FS 511 C-M, 561 C-M
Instruction Manual2 - 24
English
Contents
1 Introduction................................................. 2
2 Guide to Using this Manual.........................2
3 Overview..................................................... 3
4 Safety Precautions......................................4
5 Preparing Trimmer for Operation.............. 11
6 Assembling the Trimmer........................... 11
7 Adjusting Trimmer for User....................... 14
8 Mixing Fuel and Refueling the Brushcutter
.................................................................. 14
9 Starting and Stopping the Engine............. 15
10 Testing the Trimmer..................................16
11 Operating the Trimmer..............................16
12 After Finishing Work..................................18
13 Transporting..............................................19
14 Storing.......................................................19
15 Cleaning....................................................19
16 Maintenance............................................. 19
17 Repairing...................................................20
18 Troubleshooting........................................ 20
19 Specifications............................................21
20 Combinations of Cutting Attachments,
Deflectors and Carrying Systems............. 22
21 Spare Parts and Accessories....................23
22 Disposal.................................................... 23
23 EC Declaration of Conformity................... 23
24 UKCA Declaration of Conformity.............. 23
1 Introduction
Dear Customer,
Thank you for choosing STIHL. We develop and
manufacture our quality products to meet our
customers’ requirements. The products are
designed for reliability even under extreme con‐
ditions.
STIHL also stands for premium service quality.
Our dealers guarantee competent advice and
instruction as well as comprehensive service
support.
STIHL expressly commit themselves to a sus‐
tainable and responsible handling of natural
resources. This user manual is intended to help
you use your STIHL product safely and in an
environmentally friendly manner over a long
service life.
We thank you for your confidence in us and hope
you will enjoy working with your STIHL product.
IMPORTANT! READ BEFORE USING AND
KEEP IN A SAFE PLACE FOR REFERENCE.
2 Guide to Using this Manual
2.1 Applicable Documentation
Local safety regulations apply.
► Read, understand and save the following
documents in addition to this instruction man‐
ual:
Instruction manual and packaging of the
–
cutting attachment you are using
2.2 Symbols used with warnings in the text
WARNING
■ This symbol indicates dangers that can cause
serious injuries or death.
► The measures indicated can avoid serious
injuries or death.
NOTICE
■ This symbol indicates dangers that can cause
damage to property.
► The measures indicated can avoid damage
to property.
2.3 Symbols in Text
This symbol refers to a chapter in this
instruction manual.
Translation of Original Instruction Manual
0000009223_010_GB
Printed on chlorine-free paper
Printing inks contain vegetable oils, paper can be recycled.
© ANDREAS STIHL AG & Co. KG 2022
0458-856-0121-B. VA3.B22.
Dr. Nikolas Stihl
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3 Overview English
3 Overview
3.1 Brushcutter
1 Filter cover
Covers the air filter.
2 Air filter
The air filter filters the air entering the engine.
3 Manual fuel pump
The manual fuel pump eases engine starts.
4 Shutter
Serves to select summer or winter operating
mode.
5 Cover
Covers the spark plug.
6 Spark plug boot
Connects the ignition lead to the spark plug.
7 Spark plug
Ignites the fuel-air mixture in the engine.
8 Muffler
Reduces trimmer noise emissions.
9 Starter grip
Serves to crank the engine.
10 Fuel tank cap
Closes the fuel tank.
11 Choke lever
Helps start the engine.
12 Carrying strip
Perforated strip for suspending the carrying
system.
13 Control handle
The control handle is used for operating,
holding and controlling the brushcutter.
14 Throttle trigger
Controls the engine speed.
15 Throttle trigger lockout
Unlocks the throttle trigger.
16 Stop switch
Shuts off the engine.
17 Wing screw
The wing screw secures the handlebar to the
handle support.
18 Handlebar
The handlebar connects control handle and
handle with the shaft.
19 Handle
The handle is for holding and controlling the
brushcutter.
20 Throttle cable
Connects the throttle trigger to the engine.
21 Shaft
The shaft connects all components.
22 Gear housing
The gear housing encloses the gearbox.
23 Opening for stop pin
The opening for the stop pin accommodates
the stop pin.
24 Screw plug
The screw plug closes the filler opening for
STIHL gear grease.
25 Stop pin
The stop pin blocks the shaft while a cutting
attachment is being mounted.
# Rating plate with machine number
3.2 Deflectors and Cutting Attach‐
ments
The illustrations show examples of deflectors
and cutting attachments. Approved combinations
are listed in this instruction manual, 20.
