STIHL KM 56 R Multi Tool 2 Stroke Engine Instruction Manual

: October 30, 2023
: STIHL

STIHL KM 56 R Multi Tool 2 Stroke Engine

STIHL-KM-56-R-Multi-Tool-2-Stroke-Engine-product

Product Information

STIHL KombiSystem KM 56 R

The STIHL KombiSystem is a powerful tool that combines different KombiEngines and KombiTools to produce a versatile machine. The KM 56 R model is a part of this system and comes with an instruction manual in English. The power tool has been built using modern production techniques and comprehensive quality assurance to ensure customer satisfaction and trouble-free use.

Guide to Using this Manual

The instruction manual consists of pictograms, symbols, and engineering improvements that help in understanding product usage. The pictograms attached to the machine are explained in the manual, and the separate instruction manuals for the KombiEngine and KombiTool should be used together for the power tool. The warning and caution symbols in the text indicate the risk of accidents or damage to the machine or its components. STIHL’s philosophy is to continually improve its products, so some changes, modifications, and improvements may not be covered in this manual.

Safety Precautions and Working Techniques

Special safety precautions must be observed when operating the STIHL KombiSystem KM 56 R 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 injuries. Observe all applicable local safety regulations by trade organizations, social insurance institutions, labor safety authorities, etc. Children, animals, and bystanders must remain at a distance when the machine is in use. 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, and the KombiEngine and KombiTool User Manuals should always be handed over with the machine.

Product Usage Instructions

for STIHL KombiSystem KM 56 R

Read through the user manuals for KombiEngine and KombiTool attentively before using the power tool for the first time.
Combine the KombiEngine and KombiTool to form the power tool as per the instruction manual.
Observe all applicable local safety regulations, e.g. by trade organizations, social insurance institutions, labor safety authorities, etc.
Keep children, animals, and bystanders at a distance when using the machine.
Lay down the machine in a way that it does not endanger anyone when not in use.
Ensure that the machine cannot be used without authorization.
Provide or loan the machine only to people familiar with this model and its operation. Hand over the KombiEngine and KombiTool User Manuals with the machine.

Dear Customer,

Thank you for choosing a quality engineered STIHL product.
It has been built using modern production techni‐ques and comprehensive quality assurance. Every effort has been made to ensure your satis‐faction 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

KombiSystem

In the STIHL KombiSystem a number of different KombiEngines and KombiTools can be com‐bined to produce a power tool. In this instruction manual the functional unit formed by the Kom‐biEngine 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.

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 follow‐ing 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.

Safety Precautions and Working Techniques
Therefore, some changes, modifications and improvements may not be covered in this man‐ual.

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. Non-compliance 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 opera‐tion. 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 res‐ted, in good physical health and in good mental condition.
If you have any condition that might be aggrava‐ted by strenuous work, check with your doctor before operating a machine. 0458-540-8321-D
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 per‐sons 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 pur‐poses – risk of accidents!
Do not operate the KombiEngine without a prop‐erly 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 acci‐dents 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.

Transporting the machine

Always stop the engine.

By vehicle : When transporting in a vehicle, prop‐erly 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 caus‐ing 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 assem‐bled 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,
Safety Precautions and Working Techniques 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 posi‐tion 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 har‐ness: 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 fuel‐ing 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 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 – fly‐wheel 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 left-handed.

While working

In the event of impending danger or in an emer‐gency, 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 feel‐ing 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. 0458-540-8321-D
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 con‐tain unburned hydrocarbons and ben‐zene. Never run the engine indoors or in poorly ventilated locations, even if your model is equipped with a cata‐lytic converter.
To reduce the risk of serious or fatal injury from breathing toxic fumes, ensure proper ventilation when working in trenches, hollows or other con‐fined locations.
To reduce the risk of accidents, stop work imme‐diately in the event of nausea, headache, visual disturbances (e.g. reduced field of vision), prob‐lems with hearing, dizziness, deterioration in abil‐ity to concentrate. Apart from other possibilities, these symptoms may be caused by an exces‐sively 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. Com‐bustible fuel vapor may escape from the fuel sys‐tem.
Dust, fumes and smoke produced while working may be hazardous to health! Wear respiratory protection in case of heavy dust or smoke emis‐sion.
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 attach‐ment.

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 cir‐culation (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 per‐formed by a servicing dealer.
STIHL recommends that you have servicing and repair work carried out exclusively by an author‐ized 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 adjust‐ments.

