STIHL Chainsaw MS 250 User Manual

STIHL MS 210, 230, 250
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Instruction Manual Manual de instrucciones
Warning!
To reduce the risk of kickback injury use STIHL reduced kickback bar and STIHL PMC3, PD3 (3/8" Picco) or RMC3 (0.325“) chain depending on sprocket pitch or other available low kickback components.
Advertencia!
Para reducir el riesgo de lesionarse como resultado de un culatazo, utilice la barra de contragolpe reducido y la cadena PMC3, PD3 (Picco de 3/8 pulg) o RMC3 (0,325 pulg) de STIHL, dependiendo de la rueda dentada usada y de otros componentes reductores de contragolpe.
Read and follow all safety precautions in Instruction Manual – improper use can cause serious or fatal injury.
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 - 67
Manual de instrucciones 69 - 142
Contents
English
Guide to Using this Manual 2 Safety Precautions and Working
Techniques 3 Cutting Attachment 24 Mounting the Bar and Chain (side
chain tensioner) 24 Mounting the Bar and Chain (front
chain tensioner) 25 Mounting the Bar and Chain (quick
Original Instruction ManualPrinted on chlorine-free paper
chain tensioner) 26 Tensioning the Saw Chain (side
chain tensioner) 28 Tensioning the Saw Chain (front
chain tensioner) 28 Tensioning the Saw Chain (quick
chain tensioner) 29 Checking Chain Tension 29 Fuel 29 Fueling 30 Chain Lubricant 32 Filling Chain Oil Tank 32 Checking Chain Lubrication 33 Chain Brake 33
Printing inks contain vegetable oils, paper can be recycled.
Winter Operation 34 Starting / Stopping the Engine 35 Operating Instructions 39 Taking Care of the Guide Bar 40 Air Filter System 41 Cleaning the Air Filter 41 Engine Management 42 Adjusting the Carburetor 42 Spark Plug 44
Engine Running Behavior 45 Replacing the Starter Rope and
Rewind Spring 45 Storing the Machine 49 Checking and Replacing the Chain
Sprocket 49 Maintaining and Sharpening the
Saw Chain 50 Inspections and Maintenance by
Dealer 54 Maintenance and Care 55 Main Parts 57 Specifications 59 Special Accessories 61 Ordering Spare Parts 61 Maintenance and Repairs 62 Allocation of STIHL Incorporated
Warranty Declarations 62 STIHL Incorporated Federal
Emission Control Warranty Statement 62
STIHL Incorporated California Exhaust and Evaporative Emissions Control Warranty Statement 64
Trademarks 66
Allow only persons who fully understand this manual to operate your chain saw.
To receive maximum performance and satisfaction from your STIHL chain saw, 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 chain saw. 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 this manual.
Warning!
Because a chain saw is a high-speed wood-cutting tool, some special safety precautions must be observed as with any other power saw to reduce the risk of personal injury. Careless or improper use may cause serious or even fatal injury.
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© ANDREAS STIHL AG & Co. KG, 2011
0458-208-8621-A. M55.F11.CP.
0000001880_006_GB
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
1
English
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; fuel mixture of gasoline and engine oil
Chain oil tank; chain oil
Engaging and disengag­ing the STIHL Quickstop chain brake
Direction of chain rotation
Ematic; chain oil quantity control
Tension the chain
Intake air preheating for winter operation
Intake air for summer operation
Handle heating
Operate decompression valve
Operate manual fuel pump
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.
Caution!
Indicates a risk of property damage, including damage to the machine or its individual components.
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 for assistance.
2
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
English
Safety Precautions and Working Techniques
Because a chain saw is a high-speed, fast-cutting power tool, special safety precautions must be observed to reduce the risk of personal injury.
It is important that you read, fully understand and observe the following safety precautions and warnings. Read the instruction manual and the safety instructions periodically. Careless or improper use may cause serious or fatal injury.
Warning!
Reactive forces, including kickback, can be dangerous. Pay special attention to the section on reactive forces.
Have your STIHL dealer show you how to operate your power tool. All safety precautions that are generally observed when working with an ax or a hand saw also apply to the operation of chain saws. Observe all applicable federal, state and local safety regulations, standards and ordinances. When using a chain saw for logging purposes, for instance, refer to the OSHA regulations for "logging operations" at 29 Code of Federal Regulations 1910.266.
Warning!
Do not lend or rent your power tool with­out the instruction manual. Be sure that anyone using it understands the infor­mation contained in this manual.
Warning!
The use of this machine may be hazard­ous.The saw chain has many sharp cutters. If the cutters contact your flesh, they will cut you, even if the chain is not moving.
Use your chain saw only for cutting wooden objects.
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 chain saws. Different models may have
different parts and controls. See the appropriate section of your instruction manual for a description of the controls and the function of the parts of your model.
Safe use of a chain saw involves
1 the operator 2 the power tool 3 the use of the power tool.
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.
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
3
English
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 and keep your hands
warm. Heated handles, which are available on some STIHL powerheads, are recommended for cold weather use.
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. Keep the
saw chain sharp. A dull chain will increase cutting time, and pressing a dull chain through wood will increase the vibrations transmitted to your hands.
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.
Clothing must be sturdy and snug-fitting, but allow complete freedom of movement. Wear long pants made of heavy material to help protect your legs from contact with branches or brush. To reduce the risk of cut injuries, wear pants or chaps that contain pads of cut retardant material. Avoid loose-fitting jack­ets, 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.
Good footing is very important. Wear sturdy boots with nonslip soles. Steel-toed safety boots are recommended.
Wear an approved safety hard hat to reduce the risk of injury to your head. Chain saw noise may damage your hearing. Wear sound barriers (ear plugs or ear mufflers) to help protect your hearing. Continual and regular users should have their hearing checked regularly.
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MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
English
001BA115 KN
Be particularly alert and cautious when wearing hearing protection because your ability to hear warnings (shouts, alarms, etc.) is restricted.
Never operate your power tool unless wearing goggles or properly fitted protective glasses with adequate top and side protection complying with ANSI Z 87.1 (or your applicable national standard). To reduce the risk of injury to your face STIHL recommends that you also wear a face shield or face screen over your goggles or protective glasses.
Always wear gloves when handling the machine and the cutting tool. Heavy-duty, nonslip gloves improve your grip and help to protect your hands.
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 or expressly approved by STIHL for 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!
To reduce the risk of injury from saw chain contact, never carry or transport your power tool with the saw chain mov­ing. Always engage the chain brake when taking more than a few steps.
Warning!
Always switch off the engine, and fit the chain guard (scabbard) over the chain and guide bar before transporting the power tool over longer distances. When transporting it in a vehicle, properly secure it to prevent turnover, fuel spill­age and damage to the unit.
It may be carried only in a horizontal position. Grip the front handle in a manner that the machine is balanced
horizontally. Keep the hot muffler away from your body and the cutting attachment behind you.
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 combustible fuel vapor may escape from the fuel system.
Fueling Instructions
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.
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
5
English
001BA220 KN
001BA227 KN
001BA226 KN
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.
Different models may be equipped with different fuel caps.
Toolless cap with grip
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.
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 correspond­ing 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.
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 tank opening with the raised positioning
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MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
Screw Cap
Warning!
Unit vibrations can cause an improperly tightened fuel filler cap to loosen or come off and spill quantities of fuel. In
order to reduce the risk of fuel spillage and fire, tighten the fuel filler cap by hand as securely as possible.
The screwdriver end of the STIHL combination wrench or other similar tool can be used as an aid in tightening slotted fuel filler caps.
See also the "Fueling" chapter in your Instruction Manual for additional information.
Before Starting
Take off the chain guard (scabbard) and inspect the saw for proper condition and operation. (See the maintenance chart near the end of the instruction manual.)
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.
For proper assembly of the bar and chain follow the procedure described in the chapter "Mounting the Bar and Chain" of your instruction manual. STIHL Oilomatic chain, guide bar and sprocket must match each other in gauge and pitch. Before replacing any bar and chain, see the chapter entitled "Specifications" in the instruction manual and the section "Kickback" and the "ANSI B 175.1-2000 chain saw chain saw kickback standard" below.
English
Warning!
Proper tension of the chain is extremely important. In order to avoid improper setting, the tensioning procedure must be followed as described in your man­ual. Always make sure the hexagonal nut(s) for the sprocket cover is (are) tightened securely after tensioning the chain in order to secure the bar. Never start the saw with the sprocket cover loose. Check chain tension once more after having tightened the nut(s) and thereafter at regular intervals (whenever the saw is shut off). If the chain becomes loose while cutting, shut off the engine and then tighten. Never try to adjust the chain while the engine is running!
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!
Always check your power tool for proper condition and operation before starting, particularly the throttle trigger, throttle trigger lockout, stop switch and cutting tool. The throttle trigger must move freely and always spring back to the idle position. Never attempt to modify the controls or safety devices.
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
Warning!
To reduce the risk of fire and burn inju­ries, start the engine at least 10 feet (3 m) from the fueling spot, outdoors only.
Start and operate your saw without assistance. For specific starting instructions, see the appropriate section of the instruction manual. Proper starting methods reduce the risk of injury.
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English
001BA113 KN
001BA114 KN
Warning!
To reduce the risk of injury from chain contact and / or reactive forces, the chain brake must be engaged when starting the saw.
Warning!
Do not drop start. This method is very dangerous because you may lose con­trol of the saw.
There are two recommended methods for starting your chain saw.
With the first recommended method, the chain saw is started on the ground. Make sure the chain brake is engaged (see "Chain Brake" chapter in your instruction manual) and place the chain saw on firm ground or other solid surface in an open area. Maintain good balance and secure footing.
Grip the front handlebar of the saw firmly with your left hand and press down. For saws with a rear handle level with the ground, put the toe of your right foot into the rear handle and press down. With your right hand pull out the starter grip slowly until you feel a definite resistance and then give it a brisk, strong pull.
The second recommended method for starting your chain saw allows you to start the saw without placing it on the ground. Make sure the chain brake is engaged, grip the front handle of the chain saw firmly with your left hand. Keep your arm on the front handle in a locked (straight) position. Hold the rear handle of the saw tightly between your legs just above the knees. Maintain good balance and secure footing. Pull the starting grip slowly with your right hand until you feel a definite resistance and then give it a brisk, strong pull.
Warning!
Be sure that the guide bar and chain are clear of you and all other obstructions and objects, including the ground. When the engine is started, the engine speed with the starting throttle lock engaged will be fast enough for the clutch to engage the sprocket and, if the chain brake is not activated, turn the chain. If the upper quadrant of the tip of the bar touches any object, it may cause kick­back to occur (see section on reactive forces). To reduce this risk, always engage the chain brake before starting. Never attempt to start the chain saw when the guide bar is in a cut or kerf.
As soon as the engine is running, immediately blip the throttle trigger, which will disengage the starting throttle lock and allow the engine to settle down to idle.
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.
Important Adjustments
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. 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.
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.
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MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
Your right hand should grip the rear
001BA087 LÄ
001BA031 KN
handle. This also applies to left-handers. With your hands in this position, you can best oppose and absorb the push, pull and kickback forces of your saw without losing control (see section on reactive forces).
Warning!
To reduce the risk of serious or fatal injury to the oper­ator or bystanders
from loss of con­trol, never use the saw with one hand. It is more difficult for you to control reac­tive forces and to prevent the bar and chain from skating or bouncing along the limb or log. Even for those compact saws designed for use in confined spaces, one-handed operation is dan­gerous because the operator may lose control.
Warning!
To reduce the risk of cut injuries, keep hands and feet away from the cutting tool. Never touch a moving cutting tool with your hand or any other part of your body.
Warning!
Keep proper footing and balance at all times. Special care must be taken in slippery conditions (wet ground, snow) and in difficult, overgrown terrain. Watch for hidden obstacles such as tree stumps, roots, rocks, holes and ditches to avoid stumbling. There is increased danger of slipping on freshly debarked logs. For better footing, clear away fallen branches, scrub and cuttings. Be extremely cautious when working on slopes or uneven ground.
Warning!
Take extreme care in wet and freezing weather (rain, snow, ice). Put off the work when the weather is windy, stormy or rainfall is heavy.
English
Warning!
To reduce the risk of injury from loss of control, never work on a ladder or any other insecure support. Never hold the machine above shoulder height. Do not overreach.
Warning!
Never work in a tree unless you have received specific, professional training for such work, are properly secured (such as tackle and harness system or a lift bucket), have both hands free for operating the chain saw in a cramped environment and have taken proper pre­cautions to avoid injury from falling limbs or branches.
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
9
English
001BA082 KN
Position the chain saw in such a way that your body is clear of the cutting attachment whenever the engine is running. Stand to the left of cut while bucking.
Never put pressure on the saw when reaching the end of a cut. The pressure may cause the bar and rotating chain to pop out of the cut or kerf, go out of control and strike the operator or some other object. If the rotating chain strikes some other object, a reactive force may cause the moving chain to strike the operator.
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!
Your chain saw is a one-person machine. Do not allow other persons in the general work area, even when start­ing. Stop the engine immediately if you are approached.
Warning!
Even though bystanders should be kept away from the running saw, never work alone. Keep within calling distance of others in case help is needed.
Warning!
As soon as the engine is running, this product generates toxic exhaust fumes containing chemi­cals, such as unburned
hydrocarbons (including benzene) and carbon monoxide, that are known to cause respiratory prob­lems, cancer, birth defects, or other reproductive harm. Some of the gases (e.g. carbon monoxide) may be color­less and odorless. To reduce the risk of serious or fatal injury / illness from inhal­ing toxic fumes, never run the machine indoors or in poorly ventilated locations. If exhaust fumes become concentrated due to insufficient ventilation, clear obstructions from work area to permit proper ventilation before proceeding and / or take frequent breaks to allow fumes to dissipate before they become concentrated.
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. This includes wood dust, especially from hardwoods, but also from some softwoods such as Western Red Cedar. Control dust at the source where possible. Use good work prac­tices, such as always cutting with a properly sharpened chain (which pro­duces wood chips rather than fine dust) and 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.
10
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
Warning!
Breathing asbestos dust is dangerous and can cause severe or fatal injury, respiratory illness or cancer. The use and disposal of asbestos-containing products have been strictly regulated by OSHA and the Environmental Protec­tion Agency. If you have any reason to believe that you might be cutting asbes­tos, immediately contact your employer or a local OSHA representative.
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!
Always stop the engine before putting a chain saw down.
Warning!
The saw chain continues to move for a short period after the throttle trigger is released (flywheel effect).
Accelerating the engine while the saw chain is blocked increases the load and will cause the clutch to slip continuously. This may occur if the throttle is depressed for more than a few seconds when the chain is pinched in the cut or the chain brake is engaged. It can result in overheating and damage to important components (e.g. clutch, polymer
housing components) – which can then increase the risk of injury, e.g., from the saw chain moving while the engine is idling.
Warning!
Your chain saw is equipped with a chain catcher. It is designed to reduce the risk of personal injury in the event of a thrown or broken chain. From time to time, the catcher may be damaged or removed. To reduce the risk of personal injury, do not operate a chain saw with a damaged or missing chain catcher.
Warning!
Inspect antivibration elements periodi­cally. Replace damaged, broken or excessively worn antivibration elements immediately, since they may result in loss of control of the saw. A "spongi­ness" in the feel of the saw, increased vibration or increased "bottoming" dur­ing normal operation may indicate damage, breakage or excessive wear. Antivibration elements should always be replaced in sets. If you have any questions as to whether the antivibra­tion elements should be replaced, consult your STIHL servicing dealer.
Warning!
Your saw is not designed for prying or shoveling away limbs, roots or other objects. Such use could damage the cutting attachment or AV system.
English
Warning!
When sawing, make sure that the saw chain does not touch any foreign mate­rials such as rocks, fences, nails and the like. Such objects may be flung off, damage the saw chain or cause the saw to kickback.
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 (e.g. the trunk of a felled tree) away from any combustible substances.
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
11
English
001BA093 LÄ
001BA035 KN
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 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 cata­lytic 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 conventional mufflers when the engine returns to idle or is shut off. To reduce the risk of fire and burn inju­ries when using a catalytic 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 materials while it is still hot.
Reactive Forces including Kickback
Warning!
Reactive forces may occur any time the chain is rotating. Reactive forces can cause serious personal injury.
of control, which, in turn, may cause serious or fatal injury. An understanding of the causes of these reactive forces may help you avoid the element of surprise and loss of control. Sudden surprise contributes to accidents.
The most common reactive forces are:
kickback, pushback, pull-in. Kickback:
Kickback may occur when the moving saw chain near the upper quadrant of the bar nose contacts a solid object or is pinched.
12
The powerful force used to cut wood can be reversed and work against the operator. If the rotating chain is suddenly stopped by contact with any solid object such as a log or branch or is pinched, the reactive forces may occur instantly. These reactive forces may result in loss
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
The reaction of the cutting force of the chain causes a rotational force on the chain saw in the direction opposite to the chain movement. This may fling the bar
English
up and back in a lightning fast reaction in an uncontrolled arc mainly in the plane of the bar. Under some cutting circumstances the bar moves towards the operator, who may suffer severe or fatal injury.
Kickback may occur, for example, when the chain near the upper quadrant of the bar nose contacts the wood or is pinched during limbing or when it is incorrectly used to begin a plunge or boring cut.
The greater the force of the kickback reaction, the more difficult it becomes for the operator to control the saw. Many factors influence the occurrence and force of the kickback reaction. These include chain speed, the speed at which the bar and chain contact the object, the angle of contact, the condition of the chain and other factors.
The type of bar and saw chain you use is an important factor in the occurrence and force of the kickback reaction. Some STIHL bar and chain types are designed to reduce kickback forces. STIHL recommends the use of reduced kickback bars and low kickback chains.
ANSI B 175.1-2000 chain saw kickback standard
§ 5.11 of ANSI standard B 175.1-2000, sets certain performance and design criteria related to chain saw kickback.
To comply with § 5.11 of ANSI B 175.1-2000:
a) Saws with a displacement of less
than 3.8 cubic inches (62 cm³)
must, in their original condition,
meet a 45° computer derived kickback angle when equipped with certain cutting attachments,
and must be equipped with at least
two devices to reduce the risk of kickback injury, such as a chain brake, low kickback chain, reduced kickback bar, etc.
b) Saws with a displacement of
3.8 cubic inches (62 cm³) and above
must be equipped with at least one
device designed to reduce the risk of kickback injury, such as a chain brake, low kickback chain, reduced kickback bar, etc.
The computer derived angles for saws below 3.8 cubic inches (62 cm³) displacement are measured by applying a computer program to test results from a kickback test machine.
Warning!
The computer derived angles of § 5.11 of ANSI B 175.1-2000 may bear no rela­tionship to actual kickback bar rotation angles that may occur in real life cutting situations.
In addition, features designed to reduce kickback injuries may lose some of their effectiveness when they are no longer in their original condition, especially if they have been improperly maintained. Compliance with § 5.11 of ANSI B 175.1-2000 does not automatically mean that in a real life kickback the bar and chain will rotate at most 45°.
Warning!
In order for powerheads below 3.8 cubic inches (62 cm³) displacement to comply with the computed kickback angle requirements of § 5.11 of ANSI B 175.1-2000 use only the following cut­ting attachments:
bar and chain combinations listed
as complying in the "Specifications" section of the instruction manual or
other replacement bar and chain
combinations marked in accordance with the standard for use on the powerhead or
replacement chain designated "low
kickback saw chain."
See the section on "Low kickback saw chain and reduced kickback bars."
Devices for Reducing the Risk of Kickback Injury
STIHL recommends the use of the STIHL Quickstop chain brake on your powerhead with green labeled reduced kickback bars and low kickback chains.
Warning!
To reduce the risk of injury, never use a saw if the chain brake does not function properly. Take the saw to your local STIHL servicing dealer. Do not use the saw until the problem has been rectified.
STIHL Quickstop Chain Brake
STIHL has developed a chain stopping system designed to reduce the risk of injury in certain kickback situations. It is called a Quickstop chain brake.
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
13
English
001BA174 KN
All STIHL chain saws are equipped with a Quickstop chain brake which can be activated by inertia. If the forces of an occurring kickback are sufficiently high, the hand guard is accelerated towards the bar nose even without hand contact. See the chapter entitled "Chain Brake" of your instruction manual.
Warning!
Never operate your chain saw without a front hand guard. In a kickback situation this guard helps protect your left hand and other parts of your body. In addition, removal of the hand guard on a saw equipped with a Quickstop chain brake will deactivate the chain brake.
Warning!
No Quickstop or other chain brake device prevents kickback. These devices are designed to reduce the risk of kickback injury, if activated, in certain kickback situations. In order for the Quickstop to reduce the risk of kickback injury, it must be properly maintained and in good working order. See the chapter of your instruction manual enti­tled "Chain Brake" and the section "Maintenance, Repair and Storing" at the end of these Safety Precautions. In addition, there must be enough distance between the bar and the operator to ensure that the Quickstop has sufficient time to activate and stop the chain before potential contact with the operator.
Warning!
An improperly maintained chain brake may increase the time needed to stop the chain after activation, or may not activate at all.
Warning!
Never run the chain saw above idle speed for more than 3 seconds when the chain brake is engaged or when the chain is pinched or otherwise caught in the cut. Clutch slippage can cause excessive heat, leading to severe dam­age of the motor housing, clutch and oiler component and may interfere with the operation of the chain brake. If clutch slippage in excess of 3 seconds has occurred, allow the motor housing to cool before proceeding and check the operation of your chain brake as described in the chapter entitled "Chain Brake" of your instruction manual. Also make sure that the chain is not turning at idle speed (see above at "Important Adjustments").
Low Kickback Saw Chain and Reduced Kickback Bars
STIHL offers a variety of bars and chains. STIHL reduced kickback bars and low kickback chains are designed to reduce the risk of kickback injury. Other chains are designed to obtain higher cutting efficiency or sharpening ease but may result in higher kickback tendency.
