STIHL KM 56 RC-E Instruction Manual

Name: STIHL KM 56 RC-E
Brand: STIHL
SKU: 2038214
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STIHL KM 56 R

Instruction Manual

Manual de instrucciones

WARNING

Read Instruction Manual thoroughly before use and follow all safety precautions – improper use can cause serious or fatal injury.

ADVERTENCIA

Antes de usar la máquina lea y siga todas las precauciones de seguridad dadas en el manual de instrucciones – el uso incorrecto puede causar lesiones graves o mortales.

Instruction Manual 1 - 34

Manual de instrucciones 35 - 71

English

Contents

Printing inks contain vegetable oils, paper can be recycled.

Printed on chlorine-free paper Original Instruction Manual

KombiSystem	2	STIHL Incorporated California
Guide to Using this Manual	2	Exhaust and Evaporative
Safety Precautions and Working		Emissions Control Warranty
Safety Precautions and Working		Statement
Techniques	3	Statement
Approved KombiTools	11	Trademarks
Mounting the Loop Handle	12
Carrying ring	14
Fuel	14
Fueling	15
Starting / Stopping the Engine	18
Operating Instructions	20
Cleaning the Air Filter	20
Engine Management	21
Adjusting the Carburetor	21
Spark Plug	22
Engine Running Behavior	23
Rewind Starter	23
Storing the Machine	23
Inspections and Maintenance by
Dealer	24
Maintenance and Care	25
Main Parts	26
Specifications	27
Maintenance and Repairs	28
Disposal	28
STIHL Incorporated Federal
Emission Control Warranty
Statement	29

Allowonlypersonswhofullyunderstand themanualsoftheKombiEngineandthe KombiTool to operate this power tool

31 combination.

33To receive maximum performance and satisfactionfromyourSTIHLpowertool, it is important that you read, understand and follow the safety precautions and the operating and maintenance instructions in chapter "Safety Precautions and Working Techniques" beforeusingyourpowertool.Forfurther information you can go to www.stihlusa.com.

Contactyour STIHLdealer or theSTIHL distributor for your area if you do not understand any of the instructions in the two manuals.

WARNING

BecausethisKombiEngineistheengine for a high-speed power tool, some special safety precautions must be observed to reduce the risk of personal injury. Careless or improper use may cause serious or even fatal injury.

KM 56 R, KM 56 RC

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KombiSystem

+	KN
	002BA530

In the STIHL KombiSystem a number of differentKombiEnginesandKombiTools can be combined to produce a power tool. In this instruction manual the functional unit formed by the KombiEngineandKombiToolisreferred 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 or embossed on the machine are explained in this manual.

Dependingonthemodelconcerned,the following pictograms may be on your machine.

Fuel tank for gasoline and engine oil mixture

Press to operate decom- pression valve

Manual fuel pump

Press to operate manual fuel pump

Filler hole for gear lubricant

Air intake summer mode

Air intake winter mode

Handle heating

Symbols in Text

Many operating and safety instructions are supported by illustrations.

The individual steps or procedures describedinthemanual may bemarked in different ways:

N A bullet marks a step or procedure.

A description of a step or procedure that refers directly to an illustration may contain item numbers that appear in the illustration. Example:

N Loosen the screw (1). N Lever (2) ...

In addition to the operating instructions, this manual may contain paragraphs that require your special attention. Such paragraphs are marked with the symbols and signal words described below:

DANGER

Indicates an imminent risk of severe or fatal injury.

WARNING

Indicates a hazardous situation which, if not avoided, could result in severe or fatal injury.

NOTICE

Indicates a risk of property damage, including damage to the machine or its individual components.

2	KM 56 R, KM 56 RC

Engineering Improvements

STIHL’s philosophy is to continually improve all of its products. As a result, engineeringchangesandimprovements are made from time to time. Therefore, some changes, modifications and improvements may not be covered in this manual. If the operating characteristics or the appearance of your machine differs from those describedinthismanual,pleasecontact your STIHL dealer or the STIHL distributor for your area for assistance.

Safety Precautions and

Working Techniques

Because this KombiEn- gine is the engine for a high-speed, power tool, special safety precau- tions must be observed to

reduce the risk of per- sonal injury.

