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Small but Critical

Although they dont get the press, the small machines chainsaws to cell phones keep operations running smoothly
For over 30 years Forklift operator Dawn Britt has worked at Bennett Lumber Products in Princeton, Idaho. She says the Hyster 761 duel directional accelerator pedal, among other things, helps her in the planer mill.
By Barbara Coyner Its hard not to be impressed by a feller buncher working in the woods. The big machinery is impressive in size and performance. But without the little machines, like the chain saws and the cell phones, loggers would be hard pressed to run their operations. I n the Cab Communication Systems For loggers and truckers, communication is just another word for safety. For most, that means a CB radio. But with the advent of cell phones, most truck cabs function like command central, some now boasting satellite phones and laptops too. In logging, youve got to have good communication, says Norris Irish of Clark Communication in Lewiston, Idaho. Communication is utmost in safety, but its not always easy out in the woods. Irish has sold communication packages to loggers in North Central Idaho since 1986, and the specialized mobile radio, or SMR, has been a reliable standby for years. Its analog technology and theres not very much of it left, Irish admits, explaining that Clark owns its own repeaters. It used to be a nationwide 800-megahertz analog system, but then the FCC started changing the frequency allocation and its mostly cell phones now. Cell phone towers are digital and the technology works fine around populated areas, but its not always powerful enough to work in the woods. Were seeing an influx of satellite phone users these days, but those arent cheap. Farther north, St. Maries log truck driver Greg Stancil relies on a push-to-talk business band radiophone that uses repeater technology. I get better coverage with it than I would a cell phone, and there are no dead spots, so I can get out in a lot more places, he says. No doubt, a number of
contractors and truckers are plugged in to cell phones, and as towers sprout like dandelions, coverage improves. One form of communication remains the same, however the familiar citizens band, or CB. Its 2-way with no hesitation, and it allows you to talk person-to-person right there in real time, says Stancil. No small detail, as truckers and contractors share narrow, winding forest roads that allow little room for error. In the Mill Forklifts The story goes that when Pacific Northwest timber workers wanted loads lifted, they would holler out hoister! to the equipment operators. As the Portland-based Williamette- Ersted Company developed its earliest prototype forklift in 1929, hoister morphed into the companys new name, Hyster. So much for industry folklore. Mill worker, Dawn Britt, is one of millions who has made a living as a forklift operator, racking up 30 years at Bennett Lumber Products in Princeton, Idaho. Her Hyster 761 works at in-feed chores in the planer mill, and Britt admits that her early days as the mills first woman forklift driver were largely trial by fire, as she learned to balance loads, work in the dark, and avoid safety hazards. Like all forklift drivers in an open-air mill situation, Britt also deals with the weather. We always have to worry about slickness, and sometimes we run with chains on, she says. You try to match your speed with conditions, and freezing rain can be a real challenge. Were always dealing with weather conditions, because were not a covered mill. This is real life. Real life presents problems with metal on metal, as well. Metal racks on metal forks is like a marble on an ice cube, and the load can slide all over if youre not careful, Britt adds. Theres a lot of hand-eye coordination involved, and its all in the timing. Sometimes you find yourself cussing and ramming and jamming to make things all fit. Although Britt spent her early days ramming and jamming in a Clark, most of the lifts shes operated have been Hysters. She credits Hysters patented Monotrol foot pedal as a real asset. It really helps your timing, she says of the dual directional accelerator pedal. That frees up one of your arms to do other things. The modern breed of forklift is a far cry from the Truclift, built by Clark in 1920, and Hysters latest contribution is an energy efficient AC-powered lift truck. According to company spokesman, Matt Murphy, An AC brushless hoist motor powers the advanced hydraulic system to reduce maintenance. The hydraulic system contributes to increased performance and energy savings through the use of powered and regenerative lowering. The system supports precise load handling with greater performance and less noise, while improving battery efficiency through regenerative electricity. For long-time forklift operators like Dawn Britt, creature comforts remain a big selling point for a job that requires eight hours of getting in and out of the cab. Ive spent 30 years thinking of how I could improve this machine, she says, noting that the technical aspects are just fine. If I were to improve anything, I would definitely want a better heating system. On my machine, theres no defroster, so I have to keep a window cracked and a blower going for visibility. Maybe these things dont matter as much if forklifts operate in covered warehouses. In the Woods Chainsaws Older loggers wince as they remember the first chainsaws, which debuted in the Northwest in the 1950s. Theyve come a long way since then. Husqvarna, Stihl, Poulan, Jonsered, McCullough, Homelite. For the backyard logger, theres now plenty to choose from when it comes to chainsaws. Pro loggers, however, have a whole different take, and in northern Idaho, most loggers say its still a Stihl. In fact, several professional loggers single out the Stihl 46 for its versatility for falling, sawing on the landing, and delimbing. As for power, the Stihl 66 leads the pack. I like the Stihl 66, and Ive probably owned four or five of them, says Jacob Keck, 28, a third generation logger who started sawing