Approved KombiTools

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 inter‐vals.
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 con‐dition, 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.
The following STIHL KombiTools may be attached to the KombiEngine:

KombiTool Intended use

FS‑KM Scythe with mowing head FS‑KM 1) Scythe with grass cutting blade
FSB‑KM Scythe with mowing head
HL‑KM 145° Long reach hedge trimmer, adjustable
HL‑KM 0° Long-reach hedge trimmer
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 assembly
The included barrier bar on the loop handle must be used – see also “Mounting the Loop Handle”

Mounting the Loop Handle

The new machine is delivered with the loop han‐dle 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

Take out the screws (1) and remove them along with washers (2) and nuts (3)
Remove the loop handle (4) and clamps (5)
Insert the square nuts (1) in the barrier bar (2)
the holes must line up
Insert the clamp (3) in the loop handle (4) and position them together on the shaft (5)
Position the clamp (6) against the shaft
Position the barrier bar (2) – note position!
Line up the holes
Insert the screws (7) in the holes and screw them into the barrier bar as far as they will go
Go to “Adjusting and Securing the Loop Han‐dle”
Always leave the barrier bar attached.

Orienting and Securing the Loop Handle

STIHL-KM-56-R-Multi-Tool-2
-Stroke-Engine-fig-9

By changing the distance (A), the handle can be moved into the best position for the operator and application.
Secure the loop handle
Line up the loop handle
Tighten down the screws firmly – lock the nuts if necessary

Carrying ring

The carrying ring is integrated in the front end of the control handle.

Fuel

The engine requires a mixture of gasoline and engine oil.

WARNING

Avoid direct skin contact with fuel and breathing in of gasoline fumes.

STIHL MotoMix

STIHL recommends using STIHL MotoMix. This pre-blended fuel is free of benzene and lead, is distinguished by a high octane rating, and always provides the proper mixing ratio.
STIHL MotoMix uses STIHL HP Ultra two-stroke engine oil for optimum engine life.
MotoMix is not available in all markets.

Mixing fuel

NOTICE

Unsuitable fuels or a mixing ratio that deviates from the specification can lead to severe engine damage. The engine, seals, fuel lines and fuel tank may be damaged if low-quality gasoline or engine oil is used.

Gasoline

Use only high-quality gasoline with an octane rat‐ing of at least 90 ROC – leaded or unleaded.
Gasoline with an alcohol component exceeding 10% can cause impaired engine performance in engines with manually adjustable carburetors and thus should not be used in these engines.
Engines with M-Tronic deliver full engine per‐formance using gasoline with an alcohol compo‐nent of up to 27% (E27).

Engine oil

If you mix the fuel yourself, use only STIHL two-stroke engine oil or another high-performance engine oil classified as JASO FB, JASO FC, JASO FD, ISO-L-EGB, ISO-L-EGC or ISO-L-EGD.
STIHL specifies STIHL HP Ultra two-stroke engine oil or an equivalent high-performance engine oil in order to maintain emission limits over the machine’s service life.

Mixing ratio

with STIHL two-stroke engine oil 1:50; 1:50 = 1 part oil + 50 parts gasoline

Examples

Quantity of gasoline
STIHL two-stroke engine oil 1:50

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)
Pour oil into an approved safety fuel canister first, then add gasoline and mix thoroughly

Storing fuel mixture

Store in approved safety fuel canisters only in a dry, cool and secure place protected against light and sunlight.
Fuel mixture deteriorates with age – mix only as much as needed for a few weeks. Do not store fuel mixture for longer than 30 days. The fuel mixture can become unusable more quickly if exposed to light, sunlight or low or high tempera‐tures.
STIHL MotoMix however can be stored for up to 5 years without any problems.
Shake the canister containing the fuel mixture thoroughly before refueling

WARNING

Pressure may have built up in the canister –open it carefully.
The fuel tank and the canister in which fuel mixture is stored should be cleaned thoroughly from time to time
Residual fuel and the liquid used for cleaning must be disposed of in accordance with regula‐tions and without harming the environment!

Fueling

Preparations

Before fueling, clean the filler cap and the area around it to ensure that no dirt falls into the tank.
Position the machine so that the filler cap is facing up.

Opening screw-type tank cap

Turn the cap counterclockwise until it can be removed from the tank opening.
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 (special accessory).

Closing screw-type tank cap

Place the cap in the opening.
Turn the cap clockwise as far as stop and tighten it down as firmly as possible by hand.

Starting / Stopping the Engine

Controls

Throttle trigger lockout
Throttle trigger
Stop switch with Run and 0 = Stop positions.

The 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 igni‐tion is switched off. The ignition is switched on again automatically after the engine stops.

Starting the Engine

Press the manual fuel pump bulb (4) at least five times – even if the bulb is filled with fuel.