It is important that you read, fully understand and observe the following safety precautions and warnings. Read the instruction manuals and the safety precautions of your KombiEngine and KombiTool periodically. Careless or improper use may cause serious or fatal injury.

Have your STIHL dealer show you how to operate your power tool. Observe all applicable local safety regulations, standards and ordinances.

WARNING

Do not lend or rent your power tool withouttheinstructionmanuals.Besure that anyone using it understands the information contained in these manuals.

Use your power tool only for the applications described in the instruction manual of the KombiTool you are using.

English

WARNING

Do not use it for other purposes, since misuse may result in personal injury or property damage, including damage to the machine.

WARNING

Minors should never be allowed to use this power tool. Bystanders, especially children, and animals should not be allowed in the area where it is in use.

WARNING

Toreducetheriskofinjurytobystanders and damage to property, never let your power tool run unattended. When it is not in use (e.g. during a work break), shut it off and make sure that unauthorized persons do not use it.

Most of these safety precautions and warnings apply to the use of all STIHL power tools. Different models may have different parts and controls. See the appropriate section of your KombiEngineandKombiToolinstruction manuals for a description of the controls and the function of the parts of your model.

Do not clean your machine with a pressure washer. The solid jet of water may damage parts of the machine.

Safe use of KombiEngine involves

1.the operator

2.the power tool

3.the use of the power tool.

KM 56 R, KM 56 RC

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THE OPERATOR

Physical Condition

You must be in good physical condition and mental health and not under the influence of any substance (drugs, alcohol, etc.) which might impair vision, dexterity or judgment. Do not operate this machine when you are fatigued.

WARNING

Be alert – if you get tired, take a break. Tiredness may result in loss of control. Working with any power tool can be strenuous.Ifyouhaveanyconditionthat mightbeaggravatedbystrenuouswork, check with your doctor before operating this machine.

WARNING

Prolonged use of a power tool (or other machines) exposing the operator to vibrations may produce whitefinger disease (Raynaud's phenomenon) or carpal tunnel syndrome.

These conditions reduce the hand's ability to feel and regulate temperature, produce numbness and burning sensations and may cause nerve and circulation damage and tissue necrosis.

All factors which contribute to whitefinger disease are not known, but cold weather, smoking and diseases or physical conditions that affect blood vessels and blood transport, as well as high vibration levels and long periods of

exposure to vibration are mentioned as factorsinthedevelopmentofwhitefinger disease. In order to reduce the risk of whitefinger disease and carpal tunnel syndrome, please note the following:

–Most STIHL power tools are available with an anti-vibration ("AV") system designed to reduce the transmission of vibrations created by the machine to the operator's hands. An AV system is recommended for those persons using power tools on a regular or sustained basis.

–Wear gloves – not while using KombiTool BG-KM – and keep your hands warm.

–Keep the AV system well maintained. A power tool with loose components or with damaged or worn AV elements will tend to have higher vibration levels.

–Maintain a firm grip at all times, but do not squeeze the handles with constant, excessive pressure. Take frequent breaks.

All the above-mentioned precautions do not guarantee that you will not sustain whitefinger disease or carpal tunnel syndrome. Therefore, continual and regular users should closely monitor the condition of their hands and fingers. If any of the above symptoms appear, seek medical advice immediately.

WARNING

The ignition system of the STIHL unit produces an electromagnetic field of a very low intensity. This field may interfere with some pacemakers. To reduce the risk of serious or fatal injury,

persons with a pacemaker should consult their physician and the pacemaker manufacturer before operating this tool.

Proper Clothing

WARNING

To reduce the risk of injury, the operator should wear proper protective apparel.

WARNING

Power tool noise may damage your hearing.

Wear sound barriers (ear plugs or ear mufflers) to protect your hearing.

Continual and regular users should have their hearing checked regularly.

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

For further instructions on proper clothing see the safety precautions in the instruction manual of the KombiTool you are using.

THE POWER TOOL

For illustrations and definitions of the power tool parts see the chapter on "Main Parts."

WARNING

Nevermodifythispowertoolinanyway. Only attachments supplied by STIHL and expressly approved by STIHL for

KM 56 R, KM 56 RC

use with the specific STIHL model are authorized. Although certain unauthorized attachments are useable with STIHL power tools, their use may, in fact, be extremely dangerous.

