English 29
Trouble or fault Possible cause Action to be taken
Low engine power / poor
cutting performance
Drive belt or cutting disc slips. ▶ Check that the cutting disc is
clamped securely.
▶ Have the product repaired by
Hilti Service.
Engine compression is too low. ▶ Check the engine compression
and, if necessary, replace worn
parts (piston rings, piston,
cylinder, etc.).
The product is used at an altitude
greater than 1500 meters above
sea level.
▶ Have the carburetor adjusted
by Hilti Service.
Incorrect carburetor setting (fuel /
air mixture).
▶ Have the carburetor adjusted
by Hilti Service.
Cutting disc rotates while the
engine is idling.
Idling speed is too high. ▶ Check the idling speed and
adjust it if necessary.
The half-throttle position is en-
gaged.
▶ Release the half-throttle posi-
tion.
Faulty centrifugal clutch. ▶ Change the centrifugal clutch.
Cutting disc doesn’t rotate. Inadequate drive belt tension or the
drive belt is broken.
▶ Have the product repaired by
Hilti Service.
Starter assembly doesn’t
work.
The clutch claws are not engaging. ▶ Clean the clutch claws so that
they move freely.
Starter cord is broken. ▶ Replace the starter cord.
10 Disposal
Most of the materials from which Hilti products 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.
Drilling slurry
Disposal of drilling slurry directly into rivers, lakes or the sewerage system without suitable pretreatment
presents environmental problems.
▶ Ask the local public authorities for information about current regulations.
We recommend the following pretreatment:
▶ Collect the drilling slurry (for example, using a wet-type vacuum cleaner).
▶ Allow the drilling slurry to settle and dispose of the solid material at a construction waste disposal site
(addition of a flocculent may accelerate the settling process).
▶ The remaining water (alkaline, pH value greater than 7) must be neutralized by the addition of an acidic
neutralizing agent or diluted with a large volume of water before it is allowed to flow into the sewerage
system.
11 China RoHS (Restriction of Hazardous Substances)
Click on the links to go to the table of hazardous substances: qr.hilti.com/r4793 (DSH 700),
qr.hilti.com/r4828495 (DSH 700-X), qr.hilti.com/r4496 (DSH 900) and qr.hilti.com/r4828498 (DSH 900-X).
There is a link to the RoHS table, in the form of a QR code, at the end of this document.
12 Manufacturer’s warranty
▶ Please contact your local Hilti representative if you have questions about the warranty conditions.
Printed: 24.04.2018 | Doc-Nr: PUB / 5265931 / 000 / 02
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