STIHL KM 56 R
Instruction Manual
Contents
English
KombiSystem 2
Guide to Using this Manual 2
Safety Precautions and Working
Techniques 3
Approved KombiTools 7
Mounting the Loop Handle 7
Carrying ring 9
Fuel 9
Original Instruction ManualPrinted on chlorine-free paper
Fueling 10
Starting / Stopping the Engine 11
Operating Instructions 13
Cleaning the Air Filter 13
Adjusting the Carburetor 14
Spark Plug 14
Engine Running Behavior 15
Storing the Machine 16
Maintenance and Care 17
Minimize Wear and Avoid Damage 18
Main Parts 19
Specifications 20
Maintenance and Repairs 21
Disposal 21
Printing inks contain vegetable oils, paper can be recycled.
EC Declaration of Conformity 21
UKCA Declaration of Conformity 22
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 trouble-free 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, 2021
0458-540-0121-D. VA0.H21.
0000000933_027_GB
KM 56 R, KM 56 RC
This instruction manual is protected by copyright. All rights reserved, especially the rights to reproduce, translate and process
with electronic systems.
1
English
KombiSystem Guide to Using this Manual
In the STIHL KombiSystem a number of
different KombiEngines and KombiTools
can be combined to produce a power
tool. In this instruction manual the
functional unit formed by the
KombiEngine and KombiTool is referred
to as the power tool.
Therefore, the separate instruction
manuals for the KombiEngine and
KombiTool should be used together for
the power tool.
Always read and and make sure you
understand both instruction manuals
before using your power tool for the first
time and keep them in a safe place for
future reference.
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
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.
Tube of grease
Intake air: Summer
operation
Intake air: Winter
operation
Handle heating
2
KM 56 R, KM 56 RC
English
Safety Precautions and
Working Techniques
Special safety precautions must be observed
when operating a power
tool.
Both user manuals (KombiEngine and KombiTool)
must be read through
attentively before using
the unit for the first time
and kept in a safe place
for future reference. Noncompliance with the user
manuals may cause serious or even fatal injury.
Observe all applicable local safety
regulations, e.g. by trade organizations,
social insurance institutions, labor safety
authorities etc.
If you have never used a power tool
before: Have your dealer or other
experienced user show you how to
operate your machine – or attend a
special course to learn how to operate it.
Minors should never be allowed to use
the machine – except for apprentices
over the age of 16 when working under
supervision.
Children, animals and bystanders must
remain at a distance.
When not using the machine, it must be
laid down in such a way that it does not
endanger anyone. Ensure that the
machine cannot be used without
authorization.
The user is responsible for accidents or
risks involving third parties or their
property.
The machine should only be provided or
loaned to people familiar with this model
and its operation. The KombiEngine and
KombiTool User Manuals should always
be handed over with the machine.
The use of noise emitting power tools
may be restricted to certain times by
national or local regulations.
Anyone operating the machine must be
well rested, in good physical health and
in good mental condition.
If you have any condition that might be
aggravated by strenuous work, check
with your doctor before operating a
machine.
If you have a pacemaker: The ignition
system of your machine produces an
electromagnetic field of 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.
Anyone who has consumed alcohol or
drugs or medicines affecting their ability
to react must not operate a power tool.
Use your power tool only for the
applications described in the User
Manual of the KombiTool you are using.
The machine must not be used for any
other purposes – risk of accidents!
Do not operate the KombiEngine without
a properly mounted KombiTool since
this may result in damage to the
machine.
Only use KombiTools and accessories
that are explicitly approved for this
power tool by STIHL or are technically
identical. It is important that you read the
chapter on "Approved KombiTools". If
you have any questions in this respect,
consult your dealer. Use only high
quality parts and accessories. in order to
avoid the risk of accidents and damage
to the machine.
STIHL recommends the use of original
STIHL tools and accessories. They are
specifically designed to match the
product and meet your performance
requirements.
Never attempt to modify your power tool
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 high-pressure washer to
clean the power tool. The solid jet of
water may damage parts of the unit.
Clothing and equipment
Wear proper protective clothing and
equipment.
Do not wear clothing
which could become
trapped in wood, brush or
moving parts of the
machine. Do not wear a
scarf, necktie or jewelry.
