Stihl FS 460 C-M K, FS 490 C-M K Instruction Manual

{

STIHL FS 460 C-M K, 490 C-M K

Instruction Manual

Contents

English

Guide to Using this Manual 2
Safety Precautions and Working

Techniques 2
Approved Combinations of Cutting

Attachment, Deflector, Limit Stop
and Harness 10

Mounting the Bike Handle 12
Adjusting the Throttle Cable 15
Mounting the Deflector 15

Original Instruction ManualPrinted on chlorine-free paper

Mounting the Cutting Attachment 16
Fuel 19
Fueling 20
Fitting the Full Harness 21
Balancing the Trimmer/Brushcutter 21
Starting / Stopping the Engine 22
Operating Instructions 25
Air filter 25
M-Tronic 26
Winter Operation 26
Electric Handle Heating 28
Spark Plug 28
Engine Running Behavior 29

Printing inks contain vegetable oils, paper can be recycled.

Rewind Starter 30
Storing the Machine 30
Sharpening Metal Cutting Blades 30
Inspection and Maintenance by

User 31
Inspections and Maintenance by

Dealer 32
Maintenance and Care 33
Minimize Wear and Avoid Damage 35
Main Parts 36

Specifications 37
Maintenance and Repairs 38
Disposal 39
EC Declaration of Conformity 39

Dear Customer,

Thank you for choosing a quality
engineered STIHL product.

It has been built using modern
production techniques and
comprehensive quality assurance.
Every effort has been made to ensure
your satisfaction and troublefree use of
the product.

Please contact your dealer or our sales
company if you have any queries
concerning this product.

Your

Dr. Nikolas Stihl

{

© ANDREAS STIHL AG & Co. KG, 2014

0458-748-0121-D. VA3.H14.

0000005274_010_GB

FS 460 C-M K, FS 490 C-M K

This instruction manual is protected by copyright. All rights reserved, especially the rights to reproduce, translate and process
with electronic systems.

1

English

Guide to Using this Manual

Pictograms

The meanings of the pictograms
attached to the machine are explained in
this manual.

Depending on the model concerned, the
following pictograms may be attached to
your machine.

Fuel tank; fuel mixture of
gasoline and engine oil

Operate decompression
valve

Manual fuel pump

Operate manual fuel
pump

Tube of grease

Intake air: Summer
operation

Intake air: Winter
operation

Handle heating

Symbols in text

WARNING

Warning where there is a risk of an
accident or personal injury or serious
damage to property.

NOTICE

Caution where there is a risk of
damaging the machine or its individual
components.

Engineering improvements

STIHL's philosophy is to continually
improve all of its products. For this
reason we may modify the design,
engineering and appearance of our
products periodically.

Therefore, some changes, modifications
and improvements may not be covered
in this manual.

Safety Precautions and
Working Techniques

Some special safety pre­cautions have to be
observed when working
with this power tool
because of the very high
speed of the cutting
attachment.

It is important that you
read the instruction man­ual before first use and
keep it in a safe place for
future reference. Non­observance of the
instruction manual may
result in serious or even
fatal injury.

Observe all applicable local safety
regulations, standards and ordinances.

If you have not used this type of power
tool before: Have your dealer or other
experienced user show you how to
operate your unit or attend a special
course in its operation.

Minors should never be allowed to use a
power tool.

Keep bystanders, especially children,
and animals away from the work area.

When the power tool is not in use, shut it
off so that it does not endanger others.
Secure it against unauthorized use.

The user is responsible for avoiding
injury to third parties or damage to their
property.

2

FS 460 C-M K, FS 490 C-M K

English

002BA479 KN

Do not lend or rent your power tool
without the instruction manual. Be sure
that anyone using it understands the
information contained in this manual.

The use of noise emitting power tools
may be restricted to certain times by
national or local regulations.

To operate the power tool you must be
rested, in good physical condition and
mental health.

If you have any condition that might be
aggravated by strenuous work, check
with your doctor before operating a
power tool.

Persons with pacemakers only: The
ignition system of your power tool
produces an electromagnetic field of a
very low intensity. This field may
interfere with some pacemakers. STIHL
recommends that persons with
pacemakers consult their physician and
the pacemaker manufacturer to reduce
any health risk.

Do not operate the power tool if you are
under the influence of any substance
(drugs, alcohol) which might impair
vision, dexterity or judgment.

Depending on the cutting attachment
fitted, use your power tool only for
cutting grass, wild growth, shrubs,
scrub, bushes, small diameter trees and
similar materials.

Do not use your power tool for any other
purpose because of the increased risk of
accidents.

Only use cutting attachments and
accessories that are explicitly approved
for this power tool model by STIHL or
are technically identical. If you have any
questions in this respect, consult a

servicing dealer. Use only high quality
tools and accessories in order to avoid
the risk of accidents and damage to the
machine.

STIHL recommends the use of genuine
STIHL cutting attachments and
accessories. They are specifically
designed to match the product and meet
your performance requirements.

Never attempt to modify your unit in any
way since this may increase the risk of
personal injury. STIHL excludes all
liability for personal injury and damage
to property caused while using
unauthorized attachments.

Do not use a pressure washer to clean
the unit. The solid jet of water may
damage parts of the unit.

The deflector on this power tool cannot
protect the operator from all objects
thrown by the cutting attachment
(stones, glass, wire, etc.). Such objects
may ricochet and then hit the operator.

Clothing and Equipment

Wear proper protective clothing and
equipment.

Clothing must be sturdy
but allow complete free­dom of movement. Wear
snug-fitting clothing, an
overall and jacket combi­nation, do not wear a
work coat.

Avoid clothing that could get caught on
branches or brush or moving parts of the
machine. Do not wear a scarf, necktie or
jewelry. Tie up and confine long hair
(e.g. with a hair net, cap, hard hat, etc.).

Wear steel-toed safety
boots with non-slip soles.

Wear a safety hard hat
for thinning operations,
when working in high
scrub and where there is
a danger of head injuries
from falling objects. To
reduce the risk of injury
from thrown objects,
always wear a face shield
and safety glasses.

A face shield alone does not provide
adequate eye protection.

Wear hearing protection, e.g. earplugs
or ear muffs.

Wear robust work gloves
made of durable material
(e.g. leather).

STIHL offers a comprehensive range of
personal protective clothing and
equipment.

Transporting the Power Tool

Always stop the engine.

FS 460 C-M K, FS 490 C-M K

3

English

Carry the unit hanging from the shoulder
strap or properly balanced by the drive
tube. Fit transport guard on metal cutting
attachments to avoid the risk of injury
from blade contact

To reduce the risk of seri­ous burn injuries, avoid
touching hot parts of the
machine, including the
gearbox housing.

In vehicles: Properly secure your power
tool to prevent turnover, fuel spillage and
damage.

Fueling

Gasoline is an extremely
flammable fuel. Keep
clear of naked flames. Do
not spill any fuel – do not
smoke.

Always shut off the engine before
refueling.

Do not fuel a hot engine – fuel may spill
and cause a fire.

Open the fuel cap carefully to allow any
pressure build-up in the tank to release
slowly and avoid fuel spillage.

Fuel your power tool only in well­ventilated areas. If you spill fuel, wipe
the machine immediately – if fuel gets on
your clothing, change immediately.

After fueling, tighten
down the fuel tank cap as
securely as possible.

This reduces the risk of unit vibrations
causing the fuel cap to loosen or come
off and spill quantities of fuel.

To reduce the risk of serious or fatal
burn injuries, check for fuel leakage. If
fuel leakage is found, do not start or run
the engine until leak is fixed.

Before Starting

Check that your power tool is properly
assembled and in good condition – refer
to appropriate chapters in the instruction
manual.

– Check the fuel system for leaks,

paying special attention to visible
parts such as the tank cap, hose
connections and the manual fuel
pump (on machines so equipped). If
there are any leaks or damage, do
not start the engine – risk of fire.
Have your machine repaired by a
servicing dealer before using it
again.

– Use only an approved combination

of cutting attachment, deflector,
handle and harness. All parts must
be assembled properly and
securely.

– The stop switch must move freely.

– Check smooth action of choke

knob, throttle trigger lockout and
throttle trigger – the throttle trigger
must return automatically to the idle
position. The choke knob must
spring back from the } position to
the run position F when the throttle
trigger lockout and throttle trigger
are squeezed.

