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
0000-GXX-3025-A1
English 4 Safety Precautions
► Take breaks.
► If signs of a circulatory disturbance occur:
Consult a doctor.
■ If the cutting attachment makes contact with a
foreign object during operation, the object or
parts of it may be thrown at high speed. Per‐
sons may be injured or property damaged.
►
Remove foreign objects from the working
area.
■ If the rotating cutting attachment makes con‐
tact with a hard object, sparks may occur and
the cutting attachment may be damaged.
Sparks can cause fires in a flammable envi‐
ronment. Persons may be seriously or fatally
injured and property may be damaged.
►
Do not use in a flammable environment.
► Make sure the cutting attachment is in a
safe condition.
■ Note that the cutting attachment continues to
rotate for a short period after you release the
trigger. They may cause serious injury to per‐
sons.
►
Wait until the cutting attachment comes to a
complete stop.
■ In an emergency, the user may start to panic
and forget to take off the carrying system. This
may result in serious injury to the user.
►
Practice taking off the carrying system.
4.9 Reactive Forces
►
Hold the trimmer firmly with both hands.
► Use the working techniques described in
this instruction manual.
► Do not use the black area for cutting.
► Use a combination of cutting attachment,
deflector and carrying system recommen‐
ded in this instruction manual.
►
Sharpen the metal cutting attachment cor‐
rectly.
► Cut with the motor running at full speed.
4.10 Transporting
WARNING
■ The gearbox can get hot during operation.
There is a risk of burn injuries.
► Do not touch a hot gearbox.
■ The trimmer may turn over or shift during
transport. This may result in personal injuries
and damage to property.
►
Shut off the engine.
► If a metal cutting attachment is mounted: Fit
the transport guard.
► Secure the trimmer with lashing straps or a
net to prevent it turning over and moving.
■ The muffler and engine may be hot after a
period of operation. There is a risk of burn
injuries.
►
Carry the trimmer properly balanced by the
drive tube with the cutting attachment
behind you.
4.11 Storing
WARNING
■
Children are not aware of and cannot assess
the dangers of a trimmer and can be seriously
injured.
►
Shut off the engine.
Kickout can be caused for the following reasons:
The shaded area or the black area of the rotat‐
–
ing metal cutting attachment comes into con‐
tact with a solid object and is suddenly braked.
The rotating metal cutting attachment gets
–
pinched in the cut.
The risk of kickout is greatest in the black area.
WARNING
■
These situations can abruptly decelerate or
stop rotation of the cutting attachment and
cause the cutting attachment to be thrown to
the right or in the direction of the user (black
arrow). The user can lose control of the trim‐
mer. This can result in serious or fatal injuries.
10 0458-856-0121-B
► If a metal cutting attachment is mounted: Fit
the transport guard.
► Store the trimmer out of the reach of chil‐
dren.
■ Dampness can corrode the electrical contacts
on the trimmer and metal components. This
can damage the trimmer.
►
Store the trimmer in a clean and dry condi‐
tion.
4.12 Cleaning, Maintenance and
Repair
WARNING
■
The cutting attachment can start rotating unin‐
tentionally if the engine is running during
cleaning, maintenance or repair operations.
7
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0000097393_001
5 Preparing Trimmer for Operation English
This may result in serious injury to people and
damage to property.
► Shut off the engine.
■ The muffler and engine may be hot after a
period of operation. This can result in burn
injuries.
►
Wait until the muffler and engine cool down.
■ The gear housing can get hot during opera‐
tion. There is a risk of burn injuries.
► Do not touch a hot gear housing.
■ Aggressive cleaning agents, a water jet or
pointed objects can damage the trimmer,
deflector or the cutting attachment. If the trim‐
mer, deflector and cutting attachment are not
cleaned correctly, components may no longer
function properly or safety devices may be
rendered inoperative. They may cause serious
injury to persons.
► Clean the trimmer, deflector and cutting
attachment as described in this instruction
manual.
■
If the trimmer, deflector and cutting attachment
are not serviced or repaired correctly, compo‐
nents may no longer function properly or
safety devices may be rendered inoperative.
This may result in serous or fatal injury to peo‐
ple.
►
Do not attempt to service or repair the trim‐
mer or deflector.
► If the trimmer or the deflector require servic‐
ing or repairs: Contact your STIHL servicing
dealer for assistance.
►
Maintain the cutting attachment as descri‐
bed in the User Manual supplied with the
cutting attachment being used or on the
cutting attachment’s packaging.
■
The user can be cut by the sharp cutting
edges while cleaning or maintaining cutting
attachments. This may result in injury to the
user.
► Wear work gloves made from resist‐
ant material.
5 Preparing Trimmer for
Operation
5.1 Preparing the Brushcutter for
The following steps must be performed before
commencing work:
0458-856-0121-B 11
Operation
► Ensure that the following components are in
safe condition:
–
Brushcutter, 4.6.1.