on the landing when he was 14. Theyre reliable, easy to work on, and theyve got lots of power.
St. Maries log truck driver Greg Stancil relies on a radio phone when hes not in an area with good cell phone reception.
Jeff Strong, a sawyer for Hansen Logging of Harvard, Idaho, has logged for 28 years and has tried out Poulans, Huskies, Jonsereds, and Stihls. He keeps a Stihl 46 and a Stihl 66 on hand these days. Ditto, for Potlatch contractor, Francis Larson, who has logged for more than 30 years and finds the Stihl line to be maintenance-free and dependable. Having a dealer in the area helps too, he says. I get about three or four years out of a saw, Strong notes, adding that he does all his own repairs. Some guys buy a new one every six months and find that its cost effective to do it that way. As for Strongs Stihl preferences, The 46 is less weight and works for the smaller diameter timber we cut. The 66 has more stump power. Talk about stump power, Strong remembers the 1980s and cutting 8-foot diameter cedar in the Floodwood State Forest. His saw of choice in those days? A Stihl 56. And his best advice on chainsaws? Do the maintenance. Nick Heath and Shawn Lynas of Idaho Rigging in Potlatch, say that they deal with a host of chainsaw brands when it comes to backyard loggers. But the area pros consistently buy Stihl. Theres a Husqvarna dealer in St. Maries, so we do see more of those there, Heath mentions. The Stihl 46 is a good mid-level saw for the kind of timber we have around here. Its a good saw for falling and strip sawing. Its been around forever, and its easy to get parts for. Lynas points out that big box stores, such as Home Depot, now sell the Husqvarna line, making those products more widely available. They make a good saw, he adds, noting that with the popularity of country living, many more people are learning to operate a chainsaw.

STIHL BG 56, 66, 86, SH 56, 86
Instruction Manual Manual de instrucciones
Warning! Read and follow all safety precautions in Instruction Manual improper use can cause serious or fatal injury. Advertencia! Lea y siga todas las precauciones de seguridad dadas en el manual de instrucciones el uso incorrecto puede causar lesiones graves o mortales.
Instruction Manual 1 - 31 Manual de instrucciones 33 - 67

English

Contents
Guide to Using this Manual Safety Precautions and Working Techniques Using the Unit Working Technique Assembling the Blower Assembling the Vacuum Shredder Fuel Fueling Starting / Stopping the Engine Cleaning the Air Filter Engine Management Adjusting the Carburetor Checking the Spark Plug Engine Running Behavior Rewind Starter Storing the Machine Inspections and Maintenance by Dealer Maintenance and Care Main Parts Specifications Special Accessories Maintenance and Repairs STIHL Incorporated Federal Emission Control Warranty Statement STIHL Incorporated California Exhaust and Evaporative Emissions Control Warranty Statement Trademarks Allow only persons who fully understand this manual to operate your blower. To receive maximum performance and satisfaction from your STIHL blower, it is important that you read and understand and follow the maintenance and safety precautions in chapter "Safety Precautions and Working Techniques" before using your blower. 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 blower is a high-speed tool, some special safety precautions must be observed as with any other power tool to reduce the risk of personal injury. Careless or improper use may cause serious or even fatal injury. STIHL's philosophy is to continually improve all of its products. As a result, engineering changes and improvements may be made from time-to-time. If the operating characteristics or the appearance of your blower differs from those described in this manual, please contact your STIHL dealer for information and assistance.
ANDREAS STIHL AG & Co. KG, 2008 0458-296-8621-A. M29.L8.CP. 0000000925_004_GB
Printed on chlorine-free paper Printing inks contain vegetable oils, paper can be recycled.
Original Instruction Manual
BG 56, BG 56 C, BG 66, BG 86, BG 86 C, SH 56, SH 56 C, SH 86, SH 86 C 1
Guide to Using this Manual
Pictograms All the pictograms attached to the machine are shown and explained in this manual. Symbols in text The 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 without direct reference to an illustration.
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 STIHLs 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 differ from those described in this manual, please contact your STIHL dealer for assistance.
Safety Precautions and Working Techniques
Because the use of any blower may be dangerous, 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 precautions periodically. Careless or improper use may cause serious or fatal injury. Have your STIHL dealer show you how to operate your power tool. Observe all applicable local safety regulations, standards and ordinances. Warning! Do not lend or rent your power tool without the instruction manual. Be sure that anyone using it understands the information contained in this manual.

