STIHL KM 56 RC-E Instruction Manual

STIHL KM 56 R

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.

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Instruction Manual Manual de instrucciones

Instruction Manual 1 - 34

Manual de instrucciones 35 - 71

Contents

English

KombiSystem 2 Guide to Using this Manual 2 Safety Precautions and Working

Techniques 3 Approved KombiTools 11 Mounting the Loop Handle 12 Carrying ring 14 Fuel 14

Original Instruction ManualPrinted on chlorine-free paper

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

Printing inks contain vegetable oils, paper can be recycled.

Specifications 27 Maintenance and Repairs 28 Disposal 28 STIHL Incorporated Federal

Emission Control Warranty Statement 29

STIHL Incorporated California Exhaust and Evaporative Emissions Control Warranty Statement 31

Trademarks 33

Allow only persons who fully understand the manuals of the KombiEngine and the KombiTool to operate this power tool combination.

To receive maximum performance and satisfaction from your STIHL power tool, 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" before using your power tool. For further information you can go to www.stihlusa.com.

Contact your STIHL dealer or the STIHL distributor for your area if you do not understand any of the instructions in the two manuals.

WARNING

Because this KombiEngine is the engine 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.

{

0458-540-8621-C. VA2.K14.

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KM 56 R, KM 56 RC

English

. . . .

002BA530 KN

KombiSystem

In the STIHL KombiSystem a number of different KombiEngines and KombiTools can be combined to produce a power tool. In this instruction manual the functional unit formed by the KombiEngine and KombiTool is referred to as the power tool.

Therefore, the separate instruction manuals for the KombiEngine and KombiTool should be used together for the power tool.

Always read and and make sure you understand both instruction manuals before using your power tool for the first time and keep them in a safe place for future reference.

Guide to Using this Manual

Pictograms

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

Depending on the model concerned, 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

Symbols in Text

Many operating and safety instructions are supported by illustrations.

The individual steps or procedures described in the manual may be marked 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.

Handle heating

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Engineering Improvements

STIHL’s philosophy is to continually improve all of its products. As a result, engineering changes and improvements 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 described in this manual, please contact 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 without the instruction manuals. Be sure 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.

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

To reduce the risk of injury to bystanders 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 KombiEngine and KombiTool instruction 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.

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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. If you have any condition that might be aggravated by strenuous work, 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 factors in the development of whitefinger 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

Never modify this power tool in any way. Only attachments supplied by STIHL and expressly approved by STIHL for

KM 56 R, KM 56 RC

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001BA220 KN

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 continuing work. Check in particular that 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. In case of doubt, have it checked by your STIHL servicing dealer.

THE USE OF THE POWER TOOL

Transporting the Power Tool

WARNING

Always switch off the engine and make sure the working tool has stopped before putting a power tool down. When transporting your power tool in a vehicle, properly secure it to prevent turnover, fuel spillage and damage to the power tool.

Fuel Your STIHL power tool uses an oil-

gasoline mixture for fuel (see the chapter on "Fuel" of your instruction manual).

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 cap on your power tool carefully so as to allow any pressure build-up in the tank to release slowly. Never remove the fuel filler cap while the engine is running.

Select bare ground for fueling and move 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

In order to reduce the risk of fuel spillage 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

To do this with this STIHL cap, raise the grip on the top of the cap until it is upright at a 90° angle. Insert the cap in the fuel

KM 56 R, KM 56 RC

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001BA227 KN

001BA226 KN

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 N If the cap does not drop fully into the

opening when the positioning marks line up and/or if the cap does not tighten properly when twisted, the base of the cap may be prematurely rotated (in relation to the top) to the closed position. Such misalignment can result from handling, cleaning or an improper attempt at tightening.

Left: Base of cap in closed posi

tion (with open space)

Right: Base of cap correctly posi

tioned for installation

N To return the cap to the open

position for installation, turn the cap (with the grip up) until it drops fully into the tank opening. Next, twist the cap counterclockwise as far as it will 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.

N If 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

Always check your power tool 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, manual fuel pump (only for power tools equipped with a manual fuel 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.

KM 56 R, KM 56 RC

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002BA054 KN

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 them free of moisture, pitch, oil, fuel mix, 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.

For specific starting instructions, see the 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, because when the engine starts

at starting-throttle, engine speed will be fast enough for the clutch to engage and move the working tool.

Once the engine has started, immediately blip the throttle trigger, which should release the starting throttle 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 running working tool, do not use a power tool with incorrect idle adjustment. At

correct idle speed, the working tool should not move. For directions on how to adjust idle speed, see the appropriate 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. After the setting lever is used 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

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, never work on a ladder or on any 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 dust and other airborne contaminants, 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 directs any dust raised by the power tool 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

near the ambient (background) level, the operator and any bystanders should wear a respirator approved by NIOSH/MSHA for the type of dust encountered.

