FS 40, FS 40 C, FS 50, FS 50 C
English
5
Avoid loose-fitting jackets, scarfs, 
neckties, jewelry, flared or cuffed pants, 
unconfined long hair or anything that 
could become caught on branches, 
brush or the moving parts of the unit. 
Secure hair so it is above shoulder level.
THE POWER TOOL
For illustrations and definitions of the 
power tool parts see the chapter on 
"Main Parts."
WARNING
Never modify this power tool in any way. 
Only attachments supplied by STIHL 
and expressly approved by STIHL for 
use with the specific STIHL model are 
authorized. Although certain 
unauthorized attachments are useable 
with STIHL power tools, their use may, 
in fact, be extremely dangerous. For the 
cutting attachments authorized by 
STIHL for your unit, see the chapter 
"Approved Combinations of Cutting 
Attachment, Deflector, Handle and 
Harness" in the instruction manual or the 
STIHL "Cutting Attachments, Parts & 
Accessories" catalog.
If this tool is subjected to unusually high 
loads for which it was not designed (e.g. 
heavy impact or a fall), always check 
that it is in good condition before 
continuing work. Check in particular that 
the fuel system is tight (no leaks) and 
that the controls and safety devices are 
working properly. Do not continue 
operating this machine if it is damaged. 
In case of doubt, have it checked by your 
STIHL servicing dealer.
THE USE OF THE POWER TOOL
Transporting the Power Tool
WARNING
To reduce the risk of injury from loss of 
control and blade or line contact, never 
carry or transport your power tool with 
the cutting attachment moving.
It may be carried only in a horizontal 
position. Grip the shaft in a manner that 
the machine is balanced horizontally. 
Keep the hot muffler away from your 
body and the cutting attachment behind 
you.
WARNING
Always shut off the engine and make 
sure the cutting attachment has stopped 
before putting a trimmer down. When 
transporting it in a vehicle, properly 
secure it to prevent turnover, fuel 
spillage and damage to the unit.
Fuel
Your STIHL power tool uses an oil- 
gasoline mixture for fuel (see the 
chapter on "Fuel" of your instruction 
manual).
Always wear heavy duty 
work gloves (e.g. made of 
leather or other wear 
resistant material) when 
handling the machine, 
blade and the cutting 
attachment. Heavy-duty, 
nonslip gloves improve 
your grip and help to pro-
tect your hands.
Clothing must be sturdy 
and snug-fitting, but allow 
complete freedom of 
movement. Wear long 
pants made of heavy 
material to help protect 
your legs. Do not wear 
shorts, sandals or go 
barefoot.
Good footing is very 
important. Wear sturdy 
boots with nonslip soles. 
Steel-toed safety boots 
are recommended.