FS 400, FS 450
English
9
Harness / Strap
The harness is included in the scope of 
supply or available as a special 
accessory.
N Use a shoulder strap.
N With the engine running, attach the 
machine to the shoulder strap.
Grass cutting blades, brush knives and 
shredder blades must always be used in 
combination with a full harness.
Circular saw blades must always be 
used in combination with a full harness 
with a quick-release system.
Mowing Head with Nylon Line
Nylon line achieves a soft cut for edging 
and trimming around trees, fence posts, 
etc. – less risk of damaging tree bark.
The mowing head comes with an 
instruction leaflet. Refill the mowing 
head with nylon line as described in the 
instruction leaflet.
WARNING
To reduce the risk of serious injury, 
never use wire or metal-reinforced line in 
place of the nylon line.
STIHL DuroCut
Check the wear limit marks!
If one of the wear limit marks imbedded 
in the baseplate of the DuroCut 
(exclamation marks) becomes visible, 
do not continue using the mowing head 
since it may otherwise be damaged.
Replace the worn baseplate.
The mowing head comes with 
instruction leaflets. Equip the mowing 
head only with nylon line as described in 
the instruction leaflets.
WARNING
Never use wire in place of the nylon 
mowing line – risk of injury.
STIHL Polycut Mowing Head with 
Polymer Blades
For mowing unobstructed edges of 
meadows (without posts, fences, trees 
or similar obstacles).
Check the wear limit marks!