STIHL has developed a color code system to help you identify the STIHL reduced kickback bars and low kickback chains. Cutting attachments with green warning decals or green labels on the packaging are designed to reduce the risk of kickback injury. The matching of green decaled powerheads under
3.8 cubic inches (62 cm³) displacement with green labeled bars and green labeled chains gives compliance with the computed kickback angle requirements of ANSI B 175.1-2000
14
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
when the products are in their original condition. Products with yellow decals or labels are for users with extraordinary cutting needs and experience and specialized training for dealing with kickback.
STIHL recommends the use of its green labeled reduced kickback bars, green labeled low kickback chains and a STIHL Quickstop chain brake for both experienced and inexperienced chain saw users.
Please ask your STIHL dealer to properly match your powerhead with the appropriate bar / chain combination to reduce the risk of kickback injury. Green labeled bars and chains are recommended for all powerheads.
Warning!
Use of other, non-listed bar / chain com­binations may increase kickback forces and the risk of kickback injury. New bar / chain combinations may be developed after publication of this literature, which will, in combination with certain power­heads, comply with § 5.11 of ANSI B 175.1-2000. Check with your STIHL dealer for such combinations.
Warning!
Reduced kickback bars and low kick­back chains do not prevent kickback, but they are designed to reduce the risk of kickback injury. They are available from your STIHL dealer.
Warning!
Even if your saw is equipped with a Quickstop, a reduced kickback bar and / or low kickback chain, this does not eliminate the risk of injury by kickback. Therefore, always observe all safety precautions to avoid kickback situations.
Low Kickback Chain
Some types of saw chain have specially designed components to reduce the force of nose contact kickback. STIHL has developed low kickback chain for your powerhead.
"Low kickback saw chain" is a chain which has met the kickback performance requirements of § 5.11.2.4 of ANSI B 175.1-2000 (Gasoline­Powered Chain Saws–Safety Requirements) when tested in its original condition on a selected representative sample of chain saws below 3.8 cubic inches (62 cm³) displacement specified in ANSI B 175.1-2000.
Warning!
There are potential powerhead and bar combinations with which low kickback saw chains can be used which have not been specifically certified to comply with the 45° computer derived kickback angle of § 5.11 of ANSI B 175.1-2000. Some low kickback chains have not been tested with all powerhead and bar combinations.
English
Warning!
A dull or improperly sharpened chain may reduce or negate the effects of the design features intended to reduce kick­back energy. Improper lowering or sharpening of the depth gauges or shaping of the cutters may increase the chance and the potential energy of a kickback. Always cut with a properly sharpened chain.
Reduced Kickback Bars
STIHL green labeled reduced kickback bars are designed to reduce the risk of kickback injury when used with STIHL green labeled low kickback chains.
Warning!
When used with other, more aggressive chains, these bars may be less effective in reducing kickback.
Warning!
For a properly balanced saw and in order to comply with § 5.12.1 of ANSI B 175.1-2000, use only bar lengths listed in the specifications chapter of the instruction manual for your chain saw powerhead.
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
15
English
001BA037 KN
A
001BA038 KN
B
Bow Guides
Warning!
Do not mount a bow guide on any STIHL chain saw. Any chain saw equipped with a bow guide is potentially very dangerous. The risk of kickback is increased with a bow guide because of the increased kickback contact area. Low kickback chain will not significantly reduce the risk of kickback injury when used on a bow guide.
To avoid Kickback
The best protection from personal injury that may result from kickback is to avoid kickback situations:
1. Hold the chain saw firmly with both
hands and maintain a secure grip. Don’t let go.
2. Be aware of the location of the guide
bar nose at all times.
3. Never let the nose of the guide bar
contact any object. Do not cut limbs with the nose of the guide bar. Be especially careful near wire fences and when cutting small, tough limbs, small size brush and saplings which may easily catch the chain.
4. Don't overreach.
5. Don't cut above shoulder height.
6. Begin cutting and continue at full
throttle.
7. Cut only one log at a time.
8. Use extreme caution when
reentering a previous cut.
9. Do not attempt to plunge cut if you
are not experienced with these cutting techniques.
10. Be alert for shifting of the log or
other forces that may cause the cut to close and pinch the chain.
11. Maintain saw chain properly. Cut
with a correctly sharpened, properly tensioned chain at all times.
12. Stand to the side of the cutting path
of the chain saw.
A = Pull-in
Pull-in occurs when the chain on the bottom of the bar is suddenly stopped when it is pinched, caught or encounters a foreign object in the wood. The reaction of the chain pulls the saw forward and may cause the operator to lose control.
Pull-in frequently occurs when the bumper spike of the saw is not held securely against the tree or limb and when the chain is not rotating at full speed before it contacts the wood.
Warning!
Use extreme caution when cutting small size brush and saplings which may eas­ily catch the chain, be whipped towards you or pull you off balance.
To avoid Pull-in
1. Always start a cut with the chain
rotating at full speed and the bumper spike in contact with the wood.
2. The risk of pull-in may also be
reduced by using wedges to open the kerf or cut.
B = Pushback
Pushback occurs when the chain on the top of the bar is suddenly stopped when it is pinched, caught or encounters a foreign object in the wood. The reaction of the chain may drive the saw rapidly straight back toward the operator and may cause loss of saw control. Pushback frequently occurs when the top of the bar is used for cutting.
To avoid Pushback
1. Be alert to forces or situations that
may cause material to pinch the top of the chain.
2. Do not cut more than one log at a
time.
3. Do not twist the saw when
withdrawing the bar from a plunge cut or underbuck cut because the chain can pinch.
16
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
English
001BA088 LÄ
2
/
1
2
1 1
/
1
2
B
001BA040 KN
A
45°
45°
B
Cutting Techniques Felling
Felling is cutting down a tree. Before felling a tree, consider carefully
all conditions which may affect the direction of fall.
Warning!
There are a number of factors that may affect and change the intended direction of fall, e.g. wind direction and speed, lean of tree, surrounding trees and obstacles, sloping ground, one-sided limb structure, wood structure, decay, snow load, etc. To reduce the risk of severe or fatal injury to yourself or oth­ers, look for these conditions prior to beginning the cut, and be alert for a change in direction while the tree is falling.
Warning!
Always observe the general condition of the tree. Inexperienced users should never attempt to cut trees that are decayed or rotted inside or that are leaning or otherwise under tension. There is an increased risk that such trees could snap or split while being cut and cause serious or fatal injury to the operator or bystanders. Also look for broken or dead branches which could vibrate loose and fall on the operator. When felling on a slope, the operator should stand on the uphill side if possible.
Felling Instructions
When felling, maintain a distance of at least 2 1/2 tree lengths from the nearest person.
When felling in the vicinity of roads, railways and power lines, etc., take extra precautions. Inform the police, utility company or railway authority before beginning to cut.
Warning!
The noise of your engine may drown any warning call.
Escape Path
First clear the tree base and work area from interfering limbs and brush and clean its lower portion with an ax.
Then, establish two paths of escape (B) and remove all obstacles. These paths should be generally opposite to the planned direction of the fall of the tree (A) and about at a 45° angle. Place all tools and equipment a safe distance away from the tree, but not on the escape paths.
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
17
English
001BA146 KN
001BA153 KN
001BA143 KN
C
C
Buttress Roots
If the tree has large buttress roots, cut into the largest buttress vertically first (horizontally next) and remove the resulting piece.
Gunning Sight
When making the felling notch, use the gunning sight on the shroud and housing to check the desired direction of fall:
Position the saw so that the gunning sight points exactly in the direction you want the tree to fall.
Conventional Cut
Felling notch (C) – determines the direction of the fall
For a conventional cut: N Properly place felling notch
perpendicular to the line of fall, close to the ground.
N Cut down at approx. 45° angle to a
depth of about 1/5 to 1/4 of the trunk diameter.
N Make second cut horizontal. N Remove resulting 45° piece.
Open-face Technique
Felling notch (C) – determines the direction of the fall
For an open-face cut: N Properly place felling notch
perpendicular to the line of fall, close to the ground.
N Cut down at approx. 50° angle to a
depth of approx.1/5 to 1/4 of the trunk diameter.
N Make second cut from below at
approx. 40 degree angle.
N Remove resulting 90° piece.
18
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
English
001BA150 KN
001BA144 KN
D
D
001BA145 KN
E
E
Making Sapwood Cuts
N For medium sized or larger trees
make cuts at both sides of the trunk, at same height as subsequent felling cut.
N Cut to no more than width of guide
bar.
This is especially important in softwood in summer – it helps prevent sapwood splintering when the tree falls.
D =Felling Cut
Conventional and open-face technique: N Begin 1 to 2 inches (2,5 to 5 cm)
higher than center of felling notch.
N Cut horizontally towards the felling
notch.
N Leave approx.1/10 of diameter
uncut. This is the hinge.
N Do not cut through the hinge – you
could lose control of the direction of the fall.
Drive wedges into the felling cut where necessary to control the fall.
E = Hinge
N Helps control the falling tree. N Do not cut through the hinge – you
could lose control of the direction of the fall.
Warning!
If the tip of the bar contacts a wedge, it may cause kickback. Wedges should be of wood or plastic – never steel, which can damage the chain.
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
19
English
001BA147 KN
001BA148 KN
1
4
2
Felling Cut for Small Diameter Trees: Simple Fan Cut
Engage the bumper spikes of the chain saw directly behind the location of the intended hinge and pivot the saw around this point only as far as the hinge. The bumper spike rolls against the trunk.
Felling Cut for Large Diameter Trees
Warning!
Felling a tree that has a diameter greater than the length of the guide bar requires use of either the sectioning fell­ing cut or plunge-cut method. These methods are extremely dangerous because they involve the use of the nose of the guide bar and can result in kickback. Only properly trained profes­sionals should attempt these techniques.
Sectioning Method
For the sectioning method make the first part of the felling cut with the guide bar fanning in toward the hinge. Then, using the bumper spike as a pivot, reposition the saw for the next cut.
Avoid repositioning the saw more than necessary. When repositioning for the next cut, keep the guide bar fully engaged in the kerf to keep the felling cut straight. If the saw begins to pinch, insert a wedge to open the cut. On the last cut, do not cut the hinge.
Plunge-cut Method
Timber having a diameter more than twice the length of the guide bar requires the use of the plunge-cut method before making the felling cut.
First, cut a large, wide felling notch. Make a plunge cut in the center of the notch.
20
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
English
001BA033 KN
The plunge cut is made with the guide bar nose. Begin the plunge cut by applying the lower portion of the guide bar nose to the tree at an angle. Cut until the depth of the kerf is about the same as the width of the guide bar. Next, align the saw in the direction in which the recess is to be cut.
With the saw at full throttle, insert the guide bar in the trunk.
Enlarge the plunge cut as shown in the illustration.
Warning!
There is an extreme danger of kick­back at this point. Extra caution must be taken to maintain control of the saw. To make the felling cut, follow the sectioning method described previously.
If you are inexperienced with a chain saw, plunge-cutting should not be attempted. Seek the help of a professional.
Warning!
In order to reduce the risk of personal injury, never stand directly behind the tree when it is about to fall, since part of the trunk may split and come back towards the operator (barber-chairing), or the tree may jump backwards off the stump. Always keep to the side of the falling tree. When the tree starts to fall, withdraw the bar, shut off the engine and walk away on the preplanned escape path. Watch out for falling limbs.
Warning!
Be extremely careful with partially fallen trees which are poorly supported. When the tree hangs or for some other reason does not fall completely, set the saw aside and pull the tree down with a cable winch, block and tackle or tractor. If you try to cut it down with your saw, you may be injured.
Limbing
Limbing is removing the branches from a fallen tree.
Warning!
There is an extreme danger of kickback during the limbing operation. Do not work with the nose of the bar. Be extremely cautious and avoid contact­ing the log or other limbs with the nose of the guide bar.
Do not stand on a log while limbing it – you may slip or the log may roll.
Start limbing by leaving the lower limbs to support the log off the ground. When underbucking freely hanging limbs, a pinch may result or the limb may fall, causing loss of control. If a pinch occurs, stop the engine and remove the saw by lifting the limb.
Warning!
Be extremely cautious when cutting limbs or logs under tension (spring poles). The limbs or logs could spring back toward the operator and cause loss of control of the saw and severe or fatal injury to the operator.
Bucking
Bucking is cutting a log into sections.
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
21
English
001BA051 LÄ
1
001BA151 KN
2
1
001BA152 KN
2
Warning!
When bucking, do not stand on the log. Make sure the log will not roll downhill. If on a slope, stand on the uphill side of the log. Watch out for rolling logs.
Cut only one log at a time. Shattered wood should be cut very
carefully. Sharp slivers of wood may be caught and flung in the direction of the operator of the saw.
When cutting small logs, place log through "V"-shaped supports on top of a sawhorse. Never permit another person to hold the log. Never hold the log with your leg or foot.
Logs under strain: Risk of pinching! Always start relieving
cut (1) at compression side.Then make bucking cut (2) at tension side. If the saw pinches, stop the engine and remove it from the log.
Only properly trained professionals should work in an area where the logs, limbs and roots are tangled. Working in "blow down" areas is extremely hazardous. Drag the logs into a clear area before cutting. Pull out exposed and cleared logs first.
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 instruction manual. Please refer to the maintenance chart in this manual.
Warning!
Always stop the engine and make sure that the cutting tool is stopped before doing any maintenance or repair work or cleaning the power tool.
Warning!
Do not attempt any maintenance or repair work not described in your instruction manual. Have such work per­formed by your STIHL servicing dealer only. For example, if improper tools are used to remove the flywheel or if an improper tool is used to hold the fly­wheel in order to remove the clutch, structural damage to the flywheel could occur and could subsequently cause the flywheel to burst.
Wear gloves when handling or performing maintenance on saw chains.
22
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
English
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 securely attached.) A loose connection between spark plug terminal 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 spark plug boot removed from the spark plug or with a removed spark plug, since uncontained sparking may cause a fire.
Warning!
Do not operate your chain saw if the muffler is damaged, missing or modi­fied. An improperly maintained muffler will increase the risk of fire and hearing loss.
If your muffler was equipped with a spark-arresting screen to reduce the risk of fire, never operate your saw if the screen is missing or damaged. Remember that the risk of forest fires is greater in hot or dry weather.
Keep the chain, bar and sprocket clean; replace worn sprockets or chains. Keep the chain sharp. You can spot a dull chain when easy-to-cut wood becomes hard to cut and burn marks appear on the wood. Keep the chain at proper tension.
Tighten all nuts, bolts and screws except the carburetor adjustment screws after each use.
Warning!
In order for the chain brake on your STIHL chain saw to properly perform its function of reducing the risk of kickback and other injuries, it must be properly maintained. Like an automobile brake, a chain saw chain brake incurs wear each time it is engaged.
The amount of wear will vary depending upon usage, conditions under which the saw is used and other factors. Excessive wear will reduce the effectiveness of the chain brake and can render it inoperable.
For the proper and effective operation of the chain brake, the brake band and clutch drum must be kept free of dirt, grease and other foreign matter which may reduce friction of the band on the drum.
For these reasons, each STIHL chain saw should be returned to trained personnel such as your STIHL servicing dealer for periodic inspection and servicing of the brake system according to the following schedule:
Heavy usage – every three months, Moderate usage – twice a year, Occasional usage – annually.
The chain saw should also be returned immediately for maintenance whenever the brake system cannot be thoroughly cleaned or there is a change in its operating characteristics.
For any maintenance of the emission control system please refer to the maintenance chart and to the limited warranty statement near the end of the instruction manual.
Do not clean your machine with a pressure washer. The solid jet of water may damage parts of the machine.
Store chain saw in a dry place and away from children. Before storing for longer than a few days, always empty the fuel tank (see chapter "Storing the Machine" in the instruction manual).
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
23
English
001BA191 KN
1
2
3
a
t = a : 2
143BA034 KN
1
2
001BA185 KN
001BA186 KN
143BA003 KN
Cutting Attachment
STIHL is the only manufacturer in the industry to produce its own chain saws, guide bars, saw chains and chain sprockets.
A cutting attachment consists of the saw chain, guide bar and chain sprocket.
The cutting attachment that comes standard is designed to exactly match the chain saw.
The pitch (t) of the saw chain (1),
chain sprocket and the nose sprocket of the Rollomatic guide bar must match.
The drive link gauge (2) of the saw
chain (1) must match the groove width of the guide bar (3).
If non-matching components are used, the cutting attachment may be damaged beyond repair after a short period of operation.
Mounting the Bar and Chain (side chain tensioner)
Removing the chain sprocket cover
N Unscrew the nuts and take off the
chain sprocket cover.
N Turn the screw (1)
counterclockwise until the tensioner slide (2) butts against the left end of the housing slot.
Disengaging the chain brake.
N Pull the hand guarad towards the
front handle until there is an audible click – the chain brake is disengaged.
Fitting the chain
Wear work gloves to protect your hands from the sharp cutters.
N Fit the chain – start at the bar nose.
24
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
English
3
1
1
2
4
001BA187 KN
143BA034 KN
1
2
207BA009 KN
001BA186 KN
143BA003 KN
N Fit the guide bar over the studs (1) –
the cutting edges on the top of the bar must point to the right.
N Engage the peg of the tensioner
slide in the locating hole (2) –- place the chain over sprocket (3) at the same time.
N Turn the tensioning
screw (4)clockwise until there is very little chain sag on the underside of the bar – and the drive link tangs are engaged in the bar groove.
N Refit the sprocket cover and screw
on the nuts only fingertight.
N Go to chapter on "Tensioning the
Saw Chain"
Mounting the Bar and Chain (front chain tensioner)
Removing the chain sprocket cover
N Unscrew the nut and remove the
chain sprocket cover.
Disengage the chain brake.
N Pull the hand guard towards the
front handle until there is an audible click – the chain brake is disengaged.
Fitting the chain
N Turn the screw (1)
counterclockwise until the tensioning nut (2) butts against the left end of the housing slot.
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
Wear work gloves to protect your hands from the sharp cutters.
N Fit the chain – start at the bar nose.
25
English
4
1
1
2
3
207BA010 KN
1
2
3
2310BA013 KN
1
2310BA014 KN
2310BA015 KN
2
1
3
2310BA016 KN
2
2310BA017 KN
Mounting the Bar and Chain (quick chain tensioner)
Removing the chain sprocket cover
N Fit the guide bar over the studs (1) –
the cutting edges on the top of the bar must point to the right.
N Engage the peg of the tensioner
slide in the locating hole (2) –- place the chain over the sprocket (3) at the same time.
N Turn the tensioning screw (4)
clockwise until there is very little chain sag on the underside of the bar – and the drive link tangs are engaged in the bar groove.
N Refit the sprocket cover and screw
on the nut only fingertight.
N Go to chapter on "Tensioning the
Saw Chain"
N Swing grip (1) into position (until it
engages)
N Turn the wing nut (2) to the left until
it hangs loosely in the chain sprocket cover (3)
N Remove chain sprocket cover (3)
Mounting the tensioning gear
N Remove screw (2)
N Position tensioning gear (1) and
guide bar (3) relative to one another
N Insert and tighten screw (2)
N Remove and reverse tensioning
gear (1)
26
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
English
001BA186 KN
1
181BA012 KN
2
3
181BA013 KN
135BA011 KN
4
5
2310BA018 KN
Releasing the chain brake
N Pull hand guard towards the front
handle until it engages audibly – chain brake is released
Fitting the saw chain
N Fit the saw chain – starting at the
nose of the guide bar – pay attention to the position of the tensioning gear and the cutting edges
N Turn tensioning gear (1) to the right
as far as possible
N Turn the guide bar so that the
tensioning gear faces the user
N Place the saw chain on the chain
sprocket (2)
N Slide the guide bar over the collar
screw (3); the head of the rear collar screw must protrude into the oblong hole
N Guide the drive link into the bar
groove (see arrow) and turn the tensioning gear to the left as far as possible
N Fit chain sprocket cover, sliding the
guide lugs into the engine housing openings
Put on protective gloves – risk of injury by the sharp cutters.
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
When fitting the chain sprocket cover, the teeth of the adjusting wheel and the tensioning gear must mesh; if necessary,
27
English
1
133BA024 KN
1
143BA045 KN
N turn the adjusting wheel (4) a little
until the chain sprocket cover can be slid completely against the engine housing
N Swing grip (5) into position (until it
engages)
N Fit wing nut and tighten lightly N Next step: see "Tensioning the Saw
Chain"
Tensioning the Saw Chain (side chain tensioner)
Retensioning during cutting work:
N Shut off the engine. N Loosen the nuts. N Hold the bar nose up. N Use a screwdriver to turn the
tensioning screw (1) clockwise until the chain fits snugly against the underside of the bar.
N While still holding the bar nose up,
tighten down the nuts firmly.
N Go to "Checking Chain Tension". A new chain has to be retensioned more
often than one that has been in use for some time.
N Check chain tension frequently –
see chapter on "Operating Instructions".
Tensioning the Saw Chain (front chain tensioner)
Retensioning during cutting work:
N Switch off the engine. N Loosen the nuts. N Hold the bar nose up. N Use a screwdriver to turn the
tensioning screw (1) clockwise until the chain fits snugly against the underside of the bar.
N While still holding the bar nose up,
tighten down the nuts firmly.
N Go to "Checking Chain Tension". A new chain has to be retensioned more
often than one that has been in use for some time.
N Check chain tension frequently –
see chapter on "Operating Instructions".
28
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
English
1
2
001BA112 KN
143BA007 KN
Tensioning the Saw Chain (quick chain tensioner)
Retensioning during cutting work:
N Shut off the engine. N Pull out the hinged clip and loosen
the wingnut.
N Turn the adjusting wheel (1)
clockwise as far as stop.
N Tighten down the wingnut (2) firmly
by hand.
N Fold down the hinged clip. N Go to "Tensioning the Saw Chain"
A new chain has to be retensioned more often than one that has been in use for some time.
N Check chain tension frequently –
see chapter on "Operating Instructions".
Checking Chain Tension
N Shut off the engine. N Wear work gloves to protect your
hands.
N The chain must fit snugly against
the underside of the bar and it must still be possible to pull the chain along the bar by hand.