Tie up and confine long
hair above your
shoulders.
See also notes on "Clothing and
Equipment" in the User Manual of the
KombiTool you are using.
KM 56 R, KM 56 RC
3
English
002BA271 KN
Transporting the machine
Always stop the engine.
By vehicle: When transporting in a
vehicle, properly secure your machine to
prevent turnover, damage and fuel
spillage.
See also notes on "Transporting the
Machine" in the User Manual of the
KombiTool you are using.
Refueling
Gasoline is highly flammable – keep away from
fire or flame – do not spill
any fuel – no smoking.
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.
Only refuel the machine in a well
ventilated place. If fuel has been spilled,
immediately clean the machine – do not
allow your clothes to be splashed with
fuel. If that happens, change your
clothes at once.
After fueling, tighten
down the screw-type fuel
cap as securely as
possible.
This helps reduce the risk of unit
vibrations causing an incorrectly
tightened fuel cap to loosen or come off
and spill quantities of fuel.
Check for leaks. Do not start the engine
if there is a fuel leak – serious or fatal
burns could result!
Before starting
Check that your power tool is properly
assembled and in good condition – refer
to appropriate chapters in the User
Manuals:
– Check the fuel system for leaks,
especially the visible parts, e. g.,
fuel cap, hose connections, manual
fuel pump (only in machines with a
manual fuel pump). In case of
leakage and damage, do not start
the engine – risk of fire! Have the
machine serviced by a dealer
before using it
– 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 easily to
0
– Check the choke lever, throttle
trigger and throttle trigger lockout
for smooth action - throttle trigger
must return automatically to idle
position. The choke lever must
spring back from the g and <
positions 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
sparking that could ignite
combustible fumes and cause a fire!
– Never attempt to modify the controls
or safety devices
– Keep the handles dry and clean –
free from oil and dirt – this is
important for safe control of the
machine
– Adjust the harness and handle(s) to
suit your height and reach
To reduce the risk of personal injury, do
not operate your power tool if it is
damaged or not properly assembled!
To prepare for emergencies when using
a harness: Practice setting down the
machine quickly. To avoid damage, do
not throw the machine to the ground
when practicing.
See also notes on "Before Starting" in
the User Manual of the KombiTool you
are using.
Starting the engine
Start the engine at least 3 meters from
the fueling spot, outdoors only.
Place the power tool on firm ground in
an open area. Make sure you have good
balance and secure footing. Hold the
4
KM 56 R, KM 56 RC
English
002BA273 KN
power tool securely. The attachment
must be clear of the ground and all other
obstructions because it may begin to run
when the engine starts.
To reduce the risk of injury, avoid
contact with the attachment
Do not drop-start the power tool – start
the engine as described in the User
Manual. Note that the attachment
continues to run for a short period after
you let go of the throttle trigger –
flywheel effect.
Check idle speed setting: The
attachment must be stationary when the
engine is idling with the throttle trigger
released.
Keep easily combustible materials
(e. g., wood chips, bark, dry grass, fuel)
away from hot exhaust gases and hot
muffler surfaces – risk of fire!
See also notes on "Starting the Engine"
in the User Manual of the KombiTool you
are using.
Holding and guiding the machine
Always hold the unit firmly with both
hands on the handles.
Make sure you always have good
balance and secure footing.
Left hand on loop handle, right hand on
control handle, even if you are lefthanded.
While working
In the event of impending danger or in
an emergency, switch off the engine
immediately – move the stop switch in
the direction of 0.
The correct engine idle speed is
important to ensure that the attachment
stops moving when you let go of the
throttle trigger. If the working tool still
moves at idle speed, have your dealer
make proper adjustments or repairs.
Check and correct the idle speed setting
at regular intervals. STIHL recommends
you have this work done by a STIHL
servicing dealer.
Be particularly alert and cautious when
wearing hearing protection because
your ability to hear warnings (shouts,
alarms, etc.) is restricted.
Take breaks when you start getting tired
or feeling fatigue – risk of accidents!
Work calmly and carefully – in daylight
conditions and only when visibility is
good. Proceed with caution, do not put
others in danger.
Use your power tool only in the areas
specified in the KombiTool User Manual.