Operating Instructions

WARNING

Do not operate your power tool using the starting throttle lock, as you do not have

control of the engine speed. In the event of an emergency, switch off

the engine immediately – move the slide 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

The muffler and other parts of the engine (e.g. fins of the cylinder, spark plug) become hot during operation and remain hot for a while after stopping the engine. To reduce risk of burns, do not touch the 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. If your gas/oil mix ratio is correct (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 experience loss of performance and you suspect a clogged screen, have your muffler maintained by a STIHL servicing dealer. Some state or federal laws or regulations may require a properly maintained spark arrestor for certain

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uses. See the "Maintenance, Repair and 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 parts for maintenance and repair. Use of 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

doing any maintenance or repair work or 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 plug terminal of the proper size. (Note: If terminal has detachable SAE adapter nut, it must be attached.) A loose connection between spark plug boot and the ignition wire connector in the boot may create arcing that could ignite combustible fumes and cause a fire.

WARNING

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

WARNING

Do not operate your power tool if the muffler is damaged, missing or modified. An improperly maintained muffler will increase the risk of fire and hearing loss. 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 governmental entities/agencies, such as 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.

KM 56 R, KM 56 RC

Approved KombiTools

HT-KM

BF-KM

470BA018 KN

FCS-KM

FCB-KM

KW-KM

KB-KM

FH-KM

FS-KM

FSB-KM

BG-KM

English

The following STIHL KombiTools may be mounted on the KombiEngine:

KombiTool Purpose FS-KM Brushcutter with

mowing head

FS-KM Brushcutter with

grass cutting blade

FSB-KM Brushcutter with

mowing head

HL-KM 135° Hedge trimmer,

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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540BA003 KN

540BA004 KN

540BA008 KN

(5,3 mm)

0.2 in

540BA006 KN

002BA586 KN

Mounting the Loop Handle

The loop handle comes in two different versions.

Version A

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

Using the Barrier Bar

Mounting the Barrier Bar

N Fit the washer (1) on the M5x23

screw (2).

N Hold 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.

Line up the loop handle.

The loop handle can be adjusted to suit the height and reach of the operator and the application by changing distance (A).

N Loosen the screw on the handle. N Slide the handle to the required

position.

N Tighten down the screw so that the

handle cannot be rotated on the drive tube.

Version B

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

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

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Using the Barrier Bar

002BA587 KN

002BA588 KN

1 2

002BA098 KN

002BA589 KN

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

Mounting the Barrier Bar

N Take out the screws (1) and remove

along with washers (2) and nuts (3).

N Remove the loop handle (4) and

clamps (5).

N Fit the square nuts (1) in the barrier

bar (2); the holes must line up.

English

N Place the clamp (3) in the loop

handle (4) and position them both against the drive tube (5).

N Place the clamp (6) against the

drive tube.

N Place the barrier bar (2) in position

as shown.

N Line up the holes. N Insert the screws (7) in the holes

and screw them into the barrier bar (2) as far as stop.

N Go to "Adjusting and Securing the

Loop Handle".

Leave the barrier bar permanently mounted to the loop handle.

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002BA598 KN

547BA008 KN

Adjusting and Securing the Loop Handle

The loop handle can be adjusted to suit the height and reach of the operator and the application by changing distance (A).

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

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.

Use mid-grade unleaded gasoline with a 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.), but magnesium castings and 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

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547BA045 KN

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

If your power tool shows an incorrect idle 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.

We rec ommend STIH L HP Ultra 2-Cyc le 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 mix oils that state they are for use in both 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 container on the ground before filling. 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 line

Oil (STIHL 50:1 or equiva lent high-quality oils)

US gal. US fl.oz.

12.6 2 1/2 6.4 5 12.8

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

Fueling

Preparations

N Before fueling, clean the filler cap

and the area around it to ensure that no dirt falls into the tank.

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

N Position the machine so that the

filler cap is facing up.

WARNING

In order to reduce the risk of fire and personal injury from escaping gas vapor 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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002BA418 KN

002BA419 KN

001BA218 KN

001BA219 KN

001BA224 KN

001BA220 KN

001BA221 KN

001BA222 KN

N Insert the cap – positioning marks

on the cap and the fuel tank opening must line up.

N The cap should drop fully into the

opening in this position.

Toolless filler cap (with folding grip)

Threaded filler cap

Opening the toolless filler cap

N Raise the grip into an upright

position.

N Turn the cap counterclockwise

(approx. 1/4 turn).

N While pressing the cap down, twist it

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

N Remove fuel filler cap.

Refueling

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

N Fold down the grip.

Closing the toolless filler cap

With grip in an upright position:

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001BA223 KN

001BA225 KN

001BA227 KN

001BA226 KN

002BA447 KN

002BA448 KN

Checking for proper closure

N The lug on the grip must engage

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

N Grip the cap and check for

tightness.