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English 4 Safety Precautions
3.3 Icons
Meanings of symbols that may be on the trimmer
and the deflector:
This icon denotes the fuel tank.
This symbol denotes the manual fuel
pump.
Shutter is in winter mode in this position.
Shutter is in summer mode in this position.
Engine is operated or started with the
choke control in this position.
Engine can be started with the choke con‐
trol in this position.
1 Deflector for metal cutting attachments
The metal cutting tool guard protects the user
from thrown objects and contact with the
grass cutting blade or brush knife.
2 Grass Cutting Blade
Cuts grass and weeds.
3 Brush knife
Cuts brushwood.
4 Guard for shredder blades
The shredder blade guard protects the user
from thrown objects and from contact with the
shredding blade.
5 Shredder blades
The shredder blade cuts and shreds thickets.
6 Deflector for mowing heads
Protects user from flying debris and contact
with the mowing head.
7 Line limiting blade
Line limiting blade trims nylon lines to correct
length.
8 Mowing head
Moving head accommodates the mowing
lines.
9 Limit stop
Protects user from flying debris and contact
with the circular saw blade and helps support
the trimmer against the wood during cutting
work.
10 Circular Saw Blade
Cuts shrubs and trees.
11 Transport guard
Helps protect user from contact with metal
cutting attachments.
4 0458-856-0121-B
This symbol marks the stop switch.
This icon shows the direction of rota‐
tion of the cutting attachment.
This icon shows the maximum diame‐
ter of the cutting attachment in millime‐
ters.
This icon shows the rated speed of the cut‐
ting attachment.
Guaranteed sound power level in
accordance with Directive 2000/14/EC
in dB(A) for the purpose of comparing
the sound emissions of products.
4 Safety Precautions
4.1 Warning Signs
4.1.1 Warning Symbols
Meanings of warning signs on the trimmer:
Observe safety notices and take the
necessary precautions.
Read, understand and save the
instruction manual.
Wear safety glasses, hearing protec‐
tion and a hard hat.
Wear safety boots.
15m (50ft)
4 Safety Precautions English
Wear work gloves.
Use this deflector for shredder blades.
Observe safety notices on kickback
and take the necessary precautions.
Observe safety notices on flying debris
and take the necessary precautions.
Maintain safe distance.
Do not touch hot surface.
4.1.2 Deflector for mowing heads
Meanings of warning signs and labels on the
deflector for mowing heads:
Use this deflector for mowing heads.
Do not use this deflector for grass cut‐
ting blades.
Do nit use this deflector for brush kni‐
ves.
Do not use this deflector for shredder
blades.
Do not use this deflector for circular
saw blades.
4.1.3 Deflector for metal cutting attachments
Meanings of warning signs on the deflector for
metal cutting attachments:
Use this deflector for grass cutting
blades.
Use use this deflector for brush knives.
Do not use this deflector for circular
saw blades.
4.1.4 Guard for shredder blades
Meanings of warning signs and labels on the
deflector for shredder blades:
Do not sse this deflector for shredder
blades.
Do not use this deflector for mowing
heads.
Do not use this deflector for grass cut‐
ting blades.
Do not use this deflector for brush kni‐
ves.
Do not use this deflector for circular
saw blades.
4.2 Intended Use
The STIHL FS 511 or FS 561 trimmer is
designed for the following applications:
with a mowing head: Mowing grass
–
with a grass cutting blade: Mowing grass and
–
weeds
with a brush knife: For cutting brush with a
–
stem diameter up to 20 mm
with a shredder blade: For mowing and shred‐
–
ding thickets with a diameter of up to 20 mm
with a circular saw blade: For cutting shrubs
–
and trees with a stem diameter up to 70 mm
WARNING
■
Using the brushcutter for purposes for which it
is not designed may result in serious or fatal
injuries and damage to property.
►
Use the brushcutter as described in this
User Manual.
Do not use this deflector for mowing
heads.
0458-856-0121-B 5
English 4 Safety Precautions
4.3 The Operator
WARNING
■
Users who have had no instruction cannot rec‐
ognize or assess the risks involved in using
the trimmer. The user or other persons may
sustain serious or fatal injuries.
► Read, understand and save the
instruction manual.
► If you pass the trimmer is on to another
user: Always give them the instruction man‐
ual.
►
Make sure the user meets the following
requirements:
The user must be rested.