– Check that the spark plug boot is

secure – a loose boot may cause
arcing that could ignite combustible
fumes and cause a fire.

– Check cutting tool or attachment for

correct and secure assembly and
good condition.

– Check protective devices (e.g.

deflector for cutting attachment,
rider plate) for damage or wear.
Always replace damaged parts. Do
not operate your machine with a
damaged deflector or worn rider
plate (lettering and arrows no longer
legible).

– Never attempt to modify the controls

or safety devices in any way.

– Keep the handles dry and clean –

free from oil and dirt – for safe
control of the power tool.

– Adjust the harness and handle(s) to

suit your height and reach. See
chapters on "Fitting the Harness"
and "Balancing the Machine".

To reduce the risk of accidents, do not
operate your power tool if it is damaged
or not properly assembled.

If you use a shoulder strap or full
harness: Practice removing and putting
down the power tool as you would in an
emergency. To avoid damage, do not
throw the power tool to the ground when
practicing.

Starting the Engine

Start the engine at least 3 meters from
the fueling spot, outdoors only.

4

FS 460 C-M K, FS 490 C-M K

English

002BA480 KN

15m (50ft)

Place the unit on firm ground in an open
area. Make sure you have good balance
and secure footing. Hold the unit
securely. The cutting attachment must
be clear of the ground and all other
obstructions because it may begin to run
when the engine starts.

Your power tool is a one-person unit. To
reduce the risk of injury from thrown
objects, do not allow other persons
within a radius of 15 meters of your own
position – even when starting.

To reduce the risk of
injury, avoid contact with
the cutting attachment.

Do not drop start the
power tool – start the
engine as described in
the instruction manual.
Note that the cutting
attachment continues to
run for a short period
after you let go of the
throttle trigger – flywheel
effect.

To reduce the risk of fire, keep hot
exhaust gases and hot muffler away
from easily combustible materials (e.g.
wood chips, bark, dry grass, fuel).

Holding and Controlling the Unit

Always hold the power tool firmly with
both hands on the handles.

Make sure you always have good
balance and secure footing.

Right handle on control handle, left hand
on left handle.

During Operation

Make sure you always have good
balance and secure footing.

In the event of imminent danger or in an
emergency, press the stop switch to
shut off the engine.

The cutting attachment may catch and
fling objects a great distance and cause
injury - therefore, do not allow any other
persons within a radius of 15 meters of
your own position. To reduce the risk of
damage to property, also maintain this
distance from other objects (vehicles,
windows). Even maintaining a distance
of 15 meters or more cannot exclude the
potential danger.

The correct engine idle speed is
important to ensure that the cutting
attachment stops rotating when you let
go of the throttle trigger. If the cutting
attachment continues to rotate when the

engine is idling, have the machine
checked by your servicing dealer. STIHL
recommends a STIHL servicing dealer.

Take special care in slippery conditions
(ice, wet ground, snow), on slopes or
uneven ground.

Watch out for obstacles: Roots, tree
stumps or holes which could cause you
to trip or stumble.

Always stand on the ground while
working, never on a ladder, work
platform or any other insecure support.

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

To reduce the risk of accidents, take a
break in good time to avoid tiredness or
exhaustion.

Work calmly and carefully – in daylight
conditions and only when visibility is
good. Stay alert so as not to endanger
others.

Your power tool produces
toxic exhaust fumes as
soon as the engine is
running. These fumes
may be colorless and
odorless and contain
unburned hydrocarbons
and benzol. Never run
the engine indoors or in
poorly ventilated loca­tions, even if your model
is equipped with a cata­lytic converter.

FS 460 C-M K, FS 490 C-M K

5

English

To reduce the risk of serious or fatal
injury from breathing toxic fumes,
ensure proper ventilation when working
in trenches, hollows or other confined
locations.

To reduce the risk of accidents, stop
work immediately in the event of
nausea, headache, visual disturbances
(e.g. reduced field of vision), problems
with hearing, dizziness, deterioration in
ability to concentrate. Apart from other
possibilities, these symptoms may be
caused by an excessively high
concentration of exhaust gases in the
work area.

Operate your power tool so that it
produces a minimum of noise and
emissions – do not run the engine
unnecessarily, accelerate the engine
only when working.

To reduce the risk of fire, do not smoke
while operating or standing near your
power tool. Note that combustible fuel
vapor may escape from the fuel system.

The dusts, vapor and smoke produced
during operation may be dangerous to
health. If the work area is very dusty or
smoky, wear a respirator.

If your power 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 – see also
"Before Starting".

Check the fuel system in particular for
leaks and make sure the safety devices
are working properly. Do not continue
operating your power tool if it is
damaged. In case of doubt, consult your
servicing dealer.

To reduce the risk
of injury from
thrown objects,
never operate the
unit without the
proper deflector for
the type of cutting
attachment being
used.

Inspect the work area:
Stones, pieces of metal
or other solid objects may
be thrown more than 15
meters and cause per­sonal injury or damage
the cutting attachment
and property (e.g. parked
vehicles, windows).

Special care must be taken when
working in difficult, over-grown terrain.

When cutting high scrub, under bushes
and hedges: Keep cutting attachment at
a minimum height of 15 cm to avoid
harming small animals.

Always shut off the engine before
leaving the unit unattended.

Check the cutting attachment at regular
short intervals during operation or
immediately if there is a noticeable
change in cutting behavior:

– Turn off the engine. Hold the unit

firmly and wait for the cutting
attachment to come to a standstill.

– Check condition and tightness, look

for cracks.

– Check sharpness.

– Replace damaged or dull cutting

attachments immediately, even if
they have only superficial cracks.

Clean grass and plant residue off the
cutting attachment mounting at regular
intervals – remove any build up of
material from the cutting attachment and
deflector.

To reduce the risk of injury, shut off the
engine before changing the cutting
attachment.

The gearbox becomes
hot during operation. To
reduce the risk of burn
injury, do not touch the
gearbox housing.

Do not continue using or attempt to
repair damaged or cracked cutting
attachments by welding, straightening or
modifying the shape (out of balance).

This may cause parts of the cutting
attachment to come off and hit the
operator or bystanders at high speed
and

result in serious or fatal injuries.

Using metal cutting attachments

STIHL recommends the use of original
STIHL metal cutting attachments. They
are specifically designed to match your
model and meet your performance
requirements.

Metal cutting attachments rotate at very
high speed. The forces that occur act on
the machine, the attachment and the
material being cut.

Sharpen metal cutting attachments
regularly as specified.

Unevenly sharpened metal cutting
attachments cause out-of-balance
which can impose extremely high loads
on the machine and increase the risk of
breakage.

6

FS 460 C-M K, FS 490 C-M K

English

Dull or improperly sharpened cutting
edges can put a higher load on the
cutting attachment and increase the risk
of injury from cracked or broken parts.

Inspect metal cutting attachments for
cracks or warping after every contact
with hard objects (e.g. stones, rocks,
pieces of metal). To reduce the risk of
injury, remove burrs and other visible
build-ups of material (use a file) because
they may become detached and be
thrown at high speed during operation.

If a rotating metal cutting attachment
makes contact with a rock or other solid
object there is a risk of sparking which
may cause easily combustible material
to catch fire under certain
circumstances. Dry plants and scrub are
also easily combustible, especially in hot
and dry weather conditions. If there is a
risk of fire, do not use metal cutting
attachments near combustible
materials, dry plants or scrub. Always
contact your local forest authority for
information on a possible fire risk.

To reduce the above-mentioned risks
when using a metal cutting attachment,
never use a metal cutting attachment
with a diameter larger than specified. It
must not be too heavy. It must be
manufactured from materials of
adequate quality and its geometry must
be correct (shape, thickness).

To reduce the risk of injury, a metal
cutting attachment not manufactured by
STIHL must not be heavier, thicker,
have a different shape or a diameter
larger than the largest metal cutting
attachment approved by STIHL for this
power tool model.

Vibrations

Prolonged use of the power tool may
result in vibration-induced circulation
problems in the hands (whitefinger
disease).

No general recommendation can be
given for the length of usage because it
depends on several factors.

The period of usage is prolonged by:

– Hand protection (wearing warm

gloves)

– Work breaks

The period of usage is shortened by:

– Any personal tendency to suffer

from poor circulation (symptoms:
frequently cold fingers, tingling
sensations).

