14 English
Trouble or fault Possible cause Action to be taken
No hammering action. 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.
The rotary hammer doesn’t
achieve full power.
The gauge (cross section) of the
extension cord conductors is inad-
equate.
▶ Use an extension cord with
an adequate conductor cross
section.
The drill bit cannot be re-
leased.
The chuck is not pulled back fully. ▶ Pull the chuck back as far
as it will go and remove the
accessory tool.
The drill bit makes no
progress.
The power tool has been set to
reverse rotation.
▶ Set the power tool to forward
rotation.
9 Disposal
Most of the materials from which Hilti tools and appliances are manufactured can be recycled. The
materials must be correctly separated before they can be recycled. In many countries, your old tools,
machines or appliances can be returned to Hilti for recycling. Ask Hilti Service or your Hilti representative
for further information.
▶ Disposal of electric tools or appliances together with household waste is not permissible.
10 China RoHS (guideline on restriction of the use of dangerous substances)
The following link takes you to the table of dangerous substances: qr.hilti.com/r321.
You will find a link to the RoHS table, in the form of a QR code, at the end of this document.
11 Manufacturer’s warranty
▶ Please contact your local Hilti representative if you have questions about the warranty conditions.
Printed: 31.05.2017 | Doc-Nr: PUB / 5070749 / 000 / 04
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