STIHL MM 56 Instruction Manual - AM Hire
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STIHL MM 56 Instruction Manual
English
Contents
MultiSystem 2 Dear Customer,
Guide to Using this Manual 2 Thank you for choosing a quality
Safety Precautions and Working engineered STIHL product.
Techniques 2
Original Instruction Manual
It has been built using modern
Approved MultiTools 7 production techniques and
Adjusting the bicycle handle 8 comprehensive quality assurance.
Every effort has been made to ensure
Fuel 8
your satisfaction and trouble-free use of
Fueling 9 the product.
Starting / Stopping the Engine 10
Please contact your dealer or our sales
Extra weight 12 company if you have any queries
Printing inks contain vegetable oils, paper can be recycled.
Wheels 13 concerning this product.
Operating Instructions 14 Your
Replacing the Air Filter 14
Adjusting the Carburetor 15
Spark Arresting Screen in Muffler 15
Spark Plug 15
Printed on chlorine-free paper
Engine Running Behavior 16
Dr. Nikolas Stihl
Storing the Machine 17
Maintenance and Care 18
Minimize Wear and Avoid Damage 19
Main Parts 20
Specifications 21
Maintenance and Repairs 22
Disposal 23
EC Declaration of Conformity 23
© ANDREAS STIHL AG & Co. KG, 2019
0458-489-8321-A. VA2.F19.
0000008154_004_GB
This instruction manual is protected by copyright. All rights reserved, especially the rights to reproduce, translate and process
with electronic systems.
MM 56 C 1English
MultiSystem Guide to Using this Manual Safety Precautions and
Working Techniques
Special safety precau-
Pictograms
tions must be observed
when working with a
All the pictograms attached to the power tool.
machine are shown and explained in this
manual.
Always read and and
+ Symbols in text
make sure you under-
stand both instruction
manuals (MultiEngine
and MultiTool) before
WARNING using your power tool for
Warning where there is a risk of an the first time and keep
accident or personal injury or serious them in a safe place for
damage to property. future reference. Non-
0000-GXX-5900-A0
observance of the safety
+ NOTICE
precautions may result in
serious or even fatal
Caution where there is a risk of injury.
In the STIHL MultiSystem a number of damaging the machine or its individual Observe all applicable local safety
different MultiEngines and MultiTools components. regulations, standards and ordinances.
can be combined to produce a power If you have not used this type of power
tool. In this instruction manual the Engineering improvements
tool before: Have your dealer or other
functional unit formed by the experienced user show you how it is
MultiEngine and MultiTool is referred to operated or attend a special course in its
STIHL's philosophy is to continually
as the power tool. operation.
improve all of its products. For this
Therefore, the separate instruction reason we may modify the design, Minors should never be allowed to use a
manuals for the MultiEngine and engineering and appearance of our power tool.
MultiTool should be used together for products periodically.
the power tool. Keep bystanders, especially children,
Therefore, some changes, modifications and animals away from the work area.
Always read and and make sure you and improvements may not be covered
understand both instruction manuals in this manual. When the power tool is not in use, shut it
before using your power tool for the first off so that it does not endanger others.
time and keep them in a safe place for Secure it against unauthorized use.
future reference. The user is responsible for avoiding
injury to third parties or damage to their
property.
2 MM 56 CEnglish
Lend or rent your power tool only to identical. It is important that you read the
persons who are familiar with this model chapter on "Approved MultiTools". If you WARNING
and its operation – do not lend of rent have any questions in this respect,
To reduce the risk of eye
your power tool without the MultiEngine consult a servicing dealer. Use only high
injuries, wear close-fit-
and MultiTool instruction manuals. quality tools and accessories in order to
ting safety glasses in
avoid the risk of accidents and damage
The use of noise emitting power tools accordance with Euro-
to the machine.
may be restricted to certain times by pean Standard EN 166.
national or local regulations. STIHL recommends the use of genuine Make sure the safety
STIHL tools and accessories. They are glasses are a comforta-
To operate the power tool you must be
specifically designed to match the ble and snug fit.
rested, in good physical condition and
product and meet your performance
mental health. Wear hearing protection, e.g. earplugs
requirements.
or ear muffs.
If you have any condition that might be
Never attempt to modify your power tool
aggravated by strenuous work, check Wear a face shield and make sure it is a
in any way since this may increase the
with your doctor before operating a good fit. A face shield alone does not
risk of personal injury. STIHL excludes
power tool. provide adequate eye protection.
all liability for personal injury and
Persons with pacemakers only: The damage to property caused while using See also notes on "Clothing and
ignition system of your power tool unauthorized attachments. Equipment" in the instruction manual of
produces an electromagnetic field of a the MultiTool you are using.
Do not use a pressure washer to clean
very low intensity. This field may
your power tool. The solid jet of water
interfere with some pacemakers. STIHL Transporting the Power Tool
may damage parts of the power tool.
recommends that persons with
pacemakers consult their physician and
the pacemaker manufacturer to reduce Clothing and Equipment
any health risk.