N If necessary, retension the chain. A new chain has to be retensioned more
often than one that has been in use for some time.
N Check chain tension frequently –
see chapter on "Operating Instructions".
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 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.
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
29
English
001BA229 KN
001BA218 KN
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.
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 recommend STIHL HP Ultra 2-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 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.).
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 3 months 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.
Gaso­line
Oil (STIHL 50:1 or equiva­lent 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
Preparing the machine
N Before fueling, clean the cap and
the area around it to ensure that no dirt falls into the fuel tank
N Always position the machine so that
the cap is facing upwards
Opening
N Raise the grip into an upright
position.
30
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
English
001BA219 KN
001BA224 KN
001BA220 KN
001BA221 KN
001BA222 KN
001BA223 KN
001BA225 KN
N Turn the cap counterclockwise
(approx. 1/4 turn).
N Remove fuel filler cap.
Refueling
Take care not to spill fuel while fueling and do not overfill the tank.
Closing
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.
N While pressing the cap down, twist it
firmly clockwise as far as it will go (approx. 1/4 turn).
N Fold down the grip.
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.
With grip in an upright position:
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
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.
31
English
001BA227 KN
001BA226 KN
001BA158 KN
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.
Chain Lubricant
For automatic and reliable lubrication of the chain and guide bar – use only an environmentally compatible quality chain and bar lubricant. Rapidly biodegradable STIHL Bioplus is recommended.
Biological chain oil must be resistant to aging (e.g. STIHL Bioplus) since it will otherwise quickly turn to resin. This results in hard deposits that are difficult to remove, especially in the area of the chain drive, clutch and chain. It may even cause the oil pump to seize.
The service life of the chain and guide bar depends on the quality of the lubricant. It is therefore essential to use only a specially formulated chain lubricant.
Do not use waste oil. Renewed contact with waste oil can cause skin cancer. Moreover, waste oil is environmentally harmful.
Waste oil does not have the necessary lubricating properties and is unsuitable for chain lubrication.
Filling Chain Oil Tank
Preparations
N Thoroughly clean the oil filler cap
and the area around it to ensure that no dirt falls into the tank.
N Position the machine so that the
filler cap is facing up.
N Open the filler cap.
Filling chain oil tank
N Refill the chain oil tank every time
you refuel.
Take care not to spill chain oil while refilling and do not overfill the tank.
N Close the filler cap. There must still be a small amount of oil
in the oil tank when the fuel tank is empty.
If the oil level in the tank does not go down, the reason may be a fault in the oil supply system: Check chain lubrication, clean the oilways, contact your dealer
32
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
English
143BA024 KN
143BA011 KN
for assistance if necessary STIHL recommends that you have servicing and repair work carried out exclusively by an authorized STIHL servicing dealer.
Checking Chain Lubrication
The saw chain must always throw off a small amount of oil.
Never operate your saw without chain lubrication. If the chain runs dry, the whole cutting attachment will be irretrievably damaged within a very short time. Always check chain lubrication and the oil level in the tank before starting work.
Every new chain has to be broken in for about 2 to 3 minutes.
After breaking in the chain, check chain tension and adjust if necessary – see "Checking Chain Tension".
Chain Brake
Locking chain with chain brake
in an emergency when starting at idling speed
The chain is stopped and locked when the hand guard is pushed toward the bar nose by the left hand – or when brake is activated by inertia in certain kickback situations.
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
33
English
143BA012 KN
208BA005 KN
Releasing the chain brake
N Pull the hand guard back toward the
front handle.
Always disengage chain brake before accelerating engine and before starting cutting work. The only exception to this rule is when you check operation of the chain brake.
High revs with the chain brake engaged (chain locked) will quickly damage the powerhead and chain drive (clutch, chain brake).
The chain brake is designed to be activated also by the inertia of the front hand guard
if the forces are sufficiently high. The hand guard is accelerated toward the bar nose - even if your left hand is not behind the hand guard, e.g. during a
felling cut. The chain brake will operate only if it has been properly maintained and the hand guard has not been modified in any way.
Check operation of chain brake
Before starting work: Run engine at idle speed, engage the chain brake (push hand guard toward bar nose). Accelerate up to full throttle for no more than 3 seconds – the chain must not rotate. The hand guard must be free from dirt and move freely.
Chain brake maintenance
The chain brake is subject to normal wear. It is necessary to have it serviced and maintained regularly by trained personnel, such as your STIHL servicing dealer, at the following intervals:
Full-time usage: every 3
months
Part-time usage: every 6
months
Occasional usage: every 12
months
Winter Operation
At temperatures below +50°F (+10°C):
N Squeeze the throttle trigger lockout
and move the Master Control lever to l (cold start).
N Turn the knob above the rear handle
90° counterclockwise.
N Lift off the carburetor box cover
vertically.
34
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
English
135BA029 LÄ
STOP
0
001BA140 KN
N Lift out the shutter (in front of spark
plug) vertically.
N Turn the shutter 180°. N Refit the shutter. N Refit the carburetor box cover and
secure it with the knob.
Heated air is now drawn in from around the cylinder to warm the carburetor – this helps prevent carburetor icing.
At temperatures above +70 °F (+ 20°C), always close the shutter again. This is necessary to avoid engine running problems and overheating.
Starting / Stopping the Engine
Versions with Easy2Start
This machine is extremely simple and easy to start, even for children.
To reduce the risk of serious or fatal injury:
do not allow children or other
unauthorized persons to attempt to start or otherwise use the machine
never allow children or
unauthorized persons access to the machine
never leave the machine
unattended while working or during work breaks
after work, store in a safe, secure
location out of the reach of children and other unauthorized persons
Positions of Master Control lever
Stop 0 – engine off – the ignition is
switched off. Normal run position F – engine runs or
can fire. Starting throttle n – this position is
used to start a warm engine. The Master Control lever moves to the normal run position as soon as the throttle trigger is squeezed.
Choke closed l – this position is used to start a cold engine.
Setting the Master Control lever
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
To move the Master Control lever from the normal run position (F) to choke closed (l), press down the throttle trigger lockout and squeeze the throttle
35
English
143BA018 KN
143BA019 KN
trigger at the same time and hold them in that position – now set the Master Control lever.
To select the starting throttle position (n), move the Master Control lever to choke closed (l) first, then push it into the starting throttle position (n).
The Master Control lever must be in the choke closed position (l) before it can be moved to to the starting throttle position (n).
The Master Control lever moves from the starting throttle position (n) to the normal run position (F) when you press down the throttle trigger lockout and blip the throttle trigger at the same time.
To switch off the engine, move the Master Control lever to Stop 0.
Choke closed (l) if the engine is cold If the engine stalls when you open
the throttle after starting.
If the fuel tank was run until empty
(engine stopped).
When starting for the first time. If the fuel tank was run until empty
(engine stopped).
Holding the saw
There are two ways of holding the saw when starting.
On the ground
Between knees or thighs
N Hold the rear handle tightly between
your legs, just above the knees.
N Hold the front handle firmly with
your left hand – your thumb should be under the handle.
Starting throttle position (n) If the engine is warm, i.e. if it has
been running for about one minute.
When the engine begins to fire. After clearing a flooded combustion
chamber.
Fuel pump
Press the fuel pump bulb several times – even if the bulb is already filled with fuel:
36
N Place your saw on the ground.
Make sure you have a firm footing – check that the chain is not touching any object or the ground.
N Hold the saw firmly on the ground
with your left hand on the front handle – your thumb should be under the handle.
N Put your right foot into the rear
handle and press down.
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
English
143BA020 KN
135BA027 KN
Starting
Standard versions
N Pull the starter grip slowly with your
right hand until you feel it engage – and then give it a brisk strong pull and push down the front handle at the same time. Do not pull out the starter rope to full length – it might otherwise break. Do not let the starter grip snap back. Guide it slowly back into the housing so that the starter rope can rewind properly.
Machines without additional manual fuel pump: If the engine is new or after a long out-of-service period, it may be necessary to pull the starter rope several times to prime the fuel system.
Models with Easy2Start
The Easy2Start stores the energy required to start the saw. For this reason there may be a delay of a few seconds between cranking the engine and it actually starting.
There are two ways of starting machines with Easy2Start:
N Hold the starter grip with your right
hand and pull it out slowly and steadily – or – hold the starter grip with your right hand and give it several short pulls, using only a short length of rope for each pull.
N Push down the handle while
cranking. Do not pull out the rope to its full length – 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.
Starting the saw
Bystanders must be well clear of the general work area of the saw.
N Observe safety precautions.
Versions with manual fuel pump
N Press the fuel pump bulb at least
five times – even if the bulb is already filled with fuel.
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
37
English
135BA015 KN
2
1
208BA000 KN
0
3
3
4
5
0
208BA001 KN
Versions with decompression valve
N Press in the button to open the
decompression valve.
The decompression valve closes as soon as the engine fires.
N For this reason you must press in
the button before each starting attempt.
All models
N Push the hand guard (1) forward –
the chain is locked.
N Press down trigger lockout (2) and
pull the throttle trigger at the same time. Set Master Control lever (3) to:
Choke closed (l) If the engine is cold (also use this
position if the engine stopped when you opened the throttle after starting)
Starting throttle position (n) If the engine is warm, i.e. if it has
been running for about one minute.
N Hold and start your saw as
described.
When the engine begins to fire:
N Set the Master Control lever to the
starting throttle position (n ).
N Hold and start your saw as
described.
As soon as the engine runs
N Press down the trigger lockout and
the blip the throttle trigger (4) – the Master Control lever (3) moves to the run position F and the engine settles down to idling speed.
As the chain brake is still engaged, the engine must be returned to idling speed immediately – or the engine housing and chain brake might otherwise be damaged.
38
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
English
143BA012 KN
N Pull the hand guard back toward the
front handle.
The chain brake is now disengaged – your saw is ready for operation.
Always disengage chain brake before accelerating the engine. High revs with the chain brake engaged (chain locked) will quickly damage the clutch and chain brake.
At very low outside temperatures
If the engine does not start
If you did not move the Master Control lever from the choke closed position (l) to the starting throttle position (n) quickly enough, the engine may be flooded.
N Move the Master Control lever to the
stop position (0).
N Remove the spark plug – see
"Spark Plug".
N Dry the spark plug. N Crank the engine several times with
the starter to clear the combustion chamber.
N Refit the spark plug – see "Spark
Plug".
N Set Master Control lever to the
starting throttle position (n) – even if the engine is cold.
N Now start the engine.
Operating Instructions
During the 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 unnecessarily 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 shortblock are greater during this period. The engine develops its maximum power after about 5 to 15 tank fillings.
During work
Do not make the mixture leaner to achieve an apparent increase in power – this could damage the engine – see "Adjusting the Carburetor".
Open the throttle only when the chain brake is off. Running the engine at high revs with the chain brake engaged (chain locked) will quickly damage the shortblock and chain drive (clutch, chain brake).
N Allow engine to warm up at part
throttle.
Stopping the Engine
N Move the Master Control lever to the
stop position (0).
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
Check chain tension frequently
A new saw chain must be retensioned more frequently than one that has been in use already for an extended period.
39
English
2
3
1
143BA026 KN
Chain cold
Tension is correct when the chain fits snugly against the underside of the bar but can still be pulled along the bar by hand. Retension if necessary – see "Tensioning the Saw Chain".
Chain at operating temperature
The chain stretches and begins to sag. The drive links must not come out of the bar groove on the underside of the bar – the chain may otherwise jump off the bar. Retension the chain – see "Tensioning the Saw Chain".
The chain contracts as it cools down. If it is not slackened off, it can damage the crankshaft and bearings.
After a long period of full-throttle operation
After a long period of full-throttle operation, allow engine to run for a while at idle speed so that the heat in the engine can be dissipated by flow of cooling air. This protects engine­mounted components (ignition, carburetor) from thermal overload.
After finishing work
N Slacken off the chain if you have
retensioned it at operating temperature during work.
Always slacken off the chain again after finishing work. The chain contracts as it cools down. If it is not slackened off, it can damage the crankshaft and bearings.
Short-term storage
Wait for engine to cool down. Keep the machine with a full tank of fuel in a dry place, well away from sources of ignition, until you need it again.
Long-term storage
See "Storing the machine"
Taking Care of the Guide Bar
N Turn the bar over – every time you
sharpen the chain and every time you replace the chain – this helps avoid one-sided wear, especially at the nose and underside of the bar.
N Regularly clean the oil inlet hole (1),
the oilway (2) and the bar groove (3).
N Measure the groove depth – with
the scale on the filing gauge (special accessory) – in the area used most for cutting.
40
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
English
208BA001 KN
208BA005 KN
1
135BA035 KN
Chain type Pitch Minimum
groove depth
Picco 3/8" P 0.20"
(5.0 mm)
Rapid 1/4" 0.16"
(4.0 mm)
Rapid 3/8"; 0.325" 0.24"
(6.0 mm)
Rapid 0.404" 0.28"
(7.0 mm)
If groove depth is less than specified: N Replace the guide bar. The drive link tangs will otherwise
scrape along the bottom of the groove – the cutters and tie straps will not ride on the bar rails.
Air Filter System
The air filter system can be adapted to suit different operating conditions by installing a choice of filters. Changing the filter is quick and simple.
The saw comes standard with either a fabric filter or a fleece filter.
Cleaning the Air Filter
If there is a noticeable loss of engine power
N Press down the throttle trigger
lockout and move the Master Control lever to choke closed l.
N Turn the knob 90° to the left. N Lift off the carburetor box cover
vertically.
N Always replace damaged filters. N Clean away loose dirt from around
the filter.
Fabric filter
For normal operating conditions and winter operation.
Fleece filter
For dry and very dusty work areas.
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
N Place fingers behind the air filter (1),
press thumbs against the housing and swing the filter in direction of rear handle.
41
English
To avoid damaging the filter, do not use tools for removing and installing the air filter.
N Blow out the filter with compressed
air from the clean air side.
If the filter fabric is caked with dirt or no compressed air is available:
N Wash the filter in a clean, non-
flammable solution (e.g. warm soapy water) and then dry.
N Reinstall the air filter.
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.
General Information
The carburetor comes from the factory with a standard setting.
This setting provides an optimum fuel-air mixture under most operating conditions.
Changing the setting of the high speed screw alters the engine's power output and the maximum off-load engine speed.
If the setting is too lean there is a risk of engine damage due to insufficient lubrication and overheating.
Standard setting
N Stopping the engine N Check the air filter and clean or
replace if necessary.
42
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
English
LA
208BA010 KN
H
L
H
L
208BA011 KN
L
H /
3
4
1
LA
Carburetors with H = 1 and L = 1
N Carefully screw both adjusting
screws down onto their seats (clockwise).
N Turn the high speed screw (H) one
full turn counterclockwise.
N Turn the low speed screw (L) one
full turn counterclockwise.
Carburetors with H = 3/4 and L = 1
N Turn high speed screw (H)
counterclockwise as far as stop (no more than 3/4 turn).
N Turn the low speed screw (L)
carefully clockwise as far as stop, then turn it back 1 turn.
Readjust idle
Engine stops while idling
N Turn the low speed screw (L)
carefully clockwise as far as stop, then turn it back 1 turn.
N Turn the idle speed screw (LA)
clockwise until the chain begins to run – then back it off 1/4 turn.
Chain runs when engine is idling
N Turn the low speed screw (L)
carefully clockwise as far as stop, then turn it back 1 turn.
N Turn the idle speed screw (LA)
counterclockwise until the chain stops running – then turn it another 1/4 turn in the same direction.
If the chain continues moving when the engine is idling, have your saw checked and repaired by your servicing dealer.
Erratic idling behavior, poor acceleration (even though low speed screw is open one turn)
N Idle setting is too lean: Turn the low
speed screw (L) counterclockwise until the engine runs and accelerates smoothly.
It is usually necessary to change the setting of the idle speed screw (LA) after every correction to the low speed screw (L).
Fine tuning for operation at high altitude
A slight correction of the setting may be necessary if engine does not run satisfactorily:
N Check the standard setting. N Warm up the engine. N Turn high speed screw (H) slightly
clockwise (leaner). On carburetors with H = 3/4, turn no further than stop.
If the setting is too lean there is a risk of engine damage due to insufficient lubrication and overheating.
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
43
English
208BA005 KN
4
3
135BA001 KN
208BA020 KN
000BA039 KN
A
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 Depress throttle trigger lockout and
throttle trigger at the same time and move the Master Control lever to choke closed l.
N Place fingers behind the air filter (3),
press thumbs against the housing, swing the filter in the direction of the rear handle and remove it.
N Remove the shutter (4).
N Pull off the spark plug boot. N Unscrew the spark plug.
Checking the Spark Plug
N Clean dirty spark plug. N Check electrode gap (A) and
readjust if necessary – see "Specifications".
N Use only resistor type spark plugs of
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.
N Turn the knob 90° to the left. N Lift off the carburetor box cover
vertically.
44
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
Warning!
1
2
000BA071 KN
1
1
1
1
133BA014 KN
To reduce the risk of fire and burn injury, use only spark plugs authorized by STIHL. Always press spark plug boot (1) snugly onto spark plug terminal (2) of the 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
Engine Running Behavior Replacing the Starter Rope
and Rewind Spring
If engine running behavior is unsatisfactory even though the air filter is clean and the carburetor is properly adjusted, the cause may be the muffler.
Have the muffler checked for contamination (carbonization) by your servicing dealer.
STIHL recommends that you have servicing and repair work carried out exclusively by an authorized STIHL servicing dealer.
N Take out the screws (1). N Push the hand guard upwards. N Pull the underside of the fan
housing away from the crankcase and remove it downwards.
Installing the spark plug
N Screw home the spark plug, fit the
boot and press it down firmly.
N Install the shutter and air filter. N Fit the carburetor box cover.
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
45
English
208BA012 KN
2
3
4
5
6
7
8
9
208BA013 KN
7
8
9
208BA017 KN
9
10
208BA014 KN
a
135BA036 KN
12
11
108BA015 KN
Versions with Easy2Start
N Use circlip pliers to carefully remove
the circlip (2).
N Pull off the washer (3), carrier (4),
spring housing (5) and washer (6).
If suitable circlip pliers are not available, have the starter rope or rewind spring replaced by your servicing dealer.
Standard versions
The rewind spring may pop out and uncoil during this operation –
take care to avoid the risk of injury.
Versions with Easy2Start
N Remove the spring clip (7). N Carefully remove the rope rotor
with washer (8) and pawls (9).
The rewind spring may pop out and uncoil during this operation –
take care to avoid the risk of injury.
Replacing the Starter Rope
Models with ElastoStart
N Thread the new rope through the
starter grip and tie a simple overhand knot. Dimension "a" should be about 0.16 in (4 mm) to
0.23 in (7 mm).
N Pull the knot back into the grip. N Refit the cap in the grip.
N Remove the spring clip (7). N Carefully remove the rope rotor
46
with washer (8) and pawl (9).
N Pry the cap (10) out of the grip. N Remove the remaining rope from
the rotor and starter grip.
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
Thread the end of the rope N through the top of the guide
bushing (11) and rope rotor (12) and secure it with a simple overhand knot.
N Go to "Installing the Rope Rotor".
English
135BA032 LÄ
7
8
9
208BA013 KN
7
8
9
208BA017 KN
9
Models without ElastoStart and models with Easy2Start
N Remove the remaining rope from
the rotor and starter grip.
N Thread the new starter rope through
the rotor and secure it with a simple overhand knot.
N Thread the other end of the rope
through the rope guide bushing (from inside) and the underside of the starter grip and secure it with one of the special knots shown – do not wind the rope onto the rotor.
Installing the Rope Rotor
Standard versions
N Coat the rope rotor bearing bore
with non-resinous oil.
N Slip the rotor over the starter post –
turn it back and forth to engage the anchor loop of the rewind spring.
N Refit the pawl (9) in the rotor. N Fit the washer (8) on the starter
post.
N Use a screwdriver or suitable pliers
to install the spring clip (7) on the starter post and engage it on the pawl's peg – the spring clip must point clockwise as shown in the illustration.
Versions with Easy2Start
N Coat the rope rotor bearing bore
with non-resinous oil.
N Slip the rotor over the starter post –
turn it back and forth to engage the anchor loop of the rewind spring.
N Refit the pawls (9) in the rotor. N Fit the washer (8) on the starter
post.
N Use a screwdriver or suitable pliers
to install the spring clip (7) on the starter post and engage it on the pawl's peg – the spring clip must point clockwise as shown in the illustration.
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
47
English
108BA014 KN
001BA126 KN
Tensioning the Rewind Spring
N Make a loop in the starter rope and
use it to turn the rope rotor six full revolutions in the direction of the arrow.
N Hold the rotor steady. Pull out and
straighten the twisted rope.
N Release the rope rotor. N Release the rope slowly so that it
winds onto the rotor.
The starter grip must sit firmly in the rope bushing. If the grip droops to one side: Add one more turn on the rope rotor to increase spring tension.
When the starter rope is fully extended it must still be possible to rotate the rotor another half turn. If this is not the case, the spring is overtensioned and could break.
N Take one turn of the rope off the
rotor.
Versions with Easy2Start
N Fit the spring housing, driver and
washer on the starter post.
N Use circlip pliers to carefully install
the circlip in the starter post groove.
All versions
N Fit the fan housing on the
crankcase.
Replacing a Broken Rewind Spring
N Removing the Rope Rotor
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.
N Carefully remove the parts of the
spring.
N Lubricate the new spring with a few
drops of non-resinous oil.
N Place the new spring with frame in
position in the fan housing – the anchor loop must engage the lug in the housing.
N Apply suitable tools (screwdriver,
punch, etc.) to the recesses and push the spring into its seat in the fan housing – it slips out of the frame in this process.
N Take the frame out of the fan
housing.
N Reinstall the rope rotor, tension the
rewind spring, fit the fan housing and secure it in position.
48
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
Storing the Machine Checking and Replacing
001BA121 KN
001BA122 KN
1
2
4
5
6
1
2
3
6
the Chain Sprocket
English
For periods of 3 months or longer N Drain and clean the fuel tank in a
well ventilated area.
