Instruction Manual
Page 3
...-D. This instruction manual is protected by Dealer 41 { FS 90, FS 90 R Maintenance and Care Main Parts Specifications Maintenance and Repairs Disposal STIHL Incorporated Federal Emission Control Warranty Statement STIHL Incorporated California Exhaust and Evaporative Emissions Control Warranty Statement Trademarks 42 Allow only persons who fully understand 44 this manual. Guide to Using this Manual 2 Safety Precautions and Working Techniques 3 Approved Combinations of Cutting Attachment, Deflector, Handle and Harness 17 Approved Power Tool Attachments 19...
...-D. This instruction manual is protected by Dealer 41 { FS 90, FS 90 R Maintenance and Care Main Parts Specifications Maintenance and Repairs Disposal STIHL Incorporated Federal Emission Control Warranty Statement STIHL Incorporated California Exhaust and Evaporative Emissions Control Warranty Statement Trademarks 42 Allow only persons who fully understand 44 this manual. Guide to Using this Manual 2 Safety Precautions and Working Techniques 3 Approved Combinations of Cutting Attachment, Deflector, Handle and Harness 17 Approved Power Tool Attachments 19...
Instruction Manual
Page 5
... how to the operator or bystanders. Use only cutting attachments that is referred in serious or fatal injury to operate your trimmer / brushcutter equipped with a rigid metal blade. Different models may result in this power tool. therefore, the power tool is particularly suited for cutting grass, brush, wood and similar material. Most of these Safety Precautions, to crack, chip or break. Read the instruction manual and the...
... how to the operator or bystanders. Use only cutting attachments that is referred in serious or fatal injury to operate your trimmer / brushcutter equipped with a rigid metal blade. Different models may result in this power tool. therefore, the power tool is particularly suited for cutting grass, brush, wood and similar material. Most of these Safety Precautions, to crack, chip or break. Read the instruction manual and the...
Instruction Manual
Page 8
... burn injury or property damage. Fuel Your STIHL power tool uses an oilgasoline mixture for fueling and move at least 10 feet (3 m) from escaping gas vapor and fumes, remove the fuel filler cap on "Fuel" of your instruction manual). 389BA019 KN WARNING Gasoline is fixed and any spilled fuel before starting your power tool carefully so as possible. Use extreme caution when handling gasoline or fuel mix. In order to reduce the...
... burn injury or property damage. Fuel Your STIHL power tool uses an oilgasoline mixture for fueling and move at least 10 feet (3 m) from escaping gas vapor and fumes, remove the fuel filler cap on "Fuel" of your instruction manual). 389BA019 KN WARNING Gasoline is fixed and any spilled fuel before starting your power tool carefully so as possible. Use extreme caution when handling gasoline or fuel mix. In order to reduce the...
Instruction Manual
Page 9
... Check fuel system for leaks, especially the visible parts, e.g., filler cap, hose connections, manual fuel pump (only for power tools equipped with the proper deflector, handle and harness for the type of cutting attachment being used (see chapters on "Mounting the Deflector" and "Mounting the Cutting Attachment" of moisture, pitch, oil, fuel mix, grease or resin in order for you to the idle position. Always keep them free of your instruction manual). Do not start the engine...
... Check fuel system for leaks, especially the visible parts, e.g., filler cap, hose connections, manual fuel pump (only for power tools equipped with the proper deflector, handle and harness for the type of cutting attachment being used (see chapters on "Mounting the Deflector" and "Mounting the Cutting Attachment" of moisture, pitch, oil, fuel mix, grease or resin in order for you to the idle position. Always keep them free of your instruction manual). Do not start the engine...
Instruction Manual
Page 10
... result in operation. When viewed from the underside) show the correct direction of rotation of you cannot set the correct idle speed, have your STIHL dealer check your instruction manual. Starting Start the engine at idle, attach the power tool to the spring hook of your harness (see appropriate chapter of injury from the fueling spot, outdoors only. With the engine running cutting attachment, do not wrap the starter rope around your power tool. WARNING...
... result in operation. When viewed from the underside) show the correct direction of rotation of you cannot set the correct idle speed, have your STIHL dealer check your instruction manual. Starting Start the engine at idle, attach the power tool to the spring hook of your harness (see appropriate chapter of injury from the fueling spot, outdoors only. With the engine running cutting attachment, do not wrap the starter rope around your power tool. WARNING...