–
Deflector, 4.6.2.
Mowing head or metal cutting attachment,
–
4.6.3 or 4.6.4.
►
Clean the brushcutter,
►
Mount the bike handle, 6.1.
► Select combination of cutting attachment,
deflector and carrying system, 20.
►
Mount the deflector, 6.2.
► Mount mowing head or metal cutting attach‐
ment, 6.3.1 or 6.4.
►
Fuel the trimmer, 8.2.
►
Fit and adjust the carrying system, 7.1.
►
Adjust the bike handle, 7.2.
►
Balance the brushcutter, 7.3.
►
Check the controls, 10.1.
► If you cannot carry out this work: Do not use
your brushcutter and contact your STIHL
dealer for assistance.
15.1.
6 Assembling the Trimmer
6.1 Mounting the Bike Handle
► Shut off the engine.
► Open the clamp of the toggle screw (1) and
turn it counterclockwise until the handle tube
(2) is only slightly clamped.
► Insert the spring (5) from below into the lower
clamp molding (4).
► Place the clamp shells (3 and 4) on the shaft
and insert the wing screw (1).
► Pivot the handlebar (2) up and align it so that
distance (A) is about 16 cm.
In doing so, do not clamp the curved part of
the handlebar (2).
► Tighten the wing screw (1) and close the
clamp.
► Remove the screw (6).
► Position the control handle (8) on the handle‐
bar (2), trigger facing the gear housing, and
line up the hole in the control handle with the
hole in the handlebar.
When doing so, do not twist the operating han‐
dle (8).
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English 6 Assembling the Trimmer
► Fit the nut (7).
► Insert and tighten down the screw (6) firmly.
It is not necessary to remove the bike handle
again.
6.2 Removing the Deflector and the Limit Stop
6.2.1 Attaching guard for mowing heads,
metal cutting tools and stop
► Shut off the engine.
► Press plugs (4) into the threaded holes on the
gear unit housing.
The threaded holes are protected from dirt.
6.2.4 Dismantling the guard for shredder
blades
► Shut off the engine.
► Take out screws.
► Remove guard.
► Pull the plug out of the threaded holes on the
gear unit housing and press it into the threa‐
ded holes of the bracket.
The threaded holes of the bracket are protec‐
ted against dirt.
6.3 Mounting and Removing the
Mowing Head
6.3.1 Mounting the Mowing Head
► Shut off the engine.
► Position the guard (1) on the gear housing.
► Insert the screws (2) and tighten them down to
a torque of 10 Nm.
6.2.2 Removing deflector for mowing heads,
► Shut off the engine.
► Take out screws.
► Remove guard.
6.2.3 Mounting deflector for shredder blade
An additional holder is required on the shaft to
attach the deflector. The holder is attached to the
shaft with special screws and special tools.
► Shut off the engine.
► If the holder for the guard has not yet been fit‐
► Place the guard (1) on the holder (2) so that
► Insert the screws (3) and tighten them down to
12 0458-856-0121-B
metal cutting attachments and limit
stop
ted to the shaft: Have the holder fitted by a
STIHL dealer.
the curved side faces inwards towards the
gear unit housing.
a torque of 10 Nm.
► Place the thrust plate (2) on the shaft (3) so
that its smaller diameter faces up.
► Fit the mowing head (1) on the shaft (3) and
turn it counterclockwise by hand.
► Insert the stop pin (4) in the bore up to the limit
stop and hold it depressed.
► Turn the mowing head (1) counterclockwise
until the stop pin (4) engages in position.
The shaft (3) is now blocked.
► Tighten down the mowing head (1) firmly by
hand.
► Remove the stop pin (4).
6.3.2 Removing the Mowing Head
► Shut off the engine.
► Insert the stop pin in the bore as far as stop
and hold it depressed.
► Rotate the mowing head until the stop pin
engages in position.
The shaft is now blocked.
► Unscrew the mowing head clockwise.
► Remove the thrust plate.
► Remove stop pin.
7
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6 Assembling the Trimmer English
6.4 Removing and Installing Metal Cutting Attachment
6.4.1 Mounting grass cutting blade, brush
► Shut off the engine.
► Place the thrust plate (5) on the shaft (6) so
► Place the metal cutting attachment (4) on the
► Place the thrust washer (3) on the metal cut‐
► Place the rider plate (2) on the thrust washer
► Insert the stop pin (7) in the bore up to the limit
► Rotate the metal cutting attachment (4) coun‐
► Fit the nut (1) counterclockwise and tighten it
► Remove the stop pin (7).
6.4.2 Mounting Brush Knives or Shredder
► Shut off the engine.