N Dispose of fuel properly in
accordance with local environmental requirements.
N Run the engine until the carburetor
is dry – this helps prevent the carburetor diaphragms sticking together.
N Remove the saw chain and guide
bar, clean them and spray with corrosion inhibiting oil.
N Thoroughly clean the machine –
pay special attention to the cylinder fins and air filter.
N If you use a biological chain and bar
lubricant, e.g. STIHL BioPlus, completely fill the chain oil tank.
N Store the machine in a dry, high or
locked location, out of the reach of children and other unauthorized persons.
N Remove chain sprocket cover, saw
chain and guide bar.
N Release chain brake – pull hand
guard against the front handle
Fit new chain sprocket
after use of two saw chains or
earlier
if the wear marks (arrows) are
deeper than 0.02 in (0.5 mm) – otherwise the service life of the saw chain is reduced – use check gauge (special accessory) to test
Using two saw chains in alternation helps preserve the chain sprocket.
Use only STIHL original chain sprockets to help ensure reliable functioning of the chain brake.
N Use a screwdriver to remove the E-
clip (1)
N Remove the washer (2) N Remove rim sprocket (3) (if so
equipped), clutch drum (4) and needle cage (6).
N Inspect transport profile for rim
sprocket on the clutch drum (4) – if there are also heavy signs of wear, also replace the clutch drum
N Remove clutch drum with integrated
spur chain sprocket (5) (if so equipped) including needle cage (6) from the crankshaft – for powerheads with Quickstop Plus chain brake system, depress throttle trigger lockout beforehand
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
49
English
689BA027 KN
a
Install spur chain sprocket / rim sprocket
N Clean crankshaft stub and needle
cage and lubricate with STIHL lubricant (special accessory)
N Slide needle cage onto the
crankshaft stub
N After refitting, turn the clutch drum
and/or spur chain sprocket approx. 1 full turn so that the carrier for the oil pump drive engages
N Refit the rim sprocket – cavities
toward the outside
N Refit washer and E-clip on the
crankshaft
Maintaining and Sharpening the Saw Chain
Sawing effortlessly with a properly sharpened saw chain
A properly sharpened saw chain cuts through wood effortlessly even with very little pushing.
Never use a dull or damaged saw chain – this leads to increased physical strain, increased vibration load, unsatisfactory cutting results and increased wear.
N Clean the saw chain N Check the saw chain for cracks and
damaged rivets
N Replace damaged or worn chain
components and adapt these parts to the remaining parts in terms of shape and level of wear – rework accordingly
Carbide-tipped (Duro) saw chains are especially wear-resistant. For an optimal sharpening result, STIHL recommends STIHL servicing dealers.
Compliance with the angles and dimensions listed below is absolutely necessary. An improperly sharpened saw chain – especially depth gauges that are too low – can lead to increased kickback tendency of the chain saw – risk of injury!
Chain pitch
The chain pitch marking (a) is embossed in the area of the depth gauge of each cutter.
Marking (a) Chain pitch
Inches mm 7 1/4 P 6.35 1 or 1/4 1/4 6.35 6, P or PM 3/8 P 9.32 2 or 325 0.325 8.25 3 or 3/8 3/8 9.32 4 or 404 0.404 10.26
The diameter of file to be used depends on the chain pitch – see table "Sharpening tools".
The angles of the cutter must be maintained during resharpening.
50
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
English
A
B
689BA021 KN
689BA025 KN
001BA203 KN
689BA018 KN
90°
689BA043 KN
Sharpening and side plate angles
A Sharpening angle
STIHL saw chains are sharpened with a 30° sharpening angle. Ripping chains, which are sharpened with a 10° sharpening angle, are exceptions. Ripping chains have an X in the designation.
B Side plate angle The correct side plate angle results
automatically when the specified file holder and file diameter are used.
Tooth shapes Angle (°)
AB
Micro = semi-chisel, e. g.,
30 75 63 PMC3, 26 RMC3, 36 RMC
Micro = full chisel, e. g.,
30 60 63 PS3, 26 RSC, 36 RSC3
Ripping chain, e. g.,
10 75 63 PMX, 36 RMX
The angles must be identical for all cutters in the saw chain. Varying angles: Rough, uneven running of the saw chain, increased wear – even to the point of saw chain breakage.
File holder
N Use a file holder
Always use a file holder (special accessory, see table "Sharpening tools") when sharpening saw chains by hand. File holders have markings for the sharpening angle.
Use only special saw chain files! Other files are unsuitable in terms of shape and type of cutting.
To check the angles
STIHL filing gauge (special accessory, see table "Sharpening tools") – a universal tool for checking sharpening and side plate angles, depth gauge setting, and tooth length, as well as cleaning grooves and oil inlet holes.
Proper sharpening
N Select sharpening tools in
accordance with chain pitch
N Clamp guide bar if necessary N Block saw chain – push the hand
guard forward
N To advance the saw chain, pull the
hand guard toward the handlebar: The chain brake is disengaged. With the Quickstop Plus chain brake system, additionally press the throttle trigger lockout
N Sharpen frequently, removing little
material – two or three strokes of the file are usually sufficient for simple resharpening
N Guide the file: horizontally (at a
right angle to the side surface of the guide bar) in accordance with the specified angle – according to the
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
51
English
689BA023 KN
a
2
689BA061 KN
1
689BA051 KN
689BA044 KN
markings on the file holder – rest the file holder on the tooth head and the depth gauge
N File only from the inside outward N The file only sharpens on the
forward stroke – lift the file on the backstroke
N Do not file tie straps and drive links N Rotate the file a little periodically in
order to avoid uneven wear
N To remove file burr, use a piece of
hardwood
N Check angle with file gauge All cutters must be equally long. With varying cutter lengths, the cutter
heights also vary and cause rough running of the saw chain and chain breakage.
N All cutters must be filed down equal
to the length of the shortest cutter – ideally, one should have this done by a servicing dealer using an electric sharpener
a Required distance between depth
gauge and cutting edge
When cutting softwood outside of the frost season, the distance can be increased by up to 0.2 mm (0.008").
Chain pitch Depth gauge
Distance (a) Inches (mm) mm (Inches) 1/4 P (6.35) 0.45 (0.018) 1/4 (6.35) 0.65 (0.026) 3/8 P (9.32) 0.65 (0.026)
0.325 (8.25) 0.65 (0.026) 3/8 (9.32) 0.65 (0.026)
0.404 (10.26) 0.80 (0.031)
Lowering the depth gauges
The depth gauge setting is lowered when the cutter is sharpened.
N Check the depth gauge setting after
each sharpening
Saw chains with humped drive link (2) – upper part of the humped drive link (2) (with service mark) is lowered at the same time as the depth gauge of the cutter.
The rest of the humped drive link must not be filed; otherwise, this could increase the tendency of the chain saw to kick back.
N Rework the depth gauge so that it is
flush with the file gauge
Depth gauge setting
The depth gauge determines the depth to which the cutter penetrates the wood and thus the chip thickness.
52
N Lay the appropriate file gauge (1)
for the chain pitch on the saw chain and press it against the cutter to be checked – if the depth gauge protrudes past the file gauge, the depth gauge must be reworked
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
N Afterwards, dress the leading edge
of the depth gauge parallel to the service mark (see arrow) – when doing this, be careful not to further lower the highest point of the depth gauge
Depth gauges that are too low increase the kickback tendency of the chain saw.
English
689BA052 KN
N After sharpening, clean the saw
chain thoroughly, removing any filings or grinding dust – lubricate the saw chain thoroughly
N In the event of extended periods of
disuse, store saw chains in cleaned and oiled condition
N Lay the file gauge on the saw chain
– the highest point of the depth gauge must be flush with the file gauge
Sharpening tools (special accessories)
Chain pitch Round file ^ Round file File holder File gauge Taper square file Sharpening set Inches (mm) mm (Inches) Part number Part number Part number Part number Part number 1/4 P (6.35) 3.2 (1/8) 5605 771 3206 5605 750 4300 0000 893 4005 0814 252 3356 - - ­1/4 (6.35) 4.0 (5/32) 5605 772 4006 5605 750 4327 1110 893 4000 0814 252 3356 5605 007 1027 3/8 P (9.32) 4.0 (5/32) 5605 772 4006 5605 750 4327 1110 893 4000 0814 252 3356 5605 007 1027
0.325 (8.25) 4.8 (3/16) 5605 772 4806 5605 750 4328 1110 893 4000 0814 252 3356 5605 007 1028 3/8 (9.32) 5.2 (13/64) 5605 772 5206 5605 750 4329 1110 893 4000 0814 252 3356 5605 007 1029
0.404 (10.26) 5.5 (7/32) 5605 772 5506 5605 750 4330 1106 893 4000 0814 252 3356 5605 007 1030
1)
consisting of file holder with round file, taper square file and file gauge
1)
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
53
English
Inspections and Maintenance by Dealer
Spark Arresting Screen in Muffler
Spark arresting screen in muffler (not all markets)
N If the engine is down on power,
check the spark arresting screen in the muffler.
STIHL recommends that you have servicing and repair work carried out exclusively by an authorized STIHL servicing dealer.
54
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
Maintenance and Care
The following maintenance intervals apply for normal operating conditions only. If your daily working time is longer or operating conditions are difficult (very dusty work area, resin-rich wood, tropical wood, etc.), shorten the specified intervals accordingly. If you only use the saw occasionally, extend the intervals accordingly.
before starting work
after finishing work or daily
after each refueling stop
weekly
Complete machine
Throttle trigger, throttle trigger lockout, choke lever, stop switch, Master Control lever (depending on version)
Chain brake
Pickup body/filter in fuel tank
Fuel tank Clean X
Chain oil tank Clean X
Chain Lubrication Check X
Saw chain
Guide bar
Chain sprocket Check X
Air filter
Anti-vibration elements
Visual inspection (condition, leaks) XX
Clean X
Check operation XX
Check operation XX
Have checked by dealer
Check X
Clean, replace filter element XX
Replace XXX
Inspect, also check sharpness XX
Check chain tension XX
Sharpen X
Check (wear, damage) X
Clean and turn over X
Deburr X
Replace XX
Clean XX
Replace X
Check XX
Have replaced by dealer
1)
1)
English
monthly
every 12 months
if problem
if damaged
if required
X
X
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
55
English
The following maintenance intervals apply for normal operating conditions only. If your daily working time is longer or operating conditions are difficult (very dusty work area, resin-rich wood, tropical wood, etc.), shorten the specified intervals accordingly. If you only use the saw occasionally, extend the intervals accordingly.
before starting work
after finishing work or daily
after each refueling stop
weekly
monthly
every 12 months
if problem
Cooling inlets Clean X
Cylinder fins Clean XX
Carburetor
Spark plug
All accessible screws and nuts (not adjusting
2)
screws)
Spark arresting screen in muffler (not all markets)
Chain catcher
Safety labels Replace X
1)
STIHL recommends a STIHL servicing dealer.
2)
Firmly tighten down the cylinder base screws of professional saws (3.4 kW or more) after 10 to 20 hours of operation.
Check idle adjustment – chain must not rotate XX
Adjusting Idle Speed X
Readjust electrode gap X
Replace after 100 hours of operation
Retighten X
1)
Check
Clean, replace if necessary
1)
X
Check X
Replace X
if damaged
if required
X
56
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
Main Parts
9
3
1
4
5
6
7
8
9
10
11
13
12
8
14
15
2
24
26
27
17
16
18
19
21
20
23
22
25
#
208BA018 KN
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
English
1 Carburetor Box Cover Twist Lock 2 Carburetor Adjusting Screws 3 Fuel Pump 4 Decompression Valve
(Automatically Resetting)
5 Chain Brake 6 Muffler 7 Chain Sprocket 8 Chain Sprocket Cover 9 Chain Catcher 10 Side Chain Tensioner 11 Front Chain Tensioner 12 Guide Bar 13 Oilomatic Saw Chain 14 Adjusting Wheel for Quick Chain
Tensioner
15 Handle of Wingnut (Quick Chain
Tensioner1))
16 Oil Filler Cap 17 Bumper Spike 18 Front Hand Guard 19 Front Handle (Handlebar) 20 Starter Grip 21 Spark Plug Boot 22 Master Control Lever 23 Fuel Filler Cap 24 Throttle Trigger 25 Throttle Trigger Lockout 26 Rear Handle 27 Rear Hand Guard # Serial Number
1)
Depending on Model
1)
1)
1)
1)
1)
57
English
Definitions
1 Carburetor Box Cover Twist Lock
Lock for carburetor box cover.
2 Carburetor Adjusting Screws
For tuning the carburetor.
3Fuel Pump
Provides additional fuel feed for a cold start.
4 Decompression Valve
(Automatically Resetting)
Releases compression pressure to make engine starting easier – when activated.
5 Chain Brake
A device to stop the rotation of the chain. Is activated in a kickback situation by the operator's hand or by inertia.
6 Muffler
Reduces engine exhaust noises and diverts exhaust gases away from operator.
7 Chain Sprocket
The toothed wheel that drives the saw chain.
8 Chain Sprocket Cover
Covers the clutch and chain sprocket.
9 Chain Catcher
Helps to reduce the risk of operator contact by a chain when it breaks or comes off the bar.
10 Side Chain Tensioner
Permits precise adjustment of chain tension.
11 Front Chain Tensioner
Permits precise adjustment of chain tension.
12 Guide Bar
Supports and guides the saw chain.
13 Oilomatic Saw Chain
A loop consisting of cutters, tie straps and drive links.
14 Adjusting Wheel for Quick Chain
Tensioner
Permits precise adjustment of chain tension.
15 Handle of Wingnut (Quick Chain
Tensioner)
Has to be released to tension chain with adjusting wheel.
16 Oil Filler Cap
For closing the oil tank.
17 Bumper Spike
Toothed stop for holding saw steady against wood.
18 Front Hand Guard
Provides protection against projecting branches and helps prevent left hand from touching the chain if it slips off the handlebar. It also serves as the lever for chain brake activation.
19 Front Handle (Handlebar)
Handlebar for the left hand at the front of the saw.
20 Starter Grip
The grip of the pull starter, for starting the engine.
21 Spark Plug Boot
Connects the spark plug with the ignition lead.
22 Master Control Lever
Lever for choke control, starting throttle, run and stop switch position.
23 Fuel Filler Cap
For closing the fuel tank.
24 Throttle Trigger
Controls the speed of the engine.
25 Throttle Trigger Lockout
Must be depressed before the throttle trigger can be activated.
26 Rear Handle
The support handle for the right hand, located at the rear of the saw.
27 Rear Hand Guard
Gives added protection to operator's right hand.
Guide Bar Nose
The exposed end of the guide bar. (not illustrated, see chapter "Tensioning the Saw Chain")
Clutch
Couples engine to chain sprocket when engine is accelerated beyond idle speed. (not illustrated)
Anti-Vibration System
The anti-vibration system includes a number of anti-vibration elements designed to reduce the transmission of vibrations created by the engine and cutting attachment to the operator's hands. (not illustrated)
58
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
English
Specifications
EPA / CEPA
The Emission Compliance Period referred to on the Emissions Compliance Label indicates the number of operating hours for which the engine has been shown to meet Federal emission requirements.
Category
A = 300 hours B = 125 hours C = 50 hours
CARB
The Emission Compliance Period used on the CARB-Air Index Label indicates the terms:
Extended = 300 hours Intermediate = 125 hours Moderate = 50 hours
Engine
STIHL single cylinder two-stroke engine
MS 210, MS 210 C
Displacement: 2.15 cu. in.
(35.2 cm
3
) Bore: 1.6 in. (40 mm) Stroke: 1.1 in. (28 mm) Engine power to
ISO 7293:
2.0 hp (1.5 kW)
at 9,000 rpm Idle speed: 2,800 rpm High speed setting
when performing repairs (with bar and chain): 12,500 rpm
MS 230, MS 230 C
Displacement: 2.45 cu. in.
(40.2 cm
3
) Bore: 1.6 in. (40 mm) Stroke: 1.26in. (32mm) Engine power to
ISO 7293:
2.5 hp (1.9 kW)
at 10,000 rpm Idle speed: 2,800 rpm High speed setting
when performing repairs (with bar and chain): 14,000 rpm
MS 250, MS 250 C
Displacement: 2.77 cu. in.
(45.4 cm
3
)
Bore: 1.7 in.
(42.5 mm) Stroke: 1.26in. (32mm) Engine power to
ISO 7293:
3.0 hp (2.2 kW)
at 10,000 rpm Idle speed: 2,800 rpm High speed setting
when performing repairs (with bar and chain): 14,000 rpm
Ignition System
Electronic magneto ignition
Spark plug (resistor type): Bosch WSR 6 F
Electrode gap: 0.02 in. (0.5 mm)
Fuel System
All position diaphragm carburetor with integral fuel pump
Fuel tank capacity: 15.9 fl.oz (0.47 l)
Chain Lubrication
Fully automatic, speed-controlled oil pump with rotary piston
Oil tank capacity: 6.8 fl.oz (0.2 l)
Weight
dry, without bar and chain MS 210: 9.7 lbs
(4.4 kg)
MS 210 C with quick chain
adjuster and Easy2Start:
10.6 lbs. (4.8 kg)
MS 230: 10.1 lbs
(4.6 kg)
MS 230 C with quick chain
adjuster and Easy2Start:
10.8 lbs (4.9 kg)
MS 250: 10.1 lbs
(4.6 kg)
MS 250 C with quick chain
adjuster and Easy2Start:
10.8 lbs (4.9 kg)
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
59
English
Cutting Attachment (MS 210, MS 210 C, MS 230, MS 230 C)
Recommended cutting attachments complying with Section 5.11 of ANSI B
175.1-2000. Observe notes on ANSI B 175.1-2000
and definition of "low kickback chain" in chapter on "Safety Precautions and Working Techniques".
Rollomatic E 3/8" P Guide Bars
Reduced kickback STIHL guide bar (with green label)
Cutting lengths: 12, 14, 16 in. (30, 35,
40 cm) Pitch: 3/8" P (9.32 mm) Groove width: 0.050 in. (1.3 mm) Nose sprocket: 9-teeth
3/8" P Chain
Low kickback STIHL saw chains (with green label)
Picco Micro Comfort 3 (63 PMC3) Picco Duro (63 PD3) Pitch: 3/8" P (9.32 mm) Drive link gauge: 0.050 in. (1.3 mm)
Chain sprocket
6--tooth for 3/8" (spur sprocket)
Cutting Attachment (MS 250, MS 250 C)
Recommended cutting attachments complying with Section 5.11 of ANSI B
175.1-2000.
Observe notes on ANSI B 175.1-2000 and definition of "low kickback chain" in chapter on "Safety Precautions and Working Techniques".
Rollomatic E 3/8" P guide bars
Reduced kickback STIHL guide bar (with green label)
Cutting lengths: 12, 14, 16, 18 in. (30,
35, 40, 45 cm) Pitch: 3/8" P (9.32 mm) Groove width: 0.050 in. (1.3 mm) Nose sprocket: 9-tooth
Rollomatic E .325" guide bars
Reduced kickback STIHL guide bar (with green label)
Cutting lengths: 16, 18 in. (40, 45 cm) Pitch: .325" (8.25 mm) Groove width: 0.063 in. (1.6 mm) Nose sprocket: 11-tooth
3/8" P Chain
Low kickback STIHL saw chains (with green label)
Picco Micro Comfort 3 (63 PMC3) Picco Duro (63 PD3) Pitch: 3/8" P (9.32 mm) Drive link gauge: 0.050 in. (1.3 mm)
.325" saw chain
Low kickback STIHL saw chains (with green label)
Rapid Micro Comfort 3 (26 RMC3) Pitch: .325" (8.25 mm) Drive link gauge: 0.063 in. (1.6 mm)
Chain sprockets
6-tooth for 3/8" (spur sprocket) 7-tooth for 0.325" (spur sprocket)
Cutting Attachment (MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C)
To ensure compliance with the kickback properties required in Section 5.11 of ANSI B 175.1-2000, only use replacement chains that, when used with this specific powerhead, comply with Section 5.11 of the ANSI standard or are classed as "low kickback" chains according to ANSI B 175.1-2000.
Please ask your STIHL dealer for the latest recommendations on new bar/chain combinations developed after publication of this instruction manual.
60
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
English
432
432
1
1
001BA209 KN
cm
INCH
Special Accessories
Contact your STIHL dealer for information regarding special accessories that may be available for your product.
Chain scabbard
If you use guide bars of different lengths on the saw, the length of the chain scabbard must be matched to the guide bar to help reduce the risk of injury.
If the chain scabbard does not cover the full length of the guide bar, a suitable chain scabbard or a scabbard extension is necessary.
Depending on the model, the scabbard extension either comes standard with the saw or is available as a special accessory.
Fitting the chain scabbard extension onto the scabbard
The scabbard extension has two square cut-outs (1) that fit onto one of several sets of locking tabs (2, 3, 4) located on the scabbard. Each set of locking tabs is marked with the lenght of the bar to which they correspond, given in centimeters on one tab and in inches on the other.
N Determine the appropriate set of
tabs to be used based on the length the bar
N Push the scabbard extension over
the scabbard until the cut-outs align with desired set of tabs, and let them lock together
Ordering Spare Parts
Please enter your saw model, serial number as well as the part numbers of the guide bar and saw chain in the spaces provided. This will make re­ordering simpler.
The guide bar and saw chain are subject to normal wear and tear. When purchasing these parts, always quote the saw model, the part numbers and names of the parts.
Model
Serial number
Guide bar part number
Chain part number
See "Specifications" in this manual for the recommended reduced kickback cutting attachments.
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
61
English
Maintenance and Repairs Allocation of STIHL
Incorporated Warranty
Users of this unit should carry out only the maintenance operations described in this manual. Other repair work may be performed only by authorized STIHL service shops.
Warranty claims following repairs can be accepted only if the repair has been performed by an authorized STIHL servicing dealer using original STIHL replacement parts.