N If the cap can be moved, it is not

properly installed.

Misalignment of the cap parts

N If the cap does not drop fully into the

opening when the positioning marks 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.

N Such misalignment can result from

handling, cleaning or an improper attempt at tightening.

Left: Base of improperly aligned

cap (with open space)

Right: Base of cap correctly posi

tioned for installation

N To correct a misalignment, turn the

cap (with the grip up) until it drops fully into the tank opening.

N Twist the cap counterclockwise as

far as it will go (approx. 1/4 turn) – this will twist the base of the cap into the correct position.

N Twist the cap clockwise, closing it

normally – see the sections "Closing" and "Checking for proper closure."

N If 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.

Opening the threaded filler cap

N Turn 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

N Position cap. N Turn 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

002BA269 KN

547BA015 KN

547BA016 KN

547BA017 KN

547BA018 KN

Starting / Stopping the Engine

Controls

1 Throttle trigger lockout 2 Throttle trigger 3 Stop switch with Run and 0 = Stop

positions.

Function of stop switch and ignition system

The stop switch is normally in the Run position, i.e. when it is not depressed: The ignition is switched on – the engine is ready to start. If the stop switch is moved to the 0 position, the ignition is switched off. The ignition is switched on again automatically after the engine stops.

Starting the Engine

N Press the manual fuel pump

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

Cold engine (cold start)

N Press in the choke lever (5) and turn

it to g at the same time.

Warm engine (warm start)

N Press in the choke lever (5) and turn

it to < at the same time.

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

Cranking

N Place the unit on the ground: Check

that the working tool is not touching the ground or any other obstacles – see also "Starting / Stopping the Engine" in the KombiTool instruction manual.

N Make sure you have a safe and

secure footing.

N Hold the unit firmly on the ground

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

NOTICE

Do not stand or kneel on the drive tube.

KM 56 R, KM 56 RC

English

547BA020 KN

547BA021 KN

N Hold the starter grip with your right

hand.

Version without Easy2Start N Pull the starter grip slowly until you

feel it engage and then give it a brisk 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.

N Do not let the starter grip snap back.

Guide it slowly back into the housing so that the starter rope can rewind properly.

N Continue cranking until engine runs.

As soon as the engine runs

N Press down the throttle trigger

lockout and open the throttle – the choke lever moves to the run position F. After a cold start, warm up the engine by opening the throttle several times.

WARNING

Make sure the carburetor is correctly adjusted. The working tool must not rotate when the engine is idling.

Your machine is now ready for operation.

Stopping the Engine

N Move the stop switch in the direction

of 0 – the engine stops – release the stop switch – it springs back to the run position.

Other Hints on Starting

Engine stalls in cold start position g or under acceleration

N Move the choke lever to < and

continue cranking until the engine runs.

Engine does not start in warm start position <

N Move the choke lever to g and

continue cranking until the engine runs.

If the engine does not start

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

and refuel if necessary.

N Check that the spark plug boot is

properly connected.

N Repeat the starting procedure. Fuel tank run until completely dry N After refueling, press the manual

fuel pump bulb at least five times – even if the bulb is filled with fuel.

N Set the choke lever to suit the

engine temperature.

N Now start the engine.

KM 56 R, KM 56 RC

English

547BA022 KN

547BA023 KN

Operating Instructions Cleaning the Air Filter

During break-in period

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

During Operation

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

After Finishing Work

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

If there is a noticeable loss of engine power

N Move the choke lever (1) to <. N Turn the screw (2) in the filter

cover (3) counterclockwise until the cover is loose.

N Ease the filter cover (3) over the

choke lever and lift it away.

N Clean away loose dirt from around

the filter.

N Reach into the recess (4) in the filter

housing and take out the felt filter (5).

N Fit a new felt filter element (5). As a

temporary measure you can knock it out on the palm of your hand or blow it out with compressed air. Do not wash.

NOTICE

Replace damaged parts. N Fit the felt filter (5) in the filter

housing, make sure it is properly seated – the arrow points to the recess.

N Move the choke lever (1) to <. N Fit the filter cover in position,

making sure the screw is square. Tighten down the screw.

KM 56 R, KM 56 RC

English

0815BA006 KN

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

N Warm up the engine for about

3 minutes.

N Turn the idle speed screw (LA)

slowly clockwise until the engine runs smoothly – the cutting attachment must not move.

Cutting attachment runs when engine is idling

N Turn the idle speed screw (LA)

counterclockwise until the cutting attachment stops running and then turn the screw about another 1/2 to 3/4 turn in the same direction.

WARNING

If the working tool or cutting attachment continues to run when the engine is idling, have your machine checked and repaired by your servicing dealer.

KM 56 R, KM 56 RC

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