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7 Battery Safety
– Wear non-slip, heavy-duty work gloves when 
handling metal cutting attachments.
– STIHL recommends that all repair or replacement 
work be performed by authorized STIHL servicing 
dealers.
■ Unintentional starting may result in personal injury or 
property damage. To reduce the risk of personal injury 
and property damage from unintentional starting:
■ Use of parts that are not authorized or approved by STIHL 
may cause serious or fatal injury or property damage.
– STIHL recommends that only identical STIHL 
replacement parts be used.
■ To reduce the risk of serious or fatal injuries from a loose 
or damaged cutting attachment:
– Keep blades sharp.
– Tighten all nuts, bolts and screws after each use.
– Never repair damaged cutting attachments by 
welding, straightening or modifying the shape. 
Always replace a damaged cutting attachment 
before use.
■ The gearbox becomes hot during operation. To reduce the 
risk of burn injury:
■ Improper storage can result in unauthorized use, damage 
to the power tool and an increased risk of fire, electric 
shock and other personal injury or property damage.
– Remove the connecting cord from the power tool 
before storing.
– Never store the power tool with the connecting cord 
inserted.
– Store the trimmer / brushcutter indoors in a dry, 
secure place that cannot be accessed by children or 
other unauthorized users.
7.1 Warnings and Instructions
WARNING
■ Read and follow the safety precautions on the battery and 
all warnings and instructions that accompany it.
■ Use of unauthorized batteries can damage the power tool 
and result in fire, explosion and personal injury and 
property damage.
– Use only genuine STIHL AR or AP series batteries 
with this power tool.
■ Use of STIHL AR or AP series batteries for any purpose 
other than powering STIHL power tools could be 
extremely dangerous.
– Use STIHL AR and AP series batteries only to power 
compatible STIHL power tools.
■ Use of unauthorized chargers can damage the battery and 
result in fire, explosion and personal injury and property 
damage.
– Charge STIHL AP series batteries only with genuine 
STIHLAL 101, AL300 or AL500 series chargers.
– Charge STIHL AR series backpack batteries only 
with genuine STIHL AL300 or AL500 series 
chargers.
– Remove the connecting cord before 
inspecting the trimmer / brushcutter or 
carrying out any cleaning, maintenance 
or repair work. Remove the connecting 
cord before storing, and any other time 
the power tool is not in use.
– Allow the gearbox to cool before 
inspecting or lubricating and before 
changing a cutting attachment or 
deflector. Avoid contacting the gearbox 
while it is still hot following operation.
7 Battery Safety