Stihl Fs 80 R Owners Manual
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10 English / USAFS 80, FS 80 R, FS 85, FS 85 R 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. !Warning!Never attempt to operate your power tool with one hand. Loss of control of the power tool resulting in serious or fatal injury may result. To reduce the risk of cut injuries, keep hands and feet away from the cutting attachment. Never touch a moving cutting attachment with your hand or any other part of your body. !Warning! Do not overreach. 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 and ditches to avoid stumbling. For better footing, clear away scrub and cuttings. Be extremely cautious when working on slopes or uneven ground. !Warning To reduce the risk of injury from loss of control, never work on a ladder or on any other insecure support. Never hold the cutting attachment above waist height. Working conditions Operate and start your power tool only outdoors in a well ventilated area. Operate it under good visibility and daylight conditions only. Work carefully. !Warning! As soon as the engine is running, this product 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. !Warning! If the vegetation being cut or the surrounding ground is coated with a chemical substance (such as an active pesticide or herbicide), read and follow the instructions and warnings that accompanied the substance at issue. 002BA055 KN 002BA054 KN
11 FS 80, FS 80 R, FS 85, FS 85 R English / USA !Warning! Inhalation of certain dusts, especially organic dusts such as mold or pollen, can cause susceptible persons to have an allergic or asthmatic reaction. Substantial or repeated inhalation of dust and other airborne contaminants, in particular those with a smaller particle size, may cause respiratory or other illnesses. Control dust at the source where possible. Use good work practices, such as operating the unit so that the wind or operating process directs any dust raised by the power tool away from the operator. Follow the recommendations of EPA/OSHA/ NIOSH and occupational and trade associations with respect to dust (“particulate matter”). When the inhalation of dust cannot be substantially controlled, i.e., kept at or near the ambient (background) level, the operator and any bystanders should wear a respirator approved by NIOSH/ MSHA for the type of dust encountered. Operating instructions !Warning! Do not operate your power tool using the starting throttle lock, as you do not have control of the engine speed. In the event of an emergency, shut off the engine immediately – move the slide control / stop switch to 0 or STOP . !Warning! The cutting attachment continues to rotate for a short period after the throttle trigger is released (flywheel effect). !Warning! The rotating cutting attachment may fling foreign objects directly or by ricochet a great distance. To reduce the risk of eye and other injury always wear proper eye protection (see the chapter on “Proper Clothing“) and ensure that bystanders are at least 50 feet (15 m) away. To reduce the risk of damage to property, also maintain this distance from such objects as vehicles or windows. Any coworkers who must be in the restricted area should also wear goggles or protective glasses. Stop the engine immediately if you are approached. 15m (50ft)
12 English / USAFS 80, FS 80 R, FS 85, FS 85 R !Warning!Before you start work, examine the area for stones, glass, fence wire, metal, trash or other solid objects. The cutting attachment could throw objects of this kind. !Warning! This trimmer/brushcutter is normally to be used at ground level with the cutting attachment parallel to the ground. Use of a trimmer/brushcutter above ground level or with the cutting attachment perpendicular to the ground may increase the risk of injury, since the cutting attachment is more fully exposed and the power tool may be more difficult to control. !Warning! During cutting, check the tightness and the condition of the cutting attachment at regular short intervals with the engine and attachment stopped. If the behavior of the attachment changes during use, stop the engine immediately, wait until the cutting attachment stops, and check the nut securing the attachment for tightness and the blade or head for cracks, wear and damage. !Warning! A loose blade or head may vibrate, crack, break or come off the trimmer/ brushcutter, which may result in serious or fatal injury. Make sure that the cutting attachment is properly tightened. Use the wrench supplied or one of sufficient length to obtain the proper torque. If the blade or head loosens after being properly tightened, stop work immediately. The retaining nut may be worn or damaged and should be replaced. If the blade or head continues to loosen, see your STIHL dealer. Never use a trimmer/brushcutter with a loose cutting attachment. !Warning! Replace a cracked, damaged or worn- out head or a cracked, bent, warped, damaged, dull or worn out blade immediately, even if damage is limited to superficial cracks. Such attachments may shatter at high speed and cause serious or fatal injury. !Warning! When using rigid blades, avoid cutting close to fences, sides of buildings, tree trunks, stones or other such objects that could cause the power tool to kick out or could cause damage to the blade. STIHL recommends use of the nylon line heads for such jobs. In addition, be alert to an increased possibility of ricochets in such situations. !Warning! If the head, blade or deflector becomes clogged or stuck, always shut off the engine and make sure the cutting attachment has stopped before cleaning. Grass, weeds, etc. should be cleaned off the blade or from around the head at regular intervals. !Warning! To reduce the risk of unintentional rotation of the cutting attachment and injury, always shut off the engine and remove the spark plug boot before replacing the cutting attachment. To reduce the risk of injury, always shut off the engine before adjusting the length of the nylon line on manually adjustable mowing heads. !Warning The gearbox becomes hot during operation. To reduce the risk of burn injury, do not touch the gear housing when it is hot.