If this 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 continuingwork.Checkinparticularthat the fuel system is tight (no leaks) and that the controls and safety devices are working properly. Do not continue operating this machine if it is damaged. Incaseofdoubt,haveitcheckedbyyour STIHL servicing dealer.

THE USE OF THE POWER TOOL

Transporting the Power Tool

WARNING

Always switch off the engine and make suretheworkingtoolhasstoppedbefore putting a power tool down. When transportingyourpowertoolinavehicle, properly secure it to prevent turnover, fuel spillage and damage to the power tool.

Fuel

Your STIHL power tool uses an oilgasoline mixture for fuel (see the chapter on "Fuel" of your instruction manual).

KM 56 R, KM 56 RC

WARNING

Gasoline is an extremely flammable fuel. If spilled and ignited by a spark or other ignition source, it can cause fire and seri-

ous burn injury or property damage. Use extreme caution when handling gasoline or fuel mix. Do not smoke or bring any fire or flame near the fuel or the power tool. Note that combusti- ble fuel vapor may escape from the fuel system.

Fueling Instructions

WARNING

To reduce the risk of serious injury from burns, never attempt to refuel the unit until it has been completely removed from the operator.

WARNING

Fuel your power tool in well-ventilated areas, outdoors. Always shut off the engine and allow it to cool before refueling. Gasoline vapor pressure may build up inside the fuel tank depending on the fuel used, the weather conditions and the tank venting system.

In order to reduce the risk of burns and other personal injury from escaping gas vapor and fumes, remove the fuel filler caponyourpowertoolcarefullysoasto allow any pressure build-up in the tank to releaseslowly.Neverremove thefuel filler cap while the engine is running.

English

Selectbaregroundforfueling andmove at least 10 feet (3 m) from the fueling spot before starting the engine. Wipe off any spilled fuel before starting your machine.

WARNING

Check for fuel leakage while refueling and during operation. If fuel leakage is found, do not start or run the engine until the leak is fixed and any spilled fuel has been wiped away. Take care not to get fuel on your clothing. If this happens, change your clothing immediately.

WARNING

Inordertoreducetheriskoffuelspillage and fire from an improperly tightened fuel cap, correctly position and tighten the fuel cap in the fuel tank opening.

Different models may be equipped with different fuel caps.

Toolless cap with grip

001BA220 KN

To do this with this STIHL cap, raise the griponthetopofthecapuntilitisupright at a 90° angle. Insert the cap in the fuel

English

tank opening with the raised positioning marks on the grip of the cap and on the fuel tank opening lining up. Using the grip, press the cap down firmly while turning it clockwise as far as it will go (approx. 1/4 turn).

Fold the grip flush with the top of the cap. Grip the cap and check for tightness. If the grip does not lie completely flush

with the cap and the detent on the grip does not fit in the correspond- ing recess in the filler opening, or if the cap is loose in the filler opening, the cap is not properly seated and tightened and you must repeat the above steps.

Misaligned, damaged or broken cap

NIfthecapdoesnotdropfullyintothe openingwhenthepositioningmarks line up and/or if the cap does not tighten properly when twisted, the baseofthecapmaybeprematurely rotated (in relation to the top) to the closed position. Such misalignment can result from handling, cleaning or an improper attempt at tightening.

001BA227 KN

Left:	Base of cap in closed posi-
	tion (with open space)
Right:	Base of cap correctly posi-
	tioned for installation

001BA226 KN

NTo return the cap to the open position for installation, turn the cap (with the grip up) until it drops fully intothetankopening.Next,twistthe capcounterclockwiseasfarasitwill go (approx. 1/4 turn) – this will twist the base of the cap into the correct position. Then, twist the cap clockwise, closing it normally.

NIf your cap still does not tighten properly, it may be damaged or broken; immediately stop use of the unit and take it to your authorized STIHL dealer for repair.

Screw Cap

WARNING

Unit vibrations can cause an improperly tightened fuel filler cap to loosen or come off and spill quanti-

ties of fuel. In order to reduce the risk of fuel spillage and fire, tighten the fuel filler cap by hand as securely as possible.

See also the "Fueling" chapter in your Instruction Manual for additional information.

Before Starting

WARNING

Alwayscheckyourpowertool for proper condition and operation before starting, particularly the throttle trigger, throttle trigger lockout, stop switch, cutting attachment, deflector and harness. The throttle trigger must move freely and always spring back to the idle position. Never attempt to modify the controls or safety devices.