Do not operate the power tool if you are Wear proper protective clothing and
under the influence of any substance equipment.
0000-GXX-0550-A0
(drugs, alcohol) which might impair Avoid clothing that could get caught on
vision, dexterity or judgment. branches or brush or moving parts of the
Use your power tool only for the machine. Do not wear a scarf, necktie or
applications described in the instruction jewelry. Tie up and confine long hair
manual of the MultiTool you are using. (e.g. with a hair net, cap, hard hat, etc.).
Always shut off the engine.
Do not use your power tool for any other Wear steel-toed safety Carry the power tool by the carrying
purpose because of the increased risk of boots with non-slip soles. handle or loop handle with the
accidents. attachment facing forwards.
Do not operate the MultiEngine without a Do not touch hot parts of the machine
properly mounted MultiTool since this since burn injury will result.
may result in damage to the machine.
The power tool can turn over or move
Only use MultiTools and accessories while being transported. This may result
that are explicitly approved for this in personal injuries and damage to
power tool by STIHL or are technically property. Secure the power tool with
MM 56 C 3English
lashing straps or a net to prevent it Check for leakage. To – Keep the handles dry and clean –
turning over and moving. Allow the reduce the risk of serious free from oil and dirt – for safe
power tool to cool down before of fatal burn injuries, do control of the power tool.
transporting it by vehicle. Position the not start or run the engine – Swing the bicycle handle to the
power tool so that no fuel can escape. until leak is fixed. normal operating position and
See also notes on "Transporting the tighten it down firmly with the rotary
Power Tool" in the instruction manual of Before Starting knob. See "Adjusting the
the MultiTool you are using. Handlebar".
Check that your power tool is properly To reduce the risk of accidents, operate
Fueling assembled and in good condition – refer your power tool only if it is in a safe
to appropriate chapters in the instruction condition.
manuals.
Gasoline is an extremely See also notes on "Before Starting" in
flammable fuel. Keep – Check the fuel system for leaks, the instruction manual of the MultiTool
clear of naked flames. Do paying special attention to visible you are using.
not spill any fuel – do not parts such as the tank cap, hose
smoke. connections and the manual fuel Check the position of the gearbox for the
pump (on machines so equipped). If MultiTool you have mounted and correct
Always shut off the engine before it if necessary. This helps reduce the risk
there are any leaks or damage, do
refueling. of injury from the MultiTool rotating in the
not start the engine – risk of fire.
Do not fuel a hot engine – fuel may spill Have your machine repaired by a wrong direction.
and cause a fire. servicing dealer before using it See "Mounting the MultiTool" in the
again. instruction manual of the MultiTool you
Open the fuel cap carefully to allow any
pressure build-up in the tank to release – Use only an approved combination are using.
slowly and avoid fuel spillage. of attachment and deflector. All
parts must be assembled properly
Fuel your power tool only in well-
and securely.
ventilated areas. If you spill fuel, wipe
the machine immediately – if fuel gets on – The stop switch must move freely.
your clothing, change immediately.
– Smooth action of throttle trigger
After fueling, tighten lockout and throttle trigger – the
down the screw-type fuel throttle trigger must return
cap as securely as automatically to the idle position.
possible. – Check that the spark plug boot is
secure – a loose boot may cause
This reduces the risk of unit vibrations arcing that could ignite combustible
causing the fuel cap to loosen or come fumes and cause a fire.
off and spill quantities of fuel. – Never attempt to modify the controls
or the safety devices in any way. If you use metal tools, position the
gearbox so that the axle is below the
drive shaft.
4 MM 56 CEnglish
Use for: Your power tool is for operation by one
person only. To reduce the risk of injury
– BF-MM pick tines
from contact with the rotating tool, do not
– BK-MM bolo tines allow other persons within a radius of 5
– FC-MM edger meters of your own position – even when
starting.
469BA045 KN
– RL-MM aerator
The tool begins to rotate
– MF-MM dethatcher as soon as the engine is
If you use sweeping attachments, started in the "Start" posi-
position the gearbox so that the axle is tion. Always stand to one Always hold the power tool firmly with
above the drive shaft. side of the machine when both hands on the handles.
starting – never in front of
Use for: Right handle on control handle, left hand
the tools. To reduce the
on left handle.
– KB-MM bristle brush risk of injury, avoid con-
tact with the working tool.
– KW-MM PowerSweep During Operation
Do not drop start the power tool – start
the engine as described in the
instruction manual. Note that the In the event of imminent danger or in an
attachment continues to run for a short emergency, switch off the engine
period after you let go of the throttle immediately – operate the stop switch.
trigger – flywheel effect.