– Low outside temperatures.

– The force with which the handles

are held (a tight grip restricts
circulation).

Continual and regular users should
monitor closely the condition of their
hands and fingers. If any of the above
symptoms appear (e.g. tingling
sensation in fingers), seek medical
advice.

Maintenance and Repairs

Service the machine regularly. Do not
attempt any maintenance or repair work
not described in the instruction manual.
Have all other work performed by a
servicing dealer.

STIHL recommends that you have
servicing and repair work carried out
exclusively by an authorized STIHL
servicing dealer. STIHL dealers are
regularly given the opportunity to attend
training courses and are supplied with
the necessary technical information.

Only use high-quality replacement parts
in order to avoid the risk of accidents
and damage to the machine. If you have
any questions in this respect, consult a
servicing dealer.

STIHL recommends the use of original
STIHL replacement parts. They are
specifically designed to match your
model and meet your performance
requirements.

To reduce the risk of injury from
unintentional engine startup, always
shut off the engine and disconnect the
spark plug boot before performing any
repairs, maintenance or cleaning work. –
Exception: Carburetor and idle speed
adjustments.

Do not turn the engine over on the
starter with the spark plug boot or spark
plug removed since there is otherwise a
risk of fire from uncontained sparking.

To reduce the risk of fire, do not service
or store your machine near open flames.

Check the fuel filler cap for leaks at
regular intervals.

Use only a spark plug of the type
approved by STIHL and make sure it is
in good condition – see "Specifications".

Inspect the ignition lead (insulation in
good condition, secure connection).

Check the condition of the muffler.

FS 460 C-M K, FS 490 C-M K

7

English

002BA397 KN

002BA135 KN

To reduce the risk of fire and damage to
hearing, do not operate your machine if
the muffler is damaged or missing. –

Do not touch a hot muffler since burn
injury will result.

Vibration behavior is influenced by the
condition of the AV elements – check the
AV elements at regular intervals.

Symbols on Deflectors

An arrow on the deflector shows the
correct direction of rotation of the cutting
attachments.

Some of the following symbols are
applied to the outside of the deflector to
indicate the approved combination of
cutting attachment and deflector.

Deflector may be used
with mowing heads.

Deflector may be used
with grass cutting blades.

Harness

Deflector must not be
used with mowing heads.

Deflector must not be
used with grass cutting
blades.

Deflector must not be
used with brush knives.

Deflector must not be
used with shredder
blades.

Deflector must not be
used with circular saw
blades.

N Use the harness.
N With the engine running, attach the

machine to the harness.

Circular saw blades must always be
used in combination with a full harness
with a quick-release system.

Risk of Kickout (Blade Thrust) with Metal
Cutting Attachments

When using metal cutting attachments
(grass cutting blade, brush knife, circular
saw blade) there is a risk of kickout
when the rotating blade comes into
contact with a solid object such as a tree
trunk, branch, tree stump, rock or
similar. The machine is thrown to the
right or to the rear – opposite to the
attachment's direction of rotation.

Deflector may be used
with brush knives.

The harness is included with the
machine or available as a special
accessory.

Deflector may be used
with shredder blades.

The risk of kickout is greatest when the
black area of the rotating cutting
attachment comes into contact with a
solid object.

8

FS 460 C-M K, FS 490 C-M K

English

002BA355 KN

002BA509 KN

002BA449 KN

Brush Knife

For cutting matted grass, wild growth
and scrub and thinning young stands
with a stem diameter of no more than
2 cm – do not cut thicker stems – risk of
accidents.

Use the brushcutter like a scythe (sweep
it to the right and left) at ground level
when cutting grass and thinning young
stands.

To cut wild growth and scrub, lower the
brush knife down onto the growth to
achieve a shredding effect – always
keep the cutting attachment below hip
level during this process.

Exercise extreme caution when using
this method of cutting. The higher the
cutting attachment is off the ground, the
greater the risk of injury from cuttings
being thrown sideways.

Warning! Improper use of a brush knife
may cause it to crack, chip or shatter –
risk of injury from thrown parts.

To reduce the risk of injury it is essential
to take the following precautions:

– Avoid contact with stones, rocks,

pieces of metal and other solid
foreign objects.

– Never cut wood or shrubs with a

stem diameter of more than 2 cm –
use a circular saw blade for such
work.

– Inspect the brush knife at regular

short intervals for signs of damage.
Do not continue working with a
damaged brush knife.

– Resharpen the brush knife regularly

and whenever it has dulled
noticeably, and have it balanced if
necessary (STIHL recommends a
STIHL servicing dealer).

Circular Saw Blade

Suitable for cutting shrubs and trees with
a maximum stem diameter of 7 cm.

Before starting the cut, accelerate the
engine up to full throttle. Perform cut
with uniform pressure.

Use circular saw blades only with a
matching limit stop of the correct
diameter.

WARNING

To reduce the risk of blade damage,
avoid contact with stones and the
ground. Resharpen the blade properly in

good time – dull teeth may result in the
blade cracking and shattering and
causing serious injury.

When felling, maintain a distance of at
least two tree lengths from the next
felling site.

Risk of kickout

The risk of kickout is highest in the black
area of the blade: Do not use this area of
the circular saw blade for cutting.

There is also a risk of kickout when
using the lighter shaded areas of the
blade: These areas of the blade should
only be used by experienced operators
with specialized training.

STIHL recommends that you use the
non-shaded area of the circular saw
blade. Always start the cut with this area
of the blade.

FS 460 C-M K, FS 490 C-M K

9

English

21

3

4

8

9

11

5

6

7

10

681BA200 KN

Approved Combinations of Cutting Attachment, Deflector, Limit Stop and Harness

Cutting Attachment Deflector, Limit Stop Harness

Approved Combinations

Select correct combination from the
table according to the cutting
attachment you intend to use.

WARNING

For safety reasons only the cutting
attachments and deflectors or limit stops
shown in each row of the table may be

10

used together. No other combinations
are permitted because of the risk of
accidents.

Cutting Attachments

Metal cutting attachments

1 Brush knife 305-2 Spezial
2 Brush knife 300-3

3 Scratcher tooth circular saw blade

200
4 Chisel tooth circular saw blade 200
5 Scratcher tooth circular saw blade

225
6 Chisel tooth circular saw blade 225
7 Carbide tipped circular saw blade

225

FS 460 C-M K, FS 490 C-M K

WARNING

Non-metal brush knives and circular saw
blades are not approved.

Deflector, Limit Stops

8 Deflector for metal cutting

attachments, items 1 to 2

9 Limit stop for circular saw blades,

items 3 and 4

10 Limit stop for circular saw blades,

items 5 and 7

Harness/Shoulder Strap

11 Full harness must be used

English

FS 460 C-M K, FS 490 C-M K

11

English

1

3BA003 KN

2BA002 KN

3

2

2BA003 KN

4

6

2BA004 KN

3

2

2BA005 KN

7

Mounting the Bike Handle

Mounting Bike Handle with Swiveling
Handle Support

Do not rotate the control handle (1)
between unpacking and mounting it on
the handlebar; see also chapter on
"Adjusting the Throttle Cable".

Mounting the Handlebar

Assembly of the swivelling handle
support involves equipping the clamp
moldings with a spring and mounting
them on the handle support.

N Use the spring (4) from the parts kit

supplied with the machine.

N Push the spring (4) into the lower

clamp molding (5).

N Position the clamp moldings (3) with

handlebar (2) on the handle support

(6).
N Do notturn the handlebar in the

clamp moldings.

The machine is shipped with the clamp
moldings (3) mounted on the handlebar
(2).

N Do not change the position of the

clamp moldings on the handlebar
until the control handle is mounted.

12

N Raise the grip of the wing screw (7)

to the upright position.
N Rotate the wing screw

counterclockwise and tighten it only

moderately.

FS 460 C-M K, FS 490 C-M K

English

4

7

2BA006 KN

6

8

5

9

6

2BA007 KN

6

5

2BA008 KN

2BA013 KN

10

11

1

002BA454 KN

1

2BA009 KN

2BA010 KN

1

12

12

13

13

2

1

002BA457 KN

10

11

1

002BA460 KN

N Position wing screw (7) in threaded

insert in handle support (6) – against
pressure of spring (4).