WARNING

Check fuel system for leaks, especially the visible parts, e.g., filler cap, hose connections,manualfuel pump(onlyfor powertoolsequippedwithamanualfuel pump). Do not start the engine if there are leaks or damage – risk of fire! Have the machine repaired by a servicing dealer before using it.

6	KM 56 R, KM 56 RC

WARNING

Never operate your power tool if it is damaged, improperly adjusted or maintained, or not completely or securely assembled.

WARNING

Check that the spark plug boot is securely mounted on the spark plug – a loose boot may cause arcing that could ignite combustible fumes and cause a fire.

Keep the handles clean and dry at all times; it is particularly important to keep themfreeofmoisture,pitch,oil,fuelmix, grease or resin in order for you to maintain a firm grip and properly control your power tool.

Starting

WARNING

Start the engine at least 10 feet (3 m) from the fueling spot, outdoors only.

Forspecificstartinginstructions,seethe appropriate section of your KombiEngine and KombiTool manuals. Place the power tool on firm ground or other solid surface in an open area. Maintain good balance and secure footing.

WARNING

To reduce the risk of injury from loss of control, be absolutely sure that the working tool is clear of you and all other obstructions and objects, including the ground,becausewhentheenginestarts

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at starting-throttle, engine speed will be fastenoughfortheclutchtoengageand move the working tool.

Once the engine has started, immediately blip the throttle trigger, whichshouldreleasethestartingthrottle and allow the engine to slow down to idle.

WARNING

Your power tool is a one-person machine. Do not allow other persons in the general work area, even when starting.

WARNING

To reduce the risk of injury from loss of control, do not attempt to "drop start " your power tool

WARNING

When you pull the starter grip, do not wrap the starter rope around your hand. Do not let the grip snap back, but guide the starter rope to rewind it properly. Failure to follow this procedure may result in injury to your hand or fingers and may damage the starter mechanism.

See also the safety precautions on Starting in the instruction manual of the KombiTool.

Important Adjustments

WARNING

To reduce the risk of personal injury from loss of control or contact with the runningworkingtool,donotuseapower tool with incorrect idle adjustment. At

English

correct idle speed, the working tool should not move. For directions on how toadjustidle speed,seetheappropriate section of your instruction manual.

If you cannot set the correct idle speed, have your STIHL dealer check your power tool and make proper adjustments and repairs.

WARNING

This unit is equipped with an ignition system that is normally in operational readiness.Afterthe settinglever isused to stop the engine, it automatically springs back to the "on" position. If the engine is warm, it may be possible to start it by simply pulling the starter rope, with no further adjustments. To reduce the risk of injury, be particularly alert to keep children away from the unit.

During Operation

Holding and Controlling the Power Tool

002BA054 KN

Always hold the unit firmly with both hands on the handles while you are working. Wrap your fingers and thumbs around the handles.

Your right hand should grip the rear handle.This also applies to left-handers.

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WARNING

To reduce the risk of injury from loss of control,neverworkonaladderoronany other insecure support.

Working Conditions

Operate and start your power tool only outdoors in a well ventilated area. Operate it under good visibility and daylight conditions only. Work carefully.

WARNING

As soon as the engine is running, this product gen- erates toxic exhaust

fumes containing chemi- cals, such as unburned hydrocarbons (including benzene) and carbon monoxide, that are known to cause respira- tory problems, cancer, birth defects, or other reproductive harm. Some of the gases (e.g. carbon monoxide) may be color- less and odorless. To reduce the risk of serious or fatal injury / illness from inhaling toxic fumes, never run the machine indoors or in poorly venti- lated locations.

WARNING

Inhalation of certain dusts, especially organic dusts such as mold or pollen, can cause susceptible persons to have an allergic or asthmatic reaction.

Substantial or repeated inhalation of dustandotherairbornecontaminants,in particular those with a smaller particle size, may cause respiratory or other illnesses. Control dust at the source where possible. Use good work practices, such as operating the unit so that the wind or operating process directsanydustraisedbythepowertool away from the operator. Follow the recommendations of EPA/OSHA/NIOSH and occupational and trade associations with respect to dust ("particulate matter"). When the inhalation of dust cannot be substantially controlled, i.e., kept at or neartheambient(background)level,the operator and any bystanders should wear a respirator approved by NIOSH/MSHA for the type of dust encountered.