As soon as the engine is
running, the power
machine generates toxic
exhaust gas. These
gases may be odorless
and invisible and may
contain unburned hydrocarbons and benzene.
Never run the engine
indoors or in poorly ventilated locations, even if
your model is equipped
with a catalytic converter.
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. Combustible fuel vapor may
escape from the fuel system.
KM 56 R, KM 56 RC
5
English
Dust, fumes and smoke produced while
working may be hazardous to health!
Wear respiratory protection in case of
heavy dust or smoke emission.
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 in particular
that the fuel system has no leaks and the
safety equipment is fully operative.
Never use a power tool that is no longer
safe to operate. In case of doubt, contact
a dealer.
Do not operate your power tool with the
choke lever in the warm start position <
– the engine speed cannot be controlled
in this position.
Before you leave the machine: Shut the
engine off.
To reduce the risk of injury, always shut
off the engine before changing the
KombiTool or attachment.
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 genuine
STIHL replacement parts. These parts
are specifically designed to match your
machine 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.
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.
6
KM 56 R, KM 56 RC
English
002BA586 KN
002BA587 KN
4
002BA588 KN
3
5
3
5
1
2
1
2
Approved KombiTools
The following STIHL KombiTools may
be attached to the KombiEngine:
KombiTool
FS-KM Scythe with mowing
FS-KM
FSB-KM Scythe with mowing
HL-KM 145° Long reach hedge
HL-KM 0° Long-reach hedge
FH-KM 145° Scrub cutter
BG-KM Blower
HT-KM Pole pruner
BF-KM Cultivator
FCB-KM Edger
FCS-KM Edger
SP-KM Harvesters
KB-KM Bristle brush
KW-KM Sweeper drum
1)
1)
The included barrier bar on the loop
handle must be used - see also
"Mounting the Loop Handle”
Intended use
head
Scythe with grass
cutting blade
head
trimmer, adjustable
trimmer
assembly
Mounting the Loop Handle
The new machine is delivered with the
loop handle pre-assembled on the unit.
Using the Barrier Bar
The barrier bar comes as a standard
with the machine and must be mounted
to the loop handle.
Mounting the Barrier Bar
N Take out the screws (1) and remove
them along with washers (2) and
nuts (3)
N Remove the loop handle (4) and
clamps (5)
KM 56 R, KM 56 RC
7
English
2
002BA098 KN
1
1
5
2
4
002BA589 KN
3
6
7
7
A
002BA598 KN
N Insert the square nuts (1) in the
barrier bar (2) – the holes must line
up
N Insert the clamp (3) in the loop
handle (4) and position them
together on the shaft (5)
N Position the clamp (6) against the
shaft
N Position the barrier bar (2) – note
position!
N Line up the holes
N Insert the screws (7) in the holes
and screw them into the barrier bar
as far as they will go
N Go to "Adjusting and Securing the
Loop Handle"
Always leave the barrier bar attached.
Orienting and Securing the Loop Handle
By changing the distance (A), the
handle can be moved into the best
position for the operator and application.
N Secure the loop handle
N Line up the loop handle
N Tighten down the screws firmly –
lock the nuts if necessary
8
KM 56 R, KM 56 RC
English
547BA008 KN
Carrying ring
The carrying ring is integrated in the
front end of the control handle.
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
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
If you mix the fuel yourself, use only
STIHL two-stroke 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-L-EGD.
STIHL specifies STIHL HP Ultra twostroke engine oil or an equivalent highperformance engine oil in order to
maintain emission limits over the
machine’s service life.
Mix Ratio
STIHL 50:1 two-stroke engine oil: 50
parts gasoline to 1 part oil
Examples
KM 56 R, KM 56 RC
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.
Gasoline STIHL engine oil 50:1
Liters Liters (ml)
1 0.02 (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.
9
English
547BA045 KN
002BA447 KN
002BA448 KN
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
Preparations
N Before fueling, clean the filler cap
and the area around it to ensure that
no dirt falls into the tank.
N Position the machine so that the
filler cap is facing up.
Opening screw-type tank 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 (special accessory).
Closing screw-type tank cap
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.
10
N Turn the cap counterclockwise until
it can be removed from the tank
opening.