N Position the clamp moldings so that

the tabs (8) on the lower clamp
molding (5) line up with the slots (9)
in the handle support (6).

N Rotate wing screw clockwise until

the lower clamp molding (5) butts
against the handle support (6).

N Only tighten the wing screw

moderately.

FS 460 C-M K, FS 490 C-M K

N Fold the grip of the wing screw down

so that it is flush.

Mounting the Control Handle

N Take out the screw (10) and remove

the nut (11) from the control handle
(1).

N Pass the control handle (1) under

the drive tube and put it down on the
right-hand side of the machine.

N Swing the control handle (1) behind

the handlebar so that the throttle

trigger (12) is facing up.

N Push the control handle (1) in this

position onto the end of the

handlebar (2) until the holes (13)

line up – throttle trigger (12) facing

up.

N Fit the nut (11) in the control handle

(1), insert the screw (10) and tighten

it down firmly.

13

English

2BA014 KN

2BA015 KN

4BA007 KN

2

2BA012 KN

A

4BA005 KN

4BA006 KN

Adjusting the Handlebar

Opening the wing screw

N Fold the grip of the wing screw down

so that it is flush.

N Raise the grip of the wing screw to

the upright position.

N Turn the wing screw

counterclockwise until the handle
support can be moved.

Lining up the handlebar

N Move the handlebar to the required

position.

Checking the Throttle Cable

N After mounting the control handle,

check the throttle cable – see

chapter on "Adjusting the Throttle

Cable".

N Position the handlebar (2) so that

distance A is about 15 cm (6 in).

Do not clamp the curved part of the
handlebar.

Closing the wing screw

N Rotate the wing screw clockwise

until it becomes difficult to turn.

N Tighten down the wing screw firmly.

14

FS 460 C-M K, FS 490 C-M K

English

2

7

4BA008 KN

1

002BA542 KN

2

Swiveling the Handlebar

Transport position

N Loosen the wing screw (7) and

unscrew it until the handlebar (2)
can be turned clockwise.

N Turn the handlebar 90° and then

swing the handles down.

N Tighten down the wing screw (7)

firmly.

Working position
N Reverse the sequence described

above to swing the handles up and
turn the handlebar
counterclockwise.

Adjusting the Throttle Cable Mounting the Deflector

Correct adjustment of the throttle cable
is a precondition for correct operation of
the machine in all modes, from starting
to full throttle.

It may be necessary to readjust the
throttle cable after assembling the
machine or after a prolonged period of
operation.

– You can check and adjust of throttle

cable – see "Inspection and
Maintenance by User".

Use the Right Deflector

WARNING

The deflector (1) is approved for brush
knives only and must therefore be
mounted before fitting a brush knife. It is
also necessary to change the guard
ring ((2), see "Mounting the Cutting
Attachment" / "Mounting Mowing
Attachments".

FS 460 C-M K, FS 490 C-M K

15

English

3

002BA543 KN

4

002BA544 KN

5

002BA406 KN

002BA548 KN

1

4

2
3

WARNING

Stop (3) is approved for circular saw
blades only and must therefore be
mounted before fitting a circular saw
blade.

Mounting the Deflector

Deflectors (1 and 3) are mounted to the
gearbox in the same way.

N Remove dirt from joints on gearbox

and deflector – make sure that no
dirt gets into the screw holes in the
gearbox.

N Place the deflector on the

gearbox (4).

N Insert the screws (5) and tighten

them down firmly.

Mounting the Cutting
Attachment

Placing power tool on the ground

N Shut off the engine.
N Lay your power tool on its back so

that the cutting attachment
mounting face is pointing up.

Fitting the Thrust Plate

N Slip the thrust plate (1) over the

shaft (2).

Your power tool comes from the factory
with a guard ring (3) for circular saw
blades.

NOTICE

The thrust plate (1) is required for
mounting all cutting attachments to the
gearbox.

NOTICE

The guard washer (4) is required for
mounting brush knives.

Cleaning Gearbox Mounting Hardware
for Cutting Attachment

NOTICE

Check inside of guard ring (3) and area
around it for dirt at regular intervals, or
when you change the cutting
attachment, and clean if necessary.

The guard washer (4) is not fitted with
circular saw blades.

N Pull the guard washer (4) and thrust

plate (1) off the shaft.
N Thoroughly clean the guard ring (3),

shaft (2), thrust plate (1) and guard

washer (4) – do not remove the

guard ring.

Mounting the Guard Ring

Always fit the guard ring that matches
the cutting attachment you intend to use.

Recommendation: The guard ring must
be mounted with particular care. Have
this work performed by your servicing
dealer. STIHL recommends a STIHL
servicing dealer.

16

FS 460 C-M K, FS 490 C-M K

English

2

1

3

002BA524 KN

2

1

002BA525 KN

2

3

1

0812BA021 KN

2

The following guard rings are either
fitted to the gearbox or are available as
special accessories.

Guard ring for mowing applications

A limit stop kit, which includes a
deflector, a guard washer and guard ring
for mowing attachments, is available as
a special accessory for mounting brush
knives.

Guard ring for sawing applications

For circular saw blades
N Fit the guard ring (1) for sawing

applications.

N Fit the thrust plate (2).

Blocking the Shaft

The output shaft (1) must be blocked
with the stop pin (2) to mount or remove
cutting attachments. The stop pin is
included with the machine and is
available as a special accessory.

N Insert the stop pin (2) in the bore (3)

in the gearbox as far as stop, apply

slight pressure.
N Rotate shaft or cutting attachment

until the stop pin slips into position

and blocks the shaft.

Mounting the Cutting Attachment

WARNING

Use a deflector that matches the cutting
attachment – see "Mounting the
Deflector".

Removing and Installing Metal Cutting
Attachments

Before removing and installing metal
cutting attachments:

For optimum protection from the ingress
of grass when using mowing
attachments:

N Mount the guard ring (1) for mowing

applications.

N Fit the thrust plate (2) and the guard

washer (3).

FS 460 C-M K, FS 490 C-M K

WARNING

Wear protective gloves to reduce the
risk of direct contact with the sharp
cutting edges.

17

English

681BA123 KN

002BA521 KN

b

2

3

1

4

a

681BA165 KN

b

002BA300 KN

3

4

1

2

a

Brush knife 305-2 and 300-3

Aligning the cutting attachment

Cutting attachments with 2, 3 or 3 teeth
may point in either direction – these
cutting attachments must be turned over
regularly to help avoid one-sided wear.

Mounting the cutting attachment
N Fit the guard ring for mowing

applications.

WARNING

Collar (a) must locate in the cutting
attachment's mounting hole (b).

Securing the cutting attachment
N Fit the thrust washer (2) – convex

side must face up.

N Fit the rider plate (3) (for mowing

applications).

N Block the shaft.
N Screw the mounting nut (4) on to the

shaft counterclockwise and tighten
it down firmly.

WARNING

If the mounting nut has become too
loose, fit a new one.

NOTICE

Remove the tool used to block the shaft.

Removing the cutting attachment

N Block the shaft.
N Unscrew the mounting nut

clockwise.

N Pull the cutting attachment with its

mounting hardware off the gearbox.

Circular Saw Blades 200 and 225

Aligning the cutting attachment

Cutting edges of circular saw blades
must point clockwise.

Mounting the cutting attachment
N Fit the guard ring for sawing

applications.

N Place the cutting attachment (1) in

position.

18

N Place the cutting attachment (1) in

position.

FS 460 C-M K, FS 490 C-M K

English

WARNING

Collar (a) must locate in the cutting
attachment's mounting hole (b).

Securing the cutting attachment
N Fit the thrust washer (2) – convex

side must face up.

N Fit the rider plate (3) (for sawing

applications).

N Block the shaft.
N Screw on the nut (4)

counterclockwise and tighten it
down firmly.

WARNING

If the mounting nut has become too
loose, fit a new one.

NOTICE

Remove the tool used to block the shaft.

Removing the cutting attachment

N Block the shaft.
N Unscrew the mounting nut

clockwise.

N Pull the cutting attachment with its

mounting hardware off the gearbox.

Fuel

Your engine requires a mixture of
gasoline and engine oil.

WARNING

For health reasons, avoid direct skin
contact with gasoline and avoid inhaling
gasoline vapor.