Operating Instructions

WARNING

Donotoperateyourpowertoolusingthe starting throttle lock, as you do not have control of the engine speed.

In the event of an emergency, switch off theengine immediately–movetheslide control / stop switch to 0 or STOP.

WARNING

Never modify your muffler. Any modification could cause an increase in heat radiation, sparks or sound level, thereby increasing the risk of fire, burn injury or hearing loss. You may also permanently damage the engine. Have your muffler serviced and repaired by your STIHL servicing dealer only.

WARNING

Themufflerandotherpartsoftheengine (e.g. fins of the cylinder, spark plug) becomehotduringoperationandremain hot for a while after stopping the engine. Toreduceriskofburns,donottouchthe muffler and other parts while they are hot. Keep the area around the muffler clean. Remove excess lubricant and all debris such as pine needles, branches or leaves. Let the engine cool down sitting on concrete, metal, bare ground or solid wood away from any combustible substances.

WARNING

An improperly mounted or damaged cylinder housing or a damaged/deformed muffler shell may interfere with the cooling process of the muffler. To reduce the risk of fire or burn injury, do not continue work with a damaged or improperly mounted cylinder housing or a damaged/deformed muffler shell.

Your muffler is furnished with a spark arresting screen designed to reduce the risk of fire from the emission of hot particles. Never operate your unit with a missing or damaged spark arresting screen.Ifyourgas/oilmixratioiscorrect (i.e., not too rich), this screen will normally stay clean as a result of the heat from the muffler and need no service or maintenance. If you experiencelossofperformanceandyou suspect a clogged screen, have your mufflermaintained byaSTIHL servicing dealer. Some state or federal laws or regulations may require a properly maintained spark arrestor for certain

KM 56 R, KM 56 RC

uses.Seethe"Maintenance,Repairand Storing" section of these Safety Precautions. Remember that the risk of a brush or forest fire is greater in hot or dry conditions.

WARNING

Some STIHL power tools are equipped with a cata- lytic converter, which is

designed to reduce the exhaust emissions of the engine by a chemical process in the muffler. Due to this process, the muffler does not cool down as rapidly as con- ventional mufflers when the engine returns to idle or is shut off. To reduce the risk of fire and burn injuries when using a cat- alytic converter, always set your power tool down in the upright position and never locate it where the muffler is near dry brush, grass, wood chips or other combustible materi- als while it is still hot.

MAINTENANCE, REPAIR AND STORING

Maintenance, replacement, or repair of the emission control devices and systems may be performed by any nonroad engine repair establishment or individual. However, if you make a warranty claim for a component which has not been serviced or maintained

properly or if nonapproved replacement parts were used, STIHL may deny coverage.

WARNING

Use only identical STIHL replacement partsformaintenanceandrepair.Useof non-STIHL parts may cause serious or fatal injury.

Strictly follow the maintenance and repair instructions in the appropriate section of your KombiEngine and KombiTool instruction manuals. Please refer to the maintenance charts respectively the maintenance notes in these manuals.

WARNING

Always stop the engine and make sure that the working tool is stopped before doinganymaintenanceorrepairworkor cleaning the power tool. Do not attempt any maintenance or repair work not described in your KombiEngine and KombiTool instruction manuals. Have such work performed by your STIHL servicing dealer only.

WARNING

Use the specified spark plug and make sure it and the ignition lead are always clean and in good condition. Always press spark plug boot snugly onto spark plugterminal ofthepropersize.(Note:If terminal has detachable SAE adapter nut, it must be attached.) A loose connectionbetweensparkplugbootand the ignition wire connector in the boot may create arcing that could ignite combustible fumes and cause a fire.

English

WARNING

Never test the ignition system with the ignition wire boot removed from the sparkplugorwitharemovedsparkplug, since uncontained sparking may cause a fire.

WARNING

Do not operate your power tool if the mufflerisdamaged,missingormodified. An improperly maintained muffler will increasetheriskoffireandhearingloss. Your muffler is equipped with a sparkarresting screen to reduce the risk of fire; never operate your power tool if the screen is missing, damaged or clogged. Remember that the risk of a brush or forest fire is greater in hot or dry weather.

