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16 Checking the Trimmer
To switch the trimmer off:
► Release the trigger switch and trigger switch lockout.
Once the trigger switch and trigger switch lockout have 
been released, the retaining latch will return to its locked 
position and activation of the trigger switch will be 
blocked.
The cutting attachment will continue to move for a short time 
after the trigger switch is released. Take care to avoid 
contact after releasing the trigger switch and when setting 
down the trimmer.
16.1 Testing the Controls
Before starting work, confirm that the retaining latch (1), 
trigger switch lockout (2) and trigger switch (3) are 
undamaged and functioning properly:
Retaining Latch (1), Trigger Switch Lockout (2) and Trigger 
Switch (3)
WARNING
To reduce the risk of serious or fatal injuries, keep hands, 
feet and other parts of the body away from the cutting 
attachment. Do not touch the cutting attachment while the 
battery is inserted. Never touch the moving cutting 
attachment with your hand or any part of your body, 
@ 5.6.2. Keep bystanders at least 50 ft. (15 m) away while 
testing the controls.
To test the controls:
► Remove the battery.
► Unlock the retaining latch by pushing it forward with your 
thumb.
► Hold the retaining latch in the unlocked position.
► Depress the trigger switch lockout and the trigger switch.
► Release the retaining latch, trigger switch lockout and 
trigger switch.
The retaining latch, trigger switch lockout and trigger 
switch should return to their respective locked positions. If 
they do not, take the trimmer to an authorized STIHL 
servicing dealer to be repaired before use.
If you can depress the trigger switch without first unlocking 
the retaining latch and depressing the trigger switch 
lockout, take the trimmer to an authorized STIHL servicing 
dealer to be repaired before use.
► Insert the battery.
► Hold the trimmer firmly with both hands, your fingers 
wrapped tightly around the handles. Unlock the retaining 
latch and depress the trigger switch lockout and trigger 
switch momentarily.
The trimmer should switch on. If it does not, take the 
trimmer to an authorized STIHL servicing dealer to be 
repaired before use.
► Release the trigger switch.
The trimmer should switch off.
► If the cutting attachment does not stop after you release 
the trigger switch, remove the battery and take the trimmer 
to an authorized STIHL servicing dealer to be repaired 
before use.
16 Checking the Trimmer