0458-856-0121-B 13
knife or circular saw blade
that its smaller diameter faces up.
thrust plate (5). If you are fitting a circular saw
blade or a grass cutting blade with more than
4 cutting edges: Its cutting edges must face in
the same direction as the arrow on the deflec‐
tor.
ting attachment (4) so that its raised side faces
up.
(3) so that its closed side faces up.
stop and hold it depressed.
terclockwise until the stop pin (7) engages in
position.
The shaft (6) is now blocked.
down firmly.
Blades
► Place the thrust plate (5) on the shaft (6) so
that its smaller diameter faces up.
► Place the metal cutting attachment (4) on the
thrust plate (5). If a shredder bladee is used:
Align cutting edges so that they point away
from the gear unit in the direction of the nut
(1).
► Place the thrust washer (3) on the metal cut‐
ting attachment (4) so that its raised side faces
up.
► Place the protective ring (2) on the thrust
washer (3) so that the opening points
upwards.
► Insert the stop pin (7) in the bore as far as
stop and hold it depressed.
► Rotate the metal cutting attachment (4) coun‐
terclockwise until the stop pin (7) engages in
position.
The shaft (6) is now blocked.
► Fit the nut (1) counterclockwise and tighten it
down firmly.
► Remove the stop pin (7).
6.4.3 Removing the metal cutting attach‐
ment
► Shut off the engine.
► Insert the stop pin in the bore up to the limit
stop and hold it depressed.
► Rotate the metal cutting attachment clockwise
until the stop pin engages in position.
The shaft is now blocked.
► Unscrew the mounting nut clockwise.
► Remove the fastening parts, metal cutting tool
and pressure plate.
► Remove the stop pin.
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English 7 Adjusting Trimmer for User
7 Adjusting Trimmer for User
7.1 Fitting and Adjusting the Full Harness
► Hook the carrying strip (2) onto the carabi‐
ner (1).
► Wait for brushcutter to stop swinging.
► Check the position of cutting attachment. If it
► Putting on the Full harness (1).
► Adjust the full harness (1) so that the carabi‐
ner (2) is about a hand’s width below your
right hip.
7.2 Adjusting the Bike Handle
The bike handle can be set to different positions
to suit the height and reach of the user.
► Shut off the engine.
► Hook the brushcutter from the carrying strip
into the carabiner of the carrying system.
► Loosen the wing screw (1).
► Swing the bike handle (2) to the required posi‐
tion.
► Tighten down the wing screw (1) firmly.
7.3 Balancing the Brushcutter
The cutting attachment should rest lightly on the
ground.
► Shut off the engine.
14 0458-856-0121-B
needs adjustment: Hook the carabiner (1) into
another hole in the hole bar (2) and let it swing
out again.
8 Mixing Fuel and Refueling
the Brushcutter
8.1 Mixing fuel
The fuel required for this trimmer is a mixture of
gasoline and two-stroke engine oil, in a mixing
ratio of 1:50.
STIHL recommends you use STIHL MotoMix.
If you mix the fuel yourself, use only STIHL twostroke engine oil or another high-performance
engine oil in accordance with JASO FB, JASO
FC, JASO FD, ISO-L-EGB, ISO-L-EGC or ISO-LEGD.
STIHL specifies STIHL HP Ultra two-stroke
engine oil or an equivalent high-performance
engine oil in order to maintain emission limits
over the machine’s service life.
► Make sure that the octane number of the gas‐
oline is at least 90 RON and the ethanol con‐
tent is not more than 10% (for Brazil: 27%).
► Make sure the two-stroke engine oil you are
using meets requirements.
► Depending on the desired amount of fuel,
determine the correct amounts of two-stroke
engine oil and gasoline in a mixing ratio of
1:50. Examples for fuel mixes:
20 ml Two-stroke engine oil, 1 l gasoline
–
60 ml Two-stroke engine oil, 3 l gasoline
–
100 ml Two-stroke engine oil, 5 l gasoline
–
► Pour two-stroke engine oil into a clean
approved fuel canister first and then add gaso‐
line.
► Stir the fuel before topping up.
8.2 Fueling the brushcutter
► Shut off the engine.
0000099186_001
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9 Starting and Stopping the Engine English
► Place your brushcutter on a level surface so
that the fuel tank cap faces up.
► Use a damp cloth to clean the fuel tank cap
and the area around it.
► Depress the manual fuel pump (1) at least 5
times.
► If the engine is warm: Leave the choke lever
► Turn the tank cap counterclockwise until it can
be removed.
► Remove the fuel tank cap.
(2) in position
► If the engine is at ambient temperature: Push
in the choke lever (2) at the edge and set it in
position
.
.
NOTICE
■ Exposure to light, direct sunlight and extreme
temperatures may accelerate fuel separation
or aging. The brushcutter can be damaged if it
is used with a fuel mix that has become sepa‐
rated or has aged.