–
The user must be in good physical con‐
–
dition and mental health to operate and
work with the trimmer. If the user’s
physical, sensory or mental ability is
restricted, he or she may work only
under the supervision of or as instructed
by a responsible person.
The user is able to recognize and
–
assess the risks involved in using the
trimmer.
The user must be of legal age or is
–
being trained in a trade under supervi‐
sion in accordance with national rules
and regulations.
The user has received instruction from a
–
STIHL servicing dealer or other experi‐
enced user before working with the trim‐
mer for the first time.
The user must not be under the influ‐
–
ence of alcohol, medication or drugs.
► If you have any queries: Contact a STIHL
servicing dealer for assistance.
■ The trimmer’s ignition system produces an
electromagnetic field. This field may interfere
with some pacemakers. This can result in seri‐
ous or fatal injuries.
►
If the user has a pacemaker: Make sure the
pacemaker is not affected.
4.4 Clothing and equipment
►
► Wear long trousers made from resistant
■ Noise is generated during operation. Noise
can damage your hearing.
■ Falling objects can cause head injuries.
■ Dust can be whipped up during operation.
Whipped up dust can damage the respiratory
passages and cause allergic reactions.
►
■ Inappropriate clothing can snag on wood,
brush or the brushcutter. Users not wearing
suitable clothing are at risk of serious injury.
►
► Remove scarves and jewelry.
■ The user may come into contact with the rotat‐
ing cutting attachment during operation. This
may result in serious injury to the user.
►
► Wear long trousers made from resistant
■ When mounting and dismounting the cutting
attachment and during cleaning or mainte‐
nance, the user may come into contact with
the sharp edges of the cutting attachment or
the crosscut blade. This may result in injury to
the user.
► Wear close-fitting safety glasses.
Suitable safety glasses are tested in
accordance with EN 166 or national
regulations and available commer‐
cially with the corresponding mark‐
ing.
Wear face protection.
material.
► Wear ear protection.
► If objects are likely to fall while work‐
ing: wear a hard hat.
If dust is generated: Wear a dust respirator
mask.
Wear close-fitting clothing.
Wear robust footwear.
► If you are using a metal cutting
attachment: Wear steel-toed safety
boots.
material.
► Wear work gloves made from resist‐
ant material.
WARNING
■
Long hair can be drawn into the brushcutter
during operation. This may result in serious
injury to the user.
►
Tie up and confine long hair above your
shoulders.
■ Objects can be thrown at high speed during
operation. This may result in injury to the user.
6 0458-856-0121-B
■ Wearing unsuitable footwear may cause the
user to slip. This may result in injury to the
user.
►
Wear sturdy, closed-toed footwear with
high-grip soles.
15m (50ft)
4 Safety Precautions English
4.5 Working Area and Surround‐
ings
WARNING
■
Bystanders, children and animals are not
aware of the dangers of the brushcutter or fly‐
ing debris. This may result in serious injury to
bystanders, children and animals and damage
to property.
► Do not allow bystanders,
children or animals within 15
meters of the work area.
► Maintain a clearance of 15 meters from
objects.
► Do not leave the brushcutter unattended.
► Make sure that children cannot play with
the brushcutter.
■ Hot exhaust gas is emitted through the muffler
while the engine is running. Hot exhaust gas
can ignite easily flammable materials and
cause a fire.
►
Keep exhaust gas well away from easily
flammable materials.
4.6 Safe Condition
4.6.1 Brushcutter
The brushcutter is in a safe condition if the fol‐
lowing points are observed:
The brushcutter is not damaged.
–
There is no fuel leaking from the trimmer.
–
The fuel tank cap is closed.
–
The brushcutter is clean.
–
The controls function properly and have not
–
been modified.
A combination of cutting attachment and
–
deflector recommended in this user manual is
mounted.
The cutting attachment and deflector are prop‐
–
erly mounted.
Genuine STIHL accessories for this brushcut‐
–
ter are fitted.
The accessories are correctly attached.
–
All accessible screws and fastening parts are
–
firmly tightened.
WARNING
■
If not in safe condition, components may no
longer operate correctly, safety devices may
be disabled and fuel leakage may occur. This
may result in serous or fatal injury to people.
►
Work only with an undamaged brushcutter.
► If fuel is leaking from the trimmer: Do not
use the trimmer and contact a STIHL dealer
for assistance.
►
Close the fuel tank cap.
► If the brushcutter is dirty: Clean the brush‐
cutter.
► Never attempt to modify your brushcutter.
Exception: Mounting one of the combina‐
tions of cutting attachment and deflector
recommended in this user manual.
