STIHL Fs 50 C Manual

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STIHL FS 40, 50
Warning!
Read and follow all safety 
precautions in Instruction Manual – 
improper use can cause serious or 
fatal injury.
Advertencia!
Lea y siga todas las precauciones 
de seguridad dadas en el manual 
de instrucciones – el uso incorrecto 
puede causar lesiones graves o 
mortales.
Instruction Manual
Manual de instrucciones 

Instruction Manual
1 - 44
Manual de instrucciones
45 - 93 

Original Instruction Manual Printed on chlorine-free paper
Printing inks contain vegetable oils, paper can be recycled. © ANDREAS STIHL AG & Co. KG, 2011
0458-546-8621-C. M13-5.H11.CP. 
0000001050_008_GB
FS 40, FS 40 C, FS 50, FS 50 C
English
1
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Contents
Allow only persons who fully understand 
this manual to operate your trimmer.
To receive maximum performance and 
satisfaction from your STIHL trimmer, it 
is important that you read, understand 
and follow the safety precautions and 
the operating and...

FS 40, FS 40 C, FS 50, FS 50 C
English
2
Pictograms
The meanings of the pictograms 
attached to or embossed on the 
machine are explained in this manual.
Depending on the model concerned, the 
following pictograms may be on your 
machine.
Symbols in Text
Many operating and safety instructions 
are supported by illustrations.
The individual steps or procedures 
described in the manual may be marked 
in different ways:
NA bullet marks a step or procedure.
A description of a step or procedure that 
refers...

FS 40, FS 40 C, FS 50, FS 50 C
English
3 The terminology utilized in this manual 
when referring to the power tool reflects 
the type of cutting attachments that may 
be mounted on it. The term "trimmer" is 
used to designate an FS unit that is 
equipped with a nylon line head or a 
head with flexible plastic blades (i.e., the 
PolyCut head).Have your STIHL dealer show you how 
to operate your power tool. Observe all 
applicable local safety regulations, 
standards and ordinances.
Use your...

FS 40, FS 40 C, FS 50, FS 50 C
English
4 These conditions reduce the hand's 
ability to feel and regulate temperature, 
produce numbness and burning 
sensations and may cause nerve and 
circulation damage and tissue necrosis.
All factors which contribute to 
whitefinger disease are not known, but 
cold weather, smoking and diseases or 
physical conditions that affect blood 
vessels and blood transport, as well as 
high vibration levels and long periods of exposure to vibration are mentioned as...

FS 40, FS 40 C, FS 50, FS 50 C
English
5 Be particularly alert and cautious when 
wearing hearing protection because 
your ability to hear warnings (shouts, 
alarms, etc.) is restricted.
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...

FS 40, FS 40 C, FS 50, FS 50 C
English
6 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.
Fuel
Your STIHL power tool uses an oil- 
gasoline mixture for fuel (see the 
chapter on "Fuel" of your instruction 
manual).Fueling Instructions
In order to reduce the risk of burns and 
other personal injury from escaping gas 
vapor and fumes, remove the...

FS 40, FS 40 C, FS 50, FS 50 C
English
7 marks on the grip of the cap and on the 
fuel tank opening lining up. Using the 
grip, press the cap down firmly while 
turning it clockwise as far as it will go 
(approx. 1/4 turn).
Misaligned, damaged or broken cap
NIf the cap does not drop fully into the 
opening when the positioning marks 
line up and/or if the cap does not 
tighten properly when twisted, the 
base of the cap may be prematurely 
rotated (in relation to the top) to the 
closed position. Such...

FS 40, FS 40 C, FS 50, FS 50 C
English
8 Keep the handles clean and dry at all 
times; it is particularly important to keep 
them free of moisture, pitch, oil, fuel mix, 
grease or resin in order for you to 
maintain a firm grip and properly control 
your power tool.
Keep the deflector (and the attached 
skirt where appropriate) adjusted 
properly at all times (see chapters on 
"Mounting the Deflector" and "Mounting 
the Cutting Attachment" of your 
instruction manual).Arrows on the...