{
STIHL KM 110 R
Instruction Manual
Manual de instrucciones
WARNING
Read and follow all safety precautions in Instruction Manual – improper use can cause serious or fatal injury.
ADVERTENCIA
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 - 33
Manual de instrucciones 34 - 71
English
Contents
Printing inks contain vegetable oils, paper can be recycled.
Printed on chlorine-free paper Original Instruction Manual
© ANDREAS STIHL AG & Co. KG, 2013 0458-464-8621-E. VA3.H13. 0000000455_007_GB
KombiSystem |
2 |
STIHL Incorporated California |
Guide to Using this Manual |
2 |
Exhaust and Evaporative |
Safety Precautions and Working |
|
Emissions Control Warranty |
|
Statement |
|
Techniques |
3 |
|
Approved KombiTools |
10 |
Trademarks |
Mounting the Loop Handle |
11 |
|
Adjusting the Throttle Cable |
12 |
|
4-MIX Engine |
12 |
|
Fuel |
12 |
|
Fueling |
13 |
|
Starting / Stopping the Engine |
14 |
|
Operating Instructions |
16 |
|
Cleaning the Air Filter |
16 |
|
Engine Management |
17 |
|
Adjusting the Carburetor |
17 |
|
Spark Arresting Screen in Muffler |
18 |
|
Spark Plug |
18 |
|
Replacing the Starter Rope and |
|
|
Rewind Spring |
20 |
|
Storing the Machine |
22 |
|
Maintenance and Care |
23 |
|
Main Parts |
25 |
|
Specifications |
26 |
|
Special Accessories |
27 |
|
Maintenance and Repairs |
27 |
|
Disposal |
28 |
|
STIHL Incorporated Federal |
|
|
Emission Control Warranty |
|
|
Statement |
28 |
|
Allowonlypersonswhofullyunderstand themanualsoftheKombiEngineandthe KombiTool to operate this power tool
30 combination.
32To 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.
{This instruction manual is protected by copyright. All rights reserved, especially the rights to reproduce, translate and process with electronic systems.
KM 110 R |
1 |
English
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 KombiEngine and KombiTools 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.
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 110 R |
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 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 a KombiEngine involves
1.the operator
2.the power tool
3.the use of the power tool
KM 110 R |
3 |
English
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
4
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.
Avoid loose-fitting jack- ets, scarfs, neckties,
jewelry, flared or cuffed
pants, unconfined long hair or anything that could become caught on branches, brush or the moving parts of the unit. Secure hair so it is above shoulder level.
For further instructions on proper clothing see the safety precautions in the instruction manual of the KombiTool you are using.
KM 110 R
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 or expressly approved by STIHL for use with the specific STIHL KombiEngine 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).
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.
English
In order to reduce the risk of burns and other personal injury from escaping gas vapor and fumes, remove the fuel filler cap onyour power toolcarefullysoas to allow any pressure build-up in the tank toreleaseslowly. Never remove thefuel filler cap while the engine is running.
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.
KM 110 R |
5 |
English
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 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
6
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
Never operate your power tool if it is damaged, improperly adjusted or maintained, or not completely or securely assembled.
KM 110 R
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
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 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.
KM 110 R
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 correct idle speed, the working tool should not move. For directions on how to adjustidlespeed,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.
English
During Operation
Holding and Controlling the Power Tool
002BA057 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.Thisalsoappliestoleft-handers.
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.
7
English
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
8
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 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.
KM 110 R
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.
KM 110 R
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.
Before storing for longer than a few days, always empty the fuel tank. See chapter "Storing the machine" in this manual.
9
English
Approved KombiTools
FS-KM |
FS-KM |
|
FSB-KM |
FH-KM |
BG-KM |
BF-KM |
HT-KM |
|
FBD-KM |
|
|
|
|
|
|
KB-KM |
KW-KM |
FCB-KM |
FCS-KM |
|
|
|
464BA002 KN |
The following STIHL KombiTools may be mounted on the KombiEngine:
KombiTool |
Application |
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 |
FBD-KM |
Redefining bed |
|
edges |
FCB-KM |
Lawn edging |
FCS-KM |
Lawn edging |
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".