A description of a step or procedure that refers directly to an illustration may contain item numbers that appear in the illustration. Example: N N Loosen the screw (1) 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.
BG 56, BG 56 C, BG 66, BG 86, BG 86 C, SH 56, SH 56 C, SH 86, SH 86 C
English THE OPERATOR Warning! Use your blower for clearing leaves, twigs, grass, clippings, paper, debris, dust and light snow in yards, gardens, sport stadiums, parks, paths, streets, driveways and parking lots and for similar tasks. 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 blowers. 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 blower involves 1. 2. 3. the operator the power tool the use of the power tool 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 (Rayn aud's phenomenon) or carpal tunnel syndrome. These conditions reduce the hand's ability to feel and regulate temperature, produce numbness and burning sensations and may cause nerve and circulation damage and tissue necrosis. All factors which contribute to whitefinger disease are not known, but cold weather, smoking and diseases or physical conditions that affect blood vessels and blood transport, as well as high vibration levels and long periods of exposure to vibration are mentioned as factors in the development of whitefinger disease. In order to reduce the risk of whitefinger disease and carpal tunnel syndrome, please note the following: Most STIHL power tools are available with an anti-vibration ("AV") system designed to reduce the transmission of vibrations created by the machine to the operator's hands. An AV system is recommended for those persons using power tools on a regular or sustained basis. Keep your hands warm. Keep the antivibrationsystem well maintained. A power tool with loose components or with damaged or worn antivibration element will tend to have higher vibration levels. Maintain a firm grip at all times, but do not squeeze the handles with constant, excessive pressure. Take frequent breaks. All the above-mentioned precautions do not guarantee that you will not sustain whitefinger disease or carpal tunnel syndrome. Therefore, continual and regular users should closely monitor the condition of their hands and fingers. If any of the above symptoms appear, seek medical advice immediately. Warning! The ignition system of the STIHL unit produces an electromagnetic field of a very low intensity. This field may interfere with some pacemakers. To reduce the risk of serious or fatal injury, persons with a pacemaker should consult their physician and the pacemaker manufacturer before operating this tool.

English Proper Clothing Warning! To reduce the risk of injury, the operator should wear proper protective apparel. To reduce the risk of injury to your eyes 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). Warning! Power tool noise may damage your hearing. Wear sound barriers (ear plugs or ear mufflers) to protect your hearing. Continual and regular users should have their hearing checked regularly. Be particularly alert and cautious when wearing hearing protection because your ability to hear warnings (shouts, alarms, etc.) is restricted. Clothing must be sturdy and snug-fitting, but allow complete freedom of movement. Avoid loose-fitting jackets, scarfs, neckties, jewelry, flared or cuffed pants, unconfined long hair or anything that could become drawn into the air intake. Secure hair so it is above shoulder level. Good footing is very important. Do not wear sandals or go barefoot.

Warning!

THE POWER TOOL For illustrations and definitions of the power tool parts see the chapter on "Main Parts and Controls." 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.
To reduce the risk of injury, do not operate the machine unless it is fully assembled with a properly mounted blower tube. Small particles (e.g. dust) blown through the blower tubes and nozzle can cause a static charging of the blower tubes. This is especially true in low humidity and high dust conditions. In order to reduce the risk of shock from static charging and subsequent injury from loss of control, your blower has features designed to help reduce the build up of static electricity in the blower tubes and equalize the charge with the engine and/or operator: The control handle is designed to conduct static electricity through the throttle cable to the engine and from the handle through the operator to the ground.