Check idle speed setting: The
5m (16ft)
attachment must be stationary when the
To use attachments for mowing grass, engine is idling with the throttle trigger
trimming and thinning out, remove the released.
gearbox. To reduce the risk of fire, keep hot
Use for: exhaust gases and hot muffler away
from easily combustible materials (e.g. To reduce the risk of injury from contact
– FS-MM brushcutter wood chips, bark, dry grass, fuel). with the tool and thrown objects, do not
See also notes on "Starting / Stopping allow any other persons within a radius
Starting the Engine of 5 meters of your own position. To
the Engine" in the instruction manual of
the MultiTool you are using. reduce the risk of damage to property,
Start the engine at least 3 meters from also maintain this distance from other
the fueling spot, outdoors only. Holding and Controlling the Power Tool objects (vehicles, windows).
Place the power tool on firm ground in The correct engine idle speed is
an open area. Make sure you have good important to ensure that the attachment
Make sure you always have good
balance and secure footing. Hold the stops moving when you let go of the
balance and secure footing.
power tool securely. The attachment throttle trigger. If the attachment
must be clear of the ground and all other continues to move when the engine is
obstructions because it may begin to run idling, have your dealer check the
when the engine starts. machine and make proper adjustments
MM 56 C 5English
or repairs. Check and correct the idle To reduce the risk of accidents, stop in particular for leaks and make sure the
speed setting regularly. STIHL work immediately in the event of safety devices are working properly. Do
recommends an authorized STIHL nausea, headache, visual disturbances not continue operating your power tool if
servicing dealer. (e.g. reduced field of vision), problems it is damaged. In case of doubt, consult
with hearing, dizziness, deterioration in your servicing dealer.
Do not operate your power tool in the
ability to concentrate. Apart from other
starting throttle position – engine speed To reduce the risk of injury, shut off the
possibilities, these symptoms may be
cannot be controlled in this position. engine before changing the attachment.
caused by an excessively high
Be particularly alert and cautious when concentration of exhaust gases in the After finishing work or before leaving the
wearing hearing protection because work area. power tool unattended: Shut off the
your ability to hear warnings (shouts, engine.
Operate your power tool so that it
alarms, etc.) is restricted.
produces a minimum of noise and See also notes on "During Operation" in
To reduce the risk of accidents, take a emissions – do not run the engine the instruction manual of the MultiTool
break in good time to avoid tiredness or unnecessarily, accelerate the engine you are using.
exhaustion. only when working.
Work calmly and carefully – in daylight To reduce the risk of fire, do not smoke Vibrations
conditions and only when visibility is while operating or standing near your
good. Stay alert so as not to endanger power tool. Note that combustible fuel Prolonged use of the power tool may
others. vapor may escape from the fuel system. result in vibration-induced circulation
Use your power tool only for those The dusts, vapor and smoke produced problems in the hands (whitefinger
applications described in the MultiTool during operation may be dangerous to disease).
instruction manual. health. If the work area is very dusty or No general recommendation can be
smoky, wear a respirator. given for the length of usage because it
Your power tool produces
toxic exhaust fumes as Do not touch hot parts of the machine depends on several factors.
soon as the engine is since burn injury will result. The period of usage is prolonged by:
running. These fumes
Keep your hands and feet – Hand protection (wearing warm
may be colorless and
well away from the work- gloves)
odorless and contain
ing tool. To reduce the
unburned hydrocarbons – Work breaks
risk of injury, never touch
and benzol. Never run
a rotating tool. Always The period of usage is shortened by:
the engine indoors or in
stand behind the deflec-
poorly ventilated loca- – Any personal tendency to suffer
tor or to one side of the
tions, even if your model from poor circulation (symptoms:
machine during opera-
is equipped with a cata- frequently cold fingers, tingling
tion – never in front of the
lytic converter. sensations).
rotating tools.
To reduce the risk of serious or fatal – Low outside temperatures.
If your power tool is subjected to
injury from breathing toxic fumes,
unusually high loads for which it was not – The force with which the handles
ensure proper ventilation when working
designed (e.g. heavy impact or a fall), are held (a tight grip restricts
in trenches, hollows or other confined
always check that it is in good condition circulation).
locations.
before continuing work – see also
"Before Starting". Check the fuel system
6 MM 56 CEnglish
Continual and regular users should Do not turn the engine over on the
monitor closely the condition of their starter with the spark plug boot or spark Approved MultiTools
hands and fingers. If any of the above plug removed since there is otherwise a
symptoms appear (e.g. tingling risk of fire from uncontained sparking. The following STIHL MultiTools may be
sensation in fingers), seek medical mounted on the MultiEngine:
To reduce the risk of fire, do not service
advice.
or store your machine near open flames.
Maintenance and Repairs Check the fuel filler cap for leaks at
regular intervals.
Service the machine regularly. Do not Use only a spark plug of the type
attempt any maintenance or repair work approved by STIHL and make sure it is BF-MM RL-MM
not described in the instruction manual. in good condition – see "Specifications".
FC-MM FS-MM
Have all other work performed by a Inspect the ignition lead (insulation in
servicing dealer. good condition, secure connection).