In California, it is a violation of § 4442 or § 4443 of the Public Resources Code to use or operate gasoline-powered tools on forest-covered, brush-covered or grass-covered land unless the engine’s exhaust system is equipped with a complying spark arrester that is maintained in effective working order. The owner/operator of this product is responsible for properly maintaining the spark arrester. Other states or governmentalentities/agencies,suchas the U.S. Forest Service, may have similar requirements. Contact your local fire agency or forest service for the laws or regulations relating to fire protection requirements.

Store the power tool in a dry and high or locked location out of reach of children.

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Before storing for longer than a few days, always empty the fuel tank. See chapter "Storing the machine" in this manual.

10	KM 56 R, KM 56 RC

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Approved KombiTools

FS-KM	FS-KM
FSB-KM	FH-KM	BG-KM
BF-KM	HT-KM
	HT-KM
	KB-KM	KW-KM
FCB-KM	FCS-KM
		470BA018 KN

The following STIHL KombiTools may be mounted on the KombiEngine:

KombiTool	Purpose
FS-KM	Brushcutter with
FS-KM	mowing head
FS-KM	Brushcutter with
FSB-KM	grass cutting blade
FSB-KM	Brushcutter with
HL-KM 135°	mowing head
HL-KM 135°	Hedge trimmer,
HL-KM 0°	adjustable
HL-KM 0°	Hedge trimmer
FH-KM 135°	Power scythe
BG-KM	Blower
HT-KM	Pole pruner
BF-KM	Pick tines
FCB-KM	Power edger
FCS-KM	Power edger
KB-KM	Bristle brush
KW-KM	PowerSweep

The barrier bar supplied with the machine must be mounted to the loop handle – see also "Mounting the Loop Handle".

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Mounting the Loop Handle

The loop handle comes in two different versions.

Version A

540BA003 KN

A factory-new machine comes with the loop handle already mounted.

Using the Barrier Bar

540BA004 KN

The barrier bar comes standard with the machine and must be mounted to the loop handle.

Mounting the Barrier Bar

Line up the loop handle.

		0.2 in
		(5,3 mm)
	1	2
		2
3		KN
3		540BA008
		540BA008

NFit the washer (1) on the M5x23 screw (2).

NHold the barrier bar (3) against the loop handle and insert the screw with washer.

N Tighten down the screw (2) firmly.

Leave the barrier bar permanently mounted to the loop handle.

540BA006 KN

The loop handle can be adjusted to suit theheightandreach oftheoperatorand the application by changing

distance (A).

N Loosen the screw on the handle.

NSlide the handle to the required position.

NTighten down the screw so that the handle cannot be rotated on the drive tube.

Version B

002BA586 KN

A factory-new machine comes with the loop handle already mounted.

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Using the Barrier Bar

002BA587 KN

The barrier bar comes standard with the machine and must be mounted to the loop handle.

Mounting the Barrier Bar

1	1
1	2
2	2
2
		4
	5
5	3	KN
3	3	002BA588
3

NTakeoutthescrews (1)andremove along with washers (2) and nuts (3).

NRemove the loop handle (4) and clamps (5).

002BA098 KN

NFit the square nuts (1) in the barrier bar (2); the holes must line up.

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4	2

	3
	5
6	7	KN
7	7	002BA589
		002BA589

NPlace the clamp (3) in the loop handle (4) and position them both against the drive tube (5).

NPlace the clamp (6) against the drive tube.

NPlace the barrier bar (2) in position as shown.

N Line up the holes.

NInsert the screws (7) in the holes and screw them into the barrier bar (2) as far as stop.

NGo to "Adjusting and Securing the Loop Handle".

Leave the barrier bar permanently mounted to the loop handle.

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Adjusting and Securing the Loop Handle

002BA598 KN

The loop handle can be adjusted to suit the heightand reachoftheoperatorand the application by changing

distance (A).

N Securing the Loop Handle N Line up the loop handle.

NTighten down the screws firmly – lock the nuts if necessary.

Carrying ring

547BA008 KN

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

Fuel

This engine is certified to operate on unleaded gasoline and the STIHL twostroke engine oil at a mix ratio of 50:1.

Your engine requires a mixture of highquality gasoline and two-stroke air cooled engine oil.