►
Thoroughly mix the fuel.
► Do not top up with fuel stored for more than
30 days (STIHL MotoMix: 5 years).
► When topping up, ensure that no fuel is spil‐
led and that the fuel level remains at least
15 mm under the edge of the tank.
NOTICE
■ The brushcutter can be damaged if you press
it into the ground with your foot or knee .
► Press the brushcutter against the ground
with your left hand. Do not stand or kneel
on the shaft.
► Press the brushcutter against the ground with
your left hand.
► Pull the starter grip slowly with your right hand
until you feel it engage.
► Pull the starter grip quickly and allow the
► Fit the fuel tank cap on the tank opening.
► Turn the tank cap clockwise and tighten it
down firmly by hand.
The fuel tank is closed.
9 Starting and Stopping the
Engine
9.1 Starting the engine
► Place the trimmer on a level surface so that
the cutting attachment does not touch the
ground or other objects.
► Remove the transport guard.
starter rope to rewind several times until the
engine runs.
►
If the choke lever (2) is in the position
:
briefly press the throttle lever lockout (3) and
the throttle trigger (4).
The choke lever (2) springs to position . The
engine runs at idling speed.
► If the engine is cold: Warm up engine by
briefly opening the throttle.
► If the cutting attachment rotates when the
engine is idling: Rectify the malfunction.
Throttle cable adjustment is not correct.
► If the engine does not start: Move the choke
lever (2) to position and try again to start
the engine.
0458-856-0121-B 15
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English 10 Testing the Trimmer
► If the engine is flooded: Try to start the engine
again with the choke lever (2) in the
position.
9.2 Shut off the engine
► Release the throttle trigger (1) and throttle trig‐
ger lockout (2).
The cutting attachment comes to a standstill.
► Depress the stop switch (3).
The engine stops.
► If the engine does not stop:
►
Move the choke lever to position
The engine stops.
► Do not use your trimmer and contact a
STIHL servicing dealer for assistance.
There is a malfunction in the brushcutter.
As long as the stop switch is pressed, the ignition
is switched off. After the stop switch has been
released again, the ignition is switched on again.
.
10 Testing the Trimmer
► If the engine accelerates: Adjust the throttle
cable.
Throttle cable adjustment is not correct.
Shut off the engine
► Start the engine.
► Depress the stop switch.
The engine stops.
► If the engine does not stop:
►
Move the choke lever to position
The engine stops.
► Do not use your trimmer and contact a
STIHL servicing dealer for assistance.
The brushcutter is defective.
.
11 Operating the Trimmer
11.1 Setting to winter mode
The carburetor may ice up if the engine is oper‐
ated at temperatures below +10 °C. The shutter
must be set to the winter mode so that the carbu‐
retor is additionally heated by warm air from
around the engine.
NOTICE
■ The engine may overheat if is operated in win‐
ter mode at temperatures above +10 °C.
► Change setting to summer mode.
► Shut off the engine.
10.1 Checking the controls
Throttle trigger lockout and throttle trigger
► Shut off the engine.
► Attempt to pull the trigger without depressing
the lockout lever.
► If the trigger can be pulled: Do not use your
trimmer and contact your STIHL dealer for
assistance.
The throttle trigger lockout is defective.
► Press the throttle trigger lockout and keep
pressed.
► Depress the throttle trigger.
► Release the throttle trigger and throttle trigger
lockout.
► If the trigger or trigger lockout is stiff or does
not spring back to the idle position: Do not use
your trimmer and contact your STIHL dealer
for assistance.
Trigger or trigger lockout is faulty.
Throttle cable adjustment
► Start the engine.
► Attempt to pull the trigger without depressing
the lockout lever.
► Take out the screw (1).
► Pull out the shutter (2).
► Hold the shutter (2) so the snowflake points to
the mark (3).
► Insert the shutter (2).
► Fit the screw (1).
When working at temperatures below -10°C or in
powder or drifting snow, a cover plate must also
be fitted to the engine housing and an air filter
with plastic webbing. The accessories are availa‐
ble from a STIHL servicing dealer.
11.2 Summer Operation
The shutter must be set to summer mode when
working at temperatures above +10°C.
16 0458-856-0121-B
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11 Operating the Trimmer English
► Shut off the engine.
NOTICE
■ The calibration process is aborted if the throt‐
tle trigger is released before the trigger is
properly calibrated. It is then necessary to
restart the calibration process.
►
Keep the throttle trigger fully depressed.
NOTICE
► Take out the screw (1).
► Pull out the shutter (2).
► Hold the shutter (2) so the sun points to the
mark (3).
► Fit the shutter.
► Fit the screw (1).
11.3 Calibrating the brushcutter
The trimmer adjusts itself automatically for opti‐
mum performance during operation. Calibration
enables the brushcutter to be adjusted to run
faster for optimum performance.