STIHL recommends that you have Check the condition of the muffler.
servicing and repair work carried out
exclusively by an authorized STIHL To reduce the risk of fire and damage to
servicing dealer. STIHL dealers are hearing, do not operate your machine if
the muffler is damaged or missing. BK-MM
regularly given the opportunity to attend MF-MM
training courses and are supplied with Do not touch a hot muffler since burn
the necessary technical information. injury will result.
9911BA000 KN
Only use high-quality replacement parts
KW-MM KB-MM
in order to avoid the risk of accidents
and damage to the machine. If you have
any questions in this respect, consult a MultiTool Application
servicing dealer. BF-MM Pick tines
STIHL recommends the use of genuine BK-MM Bolo tines
STIHL replacement parts. These parts RL-MM Aerator
are specifically designed to match your
FC-MM Edger
machine model and meet your
performance requirements. FS-MM Clearing saw
MF-MM Dethatcher
To reduce the risk of injury from
unintentional engine startup, always KW-MM STIHL
shut off the engine and disconnect the PowerSweepTM
spark plug boot before performing any KB-MM Bristle brush
repairs, maintenance or cleaning work. –
Exception: Carburetor and idle speed
adjustments.
MM 56 C 7English
Gasoline with an ethanol content of
Adjusting the bicycle handle Fuel more than 10% can cause running
problems in engines with a manually
Your engine requires a mixture of adjustable carburetor and should not be
gasoline and engine oil. used in such engines.
Engines equipped with M-Tronic deliver
WARNING full power when run on gasoline with an
ethanol content of up to 25% (E25).
0000-GXX-0549-A1
1 For health reasons, avoid direct skin
contact with gasoline and avoid inhaling Engine Oil
gasoline vapor.
If you mix the fuel yourself, use only
STIHL two-stroke engine oil or another
STIHL MotoMix
N Loosen the knob (1). high-performance engine oil in
accordance with JASO FB, JASO FC,
N Swing the bicycle handle with both
STIHL recommends the use of STIHL JASO FD, ISO-L-EGB, ISO-L-EGC or
hands into the working position (as
MotoMix. This ready-to-use fuel mix ISO-L-EGD.
far as stop).
contains no benzol or lead, has a high STIHL specifies STIHL HP Ultra two-
N Tighten down the knob firmly. octane rating and ensures that you stroke engine oil or an equivalent high-
always use the right mix ratio. performance engine oil in order to
STIHL MotoMix uses STIHL HP Ultra maintain emission limits over the
two-stroke engine oil for an extra long machine’s service life.
engine life.
Mix Ratio
MotoMix is not available in all markets.
STIHL 50:1 two-stroke engine oil: 50
Mixing Fuel parts gasoline to 1 part oil
Examples
NOTICE Gasoline STIHL engine oil 50:1
Liters Liters (ml)
Unsuitable fuels or lubricants or mix
ratios other than those specified may 1 0.02 (20)
result in serious damage to the engine. 5 0.10 (100)
Poor quality gasoline or engine oil may 10 0.20 (200)
damage the engine, sealing rings, hoses 15 0.30 (300)
and the fuel tank.
20 0.40 (400)
Gasoline 25 0.50 (500)
Use only high-quality brand-name N Use a canister approved for storing
gasoline with a minimum octane rating fuel. Pour oil into canister first, then
of 90 – leaded or unleaded. add gasoline and mix thoroughly.
8 MM 56 CEnglish
Storing Fuel Filling up with fuel
Fueling
Store fuel only in approved safety-type Take care not to spill fuel while fueling
fuel canisters in a dry, cool and safe Preparations and do not overfill the tank. STIHL
location protected from light and the sun. recommends you use the STIHL filler
nozzle (special accessory).
Fuel mix ages – only mix sufficient fuel
for a few weeks work. Do not store fuel
mix for longer than 30 days. Exposure to Closing screw-type tank cap
light, the sun, low or high temperatures
can quickly make the fuel mix unusable.
STIHL MotoMix may be stored for up to
547BA045 KN
2 years without any problems.
N Thoroughly shake the mixture in the
canister before fueling your
machine.
002BA448 KN
N Before fueling, clean the filler cap
and the area around it to ensure that
WARNING no dirt falls into the tank.
Pressure may build up in the canister – N Position the machine so that the N Place the cap in the opening.
open it carefully. filler cap is facing up.
N Turn the cap clockwise as far as
N Clean the fuel tank and canister stop and tighten it down as firmly as
Opening screw-type tank cap
from time to time. possible by hand.
Dispose of remaining fuel and cleaning
fluid properly in accordance with local
regulations and environmental
requirements.
002BA447 KN
N Turn the cap counterclockwise until
it can be removed from the tank
opening.
N Remove the cap.