Original STIHL parts can be identified by the STIHL part number, the { logo and, in some cases, by the STIHL parts symbol K. The symbol may appear alone on small parts.
Declarations
Allocation of STIHL Incorporated warranty declarations on compliance with emission requirements for the following models:
STIHL Incorporated Federal Emission Control Warranty Statement
MS 250 MS 230 (not for California) MS 210 (not for California)
STIHL Incorporated California Exhaust and Evaporative Emissions Control Warranty Statement
MS 230 (for California only) MS 210 (for California only)
STIHL Incorporated Federal Emission Control Warranty Statement
Your Warranty Rights and Obligations
The U.S. Environmental Protection Agency (EPA) and STIHL Incorporated are pleased to explain the Emission Control System Warranty on your equipment type engine. In the U.S. new 1997 and later model year small off-road equipment engines must be designed, built and equipped, at the time of sale, to meet the U.S. EPA regulations for small non road engines. The equipment engine must be free from defects in materials and workmanship which cause it to fail to conform with U.S. EPA standards for the first two years of engine use from the date of sale to the ultimate purchaser.
STIHL Incorporated must warrant the emission control system on your small off-road engine for the period of time listed below provided there has been no abuse, neglect or improper maintenance of your small off-road equipment engine.
Your emission control system includes parts such as the carburetor and the ignition system. Also included may be hoses, and connectors and other emission-related assemblies.
Where a warrantable condition exists, STIHL Incorporated will repair your small off-road equipment engine at no cost to you including diagnosis (if the diagnostic work is performed at an authorized dealer), parts and labor.
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Manufacturer's Warranty Coverage
In the U.S., 1997 and later model year small off-road equipment engines are warranted for two years. If any emission­related part on your engine is defective, the part will be repaired or replaced by STIHL Incorporated free of charge.
Owner's Warranty Responsibilities
As the small off-road equipment engine owner, you are responsible for the performance of the required maintenance listed in your instruction manual. STIHL Incorporated recommends that you retain all receipts covering maintenance on your small off­road equipment engine, but STIHL Incorporated cannot deny warranty solely for the lack of receipts or for your failure to ensure the performance of all scheduled maintenance.
Any replacement part or service that is equivalent in performance and durability may be used in non-warranty maintenance or repairs, and shall not reduce the warranty obligations of the engine manufacturer.
As the small off-road equipment engine owner, you should be aware, however, that STIHL Incorporated may deny you warranty coverage if your small off-road equipment engine or a part has failed due to abuse, neglect, improper maintenance or unapproved modifications.
You are responsible for presenting your small off-road equipment engine to a STIHL service center as soon as a
problem exists. The warranty repairs will be completed in a reasonable amount of time, not to exceed 30 days.
If you have any questions regarding your warranty rights and responsibilities, please contact a STIHL customer service representative at 1-800-467­8445 or you can write to
STIHL Inc., 536 Viking Drive, P.O. Box 2015, Virginia Beach, VA 23450-2015
www.stihlusa.com
Coverage by STIHL Incorporated
STIHL Incorporated warrants to the ultimate purchaser and each subsequent purchaser that your small off-road equipment engine will be designed, built and equipped, at the time of sale, to meet all applicable regulations. STIHL Incorporated also warrants to the initial purchaser and each subsequent purchaser that your engine is free from defects in materials and workmanship which cause the engine to fail to conform with applicable regulations for a period of two years.
Warranty Period
The warranty period will begin on the date the utility equipment engine is purchased by the initial purchaser and you have signed and sent back the warranty card to STIHL.
If any emission-related part on your engine is defective, the part will be replaced by STIHL Incorporated at no cost to the owner. Any warranted part which is not scheduled for replacement
as required maintenance, or which is scheduled only for regular inspection to the effect of "repair or replace as necessary" will be warranted for the warranty period. Any warranted part which is scheduled for replacement as required maintenance will be warranted for the period of time up to the first scheduled replacement point for that part.
Diagnosis
You, as the owner, shall not be charged for diagnostic labor which leads to the determination that a warranted part is defective. However, if you claim warranty for a component and the machine is tested as non-defective, STIHL Incorporated will charge you for the cost of the emission test. Mechanical diagnostic work will be performed at an authorized STIHL servicing dealer. Emission test may be performed either at STIHL Incorporated or at any independent test laboratory.
Warranty Work
STIHL Incorporated shall remedy warranty defects at any authorized STIHL servicing dealer or warranty station. Any such work shall be free of charge to the owner if it is determined that a warranted part is defective.
Any manufacturer-approved or equivalent replacement part may be used for any warranty maintenance or repairs on emission-related parts and must be provided without charge to the owner. STIHL Incorporated is liable for
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damages to other engine components caused by the failure of a warranted part still under warranty.
The following list specifically defines the emission-related warranted parts:
Air Filter Carburetor Fuel Pump Choke (Cold Start Enrichment
System)
Control Linkages Intake Manifold Magneto or Electronic Ignition
System (Ignition Module)
Spark Plug Catalytic Converter (if applicable) Fuel Tank Fuel Cap Fuel Line Fuel Line Fittings Clamps Fasteners
Where to make a Claim for Warranty Service
Bring the product to any authorized STIHL servicing dealer and present the signed warranty card.
Maintenance Requirements
mixture (see also instruction "Fuel"). Deviations from this recommendation regarding quality and mixing ratio of fuel and oil may require shorter maintenance intervals.
Limitations
This Emission Control Systems Warranty shall not cover any of the following:
N repair or replacement required
because of misuse, neglect or lack of required maintenance,
N repairs improperly performed or
replacements not conforming to STIHL Incorporated specifications that adversely affect performance and/or durability, and alterations or modifications not recommended or approved in writing by STIHL Incorporated,
and N replacement of parts and other
services and adjustments necessary for required maintenance at and after the first scheduled replacement point.
STIHL Incorporated California Exhaust and Evaporative Emissions Control Warranty Statement
For California only
Your Warranty Rights and Obligations
The California Air Resources Board (CARB) and STIHL Incorporated are pleased to explain the Emission Control System Warranty on your 2007 and later small off-road equipment engine.
In California, new equipment that uses small off-road engines must be designed, built, and equipped to meet the State's stringent anti-smog standards. STIHL Incorporated must warrant the emissions control system on your small off-road engine for the period listed below provided there has been no abuse, neglect or improper maintenance of your small off-road engine.
Your emissions control system may include parts such as:
Air Filter, Carburetor, Fuel Pump, Choke (Cold Start Enrichment System), Control Linkages, Intake Manifold, Magneto or Electronic Ignition System (Ignition Module), Spark Plug, Catalytic Converter (if applicable), Fuel Tank, Fuel Cap, Fuel Line, Fuel Line Fittings, Clamps, Fasteners.
The maintenance instructions in this manual are based on the application of the recommended 2-stroke fuel-oil
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Where a warrantable condition exists, STIHL Incorporated will repair your small off-road equipment engine at no cost to you including diagnosis, parts and labor.
Manufacturer’s Warranty Responsibilities
This emissions control system is warranted for two years in California. If any emissions-related part on your equipment is defective, the part will be repaired or replaced by STIHL Incorporated free of charge.
Owner’s Warranty Responsibilities
As the small off-road equipment engine owner, you are responsible for performance of the required maintenance listed in your instruction manual. STIHL Incorporated recommends that you retain all receipts covering maintenance on your small off­road equipment engine, but STIHL Incorporated cannot deny warranty solely for the lack of receipts or your failure to ensure the performance of all scheduled maintenance.
As the small off-road equipment engine owner, you should however be aware that STIHL Incorporated may deny you warranty coverage if your small off-road equipment engine or a part has failed due to abuse, neglect, or improper maintenance or unapproved modifications.
You are responsible for presenting your small off-road equipment engine to a STIHL servicing dealer as soon as the problem exists. The warranty repairs should be completed in a reasonable amount of time, not to exceed 30 days. If
you have any questions regarding your warranty rights and responsibilities, please contact a STIHL customer service representative at 1-800-467­8445 or you can write to
STIHL Inc., 536 Viking Drive, P.O. Box 2015, Virginia Beach, VA 23450-2015.
Coverage by STIHL Incorporated
STIHL Incorporated warrants to the ultimate purchaser and each subsequent purchaser that your small off-road equipment engine is designed, built and equipped, at the time of sale, to meet all applicable emission regulations.
STIHL Incorporated also warrants to the initial purchaser and each subsequent purchaser that your engine is free from defects in materials and workmanship which cause the engine to fail to conform to applicable emission regulations for a period of two years.
Defects Warranty Period
The warranty periods will begin on the date the utility equipment engine is purchased by the initial purchaser. If any emission-related part on your engine is defective, the part will be replaced by STIHL Incorporated at no cost to the owner.
Add-on or modified parts that are not exempted by CARB may not be used. The use of any non exempted add-on or modified parts will be grounds for disallowing a warranty claim. STIHL Incorporated will not be liable to warrant failures of warranted parts caused by the use of a non exempted add-on or modified part.
The warranty on emissions-related parts will be interpreted as follows:
1. Any warranted part that is not
scheduled for replacement as required maintenance in the written instructions required in the Emission Warranty Parts List (see below) must be warranted for the warranty period defined in Subsection COVERAGE BY STIHL INCORPORATED, see above. If any such part fails during the period of warranty coverage, it must be repaired or replaced by the manufacturer according to Subsection (4) below. Any such part repaired or replaced under the warranty must be warranted for the remaining warranty period.
2. Any warranted part that is
scheduled only for regular inspection in the written instructions required by the Emission Warranty Parts List (see below) must be warranted for the warranty period defined in Subsection COVERAGE BY STIHL INCORPORATED, see above. A statement in such written instructions to the effect of "repair or replace as necessary" will not reduce the period of warranty coverage. Any such part repaired or replaced under warranty must be warranted for the remaining warranty period.
3. Any warranted part that is
scheduled for replacement as required maintenance in the written instructions required by the Emission Warranty Parts List (see below) must be warranted for the period of time prior to the first scheduled replacement point for
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that part. If the part fails prior to the first scheduled replacement, the part must be repaired or replaced by the engine manufacturer according to Subsection (4) below. Any such part repaired or replaced under warranty must be warranted for the remainder of the period prior to the first scheduled replacement point for the part.
4. Repair or replacement of any
warranted part under the warranty must be performed at a warranty station at no charge to the owner.
5. Notwithstanding the provisions of
Subsection (4) above, warranty services or repairs will be provided at all manufacturer distribution centers that are authorized to service the subject engines.
6. The owner must not be charged for
diagnostic labor that leads to the determination that a warranted part is in fact defective, provided that such diagnostic work is performed at a warranty station.
Warranty Work
STIHL Incorporated shall remedy warranty defects at any authorized STIHL servicing dealer or warranty station. Any such work shall be free of charge to the owner if it is determined that a warranted part is defective. Any manufacturer approved or equivalent replacement part may be used for any warranty maintenance or repairs on emission-related parts and must be provided without charge to the owner. STIHL Incorporated is liable for
damages to other engine components caused by the failure of a warranted part still under warranty.
Emission Warranty Parts List
Air Filter, Carburetor, Fuel Pump, Choke (Cold Start Enrichment System), Control Linkages, Intake Manifold, Magneto or Electronic Ignition System (Ignition Module), Spark Plug, Catalytic Converter (if applicable), Fuel Tank, Fuel Cap, Fuel Line, Fuel Line Fittings, Clamps, Fasteners
Where to make a Claim for Warranty Service
Bring the STIHL product to any authorized STIHL servicing dealer and present the signed STIHL product registration card, or the print-out of the electronic product registration.
Limitations
The repair or replacement of any warranted part otherwise eligible for warranty coverage may be excluded from such warranty coverage if STIHL Incorporated demonstrates that the STIHL product has been abused, neglected, or improperly maintained, and that such abuse, neglect, or improper maintenance was the direct cause of the need for repair or replacement of the part. That notwithstanding, any adjustment of a component that has a factory installed, and properly operating, adjustment limiting device is still eligible for warranty coverage.
Trademarks
STIHL Registered Trademarks
®
STIHL
{ K
The color combination orange-grey (U.S. Registrations #2,821,860; #3,010,057, #3,010,058, #3,400,477; and #3,400,476)
®
4-MIX AUTOCUT EASYSTART FARM BOSS iCademy OILOMATIC STIHL Cutquik STIHL DUROMATIC STIHL Quickstop STIHL ROLLOMATIC STIHL WOOD BOSS TIMBERSPORTS WOOD BOSS YARD BOSS
®
®
®
®
®
®
®
®
®
®
®
®
®
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Some of STIHL’s Common Law Trademarks
BioPlus™ Easy2Start™ EasySpool™ ElastoStart™ Ematic™ FixCut™ HT Plus™ IntelliCarb™ Master Control Lever™ Micro™ Pro Mark™ Quad Power™ Quiet Line™ STIHL Compact™ STIHL HomeScaper Series™ STIHL Interchangeable Attachment
Series™ STIHL M-Tronic™ STIHL Magnum™ STIHL MiniBoss™ STIHL MotoPlus 4™ STIHL Multi-Cut HomeScaper Series™ STIHL OUTFITTERS™ STIHL PICCO™ STIHL PolyCut™ STIHL PowerSweep™
STIHL Precision Series™ STIHL Protech™ STIHL RAPID™ STIHL SuperCut™ STIHL Territory™ TapAction™ TrimCut™ This listing of trademarks is subject to
change. Any unauthorized use of these
trademarks without the express written consent of ANDREAS STIHL AG & Co. KG, Waiblingen is strictly prohibited.
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Contenido
español / EE.UU
Acerca de este manual de instrucciones 70
Medidas de seguridad y técnicas de manejo 71
Accesorio de corte 94 Montaje de la espada y cadena
(tensor lateral de la cadena) 95 Montaje de la espada y cadena
(tensor frontal de la cadena) 96
Manual de instrucciones originalImpreso en papel libre de cloro.
Montaje de la espada y cadena (tensor rápido de la cadena) 97
Tensado de la cadena de aserrado (tensor lateral de la cadena) 99
Tensado de la cadena de aserrado (tensor frontal de la cadena) 99
Tensado de la cadena de aserrado (tensor rápido de la cadena) 99
Revisión de tensión de la cadena 100 Combustible 100 Llenado de combustible 101 Lubricante de cadena 103 Llenado del tanque de aceite de la
cadena 104
Las tintas contienen aceites vegetales, el papel es reciclable.
Revisión de lubricación de la cadena 104
Freno de la cadena 105 Manejo durante el invierno 106 Arranque / parada del motor 106 Instrucciones para el uso 111 Cuidado de la espada 112 Sistema de filtro de aire 113 Limpieza del filtro de aire 113 Gestión del motor 114
Ajuste del carburador 114 Bujía 115 Funcionamiento del motor 117 Sustitución de la cuerda de
arranque y del resorte de rebobinado 117
Almacenamiento de la máquina 121 Revisión y sustitución del piñón de
cadena 121 Mantenimiento y afilado de la
cadena de aserrado 122 Inspección y mantenimiento por el
concesionario 127 Información para mantenimiento 128 Componentes importantes 130 Especificaciones 132 Accesorios especiales 134 Pedido de piezas de repuesto 135 Información de reparación 135 Asignación de declaraciones de
garantía de STIHL Incorporated 136 Declaración de garantía de STIHL
Incorporated sobre sistemas de control de emisiones según normas Federales 136
Declaración de garantía de STIHL Incorporated sobre el control de emisiones de gases de escape y emisiones por evaporación para el Estado de California 138
Marcas comerciales 141
Permita que solamente las personas que comprenden la materia tratada en este manual manejen su motosierra.
Para obtener el rendimiento y satisfacción máximos de la motosierra STIHL, es importante que lea, comprenda y respete las medidas de seguridad y las instrucciones de uso y mantenimiento dadas en el capítulo "Medidas de seguridad y técnicas de uso", antes de usar su motosierra. Para obtener información adicional, visite www.stihlusa.com.
Comuníquese con su representante de STIHL o el distribuidor de STIHL para su zona si no se entiende alguna de las instrucciones dadas en el presente manual.
¡Advertencia!
Dado que la motosierra es una herra­mienta para cortar madera que funciona a gran velocidad, es necesario tomar medidas especiales de seguridad igual que con cualquier sierra motorizada, para reducir el riesgo de lesiones. El uso descuidado o inadecuado puede causar lesiones graves e incluso mortales.
{
© ANDREAS STIHL AG & Co. KG, 2011
0458-208-8621-A. M55.F11.CP.
0000001880_006_EA
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Acerca de este manual de instrucciones
Pictogramas
Todos los pictogramas que se encuentran fijados o grabados en la máquina se explican en este manual.
Según el modelo, los pictogramas siguientes pueden aparecer en su máquina.
Tanque de combustible; mezcla de gasolina y aceite de motor
Depósito de aceite de cadena; aceite de cadena
Aplicación y soltado del freno de la cadena STIHL Quickstop
Sentido de rotación de la cadena
Ematic; control de canti­dad de aceite de cadena
Tensión de la cadena
Precalentamiento del aire de admisión para funcio­namiento en invierno
Aire de admisión para funcionamiento en verano
Calentador de manillar
Uso de válvula de descompresión
Uso de bomba manual de combustible
Símbolos en el texto
Muchas de las instrucciones de uso y seguridad vienen acompañadas de ilustraciones.
Los pasos individuales o procedimientos descritos en el manual pueden estar señalados en diferentes maneras:
N Se usa un punto para denotar un
paso o procedimiento.
Una descripción de un paso o procedimiento que se refiere directamente a una ilustración puede contener números de referencia que aparecen en la ilustración. Ejemplo:
N Suelte el tornillo (1). N Palanca (2) ...
Además de las instrucciones de uso, en este manual pueden encontrarse párrafos a los que usted debe prestar atención especial. Tales párrafos están marcados con los símbolos y las palabras identificadoras que se describen a continuación.
¡Peligro!
Indica un riesgo inminente de lesiones graves o mortales.
Advertencia!
Identifica una situación de peligro que, al no evitarse, puede resultar en lesio­nes graves o mortales.
¡Precaución!
Indica el riesgo de daños a la propie­dad, incluyendo a la máquina o sus componentes.
Mejoramientos técnicos
La filosofía de STIHL es mejorar continuamente todos sus productos. Como resultado de ello, periódicamente se introducen cambios de diseño y mejoras. Por lo tanto, es posible que algunos cambios, modificaciones y mejoras no se describen en este manual. Si las características de funcionamiento o la apariencia de su máquina difieren de las descritas en este manual, comuníquese con el concesionario STIHL para obtener la ayuda que requiera.
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Medidas de seguridad y técnicas de manejo
Dado que la motosierra es una herramienta de corte que funciona a gran velocidad, es necesario tomar medidas especia­les de seguridad para reducir el riesgo de lesiones.
Es importante que usted lea, comprenda bien y respete las siguientes advertencias y medidas de seguridad. Lea el manual de instrucciones y las instrucciones de seguridad periódica­mente. El uso descuidado o inadecuado puede causar lesiones graves o incluso mortales.
¡Advertencia!
Las fuerzas reactivas, incluido el contra­golpe, pueden ser peligrosas. Preste especial atención a la sección en la que se habla de las fuerzas reactivas.
Pida a su concesionario STIHL que le enseñe el manejo de la herramienta motorizada. Todas las medidas de seguridad que por lo general se toman cuando se trabaja con un hacha o sierra manual también son aplicables al manejo de las motosierras Respete todas las disposiciones, reglamentos y normas de seguridad federales, estatales y locales del caso. Por ejemplo, cuando utilice una motosierra
para cortar troncos, consulte los reglamentos de OSHA para "trabajos de aprovechamiento forestal", en la parte 29 del Código de Disposiciones Federales 1910.266.
¡Advertencia!
No preste ni alquile nunca su herra­mienta motorizada sin entregar el manual de instrucciones. Asegúrese que todas las personas que utilicen la máquina lean y comprendan la informa­ción contenida en este manual.
¡Advertencia!
El uso de esta máquina puede ser peli­groso. La cadena de aserrado tiene muchos cortadores afilados. Si los cor­tadores entran en contacto con alguna parte del cuerpo del operador, le causa­rán una herida, aunque la cadena esté detenida.
Use la motosierra solamente para cortar objetos de madera.
¡Advertencia!
No debe usarse para ningún otro propó­sito ya que el uso indebido puede resultar en lesiones personales o daños a la propiedad, incluso daños de la máquina.
¡Advertencia!
Nunca se debe permitir a los niños que usen esta herramienta motorizada. No se debe permitir la proximidad de otros, especialmente niños y animales, donde se esté utilizando la máquina.
¡Advertencia!
Para reducir el riesgo de ocasionar lesiones a las personas en la cercanía y daños a la propiedad, nunca deje la herramienta motorizada en marcha desatendida. Cuando no está en uso (por ejemplo durante el descanso), apá­guela y asegúrese de que las personas no autorizadas no puedan usarla.
La mayoría de las medidas de seguridad y avisos contenidos en este manual se refieren al uso de todas las motosierras de STIHL. Los distintos modelos pueden contar con piezas y controles diferentes. Vea la sección correspondiente de su manual de instrucciones para tener una descripción de los controles y la función de los componentes de su modelo.
El uso seguro de una motosierra atañe a
1 el operador 2 la herramienta motorizada 3 el uso de la herramienta
motorizada.
EL OPERADOR
Condición física
Usted debe estar en buenas condiciones físicas y psíquicas y no encontrarse bajo la influencia de ninguna sustancia (drogas, alcohol, etc.) que le pueda restar visibilidad, destreza o juicio. No maneje esta máquina cuando está fatigado.
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¡Advertencia!
Esté alerta. Si se cansa, tómese un des­canso. El cansancio puede provocar una pérdida del control. El uso de cual­quier herramienta motorizada es fatigoso. Si usted padece de alguna dolencia que pueda ser agravada por la fatiga, consulte a su médico antes de utilizar esta máquina.
¡Advertencia!
El uso prolongado de una herramienta motorizada (u otras máquinas) expone al operador a vibraciones que pueden provocar el fenómeno de Raynaud (dedos blancos) o el síndrome del túnel carpiano.