► If the outside temperature is below -10°C or
the engine is cold:
► Start the engine.
► Fit the carrying system.
► Hold and guide the brushcutter.
► Warm up the engine at full throttle for about
1 minute.
► Shut off the engine.
► Remove the cutting attachment.
This allows the brushcutter to reliably adjust
itself to the optimum performance.
■ The trimmer can be incorrectly calibrated if the
throttle trigger is not kept fully depressed dur‐
ing calibration. This can damage the brushcut‐
ter.
►
Keep the throttle trigger fully depressed.
► Depress the throttle trigger for at least 40
seconds (B) and hold it in that position.
The engine accelerates and the trimmer is
calibrated. The engine speed fluctuates and
increases perceptibly during calibration.
► If the engine stalls: Make another attempt to
calibrate the trimmer.
► If the engine stops repeatedly: Do not use
your trimmer and contact your STIHL servicing
dealer for assistance.
The brushcutter is defective.
► As soon as the engine speed drops noticeably
(C): Release the throttle trigger.
The engine runs at idling speed. The brushcut‐
ter is calibrated and ready for use.
► Shut off the engine.
► Mount the cutting attachment.
11.4 Holding and Controlling the
Brushcutter
►
Move the choke lever to position
► Start the engine without depressing the throttle
trigger.
The engine runs and the choke lever remains
in position
.
.
► Hook the carrying strip (2) onto the carabi‐
ner (1).
► Run the engine for at least 30 seconds but no
more than 60 seconds (A) without depressing
the throttle trigger.
► Hold and guide the brushcutter in such a way
that the gearbox does not touch the ground or
other objects.
0458-856-0121-B 17
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English 12 After Finishing Work
► Do not lift metal cutting tool above waist
height.
11.7 Saws with a circular saw blade
► Hold the brushcutter firmly with your right hand
on the control handle – wrap your thumb
around the handle.
► Hold the brushcutter with your the left hand on
the left grip in such a way that your thumb
encloses the handle.
11.5 Mowing
The cutting height is determined by the distance
► Support the left side of the deflector against
the stem.
► Cut through the stem at full speed.
► A safety distance of at least 2 tree lengths to
the next work area.
of the cutting attachment from the ground.
11.8 Adjusting Nylon Line
11.8.1 Line Feed on AutoCut Mowing Head
► Tap the rotating mowing head on the ground.
About 30 mm of fresh nylon line is advanced.
The line limiting blade in the deflector trims the
mowing lines to the correct length.
Mowing with a mowing head (A)
► Swing the brushcutter steadily back and forth
in an arc.
► Move forward slowly in a controlled manner.
Mowing with a grass cutting blade or brush
knife (B)
► Mow with the left-hand side on the metal cut‐
ting attachment.
► Move forward slowly in a controlled manner.
11.6 Thinning with a brush knife or shredder blade
Automatic feed does not operate if the mowing
lines are shorter than 25 mm.
► Shut off the engine.
► Depress the spool (1) on the mowing head
and hold it depressed.
► Pull out the mowing lines (2).
► If the mowing lines (2) cannot be pulled out to
the required length: Replace the spool (1) or
the mowing lines (2).
The spool is empty.
12 After Finishing Work
► Dip the metal cutting attachment into the
thicket from above.
18 0458-856-0121-B
12.1 When Work is Finished
► Shut off the engine.
► Allow trimmer to cool down.
► If the brushcutter is wet: Allow the brushcutter
to dry.
► Clean the brushcutter.
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13 Transporting English
► Clean the deflector.
► Clean the cutting attachment.
► If a metal cutting attachment is mounted: Fit
the matching transport guard.
13 Transporting
13.1 Transporting the Trimmer
► Shut off the engine.
► If a metal cutting attachment is mounted: Fit
the matching transport guard.
Carrying the trimmer
► Carry the trimmer properly balanced by the
drive tube with the cutting attachment behind
you.
Transporting the trimmer in a vehicle
► Secure the trimmer to prevent turnover and
movement.
14 Storing
14.1 Storing the Brushcutter
► Shut off the engine.
► If a metal cutting attachment is mounted: Fit
the matching transport guard.
► Loosen the wing screw (1) and unscrew it until
the handlebar (2) can be rotated.
► Turn the handlebar (2) clockwise through 90°
and fold it down.
► Tighten down the wing screw (1) firmly.
► Ensure that the following conditions are met
when storing the brushcutter:
The brushcutter is out of the reach of chil‐
–
dren.
The brushcutter is clean and dry.
–
► If you store the trimmer for more than 30 days:
► Remove the cutting attachment.
► Open the fuel tank cap.
► Drain the fuel tank.
► Close the fuel tank.