MM 56 C 9English
Starting the Engine Warm engine (warm start)
Starting / Stopping the
Engine
N Swing bicycle handle into working
position – see "Adjusting the Bicycle
Controls
Handle"
5
0000-GXX-0541-A0
4
0000-GXX-0540-A0
3 N Depress the choke knob (5) and
turn it to < at the same time.
Also use this setting if the engine has
been running but is still cold.
2 N Depress the manual fuel pump
bulb (4) at least five times – even if Cranking
the bulb is filled with fuel. N Retract the wheels, if fitted.
1
Cold engine (cold start)
0000-GXX-0538-A0
0000-GXX-0545-A0
0000-GXX-0539-A0
1 Throttle trigger lockout 5
2 Throttle trigger
3 Stop switch with Run and Stop N Put the unit on the ground: It must
positions. Depress the stop switch rest securely on the engine flange
(…) to switch off the ignition – see N Depress the choke knob (5) and and the support on the frame.
"Function of Stop Switch and turn it to g at the same time. Check that the MultiTool is not
Ignition System". touching the ground or any other
Function of Stop Switch and Ignition
System
The ignition is switched off and the
engine stopped when the stop switch is
depressed. The stop switch returns
automatically to the Run position when it
is released: The ignition is switched on
again after the engine stops – the engine
is then ready to start.
10 MM 56 CEnglish
obstacles – see also "Starting / Version with ErgoStart Stopping the Engine
Stopping the Engine" in the
N Pull the starter grip steadily.
MultiTool instruction manual.
N Depress the momentary contact
N Make sure you have secure footing stop switch – the engine stops –
– as shown. To reduce the risk of NOTICE
release the stop switch – it springs
injury from the rotating attachment, Do not pull out the starter rope all the back to the run position.
always stand to one side of the way – it might otherwise break.
power tool. Other Hints on Starting
N Do not let the starter grip snap back.
N With your left hand on the carrying Guide it slowly back into the housing
handle, press the unit firmly against so that the starter rope can rewind Engine stalls in cold start position g or
the ground. properly. under acceleration.
N Continue cranking until the engine N Move the choke knob to < and
NOTICE runs. continue cranking until the engine
Do not stand or kneel on the shaft. runs.
As soon as the engine runs
Engine does not start in warm start
position <
N Move the choke knob to g and
continue cranking until the engine
runs.
0000-GXX-0542-A0
If the engine does not start
N Check that all settings are correct.
N Check that there is fuel in the tank
N Press down the throttle trigger and refuel if necessary.
lockout and open the throttle – the N Check that the spark plug boot is
choke knob moves to the run properly connected.
position F. After a cold start, warm
up the engine by opening the N Repeat the starting procedure.
0000-GXX-0546-A0
throttle several times. Engine is flooded
N Move the choke knob to F and
WARNING continue cranking until the engine
Make sure the carburetor is correctly runs.
N Hold the starter grip with your right adjusted. The MultiTool must not rotate
hand. when the engine is idling.
Version without ErgoStart Your machine is now ready for
operation.
N Pull the starter grip slowly until you
feel it engage and then give it a brisk
strong pull.
MM 56 C 11English
Fuel tank run until completely dry
Extra weight
N After refueling, depress the manual
fuel pump bulb at least 5 times –
even if the bulb is already filled with An extra weight (special accessory) may
fuel. be retrofitted on the MultiEngine to
increase the weight on the MultiTool.
469BA054 KN
N Set the choke knob to suit the 43
engine temperature. Use only original STIHL weights. The 1 2 6 5
use of other weights parts may result in
N Now start the engine.
damage to the machine or personal
injury. N Push the extra weight (1) with bolt
through the bore (6) in the flange,
turning it until the square end (2)
Mounting the extra weight
engages the recess in the flange.
N Screw the inner weight (5) onto the
MultiEngine without wheels
bolt and tighten it down firmly.
Use the combination wrench to unscrew
N Screw the outer weight (4) with the
and retighten the weights.
hex head screw (3) into the thread
Unscrew weights on the side without of the inner weight and tighten it
square end – as follows: down firmly.
One of two weights may be mounted on
each side of the extra weight as
required.
Weight on each Total extra weight
side
469BA053 KN
1 2 kg
1 2 5 4 3 2 4 kg
The weights (1) on the side with the NOTICE
square end (2) remain on the bolt.
The maximum allowable extra weight is
N Take out the hex head screw (3) 4 kg. Never use a heavier extra weight
and remove the outer weight (4). as this may damage the machine.
N Loosen the inner weight (5) and MultiEngine with wheels
remove it from the bolt.
If the MultiEngine is already equipped
with wheels (special accessory), see
chapter on "Wheels", additional parts
are required to mount the extra weights.
In such a case have the extra weight
mounted by your servicing dealer.
12 MM 56 CEnglish
STIHL recommends that you have N Insert the bolt (2) with the
servicing and repair work carried out Wheels washer (3) through the hole (4) in
exclusively by an authorized STIHL the flange
servicing dealer. For convenient transport, the N Fit the washer (3) and tighten it
MultiEngine can be retrofitted with a set down with the nut (5)
of wheels (special accessory).