N Remove the cap.
KM 56 R, KM 56 RC
English
002BA269 KN
1
3
2
4
547BA015 KN
5
547BA016 KN
5
547BA017 KN
547BA018 KN
Starting / Stopping the
Engine
Controls
1 Throttle trigger lockout
2 Throttle trigger
3 Stop switch with Run and 0 = Stop
positions.
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. If the stop switch is
moved to the 0 position, the ignition is
switched off. The ignition is switched on
again automatically after the engine
stops.
Starting the Engine
N Press the manual fuel pump
bulb (4) at least five times – even if
the bulb is filled with fuel.
Cold engine (cold start)
N Press in the choke lever (5) and turn
it to g at the same time.
Warm engine (warm start)
N Press in the choke lever (5) and turn
it to < at the same time.
Also use this setting if the engine has
been running but is still cold.
Cranking
N Place the unit on the ground: Check
that the working tool is not touching
the ground or any other obstacles –
see also "Starting / Stopping the
Engine" in the KombiTool
instruction manual.
N Make sure you have a safe and
secure footing.
N Hold the unit firmly on the ground
with your left hand and press down
– do not touch the throttle trigger or
lockout lever.
NOTICE
Do not stand or kneel on the drive tube.
KM 56 R, KM 56 RC
11
English
547BA020 KN
547BA021 KN
N Hold the starter grip with your right
hand.
Version without ErgoStart
N Pull the starter grip slowly until you
feel it engage and then give it a brisk
strong pull.
Version with ErgoStart
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 Press down the throttle trigger
lockout and open the throttle – the
choke lever moves to the run
position F. After a cold start, warm
up the engine by opening the
throttle several times.
WARNING
Make sure the carburetor is correctly
adjusted. The working tool must not
rotate when the engine is idling.
Your machine is now ready for
operation.
Stopping the Engine
N Move the stop switch in the direction
of 0 – the engine stops – release
the stop switch – it springs back to
the run position.
Other Hints on Starting
Engine stalls in cold start position g or
under acceleration
N Move the choke lever to < and
continue cranking until the engine
runs.
Engine does not start in warm start
position <
N Move the choke lever to g and
continue cranking until the engine
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 Set the choke lever to suit the
engine temperature.
N Now start the engine.
12
KM 56 R, KM 56 RC
Operating Instructions Cleaning the Air Filter
1
547BA022 KN
2
3
547BA023 KN
4
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".
If there is a noticeable loss of engine
power
N Move the choke lever (1) to <.
N Turn the screw (2) in the filter
cover (3) counterclockwise until the
cover is loose.
N Ease the filter cover (3) over the
choke lever and lift it away.
N Clean away loose dirt from around
the filter.
N Reach into the recess (4) in the filter
housing and take out the felt
filter (5).
N Fit a new felt filter element (5). As a
temporary measure you can knock it
out on the palm of your hand or blow
it out with compressed air. Do not
wash.
NOTICE
Replace damaged parts.
N Fit the felt filter (5) in the filter
housing, make sure it is properly
seated – the arrow points to the
recess.
N Move the choke lever (1) to <.
N Fit the filter cover in position,
making sure the screw is square.
Tighten down the screw.
KM 56 R, KM 56 RC
13
English
0815BA006 KN
1
547BA041 KN
2
Adjusting the Carburetor
The carburetor comes from the factory
with a standard setting.
On this machine it is no longer
necessary to adjust the carburetor.
It has been set at the factory to provide
an optimum fuel-air mixture in all
locations and operating conditions.
Adjusting Idle Speed
Engine stops while idling
N Warm up the engine for about
3 minutes.
N Turn the idle speed screw (LA)
slowly clockwise until the engine
runs smoothly – the cutting
attachment must not move.
Cutting attachment runs when engine is
idling
N Turn the idle speed screw (LA)
counterclockwise until the cutting
attachment stops running and then
turn the screw about another 1/2 to
3/4 turn in the same direction.
WARNING
If the working tool or cutting attachment
continues to run when the engine is
idling, have your machine checked and
repaired by your 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 Shut off the engine.
N Remove the spark plug boot (1).
N Unscrew the spark plug (2).
