running water for cleaning. This may negatively affect the
electrical safety of the power tool.
9.3 Care of the Li-ion battery
Avoid entrance of moisture.
Charge the battery fully before using it for the first time.
In order to achieve maximum battery life, stop discharging
the battery as soon as a significant drop in performance
is noticed.
NOTE
If use of the power tool continues, further battery dis-
charge will be stopped automatically before the battery
cells suffer damage.
Charge the battery with the Hilti charger approved for use
with Li-ion batteries.
NOTE
- A conditioning charge (as is required with NiCd or
NiMH batteries) is not necessary.
- Interruption of the charging procedure has no negative
effect on battery life.
- Charging can be started at any time with no negative
effect on battery life. There is no memory effect (as
with NiCd or NiMH batteries).
- For best results, batteries should be stored fully
charged in a cool dry place. Avoid charging the battery
in places subject to high ambient temperatures (e.g. at
a window) as this has an adverse effect on battery life
and increases the rate of self-discharge.
- If the battery no longer reaches full charge, it may
have lost capacity due to aging or overstressing. It
is possible to continue working with a battery in this
condition but it should be replaced in good time.
9.4 Maintenance
WARNING
Repairs to the electrical section of the power tool may
be carried out only by trained electrical specialists.
Check all external parts of the power tool for damage
at regular intervals and check that all controls operate
faultlessly. Do not operate the power tool if parts are
damaged or when the controls do not function faultlessly.
If necessary, the power tool should be repaired by Hilti
Service.
9.5 Changing the AVR contact shoe
11
The AVR contact shoe can be changed when required.
Before changing the contact shoe, engage the transport
lock and remove the battery from the power tool.
1. Engage the transport lock.
2. Remove the battery.
3. Remove the saw blade.
4. Pull the rectangular plastic pin forward. It is located
between the two AVR contact shoe guide pins.
5. Pull the AVR contact shoe out.
6. Push the rectangular plastic part back into its original
position.
7. Grease the AVR contact shoe lightly and insert it
fully in the guides.
8. Check to ensure that the contact shoe engages
correctly.
9.6 Checking the power tool after care and
maintenance
After carrying out care and maintenance work on the
power tool, check that all protective and safety devices
are fitted and that they function faultlessly.
10 Troubleshooting
Fault
Possible cause
Remedy
The power tool doesn’t start.
The control switch is defective.
Have it checked by a trained electrical
specialist and replaced if necessary.
The battery is discharged or fitted
incorrectly.
The battery must be heard to engage
with a double click or, respectively,
needs to be charged.
The transport lock is engaged.
Disengage the transport lock.
The power tool doesn’t achieve
full power.
The control switch is not pressed
fully.
Press the control switch as far as it
will go.
The battery is discharged.
Change the battery and recharge the
discharged battery.
The saw blade can’t be re-
moved from the blade holder.
The locking sleeve is not turned as far
as it will go.
Turn the locking sleeve as far as it will
go and remove the saw blade.
en
10
Printed: 08.07.2013 | Doc-Nr: PUB / 5071341 / 000 / 02
