damaged or cracked additional handle must be
replaced. Never operate a machine with a defective additional handle.
• Service indicator e.g. for signalling pending
carbon brush changes and light signal for mains
power supply
7Commissioning
Before plugging in, check to see that the
rated mains voltage and mains frequency,
as stated on the rating label, match with your
power supply.
Always use an extension cable with a minimum
diameter of 1.5 mm
suitable for the machine power rating (see Technical Specifications). If using a roll of cable, always
roll up the cable completely.
7.1Assembly of the bow handle or addi-
tional handle
For safety reasons, always use the bow
handle (2) or additional handle (3)
supplied.
MHE 56:
Release the clamping ring by turning the clamping
knob (1) anticlockwise. Adjust the bow handle (2)
to the required position and angle. Tighten the
clamping knob.
KHE 56:
Option 1
Open the clamping ring by turning the additional
handle (3) anticlockwise. Secure the additional
handle at the required angle. Tighten the additional
handle.
2
. The extension cable must be
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Option 2
Upright working position for reduced stress on the
back when working on floors:
The additional handle (3) can also be attached to
the motor housing. Unscrew the additional handle
from the handle holder (4), insert in one of the
threads (9) (on the left and right of the motor
housing) by hand and tighten.
8Use
8.1Adjusting the depth stop
56)
Press and hold the clamp lever (5). Set the depth
stop (6) to the required drilling depth and release
the clamp lever.
(only for KHE
When a chisel is fitted, only operate the
machine in the chiselling operating
mode .
8.5Adjusting the impact force
Slide the switch (15) to adjust the
(and speed)
The correct setting depends on the task in hand.
Example: set the switch to "reduced impact force"
when working on soft, brittle material or trying to
minimise break-off.
Set the switch to "high impact force" when
working on harder materials.
setting.
Reduced impact force,
reduced speed
High impact force,
high speed
impact force
8.2Attaching and removing tools
Before fitting tools, clean shank and apply
special grease enclosed with tool (accessories order no. 6.31800)! Use only SDS-max
tools.
Attaching tools:
Turn tool and insert until it engages. The tool is
automatically locked.
Pull on the tool to check that it is seated
correctly.
tool a few centimetres in an axial direction.)
Removing the tool:
Pull tool lock (7) backwards in direction indicated
by arrow (a) and remove tool (b).
8.3Setting the operating mode
Turn the switch button (8) to select the desired
operating mode.
Hammer drilling (only for KHE 56)
Chiselling
When a chisel is fitted, only operate the
machine in the chiselling operating
mode
.
8.4Adjusting the chisel position
The chisel can be secured in 12 different positions.
- Insert the chisel.
- Turn the switch button (8) to position .
- Turn the chisel to the required position.
- Turn the switch button (8) to position .
- Turn the chisel until it engages.
(It must be possible to move the
8.6Switching On and Off
Instantaneous activation:
To start the machine, press the trigger switch (12).
Release the trigger (12) to switch off.
Continuous operation:
For continuous operation, the trigger switch (12)
can be locked using the lock button (11).
Press and release the trigger (12) again to switch
off.
In continuous operation, the machine
continues running if it is forced out of your
hands. Therefore, always hold the machine
with both hands using the handles provided,
stand in a safe position and concentrate.
8.7Metabo VibraTech (MVT)
For reduced vibrations and less stress on the
hands.
Always apply a moderate amount of pressure to
the handle when pushing down the machine and
do not force. Vibrations are reduced most effectively at the central position (10).
9Cleaning, Maintenance
Motor cleaning: blow out the machine thoroughly
at regular intervals through the air slots with
compressed air.
10 Tips and Tricks
Only moderate pressure is required when working
with the machine. Applying excessive pressure
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does not increase your working performance and
may decrease the service life of your machine.
KHE 56: in the case of deep bores, pull the drill bit
out of the bore from time to time in order to remove
dust.
11 Troubleshooting
Only for EU countries: Never dispose of
power tools in your household waste! In
accordance with European Guideline 2002/
96/EC on used electronic and electric equipment
and its implementation in national legal systems,
used power tools must be collected separately
and handed in for environmentally compatible
recycling.
Carbon brush service indicator (13) lights up:
the carbon brushes are almost completely worn
(remaining operating time approx. 30 hours). If the
brushes are completely worn, the machine
switches off automatically. Have an authorised
service centre replace the brushes.
Electromagnetic disturbances:
In individual cases, the speed may fluctuate
temporarily if the machine is exposed to extreme
external electromagnetic disturbances.
12 Accessories
Use only genuine Metabo accessories.
If you need any accessories, check with your
dealer.
For dealers to select the correct accessory, they
need to know the exact model designation of your
power tool.
See page 4.
A Extensive drill bit and chisel assortment for a
wide range of applications.
B Special grease (for lubricating the tool shanks)
For a complete range of accessories, see
www.metabo.com or the main catalogue.
15 Technical Specifications
Explanatory notes on the specifications on page 2.
Changes due to technological progress reserved.
P
1
P
2
n
1
D
1
D
2
D
3
s
max
W= Single impact force
C= Number of chisel positions
m= Weight without mains cable
Vibration total value (vector sum of three
directions) determined in accordance with
EN 60745:
a
h, HD
a
h, Cheq
K
h,HD/Cheq
= Nominal power input
= Power output
= No-load speed
= Max. drilling diameter in concrete
with impact masonry bits
= Max. drilling diameter in concrete
with impact core cutters
= Max. drilling diameter in concrete
with milling cutter
= Maximum impact rate
= Vibration emission value
(hammer drilling into concrete)
= Vibration emission value
(chiselling)
= Uncertainty (vibration)
13 Repairs
Repairs to electrical tools must be carried out by
qualified electricians ONLY!
Any Metabo power tool in need of repair can be
sent to one of the addresses listed in the spare
parts list.
Please enclose a description of the fault with the
power tool.
14 Environmental Protection
Metabo's packaging can be 100% recycled.
Scrap power tools and accessories contain large
amounts of valuable resources and plastics that
can be recycled.
These instructions are printed on chlorine-free
bleached paper.
12
WARNING
The vibration emission level given in this information sheet has been measured in accordance with
a standardized test given in EN 60745 and may
be used to compare one tool with another.
The vibration emission level will vary because
of the ways in which a power tool can be used
and may increase above the level given in this
information sheet. This could lead to a significant
underestimate of exposure when the tool is used
regularly in such a way.
Note:
To be accurate, an estimation of the level of
exposure to vibration experienced during a given
period of work should also take into account the
times when the tool is switched off and when it is
running but not actually doing the job. This may
significantly reduce the exposure level over the
total working period.