14
KM 56 R, KM 56 RC
English
000BA039 KN
A
1
000BA045 KN
Checking the Spark Plug
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.
N Use resistor type spark plugs with a
properly tightened adapter nut.
Installing the Spark Plug
N Screw the spark plug into the
cylinder.
N Press the boot firmly onto the spark
plug.
Engine Running Behavior
If engine running behavior is
unsatisfactory even though the air filter
is clean and the carburetor is properly
adjusted, the cause may be the muffler.
Have the muffler checked for
contamination (carbonization) by your
servicing dealer.
STIHL recommends that you have
servicing and repair work carried out
exclusively by an authorized STIHL
servicing dealer.
WARNING
Arcing may occur if the adapter nut (1) is
loose or missing. Working in an easily
combustible or explosive atmosphere
may cause a fire or an explosion. This
can result result in serious injuries or
damage to property.
KM 56 R, KM 56 RC
15
English
Storing the Machine
For periods of 3 months or longer
N Drain and clean the fuel tank in a
well ventilated area.
N Dispose of fuel properly in
accordance with local
environmental requirements.
N Run the engine until the carburetor
is dry – this helps prevent the
carburetor diaphragms sticking
together.
N Thoroughly clean the machine – pay
special attention to the air filter.
N Remove, clean and check the
attachment. Coat metal parts with
corrosion inhibiting oil.
N Store the machine in a dry and
secure location Keep out of the
reach of children and other
unauthorized persons.
16
KM 56 R, KM 56 RC
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
as required
Complete machine
Control handle Check operation XX
Air filter
Manual fuel pump
Pickup body in fuel tank
Fuel tank Clean XX
Carburetor
Spark plug
Cooling inlets
All accessible screws and nuts (not adjusting screws)
Safety labels Replace X
1)
STIHL recommends an authorized STIHL servicing dealer.
Visual inspection (condition, leaks) X X
Clean X
Clean XX
Replace X
Check X
Have repaired by servicing dealer
Check X
Replace XXX
Check idle adjustment – the working/cutting attachment must not move
Readjust idle X
Readjust electrode gap X
Replace after every 100 operating hours
Visual inspection X
Clean X
Retighten X
1)
X
XX
KM 56 R, KM 56 RC
17
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
Some parts of the power tool are subject
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:
– Clutch
– Filters (air, fuel)
– Rewind starter
– Spark plug
18
KM 56 R, KM 56 RC
Main Parts
18
19
16
17
15
20
English
1 Manual fuel pump
2 Fuel cap
1
4
2
3
5
9
6
13
14
12
8
7
3 Tank
4 Starter grip
5 Muffler
6 Carburetor adjusting screws
7 Choke lever
8 Air filter cover
9 Spark plug boot
10 Machine support
11 Throttle trigger
12 Throttle trigger lockout
13 Stop switch
14 Carrying ring
15 Loop handle
16 Barrier bar
17 Shaft
18 Coupling sleeve
19 Wing screw
20 Sleeve
# Serial number
11
10
#
540BA010 STI
KM 56 R, KM 56 RC
19
English
Specifications
Engine
Single-cylinder two-stroke engine
Displacement: 27.2cm
Cylinder bore: 34 mm
Piston stroke: 30 mm
Engine power to
ISO 8893:
Idle speed: 2800 rpm
Cut-off speed (nomi-
nal value): 10000 rpm
Ignition system
Electronic magneto ignition
Spark plug
(suppressed):
Electrode gap: 0.5 mm
Fuel system
All-position diaphragm carburetor with
integral fuel pump
Fuel tank capacity: 340 cm
Weight
without fuel, without KombiTool
KM 56 RC with ErgoStart: 4.3 kg
3
0.8 kW (1.1 hp)
at 8500 1/min
NGK CMR 6 H,
BOSCH USR 4
AC
3
(0.34 l)
Sound and Vibration Levels
For further details on compliance with
Vibration Directive 2002/44/EC see
www.stihl.com/vib
KombiTool
For version see "Approved
KombiTools".
To determine the noise and vibration
values, idle speed and nominal
maximum speed are considered in the
following ratios:
for FCS-KM, FCB-KM,
FS-KM, FSB-KM, FH-KM
and HT-KM 1 to 1
for HL-KM 1 to 4
for BF-KM, KB-KM, KW-KM,
BG-KM and SP-KM 1 to 6
The exact noise and vibration
specifications depend on the KombiTool
being used and are described in the
User Manual of the KombiTool.