► If a manual fuel pump is fitted: Press the
manual fuel pump at least 5 times.
► Start the engine and run it at idling speed
until it stops.
15 Cleaning
15.1 Cleaning the Trimmer
► Shut off the engine.
► Allow trimmer to cool down.
► Clean the trimmer with a damp cloth or STIHL
resin solvent.
► Clean cooling air slots with a soft brush.
15.2 Cleaning the Deflector and Cut‐
ting Attachment
► Shut off the engine.
► Clean the deflector and cutting attachment
with a damp cloth or a soft brush.
16 Maintenance
16.1 Maintenance intervals
Maintenance intervals depend on the ambient
conditions and the operating conditions. STIHL
recommends the following maintenance inter‐
vals:
Before mounting a cutting attachment
► Check whether gear grease has leaked from
the shaft.
► If gear grease has leaked out: Have the level
in the gear housing checked by a STIHL serv‐
icing dealer.
After every 100 hours of operation
► Replace the spark plug.
Monthly
► Have the fuel tank cleaned by a STIHL dealer.
► Have the pickup body in the fuel tank cleaned
by a STIHL dealer.
Annually
► Have the pickup body in the fuel tank replaced
by a STIHL dealer.
16.2 Sharpening and Balancing a Metal Cutting Attachment
Correctly sharpening and balancing metal cutting
attachments requires a lot of practice.
STIHL recommends you have metal cutting
attachments resharpened and balanced by a
STIHL servicing dealer.
► Sharpen the metal cutting attachment as
described in the instructions and on the pack‐
aging supplied with the cutting attachment you
are using.
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English 17 Repairing
17 Repairing
attachment and contact your STIHL servicing
dealer.
17.1 Repairing the Trimmer and Cutting Attachment
The trimmer and cutting attachment cannot be
repaired by the user.
► If the trimmer or cutting attachment is dam‐
aged: Do not use your trimmer or cutting
18 Troubleshooting
18.1 Troubleshooting the Brushcutter
Most problems can be attributed to the same cause.
► Carry out the following measures:
► Replace the air filter.
► Clean or replace the spark plug.
► Adjust saw for winter or summer operation.
► If the problem continues: Carry out the measured listed below.
Fault Cause Remedy
The engine does not
start.
The engine idles
erratically.
The engine stops
while idling.
The engine does not
reach maximum
speed.
The engine switches
off although there is
still fuel in the fuel
tank.
18.2 Replacing air filter
The air filter cannot be cleaned. The air filter
must be replaced if it is damaged or there is a
loss of engine power.
► Shut off the engine.
►
Move the choke lever to position
There is not enough
fuel in the fuel tank.
The carburetor is too
hot.
The carburetor has
iced up.
The carburetor has
iced up.
The carburetor has
iced up.
Trimmer is not cor‐
rectly tuned to ambi‐
ent conditions.
Throttle cable is not
correctly adjusted.
The pickup body is
not located in the
right place.
.
► Prepare fuel mix and refuel the trimmer.
► Allow trimmer to cool down.
► Depress the manual fuel pump at least 10 times
before starting the engine.
► Allow trimmer to warm up to +10°C.
► Allow trimmer to warm up to +10°C.
► Allow trimmer to warm up to +10°C.
► Calibrate the brushcutter.
► Adjust the throttle cable.
► Contact a STIHL servicing dealer.
► Take out the screws (1) and remove the filter
cover (2).
► Clean the area around the air filter (3) with a
damp cloth or a soft brush.
► Take out the air filter (3).
► Install the new air filter (3).
20 0458-856-0121-B
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19 Specifications English
► Fit the filter cover (2).
► Insert screws (1) and tighten.
18.3 Cleaning the Spark Plug
► Shut off the engine.
► Allow trimmer to cool down.
Electrode gap of the spark plug: 0.5 mm
–
Dry weight without cutting attachment and
–
deflector: 10.2 kg
Length without cutting tool: 1,760 mm
–
Max. fuel tank capacity: 990 cc (0.99 l)
–
19.2 Brushcutter STIHL 561 C-M
Displacement: 57.1 cm³
–
Engine power to ISO 8893: 2.8 kW (3.8 bhp)
–
at 9,500 rpm
Idle speed : 2,500 rpm
–
Max. output shaft speed: 7,890 rpm
–
Approved spark plug: NGKBPMR7A from
–
STIHL
Electrode gap of the spark plug: 0.5 mm
–
Dry weight without cutting attachment and
► Turn screw (1) counterclockwise.
► Lift the cover (2) and push it backwards.
► Pull off the spark plug boot (3).
► If the area around the spark plug (4) is soiled:
Clean the spark plug (4) with a cloth.
► Unscrew the spark plug (4).
► Clean the spark plug (4) with a cloth.
► If the spark plug (4) is corroded: Install a new
spark plug (4).
