Hilti DSH 700 Manual Del Usuario página 48

Trouble or fault
Low engine power / poor
cutting performance
Cutting disc rotates while the
engine is idling.
Cutting disc doesn't rotate.
Starter assembly doesn't
work.
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.
40
Possible cause
No ignition spark visible or spark is
too weak (seen when spark plug is
removed).
Wrong fuel mixture.
The disc specification is unsuitable
for the material to be cut.
Drive belt or cutting disc slips.
Engine compression is too low.
The product is used at an altitude
greater than 1500 meters above
sea level.
Incorrect carburetor setting (fuel /
air mixture).
Idling speed is too high.
The half-throttle position is en-
gaged.
Faulty centrifugal clutch.
Inadequate drive belt tension or the
drive belt is broken.
The clutch claws are not engaging.
Action to be taken
▶ Clean the spark plug to remove
carbon deposits.
▶ Check the spark plug electrode
gap and set it correctly.
▶ Change the spark plug.
▶ Check the ignition coil, cable,
plug connections and switch
and change the defective part if
necessary.
▶ Empty the fuel tank and flush
out the tank and fuel supply line.
▶ Fill the fuel tank with the correct
fuel.
▶ Change the cutting disc or ask
Hilti Service for advice.
▶ Check that the cutting disc is
clamped securely.
▶ Have the product repaired by
Hilti Service.
▶ Check the engine compression
and, if necessary, replace worn
parts (piston rings, piston,
cylinder, etc.).
▶ Have the carburetor adjusted
by Hilti Service.
▶ Have the carburetor adjusted
by Hilti Service.
▶ Check the idling speed and
adjust it if necessary.
▶ Release the half-throttle posi-
tion.
▶ Change the centrifugal clutch.
▶ Have the product repaired by
Hilti Service.
▶ Clean the clutch claws so that
they move freely.