►
If the controls do not function properly: Do
not use your brushcutter.
► Fit genuine STIHL accessories for this
brushcutter.
► Mount the cutting attachment and deflector
as described in this user manual.
► Attach accessories as described in this
User Manual or in the User Manual for the
accessories.
►
Tighten loose screws and fastening parts.
► Never insert objects in the openings of the
brushcutter.
► Replace worn or damaged labels.
► If you have any doubts, be sure to consult a
STIHL dealer.
4.6.2 Deflector
The deflector is in a safe condition if the following
points are observed:
The deflector is not damaged.
–
The screws on the guard are tightened to the
–
correct torque.
If the guard is used for mowing heads: The
–
line limiter blade is correctly installed.
WARNING
■
If not in safe condition, components may no
longer operate correctly and safety devices
may be disabled. This may result in serious
injury to the user.
►
Work only with an undamaged deflector.
► Tighten the screws on the guard to the cor‐
rect tightening torque, 6.2.
► If the guard for mowing heads is used:
Work with a properly attached cut-off blade.
► If you have any doubts, be sure to consult a
STIHL dealer.
4.6.3 Mowing Head
The mowing head is in a safe condition if the fol‐
lowing points are observed:
The mowing head is not damaged.
–
The mowing head is not jammed.
–
The mowing lines are properly installed.
–
The wear limits are not exceeded.
–
WARNING
■
If they are in an unsafe condition, parts of the
mowing head or mowing lines may come off
0458-856-0121-B 7
English 4 Safety Precautions
and be ejected at high speed. They may
cause serious injury to persons.
► Work only with an undamaged mowing
head.
► Never use metal objects in place of the
nylon mowing lines.
► Observe and remain inside the wear limits.
► If you have any doubts, be sure to consult a
STIHL dealer.
4.6.4 Metal cutting attachment
The metal cutting attachment is in a safe condi‐
tion if the following points are observed:
Metal cutting attachment and mounting hard‐
–
ware are undamaged.
Metal cutting attachment is not warped.
–
Metal cutting attachment is properly mounted.
–
Metal cutting attachment is correctly sharp‐
–
ened.
Cutting edges of the metal cutting attachment
–
have no burrs.
The wear limits are not exceeded.
–
If a metal cutting attachment not manufactured
–
by STIHL is used, it must not be heavier,
thicker, of a different shape, of a lower quality,
or larger in diameter than the largest metal
cutting attachment approved by STIHL.
WARNING
■
If it is not in an safe condition, parts of the
metal cutting attachment may come off and be
thrown at high speed. They may cause serious
injury to persons.
►
Never work with a damaged metal cutting
attachment or damaged mounting hard‐
ware.
►
Sharpen the metal cutting attachment cor‐
rectly.
► Deburr the cutting edges with a file.
► Have the metal cutting attachment bal‐
anced by a STIHL servicing dealer.
► Observe and remain inside the wear limits.
► Use a metal cutting attachment specified in
these instructions for use.
► If you have any doubts, be sure to consult a
STIHL dealer.
4.7 Fuel Mixture and Refueling
WARNING
■
This brushcutter requires a fuel mixture of gas‐
oline and two-stroke engine oil. Mixed fuel and
gasoline are extremely flammable. If fuel mix‐
ture or gasoline make contact with open fire or
hot objects, they can cause a fire or explo‐
sions. Persons may be seriously or fatally
injured and property may be damaged.
► Protect fuel mixture and gasoline from heat
and fire.
► Do not spill fuel mixture or gasoline.
► If fuel is spilled: Wipe up fuel with a cloth
and do not attempt to start engine until all
parts of the brushcutter are dry.
►
Do not smoke.
► Never refuel near a fire.
► Shut off the engine and allow it to cool
down before refueling.
► Start the engine at least 3 meters from the
fueling spot, outdoors only.
■ Inhaling fuel fumes and gasoline fumes can
have toxic effects.
► Avoid inhaling fuel fumes or gasoline
fumes.
► Refuel in a well-ventilated location.
■ The brushcutter becomes hot during opera‐
tion. The fuel expands and excess pressure
can build up in the tank. Fuel can escape as a
spray when the fuel tank cap is opened. The
escaping fuel can ignite. This may result in
serious injury to the user.
►
Allow the brushcutter to cool down first and
then open the fuel tank cap carefully.
■ Clothing that has been in contact with fuel or
gasoline will ignite more easily. Persons may
be seriously or fatally injured and property
may be damaged.