English THE USE OF THE POWER TOOL Transporting the Power Tool Warning! When transporting your power tool in a vehicle, properly secure it to prevent turnover, fuel spillage and damage to the unit. Fuel Your STIHL power tool uses an oilgasoline mixture for fuel (see the chapter on "Fuel" of your instruction manual). Gasoline is an extremely flammable fuel. If spilled and ignited by a spark or other ignition source, it can cause fire and serious 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. 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. 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. BG 56, BG 56 C, BG 66, BG 86, BG 86 C, SH 56, SH 56 C, SH 86, SH 86 C Before Starting Warning! Always check your power tool for proper condition and operation before starting, particularly the throttle trigger, throttle trigger interlock and stop switch. The throttle trigger must move freely. Never attempt to modify the controls or safety devices. Warning! Never use a power tool that is damaged or not properly maintained. 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. Warning! Keep the handles clean and dry at all times; it is particularly important to keep them free of moisture, pitch, oil, grease or resin in order for you to maintain a firm grip and properly control your power tool. Starting Warning! Start the engine at least 10 feet (3 meters) from the fueling spot, outdoors only.
Warning! Your power tool is a one-person machine. Do not allow other persons in the general work area, even when starting. For specific starting instructions, see the appropriate section of your manual. Place the power tool on firm ground or other solid surface in an open area. Maintain good balance and secure footing. Warning! To reduce the risk of injury from loss of control, do not attempt to "drop start" your power tool. Warning! When you pull the starter grip, do not wrap the starter rope around your hand. Do not let the grip snap back, but guide the starter rope to rewind it properly. Failure to follow this procedure may result in injury to your hand or fingers and may damage the starter mechanism. Warning! Once the engine has started, immediately blip the throttle trigger, which should release the starting throttle and allow the engine to slow down to idle.

Warning! Inhalation of certain dusts, especially organic dusts such as mold or pollen, can cause susceptible persons to have an allergic or asthmatic reaction. Substantial or repeated inhalation of dust and other airborne contaminants, in particular those with a smaller particle size, may cause respiratory or other illnesses. Control dust at the source where possible. Use good work practices, such as operating the unit so that the wind or operating process directs any dust raised by the power tool away from the operator. Follow the recommendations of EPA/OSHA/NIOSH and occupational and trade associations with respect to dust ("particulate matter"). When the inhalation of dust cannot be substantially controlled, i.e., kept at or near the ambient (background) level, the operator and any bystanders should wear a respirator approved by NIOSH/MSHA for the type of dust encountered. Warning! If the substance being blown is a commercial substance, review, understand and follow all warnings and instructions contained in the material safety data sheet for that substance and/or consult the material manufacturer/supplier. The state of California and some other authorities, for instance, have published lists of substances known to cause cancer, reproductive toxicity, etc.
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 blowing or otherwise disturbing asbestos, immediately contact your employer or a local OSHA representative.
Warning! The muffler 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. Using the Vacuum Attachment (only BG 56, BG 86, SH 56, SH 86) For specific assembling instructions, see the appropriate section of your instruction manual. Your shredder vacuum is designed for two-handed operation. Hold and operate the unit with your right hand on the control handle and your left hand on the assist handle. To reduce the risk of injury, do not operate the machine unless it is fully assembled with a properly mounted suction tube and catcher bag.
Warning! In order to reduce the risk of injury from contact with rotating parts and damage to the engine, the intake screen must always be closed and the locking tab engaged when the suction tube is not mounted. Stop engine and wait until the fan is stopped before opening the intake screen.