Sound pressure level L
measured
peq
according to ISO 22868, ISO 11201,
ISO 11789
KM 56 RC: 90 dB(A) ... 96 dB(A)
Sound power level L
measured
w
according to ISO 22868, ISO 3744
KM 56 RC: 103 dB(A) ... 109 dB(A)
Vibration level a
to ISO 20643,
hv,eq
ISO 22867, ISO 11789
Handle, left
KM 56 RC: 4.7 m/s2... 8.5 m/s
2
Handle, right
KM 56 RC: 4.8 m/s
2
... 8.2 m/s
2
The K-factor in accordance with
Directive 2006/42/EC is 2.0 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/s
2
for the vibration level.
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.
Exhaust Emissions
The CO2value measured in the EU type
approval procedure is specified at
www.stihl.com/co2.
The measured CO
value was
2
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 maintenance
described in this instruction manual. The
type approval expires if the engine is
modified in any way.
20
KM 56 R, KM 56 RC
English
000BA073 KN
Maintenance and Repairs Disposal
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).
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
Germany
declare under our sole responsibility that
Designation: KombiEngine
Make: STIHL
Series: KM 56 R
KM 56 RC
KM 56 RC-E
Serial identification
number: 4144
Displacement: 27.2cm
conforms to the relevant provisions of
Directives 2011/65/EU, 2006/42/EC and
2014/30/EU and has been developed
and manufactured in compliance with
the following standards in the versions
valid on the date of production:
EN ISO 12100, EN 55012,
EN 61000-6-1 (in conjunction with the
following KombiTools: BF-KM, BG-KM,
FCB-KM, FCS-KM, FH-KM, FS-KM,
FSB-KM, HL-KM, HT-KM, KB-KM,
KW-KM and SP-KM)
The KombiEngine described here may
be operated only in conjunction with the
KombiTools approved by STIHL for use
with this KombiEngine.
Technical documents deposited at:
ANDREAS STIHL AG & Co. KG
Produktzulassung
The year of manufacture and serial
number are applied to the product.
3
KM 56 R, KM 56 RC
21
English
Done at Waiblingen, 15.07.2021
ANDREAS STIHL AG & Co. KG
pp
Dr. Jürgen Hoffmann
Director Product Certification &
Regulatory Affairs
UKCA Declaration of
Conformity
ANDREAS STIHL AG & Co. KG
Badstr. 115
D-71336 Waiblingen
Germany
declare under our sole responsibility that
Designation: KombiEngine
Make: STIHL
Series: KM 56 R
KM 56 RC
KM 56 RC-E
Serial identification
number: 4144
Displacement: 27.2cm
complies with the relevant provisions of
the UK regulations The Restriction of the
Use of Certain Hazardous Substances
in Electrical and Electronic Equipment
Regulations 2012, Supply of Machinery
(Safety) Regulations 2008, and
Electromagnetic Compatibility
Regulations 2016 and has been
developed and manufactured in
accordance with the versions of the
following standards valid on the date of
manufacture:
EN ISO 12100, EN 55012,
EN 61000-6-1 (in conjunction with the
following KombiTools: BF-KM, BG-KM,
FCB-KM, FCS-KM, FH-KM, FS-KM,
FSB-KM, HL-KM, HT-KM, KB-KM,
KW-KM and SP-KM)
The KombiEngine described here may
be operated only in conjunction with the
KombiTools approved by STIHL for use
with this KombiEngine.
Technical documents deposited at:
3
ANDREAS STIHL AG & Co. KG
The year of manufacture and serial
number are indicated on the product.
Done at Waiblingen, 15.07.2021
ANDREAS STIHL AG & Co. KG
pp
Dr. Jürgen Hoffmann
Director Product Certification &
Regulatory Affairs
22
KM 56 R, KM 56 RC
English
KM 56 R, KM 56 RC
23
English
24
KM 56 R, KM 56 RC
0458-540-0121-D
englisch
G
www.stihl.com
*04585400121D*
0458-540-0121-D
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