Cold engine (cold start)

Press in the choke lever (5) and turn it to g at the same time.

Warm engine (warm start)

Press in the choke lever (5) and turn it to < at the same time.
Also use this setting if the engine has been run‐ning but is still cold.

Cranking

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 man‐ual.
Make sure you have a safe and secure foot‐ing.
Hold the unit firmly on the ground with your left hand and press down – do not touch the throt‐tle trigger or lockout lever.

NOTICE

Do not stand or kneel on the drive tube.
Hold the starter grip with your right hand.

Version without ErgoStart

Pull the starter grip slowly until you feel it engage and then give it a brisk strong pull.

Version with ErgoStart

Pull the starter grip steadily.

NOTICE

Do not pull out the starter rope all the way – it might otherwise break.
Do not let the starter grip snap back. Guide it slowly back into the housing so that the starter rope can rewind properly.
Continue cranking until engine runs.

As soon as the engine runs

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

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
Move the choke lever to < and continue cranking until the engine runs.
Engine does not start in warm start position
Move the choke lever to g and continue < cranking until the engine runs.
If the engine does not start
Check that all settings are correct.
Check that there is fuel in the tank and refuel if necessary.
Check that the spark plug boot is properly con‐nected.
Repeat the starting procedure.
Fuel tank run until completely dry
After refueling, press the manual fuel pump bulb at least five times – even if the bulb is fil‐led with fuel.
Set the choke lever to suit the engine temper‐ature.
Now start the engine.

Operating Instructions

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 dur‐ing 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 engine-mounted 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-of-service periods – see “Storing the Machine”.

Cleaning the Air Filter

If there is a noticeable loss of engine power

Move the choke lever (1) to <.
Turn the screw (2) in the filter cover (3) coun‐terclockwise until the cover is loose.
Ease the filter cover (3) over the choke lever and lift it away.
Clean away loose dirt from around the filter.
Reach into the recess (4) in the filter housing and take out the felt filter (5).
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.
Fit the felt filter (5) in the filter housing, make sure it is properly seated – the arrow points to the recess.
Move the choke lever (1) to <.
Fit the filter cover in position, making sure the screw is square. Tighten down the screw.

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 opti‐mum fuel-air mixture in all locations and operating conditions.

Adjusting Idle Speed

Engine stops while idling
Warm up the engine for about 3 minutes.
Turn the idle speed screw (LA) slowly clock‐wise until the engine runs smoothly – the cut‐ting attachment must not move.
Cutting attachment runs when engine is idling
Turn the idle speed screw (LA) counterclock‐wise 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 contin‐ues to run when the engine is idling, have your machine checked and repaired by your servicing dealer.

Spark Plug

If the engine is down on power, difficult to start or runs poorly at idle speed, first check the spark plug.
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 “Specifica‐tions”.

Removing the Spark Plug

Shut off the engine.
Remove the spark plug boot (1).
Unscrew the spark plug (2).

Checking the Spark Plug

Clean dirty spark plug.
Check electrode gap (A) and readjust if neces‐sary – see “Specifications”.
Rectify the problems which have caused foul‐ing of the spark plug.

Possible causes are:

Too much oil in fuel mix.
Dirty air filter.
Unfavorable running conditions.

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 inju‐ries or damage to property.
Use resistor type spark plugs with a properly tightened adapter nut.

Installing the Spark Plug

Screw the spark plug into the cylinder.
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 (car‐bonization) by your servicing dealer.
STIHL recommends that you have servicing and repair work carried out exclusively by an author‐ized STIHL servicing dealer.

Storing the Machine

For periods of 30 days or longer
Drain and clean the fuel tank in a well ventila‐ted area.
Dispose of fuel properly in accordance with local environmental requirements.
If a manual fuel pump is fitted: Press the man‐ual fuel pump at least 5 times.
Start the engine and run it at idling speed until it stops.
Thoroughly clean the machine – pay special attention to the air filter.
Remove, clean and check the attachment. Coat metal parts with corrosion inhibiting oil.
Store the machine in a dry and secure location Keep out of the reach of children and other unauthorized persons.
Inspections and Maintenance by Dealer

Spark arresting screen in muffler

WARNING

To reduce the risk of fire caused by hot particles escaping from the machine, never operate the machine without a spark arresting screen, or with the spark arresting screen damaged. Do not modify the muffler or spark arresting screen. To reduce the risk of fire from accumulated debris such as pine needles, branches or leaves, ensure that the muffler plugs are in place before taking up work.