Usemid-gradeunleadedgasolinewitha minimum octane rating of 89 ((R+M)/2) and no more than 10% ethanol content.

Fuel with a lower octane rating may increase engine temperatures. This, in turn, increases the risk of piston seizure and damage to the engine.

The chemical composition of the fuel is also important. Some fuel additives not only detrimentally affect elastomers (carburetor diaphragms, oil seals, fuel lines,etc.),butmagnesiumcastingsand catalytic converters as well. This could cause running problems or even damage the engine. For this reason STIHL recommends that you use only high-quality unleaded gasoline!

Gasoline with an ethanol content of more than 10% can cause running problems and major damage in engines and should not be used.

The ethanol content in gasoline affects engine running speed – it may be necessary to readjust the carburetor if you use fuels with various ethanol contents.

WARNING

To reduce the risk of personal injury from loss of control and/or contact with the running cutting tool, do not use your

KM 56 R, KM 56 RC

unit with incorrect idle adjustment. At correct idle speed, the cutting tool should not move.

Ifyourpowertoolshowsanincorrectidle adjustment, have your STIHL dealer check your power tool and make proper adjustments and repairs.

The idle speed and maximum speed of the engine change if you switch from a fuel with a certain ethanol content to another fuel with a much higher or lower ethanol content.

This problem can be avoided by always using fuel with the same ethanol content.

Use only STIHL two-stroke engine oil or equivalent high-quality two-stroke engine oils that are designed for use only in air cooled two-cycle engines.

WerecommendSTIHLHPUltra2-Cycle Engine Oil since it is specially formulated for use in STIHL engines.

Do not use BIA or TCW rated (twostroke water cooled) mix oils or other mixoilsthatstatetheyareforuseinboth water cooled and air cooled engines (e.g., outboard motors, snowmobiles, chain saws, mopeds, etc.).

WARNING

Take care when handling gasoline. Avoid direct contact with the skin and avoid inhaling fuel vapor. When filling at the pump, first remove the container from your vehicle and place the containeronthegroundbeforefilling.To reduce the risk of sparks from static discharge and resulting fire and/or explosion, do not fill fuel containers that are sitting in or on a vehicle or trailer.

The container should be kept tightly closed in order to limit the amount of moisture that gets into the mixture.

The machine‘s fuel tank should be cleaned as necessary.

Fuel mix ages

Only mix sufficient fuel for a few days work, not to exceed 30 days of storage. Store in approved fuel-containers only. When mixing, pour oil into the container first, and then add gasoline. Close the container and shake it vigorously by hand to ensure proper mixing of the oil with the fuel.

Gaso-	Oil (STIHL 50:1 or equiva-
line	lent high-quality oils)
US gal.	US fl.oz.

12.6

2 1/2

6.4

512.8

Dispose of empty mixing-oil containers only at authorized disposal locations.

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Fueling

Preparations

547BA045 KN

NBefore fueling, clean the filler cap andtheareaaroundittoensurethat no dirt falls into the tank.

Always thoroughly shake the mixture in the canister before fueling your machine.

NPosition the machine so that the filler cap is facing up.

WARNING

In order to reduce the risk of fire and personalinjuryfromescaping gasvapor and fumes, remove the fuel filler cap carefully so as to allow any pressure build-up in the tank to release slowly.

One of two different filler caps is installed as standard at the factory.

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English

002BA418 KN

Toolless filler cap (with folding grip)

002BA419 KN

Threaded filler cap

Opening the toolless filler cap

001BA218 KN

NRaise the grip into an upright position.

001BA219 KN

NTurn the cap counterclockwise (approx. 1/4 turn).

001BA224 KN

N Remove fuel filler cap.

Refueling

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

Closing the toolless filler cap

NInsert the cap – positioning marks onthecapandthefueltankopening must line up.

NThe cap should drop fully into the opening in this position.

001BA221 KN

NWhilepressingthecapdown,twistit firmly clockwise as far as it will go (approx. 1/4 turn).

001BA222 KN

N Fold down the grip.

001BA220 KN

With grip in an upright position:

16	KM 56 R, KM 56 RC

Checking for proper closure

001BA223 KN

NThe lug on the grip must engage entirely in the recess (arrow), and the grip must lie completely flush with the top of the cap.

