FS 40, FS 40 C, FS 50, FS 50 C
English
29
Adjusting Nylon Line
STIHL AutoCut
N Hold the rotating mowing head 
above the ground – tap it on the 
ground once – about 3 cm (1.2 in) of 
fresh line is advanced.
N The blade (1) on the deflector (2) 
trims surplus line to the correct 
length – avoid tapping the mowing 
head more than once at a time.
Line feed operates only if both lines still 
have a minimum length of 2.5 cm (1 in).
If the line is shorter than 2.5 cm (1 in):
WARNING
To reduce the risk of injury, always shut 
off the engine before adjusting the 
mowing line by hand.
N Turn the machine over.
N Press down the cap on the spool as 
far as stop.
N Pull the ends of the lines out of the 
spool.
If the spool is empty, refill with fresh 
lengths of nylon line.
All other mowing heads
Refer to the instructions supplied with 
the mowing head.
WARNING
To reduce the risk of injury, always shut 
off the engine before adjusting the 
mowing line by hand.
Replacing nylon line
STIHL DuroCut, STIHL FixCut
WARNING
To reduce the risk of injury, always shut 
off the engine before fitting new nylon 
line.
N Fit nylon line in mowing head as 
described in the instructions 
supplied.
STIHL AutoCut C 5-2
Disassembling the mowing head and 
removing remaining nylon line
In normal operation, the supply of nylon 
line in the head is used up almost 
completely.
N Hold the mowing head steady and 
rotate the cap (1) counterclockwise 
until it can be removed.
N Pull the spool (2) out of the mowing 
head (3) and remove the remaining 
line.