Estas condiciones reducen la capacidad de las manos de sentir y regular la temperatura, producen entumecimiento y ardor y pueden provocar trastornos nerviosos y circulatorios, así como necrosis de los tejidos.
No se conocen todos los factores que contribuyen a la enfermedad de Raynaud, pero se mencionan el clima frío, el fumar y las enfermedades o condiciones físicas que afectan los vasos sanguíneos y la circulación de la sangre, como asimismo los niveles altos de vibración.por períodos largos. Por lo tanto, para reducir el riesgo de la enfermedad de dedos blancos y del síndrome del túnel carpiano, sírvase notar lo siguiente:
La mayor parte de las herramientas
motorizadas de STIHL se ofrecen con un sistema antivibración ("AV") cuyo propósito es reducir la transmisión de las vibraciones
creadas por la máquina a las manos del operador. Se recomienda el uso del sistema AV a aquellas personas que utilizan herramientas motorizadas en forma constante y regular.
Use guantes y mantenga las manos
abrigadas. Para climas fríos se recomienda usar mangos calefaccionados, ofrecidos para algunos de los motores de STIHL.
Mantenga el sistema AV en buen
estado. Una herramienta motorizada con los componentes flojos o con elementos AV dañados o desgastados también tendrá tendencia a tener niveles más altos de vibración. Mantenga afilada la cadena de la sierra. Una cadena sin filo aumentará el tiempo de corte, y el presionar una cadena roma a través de la madera aumentará las vibraciones transmitidas a las manos.
Agarre firmemente los mangos en
todo momento, pero no los apriete con fuerza constante y excesiva. Tómese descansos frecuentes.
Todas las precauciones antes mencionadas no le garantizan que va a estar totalmente protegido contra la enfermedad de Raynaud o el síndrome del túnel carpiano. Por lo tanto, los operadores constantes y regulares deben revisar con frecuencia el estado de sus manos y dedos. Si aparece alguno de los síntomas arriba mencionados, consulte inmediatamente al médico.
¡Advertencia!
El sistema de encendido de la máquina STIHL produce un campo electromag­nético de intensidad muy baja. El mismo puede interferir con algunos tipos de marcapasos. Para reducir el riesgo de lesiones graves o mortales, las perso­nas portadoras de marcapasos deben consultar a sus médicos y al fabricante del marcapasos antes de usar esta máquina.
Vestimenta adecuada
¡Advertencia!
Para reducir el riesgo de lesiones el operador debe usar el equipo protector adecuado.
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La ropa debe ser de con­fección fuerte y ajustada, pero no tanto que impida la completa libertad de movimiento. Use pantalo­nes largos hechos de un material grueso para pro­tegerse las piernas contra el contacto con ramas o matorrales. Para reducir el riesgo de lesio­nes, use pantalones o perneras con almohadi­llas de material resistente a cortaduras. Evite el uso de chaquetas sueltas, bufandas, corbatas, joyas, pantalones acam­panados o con vueltas, pelo largo suelto o cual­quier cosa que pueda engancharse en las ramas, matorrales o pie­zas en movimiento de la máquina. Sujétese el pelo de modo que quede sobre los hombros.
Es muy importante tener una buena superficie de apoyo para los pies. Pón­gase botas gruesas con suela antideslizante. Recomendamos las botas de seguridad con puntera de acero
Use un casco aprobado para reducir el riesgo de lesionarse la cabeza. El ruido de la motosierra puede dañar sus oídos. Siempre use amortigua­dores del ruido (tapones u orejeras) para prote­gerse los oídos. Los usuarios constantes y regulares deben some­terse con frecuencia a un examen o control auditivo.
Esté especialmente alerta y tenga cuidado cuando se usa protectores de oídos, ya que los mismos reducen la posibilidad de oír señales de advertencia (gritos, alarmas, etc.).
Nunca use una herramienta motorizada a menos que se usen gafas de seguridad bien colocadas con protección superior y lateral adecuada, que satisfagan la norma ANSI Z 87.1 (o la norma nacional correspondiente). Para reducir el riesgo de lesionarse la cara, STIHL recomienda usar también una careta o protector facial adecuado sobre las gafas o anteojos de seguridad.
Siempre use guantes cuando manipule la máquina y la herra­mienta de corte. Los guantes gruesos y anti­deslizantes mejoran el manejo y ayudan a prote­ger las manos.
LA HERRAMIENTA MOTORIZADA
Para las ilustraciones y definiciones de los componentes de la herramienta motorizada, vea el capítulo sobre "Piezas principales".
¡Advertencia!
Nunca modifique, de ninguna manera, esta herramienta motorizada. Utilice únicamente los accesorios y repuestos suministrados por STIHL o expresa­mente autorizados por STIHL para usarse con el modelo específico de STIHL. Si bien es posible conectar a la herramienta motorizada de STIHL cier­tos accesorios no autorizados, su uso puede ser, en la práctica, extremada­mente peligroso.
Si la máquina experimenta cargas excesivas para las cuales no fue diseñada (por ejemplo, impactos severos o una caída), siempre asegúrese de que la máquina esté en buenas condiciones antes de seguir con el trabajo. Inspeccione específicamente la integridad del sistema de combustible (ausencia de fugas) y asegúrese de que los controles y dispositivos de seguridad funcionen como es debido. No siga manejando esta máquina si está dañada. En caso de dudas, pida que el concesionario de servicio de STIHL la revise.
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USO DE LA HERRAMIENTA MOTORIZADA
Transporte de la herramienta motorizada
¡Advertencia!
Para reducir el riesgo de sufrir lesiones debido al contacto con la cadena de aserrado, nunca transporte la herra­mienta motorizada con la cadena en marcha. Siempre aplique el freno de la cadena al llevar la motosierra por más de unos pocos pasos.
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Siempre apague el motor y coloque la funda sobre la cadena y la espada antes de transportar la herramienta motorizada por una distancia conside­rable. Cuando transporte la máquina en un vehículo, sujétela firmemente para impedir su vuelco, el derrame de com­bustible y el daño a la máquina.
Puede acarrearse solamente en posición horizontal. Agarre el mango delantero de una manera que mantenga la máquina equilibrada horizontalmente. Mantenga el silenciador caliente lejos de su cuerpo y el accesorio de corte detrás de usted.
Combustible
La herramienta motorizada STIHL utiliza una mezcla de aceite-gasolina como combustible (vea el capítulo "Combustible" en el manual del propietario).
¡Advertencia!
La gasolina es un com­bustible muy inflamable. Si se derrama y arde a causa de una chispa u otra fuente de ignición,
puede provocar un incendio y quemaduras graves o daños a la propiedad. Tenga sumo cuidado cuando manipule gasolina o la mezcla de combustible. No fume cerca del com­bustible o la herramienta motorizada, ni acerque ningún fuego o llama a ellos. Puede escapar vapor inflamable del sis­tema de combustible.
Instrucciones para el llenado de combustible
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Cargue de combustible su herramienta motorizada en lugares al aire libre bien ventilados. Siempre apague el motor y deje que se enfríe antes de llenar de combustible. Dependiendo del combus­tible utilizado, de las condiciones climáticas y del sistema de ventilación del tanque, es posible que se forme vapor de gasolina a presión dentro del tanque de combustible.
Para reducir el riesgo de quemaduras, así como otras lesiones corporales ocasionadas por los escapes de vapor de gasolina y otras emanaciones, quite
la tapa de llenado de combustible de la herramienta motorizada cuidadosamente de modo que la presión que se pueda haber acumulado en el tanque se disipe lentamente. Nunca quite la tapa de llenado de combustible mientras el motor esté funcionando.
Elija una superficie despejada para llenar el tanque y aléjese 3 m (10 pies) por lo menos del lugar en que lo haya llenado antes de arrancar el motor. Limpie todo el combustible derramado antes de arrancar la máquina.
¡Advertencia!
Compruebe que no exis­ten fugas de combustible mientras llena el tanque y durante el funcionamiento de la
máquina. Si detecta alguna fuga de combustible, no arran­que el motor ni lo haga funcionar sin antes reparar la fuga y limpiar el com­bustible derramado. Tenga cuidado de no mancharse la ropa con combustible. Si la mancha, cámbiesela inmediatamente.
El tipo de tapa de llenado difiere con los distintos modelos.
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Tapa sin herramientas con empuñadura
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Para reducir el riesgo de derramar com­bustible y provocar un incendio debido a una tapa de combustible mal apretada, coloque la tapa en la posición correcta y apriétela en la boca de llenado del tanque.
Para hacer esto con esta tapa STIHL, levante la empuñadura en la parte superior de la tapa hasta dejarla vertical a un ángulo de 90°. Inserte la tapa en la boca de llenado del tanque, alineando las marcas de posición en la empuñadura de la tapa y en la boca del tanque. Utilice la empuñadura para oprimir la tapa firmemente hacia abajo mientras la gira en sentido horario hasta que tope (aprox. un cuarto de vuelta).
Doble la empuñadura dejándola a ras con la parte superior de la tapa. Sujete la tapa y com­pruebe que esté bien apretada. Si la empuña­dura no queda completamente a ras con la tapa y el tope de la empuñadura no encaja en la hendidura corres­pondiente de la abertura de llenado, o si la tapa está suelta en la boca de llenado, la tapa no está debidamente asentada ni apretada y es necesario repetir los pasos previa­mente descritos.
Tapa desalineada, dañada o rota
N Si la tapa no encaja completamente
en la abertura cuando se alinean las marcas de posición y/o si la tapa no se aprieta debidamente al girarla, la base de la tapa puede haber girado prematuramente (con relación a la parte superior) hasta la posición cerrada. Tal desalineación puede ser resultado de la manipulación, limpieza o un intento incorrecto de apriete.
A izquierd
Base de la tapa en posición cerrada (con espacio vacío)
a: A
derecha:
Base de la tapa correcta­mente colocada para la instalación
N Para volver a colocar la tapa en
posición abierta para instalarla, gírela (con la empuñadura hacia arriba) hasta que caiga completamente en la abertura del tanque. A continuación, gire la tapa en sentido contrahorario hasta que tope (aprox. 1/4 de vuelta) – esto gira la base de la tapa a la posición correcta. Luego gire la tapa en sentido horario, cerrándola de modo normal.
N Si aún no es posible apretar la tapa
de modo debido, la misma podría estar averiada o rota; ponga la máquina fuera de servicio de
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inmediato y llévela a un concesionario STIHL autorizado para repararla.
Tapa roscada
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Las vibraciones de la máquina pueden aflojar una tapa de combustible que ha quedado mal apretada, o simplemente
soltarla y derramar com­bustible. Para reducir el riesgo de derrames e incendio, apriete la tapa de llenado de combustible a mano tan fir­memente como sea posible.
Para apretar las tapas con ranuras, se puede usar el extremo de destornillador de la llave combinada de STIHL u otra herramienta similar.
Consulte también el capítulo "Combustible" del Manual de instrucciones para obtener información adicional.
Antes de arrancar
Quite el protector de la cadena (la funda) e inspeccione la motosierra para verificar que está en buenas condiciones de funcionamiento. (Consulte la tabla de mantenimiento cerca del final de este manual de instrucciones.)
¡Advertencia!
Siempre revise la herramienta motori­zada para comprobar que está en buenas condiciones y que funciona correctamente antes de arrancarla, en particular el gatillo de aceleración y su bloqueo, el interruptor de parada y la herramienta de corte. El gatillo de ace­leración debe moverse libremente y siempre debe regresar a la posición de marcha en vacío por la acción de resorte. Nunca intente modificar los controles o los dispositivos de seguridad.
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No maneje nunca una herramienta motorizada que esté dañada, mal ajus­tada o mantenida o que no fue armada completa y debidamente.
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Asegúrese de que el casquillo de la bujía esté firmemente colocado – un casquillo suelto puede crear un arco voltaico y encender los vapores del combustible, provocando un incendio.
Para el armado de la espada y la cadena, siga el procedimiento descrito en el capítulo "Montaje de la espada y la cadena" del manual de instrucciones. La cadena Oilomatic, la espada y la rueda dentada STIHL deben coincidir entre sí en cuanto a calibre y paso. Antes de cambiar la espada y la cadena, consulte el capítulo "Especificaciones" en el manual de instrucciones y la sección "Contragolpe" y la "norma ANSI B 175.1-2000 relativa a contragolpes de las motosierras" más abajo.
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La tensión adecuada de la cadena es extremadamente importante. Para evi­tar el ajuste inadecuado, ejecute los procedimientos de tensado tal como se describen en su manual. Para fijar la espada en su lugar, siempre asegúrese que la tuerca o tuercas hexagonales para la cubierta del piñón quedan firme­mente apretadas después de tensar la cadena. Nunca arranque la sierra mien­tras la cubierta del piñón está suelta. Compruebe la tensión de la cadena una vez más después de apretar la tuerca o tuercas y de allí en adelante en interva­los regulares (cada vez que se apague la sierra). Si durante el corte la cadena llega a aflojarse, apague el motor y ajuste la tensión. ¡Nunca trate de ajus­tar la cadena mientras el motor está funcionando!
Mantenga los mangos limpios y secos en todo momento; es particularmente importante mantenerlos libres de humedad, aceite, combustible, grasa o resinas para garantizar que la máquina pueda empuñarse firmemente para mantenerla bajo control seguro.
Arranque
¡Advertencia!
Para reducir la posibilidad de incendios y lesiones por quemaduras, arranque el motor al aire libre, por lo menos 3 m (10 pies) del lugar en que lo haya llenado.
Ponga en marcha y maneje su motosierra sin ayuda de nadie. Para las instrucciones específicas de arranque, vea la sección correspondiente del
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manual de instrucciones. Los métodos correctos de arranque reducen el riesgo de sufrir lesiones.
¡Advertencia!
Para reducir el riesgo de sufrir lesiones debido a las fuerzas de reacción y / o al contacto con la cadena de aserrado, aplique el freno de la cadena antes de arrancar la motosierra.
¡Advertencia!
Nunca arranque el motor por lanza­miento de la máquina. Este método es muy peligroso porque usted puede per­der el control de la motosierra.
Hay dos métodos recomendados para arrancar la motosierra.
Con el primermétodo recomendado, la motosierra se arranca apoyada en el suelo. Asegúrese que el freno de la cadena esté aplicado (vea el capítulo "Freno de la cadena" en el manual de instrucciones) y apoye la motosierra sobre terreno firme u otra superficie sólida en un lugar abierto. Mantenga el equilibrio y elija un buen punto de apoyo para los pies.
Agarre el mango delantero firmemente con la mano izquierda y haga presión hacia abajo. Para las sierras con mango
trasero que queda a nivel del suelo, ponga la punta del pie derecho dentro del mango trasero y haga presión hacia abajo. Con la mano derecha tire lentamente del mango de arranque hasta que sienta una resistencia definitiva y en seguida dele un tirón fuerte y rápido.
El segundométodo recomendado para arrancar la motosierra le permite hacerlo sin colocarla en el suelo. Asegúrese que el freno de la cadena esté aplicado, sujete la manija delantera de la motosierra firmemente con la mano izquierda. Mantenga el brazo sobre el mango delantero en posición firme (recta). Sujete el mango trasero de la motosierra bien apretado entre las piernas un poco más arriba de las rodillas. Mantenga el equilibrio y elija un buen punto de apoyo para los pies. Con la mano derecha tire lentamente del mango de arranque hasta que sienta una resistencia definitiva y en seguida dele un tirón fuerte y rápido.
¡Advertencia!
Asegúrese que la espada y la cadena estén alejadas de su persona y de las demás obstrucciones y objetos, inclu­yendo el suelo. Después de arrancar, la velocidad del motor con el bloqueo de aceleración de arranque activado será lo suficientemente rápida para que el embrague engrane el piñón y, si el freno de la cadena no está activado, hará que gire la cadena. Si el cuadrante superior de la punta de la espada choca contra algún objeto, se puede producir un con­tragolpe (vea la sección sobre fuerzas reactivas). Para reducir el riesgo, siem­pre active el freno de la cadena antes de arrancar el motor. Nunca intente arrancar la motosierra mientras la espada está dentro de una ranura de corte o entalla.
Tan pronto arranque, accione inmediatamente por un breve momento el gatillo de aceleración para desconectarlo de la posición de arranque y permitir que la velocidad del motor se reduzca al valor de marcha en vacío.
¡Advertencia!
Cuando tire del mango de arranque, no enrolle la cuerda de arranque alrededor de la mano. No deje que el mango retro­ceda bruscamente, sino guíe la cuerda de arranque para que se enrolle debida­mente. Si no ejecuta este procedimiento puede lastimarse la mano o los dedos y también dañar el mecanismo de arranque.
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Ajustes importantes
¡Advertencia!
Para reducir el riesgo de lesiones per­sonales debido a la pérdida de control y / o al contacto con la herramienta de corte en movimiento, no use una máquina cuyo régimen de marcha en vacío está mal regulado. Cuando el ralentí está correctamente regulado, la herramienta de corte no debe moverse. Para instrucciones acerca de cómo ajustar el régimen de marcha en vacío, vea la sección correspondiente del manual de instrucciones.
Si no puede regular correctamente el ralentí, pida a su concesionario STIHL que revise la herramienta motorizada y haga los ajustes o reparaciones correspondientes.
Durante el trabajo Sujeción y control de la herramienta
motorizada
Al trabajar, siempre sujete la máquina firmemente con ambas manos en los mangos. Cierre firmemente los dedos y pulgares sobre los mangos.
amortiguar mejor las fuerzas de empuje y tirones, así como las fuerzas de contragolpe de la sierra, sin perder el control (vea la sección sobre fuerzas reactivas).
¡Advertencia!
Para reducir el riesgo de lesiones graves o mortales para usted o los
espectadores debido a la pérdida de control, nunca maneje la sierra con una sola mano. Es más difícil controlar las fuerzas reacti­vas y evitar el patinaje o rebote de la espada y la cadena sobre la rama o tronco. Incluso en el caso de sierras compactas diseñadas para usarse en espacios estrechos, el manejo con una sola mano es peligroso porque el opera­dor puede perder el control de la máquina.
¡Advertencia!
Para reducir el riesgo de lesionarse, mantenga las manos y los pies alejados de la herramienta de corte. No toque nunca con las manos ni con cualquier parte del cuerpo una herramienta de corte en movimiento.
¡Advertencia!
Mantenga los pies bien apoyados y equilibrados en todo momento. Se debe tener cuidado especial cuando las con­diciones del suelo son resbaladizas (suelo húmedo, nieve) y en terreno difí­cil y con mucha vegetación. Para evitar tropezarse, esté atento a los obstáculos ocultos tales como tocones, raíces, hoyos y zanjas. Existe un peligro mayor de resbalarse en los troncos recién des­cortezados. Para obtener un punto de apoyo seguro, quite las ramas caídas, los matorrales y el material cortado. Sea sumamente precavido cuando trabaje en declives o terreno irregular.
¡Advertencia!
Proceda con sumo cuidado cuando tra­baje en condiciones climáticas húmedas o frías (lluvia, nieve, hielo). Interrumpa el trabajo cuando hay condi­ciones de mucho viento, tormenta o lluvia intensa.
La mano derecha debe sujetar el mango trasero. Esto también corresponde a personas zurdas. Con las manos en esta posición, puede oponer y
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¡Advertencia!
Si bien es necesario mantener los terce­ros lejos de la motosierra en marcha, nunca trabaje solo. Manténgase a una distancia que le permita comunicarse con otras personas en caso de necesi­tar ayuda.
¡Advertencia!
Para reducir el riesgo de lesiones cau­sadas por la pérdida del control, nunca trabaje sobre una escalera o cualquier otra superficie de soporte poco seguro. Nunca mantenga la máquina a una altura más arriba de los hombros. No trate de alcanzar más lejos de lo debido.
¡Advertencia!
Nunca trabaje en un árbol a menos que tenga la capacitación profesional para ese tipo de trabajo, disponga de la seguridad adecuada (tal como un sis­tema de aparejos y correas o una plataforma aérea de trabajo), tenga las dos manos libres para manejar la moto­sierra en un espacio estrecho y haya tomado las medidas de precaución para evitar ser lesionado por las ramas que caen.
Coloque la motosierra en una posición tal que el cuerpo esté lejos del accesorio de corte cuando el motor está funcionando. Sitúese a la izquierda del corte mientras está tronzando.
Nunca ejerza presión sobre la sierra cuando llegue al final del corte. La presión puede hacer que la espada y la cadena en movimiento salten fuera de la ranura de corte o entalla, perdiéndose el control y golpeando al operador o algún otro objeto. Si la cadena en movimiento golpea contra otro objeto, una fuerza reactiva puede hacer que la cadena golpee al operador.
Condiciones de trabajo
Maneje y arranque su herramienta motorizada solamente al aire libre en un lugar bien ventilado. Manéjela solamente en condiciones de buena visibilidad y a la luz del día. Trabaje con mucho cuidado.
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La motosierra es una máquina para una sola persona. No deje que otras perso­nas estén en el lugar de trabajo, aun durante el arranque. Apague el motor inmediatamente si se le aproxima alguna persona.
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Tan pronto arranca, este producto genera vapores de escape tóxicos que contienen productos quí­micos (tales como
hidrocarburos sin que­mar y monóxido del carbono, incluyendo el benceno) considerados como causantes de enfermedades res­piratorias, cáncer, defectos de nacimiento u otra toxicidad reproduc­tora. Algunos de estos gases (por ej., monóxido de carbono) pueden ser inco­loros e inodoros. Para reducir el riesgo de sufrir lesiones graves o mortales por respirar gases tóxicos, nunca haga fun­cionar la máquina puertas adentro o en lugares mal ventilados. Si debido a la falta de ventilación adecuada los gases de escape se concentran, elimine los obstáculos de la zona de trabajo para obtener ventilación adecuada antes de proceder y/o tome descansos frecuen­tes para permitir la disipación de los gases antes de que se puedan concentrarse.
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¡Advertencia!