► Insert and tighten down the spark plug (4)
firmly.
► Press the spark plug boot (3) firmly home.
► Install cover (2) and tighten screw (1).
18.4 Adjusting the Throttle Cable
► Press the throttle trigger (1) and keep pressed.
► Turn screw (2) clockwise until resistance is
felt.
► Turn the screw (2) clockwise through another
half-turn.
19 Specifications
19.1 Brushcutter STIHL FS 511 C-M
Displacement: 51.6 cm³
–
Engine power to ISO 8893: 2.4 kW (3.3 bhp)
–
–
–
–
0458-856-0121-B 21
at 9,500 rpm
Idle speed : 2,500 rpm
Max. output shaft speed: 7,890 rpm
Approved spark plug: NGKBPMR7A from
STIHL
–
deflector: 10.2 kg
Length without cutting tool: 1,760 mm
–
Max. fuel tank capacity: 990 cc (0.99 l)
–
19.3 Sound Values and Vibration Values
The K-value for sound pressure levels is 2 dB(A).
K-value for sound power levels is 2 dB(A). The
K-value for vibration level is 2 m/s².
Using with a mowing head
FS 511 C-M
Sound pressure level LpA measured according
–
to ISO 22868: 101 dB(A).
Sound power level LwA measured according to
–
ISO 22868: 114 dB(A).
Vibration level ahv measured according to
–
ISO 22867:
Control handle: 3.7 m/s².
–
Left handle: 3.7 m/s².
–
FS 561 C-M
Sound pressure level LpA measured according
–
to ISO 22868: 101 dB(A).
Sound power level LwA measured according to
–
ISO 22868: 115 dB(A).
Vibration level ahv measured according to
–
ISO 22867:
Control handle: 3.7 m/s².
–
Left handle: 3.7 m/s².
–
Using with a metal cutting attachment
FS 511 C-M
Sound pressure level LpA measured according
–
to ISO 22868: 101 dB(A).
Sound power level LwA measured according to
–
ISO 22868: 115 dB(A).
Vibration level ahv measured according to
–
ISO 22867:
English 20 Combinations of Cutting Attachments, Deflectors and Carrying Systems
Control handle: 3.0 m/s².
–
Left handle: 3.0 m/s².
–
FS 561 C-M
Sound pressure level LpA measured according
–
to ISO 22868: 102 dB(A).
Sound power level LwA measured according to
–
ISO 22868: 115 dB(A).
Vibration level ahv measured according to
–
ISO 22867:
Control handle: 3.3 m/s².
–
Left handle: 3.3 m/s².
–
For information on compliance with Employers'
Vibration Directive 2002/44/EC see
www.stihl.com/vib.
19.4 REACH
REACH is an EC regulation and stands for the
Registration, Evaluation, Authorisation and
Restriction of Chemical substances.
For information on compliance with the REACH
regulation see www.stihl.com/reach.
19.5 Exhaust Emissions
The CO2value measured in the EU type approval
procedure is specified at www.stihl.com/co2.
The measured CO2value was determined on a
representative engine in accordance with a
standardized test procedure under laboratory
conditions and does not represent either an
explicit or implied guarantee of the performance
of a specific engine.
The applicable exhaust emission requirements
are fulfilled by the intended usage and mainte‐
nance described in this instruction manual. The
type approval expires if the engine is modified in
any way.
20 Combinations of Cutting Attachments, Deflectors and Carrying
Systems
20.1 Combinations of Cutting Attachments, Deflectors and Carrying Systems
Cutting attachment Deflector Carrying System
AutoCut 56-2 mowing head
–
DuroCut 40-4 mowing head
–
Mowing head TrimCut C 52-2
–
Grass cutting blade 250-32
–
"Special" (250 mm dia.)
Grass cutting blade 250-40
–
"Special" (250 mm dia.)
Grass cutting blade 255-8
–
(255 mm dia.)
Brush knife 305-2 "Special"
–
(305 mm dia.)
Brush knife 350-3 (Ø 350 mm)
–
Brush knife 350-3 "Special"
–
(350 mm dia)
Shredder blade 320-2 (320
–
mm dia.)
Circular saw blade 225-48
–
scratcher tooth (225 mm dia.)
Chisel tooth circular saw blade
–
225-22 HP (225 mm dia.)
Circular saw blade 225-24,
–
chisel tooth (225 mm dia.)
Circular saw blade 225-36,
–
carbide (225 mm dia.)
Circular saw blade 250-26,
–
chisel tooth (250 mm dia)
Deflector for mowing heads with diame‐
–
ter 480 mm
Deflector for mowing heads with diame‐
–
ter 560 mm
Deflector for metal cutting attachments
–
Deflector for metal cutting attachments
–
Guard for shredder blades
–
Limit stop with diameter 225 mm
–
Limit stop with diameter 250 mm
–
Full harness with
–
quick release sys‐
tem
22 0458-856-0121-B
21 Spare Parts and Accessories
English
21 Spare Parts and Accesso‐
ries
21.1 Spare parts and accessories
These symbols indicate original STIHL
spare parts and original STIHL acces‐
sories.
