0458-806-8621-B
27
English 
17 During Operation
17.1 Using the Trimmer
WARNING
To avoid serious or fatal injury, avoid contact with the 
moving cutting attachment, @ 5.6.4.
WARNING
To reduce the risk of personal injury, never work with the 
trimmer in the rain or in wet or damp conditions, @ 5.5. 
Always wear proper clothing and protective apparel, 
including proper eye protection, when operating your 
trimmer, @ 5.4. Keep bystanders at least 50 ft. (15 m) away 
from the work area, @ 5.6.4. Work carefully and maintain 
proper control of the trimmer, @ 5.6.2.
The trimmer is designed for two-handed operation.
► Swing the trimmer back and forth carefully in a controlled 
arc parallel to the ground.
► Move forward slowly, keeping two hands on the trimmer at 
all times.
When trimming, a bump guard (1) limits the cutting range of 
the mowing line and helps prevent unwanted damage to 
vegetation in certain circumstances (see illustration). 
Always remove the battery before mounting or adjusting the 
bump guard.
Observe all applicable laws, regulations, standards and 
ordinances.
17.2 Adjusting the Nylon Line
WARNING
To reduce the risk of personal injury from unintended 
activation, always switch off the motor and remove the 
battery before manually adding or adjusting the nylon line.
► While pressing the trigger switch, tap the rotating mowing 
head on the ground.
Approximately 1.2 in. (30 mm) of fresh nylon line will be 
advanced with each tap.
The line limiting blade in the deflector trims the mowing line 
to the proper length.
The bump feed mechanism will not advance additional line 
if the mowing line is shorter than 0.1 in. (25 mm). To feed 
additional line manually:
► Switch off the trimmer and remove the battery.
► Depress and hold the button on the mowing head.
► Pull out the mowing line by hand.
► If the mowing line cannot be pulled out to the required 
length, install a new spool of line.
STIHL recommends keeping nylon line or polymer blades in 
a water bath for at least 12 to 24 hours before use to 
increase their useful life.
18.1 Preparing for Transportation or Storage
WARNING
To reduce the risk of personal injury from unintended 
activation or unauthorized use, switch off the motor, ensure 
the cutting attachment has stopped and remove the battery 
before transporting the trimmer or putting it down.
To prepare the trimmer for transportation or storage:
► Switch off the trimmer, @ 15.2.
► Remove the battery, @ 14.2.
17 During Operation
18 After Finishing Work