0458-718-8221-A
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English 
7 Maintenance, Repair and Storage
– Replace the charger if the power supply cord 
becomes damaged. The power supply cord cannot 
be repaired or replaced.
– Unplug the charger from the wall outlet and remove 
it from the trimmer when not in use
– Never jerk the power supply cord to disconnect it 
from the wall outlet. To unplug, grasp the plug, not 
the power supply cord.
– Do not use the power supply cord for any other 
purpose, e.g., for carrying or hanging up the charger.
– Make sure the power supply cord is located or 
marked so that it will not be stepped on, tripped over, 
come in contact with sharp objects or moving parts, 
or otherwise be subjected to damage or stress.
■ An extension cord should not be used unless absolutely 
necessary. Overloading an extension cord can result in 
overheating and fire. If an extension cord must be used:
– Use only a properly wired 16 gauge (AWG16) or 
heavier gauge extension cord.
– Never connect more than one charger or other 
device to an extension cord.
– Never use an extension cord with a wattage rating 
lower than the wattage on your charger's rating 
plate.
– Never use an extension cord if the blades on its plug 
are different from the blades on the charger plug in 
number, size or shape.
– Do not link (chain) extension cords.
■ In case of fire, or if the charger or trimmer it is charging 
emits smoke, an unusual smell, feels hot or appears 
abnormal in any other way:
– Immediately disconnect the charger from the outlet. 
Contact the authorities in the event of fire or 
explosion.
– Have the charger and trimmer inspected and 
repaired by an authorized STIHL servicing dealer 
before use.
■ Operation of the trimmer is disabled during the charging 
process to reduce the risk of electric shock.
– Do not attempt to operate the trimmer during the 
charging process or any time it is connected to the 
LK45.
7.1 Warnings and Instructions
WARNING
■ There are no user-authorized repairs for the trimmer or 
charger. To reduce the risk of fire, electric shock or other 
personal injury and property damage:
– Users may carry out only the cleaning and 
maintenance operations described in this manual. 
Users must not attempt any other cleaning, 
maintenance or repair.
– Strictly follow the cleaning and maintenance 
instructions in the appropriate sections of this 
instruction manual.
– Never attempt to repair a damaged or broken 
mowing head or cutting attachment. This may cause 
broken parts to come off and result in serious or fatal 
injuries.
– STIHL recommends that all repair or replacement 
work be performed by authorized STIHL servicing 
dealers.
– Check the charger's power supply cord 
and plug regularly for damage. If 
damaged, immediately disconnect the 
plug from the wall outlet.
7 Maintenance, Repair and Storage