STIHL MotoMix

STIHL recommends the use of STIHL
MotoMix. This ready-to-use fuel mix
contains no benzol or lead, has a high
octane rating and ensures that you
always use the right mix ratio.

STIHL MotoMix uses STIHL HP Ultra
two-stroke engine oil for an extra long
engine life.

MotoMix is not available in all markets.

Mixing Fuel

NOTICE

Unsuitable fuels or lubricants or mix
ratios other than those specified may
result in serious damage to the engine.
Poor quality gasoline or engine oil may
damage the engine, sealing rings, hoses
and the fuel tank.

Gasoline

Use only high-quality brand-name
gasoline with a minimum octane rating
of 90 – leaded or unleaded.

If your machine is equipped with a
catalytic converter, you must use
unleaded gasoline.

NOTICE

A few tankfuls of leaded gasoline will
greatly reduce the efficiency of the
catalytic converter.

Gasoline with an ethanol content of
more than 10% can cause running
problems in engines with a manually
adjustable carburetor and should not be
used in such engines.

Engines equipped with M-Tronic deliver
full power when run on gasoline with an
ethanol content of up to 25% (E25).

Engine oil

Use only high-quality two-stroke engine
oil – preferably STIHL HP, HP Super or
HP Ultra, which are specially formulated
for use in STIHL engines. HP Ultra
guarantees high performance and a
long engine life.

These engine oils are not available in all
markets.

Use only STIHL 50:1 two-stroke engine
oil for the fuel mix in models with a
catalytic converter.

FS 460 C-M K, FS 490 C-M K

19

English

2709BA025 KN

Mix Ratio

STIHL 50:1 two-stroke engine oil: 50
parts gasoline to 1 part oil

Examples

Gasoline STIHL engine oil 50:1
Liters Liters (ml)

10.02(20)
5 0.10 (100)
10 0.20 (200)
15 0.30 (300)
20 0.40 (400)
25 0.50 (500)

N Use a canister approved for storing

fuel. Pour oil into canister first, then
add gasoline and mix thoroughly.

Storing Fuel

Store fuel only in approved safety-type
fuel canisters in a dry, cool and safe
location protected from light and the sun.

Fuel mix ages – only mix sufficient fuel
for a few weeks work. Do not store fuel
mix for longer than 30 days. Exposure to
light, the sun, low or high temperatures
can quickly make the fuel mix unusable.

STIHL MotoMix may be stored for up to
2 years without any problems.

N Thoroughly shake the mixture in the

canister before fueling your
machine.

WARNING

Pressure may build up in the canister –
open it carefully.

N Clean the fuel tank and canister

from time to time.

Dispose of remaining fuel and cleaning
fluid properly in accordance with local
regulations and environmental
requirements.

Fueling

Fuel Filler Cap

WARNING

When fueling on a slope, always position
the machine with the filler cap facing
uphill.

N Place the machine on level ground

so that the filler cap is facing up.
N Before fueling, clean the filler cap

and the area around it to ensure that

no dirt falls into the tank.

20

FS 460 C-M K, FS 490 C-M K

English

2709BA003 KN

2709BA004 KN

3

002BA411 KN

1

2

6BA009 KN

6BA010 KN

Opening the filler cap

N Turn the cap counterclockwise until

it can be removed from the tank
opening.

N Remove the cap.

Filling Up with Fuel

Take care not to spill fuel while fueling
and do not overfill the tank.

STIHL recommends you use the STIHL
filler nozzle for fuel (special accessory).

N Fill up with fuel.

Closing the filler cap

Fitting the Full Harness

Fitting the full harness is described in
detail in the instruction sheet supplied.

N Put on the full harness (1).
N Ad just t he len gth of the st rap so that

the carabiner (2) is about a hand’s
width below your right hip.

N Attach the spring hook to the

machine's perforated strip (3).

Find the right attachment point for the
cutting attachment you are using – see
"Balancing the Brushcutter".

Balancing the
Trimmer/Brushcutter

The unit is balanced differently
depending on the cutting attachment
used.

N With the unit suspended from the

harness, see how it is balanced and

change attachment point as

necessary:

Floating Positions

Brush knives should just touch the
ground.

Circular saw blades should "hover"
about 20 cm above the ground.

N Place the cap in the opening.
N Turn the cap clockwise as far as

stop and tighten it down as firmly as
possible by hand.

FS 460 C-M K, FS 490 C-M K

21

English

1

002BA484 KN

2

3

FS 490

002BA482 KN

FS 460

4

3BA015 KN

FS 460

4

2709BA015 KN

FS 490

Throwing Off Machine

WARNING

The machine must be quickly thrown off
in the event of imminent danger.
Practice removing and putting down the
power tool as you would in an
emergency. To avoid damage, do not
throw the power tool to the ground when
practicing.

Starting / Stopping the
Engine

Controls

1 Throttle trigger lockout
2 Throttle trigger
3 Stop switch with Run and Stop

positions. Press the momentary
contact stop switch to switch off the
ignition.

Function of stop switch and ignition
system

The stop switch is normally in the Run
position, i.e. when it is not depressed:
The ignition is switched on – the engine
is ready to start. Operate the stop switch
to switch off the ignition. The ignition is
switched on again automatically after
the engine stops.

Symbols on choke knob

Start } – the engine is started in this
position.

Normal run position F – engine runs or
can fire.

Starting the Engine

N Press the manual fuel pump

bulb (4) at least five times – even if

the bulb is filled with fuel.

22

FS 460 C-M K, FS 490 C-M K

N Depress in the outer edge (arrows)

FS 460

3BA016 KN

5

FS 490

5

2709BA016 KN

6BA011 KN

6BA012 KN

6BA010 KN

of the choke knob (5) and then turn
it to Start }.

Cranking

N Place the unit on the ground: It must

rest securely on the engine's guard
plate and the deflector. Check that

the cutting attachment is not
touching the ground or any other
obstacles.

N Make sure you have a firm footing,

either standing, stooping or
kneeling.

N Hold the unit firmly on the ground

with your left hand and press down
– do not touch the throttle trigger or
throttle trigger lockout.

NOTICE

Do not stand or kneel on the drive tube.

N Hold the starter grip with your right

hand.

Alternative method of starting:

With the machine suspended from the
harness and the engine at normal
operating temperature:

English

N Hold the machine firmly with your

right hand on the drive tube, handle

support or handlebar.
N With the machine behind you, press

it against the left side of your body.
N Hold the starter grip with your left

hand.
N Pull the starter grip steadily.

NOTICE

Do not pull out the starter rope all the
way – it might otherwise break.

N Do not let the starter grip snap back.

Guide it slowly back into the housing

so that the starter rope can rewind

properly.
N Continue cranking until engine runs.

As soon as the engine runs
N Make sure the engine runs

smoothly.

If the engine stalls:
N continue cranking until the engine

runs.

FS 460 C-M K, FS 490 C-M K

23

English

6BA014 KN

002BA485 KN

6BA024 KN

As soon as the engine runs smoothly
N After a cold start, allow the engine to

warm up in the Start } position.

Machine is ready for use.

If you have started the machine for the
first time, refer to the notes on "Starting
for first time" in section "Other Hints on
Starting".

N Depress throttle trigger lockout and

pull the throttle trigger – the choke
knob moves to the Run F position.

WARNING

The cutting attachment must not rotate
in the Run F position with the engine at
idling speed.

If the cutting attachment rotates when
the engine is idling, refer to notes in
chapter on "Adjusting the Thottle Cable"
or have the machine serviced by your
dealer. STIHL recommends a STIHL
servicing dealer.

N Attaching machine to shoulder strap
N Machine is ready for use.

Stopping the engine

N Depress the momentary contact

stop switch – the engine stops –
release the stop switch – it springs
back to the run position.

Other Hints on Starting

Starting for first time

N Depress the throttle trigger – do not

press down the throttle trigger
lockout.

If engine speed increases or the cutting
attachment rotates:

N Go to section "Stopping the

Engine".

N Go to "Adjusting the Throttle Cable".

If the engine speed does not increase,
your machine is ready for operation.

At very low outside temperatures
N Set the engine to winter operation if

necessary, see "Winter Operation".
N If the machine is very cold (frost on

machine), allow the engine to warm

up in the Start } position after

starting until normal operating

temperature is reached. Warning:

The cutting attachment runs.