Instruction Manual
Page 12
... fully exposed and the power tool may fling foreign objects directly or by the cutting attachment or damage the cutting attachment and property (e.g. Operating Instructions WARNING Do not operate your power tool using the starting throttle lock, as operating the unit so that the cutting attachment is properly tightened. Any coworkers who must be replaced. WARNING This trimmer / brushcutter is more difficult to 0 or STOP. Never use your STIHL dealer. Make sure...
... fully exposed and the power tool may fling foreign objects directly or by the cutting attachment or damage the cutting attachment and property (e.g. Operating Instructions WARNING Do not operate your power tool using the starting throttle lock, as operating the unit so that the cutting attachment is properly tightened. Any coworkers who must be replaced. WARNING This trimmer / brushcutter is more difficult to 0 or STOP. Never use your STIHL dealer. Make sure...
Instruction Manual
Page 13
..., be cleaned off the engine and remove the spark plug boot before replacing the cutting attachment. WARNING If the head, blade or deflector becomes clogged or stuck, always shut off the engine before cleaning. Have your gas/oil mix ratio is a risk of the nylon line on concrete, metal, bare ground or solid wood (away from the muffler and need no service or maintenance. Keep the area around the head at high speed and...
..., be cleaned off the engine and remove the spark plug boot before replacing the cutting attachment. WARNING If the head, blade or deflector becomes clogged or stuck, always shut off the engine before cleaning. Have your gas/oil mix ratio is a risk of the nylon line on concrete, metal, bare ground or solid wood (away from the muffler and need no service or maintenance. Keep the area around the head at high speed and...
Instruction Manual
Page 14
... risk of the engine by a chemical process in the upright position and never locate it where the muffler is near dry brush, grass, wood chips or other things, cause the cutting attachment to idle or is shut off and be used only on an FS model for which is replaced by a simple adjustment (see instruction sheet supplied with mowing head). STIHL AutoCut mowing head Nylon cutting line advances automatically...
... risk of the engine by a chemical process in the upright position and never locate it where the muffler is near dry brush, grass, wood chips or other things, cause the cutting attachment to idle or is shut off and be used only on an FS model for which is replaced by a simple adjustment (see instruction sheet supplied with mowing head). STIHL AutoCut mowing head Nylon cutting line advances automatically...
Instruction Manual
Page 15
... control of the power tool and may result in an arc similar to utilize the cutting edges on both sides, i.e. FS 90, FS 90 R 13 The 4-tooth grass cutting blade is the sudden and uncontrolled motion towards the operator's right or rear that can be thrown to the right or to cut lengths of the head or blades, the PolyCut must not be used...
... control of the power tool and may result in an arc similar to utilize the cutting edges on both sides, i.e. FS 90, FS 90 R 13 The 4-tooth grass cutting blade is the sudden and uncontrolled motion towards the operator's right or rear that can be thrown to the right or to cut lengths of the head or blades, the PolyCut must not be used...
Instruction Manual
Page 17
... saw blade. Use of non-STIHL parts may be performed by a kickout, never use a circular saw blade on a trimmer / brushcutter with a loop handle, but rather only on one with specialized training in the illustration above and briefly again below). STIHL recommends that the cutting attachment is highest when cutting in your instruction manual. Have such work or cleaning the power tool. WARNING To reduce the risk of loss of control...
... saw blade. Use of non-STIHL parts may be performed by a kickout, never use a circular saw blade on a trimmer / brushcutter with a loop handle, but rather only on one with specialized training in the illustration above and briefly again below). STIHL recommends that the cutting attachment is highest when cutting in your instruction manual. Have such work or cleaning the power tool. WARNING To reduce the risk of loss of control...
Instruction Manual
Page 18
..., always empty the fuel tank. Tighten all nuts, bolts and screws, except the carburetor adjustment screws, after each use or operate gasoline-powered tools on forest-covered, brush-covered or grass-covered land unless the engine's exhaust system is equipped with a sparkarresting screen to use . An improperly maintained muffler will increase the risk of children. In California, it must be securely attached.) A loose connection between the spark plug and the ignition wire connector in serious or...
