12 English
Note
To help ensure safe and reliable operation, use only genuine Hilti spare
parts and consumables. Spare parts, consumables and accessories
approved by Hilti for use with the product can be found at your local
Hilti Center or online at: www.hilti.com
8 Transport and storage
• Do not transport electric tools with accessory tools fitted.
• Always unplug the supply cord before storing an electric tool or appliance.
• Store tools and appliances in a dry place where they cannot be accessed
by children or unauthorized persons.
• Check electric tools or appliances for damage after long periods of
transport or storage.
9 Troubleshooting
If the trouble you are experiencing is not listed in this table or you are unable
to remedy the problem by yourself, please contact Hilti Service.
Trouble or fault Possible cause Action to be taken
The tool doesn’t
start or switches it-
self off during opera-
tion.
Interruption in the elec-
tric supply.
▶ Plug in another electric
tool or appliance
and check whether it
works.
The carbon brushes are
worn out.
▶ Have the power tool
checked by a trained
electrical special-
ist and the carbon
brushes replaced if
necessary.
No hammering ac-
tion.
The power tool is too
cold.
▶ Bring the tip of the drill
bit into contact with
the working surface,
switch the rotary
hammer on and allow
it to run. If necessary,
repeat the procedure
until the hammering
mechanism begins to
operate.
Printed: 03.03.2017 | Doc-Nr: PUB / 5324643 / 000 / 01