10 |
KM 110 R |
Mounting the Loop Handle
A barrier bar is supplied with the machine. Attach the barrier bar to the loop handle.
2 |
1 |
1 |
002BA098 KN |
NInsert square nuts (1) in the barrier bar (2) – the holes must line up
2
4
|
3 |
|
|
5 |
|
6 |
7 |
KN |
|
002BA099 |
|
|
|
NInsert the clamp (3) in the loop handle (4) and position them together on the shaft (5)
N Position clamp (6)
NPosition barrier bar (2) – note position!
N Line up the holes
NInsert bolts (7) in the holes – and screw them into the barrier bar as far as possible
English |
A |
8 |
4 |
9 |
002BA353 KN |
NFit the loop handle (4) at a distance of (A) approx. 20 cm (8 in) forward of the control handle (8)
N Orient the loop handle
NTighten the bolts – lock the nuts if necessary
The sleeve (9) is present depending on the country and must be located between the loop handle and control handle.
Always leave the barrier bar attached.
KM 110 R |
11 |
English
Adjusting the Throttle Cable |
|
4-MIX Engine |
|
Fuel |
|
|
|
|
|
A properly adjusted throttle cable is the precondition for correct operation in the full throttle, starting throttle and idle positions.
NAdjust the throttle cable only when the unit is completely and properly assembled.
002BA163 KN
NUse a suitable tool to push the slide to the end of the slot (see illustration).
1
|
KN |
2 |
002BA161 |
|
NPress down the throttle trigger lockout (1) and squeeze the throttle trigger (2) (full throttle) – this sets the throttle cable correctly.
The STIHL 4-MIX engine features mixture lubrication andmustbe runona fuel mixture of gasoline and engine oil.
It operates otherwise on the 4-stroke principle.
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 with a manually adjustable carburetor and should not be used in such engines.
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.
12 |
KM 110 R |
WARNING
To reduce the risk of personal injury from loss of control and / or contact with the running cutting tool, do not use your 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 STIHL HP Ultra oil or ask your dealer for an equivalent high quality oil to ensure the maximum performance of the product for the full lifetime.
To meet the requirements of EPA 40CFR90/1054 we recommend to use STIHL HP Ultra oil.
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.).
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,nottoexceed3monthsofstorage. 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.
Gasoline |
Oil (STIHL 50:1 or equiva- |
|
|
lent high-quality oils) |
|
Liters |
Liters |
(ml) |
1 |
0.02 |
(20) |
5 |
0.10 |
(100) |
10 |
0.20 |
(200) |
20 |
0.40 |
(400) |
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.
English
Fueling
Preparations
002BA420 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.
KM 110 R |
13 |
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. STIHL recommends use of the STIHL filling system (special accessory).
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.
Starting / Stopping the
Engine
Controls
7 |
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-STOP |
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4 |
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STOP |
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3 |
5 |
START |
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6 |
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2
1
002BA181 KN
1 Throttle trigger lockout
2 Throttle trigger
3Slide control
Positions of slide control
4STOP-0– engineoff–theignitionis switched off
5F– normal run position – the engine is running or can start
6START – the ignition is switched on
– the engine can start
Symbol on slide control
7h– stop symbol and arrow. To stop the engine, push the slide control in thedirectionofthearrowonthestop symbol (h) to STOP-0.
Starting
NPressdownthetriggerlockoutlever and squeeze the throttle trigger.
N and hold them in that position.
NMove the slide control to START and hold it there.
NNow release the throttle trigger, slide control and trigger lockout in that order. This is the starting throttle position.
