Care And Maintenance; Every 6 Months - Hilti DSH 700 Mode D'emploi

8 Care and maintenance

WARNING
Set the switch to "stop" before carrying out any main-
tenance or repairs and before cleaning the machine.
8.1 Maintenance
8.1.1 Each day before use
Check that the machine is complete and in faultless
condition. Have it repaired if necessary.
Check the machine for leakage. Have it repaired if nec-
essary.
Check the machine for dirt and dust and clean it if
necessary.
Check that all operating controls function correctly. Have
them repaired if necessary.
Check that the cutting disc is in faultless condition. Re-
place it if necessary.

8.1.2 Every 6 months

Check the tightness of all screws and nuts accessible
from the outside.
Check that the fuel filter is clean (no dirt or deposits) and
replace it if necessary.
Retension the drive belt if it slips when the cutting disc is
under load.
8.1.3 When necessary
Check the tightness of all screws and nuts accessible
from the outside.
Replace the air filter if the machine doesn't start or motor
performance drops noticeably.
Check that the fuel filter is clean (no dirt or deposits) and
replace it if necessary.
Clean or replace the spark plug if the machine doesn't
start or is difficult to start.
Retension the drive belt if it slips when the cutting disc is
under load.
Readjust the motor idling speed if the cutting disc doesn't
stop rotating when the machine is idling.
8.2 Replacing the air filter 10 11
DANGER
The operator and bystanders must wear breathing
protection if the work causes dust.
CAUTION
Dust entering the machine may cause irreparable
damage. Never operate the machine if the air filter is
damaged or missing. When changing the air filter, the
machine should stand upright and should not be laid on
its side. Take care to ensure that no dust finds its way
onto the underlying filter screen.
NOTE
Change the air filter if motor performance drops notice-
ably or if the machine becomes difficult to start.
NOTE
In this machine, most of the dust is removed from the
air flow by a maintenance-free cyclone-type prescreen-
ing system. This preliminary air cleaning process greatly
reduces the amount of maintenance required compared
to conventional systems.
1. Release the securing screw on the air filter cover
and remove the cover.
2. Carefully remove the dust adhering to the air filter
and the filter chamber (use a vacuum cleaner).
3. Release the screws retaining the filter holder and
remove the air filter.
4. Fit the new filter and secure it with the filter holder.
5. Fit the air filter cover and tighten the retaining
screws.
8.3 Replacing a broken starter cord 12
CAUTION
The housing may suffer damage if the starter cord is too
short. Never shorten the starter cord.
1. Unscrew the three securing screws and remove the
starter assembly.
2. Remove the remaining pieces of the starter cord
from the spool and the starter handle.
3. Make a secure knot in the end of the replacement
starter cord and then pass the free end of the cord
through the hole in the spool from above.
4. Pass the end of the cord through the opening in the
starter housing from below, also through the starter
handle from below, and then make a secure knot in
the end of the cord.
5. Pull a length of the starter cord out of the housing
as shown in the illustration and pass it through the
slot in the spool.
6. Hold the cord securely close to the slot in the spool
and then rotate the spool in a clockwise direction as
far as it will go.
7. Rotate the spool back from its end point at least a ½
revolution, max. 1 ½ revolutions, until the slot in the
spool is in alignment with the opening in the starter
housing.
8. Hold the spool securely and pull the free end of the
cord at the starter handle out of the housing.
9. Hold the cord under tension, release the spool and
allow the starter cord to be pulled in.
en
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