power tool free from oil and grease. Do not use
cleaning agents which contain silicone.
8.3 Maintenance
WARNING
Repairs to the electrical section of the power tool
may be carried out only by trained electrical spe-
cialists.
Check all external parts of the power tool for damage
at regular intervals and check that all controls operate
faultlessly. Do not operate the power tool if parts
are damaged or when the controls do not function
faultlessly. If necessary, the power tool should be
repaired by Hilti Service.
8.4 Checking the power tool after care and
maintenance
After carrying out care and maintenance work on
the power tool, check that all protective and safety
devices are fitted and that they function faultlessly.
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.
The supply cord or plug is defec-
tive.
Have it checked by a trained electri-
cal specialist and replaced if neces-
sary.
The control switch is defective.
Have it checked by a trained electri-
cal specialist and replaced if neces-
sary.
The power tool doesn’t
achieve full power.
The extension cord is too long or
its gauge is inadequate.
Use an extension cord of an ap-
proved length and / or of adequate
gauge.
The control switch is not pressed
fully.
Press the control switch as far as it
will go.
The saw blade can’t be re-
moved from the blade holder.
The locking sleeve is not turned as
far as it will go.
Turn the locking sleeve as far as it
will go and remove the saw blade.
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.
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Printed: 07.07.2013 | Doc-Nr: PUB / 5071339 / 000 / 00