0458-713-8221-A
18
English 
9 Before Starting Work
9.1 Preparing the Trimmer for Operation
Before starting work: 
► Fully charge the battery, @ 10.2.
► Mount the deflector, @ 12.1.
► Mount the trimmer line spool on the mowing head, 
@ 12.2.1.
► Mount the trimmer's loop handle, @ 12.3.
► Adjust the length of the drive tube, @ 13.1.
► Adjust the trimmer's loop handle, @ 13.2.
► Check the controls for proper function and condition, 
@ 16.1.
10.1 Setting up the Charger
WARNING
Read and follow the battery and charger safety precautions 
and instructions in this manual, @ 6 and @ 7. To reduce 
the risk of short circuit, which could lead to electric shock, 
fire and explosion, make sure the charger and its 
components are dry and not damaged; operate the charger 
indoors at an appropriate ambient temperature, @ 7.
WARNING
Since the battery and charger heat up during the charging 
process, do not operate the charger on a combustible 
surface or in a location where combustible gases, liquids, 
vapors, dusts or other materials and substances are 
present, @ 7.
To set up the charger:
► Insert the plug (3) into a properly installed wall outlet (4) 
matching the voltage and electrical frequency stated on 
the rating plate on the back of the charger.
The charger runs a self-test immediately after it is plugged 
in. The charger LED (1) will glow green for about 1 second, 
then it will glow red briefly before going out. Once the LED 
goes out, the self-test is complete and the charger is ready 
to charge the battery.
► Position the power supply cord (2) so that it will not be 
stepped on, tripped over, come in contact with sharp 
objects or moving parts or otherwise present a tripping 
hazard or be subjected to damage or stress.
10.2 Charging
WARNING
STIHL batteries contain safety features and devices which, 
if damaged, may allow the battery to generate heat, rupture, 
leak, ignite or explode. Never charge a malfunctioning, 
damaged, cracked, leaking or deformed battery or use a 
charger that has been damaged. For indoor use only. Keep 
the charger dry. Protect it from rain, water, liquids and damp 
conditions. Never insert a wet battery. Never use a wet 
charger, @ 7.
9 Before Starting Work
10 Charging the Battery