STIHL recommends the use of original STIHL
spare parts and accessories.
Despite ongoing market observation, STIHL is
unable to judge the reliability, safety and suitabil‐
ity of other manufacturers' spare parts and
accessories; accordingly, STIHL cannot warrant
for the use of those parts.
Original STIHL spare parts and original STIHL
accessories are available from STIHL dealers.
22 Disposal
22.1 Disposing of the Brushcutter
Contact the local authorities or your STIHL
dealer for information on disposal.
Improper disposal can be harmful to health and
pollute the environment.
► Take STIHL products including packaging to a
suitable collection point for recycling in accord‐
ance with local regulations.
► Do not dispose with domestic waste.
23 EC Declaration of Con‐
formity
23.1 Brushcutter STIHL FS 511 CM, FS 561 C-M
ANDREAS STIHL AG & Co. KG
Badstraße 115
D-71336 Waiblingen
Germany
declare under our sole responsibility that
Category: Brushcutter
–
Manufacturer's brand: STIHL
–
Type: FS 511 C-M, FS 561 C-M
–
Serial number: 4148
–
conforms to the relevant provisions of Directives
2011/65/EU, 2006/42/EC, 2014/30/EU and
2000/14/EC and has been developed and manu‐
factured in compliance with the following stand‐
ards in the versions valid on the date of produc‐
tion: EN ISO 11806-1, EN 55012 and
EN 61000‑6‑1.
The measured and guaranteed sound power lev‐
els were determined according to Directive
2000/14/EC, Annex V.
FS 511 C-M
Measured sound power level: 115 dB(A)
–
Guaranteed sound power level: 117 dB(A)
–
FS 561 C-M
Measured sound power level: 116 dB(A)
–
Guaranteed sound power level: 118 dB(A)
–
The technical documents are stored at
ANDREAS STIHL AG & Co. KG Produktzulas‐
sung.
The year of manufacture, country of manufacture
and serial number are shown on the rating plate
of the brushcutter.
Done at Waiblingen, 15.07.2021
ANDREAS STIHL AG & Co. KG
pp
Dr. Jürgen Hoffmann, Director Product Certifica‐
tion & Regulatory Affairs
24 UKCA Declaration of Con‐
formity
24.1 Brushcutter STIHL FS 511 CM, FS 561 C-M
ANDREAS STIHL AG & Co. KG
Badstraße 115
D-71336 Waiblingen
Germany
declare under our sole responsibility that
Category: Brushcutter
–
Manufacturer's brand: STIHL
–
Type: FS 511 C-M, FS 561 C-M
–
Serial identification number: 4148
–
conforms to the relevant provisions of UK regula‐
tions The Restriction of the Use of Certain Haz‐
ardous Substances in Electrical and Electronic
Equipment Regulations 2012, Supply of Machi‐
nery (Safety) Regulations 2008, Electromagnetic
Compatibility Regulations 2016 and Noise Emis‐
sion in the Environment by Equipment for use
Outdoors Regulations 2001 and has been manu‐
0458-856-0121-B 23
English 24 UKCA Declaration of Conformity
factured in compliance with the following stand‐
ards in the versions valid on the date of produc‐
tion: EN ISO 11806‑1, EN 55012, and
EN 61000‑6‑1.
The measured and the guaranteed sound power
level have been determined in accordance with
UK regulation Noise Emission in the Environ‐
ment by Equipment for use Outdoors Regula‐
tions 2001, Schedule 8..
FS 511 C-M
Measured sound power level: 115 dB(A)
–
Guaranteed sound power level: 117 dB(A)
–
FS 561 C-M
Measured sound power level: 116 dB(A)
–
Guaranteed sound power level: 118 dB(A)
–
The technical documents are stored at
ANDREAS STIHL AG & Co. KG Produktzulas‐
sung.
The year of manufacture, country of manufacture
and serial number are shown on the rating plate
of the brushcutter.
Done at Waiblingen, 15.07.2021
ANDREAS STIHL AG & Co. KG
pp
Dr. Jürgen Hoffmann, Director Product Certifica‐
tion & Regulatory Affairs
24 0458-856-0121-B
24 UKCA Declaration of Conformity English
0458-856-0121-B 25
English 24 UKCA Declaration of Conformity
26 0458-856-0121-B
24 UKCA Declaration of Conformity English
0458-856-0121-B 27
www.stihl.com
*04588560121B*
0458-856-0121-B
*04588560121B*
0458-856-0121-B
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