N Fasten the notched plate (6) to the
Always use original STIHL wheels. frame with the screws (7) in the
Using other wheels can lead to damage threaded holes – in the process,
to the machine and personal injuries. push the notched plate toward the
handle
Installing wheels N The wheels must fold down
automatically in working position; if
No additional weight is attached to the necessary, loosen the nut (5) by a
MultiEngine quarter turn
To simplify installation, turn the machine Additional weight is attached to the
so that it rests on the handles. MultiEngine
If additional weight (special accessory) –
see "Additional weight" – is already
attached to the MultiEngine, then
additional parts are required in order to
install wheels.
In this case, have the wheels installed by
2 5 a servicing dealer.
31 4 3
1 STIHL recommends that maintenance
and repair work be carried out only by
7 authorized STIHL dealers.
6
Folding the wheels in and out
7
The wheels can be locked in various
positions.
469BA035 KN
If the wheels are not needed during
work, fold in the wheels.
N Insert the two sleeves (1) in the
frame
N Push the frame onto the flange
MM 56 C 13English
Operating Instructions Replacing the Air Filter
During break-in period If There is a Noticeable Loss of Engine
Power
A factory-new machine should not be
run at high revs (full throttle off load) for
8 the first three tank fillings. This avoids 5 4 3 2
unnecessary high loads during the
break-in period. As all moving parts
have to bed in during the break-in 1
0000-GXX-0543-A0
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.
469BA036 KN
N Move the choke lever (1) toEnglish
Adjusting the Carburetor Spark Arresting Screen in Spark Plug
Muffler
N If the engine is down on power, N If the engine is down on power,
check the spark arresting screen in difficult to start or runs poorly at idle
the muffler. speed, first check the spark plug.
N Wait for the muffler to cool down. N Fit a new spark plug after about 100
operating hours – or sooner if the
0000-GXX-0544-A0
electrodes are badly eroded. Install
only suppressed spark plugs of the
type approved by STIHL – see
1 "Specifications".
The carburetor has been set at the
0000-GXX-0145-A0
factory to provide an optimum fuel-air Removing the Spark Plug
mixture under most operating
conditions.
N Shut off the engine.
Adjusting Idle Speed N Use the combination wrench to
unscrew the spark arrestor.
1
Engine stops while idling N Clean the spark arrestor screen. If
the screen is damaged or heavily
N Warm up the engine for about carbonized, fit a new one.
3 minutes.
4907BA014 KN
N Insert the spark arrestor and tighten 3
N Turn the idle speed screw (LA) it down firmly with the combination
slowly clockwise until the engine wrench.
runs smoothly – the MultiTool must
not run. The spark plug boot (2) is under the
cap (1).
MultiTool runs when the engine is idling
N Turn the idle speed screw (LA)
WARNING
counterclockwise until the MultiTool
stops moving and then turn the The cap (1) protects the spark plug boot
screw about another 1/2 to 3/4 turn from damage. Do not operate the
in the same direction. machine without a cap – replace a
damaged cap.
WARNING N Remove the cap (1).
If the MultiTool continues to run when N Pull off the spark plug boot (2).
the engine is idling, have your machine
N Allow the spark plug (3) to cool
checked and repaired by your servicing
down.
dealer.
N Unscrew the spark plug (3).
MM 56 C 15English
Checking the Spark Plug N Use resistor type spark plugs with a
properly tightened adapter nut. Engine Running Behavior
Installing the spark plug If engine running behavior is
unsatisfactory even though the air filter
N Screw the spark plug into the is clean and the carburetor is properly
cylinder. adjusted, the cause may be the muffler.
000BA039 KN
N Press the boot firmly onto the spark Have the muffler checked for
plug. contamination (carbonization) by your
A servicing dealer.
STIHL recommends that you have
N Clean dirty spark plug. servicing and repair work carried out
1 exclusively by an authorized STIHL
N Check electrode gap (A) and
readjust if necessary – see servicing dealer.
"Specifications".
4907BA016 KN
N Rectify the problems which have
caused fouling of the spark plug.
Possible causes are:
N Push the cap (1) on to the spark
– Too much oil in fuel mix. plug boot as far as stop.
– Dirty air filter.
– Unfavorable running conditions.
1
000BA045 KN
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.
16 MM 56 CEnglish
Storing the Machine
For periods of about 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.
0000-GXX-0551-A0
N Thoroughly clean the machine – pay
special attention to the cylinder fins
and air filter.
N Remove, clean and inspect the
attachment. Fold the handle down and hang up the
machine by the handle support.
N Store the machine in a dry and
secure location Keep out of the
reach of children and other
unauthorized persons.
