9 Troubleshooting
Fault
Possible cause
Remedy
The power tool doesn’t start.
Interruption in the electric supply.
Plug in another electric appliance and
check whether it works.
Supply cord or plug defective.
Have this checked by a trained elec-
trical specialist and replaced if neces-
sary.
Other electrical fault.
Have this checked by a trained elec-
trical specialist.
The carbon brushes are worn.
Have this checked by a trained elec-
trical specialist and replaced if neces-
sary.
No hammering action.
The power tool is too cold.
Allow the power tool to warm up to
the minimum operating temperature.
See section: 7.2.1 Working at low
temperatures
The function selector switch is set to
“Drilling without hammering”.
Set the function selector switch to
“Hammer drilling”.
The forward/reverse switch is set to
reverse rotation.
Set the forward/reverse switch to for-
ward rotation.
The power tool doesn’t achieve
full power.
The extension cord’s conductor cross
section is inadequate.
Use an extension cord with an ad-
equate conductor cross section.
(Please refer to the “Description” sec-
tion.)
The control switch is not pressed
fully.
Press the control switch as far as it
will go.
The drill bit can’t be released.
The chuck is not pulled back fully.
Pull the chuck back as far as it will go
and remove the insert tool.
The drill bit makes no progress.
The forward/reverse switch is set to
reverse rotation.
Set the forward/reverse switch to for-
ward rotation.
10 Disposal
Most of the materials from which Hilti power tools or appliances are manufactured can be recycled. The materials
must be correctly separated before they can be recycled. In many countries, Hilti has already made arrangements for
taking back your old power tools or appliances for recycling. Please ask your Hilti customer service department or
Hilti representative for further information.
For EC countries only
Disposal of electric tools together with household waste is not permissible.
In observance of the European Directive on waste electrical and electronic equipment and its imple-
mentation in accordance with national law, electrical appliances that have reached the end of their life
must be collected separately and returned to an environmentally compatible recycling facility.
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Printed: 08.07.2013 | Doc-Nr: PUB / 5071130 / 000 / 01