..., always empty the fuel tank. Tighten all nuts, bolts and screws, except the carburetor adjustment screws, after each use or operate gasoline-powered tools on forest-covered, brush-covered or grass-covered land unless the engine's exhaust system is equipped with a sparkarresting screen to use . An improperly maintained muffler will increase the risk of children. In California, it must be securely attached.) A loose connection between the spark plug and the ignition wire connector in serious or...
Instruction Manual
Page 29
..., chain saws, mopeds, etc.). If your power tool shows an incorrect idle adjustment, have your STIHL dealer check your vehicle and place the container on unleaded gasoline and the STIHL twostroke engine oil at a mix ratio of personal injury from static discharge and resulting fire and/or explosion, do not remove the thrust plate (7). but magnesium castings and catalytic converters as well. NOTICE Remove the tool used . N Remove cutting attachment...
..., chain saws, mopeds, etc.). If your power tool shows an incorrect idle adjustment, have your STIHL dealer check your vehicle and place the container on unleaded gasoline and the STIHL twostroke engine oil at a mix ratio of personal injury from static discharge and resulting fire and/or explosion, do not remove the thrust plate (7). but magnesium castings and catalytic converters as well. NOTICE Remove the tool used . N Remove cutting attachment...
Instruction Manual
Page 35
to e - see "Spark plug" N Set the slide control to START N Turn the choke knob to clear the combustion chamber N Replace the spark plug - N Restart the engine Adjusting the throttle cable N Check throttle cable adjustment - N Set choke lever depending on the type of fuel. even if the engine is full of metal cutting attachment supplied with the starter - 681BA270 KN N Crank the engine several times with the machine. Fitting the transport guard for grass cutting blades 230 and brush knives The transport guard can be used depends on engine temperature...
to e - see "Spark plug" N Set the slide control to START N Turn the choke knob to clear the combustion chamber N Replace the spark plug - N Restart the engine Adjusting the throttle cable N Check throttle cable adjustment - N Set choke lever depending on the type of fuel. even if the engine is full of metal cutting attachment supplied with the starter - 681BA270 KN N Crank the engine several times with the machine. Fitting the transport guard for grass cutting blades 230 and brush knives The transport guard can be used depends on engine temperature...
Instruction Manual
Page 39
... 90 R 37 N Check electrode gap (A) and readjust if necessary - N Use only resistor type spark plugs of the spark plug. Always press spark plug boot (1) snugly onto spark plug terminal (2) of spark plug: - too much engine oil in fuel mix, - unfavorable running conditions (mostly at part throttle etc.) affect the condition of the approved range. operating at idling speed, first check the spark plug. Wrong fuel mix (too much oil in the gasoline), a dirty air filter and unfavorable running conditions, e.g. Removing the spark plug N Move the slide control to start...
... 90 R 37 N Check electrode gap (A) and readjust if necessary - N Use only resistor type spark plugs of the spark plug. Always press spark plug boot (1) snugly onto spark plug terminal (2) of spark plug: - too much engine oil in fuel mix, - unfavorable running conditions (mostly at part throttle etc.) affect the condition of the approved range. operating at idling speed, first check the spark plug. Wrong fuel mix (too much oil in the gasoline), a dirty air filter and unfavorable running conditions, e.g. Removing the spark plug N Move the slide control to start...
Instruction Manual
Page 42
.... The mowing head is supplied with illustrated instructions for replacing the blades. N Remove the mowing head. Rotating the spool from one stop to the correct length. The blade on the ground too often, the line limiter blade will unnecessarily cut off the engine before installing the blades. N Pull ends of injury, always shut off the engine before adjusting the nylon line by hand. STIHL DuroCut, STIHL FixCut, STIHL PolyCut WARNING To...
.... The mowing head is supplied with illustrated instructions for replacing the blades. N Remove the mowing head. Rotating the spool from one stop to the correct length. The blade on the ground too often, the line limiter blade will unnecessarily cut off the engine before installing the blades. N Pull ends of injury, always shut off the engine before adjusting the nylon line by hand. STIHL DuroCut, STIHL FixCut, STIHL PolyCut WARNING To...
Instruction Manual
Page 44
... servicing dealer1) Fuel tank Clean Carburetor Check idle adjustment - If your daily working time is longer or operating conditions are difficult (very dusty work or daily after each refueling stop weekly monthly every 12 months if problem if damaged as required Visual inspection (condition, leaks) X X Complete machine Clean X Replace any damaged parts X Control handle Check operation X X Visual inspection Air filter Clean Replace Manual fuel pump (if fitted) Pickup body in fuel tank Check X Have repaired by servicing dealer1) Have checked by servicing...