001BA225 KN

NGrip the cap and check for tightness.

NIf the cap can be moved, it is not properly installed.

Misalignment of the cap parts

NIfthecapdoesnotdropfullyintothe openingwhenthepositioningmarks line up and/or if the cap does not tighten properly when twisted, the base of the cap may be rotated out of position vis-à-vis the top.

NSuch misalignment can result from handling, cleaning or an improper attempt at tightening.

001BA227 KN

Left:	Base of improperly aligned
	cap (with open space)
Right:	Base of cap correctly posi-
	tioned for installation

001BA226 KN

NTo correct a misalignment, turn the cap (with the grip up) until it drops fully into the tank opening.

NTwist the cap counterclockwise as far as it will go (approx. 1/4 turn) – thiswilltwistthebaseofthecapinto the correct position.

NTwist the cap clockwise, closing it normally – see the sections "Closing" and "Checking for proper closure."

NIf your cap still does not tighten properly, it may be damaged or broken; immediately stop use of the unit and take it to your authorized STIHL dealer for repair.

English

Opening the threaded filler cap

002BA447 KN

NTurn the cap counterclockwise until it can be removed from the tank opening.

N Remove the filler cap.

Refueling

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

Closing the threaded filler cap

002BA448 KN

N Position cap.

NTurn the cap clockwise as far as it will go and tighten it as securely as possible by hand.

KM 56 R, KM 56 RC

English

Starting / Stopping the

Engine

Controls

3 1

2	KN
	002BA269

1 Throttle trigger lockout

2Throttle trigger

3Stop 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

4 KN547BA015

NPress the manual fuel pump

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

Cold engine (cold start)

5	KN
	547BA016

NPressinthechokelever (5)andturn it to g at the same time.

Warm engine (warm start)

547BA017 KN

NPressinthechokelever (5)andturn it to <at the same time.

Also use this setting if the engine has been running but is still cold.

Cranking

547BA018 KN

NPlacetheunitontheground: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.

NMake sure you have a safe and secure footing.

NHold 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.

18	KM 56 R, KM 56 RC

547BA020 KN

NHold the starter grip with your right hand.

Version without Easy2Start

NPull the starter grip slowly until you feelitengageandthengiveitabrisk strong pull.

Version with Easy2Start

N Pull the starter grip steadily.

NOTICE

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

NDonotletthestartergripsnapback. Guideitslowlybackintothehousing so that the starter rope can rewind properly.

N Continue cranking until engine runs.

As soon as the engine runs

547BA021 KN

NPress 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

NMovethestopswitchinthedirection 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 gor under acceleration

NMove the choke lever to <and continue cranking until the engine runs.

English

Engine does not start in warm start position <

NMove the choke lever to gand continue cranking until the engine runs.

If the engine does not start

N Check that all settings are correct.

NCheck that there is fuel in the tank and refuel if necessary.

NCheck that the spark plug boot is properly connected.

N Repeat the starting procedure. Fuel tank run until completely dry

NAfter refueling, press the manual fuel pump bulb at least five times – even if the bulb is filled with fuel.

NSet the choke lever to suit the engine temperature.

N Now start the engine.

KM 56 R, KM 56 RC

English

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 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 enginetocooldown.Emptythefueltank 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

	3
1	2
1	KN
	547BA022

N Move the choke lever (1) to <.

NTurn the screw (2) in the filter cover (3) counterclockwise until the cover is loose.

NEase the filter cover (3) over the choke lever and lift it away.

NClean away loose dirt from around the filter.

547BA023 KN

NReachintotherecess (4)inthefilter housing and take out the felt

filter (5).

NFit a new felt filter element (5). As a temporarymeasureyoucanknockit outonthepalmofyourhandorblow it out with compressed air. Do not wash.

NOTICE

Replace damaged parts.

NFit 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 <.

NFit the filter cover in position, making sure the screw is square. Tighten down the screw.

20	KM 56 R, KM 56 RC

Engine Management		Adjusting the Carburetor

Exhaust emissions are controlled by the design of the fundamental engine parameters and components (e.g. carburation, ignition, timing and valve or port timing) without the addition of any major hardware.

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

English

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.

0815BA006 KN

NWarm up the engine for about 3 minutes.

NTurn 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

NTurn 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.

KM 56 R, KM 56 RC

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