NOTICE

According to the law or regulations in some countries or federal states, certain operations may only be carried out if a properly serviced spark arresting screen is provided.
If the engine is down on power, check the spark arresting screen in the muffler.
If the muffler plugs are missing or damaged, mount new plugs.
STIHL recommends that maintenance and repair work be carried out only by authorized STIHL dealers.

Maintenance and Care

The following intervals apply for normal operating conditions. The specified intervals must be shortened accordingly when working for longer than normal or under difficult cutting conditions (extensive dust, etc.).| Before starting work| At the end of work and/or daily| Whenever the tank is refilled| Weekly| Monthly| Annually| If faulty| If damaged| As required
---|---|---|---|---|---|---|---|---|---
Complete machine| Visual inspection (condition, leaks)| X| | X| | | | | |
Clean| | X| | | | | | |
Control handle| Function test| X| | X| | | | | |
Air filter| Clean| | | | | | | X| | X
replace| | | | | | | | X|
Manual fuel pump| check| X| | | | | | | |
Have repaired by a spe‐

cialist dealer1)

Main Parts

Manual fuel pump
Fuel cap
Tank
Starter grip
Muffler
Carburetor adjusting screws 7 Choke lever
Air filter cover
Spark plug boot
Machine support
Throttle trigger
Throttle trigger lockout
Stop switch
Carrying ring
Loop handle
Barrier bar
Shaft
Coupling sleeve
Wing screw
Sleeve

Serial number

Specifications

Engine
Single-cylinder two-stroke engine

Displacement: 27.2cm3
Cylinder bore: 34 mm
Piston stroke: 30 mm
Engine power to ISO 8893: 0.8 kW (1.1 hp) at 8500 1/min
Idle speed: 2800 rpm
Cut-off speed (nominal value): 10000 rpm

Ignition system

Electronic magneto ignition
Spark plug (suppressed): NGK CMR 6 H,
BOSCH USR 4AC
Electrode gap: 0.5 mm

Fuel system

All-position diaphragm carburetor with integral fuel pump
Fuel tank capacity: 340 cm3 (0.34 l) 19.4 Weight without fuel, without KombiTool KM 56 RC with ErgoStart: 4.3 kg 19.5 Sound and Vibration Levels
For further details on compliance with Vibration
Directive 2002/44/EC, see www.stihl.com/vib 19.5.1 KombiTools
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.
19.5.2 Sound pressure level Lpeq measured according to ISO 22868, ISO 11201, ISO 11789
KM 56 RC: 90 dB(A) … 96 dB(A)
19.5.3 Sound power level Lw measured according to ISO 22868, ISO 3744
KM 56 RC: 103 dB(A) … 109 dB(A) 19.5.4 Vibration level ahv, eq to ISO 20643, ISO 22867, ISO 11789
Handle, left
KM 56 RC: 4.7 m/s2 … 8.5 m/s2

Handle, right

KM 56 RC: 4.8 m/s2 … 8.2 m/s2
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/s2 for the vibration level.

REACH

REACH is an EC regulation and stands for the
Registration, Evaluation, Authorization and
Restriction of Chemical Substances.
For information on compliance with the REACH regulation (EC) No. 1907/2006 see www.stihl.com/reach 19.7 Exhaust Emissions
The CO2 value measured in the EU type-approval procedure is specified at www.stihl.com/co2 in the product-specific technical data.
The measured CO2 value was determined on a representative engine in accordance with a standardized test procedure under laboratory conditions and does not represent either an explicit or implied guarantee of the performance of a specific engine.
The applicable exhaust emission requirements are fulfilled by the intended usage and maintenance described in this User Manual. The operating license shall be void if the engine is modified in any way.

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 that have been approved by STIHL for this power tool or are technically identical.
Only use high-quality 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).

Disposal

Contact the local authorities or your STIHL servicing dealer for information on disposal.
Improper disposal can be harmful to health and pollute the environment.
Take STIHL products including packaging to a suitable collection point for recycling in accordance with local regulations.
Do not dispose of domestic waste.

EC Declaration of Conformity

ANDREAS STIHL AG & Co. KG
Badstr. 115 D-71336 Waiblingen
Germany declares 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: 27.2cm3 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.
Done at Waiblingen, 15.07.2021
ANDREAS STIHL AG & Co. KG pp
Dr. Jürgen Hoffmann
Director Product Certification & Regulatory Affairs
www.stihl.com

Documents / Resources

| STIHL KM 56 R Multi Tool 2 Stroke Engine [pdf] Instruction Manual
KM 56 R Multi Tool 2-Stroke Engine, KM 56 R, Multi Tool 2-Stroke Engine, Tool 2-Stroke Engine, Stroke Engine, Engine
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