If the engine does not start

N Check that all settings are correct.
N Check that there is fuel in the tank

and refuel if necessary.
N Check that the spark plug boot is

properly connected.
N Repeat the starting procedure.

Fuel tank run until completely dry
N After refueling, press the manual

fuel pump bulb at least five times –

even if the bulb is filled with fuel.
N Start the engine.

24

FS 460 C-M K, FS 490 C-M K

Operating Instructions Air filter

FS 460

3BA039 KN

1

2709BA017 KN

FS 490

1

3

3BA040 KN

2

FS 460

2709BA018 KN

FS 490

3

2

English

During break-in period

A factory-new machine should not be
run at high revs (full throttle off load) for
the first three tank fillings. This avoids
unnecessary high loads during the
break-in period. As all moving parts
have to bed in during the break-in
period, the frictional resistances in the
engine are greater during this period.
The engine develops its maximum
power after about 5 to 15 tank fillings.

During Operation

After a long period of full throttle
operation, allow the engine to run for a
short while at idle speed so that engine
heat can be dissipated by the flow of
cooling air. This protects engine­mounted components (ignition,
carburetor) from thermal overload.

After Finishing Work

Storing for a short period: Wait for the
engine to cool down. Empty the fuel tank
and keep the machine in a dry place,
well away from sources of ignition, until
you need it again. For longer out-of­service periods – see "Storing the
Machine".

FS 460 C-M K, FS 490 C-M K

General Information

The filter has a very long service life.

Do not remove the filter cover or replace
the air filter as long as there is no
noticeable loss of power.

Dirty air filters reduce engine power,
increase fuel consumption and make
starting more difficult.

Replacing the Air Filter

Only if there is a noticeable loss of
engine power

N Set the choke knob to }.

N Loosen the screws (1).

N Remove the filter cover (2).
N Clean away loose dirt from around

the filter (3) and inside the filter

cover.

The air filter (3) is a pleated paper filter
element.

N Remove and check the filter

element (3) – replace if paper or

frame is dirty or damaged.
N Unpack the new filter.

NOTICE

Do not bend or twist the filter before
installation as it might otherwise be
damaged – do not use damaged filters.

N Fit the filter in the filter housing.
N Fit the filter cover.

Use only high quality air filters to ensure
the engine is protected from abrasive
dust.

25

English

2

1

9926BA016 KN

STIHL recommends you use only
original STIHL air filters. The high quality
standard of these parts guarantees
trouble-free operation, a long engine life
and very long filter service lives.

Filter Element for Winter Operation

Maintenance and care of the special
filter element for winter operation are
described in the chapter on "Winter
Operation".

M-Tronic Winter Operation

General Information

The M-Tronic controls fuel feed and
ignition timing electronically in all
operating conditions.

M-Tronic guarantees simple and fast
starts. The engine is started in the
Start } position irrespective of climatic
conditions or engine temperature. After
starting, the Start } position can be
maintained until the engine runs
smoothly.

M-Tronic ensures optimum engine
power at all times, very good
acceleration and automatic adjustment
to suit changing conditions.

For this reason there is no need to
change the carburetor setting – the
carburetor has no adjusting screws.

If the usual good running behavior and
engine power are not reached after an
extreme change in operating conditions,
contact your servicing dealer for
assistance.

STIHL recommends that you have
servicing and repair work carried out
exclusively by an authorized STIHL
servicing dealer.

At temperatures below +10°C

Preheating the carburetor

Repositioning a shutter allows heated air
to be drawn in from around the cylinder
and mixed with cold air – this helps
prevent carburetor icing.

An arrow (1) on the shroud indicates the
setting of the shutter (2) for summer or
winter operation. Meaning of symbols:

– "Sun" = summer operation

– "Snowflake" = winter operation

26

FS 460 C-M K, FS 490 C-M K

N Remove the screw (3) from the

2

9926BA017 KN

3

2

9926BA018 KN

FS 460

4

5

3BA041 KN

2

2709BA019 KN

4

FS 490

2

5

shutter.

N Pull the shutter (2) out of the

shroud.

N Rotate the shutter (2) from the

summer position to the winter
position and refit it.

N Secure the shutter in position with

the screw (3).

At temperatures between +10°C and
+20°C

The machine can normally be operated
in this temperature range with the
shutter (2) in the summer position.
Change the position of the shutter if
necessary.

At temperatures above +20°C

N Always return the shutter (2) to the

summer position.

NOTICE

Do not operate the machine in the winter
position at temperatures above +20°C
because there is otherwise a risk of
engine running problems and
overheating.

At temperatures below –10°C

In extreme wintry conditions

– Temperatures below –10°C

– Powder or drifting snow

it is advisable to use the optional "cover
plate kit".

English

The cover plate kit contains the following
parts for converting the power tool:

4 Cover plate partially blanks off the

slots in the starter housing

5 Air filter with synthetic fabric

element

– For FS 460 with tank cap with

hinged grip: O-ring for the tank filler

cap

– Instructions for converting the

machine

After installing the cover plate kit:
N Set the shutter (2) to the winter

position.

FS 460 C-M K, FS 490 C-M K

27

English

2709BA020 KN

1

1

9926BA020 KN

At temperatures above –10°C

N Remove the parts of the cover plate

kit and refit the standard parts for
summer operation.

Note for FS 460 with tank cap with
hinged grip: The O-ring supplied with the
cover plate kit can be left on the
machine's filler cap.

Depending on the ambient temperature:
N Set the shutter (2) to the summer or

winter position.

Cleaning the Air Filters

N Loosen filter cover mounting

screws.

N Remove the filter cover.
N Clean away loose dirt from around

the filter (5) and inside the filter
cover.

N Knock the filter (5) out on the palm

of your hand or blow it clear with
compressed air from the inside
outwards.

In case of stubborn dirt or sticky filter
fabric:

N Wash the filter in a clean, non-

flammable solution (e.g. warm
soapy water) and then dry.

Always replace a damaged filter.

Electric Handle Heating

Depending on the version, the power
tool may be equipped with a handle
heating system.

N Switch on handle heating by moving

the switch (1) on the left handle to Z.

Switch off the heating if the handle
temperature feels too high.

N Move the switch (1) to 0

There is no risk of overheating during
long periods of operation. The heating
system is maintenance-free. Contact
your dealer if you have any problems.
STIHL recommends a STIHL servicing
dealer.

Spark Plug

N If the engine is down on power,

difficult to start or runs poorly at idle

speed, first check the spark plug.
N Fit a new spark plug after about 100

operating hours – or sooner if the

electrodes are badly eroded. Install

only suppressed spark plugs of the

type approved by STIHL – see

"Specifications".

Removing the Spark Plug

N Rotate the screw (1) in the cap (2)

until the screw head projects from it.

28

FS 460 C-M K, FS 490 C-M K

N Lift the front of the cap (2) and push

3

9926BA021 KN

000BA039 KN

A

1

000BA045 KN

4

3

2

9926BA022 KN

it to the rear to disengage.

N Leave the cap to one side.
N Pull off the spark plug boot (3).
N Unscrew the spark plug.

Checking the spark plug

WARNING

If the spark plug comes with a
detachable adapter nut (1), screw the
adapter onto the thread and tighten it
down firmly to reduce the risk of arcing
and fire.

Installing the Spark Plug

N Screw the spark plug into the

cylinder.

N Press the spark plug boot firmly

onto the spark plug.

English

Engine Running Behavior

If engine running behavior is still
unsatisfactory after servicing the air filter
and adjusting the throttle cable, the
cause may be the muffler.

Have the muffler checked by a servicing
dealer for contamination
(carbonization).

STIHL recommends that you have
servicing and repair work carried out
exclusively by an authorized STIHL
servicing dealer.

N Clean dirty spark plug.
N Check electrode gap (A) and

readjust if necessary – see
"Specifications".

N Rectify the problems which have

caused fouling of the spark plug.

Possible causes are:

– Too much oil in fuel mix.

– Dirty air filter.

– Unfavorable running conditions.

FS 460 C-M K, FS 490 C-M K

N Fit the cap (1) on the shroud from

the rear and push the lug (2) into the
opening (3) in the shroud at the
same time.

N Swing the cap forwards onto the

shroud, insert and tighten down the
screw (4) firmly.

29

English

002BA358 KN

2

2

1

1

Rewind Starter Storing the Machine Sharpening Metal Cutting

Blades

To help prolong the wear life of the
starter rope, observe the following
points:

N Pull the starter rope only in the

direction specified.