►
If your clothing comes into contact with fuel
or gasoline: Change your clothing.
■ Fuel mix, gasoline and two-stroke engine oil
can harm the environment.
► Do not spill fuel, gasoline or two-stroke
engine oil.
► Dispose of fuel mix, gasoline and two-
stroke engine oil in accordance with local
regulations and environmental require‐
ments.
■
Fuel, gasoline or two-stroke engine oil can
cause irritation if they come into direct contact
with the skin or eyes.
►
Avoid contact with fuel, gasoline and twostroke engine oil.
► If skin contact occurs: Wash affected areas
of skin with plenty of water and soap.
► If the event of contact with eyes: Rinse
eyes with plenty of water for at least
15 minutes and consult a doctor.
■
The brushcutter's ignition system produces
sparks. Unconfined sparks may cause a fire or
an explosion in an easily combustible or explo‐
sive environment. Persons may be seriously
8 0458-856-0121-B
4 Safety Precautions English
or fatally injured and property may be dam‐
aged.
► Use the spark plugs described in this
instruction manual.
► Insert and tighten down the spark plug.
► Connect the spark plug boot and press it
down firmly.
■ The brushcutter can become damaged if it is
run with a fuel mixture that includes unsuitable
gasoline or an unsuitable two-stroke engine
oil, and also if an incorrect mix ratio of gaso‐
line and two-stroke engine oil is used.
►
Mix the fuel as described in this User Man‐
ual.
■ The mixture of gasoline and two-stroke engine
oil can separate or age if it is stored for a long
period. The brushcutter can be damaged if it is
used with a fuel mix that has become separa‐
ted or has aged.
►
Before refueling the brushcutter: Thor‐
oughly mix the fuel.
► Use a mixture of gasoline and two-stroke
engine oil that is not older than 30 days
(STIHL MotoMix: 5 years).
4.8 Working
WARNING
■
If the engine is not started properly, the user
may lose control of the trimmer. This may
result in serious injury to the user.
►
Start the engine as described in this instruc‐
tion manual.
► If the cutting attachment is touching the
ground or objects: Do not start the engine.
■
If the start flap lever is in the position when
the engine is started, the engine speed is
higher than the idle speed and the cutting
attachment can rotate as soon as the engine
is running. This may result in serious injury to
the user.
►
Do not touch the cutting attachment.
► Start the engine as described in this instruc‐
tion manual.
■ In certain situations, the user may no longer
be able to concentrate on their work. The user
can lose control of the trimmer, stumble or fall
and be seriously injured.
►
Keep calm and plan your work.
► If light and visibility are poor: Do not use
your trimmer.
► Operate the trimmer alone.
► Keep the cutting attachment close to the
ground.
► Watch out for obstacles.
► Work standing on the ground and keep your
balance.
► If you start feeling fatigue: Take a break.If
you start feeling fatigue: Take a break.
■ Exhaust gas is produced when the engine is
running. Breathing in exhaust gas can have
toxic effects.Breathing in exhaust gas can
have toxic effects.
►
Avoid inhaling exhaust gas.
► Operate the trimmer is a well ventilated
location.
► In the event of nausea, headache, visual
disturbances, problems with hearing or diz‐
ziness: Stop work and seek medical advice.
■
The user’s ability to hear and assess noises is
restricted when wearing hearing protection
with the engine running.
►
Keep calm and plan your work.
■ In case of working with the trimmer and the
start flap lever is in the position
cannot work with the power brush in a control‐
led manner. This may result in serious injury to
the user.
►
Check that the choke lever is in position
during operation.
► Start the engine as described in this instruc‐
tion manual.
■ The rotating cutting attachment can cut the
user. This may result in serious injury to the
user.
►
Do not touch the rotating cutting attach‐
ment.
► If the cutting attachment is blocked by an
object: Shut off the engine. Before clearing
the jam.
■
If you work with mowing lines that are too
long, the brush cutter may be damaged.
► Use a suitable deflector with attached line
limiting blade.
■ The machine can be damaged if you open the
throttle while the cutting attachment is blocked
by an object.
►
Shut off the engine. before clearing the jam.
■ If the behavior of the trimmer changes during
operation or feels unusual, it may no longer be
in a safe condition. This may result in serious
injury to people and damage to property.
►
Stop work and consult a STIHL servicing
dealer.
■ Trimmer vibrations may occur during opera‐
tion.
► Wear gloves.
, the user
0458-856-0121-B 9
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