La inhalación de ciertos polvos, espe­cialmente los polvos orgánicos, tales como el moho o polen, puede provocar reacciones alérgicas o asmáticas en las personas sensibles. La inhalación repe­tida o de grandes cantidades de polvo u otros contaminantes del aire, especial­mente los de partículas pequeñas puede causar enfermedades respirato­rias o de otro tipo. Esto incluye el polvo, especialmente de las maderas duras, pero también de algunas maderas blan­das, tales como el cedro rojo occidental. Controle el polvo en su fuente, siempre que sea posible. Utilice buenas prácti­cas de trabajo, tal como siempre cortar con una cadena bien afilada (que pro­duce virutas de madera en vez de polvo fino) y trabajar de manera que el viento o el proceso de corte dirige el polvo pro­ducido por la herramienta motorizado en sentido opuesto del operador. Observe las recomendaciones emitidas por EPA/OSHA/NIOSH y las asociacio­nes de trabajo y los sindicatos con respecto al polvo ("materia particu­lada"). Cuando sea imposible eliminar significativamente la inhalación del polvo, es decir mantener el nivel cerca del valor ambiente, el operador y las personas que se encuentren en la cer­canía siempre deberán usar un respirador aprobado por NIOSH/MSHA para el tipo de polvo presente en el lugar.
¡Advertencia!
La aspiración del polvo de asbesto es peligrosa y puede causar lesiones gra­ves o mortales, enfermedades de las vías respiratorias o cáncer. El uso y la eliminación de los productos que contie­nen asbesto están estrictamente reglamentados por OSHA y el Orga­nismo para la Protección del Medio Ambiente (EPA) de los EE.UU. Si por cualquier motivo cree que está cortando asbesto, póngase en contacto inmedia­tamente con su empleador o un representante de OSHA local.
Instrucciones de manejo
¡Advertencia!
No maneje la herramienta motorizada usando el bloqueo de acelerador para arranque, pues no tendrá control de la velocidad del motor.
En caso de emergencia, apague el motor inmediatamente – mueva el control deslizante / interruptor de parada a 0 o STOP
¡Advertencia!
Siempre apague el motor antes de apo­yar la motosierra en el suelo.
¡Advertencia!
La cadena de aserrado sigue en mar­cha por un rato después que se suelta el gatillo de aceleración (efecto de volante).
Al aumentar la velocidad del motor con la cadena de aserrado bloqueada se aumenta la carga y se provoca el
patinaje continuo del embrague. Esto puede ocurrir si se acciona el acelerador por más de unos pocos segundos con la cadena aprisionada en la ranura de corte o cuando el freno de la cadena está aplicado. Esto puede causar sobrecalentamiento y daño de los componentes importantes (por ejemplo, el embrague y las piezas de plástico polimérico de la caja) – lo que a su vez aumenta el riesgo de lesiones causadas por el movimiento de la cadena de sierra cuando el motor está a velocidad de marcha en vacío.
¡Advertencia!
Su motosierra está equipada con un gancho retenedor para la cadena. Está diseñado para reducir el riesgo de lesio­nes personales en el caso de que la cadena se desprenda o corte. De vez en cuando el gancho puede dañarse o salirse. Para reducir el riesgo de lesio­nes personales, no maneje la motosierra si el gancho de la cadena está dañado o se ha perdido.
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¡Advertencia!
Inspeccione los elementos antivibración periódicamente. Sustituya de inmediato los que estén dañados, rotos o muy desgastados, ya que pueden causar la pérdida del control de la sierra. Si usted siente una "esponjosidad" en la sierra, aumento de la vibración o de tendencia al "hundimiento" durante el manejo nor­mal, puede indicar algún daño, rotura o exceso de desgaste. Los elementos antivibración siempre deben sustituirse en juegos. Ante cualquier duda acerca de la sustitución de los elementos anti­vibración, consulte a su concesionario de servicio STIHL.
¡Advertencia!
La motosierra no está diseñada para ser utilizada como palanca o pala en las ramas, raíces u otros objetos. El chocar contra este tipo de objetos puede dañar el accesorio de corte o el sistema AV.
¡Advertencia!
Mientras está cortando con la sierra, asegúrese que la cadena no toque nin­guna materia extraña como por ejemplo rocas, cercas, clavos y cosas por el estilo. Estos objetos pueden salir lanza­dos al aire y dañar la cadena de la sierra o hacer que ésta retroceda o rebote.
¡Advertencia!
Nunca modifique el silenciador. La modificación del silenciador podría cau­sar el aumento del calor irradiado, de las chispas y del nivel de ruido, lo que aumentará el riesgo de incendios, lesio­nes por quemadura o la pérdida auditiva. Además, se podría dañar per­manentemente el motor. Haga reparar el silenciador únicamente por el conce­sionario de servicio STIHL.
¡Advertencia!
El silenciador y otros componentes del motor (por ej., aletas del cilindro, bujía) se calientan durante el funcionamiento y permanecen calientes por un buen rato después de apagar el motor. Para reducir el riesgo de quemaduras, no toque el silenciador ni los otros compo­nentes mientras están calientes. Mantenga limpia la zona alrededor del silenciador. Quite el lubricante excesivo y toda la basura tal como las agujas de pinos, ramas u hojas. Deje que el motor se enfríe apoyado sobre una superficie de hormigón, metal, suelo raso o madera maciza (por ej., el tronco de un árbol caído) lejos de cualquier sustancia combustible.
¡Advertencia!
Una caja de cilindro dañada o mal insta­lada, o una envuelta del silenciador dañada o deformada, puede perjudicar el proceso de enfriamiento del silencia­dor. Para reducir el riesgo de incendio o lesiones por quemadura, no continúe trabajando con una caja de cilindro dañada o mal instalada, o una envuelta del silenciador dañada o deformada.
El silenciador tiene un chispero diseñado para reducir el riesgo de incendio debido a la emisión de partículas calientes. Nunca haga funcionar la unidad sin tener instalado el chispero. Si la mezcla de gasolina y aceite está correcta (no es demasiado rica), en condiciones normales el chispero quedará limpio como resultado del calor del silenciador y no necesitará servicio ni mantenimiento. Si el rendimiento de su máquina comienza a disminuir y sospecha que las rejillas están obstruidas, haga reparar el silenciador por un concesionario de servicio STIHL. Para ciertas aplicaciones, las leyes o los reglamentos estatales o federales pueden requerir el uso de un chispero en buenas condiciones. Consulte la sección "Mantenimiento, Reparación y Almacenamiento" de estas Medidas de seguridad. Recuerde que el riesgo de incendios de matorrales o forestales es mayor durante las estaciones calurosas y secas.
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
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español / EE.UU
001BA093 LÄ
001BA035 KN
¡Advertencia!
Algunas herramientas motorizadas STIHL están equipadas con un con­vertidor catalítico, el que está diseñado para redu-
cir las emisiones de escape del motor mediante un proceso químico en el silenciador. Debido a este proceso, el silenciador no se enfría tan rápidamente como los del tipo conven­cional cuando el motor regresa a marcha en vacío o es apagado. Para reducir el riesgo de incendios y lesiones por quemadura al usar un convertidor catalítico, apoye siempre su herra­mienta motorizada en posición vertical y no la coloque nunca donde el silencia­dor quede cerca de material seco como por ejemplo matorrales, pasto, virutas de madera u otros materiales combusti­bles mientras todavía está caliente.
Fuerzas reactivas, incluido el contragolpe
¡Advertencia!
Las fuerzas reactivas pueden ocurrir en cualquier momento mientras la cadena está girando. Las fuerzas reactivas pue­den causar lesiones graves.
La gran fuerza utilizada para cortar madera puede cambiar de sentido y actuar contra el operador. Si una cadena en movimiento se detiene repentinamente al tocar un objeto sólido como por ejemplo un tronco o rama, o bien queda aprisionada, pueden presentarse de inmediato las fuerzas reactivas. Esas fuerzas reactivas pueden causar la pérdida del control, lo que a su vez puede causar lesiones graves o mortales. Una buena comprensión de las causas de estas fuerzas reactivas puede ayudarle a evitar el elemento de sorpresa y la pérdida del control. Las sorpresas repentinas contribuyen a los accidentes.
Las fuerzas reactivas más comunes son:
contragolpe, rechazo, tirón. Contragolpe:
El contragolpe puede ocurrir cuando la cadena en movimiento cerca del cuadrante superior de la punta de la espada toca un objeto sólido o queda aprisionada.
La reacción de la fuerza de corte de la cadena causa una fuerza de rotación en la motosierra en sentido contrario al movimiento de la cadena. Esto puede lanzar repentinamente la espada hacia arriba y hacia atrás describiendo un arco descontrolado, principalmente en el plano de la espada. En algunas circunstancias de corte, la espada se desplaza hacia el operador causándole lesiones graves o mortales.
Puede ocurrir un contragolpe, por ejemplo,cuando la cadena cerca del cuadrante superior de la punta de la espada choca contra la madera o queda aprisionada al cortar una rama, o si se la usa incorrectamente al comenzar a penetrar o avanzar en el corte.
Cuanto mayor la fuerza de la reacción de rebote, tanto más difícil para el operador controlar la sierra. Son muchos los factores que afectan la producción de contragolpes, así como su intensidad. Estos incluyen la
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velocidad de la cadena, la velocidad a la que la espada y la cadena tocan el objeto, el ángulo de contacto, la condición de la cadena y otros factores.
El tipo de espada y de cadena de la sierra es un factor importante en la ocurrencia y la fuerza del contragolpe. Algunos tipos de cadenas y espadas de STIHL están diseñados para reducir las fuerzas de contragolpe. STIHL recomienda el uso de espadas de contragolpe reducido y cadenas de bajo contragolpe.
Norma ANSI B 175.1-2000 relativa al contragolpe de las motosierras
La sección 5.11 de la norma ANSI B 175.1-2000 establece ciertos criterios de comportamiento y diseño con respecto al contragolpe de las motosierras.
Para cumplir con lo estipulado en la sección 5.11 de la norma ANSI B 175.1­2000:
a) las sierras con una cilindrada
inferior a 62 cm³ (3,8 pulg³)
deben tener, en su condición
original, un ángulo de contragolpe de 45° calculado por computadora cuando están equipadas con ciertos accesorios de corte,
y deben tener por lo menos dos
dispositivos para reducir el riesgo de lesiones por contragolpe, tales como un freno de la cadena, cadena de bajo contragolpe, espada de contragolpe reducido, etc.
b) las sierras con una cilindrada de
62 cm³ (3,8 pulg³) y más
deben tener por lo menos un
dispositivo para reducir el riesgo de lesiones por contragolpe, tal como un freno de la cadena, cadena de bajo contragolpe leve, espada de contragolpe reducido, etc.
Los ángulos calculados por computadora para las sierras con cilindrada inferior a 62 cm³ (3,8 pulg³) se miden aplicando un programa informático para probar los resultados de una máquina experimental de contragolpes.
¡Advertencia!
Los ángulos calculados por computa­dora indicados en la sección 5.11 de la norma ANSI B 175.1-2000 pueden no tener ninguna relación con los ángulos reales de rotación de contragolpe de la espada que pueden ocurrir en situacio­nes reales de corte.
Además, las características diseñadas para reducir la posibilidad de lesiones causadas por contragolpes pueden perder algo de su eficiencia cuando no están en sus condiciones originales, especialmente si no han sido mantenidas correctamente. El cumplimiento de la sección 5.11 de la norma ANSI B 175.1-2000 no significa automáticamente que en el caso real de contragolpe la espada y la cadena girarán en un ángulo no mayor que 45°.
¡Advertencia!
Para que los motores con una cilindrada inferior a 62 cm³ (3,8 pulg³) cumplan con los requisitos de ángulo calculado por computadora de contragolpe indica­dos en la sección 5.11 de la norma ANSI B 175.1-2000, se deben utilizar únicamente los accesorios de corte siguientes:
las combinaciones de espadas y
cadenas que aparecen en la sección "Especificaciones" del manual de instrucciones u
otras combinaciones de espadas y
cadenas de repuesto marcadas de acuerdo con la norma para usarse con el motor o
una cadena de repuesto designada
como "cadena de aserrado de bajo contragolpe".
Consulte la sección sobre "Cadena de aserrado de bajo contragolpe y espadas de contragolpe reducido"
Dispositivos para reducir el riesgo de lesiones por contragolpe
STIHL recomienda el uso del freno rápido de cadena Quickstop STIHL en las motosierras con espadas de contragolpe reducido y cadenas de bajo contragolpe con etiquetas verdes.
¡Advertencia!
Para reducir el riesgo de lesionarse, no usar la motosierra si el freno de la cadena no funciona correctamente. Lleve la motosierra a un centro de servi­cio de STIHL en su localidad. No use la sierra hasta haber corregido la avería.
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
83
español / EE.UU
001BA174 KN
Freno rápido de la cadena Quickstop de STIHL
STIHL ha desarrollado un sistema de parada de la cadena para reducir el riesgo de lesiones en ciertas situaciones de contragolpe. Se llama freno rápido de la cadena Quickstop.
Todas las motosierras STIHL están provistas de un freno de cadena Quickstop que puede activarse por inercia. Si las fuerzas de contragolpe son suficientemente altas, el protector de mano se acelera hacia la punta de la espada aun sin contacto con la mano. Vea el capítulo titulado "Freno de la cadena" en el manual de instrucciones.
¡Advertencia!
Nunca maneje la motosierra sin tener instalado el protector delantero de la mano. En una situación de contragolpe este protector ayuda a proteger la mano izquierda y otras partes del cuerpo. Además, al quitar el protector de la mano en una sierra equipada con freno de la cadena Quikstop éste quedará desactivado.
¡Advertencia!
Ni el freno Quickstop ni ningún otro dis­positivo de freno de la cadena impide el contragolpe. Estos dispositivos están diseñados para reducir el riesgo de lesiones por contragolpe, si se activan, en ciertas situaciones de contragolpe. Para que el freno Quickstop reduzca el riesgo de lesiones por contragolpe, debe estar bien cuidado y en buenas condiciones de funcionamiento. Vea el capítulo del manual de instrucciones intitulado "Freno de la cadena" y la sec­ción "Mantenimiento, reparación y almacenamiento" al final de estas pre­cauciones de seguridad. Además, debe haber distancia suficiente entre la espada y el operador para que el freno Quickstop tenga tiempo suficiente para activarse y detener la cadena antes del posible contacto con el operador.
¡Advertencia!
Un freno de la cadena mal cuidado puede aumentar el tiempo necesario para detener la cadena después de la activación, o simplemente puede no activarse.
¡Advertencia!
Nunca maneje la motosierra sobre la velocidad de marcha en vacío durante más de 3 segundos cuando el freno de la cadena está activado, o si la cadena está aprisionada o atrapada de otra manera en la ranura de corte. El pati­naje del embrague puede causar calor excesivo, con el consiguiente daño de la caja del motor, embrague y compo­nente lubricador, y puede obstaculizar el funcionamiento del freno de la cadena. Si el embrague ha patinado por más de 3 segundos, deje que la caja del motor se enfríe antes de proceder, y pruebe el funcionamiento del freno de la cadena tal como se describe en el capí­tulo "freno de la cadena" del manual de instrucciones. Asegúrese también que la cadena no gira a la velocidad de mar­cha en vacío (vea las instrucciones anteriores "Ajustes importantes").
Cadena de aserrado de bajo contragolpe y espadas de contragolpe reducido
STIHL ofrece una variedad de espadas y cadenas. Las espadas de contragolpe reducido y las cadenas de bajo contragolpe de STIHL están diseñadas para reducir el riesgo de lesiones causadas por contragolpe. Otras cadenas están diseñadas para obtener un rendimiento de corte mayor o para facilitar el afilado, pero pueden producir una mayor tendencia a los contragolpes.
STIHL desarrolló un sistema de codificación por color para ayudar a identificar las espadas de contragolpe reducido y las cadenas de bajo contragolpe. Los accesorios de corte con etiquetas de aviso verdes o
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MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
español / EE.UU
etiquetas de color verde en el empaquetado están diseñados para reducir el riesgo de lesiones por contragolpe. Al combinar motores dotados de etiquetas verdes con una cilindrada inferior a 62 cm³ (3,8 pulg³) con espadas y cadenas con etiquetas verdes se cumple con los requerimientos de ángulo de contragolpe calculado por computadora estipulados en la norma ANSI B 175.1­2000, cuando los productos se encuentran en su condición original. Los productos con etiquetas amarillas son para los usuarios que tienen necesidades de corte extraordinarias, además de experiencia y capacitación especializada para hacer frente a los contragolpes.
STIHL recomienda el uso de sus espadas de contragolpe reducido de etiqueta verde, cadenas de bajo contragolpe con etiqueta verde y un freno rápido de cadena Quickstop STIHL, tanto para los usuarios con experiencia como para aquéllos que carezcan de ella en la utilización de motosierras.
Sírvase pedir a su concesionario STIHL que le proporcione la combinación apropiada de espada / cadena para el motor de su motosierra, con el fin de reducir las lesiones por contragolpe. Las espadas y cadenas con etiquetas verdes se recomiendan para todas las motosierras.
¡Advertencia!
El uso de otras combinaciones de espa­das / cadenas no indicadas puede aumentar las fuerzas de contragolpe y como consecuencia el riesgo de lesio­nes por contragolpe. Existe la posibilidad de que después de la publi­cación de esta información se desarrollen nuevas combinaciones de espadas y cadenas, las que, en combi­nación con ciertos motores, cumplirán con lo estipulado en § 5.11 de la norma ANSI B 175.1-2000. Consulte a su con­cesionario STIHL sobre dichas combinaciones.
¡Advertencia!
Las espadas de contragolpe reducido y las cadenas de bajo contragolpe no impiden el contragolpe, sino están dise­ñadas para reducir el riesgo de lesiones por contragolpe. Las puede adquirir a través de su concesionario STIHL.
¡Advertencia!
Aunque su sierra esté equipada con un Quickstop, una espada de contragolpe reducido y / o una cadena de bajo con­tragolpe, eso no elimina el riesgo de lesionarse por contragolpe. Por lo tanto, respete siempre todas las medidas de seguridad para evitar situaciones de contragolpe.
Cadena de bajo contragolpe
Algunos tipos cadenas de aserrado tienen componentes especialmente diseñados para reducir la fuerza de
contragolpe al contacto de la punta. STIHL ha desarrollado una cadena de bajo contragolpe para su motosierra.
Una "cadena de bajo contragolpe" es una cadena que satisface los requerimientos de funcionamiento referentes al contragolpe estipulados en la § 5.11.2.4 de la norma ANSI B 175.1­2000 (requerimientos de seguridad para las motosierras de gasolina) cuando se prueba en un grupo representativo de motosierras con cilindrada inferior a 62 cm³ (3,8 pulg³), como se especifica en la norma ANSI B 175.1-2000.
¡Advertencia!
Existen combinaciones posibles de motor y espada con las que se puede usar cadenas de aserrado de bajo con­tragolpe y que no han sido específicamente certificadas como satisfactorias con respecto al ángulo de contragolpe de 45° calculado por com­putadora indicado en la sección 5.11 de la norma ANSI B 175.1-2000. Algunas cadenas de bajo contragolpe no han sido probadas con todas las combina­ciones de motor y espada posibles.
¡Advertencia!
Una cadena roma o mal afilada puede reducir o anular los efectos de las características del diseño que deben reducir la fuerza de contragolpe. Una reducción o afilado incorrecto de los calibradores de profundidad o la altera­ción de la forma de las cuchillas puede aumentar la posibilidad y la fuerza potencial de un contragolpe. Siempre corte con una cadena bien afilada.
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
85
español / EE.UU
001BA037 KN
A
Espadas de contragolpe reducido
Las espadas de contragolpe reducido STIHL con etiqueta verde están diseñadas para reducir el riesgo de lesiones por contragolpe cuando se usan con las cadenas de bajo contragolpe STIHL con etiqueta verde.
¡Advertencia!
Cuando se usan con otras cadenas más agresivas, estas espadas pueden ser menos eficaces en reducir el contragolpe.
¡Advertencia!
Para tener una motosierra debidamente equilibrada y cumplir con los requisitos de la sección 5.12.1 de la norma ANSI B 175.1-2000, utilice exclusivamente espadas con las longitudes indicadas en el capítulo de especificaciones del manual de instrucciones para el motor de su motosierra.
Guías en forma de arco
¡Advertencia!
No instale una guía en forma de arco en ninguna de las motosierras de STIHL. Toda motosierra equipada con una guía en forma de arco es potencialmente una herramienta muy peligrosa. El riesgo de contragolpe aumenta con una guía en forma de arco debido a la mayor super­ficie de contacto de contragolpe. Cuando se usa una guía en forma de arco, la cadena de bajo contragolpe no reducirá significativamente el riesgo de lesiones por contragolpe.
Para evitar el contragolpe
La mejor protección contra lesiones personales como resultado de un contragolpe es evitar las situaciones de contragolpe:
1. Sujete la motosierra firmemente
con ambas manos. No la suelte.
2. Sea consciente de la ubicación de
la punta de la espada en todo momento.
3. Nunca deje que la punta de la
espada haga contacto con ningún objeto. No corte ramas con la punta de la espada. Preste especial atención al trabajar cerca de vallas de alambre y cuando corte ramas pequeñas y duras, matorrales pequeños y arbolitos que pueden fácilmente quedar enredados en la cadena.
4. No extienda los brazos más allá de
lo necesario.
5. No corte más arriba de la altura de
los hombros.
6. Empiece a cortar y continúe
trabajando a máxima aceleración.
7. Corte solamente un tronco a la vez.
8. Tenga sumo cuidado cuando
vuelva a entrar a un corte previamente iniciado.
9. No intente cortar por penetración de
la sierra si no tiene experiencia en ese tipo de corte.
10. Esté alerta al desplazamiento del
tronco o a otras fuerzas que puedan causar el cierre del corte y el aprisionamiento de la cadena.
11. Cuide bien la cadena de la sierra.
Siempre corte con una cadena bien afilada y correctamente tensada.
12. Sitúese a un lado de la trayectoria
de corte de la motosierra.