N Do not pull the rope over the edge of

the guide bushing.

N Do not pull out the rope more than

specified.

N Do not allow the starter grip to snap

back, guide it back into the housing
slowly – see chapter on "Starting /
Stopping the Engine."

Have a damaged starter rope replaced
by your dealer before it breaks
completely. STIHL recommends that
you have servicing and repair work
carried out exclusively by an authorized
STIHL servicing dealer.

If the machine is to remain out of use for
approx. 3 months or more

N Drain and clean the fuel tank in a

well ventilated place

N Dispose of fuel in accordance with

the regulations and having regard
for the environment

N Run the engine until the carburetor

is dry. This helps to prevent the
carburetor diaphragms sticking
together.

N Remove, clean and inspect the

cutting attachment. Treat metal
cutting attachments with protective
oil.

N Thoroughly clean the machine
N Store the machine in a dry and safe

place, out of the reach of children
and other unauthorized users

N Use a sharpening file (special

accessory) to sharpen dull cutting

attachments. In case of more

serious wear or nicks: Resharpen

with a grinder or have the work done

by a dealer – STIHL recommends a

STIHL servicing dealer.
N Resharpen frequently, take away as

little material as possible: two or

three strokes of the file are usually

enough.

N Resharpen the cutters (1) uniformly

– do not alter the contour of the

parent blade (2) in any way.

See cutting attachment packaging for
additional sharpening instructions.

Balancing

N After resharpening about 5 times,

check the cutting attachment for

out-of-balance on a STIHL balancer

(special accessory) or have it

checked by a dealer and re-

balanced as necessary – STIHL

recommends a STIHL servicing

dealer.

30

FS 460 C-M K, FS 490 C-M K

English

2

1

4BA014 KN

3

6BA022 KN

1

1

6BA025 KN

2

002BA455 KN

Inspection and Maintenance
by User

Clamped Area of Handlebar

N Check the freedom of movement of

the handlebar (1) in the clamp
moldings (2) at regular intervals.

Handlebar is difficult to move

N Loosen the wing screw (3) just

enough for the handlebar to be
moved.

N Push the handlebar (1) sideways

out of the clamp.

N Soak a cloth in a clean, non-

flammable cleaning solution – do
not use cleaning agent containing
oil or grease.

N Thoroughly clean the clamp area of

the handlebar with the cloth and
cleaning solution.

N Line up the handlebar and secure it

in position with the wing screw.

Handlebar cannot be clamped firmly in
position

N Loosen the handlebar in the clamp

moldings as described above.

N Degrease clamp area on handlebar

and in clamp moldings.

N Line up the handlebar and secure it

in position with the wing screw.

Adjusting the Throttle Cable

The throttle cable can be adjusted only
when the machine is properly
assembled. The control handle must be
in the normal operating position.

If the following adjustments do not
produce the required result, have your
servicing dealer repair the machine.
STIHL recommends a STIHL servicing
dealer.

Check adjustment of throttle cable.

Error: Engine speed increases when
only the throttle trigger is depressed.

N Starting the Engine
N Depress the throttle trigger (2) – do

not press down the throttle trigger

lockout (1).

If the engine speed increases or if the
cutting attachment rotates, the throttle
cable has to be adjusted.

N Stopping the Engine

Adjusting the Throttle Cable

N Depress the throttle trigger lockout

(1) and the throttle trigger (2) as far

as stop and hold them in that

position.

Apply only sufficient pressure to hold the
levers against their stops.

FS 460 C-M K, FS 490 C-M K

31

English

2709BA022 KN

6BA015 KN

6BA026 KN

N Rotate screw in throttle trigger 1/2

turn counterclockwise.

N Release the throttle trigger and

throttle trigger lockout.

N Start the engine and check the

adjustment.

N Shut down the engine and repeat

adjustment if necessary.

Inspections and Maintenance
by Dealer

Maintenance Work

STIHL recommends that you have
servicing and repair work carried out
exclusively by an authorized STIHL
servicing dealer.

Fuel Pickup Body in Tank

N Check the pickup body in the fuel

tank every year and have it replaced
if necessary.

The pickup body should be positioned in
the area of the tank shown in the
illustration.

Anti-vibration elements

Four anti-vibration elements (arrows)
are installed between the powerhead
and the drive tube. Have the system
checked if there is a noticeable increase
in vibrations.

Both vibration gaps (arrows) are preset
to the same width at the factory. If the
size of the two vibration gaps varies
greatly and/or one of them closes up,
have your servicing dealer repair the
anti-vibration system.

Wear Guard on AV Housing

32

There is an easily replaced wear guard
on the side of the anti-vibration housing.
The guard may wear as a result of
rubbing against the side plate of the
harness during operation and should be
replaced if necessary.

FS 460 C-M K, FS 490 C-M K

English

Maintenance and Care

The following intervals apply to normal operating conditions only. If your daily work­ing time is longer or operating conditions are difficult (very dusty work area, etc.),
shorten the specified intervals accordingly.

before starting work

after finishing work or daily

after each refueling stop

weekly

monthly

every 12 months

if problem

if damaged

Visual inspection (condition, leaks) XX

Complete machine

Control handle Check operation XX

Air filter, paper filter

Air filter, synthetic fabric filter

Fuel tank Clean X

Manual fuel pump (if fitted)

Pickup body in fuel tank

Engine idle speed

Spark plug

Cooling inlets

Cylinder fins Clean

Clean X

Replace any damaged parts X

Visual inspection XX

1)

Replace

Visual inspection XX

Clean X

Replace XX

Check X

Have repaired by servicing dealer

2)

Check

2)

Replace

Check – the cutting attachment must not
turn

If the cutting attachment turns when the
engine is idling, have machine repaired
by servicing dealer

Readjust electrode gap X

Replace after every 100 operating hours

Visual inspection X

Clean X

2)

2)

2)

XXX

XX

X

X

X

X

as required

X

FS 460 C-M K, FS 490 C-M K

33

English

The following intervals apply to normal operating conditions only. If your daily work­ing time is longer or operating conditions are difficult (very dusty work area, etc.),
shorten the specified intervals accordingly.

before starting work

after finishing work or daily

after each refueling stop

weekly

monthly

every 12 months

if problem

if damaged

as required

X

X

X

Spark arrestor3) in muffler

All accessible screws and nuts (not adjust­ing screws)

4)

Antivibration elements

2)

Check

Clean or replace

2)

Retighten X

Visual inspection

2)

Replace

5)

XX

X

Visual inspection XX

Cutting attachment

Replace X

Check tightness XX

Metal cutting attachment Sharpen XX

Exhaust port

Decoke after first 139 hours of opera­tion, then every 150 hours

Safety labels Replace X

1)

Only if there is a noticeable loss of engine power

2)

STIHL recommends that this work be done by a STIHL servicing dealer

3)

not in all versions, market-specific

4)

Tighten down the muffler mounting screws firmly after first 10 to 20 hours of operation.

5)

see chapter "Inspections and Maintenance by Dealer", section "Antivibration Elements"

34

FS 460 C-M K, FS 490 C-M K

English

Minimize Wear and Avoid
Damage

Observing the instructions in this manual
helps reduce the risk of unnecessary
wear and damage to the power tool.

The power tool must be operated,
maintained and stored with the due care
and attention described in this owner's
manual.

The user is responsible for all damage
caused by non-observance of the safety
precautions, operating and maintenance
instructions in this manual. This includes
in particular:

– Alterations or modifications to the

product not approved by STIHL.

– Using tools or accessories which

are neither approved or suitable for
the product or are of a poor quality.

– Using the product for purposes for

which it was not designed.

– Using the product for sports or

competitive events.

– Consequential damage caused by

continuing to use the product with
defective components.

Maintenance Work

All the operations described in the
"Maintenance Chart" must be performed
on a regular basis. If these maintenance
operations cannot be performed by the
owner, they should be performed by a
servicing dealer.

STIHL recommends that you have
servicing and repair work carried out
exclusively by an authorized STIHL
servicing dealer. STIHL dealers are
regularly given the opportunity to attend
training courses and are supplied with
the necessary technical information.