MM 56 C 17English
Maintenance and Care
The following intervals apply to normal operating conditions only. If your daily work-
after finishing work or daily
ing time is longer or operating conditions are difficult (very dusty work area, etc.),
after each refueling stop
shorten the specified intervals accordingly.
before starting work
every 12 months
as required
if damaged
if problem
monthly
weekly
Visual inspection (condition, leaks) X X
Complete machine
Clean X
Control handle Check operation X X
Clean X X
Air filter
Replace X
Check X
Manual fuel pump (if fitted)
Have repaired by servicing dealer1) X
Check X
Pickup body (filter) in fuel tank
Have replaced by servicing dealer1) X X X
Fuel tank Clean X X
Check idle adjustment – the working/cut-
X X
Carburetor ting attachment must not run
Readjust idle X
Readjust electrode gap X
Spark plug
Replace after every 100 operating hours
Visual inspection X
Cooling inlet
Clean X
Check X X
Spark arrestor in muffler
Clean or replace X X
All accessible screws and nuts (not adjust-
Retighten X
ing screws)
Safety labels Replace X
1)
STIHL recommends an authorized STIHL servicing dealer.
18 MM 56 CEnglish
servicing dealer. STIHL dealers are
Minimize Wear and Avoid regularly given the opportunity to attend
Damage training courses and are supplied with
the necessary technical information.
Observing the instructions in this manual
helps reduce the risk of unnecessary If these maintenance operations are not
wear and damage to the power tool. carried out as specified, the user
assumes responsibility for any damage
The power tool must be operated,
that may occur. Among other parts, this
maintained and stored with the due care
includes:
and attention described in this owner's
manual. – Damage to the engine due to
neglect or deficient maintenance
The user is responsible for all damage
(e.g. air and fuel filters), incorrect
caused by non-observance of the safety
carburetor adjustment or
precautions, operating and maintenance
inadequate cleaning of cooling air
instructions in this manual. This includes
inlets (intake ports, cylinder fins).
in particular:
– Corrosion and other consequential
– Alterations or modifications to the
damage resulting from improper
product not approved by STIHL.
storage.
– Using tools or accessories which
– Damage to the machine resulting
are neither approved or suitable for
from the use of poor quality
the product or are of a poor quality.
replacement parts.
– Using the product for purposes for
which it was not designed. Parts Subject to Wear and Tear
– Using the product for sports or
competitive events. Some parts of the power tool are subject
– Consequential damage caused by to normal wear and tear even during
continuing to use the product with regular operation in accordance with
defective components. instructions and, depending on the type
and duration of use, have to be replaced
Maintenance Work in good time. Among other parts, this
includes:
All the operations described in the – Clutch
"Maintenance Chart" must be performed – Filters (air, fuel)
on a regular basis. If these maintenance
– Rewind starter
operations cannot be performed by the
owner, they should be performed by a – Spark plug
servicing dealer.
STIHL recommends that you have
servicing and repair work carried out
exclusively by an authorized STIHL
MM 56 C 19English
Main Parts
1 Choke lever
67 2 Carburetor adjusting screw
3 Spark plug boot
4 8 4 Cap
10
9 5 Air filter cover
3 6 Stop switch
2 7 Throttle trigger lockout
1 8 Control handle
5
1 9 Throttle trigger
11
10 Left handle
11 Handlebar
12 Knob
13 Loop handle
14 Carrying handle
12 15 Deflector
13 16 Gearbox
17 Axle
18 Hitch pin
19 Fuel tank
20 Tank cap
21 Manual fuel pump
14 22 Starter grip
21 23 Muffler with spark arresting screen
22 # Serial Number
15 20
16 19 23
17
0000-GXX-5899-A0
#
18
20 MM 56 CEnglish
Noise and Vibration Data Vibration level ahv,eq to EN 11789
Specifications
Handle, Handle,
For further details on compliance with left right
Engine Vibration Directive 2002/44/EC visit FC-MM 4.1 m/s2 5.1 m/s2
www.stihl.com/vib.
MultiEngine with MultiTool FS-MM
Single cylinder two-stroke engine
Version of MultiTools – see "Approved
Displacement: 27.2 cc MultiTools". Noise and vibration data is measured at
Bore: 34 mm idling and rated maximum engine speed
Stroke: 30 mm BF-MM and BK-MM in a ratio of 1:6.
Engine power to 0.85 kW Sound pressure level Lp to
ISO 8893: (1.2 bhp) at Noise and vibration data are measured DIN EN 14910
7,500 rpm at idling and rated operating speed in a
Idle speed: 2,800 rpm ratio of 1:6. 93 dB(A)
Cut-off speed: 8,900 rpm Sound pressure level Lpeq to
Sound pressure level Lpeq to EN 709
Max. output shaft DIN EN 14910
speed (MultiTool): 200 rpm 87 dB(A)
102 dB(A)
Sound power level Lw to EN 709
Ignition System Vibration level ahv,eq to DIN EN 14910
96 dB(A)
Handle, Handle,
Electronic magneto ignition Vibration level ahv,eq to EN 709 left right
Handle, Handle, FS-MM 4.0 m/s2 4.3 m/s2
Spark plug (resistor NGK CMR 6 H,
type): BOSCH USR 4AC left right
KB-KM, KW-KM
Electrode gap: 0.5 mm BF-MM: 3.8 m/s2 4.4 m/s2
BK-MM: 3.7 m/s2 4.0 m/s2
Fuel System Noise and vibration data is measured at
FC-MM idling and rated maximum engine speed
in a ratio of 1:6.