13 FS 80, FS 80 R, FS 85, FS 85 R English / USA !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. !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 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. 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 conven- tional 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 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.
14 English / USAFS 80, FS 80 R, FS 85, FS 85 R USING THE CUTTING ATTACHMENTS For an illustration of the various cutting attachments and instructions on proper mounting see the chapter on Mounting the Cutting Attachments in your instruction manual. !Warning! To reduce the risk of severe or fatal injury from blade contact and/or loss of control, never attempt to use a metal blade on an FS model for which it is not authorized. Using the Mowing Heads Do not use with mowing line longer than the intended length. With a properly mounted deflector, the built-in line- limiting blade will automatically adjust the line to its proper length. Using the unit with an overly long nylon cutting line increases the load on the engine and reduces its operating speed. This causes the clutch to slip continuously and results in overheating and damage to important components (e.g. clutch, polymer housing components). Such damage could, among other things, cause the cutting attachment to rotate at idle. Mowing heads are to be used only on trimmer/brushcutters equipped with a line-limiting blade in the deflector in order to keep the line at the proper length (see Parts and Controls chapter in your instruction manual). If the lawn edges are planted with trees or bordered by a fence etc., it is best to use a nylon line head. It achieves a softer cut with less risk of damaging tree bark etc. than polymer blades.However, the polymer-bladed STIHL PolyCut produces a better cut if there are no plants along the edge of the lawn. Sharpening is not necessary, and worn polymer blades are easily replaced. !Warning! To reduce the risk of serious injury, never use wire or metal-reinforced line or other material in place of the nylon cutting lines. Pieces of wire could break off and be thrown at high speed toward the operator or bystanders. STIHL SuperCut mowing head Fresh line is advanced automatically. Frayed line is replaced by a simple adjustment (see instruction sheet supplied with mowing head). STIHL TrimCut mowing head Frayed line is replaced by a simple adjustment (see instruction sheet supplied with mowing head). STIHL AUTOCUT mowing head Nylon cutting cord advances automatically when tapped against the ground (TapAction). 000BA015 KN
15 FS 80, FS 80 R, FS 85, FS 85 R English / USA STIHL PolyCut mowing head Uses either nylon lines or nonrigid, pivoting polymer blades. !Warning! Three rectangular wear limit marks are applied to the base (periphery) of the PolyCut. To reduce the risk of serious injury from breakage of the head or blades, the PolyCut must not be used when it has worn as far as one of these marks. It is important to follow the maintenance instructions supplied with the head. STIHL FixCut mowing head Uses pre-cut lengths of nylon line. Observe wear indicators. Do not continue using the mowing head if the raised moldings (1) on the base are missing or worn – see right illustration above. The mowing head may otherwise shatter and flying objects could result in injury to the operator or bystanders. Install a new mowing head. Risk of Kickout (Blade Thrust) with All Rigid Cutting Blades !Warning! Kickout (blade thrust) is the sudden and uncontrolled motion towards the operators right or rear that can occur when the shaded area (especially the darkly shaded area) of a rotating blade comes in contact with a solid rigid object like a tree, rock, bush or wall. The rapid counterclockwise rotation of the blade may be stopped or slowed, and the cutting attachment may be thrown to the right or to the rear. This kickout (blade thrust) may cause loss of control of the power tool and may result in serious or fatal injury to the operator or bystanders. To reduce the risk of injury, extreme caution should be used when cutting with the shaded area of any rigid blade. 002BA177 KN 002BA135 KN
16 English / USAFS 80, FS 80 R, FS 85, FS 85 R Using the Grass Cutting Blade All kinds of grass and weeds can be easily cut with the grass cutting blade. The power tool is swept in an arc similar to a scythe. !Warning! To reduce the risk of serious or fatal injury from blade breakage, never attempt to use this blade to cut woody materials. The 4-tooth grass cutting blade is intended to cut grass and weeds. It has 4 cutting knives with cutting edges on both sides, i.e. front and rear. When the cutting edges on one side become dull, the blade can be turned over to utilize the cutting edges on the other side. The 8-tooth grass cutting blade is recommended for cutting fern or reed. Both types of grass cutting blade have to be resharpened when all cutting edges are dull. Using the Brush Knife When fitted to the power tool, the brush knife is suitable for applications ranging from cutting matted grass to clearing weeds, wild growth and scrub. To cut wild growth and scrub, lower the rotating brush knife down onto the growth to achieve a chopping effect – but keep the tool below waist height at all times. !Warning! Exercise