If these maintenance operations are not
carried out as specified, the user
assumes responsibility for any damage
that may occur. Among other parts, this
includes:

– Damage to the engine due to

neglect or deficient maintenance
(e.g. air and fuel filters), incorrect
carburetor adjustment or
inadequate cleaning of cooling air
inlets (intake ports, cylinder fins).

– Corrosion and other consequential

damage resulting from improper
storage.

– Damage to the machine resulting

from the use of poor quality
replacement parts.

Parts Subject to Wear and Tear

So me p arts of t he po wer tool are s ubj ect
to normal wear and tear even during
regular operation in accordance with
instructions and, depending on the type
and duration of use, have to be replaced
in good time. Among other parts, this
includes:

– Cutting attachments (all types)

– Mounting hardware for cutting

attachments (rider plate, nut, etc.)

– Deflectors for cutting attachments

– Clutch

– Filters (air, fuel)

– Rewind starter

– Throttle cable

– Spark plug

– Antivibration elements

– Wear guard on antivibration

housing

FS 460 C-M K, FS 490 C-M K

35

English

19

1

4

3

1

2

6

5

12

10

17

14

16

7

8

9

13

11

#

15

3BA042 KN

12

10

17

14

16

7

8

9

13

11

#

15

FS 460

FS 490

4

3

2

6

5

18

19

Main Parts

1 Tank cap
2 Starter grip
3 Shutter (winter operation)
4 Spark plug boot
5 Muffler
6 Guard plate
7 Throttle trigger
8 Stop switch
9 Throttle trigger lockout
10 Handlebar
11 Handle support
12 Wing screw
13 Carrying strip
14 Choke lever
15 Manual fuel pump
16 Filter cover
17 Fuel tank
18 Switch for handle heating (option)
19 Wear guard
# Serial number

36

FS 460 C-M K, FS 490 C-M K

English

002BA545 KN

2

1

4

002BA546 KN

3

1 Metal mowing attachment
2 Deflector for metal mowing

attachments only

3 Circular saw blade
4 Limit stop for circular saw blades

only

Specifications

Engine

Single cylinder two-stroke engine

FS 460 C

Displacement: 45.6 cc
Bore: 44 mm
Stroke: 30 mm
Engine power to

ISO 8893:
Idle speed: 2,700 rpm
Cut-off speed (rated): 12,300 rpm
Max. output shaft

speed (cutting
attachment): 10,130 rpm

FS 490 C

Displacement: 51.6 cc
Bore: 44.7 mm
Stroke: 32.9 mm
Engine power to

ISO 8893:
Idle speed: 2,500 rpm
Cut-off speed (rated): 12,300 rpm
Max. output shaft

speed (cutting
attachment): 10,130 rpm

Ignition System

2.2 kW (3.0 bhp)
at 9,500 rpm

2.4 kW (3.3 bhp)
at 9,500 rpm

FS 460 C
Spark plug (resistor

type):
Electrode gap: 0.5 mm

FS 490 C
Spark plug (resistor

type):
Electrode gap: 0.5 mm

Fuel System

All position diaphragm carburetor with
integral fuel pump

Fuel tank capacity:
FS 460 C: 750 cc (0.75 l)
FS 490 C: 990 cc (0.99 l)

Weight

Dry, without cutting attachment and
deflector

FS 460 C-EM K: 8.4 kg
FS 460 C-EM KW: 8.5 kg
FS 490 C-EM K: 9.2 kg
FS 490 C-EM KW: 9.4 kg

Overall length

without cutting attachment
FS460C-EMK: 1675mm
FS 460 C-EM KW: 1675 mm
FS490C-EMK: 1680mm
FS 490 C-EM KW: 1680 mm

NGK CMR6H
Bosch USR4AC

NGK BPMR7A

Electronic magneto ignition

FS 460 C-M K, FS 490 C-M K

37

English

Features

C Convenience features
E ErgoStart
M M-Tronic
K Short drive tube
W Handle heating
Z Fireproof equipment

Noise and Vibration Data

Noise and vibration data measurements
on FS units include idling and rated
maximum speed with the same duration
of exposure.

For further details on compliance with
Vibration Directive 2002/44/EC see
www.stihl.com/vib.

Sound pressure level L

to ISO 22868

peq

with metal cutting
attachment

FS 460 C-EM K: 101 dB(A)
FS 460 C-EM KW: 102 dB(A)
FS 490 C-EM K: 102 dB(A)
FS 490 C-EM KW: 102 dB(A)

Sound power level L

to ISO 22868

weq

with metal cutting
attachment

FS 460 C-EM K: 113 dB(A)
FS 460 C-EM KW: 114 dB(A)
FS 490 C-EM K: 115 dB(A)

Sound power level L

to ISO 22868

weq

with metal cutting
attachment

FS 490 C-EM KW: 113 dB(A)

Vibration measurement a

hv,eq

to

ISO 22867

with metal cutting
attachment

FS 460 C-EM K: 2.4 m/s
FS 460 C-EM KW: 2.4 m/s22.0 m/s
FS 490 C-EM K: 2.8 m/s22.8 m/s
FS 490 C-EM KW: 2.8 m/s22.8 m/s

Handle,
left

Handle,
right

2

2.0 m/s

2

2

2

2

The K-factor in accordance with
Directive 2006/42/EC is 2.5 dB(A) for
the sound pressure level and sound
power level; the K-factor in accordance
with Directive 2006/42/EC is 2.0 m/s2
for the vibration measurement.

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 (EC) No. 1907/2006
see www.stihl.com/reach.

Maintenance and Repairs

Users of this machine may only carry out
the maintenance and service work
described in this user manual. All other
repairs must be carried out by a
servicing dealer.

STIHL recommends that you have
servicing and repair work carried out
exclusively by an authorized STIHL
servicing dealer. STIHL dealers are
regularly given the opportunity to attend
training courses and are supplied with
the necessary technical information.

When repairing the machine, only use
replacement parts which have been
approved by STIHL for this power tool or
are technically identical. Only use high­quality replacement parts in order to
avoid the risk of accidents and damage
to the machine.

STIHL recommends the use of original
STIHL replacement parts.

Original STIHL parts can be identified by
the STIHL part number, the {
logo and the STIHL parts symbol K
(the symbol may appear alone on small
parts).

38

FS 460 C-M K, FS 490 C-M K

English

000BA073 KN

Disposal

Observe all country-specific waste
disposal rules and regulations.

STIHL products must not be thrown in
the garbage can. Take the product,
accessories and packaging to an
approved disposal site for environment­friendly recycling.

Contact your STIHL servicing dealer for
the latest information on waste disposal.

EC Declaration of Conformity

ANDREAS STIHL AG & Co. KG
Badstr. 115
D-71336 Waiblingen

confirms that the product described
below

Category: Clearing Saw
Make: STIHL
Model: FS 460 C-EM K

FS 460 C-EM KW
Serial identification: 4147
Model: FS 490 C-EM K

FS 490 C-EM KW
Serial identification: 4148
Displacement
FS 460 C-EM K 45.6 cc
FS 460 C-EM KW 45.6 cc
FS 490 C-EM K 51.6 cc
FS 490 C-EM KW 51.6 cc

conforms to the specifications of
Directives 2006/42/EC, 2004/108/EC
and 2000/14/EC and has been
developed and manufactured in
compliance with the following standards:

EN ISO 11806, EN 55012,
EN 61000-6-1

The measured and guaranteed sound
power levels were determined according
to Directive 2000/14/EC, Annex V, using
the ISO 10884 standard.

Measured sound power level

FS 460 C-EM K: 114 dB(A)
FS460C-EMKW: 114dB(A)
FS490C-EMKW: 116dB(A)
FS490C-EMKW: 116dB(A)

Guaranteed sound power level

FS460C-EMKW: 116dB(A)
FS460C-EMKW: 116dB(A)
FS490C-EMKW: 118dB(A)
FS490C-EMKW: 118dB(A)

Technical documents deposited at:

ANDREAS STIHL AG & Co. KG
Produktzulassung (Product Licensing)

The year of manufacture and serial
number are applied to the product.

Done at Waiblingen, 18.01.2013

ANDREAS STIHL AG & Co. KG

Thomas Elsner

Director Group Product Management

FS 460 C-M K, FS 490 C-M K

39

English

40

FS 460 C-M K, FS 490 C-M K

0458-748-0121-D

englisch

G

www.stihl.com

*04587480121D*

0458-748-0121-D