9
8
249BA057 KN
N Set the choke knob (8)
14 |
KM 110 R |
g if the engine is cold
efor warm start – also use this posi- tion if the engine has been running but is still cold.
NPressthefuelpumpbulb (9)atleast five times – even if the bulb is filled with fuel.
Starting
552BA014 KN
552BA015 KN
NPlace the power tool on the ground so that it rests on the machine support:Checkthattheworkingtool 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.
NHoldtheunitwithyourlefthandand press it down firmly – your thumb should be under the fan housing.
NOTICE
Do not stand or kneel on the drive tube.
552BA016 KN
NHold the starter grip with your right hand.
NPull the starter grip slowly until you feelitengageandthengiveitabrisk strong pull.
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.
NCrank the engine until it begins to fire. After no more than five attempts, turn the choke knob to e.
N Continue cranking.
As soon as the engine runs
NBlip the throttle trigger. The slide control moves to the normal run position F– and the engine settles down to idle speed.
English
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
NPush the slide control in the direction of the arrow on the stop symbol (h) to STOP-0.
At very low outside temperatures:
As soon as the engine runs:
NBlip the throttle trigger to disengage the starting throttle position. The slide control moves to the normal run position (F) – and the engine settles down to idle speed.
N Open the throttle slightly.
NWarm up the engine for a short period.
If the engine does not start
Choke knob
If you did not turn the choke knob to e quicklyenoughaftertheenginebeganto fire, the combustion chamber is flooded.
KM 110 R |
15 |
English
N Turn the choke knob to e.
NSet the slide control, lockout lever and throttle trigger to the starting throttle position.
NStart the engine by pulling the starter rope briskly – 10 to 20 pulls may be necessary.
If the engine still does not start
N Move the slide control to STOP-0.
NRemove the spark plug – see "Spark Plug".
N Dry the spark plug.
NCrankthe engineseveraltimeswith the starter to clear the combustion chamber.
NRefit the spark plug – see "Spark Plug".
N Move the slide control to START.
NSet the choke knob to e– even if the engine is cold.
N Now start the engine.
Throttle cable adjustment
NCheckadjustmentofthrottlecable– see chapter on "Adjusting the Throttle Cable".
Fuel tank run until completely dry
NAfter refueling, press the fuel pump bulb at least five times – even if the bulb is filled with fuel.
NSet the choke knob according to engine temperature.
N Start the engine.
Operating Instructions |
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Cleaning the Air Filter |
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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".
If there is a noticeable loss of engine power
4
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1 |
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2 |
KN |
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273BA006 |
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N Turn the choke knob to g
NTake out the screw (1) and remove the filter cover (2).
NClean away loose dirt from around the filter.
NGrip the filter element (3) at the cutout (arrow) in the filter housing (4) and remove it.
NFit a new filter element. As a temporarymeasureyoucanknockit outonthepalmofyourhandorblow it out with compressed air. Do not wash.
N Replace damaged parts.
Installing the filter
NInstall the filter element in the filter housing and fit the cover.
NInsert the screw and tighten it down firmly.
16 |
KM 110 R |
Engine Management |
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Adjusting the Carburetor |
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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
H L |
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KN |
LA |
249BA066 |
|
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.
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.
KM 110 R |
17 |
English
Spark Arresting Screen in
Muffler
In some countries the muffler is equipped with a spark arresting screen.
NIf the engine is down on power, check the spark arresting screen in the muffler.
N Wait for the muffler to cool down. N Move the slide control to STOP-0.
1 
249BA059 KN
N Take out the screw (1).
N Take out the screw (4).
NLift the spark arresting screen (5) and pull it out.
NClean the spark arresting screen. If the screen is damaged or heavily carbonized, fit a new one.
N Refit the spark arresting screen.
NInsert the screw and tighten it down firmly.
N Fit the shroud.
Spark Plug
If engine is down on power, difficult to start or runs poorly at idling speed, first check the spark plug.
