18 Repairing
► Place new washer (1) on new screw (2) with
the convex side facing outwards.
► Apply Loctite 243 thread locker to the thread
of screw (2).
► Position blade (3) so that the raised areas on
the contact area engage in the notches.
► Screw in screw (2) together with washer (1).
► Block blade (3) using a piece of wood (4).
► Tighten screw (2) to 60 Nm.
17.2
Sharpening and Balancing the
Blade
Sharpening and balancing the blade correctly
requires a lot of practice.
STIHL recommends having the blade sharpened
and balanced by a STIHL specialist dealer.
The current addresses of the specialist dealers
can be found under the respective STIHL country
representative at www.stihl.com.
WARNING
■ The cutting edges of the blade are sharp. This
may result in the user cutting themselves.
► Wear protective gloves.
19 Troubleshooting
19.1
Remedying Lawn Mower or Battery Faults
Fault
LEDs on the
battery
The lawn mower
1 LED flashes
does not start
green.
when switched
on.
1 LED illumina‐
tes red.
3 LEDs flashing
red.
0478-131-9669-A
► Switch the lawn mower off and remove the
battery.
► Upend the lawn mower.
► Remove the blade.
► Sharpen the blade. Observe the sharpening
angle and cool the blade,
Bluing of the blade during sharpening is not
permitted.
► Attach the blade.
► If anything is unclear: consult a STIHL special‐
ist dealer.
18 Repairing
18.1
The user should not repair the lawn mower or
blade themselves.
► If the lawn mower or blade is damaged: do not
use the lawn mower or blade and consult a
STIHL specialist dealer.
► If warning signs are illegible or damaged: have
the warning signs replaced by a STIHL spe‐
cialist dealer.
18.2
The charger does not need servicing and it can‐
not be repaired.
► If the charger has a malfunction or is dam‐
aged: Replace the charger.
► If the connecting cable has a malfunction or is
damaged: Do not use the charger and have
the connecting cable replaced by a STIHL
servicing dealer.
Cause
The battery charge
state is too low.
The battery is too
warm or too cold.
There is a fault in the
lawn mower.
Repairing the Lawn Mower
Servicing and Repairing the
Charger
Remedy
Charge the battery as described in the
instruction manual for
STIHL AL 101, 301, 500 chargers.
► Remove the battery.
► Allow the battery to cool down or warm
up.
► Remove the battery.
► Clean the electrical contacts in the bat‐
tery compartment.
► Fit the battery.
► Switch the lawn mower on.
English
20.2.
49