extreme caution when using this method of cutting. The higher the cutting attachment is off the ground, the greater the risk of loss of control and of cuttings being thrown sideways. Use the power tool like a scythe to cut grass, i.e. sweep it to and fro in an arc. !Warning! When cutting woody materials, use the left side of the blade to avoid kickout (blade thrust) situations. !Warning! Improper use of a brush knife may cause it to crack, chip or shatter. Thrown blade fragments may seriously or fatally injure the operator or bystanders. To reduce the risk of injury, avoid contact with hard or solid foreign objects such as stones, rocks or pieces of metal. !Warning! When cutting young saplings or other woody materials up to 2 cm (3/4) in diameter, use the left side of the blade to avoid kickout situations (see section on “Risk of kickout (blade thrust) with all rigid cutting blades”). Do not attempt to cut woody material with a larger diameter, since the blade may catch or jerk the power tool forward. This may cause damage to the blade or power tool or loss of control of the power tool, resulting in personal injury. Use a circular saw blade for such work. !Warning! Inspect the brush knife at regular short intervals for signs of damage. Do not continue working with a damaged brush knife. Resharpen the brush knife regularly (when it has dulled noticeably). 000BA020 KN 002BA066 KN
17 FS 80, FS 80 R, FS 85, FS 85 R English / USA Using the Circular Saw Blade Circular saw blades are suitable for thinning brush and cutting small trees up to a diameter of 4 cm (1 1/2”). Do not attempt to cut trees with larger diameters, since the blade may catch or jerk the trimmer/brushcutter forward. This may cause damage to the blade or loss of control of the power tool and result in serious injury. Use a chain saw for such work. !Warning! To reduce the risk that the blade will crack and/or break, avoid all contact with stones, rocks or the ground. Sharpen blades in a timely manner as specified – dull teeth may cause the blade to crack or shatter. When a trimmer/brushcutter with a circular saw blade is used to cut down small trees, STIHL recommends that the standard deflector be removed and replaced by the special limit stop deflector (see chapter on “Mounting the Deflector”). This limit stop helps to keep the unit positioned against the tree during the cutting process. Inexperienced users should place the left side of the stop against the tree trunk before beginning to cut. This will keep the trimmer/brushcutter against the tree during the cutting operation and will reduce the risk of loss of control and possible kickout (described above and briefly again below). Before starting the cut, accelerate the engine up to full throttle. Perform cut with uniform pressure. STIHL recommends that the circular saw blade be applied to the right of the tree, using the non-shaded area of the blade, as shown in the illustration above. 000BA016 KN 002BA214 ST 002BA068 KN
18 English / USAFS 80, FS 80 R, FS 85, FS 85 R !Warning! The risk of kickout is highest when cutting in the darker shaded area. To reduce the risk of kickout and resulting injury, do not use this area of the circular saw blade for cutting trees or shrubs. Special techniques using the lighter shaded areas of the blade to cut shrubs and trees should only be used by experienced operators with specialized training in the use and control of the trimmer/brushcutter. !Warning! To reduce the risk of loss of control and serious injury to the operator or bystanders by a kickout, never use a circular saw blade on a trimmer/ brushcutter with a loop handle, but rather only on one with a bicycle handle. When felling small trees, maintain a distance of at least two tree lengths from the nearest coworker. !Warning! In order to reduce the risk of injury from thrown objects or operator contact with the blade or head, be sure to remount the standard deflector when no longer using a circular saw blade. 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 sections of your instruction manual. !Warning! Always stop the engine and make sure that the cutting attachment is stopped before doing any maintenance or repair work or cleaning the power tool. Do not attempt any maintenance or repair work not described in your instruction manual. Have such work performed by your STIHL servicing dealer only. Wear gloves when handling or performing maintenance on blades. !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 the spark plug 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 power tool 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 power tool if the screen is missing or damaged. Remember that the risk of forest fires is greater in hot or dry weather.
19 FS 80, FS 80 R, FS 85, FS 85 R English / USA !Warning! Never repair damaged cutting attach- ments by welding, straightening or modifying the shape. This may cause parts of the cutting attachment to come off and result in serious or fatal injuries. Keep blades sharp. Tighten all nuts, bolts and screws, except the carburetor adjustment screws, after each use. Store the power tool in a dry and high or locked location out of reach of children. Before storing for longer than a few days, always empty the fuel tank. See chapter Storing the Machine in the instruction manual.