295BA053 KN

Warning! To reduce the risk of fire and burn injury, 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 stump of a felled tree) away from any combustible substances. Warning! Never modify your muffler. The muffler could be damaged and cause an increase in heat radiation or sparks, thereby increasing the risk of fire and burn injury. You may also permanently damage the engine. Have your muffler serviced and repaired by your STIHL servicing dealer only.
Wear the catcher bag shoulder strap over your left shoulder not across your chest so that you can quickly throw off the unit and catcher bag in an emergency. Warning! To reduce the risk of personal injury from fire and explosion, never attempt to pick up hot or burning substances (e.g. smoldering ashes, glowing cigarettes) or combustible fluids (e.g. gasoline, paint thinners).
English Catalytic converter 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, the following specific safety precautions must be observed. Warning! Since a muffler with a catalytic converter cools down less rapidly than conventional mufflers, 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. Warning! An improperly mounted or damaged cylinder housing or a damaged/deformed muffler shell may interfere with the cooling process of the catalytic converter. 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 catalytic converter is furnished with screens designed to reduce the risk of fire from the emission of hot particles. Due to the heat from the catalytic reaction, these screens will normally BG 56, BG 56 C, BG 66, BG 86, BG 86 C, SH 56, SH 56 C, SH 86, SH 86 C stay clean 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. MAINTENANCE, REPAIR AND STORING

Your vacuum shredder is designed for two-handed operation. Hold and operate the unit with your right hand on the control handle and your left hand on the assist handle. Wear the catcher bag shoulder strap over your left shoulder, not across your chest. This enables you to quickly remove the power tool and catcher bag in an emergency. Operate the unit only with a properly mounted suction tube and catcher bag.
Your blower is designed for one-handed operation. It must be carried by the control handle in the right hand.

295BA052 KN

English Vacuuming abrasive material (such as grit, stone chips, etc.) causes the blower wheel and blower housing to wear at a rapid rate. This results in a considerable loss of suction power. In such a case you should contact your dealer. STIHL recommends a STIHL servicing dealer. Take particular care when vacuuming wet leaves since they may block the blower wheel and elbow. Watch out for small animals when vacuuming and blow-sweeping in open areas, yards and gardens.

Working Technique

To minimize blowing time, use a rake and broom to loosen dirt particles before you start blowing. Recommended working technique to minimize air pollution: N N N If conditions are very dusty, dampen the surfaces before starting work. Pull out the nozzle to full length so that the airstream is at ground level. Do not blow particles in the direction of bystanders, in particular in the direction of children, pets, open windows or freshly washed vehicles. Blow the dirt particles carefully to a central point. Put the dirt in garbage cans. Do not blow it onto neighboring land.
Operate blowers at the lowest engine speed necessary to accomplish the task. Inspect your power tool before starting work, especially the muffler, air inlets and air filter.
Save water by using a blower instead of a water hose for lawn and garden work wherever possible, e.g. for cleaning yards and patios.
Recommended working technique to minimize noise: N Operate your power tool at reasonable times only not early in the morning, late at night or during midday rest periods when people could be disturbed. Keep to the times prescribed locally. Normal recommendation for professional use on weekdays: 9:00hrs to 12:00hrs and 15:00hrs to 17:00hrs. Be considerate towards neighbors at weekends. Fewer engines mean less noise. Where possible, do not run more than one power tool at any time.

Assembling the Blower

Mounting the Blower Tube

Removing the Blower Tube

296BA005 KN

295BA054 KN

N N N Line up the arrows (1).

Push the blower tube (2) into the fan housing stub (3). Push the union nut (4) over the fan housing stub (3) and turn it in the direction of the arrow until the tab (5) engages the opening (6).
Shut off the engine. Insert a suitable tool through the opening in the union nut to press down the tab. Rotate the union nut in the direction of the arrow as far as the stop. Remove the blower tube.
Line up the arrows (1). Push the blower tube (2) into the fan housing stub (3). Push the union nut (4) over the fan housing stub (3) and turn it in the direction of the arrow until the tab (5) engages the opening (6).

296BA004 KN

BG 56, BG 86, SH 56, SH 86

295BA055 KN

Push the nozzle (7) in position (a) onto the blower tube (2) as far as lug (8) and rotate it in the direction of the arrow to lock in position.
Push the nozzle (7) onto the blower tube (2) as far as lug (8), position (a) (long) or position (b) (short), and rotate it in the direction of the arrow to lock in position.