Fit a new spark plug after approx. 100 operating hours or earlier if the electrodes are badly eroded.
Wrong fuel mix (too much engine oil in the gasoline), a dirty air filter and unfavorable running conditions (mostly at part throttle etc.) affect the condition of the spark plug. These factors cause deposits to form on the insulator nose which may result in trouble in operation.
Removing the spark plug
N Move the slide control to STOP-0.
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3 |
249BA060 KN |
2 |
2 |
NTakeoutthescrews (2)andremove the shroud (3).
1 
KN249BA063
N Pull off the spark plug boot (1). N Unscrew the spark plug.
18 |
KM 110 R |
Checking the Spark Plug
|
KN |
A |
000BA039 |
|
N Clean dirty spark plug.
NCheck electrode gap (A) and readjust if necessary – see "Specifications".
NUseonlyresistortypesparkplugsof the approved range.
Rectify problems which have caused fouling of spark plug:
–Too much oil in fuel mix.
–Dirty air filter.
–Unfavorable running conditions, e.g. operating at part load.
2
002BA363 KN
WARNING
Toreducetheriskoffireandburninjury, use only spark plugs authorized by STIHL.Alwayspresssparkplugboot(1) snuglyontosparkplugterminal(2)ofthe proper size. (Note: If terminal has detachable SAE adapter nut, it must be attached.) A loose connection between spark plug boot and ignition wire connector in the boot may create arcing that could ignite combustible fumes and cause a fire.
English
Installing the spark plug
2
3
002BA178 KN
NScrew the spark plug (3) into the cylinder and fit the boot (2) (press it down firmly).
KM 110 R |
19 |
English
Replacing the Starter Rope
and Rewind Spring
Replacing the Starter Rope
1 |
1 |
2 |
|
1 |
KN |
|
249BA061 |
NPush the slide control in direction of arrow h– to STOP-0.
N Take out the screws (1).
NRemove the starter cover (2) from the housing.
3 |
4 |
5 |
249BA013 KN |
NEase the spring clip (3) off the starter post.
NRemove the rope rotor with washer (4) and pawl (5).
NRemove the remaining rope from the rotor and starter grip.
6 |
249BA014 KN |
NTie a simple overhand knot in the new rope and then thread it through the top of the grip and the rope bushing (6).
249BA015 KN
NThread the rope through the rotor and secure it with a simple overhand knot.
NCoat the rope rotor bearing bore with non-resinous oil.
NSlip the rotor over the starter post – turn it back and forth to engage the anchor loop of the rewind spring.
20 |
KM 110 R |
3 |
4 |
5 |
249BA013 KN |
N Refit the pawl (5) in the rotor.
NFit the washer (4) on the starter post.
NUse a screwdriver or suitable pliers tofitthespringclip (3)onthestarter post and over the pawl's peg – the spring clip must point counterclockwise – as shown in the illustration.
NGo to "Tensioning the Rewind Spring".
Replacing a broken rewind spring
NRemovetheroperotorasdescribed in chapter on "Replacing the starter rope".
WARNING
The bits of spring may still be under tension and could fly apart when you take them out of the housing. To reduce the risk of injury, wear face protection and work gloves.
NRemove the spring housing and pieces of spring.
NLubricate the new spring with a few drops of non-resinous oil.
249BA018 KN |
NPosition the new spring housing, bottom plate facing up, against the cutouts (arrows).
NPush the spring housing into the starter cover.
English
NReinstall the rope rotor – then go to "Tensioning the Rewind Spring".
NIf the spring pops out of the spring housing and uncoils: Refit it counterclockwise, starting outside and working inwards.
Tensioning the rewind spring
249BA016 KN |
NMake a loop in the unwound starter ropeanduse itto turn therope rotor six full revolutions in the direction of the arrow.
NHold the rotor steady. Pull out and straighten the twisted rope.
N Let go of the rotor.
KM 110 R |
21 |
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