All position diaphragm carburetor with
integral fuel pump Noise and vibration data is measured at Sound pressure level Lp to ISO 11201
idling and rated maximum engine speed 94 dB(A)
Fuel tank capacity: 330 cc (0.33 l) in a ratio of 1:1.
Sound power level Lw to
Weight Sound pressure level Lp to ISO 11789 EN ISO 118061
91 dB(A) 102 dB(A)
Dry, without attachment Sound power level Lw to ISO 11789
7.9 kg
100 dB(A)
MM 56 C 21English
Vibration level ahv,eq to ISO 20643 For information on compliance with the
REACH regulation (EC) No. 1907/2006 Maintenance and Repairs
Handle, Handle, see www.stihl.com/reach.
left right
Users of this machine may only carry out
KB-MM: 4.0 m/s2 4.1 m/s2 Exhaust Emissions the maintenance and service work
KW-MM: 4.0 m/s2 4.1 m/s2 described in this user manual. All other
The CO2value measured in the EU type repairs must be carried out by a
MF-MM and RL-MM servicing dealer.
approval procedure is specified at
www.stihl.com/co2. STIHL recommends that you have
Noise and vibration data is measured at The measured CO2value was servicing and repair work carried out
idling and rated maximum engine speed determined on a representative engine exclusively by an authorized STIHL
in a ratio of 1:6. in accordance with a standardized test servicing dealer. STIHL dealers are
procedure under laboratory conditions regularly given the opportunity to attend
Sound pressure level Lpeq to EN 13684
and does not represent either an explicit training courses and are supplied with
MF-MM: 94 dB(A) or implied guarantee of the performance the necessary technical information.
RL-MM: 93 dB(A) of a specific engine. When repairing the machine, only use
Sound power level Lw to EN 13684 The applicable exhaust emission replacement parts which have been
requirements are fulfilled by the approved by STIHL for this power tool or
MF-MM: 101 dB(A) intended usage and maintenance are technically identical. Only use high-
RL-MM: 102 dB(A) described in this instruction manual. The quality replacement parts in order to
type approval expires if the engine is avoid the risk of accidents and damage
Vibration level ahv,eq to EN 13864 to the machine.
modified in any way.
Handle, Handle, STIHL recommends the use of original
left right STIHL replacement parts.
MF-MM: 4.1 m/s2 4.5 m/s2 Original STIHL parts can be identified by
RL-MM: 4.1 m/s2 4.5 m/s2 the STIHL part number, the {
logo and the STIHL parts symbol K
The K-factor in accordance with
(the symbol may appear alone on small
Directive 2006/42/EC is 2.0 dB(A) for
parts).
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 level.
REACH
REACH is an EC regulation and stands
for the Registration, Evaluation,
Authorisation and Restriction of
Chemical substances.
22 MM 56 CEnglish
Done at Waiblingen, 29.11.2018
Disposal EC Declaration of Conformity
ANDREAS STIHL AG & Co. KG
Observe all country-specific waste ANDREAS STIHL AG & Co. KG
disposal rules and regulations. Badstr. 115
D-71336 Waiblingen
Germany
declare in exclusive responsibility that
Thomas Elsner
Category: MultiEngine
Director Product Management and
Make: STIHL
000BA073 KN
Services
Model: MM 56
Serial identification: 4604
STIHL products must not be thrown in Displacement: 27.2 cc
the garbage can. Take the product, conforms to the relevant provisions of
accessories and packaging to an Directives 2011/65/EU, 2006/42/EC und
approved disposal site for environment- 2014/30/EU and has been developed
friendly recycling. and manufactured in compliance with
the following standards in the versions
Contact your STIHL servicing dealer for
valid on the date of production:
the latest information on waste disposal.
EN ISO 12100, EN 55012,
EN 61000-6-1 (in conjunction with the
specified MultiTools: BF-MM, BK-MM,
RL-MM, FC-MM, MF-MM, KB-MM,
KW-MM)
The MultiEngine described here may be
operated only in conjunction with the
MultiTools approved by STIHL for use
with this MultiEngine.
Technical documents deposited at:
ANDREAS STIHL AG & Co. KG
Produktzulassung (Product Licensing)
The year of manufacture and serial
number are applied to the product.
MM 56 C 23English 24 MM 56 C
0458-489-8321-A
AUS
G
www.stihl.com
*04584898321A*
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