A = Tirón
El tirón ocurre cuando la cadena en la parte inferior de la espada se detiene repentinamente cuando queda aprisionada, retenida o choca con algún objeto extraño en la madera. Como reacción, la cadena tira de la sierra hacia adelante haciendo que el operador pierda el control de la máquina.
El tirón frecuentemente ocurre cuando la púa de tope de la sierra no está firmemente sujeta contra el árbol o rama, y cuando la cadena no está girando a velocidad máxima antes de hacer contacto con la madera.
¡Advertencia!
Tenga sumo cuidado cuando corte arbolitos y matorrales pequeños que pueden enredarse fácilmente en la cadena, ser lanzados contra usted o hacerle perder el equilibrio.
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MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
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001BA038 KN
B
001BA088 LÄ
2
/
1
2
1 1
/
1
2
Para evitar los tirones
1. Siempre empiece el corte con la
cadena girando a velocidad máxima y la púa de tope en contacto con la madera.
2. El tirón también se puede reducir
colocando cuñas para abrir la entalla o el corte.
B = Rechazo
El rechazo ocurre cuando la cadena en la parte superior de la espada se detiene repentinamente cuando queda aprisionada, retenida o choca con algún objeto extraño en la madera. Como reacción, la cadena impulsa repentinamente la sierra hacia atrás contra el operador y puede causar la pérdida del control de la sierra. El rechazo frecuentemente ocurre cuando se utiliza la parte superior de la espada para hacer los cortes.
Para evitar el rechazo
1. Esté alerta a las fuerzas o
situaciones que pueden permitir que el material aprisione la parte superior de la cadena.
2. No corte más de un tronco a la vez.
3. No tuerza la sierra cuando retire la
espada de un corte con penetración o un corte por debajo, porque la cadena puede quedar aprisionada.
Técnicas de corte Tala
La tala consiste en cortar un árbol hasta que caiga.
Antes de talar, estudie cuidadosamente todas las condiciones que pueden afectar la dirección de la caída.
¡Advertencia!
Existen varios factores que pueden afectar y cambiar el sentido previsto de caída, por ej., el sentido y la velocidad del viento, la inclinación natural del árbol, los árboles y obstáculos adyacen­tes, el terreno en declive, la estructura de ramas de un solo lado, la estructura de la madera, la pudrición, el peso de la nieve, etc. Para reducir el riesgo de sufrir lesiones graves o mortales, tanto para usted como para los demás, exa­mine en busca de estas condiciones antes de comenzar el trabajo y mantén­gase alerta a cualquier cambio en el sentido durante la caída del árbol.
¡Advertencia!
Siempre observe la condición general del árbol. Los usuarios sin experiencia jamás deberán intentar cortar árboles que tengan el interior podrido, que estén inclinados o bajo tensión. Existe un gran riesgo de que estos árboles se partan o rasguen durante el corte y cau­sen lesiones graves o mortales al operador u otras personas en las inme­diaciones. Siempre busque las ramas quebradas o muertas que puedan sol­tarse con la vibración y caerle encima. Cuando esté talando en una ladera, siempre que sea posible sitúese en el lado cuesta arriba.
Instrucciones para la tala
Durante la tala, mantenga una distancia de por lo menos 2 veces y media de lo largo del árbol con respecto a la persona más cercana.
Cuando esté talando cerca de caminos, vías férreas, cables eléctricos, etc., tome medidas de precaución adicionales. Antes de comenzar los trabajos de corte, avise a la policía, empresas de servicios públicos o autoridades del ferrocarril.
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
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español / EE.UU
B
001BA040 KN
A
45°
45°
B
001BA146 KN
001BA153 KN
001BA143 KN
C
C
¡Advertencia!
El ruido del motor puede apagar las lla­madas de advertencia.
Ruta de escape
Primero, despeje todas las ramas y matorrales de la base del árbol y lugar de trabajo y limpie la parte inferior con un hacha.
Después, establezca dos rutas de escape (B) y retire todos los obstáculos. Estas rutas por lo general deben ser en sentido contrario a la dirección prevista de la caída del árbol (A) y en un ángulo aproximado de 45°. Coloque todas las herramientas y equipo a una distancia segura lejos del árbol, pero no en las rutas de escape.
Raíces de zancos grandes
Si el árbol tiene raíces de zancos grandes, corte primero en el zanco más grande verticalmente (después horizontalmente) y retire el trozo cortado.
Mira
Cuando corte la entalla de tala, use la mira en el protector y la envuelta para verificar el sentido de caída deseado:
Coloque la sierra de modo que la mira apunte exactamente en la dirección que usted desea que caiga el árbol.
Corte convencional
Entalla de tala (C) – determina el sentido de caída del árbol
Para un corte convencional: N Coloque debidamente la entalla de
tala perpendicular a la línea de caída, cerca del suelo.
N Corte hacia abajo en un ángulo de
unos 45° hasta una profundidad de aproximadamente 1/5 a 1/4 del diámetro del tronco.
N Haga un segundo corte horizontal. N Quite el pedazo de 45° resultante.
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001BA150 KN
001BA144 KN
D
D
Técnica de cara libre
Entalla de tala (C) – determina el sentido de caída del árbol
Para un corte de cara libre: N Coloque debidamente la entalla de
tala perpendicular a la línea de caída, cerca del suelo.
N Corte hacia abajo en un ángulo de
unos 50° hasta una profundidad de aproximadamente 1/5 a 1/4 del diámetro del tronco.
N Haga un segundo corte desde
abajo en un ángulo de unos 40°.
N Quite el pedazo de 90° resultante.
Para hacer cortes de albura
N En árboles de tamaño mediano o
más grandes, haga cortes a ambos lados del tronco, a la misma altura que el corte de tala subsiguiente.
N Corte no más del ancho de la
espada.
Esto es especialmente importante en los casos de la madera blanda durante el verano; ayuda a evitar que se astille la albura al caer el árbol.
D =Corte de tala
Técnica convencional y de cara libre: N Comience de 2,5 a 5 cm (1 a 2 pulg)
más arriba que el centro de la entalla de tala.
N Corte horizontalmente hacia la
entalla de tala.
N Deje aprox. 1/10 del diámetro sin
cortar. Este es el eje de inclinación.
N No corte a través del eje – podría
perder el control del sentido de la caída.
Inserte cuñas en el corte de tala donde sea necesario para controlar la caída.
¡Advertencia!
MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C
Si la punta de la espada hace contacto con una cuña, puede producirse un con­tragolpe. Las cuñas deben ser de madera o de plástico, pero jamás de acero porque se dañaría la cadena.
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001BA145 KN
E
E
001BA147 KN
001BA148 KN
1
E = Eje de inclinación
N Ayuda a controlar la caída del árbol. N No corte a través del eje – podría
perder el control del sentido de la caída.
Corte de tala para árboles de diámetro pequeño: Corte en abanico sencillo
Enganche las púas de tope de la motosierra directamente detrás del eje de inclinación del árbol previsto y haga girar la sierra alrededor de ese punto solamente hasta el eje. La púa de tope rueda contra el tronco.
Corte de tala para árboles de diámetro grande
¡Advertencia!
Para talar un árbol cuyo diámetro es mayor que el largo de la espada es necesario emplear el método de corte de tala por secciones o de corte por penetración. Estos métodos son extre­madamente peligrosos porque implican el uso de la punta de la espada y pue­den causar contragolpe. Estas técnicas deben ser empleadas únicamente por profesionales competentes.
Método de corte por secciones
Para el método de corte por secciones haga la primera parte del corte de tala moviendo la espada en abanico hacia el eje de inclinación. Después, usando la púa de tope como pivote, cambie de posición la sierra para el próximo corte.
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Evite reposicionar la sierra más de lo
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necesario. Cuando cambie de posición para el próximo corte, mantenga la espada totalmente dentro de la entalla para mantener un corte de tala recto. Si la sierra empieza a quedar aprisionada, inserte una cuña para abrir el corte. En el último corte, no corte el eje de inclinación del árbol.
Método de corte por penetración
La madera cuyo diámetro es más del doble del largo de la espada requiere el uso del método de corte por penetración antes de hacer el corte de tala.
Primero, corte una entalla de tala grande y ancha. Haga un corte por penetración en el centro de la entalla.
El corte por penetración se hace con la punta de la espada. Comience el corte aplicando la parte inferior de la punta de la espada contra el árbol en un ángulo. Corte hasta que la profundidad de la entalla sea casi igual que el ancho de la espada. En seguida, alinee la sierra en el sentido en que se va a cortar el rebajo.
Con la sierra acelerada a fondo, inserte la espada en el tronco.
Agrande el corte por penetración como se muestra en la ilustración.
¡Advertencia!
En este momento existe un gran peli­gro de que ocurra contragolpe. Preocúpese de mantener el control de la sierra. Para hacer el corte de tala, emplee el método de corte por secciones descrito anteriormente.
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Si no tiene experiencia en el manejo de una motosierra, no intente hacer el corte por penetración. Pida la ayuda de un profesional.
¡Advertencia!
Para reducir el riesgo de lastimarse, no se sitúe nunca directamente detrás del árbol cuando está listo para caer, ya que parte del tronco puede rajarse y caer en dirección del operador, o el árbol puede saltar hacia atrás despren­diéndose del tocón. Siempre sitúese a un lado del árbol que va a caer. Cuando el árbol empiece a caer, retire la espada, apague el motor y aléjese por la ruta de escape prevista. Esté atento a las ramas que caen.
¡Advertencia!
Tenga sumo cuidado con los árboles parcialmente caídos que no tiene bue­nos puntos de apoyo. Cuando el árbol por alguna razón no se cae completa­mente, deje a un lado la sierra y tire el árbol abajo con un cabrestante de cable, un polipasto y aparejo o un trac­tor. Si trata de cortarlo con la sierra, podría lesionarse.
Desrame
El desrame consiste en cortar las ramas de un árbol caído.
¡Advertencia!
Durante la operación de desrame existe gran peligro de contragolpe. No corte con la punta de la espada. Sea preca­vido y evite tocar el tronco o las ramas con la punta de la espada.
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No se suba a un tronco mientras le está cortando las ramas; puede resbalarse o el tronco puede rodar.
Empiece a desramar dejando las ramas inferiores para que sostengan el tronco elevado del suelo. Cuando corte de abajo hacia arriba las ramas que están en el aire, la sierra puede quedar aprisionada o la rama puede caerse, causando la pérdida del control de la máquina. Si la sierra queda aprisionada, apague el motor y levante la rama para poder retirar la sierra.
¡Advertencia!
Sea precavido cuando corte ramas o troncos que están bajo tensión (como pértigas de salto). Las ramas o troncos podrían saltar hacia el operador y cau­sar la pérdida de control de la sierra y lesiones graves o mortales.
Tronzado
El tronzado consiste en cortar un tronco en secciones.
¡Advertencia!
Durante el tronzado, no se suba al tronco. Asegúrese que el tronco no vaya a rodar cerro abajo. Si se encuen­tra en una ladera, sitúese cerro arriba del tronco. Esté atento a los troncos que pueden rodar.
Corte solamente un tronco a la vez. La madera astillada deberá cortarse con
mucho cuidado. Las astillas afiladas pueden atraparse y salir lanzadas hacia el operador.
Cuando corte troncos pequeños, colóquelos en soportes en forma de "V" encima de un caballete. No permita que otra persona sujete el tronco. No sujete nunca el tronco con las piernas o pies.
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Troncos bajo tensión:
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¡Riesgo de aprisionamiento! Siempre comience con un corte de distensión (1) en el lado de compresión. Después haga un corte de tronzado (2) en el lado de tensión. Si la sierra queda aprisionada, apague el motor y retírela del tronco.
Únicamente los profesionales capacitados deben trabajar en una zona en que los troncos, ramas y raíces se encuentran enredados. El trabajo en zonas en las cuales se encuentran árboles caídos por el viento es muy arriesgado. Arrastre los troncos hasta una zona despejada antes de comenzar a cortar. Retire de la zona primero los troncos aislados y despejados.
MANTENIMIENTO, REPARACIÓN Y ALMACENAMIENTO
Los trabajos de mantenimiento, reemplazo o reparación de los dispositivos y sistemas de control de emisiones de escape pueden ser realizados por cualquier taller o técnico de motores no diseñados para vehículos. Sin embargo, si usted está reclamando cobertura de garantía para algún componente que no ha sido reparado o mantenido debidamente, o cuando se utilizan repuestos no autorizados, STIHL puede denegar la garantía.
¡Advertencia!
Utilice solamente piezas de repuesto de STIHL para el mantenimiento y repara­ción. El uso de piezas no fabricadas por STIHL puede causar lesiones graves o mortales.
Siga precisamente las instrucciones de mantenimiento y reparación dadas en la sección correspondiente del manual de instrucciones. Consulte la tabla de mantenimiento en este manual.
¡Advertencia!
Siempre apague el motor y asegúrese que la herramienta de corte está dete­nida antes de hacer cualquier trabajo de mantenimiento, reparación o limpieza de la herramienta motorizada.
¡Advertencia!
No intente hacer ningún trabajo de man­tenimiento o reparación que no esté descrito en su manual de instrucciones. Este tipo de trabajo debe ser realizado únicamente por el concesionario de ser­vicio de STIHL. Por ejemplo, si se utilizan herramientas inadecuadas para retirar el volante del motor o para suje­tar el volante para retirar el embrague, se puede causar daños estructurales en el volante y, como consecuencia, el mismo puede romperse durante el uso.
Use guantes para manipular o mantener las cadenas de aserrado.
¡Advertencia!
Use la bujía especificada y asegúrese de que ella y el cable de encendido están limpios y en buen estado. Siem­pre inserte el casquillo de la bujía bien apretado en el borne de la bujía del tamaño adecuado. (Nota: Si el borne tiene una tuerca adaptadora SAE des­montable, tiene que ser firmemente instalada.) Una conexión suelta entre el borne de la bujía y el conector del cable de encendido en el casquillo puede crear un arco voltaico y encender los vapores del combustible, provocando un incendio.
¡Advertencia!
No pruebe nunca el sistema de encen­dido con el casquillo desconectado de la bujía, o sin tener instalada la bujía, ya que las chispas al descubierto pueden causar un incendio.
¡Advertencia!
No maneje nunca su motosierra si el silenciador está dañado, se ha perdido o si fue modificado. Un silenciador mal cuidado aumenta el riesgo de incendio y puede causar pérdida del oído.
Si el silenciador está equipado con un chispero para reducir el riesgo de incendio, no maneje nunca su motosierra si le falta el chispero o está dañado. Recuerde que el riesgo de incendios forestales es mayor durante las estaciones calurosas y secas.
Mantenga limpios la cadena, la espada y el piñón; sustituya las ruedas o cadenas desgastadas. Mantenga
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afilada la cadena. Podrá notar que la cadena está desafilada cuando la madera fácil de cortar exige gran esfuerzo y cuando aparecen marcas de quemaduras en la madera. Mantenga la cadena correctamente tensada.
Apriete todas las tuercas, pernos y tornillos, excepto los tornillos de ajuste del carburador, después de cada uso.
¡Advertencia!
Para que el freno de la cadena de su motosierra STIHL ejecute correcta­mente su función de reducir el riesgo de contragolpe y otras lesiones, tiene que estar bien cuidado. Igual que el freno de un automóvil, el freno de la cadena de una motosierra se desgasta cada vez que se accione.
La cantidad de desgaste variará dependiendo del uso, las condiciones en que se utiliza la sierra y otros factores. El desgaste excesivo reducirá la eficacia del freno de la cadena y lo puede dejar inoperante.
Para el funcionamiento correcto y eficaz del freno de la cadena, tanto la banda de freno como el tambor del embrague deben mantenerse limpios, sin tierra, grasa u otra materia extraña que pueda reducir la fricción de la banda sobre el tambor.
Por estas razones, toda motosierra de STIHL deberá ser entregada a personal experto, tal como el personal del concesionario de servicio STIHL, para la inspección y servicio periódicos del sistema de freno de acuerdo a los intervalos indicados a continuación:
Uso intenso – cada tres meses, uso moderado – dos veces al año, uso ocasional – anualmente.
La motosierra deberá también llevarse inmediatamente al taller cada vez que el sistema de freno no pueda ser limpiado a fondo o se produzca un cambio en sus características de funcionamiento.
Para el mantenimiento del sistema de control de emisiones, consulte la tabla de mantenimiento y la declaración de garantía limitada que se encuentran cerca del final de este manual.
No limpie la máquina con una lavadora a presión. El chorro fuerte de agua puede dañar las piezas de la máquina.
Guarde la motosierra en un lugar seco y lejos del alcance de los niños. Antes de guardar la máquina por más de unos pocos días, siempre vacíe el tanque de combustible (vea el capítulo "Almacenamiento de la máquina" en el manual de instrucciones).
Accesorio de corte
STIHL es el único fabricante en la industria que produce sus propios motosierras, espadas, cadenas de aserrado y piñones.
Un accesorio de corte consta de la cadena de aserrado, la espada y el piñón.
El accesorio de corte estándar ha sido diseñado para usar específicamente con esta motosierra.
El paso (t) de la cadena de
aserrado (1), el piñón impulsor y el piñón de la espada Rollomatic deben corresponderse.
El grueso del eslabón impulsor (2)
de la cadena de aserrado (1) debe corresponder con el ancho de la ranura de la espada (3).
El uso de componentes no apareados puede resultar en daños permanentes del accesorio de corte dentro de poco tiempo de uso.
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Montaje de la espada y cadena (tensor lateral de la cadena)
Retiro de la cubierta del piñón de la cadena
N Destornille las tuercas y retire la
cubierta del piñón de la cadena.
N Gire el tornillo (1) en sentido
contrahorario, hasta que el tensor deslizante (2) tope contra el extremo izquierdo de la ranura de la caja.
Cómo soltar el freno de la cadena.
N Tire del protector de la mano hacia
el mango delantero hasta que se escuche el "clic" – el freno de la cadena ahora está suelto.
Instalación de la cadena
Use guantes para proteger las manos de los cortadores afilados.
N Coloque la cadena – empiece por la
punta de la espada.
N Coloque la espada sobre los
espárragos (1) – los bordes de corte en la parte superior de la espada deben quedar apuntando hacia la derecha.
N Enganche la espiga del tensor
deslizante en el agujero localizador (2) -- coloque la cadena sobre el piñón (3) al mismo tiempo.
N Gire el tornillo tensor (4) en sentido
horario hasta que la cadena tenga muy poco huelgo por el lado inferior de la espada – y las pestañas de los eslabones impulsores se enganchen en la ranura de la espada.
N Vuelva a colocar la tapa del piñón y
apriete las tuercas con los dedos.
N Pase al capítulo "Tensado de la
cadena de aserrado"
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Montaje de la espada y cadena (tensor frontal de la cadena)
Retiro de la cubierta del piñón de la cadena
N Destornille la tuerca y quite la
cubierta del piñón de la cadena.
N Gire el tornillo (1) en sentido
contrahorario, hasta que la tuerca tensora (2) tope contra el extremo izquierdo de la ranura de la caja.
Suelte el freno de la cadena.
N Tire del protector de la mano hacia
el mango delantero hasta que se escuche el "clic" – el freno de la cadena ahora está suelto.
Instalación de la cadena
Use guantes para proteger las manos de los cortadores afilados.
N Coloque la cadena – empiece por la
punta de la espada.
N Coloque la espada sobre los
espárragos (1) – los bordes de corte en la parte superior de la espada deben quedar apuntando hacia la derecha.
N Enganche la espiga del tensor
deslizante en el agujero localizador (2) – coloque la cadena sobre el piñón (3) al mismo tiempo.
N Gire el tornillo tensor (4) en sentido
horario hasta que la cadena tenga muy poca holgura por el lado inferior de la espada – y las pestañas de los eslabones impulsores se enganchen en la ranura de la espada.
N Vuelva a colocar la tapa del piñón y
apriete su tuerca con los dedos.
N Pase al capítulo "Tensado de la
cadena de aserrado"
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Montaje de la espada y cadena (tensor rápido de la cadena)
Retiro de la cubierta del piñón de la cadena
N Gire el mango (1) a su posición
(hasta que se engrane)
N Gire la tuerca mariposa (2) hacia la
izquierda hasta que cuelgue suelta en la cubierta del piñón de la cadena (3).
N Retire la cubierta del piñón (3) de la
cadena
Soltado del freno de la cadena
N Quite el tornillo (2)
N Tire del protector de la mano hacia
el mango delantero hasta que se escuche que se engancha - el freno de la cadena está suelto
Instalación de la cadena de aserrado
N Coloque el engranaje tensor (1) y la
espada (3) en sus posiciones relativas respectivas
Montaje del engranaje tensor
N Inserte y apriete el tornillo (2)
N Retire e invierta el engranaje tensor
(1).
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Póngase guantes protectores – ¡riesgo de lesiones causadas por las cortadoras afiladas!
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N Coloque la cadena de aserrado
comenzando en la punta de la espada – preste atención a la posición del engranaje tensor y los bordes cortantes.
N Gire el engranaje tensor (1) hacia la
derecha hasta su tope
N Gire la espada para que el
engranaje tensor quede frente al usuario.
N Coloque la cadena de aserrado en
el piñón de la cadena (2)
N Deslice la espada sobre el tornillo
de collar (3); la cabeza del tornillo de collar debe sobresalir por el agujero alargado
N gire un poco la rueda de ajuste (4)
hasta que la cubierta del piñón de la cadena pueda deslizarse completamente contra la caja del motor
N Gire el mango (5) a su posición
(hasta que se engrane)
N Coloque la tuerca mariposa y
apriétela ligeramente.
N Paso siguiente: vea "Tensado de la
cadena de aserrado".
N Guíe el eslabón impulsor hacia la
ranura de la espada (vea la flecha) y gire el engranaje tensor hacia la izquierda hasta su tope.
N Coloque la cubierta del piñón,
deslizando las orejetas guía en las aberturas correspondientes de la caja del motor
Al colocar la cubierta del piñón de la cadena, los dientes de la rueda de ajuste y el engranaje tensor deben engranar; de ser necesario,
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