295BA057 KN

Assembling the Vacuum Shredder

Mounting the Elbow

Assembling the Suction Tube

295BA061 KN

295BA080 KN

295BA058 KN

Line up the arrows (3). Push the suction tube into the fan housing stub (4) as far as stop. Push the union nut (5) over the fan housing stub and turn it in the direction of the arrow until the tab (6) engages the opening (7) in the union nut. Continue turning the union nut in direction of arriw and tighten it down firmly.
Line up the arrows on the suction tube and extension tube. Push together and lock in position.
Push the elbow (1) into the catcher bag (2) as far as the mark (smaller arrow). Tighten strap (3) on catcher bag and press down the tab (4). Make sure the zipper on the catcher bag is closed.
Mounting the Suction Tube N

295BA060 KN

Removing the Elbow

295BA059 KN

Shut off the engine.

295BA062 KN

Insert screwdriver in the tap (1), swing it to the right to disengage the intake screen (2) and then open the intake screen. N N Shut off the engine. Insert a suitable tool through the opening in the union nut to press down the tab.
Line up the arrows (5). Push the elbow into the fan housing stub (6) as far as stop. Push the union nut (7) over the fan housing stub and turn it in the direction of the arrow until the tab (8) engages the opening (9) in the union nut.

Shut off the engine. Rotate the union nut in the direction of the arrow as far as the stop. Insert a suitable tool through the opening in the union nut to press down the tab. Continue turning the union nut in the direction of the arrow as far as the next stop. Remove the suction tube. Close the intake screen and lock it in position.
Dispose of empty mixing-oil canisters only at authorized disposal locations.

Fueling

Warning! After fueling, tighten fuel cap as securely as possible by hand. Change the fuel pick up body every year
Starting / Stopping the Engine
Starting the engine N Observe safety precautions.

295BA066 KN

Press the fuel pump bulb (1) at least five times even if the bulb is filled with fuel.
Adjusting the setting lever

295BA064 KN

Only on BG 86, SH 86

295BA065 KN

Before fueling, clean the filler cap and the area around it to ensure that no dirt falls into the tank. Always thoroughly shake the mixture in the canister before fueling your machine. Warning! In order to reduce the risk of burns or other personal injury from escaping gas vapor and fumes, remove the fuel filler cap carefully so as to allow any pressure build-up in the tank to release slowly.
To start, move the setting lever to the run position F
The setting lever selects and holds any throttle position between idle and full throttle.

295BA069 KN

Before storing your machine for a long period, drain and clean the fuel tank and run engine until carburetor is dry.
English Adjusting the choke knob If the engine is cold Starting N Do not let the starter grip snap back. Guide it slowly back into the housing so that the starter rope can rewind properly.
Other hints on starting If the engine stops while the choke knob in on g or during acceleration N Move the choke knob to < and continue cranking until the engine runs.

Choke-Drehknopf auf g

If the engine is warm

295BA067 KN

If the engine does not start N

296BA006 KN

Make sure all settings are correct (choke knob, setting lever in run position F). Repeat the starting procedure.

295BA068 KN

Place the unit on the ground: Make sure you have a firm footing: Hold the unit firmly with your right hand on the housing and press down. Hold the starter grip with your left hand. Pull the starter grip steadily. Pull the starter grip slowly until you feel it engage and then give it a brisk strong pull. Do not pull out the starter rope all the way it might otherwise break.

If fuel tank has been run completely dry and then refueled
Choke-Drehknopf auf < N
Also use this setting if the engine has been running but is still cold.
Models with ErgoStart N N Models without ErgoStart N
Press the fuel pump bulb (1) at least five times even if the bulb is filled with fuel. Now start the engine.
English As soon as the engine runs BG 86, SH 86

Cleaning the Air Filter

If there is a noticeable loss of engine power

295BA071 KN

295BA073 KN
Stopping the Engine. BG 56, BG 66, SH 56
Turn the filter cover lock (1) counterclockwise to the vertical position. Remove the filter cover (2). Clean away loose dirt from around the filter.

295BA072 KN

Move the stop switch to 0 the engine stops the stop switch springs back to the on position.
Pull off the retainer (3) and take the filter (4) out of the filter housing (5). Install a new filter. As a temporary measure you can knock it out on the palm of your hand or blow it out with compressed air do not wash.

Replace damaged parts.