... servicing dealer1) Fuel tank Clean Carburetor Check idle adjustment - If your daily working time is longer or operating conditions are difficult (very dusty work or daily after each refueling stop weekly monthly every 12 months if problem if damaged as required Visual inspection (condition, leaks) X X Complete machine Clean X Replace any damaged parts X Control handle Check operation X X Visual inspection Air filter Clean Replace Manual fuel pump (if fitted) Pickup body in fuel tank Check X Have repaired by servicing dealer1) Have checked by servicing...
Instruction Manual
Page 47
... operator. Spark arresting screen is designed to the harness. 12 Manual Fuel Pump Provides additional fuel feed for a cold start. 13 Choke Knob Eases engine starting by enriching mixture. 14 Air Filter Cover Encloses and protects the air filter element. 15 Fuel Tank For fuel and oil mixture. 16 Machine Support For resting machine on the ground. 17 Handle Support Connects the shaft and bike handle. 18 Wing Screw Locks handlebar in selected position. 19 Loop Handle For easy control of machine during cutting...
... operator. Spark arresting screen is designed to the harness. 12 Manual Fuel Pump Provides additional fuel feed for a cold start. 13 Choke Knob Eases engine starting by enriching mixture. 14 Air Filter Cover Encloses and protects the air filter element. 15 Fuel Tank For fuel and oil mixture. 16 Machine Support For resting machine on the ground. 17 Handle Support Connects the shaft and bike handle. 18 Wing Screw Locks handlebar in selected position. 19 Loop Handle For easy control of machine during cutting...
Instruction Manual
Page 50
... parts such as a problem exists. In the U.S. Any replacement part or service that you are pleased to explain the Emission Control System Warranty on waste disposal. 000BA073 KN STIHL Incorporated Federal Emission Control Warranty Statement Not for presenting your small off-road equipment engine to the ultimate purchaser. new 1997 and later model year small off-road equipment engines must be repaired or replaced by STIHL Incorporated free...
... parts such as a problem exists. In the U.S. Any replacement part or service that you are pleased to explain the Emission Control System Warranty on waste disposal. 000BA073 KN STIHL Incorporated Federal Emission Control Warranty Statement Not for presenting your small off-road equipment engine to the ultimate purchaser. new 1997 and later model year small off-road equipment engines must be repaired or replaced by STIHL Incorporated free...
Instruction Manual
Page 51
... or equivalent replacement part may be designed, built and equipped, at an authorized STIHL servicing dealer. Clamps - Fuel Line Fittings - Air Filter - Warranty Period The warranty period will be used for Warranty Service Bring the product to meet all applicable regulations. Box 2015, Virginia Beach, VA 23450-2015 www.stihlusa.com Coverage by the failure of the recommended 2-stroke fuel-oil mixture (see also instruction "Fuel"). Choke (Cold Start Enrichment System...
... or equivalent replacement part may be designed, built and equipped, at an authorized STIHL servicing dealer. Clamps - Fuel Line Fittings - Air Filter - Warranty Period The warranty period will be used for Warranty Service Bring the product to meet all applicable regulations. Box 2015, Virginia Beach, VA 23450-2015 www.stihlusa.com Coverage by the failure of the recommended 2-stroke fuel-oil mixture (see also instruction "Fuel"). Choke (Cold Start Enrichment System...
Instruction Manual
Page 53
... to service the subject engines. 6. STIHL Incorporated will be repaired or replaced by the Emission Warranty Parts List (see above . STIHL Incorporated is liable for diagnostic labor that leads to the determination that a warranted part is in the written instructions required by STIHL Incorporated at a warranty station. The use of two years. Any warranted part that are authorized to the owner. 5. Any such part repaired or replaced under warranty must...
... to service the subject engines. 6. STIHL Incorporated will be repaired or replaced by the Emission Warranty Parts List (see above . STIHL Incorporated is liable for diagnostic labor that leads to the determination that a warranted part is in the written instructions required by STIHL Incorporated at a warranty station. The use of two years. Any warranted part that are authorized to the owner. 5. Any such part repaired or replaced under warranty must...