295BA075 KN

295BA074 KN

Blip the throttle trigger (3) the choke knob moves to the run position F the engine returns to idle speed.
Move the setting lever to 0 the engine stops the setting lever springs back to the on position.
English Installing the filter N N Fit the filter in the filter housing and push the retainer into position. Refit the filter cover and turn the filter cover lock to the horizontal position,

Engine Management

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.

Adjusting the Carburetor

The carburetor comes from the factory with a standard setting. This setting provides an optimum fuel-air mixture under most operating conditions. With this carburetor it is only possible to adjust the high speed screw within fine limits. Standard Setting
Shut off the engine. Turn high speed screw (H) counterclockwise (no more than a 3/4 turn) as far as stop. Turn the low speed screw (L) carefully home as far as stop and then open it 1 full turn.

Complete machine Control handle Air filter
Visual inspection (condition, leaks) Clean Check operation Clean Replace Check Replace filter Clean Check idle setting Readjust idle Readjust electrode gap Replace after 100 hours of operation Check Replace1)

x x x x x x x x x x x

Filter in fuel tank Fuel tank Carburetor
Spark plug Spark arresting screen2) in muffler

x x x x x x

Cooling inlets
All accessible screws and nuts (not adjustRetighten ing screws) Antivibration elements Safety labels

Check Replace Replace

STIHL recommends that this work be done by a STIHL servicing dealer. Not in all versions, country-specific

if required x

if problem

monthly

weekly

Main Parts

# Setting Lever (BG 86, SH 86) Spark Plug Boot Muffler Starter Grip Carburetor Adjusting Screws Fuel Pump Choke Lever Filter Housing Filter Cover Lock Fuel Filler Cap Fuel Tank Assist Handle Control Handle Stop Switch (BG 56, BG 66, SH 56) Throttle Trigger Intake Screen Union Nut Blower Tube (BG 56, BG 86, SH 56, SH 86) Round Nozzle Fan Nozzle* Suction Tube* Elbow* Catcher Bag* Blower Tube Silencer (BG 66) Serial number
* Depending on version special accessory

296BA003 KN

Definitions 1. Setting Lever (BG 86, SH 86) Holds the throttle trigger in position.
English 2. Spark Plug Boot Connects the spark plug to the ignition wire. Muffler Attenuates exhaust noises and diverts exhaust gases away from operator. Starter Grip The grip of the pull starter, which is the device to start the engine. Carburetor Adjusting Screws For tuning carburetor. Fuel Pump Delivers fuel for cold start. Choke Lever Eases engine starting by enriching mixture. Filter Housing Covers the air filter element. Filter Cover Lock Secures the filter cover. 15. Throttle Trigger Controls the speed of the engine. 16. Intake Screen Reduces the risk of direct contact with the fan. 17. Union Nut For mounting the blower tube to the blower. 18. Blower Tube (BG 56, BG 86, SH 56, SH 86) Directs airstream. 19. Round Nozzle To be mounted on the blower tube to aim the airstream. 20. Fan Nozzle Alternative nozzle for the blower tube to accelerate the airstream. 21. Suction Tube To be mounted on the blower. 22. Elbow Directs airstream and debris into the catcher bag. 23. Catcher Bag Mounts to elbow to collect the vacuumed debris. 24. Blower Tube Silencer (BG 66) Reduces blower noise.

STIHL Incorporated Federal Emission Control Warranty Statement
Not for California 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
English cost to you, including diagnosis (if the diagnostic work is performed at an authorized dealer), parts, and labor. 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 owner's manual. STIHL Incorporated recommends that you retain all receipts covering maintenance on your small off-road 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 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 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:

English Carburetor Choke (Cold start enrichment system) Intake manifold Air filter Spark plug Magneto or electronic ignition system (ignition module) Catalytic converter (if applicable) Fasteners and N replacement of parts and other services and adjustments necessary for required maintenance at and after the first scheduled replacement point. modifications not recommended or approved in writing by STIHL Incorporated,
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 emissions control system's 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, Purger, 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 The maintenance instructions in this manual are based on the application of the recommended 2-stroke fuel-oil 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, repairs improperly performed or replacements not conforming to STIHL Incorporated specifications that adversely affect performance and/or durability, and alterations or
English 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. Manufacturers Warranty Responsabilities 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. Owners Warranty Responsabilities 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. 3. 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. 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. 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 29