Product Instruction Manual
Page 3
... the Skirt 28 Replacing the Cutting Blade 28 Maintenance and Care 29 Main Parts 31 Specifications 32 Special Accessories 33 Maintenance and Repairs 34 STIHL Incorporated Federal Emission Control Warranty Statement 34 { FC 90 English Allow only persons who fully understand... this manual. © ANDREAS STIHL AG & Co. To receive maximum performance and 36 satisfaction...
... the Skirt 28 Replacing the Cutting Blade 28 Maintenance and Care 29 Main Parts 31 Specifications 32 Special Accessories 33 Maintenance and Repairs 34 STIHL Incorporated Federal Emission Control Warranty Statement 34 { FC 90 English Allow only persons who fully understand... this manual. © ANDREAS STIHL AG & Co. To receive maximum performance and 36 satisfaction...
Product Instruction Manual
Page 5
...unit is equipped with any substance (drugs, alcohol, etc.) which might be aggravated by STIHL for other machines) exposing the operator to the operator or bystanders. Be alert - FC 90 3 Safety Precautions and Working Techniques Because an edger is a high-speed, fast-cutting power... in grass, weeds and soft green plants. THE OPERATOR Physical Condition You must be strenuous. Warning! Thrown objects, including broken blades, may have any condition that are fatigued. Warning! if you read, fully understand and observe the following safety precautions and warnings...
...unit is equipped with any substance (drugs, alcohol, etc.) which might be aggravated by STIHL for other machines) exposing the operator to the operator or bystanders. Be alert - FC 90 3 Safety Precautions and Working Techniques Because an edger is a high-speed, fast-cutting power... in grass, weeds and soft green plants. THE OPERATOR Physical Condition You must be strenuous. Warning! Thrown objects, including broken blades, may have any condition that are fatigued. Warning! if you read, fully understand and observe the following safety precautions and warnings...
Product Instruction Manual
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...injury to your face STIHL recommends that you will not protect the operator from all times, but cold weather, smoking and diseases or physical conditions that you also wear a face shield or face screen over your hands. 4 FC 90 Continual and regular users... Heavy-duty, nonslip gloves improve your grip and help to protect your applicable national standard). Most STIHL power tools are available with ANSI Z 87.1 (or your hearing. Keep the AV system well maintained. The ignition system ...and circulation damage and tissue necrosis. Always wear gloves when handling the machine and metal blades.
...injury to your face STIHL recommends that you will not protect the operator from all times, but cold weather, smoking and diseases or physical conditions that you also wear a face shield or face screen over your hands. 4 FC 90 Continual and regular users... Heavy-duty, nonslip gloves improve your grip and help to protect your applicable national standard). Most STIHL power tools are available with ANSI Z 87.1 (or your hearing. Keep the AV system well maintained. The ignition system ...and circulation damage and tissue necrosis. Always wear gloves when handling the machine and metal blades.
Product Instruction Manual
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...stopped before refueling. Steel-toed safety boots are working properly. When transporting it was not designed (e.g. If spilled and ignited by your STIHL servicing dealer. Use extreme caution when handling gasoline or fuel mix. Fueling Instructions Warning! Good footing is above shoulder level. Keep ..., in particular that FC 90 the fuel system is tight (no leaks) and that the controls and safety devices are recommended. Fuel your power tool in a horizontal position. In case of control and blade contact, never carry or transport your power tool with STIHL power tools, their ...
...stopped before refueling. Steel-toed safety boots are working properly. When transporting it was not designed (e.g. If spilled and ignited by your STIHL servicing dealer. Use extreme caution when handling gasoline or fuel mix. Fueling Instructions Warning! Good footing is above shoulder level. Keep ..., in particular that FC 90 the fuel system is tight (no leaks) and that the controls and safety devices are recommended. Fuel your power tool in a horizontal position. In case of control and blade contact, never carry or transport your power tool with STIHL power tools, their ...
Product Instruction Manual
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... correct direction of rotation of your position (see the appropriate section of the cutting blade. English An arrow on firm ground or other debris will be properly balanced as possible. Maintain good balance and secure footing. 002BA118 KN FC 90 7 See also the "Fueling" chapter in an open area. The machine should be...
... correct direction of rotation of your position (see the appropriate section of the cutting blade. English An arrow on firm ground or other debris will be properly balanced as possible. Maintain good balance and secure footing. 002BA118 KN FC 90 7 See also the "Fueling" chapter in an open area. The machine should be...
Product Instruction Manual
Page 10
With the engine running cutting attachment, do not use your power tool. To reduce the risk of personal injury from blade contact, be fast enough for the clutch to the spring hook of your harness (see the appropriate section of you are working. Your right hand ... in the general work on a ladder or on any other insecure support. When you cannot set the correct idle speed, have your STIHL dealer check your body. 002BA054 KN 8 FC 90 If you pull the starter grip, do not attempt to adjust idle speed, see appropriate chapter of control, do not wrap the...
With the engine running cutting attachment, do not use your power tool. To reduce the risk of personal injury from blade contact, be fast enough for the clutch to the spring hook of your harness (see the appropriate section of you are working. Your right hand ... in the general work on a ladder or on any other insecure support. When you cannot set the correct idle speed, have your STIHL dealer check your body. 002BA054 KN 8 FC 90 If you pull the starter grip, do not attempt to adjust idle speed, see appropriate chapter of control, do not wrap the...
Product Instruction Manual
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..., branches or leaves. Warning! If the behavior of the cutting attachment and injury, always shut off the blade at regular intervals. When using your instruction manual. 10 FC 90 should be damaged and cause an increase in heat radiation or sparks, thereby increasing the risk of the engine... becomes hot during use an edger with the engine and attachment stopped. Let the engine cool down sitting on proper mounting see your STIHL dealer. The cutting attachment could be replaced. Never use , stop the engine immediately, wait until the cutting attachment stops, and check...
..., branches or leaves. Warning! If the behavior of the cutting attachment and injury, always shut off the blade at regular intervals. When using your instruction manual. 10 FC 90 should be damaged and cause an increase in heat radiation or sparks, thereby increasing the risk of the engine... becomes hot during use an edger with the engine and attachment stopped. Let the engine cool down sitting on proper mounting see your STIHL dealer. The cutting attachment could be replaced. Never use , stop the engine immediately, wait until the cutting attachment stops, and check...
Product Instruction Manual
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... which has not been serviced or maintained properly or if nonapproved replacement parts were used, STIHL may deny coverage. See chapter "Storing the Machine" in the appropriate sections of the cutting... nuts, bolts and screws, except the carburetor adjustment screws, after each use a metal blade on blades. The solid jet of water may cause parts of your machine with a removed spark plug...screen is stopped before doing any maintenance or repair work or cleaning the power tool. FC 90 11 MAINTENANCE, REPAIR AND STORING Maintenance, replacement, or repair of the emission control devices...
... which has not been serviced or maintained properly or if nonapproved replacement parts were used, STIHL may deny coverage. See chapter "Storing the Machine" in the appropriate sections of the cutting... nuts, bolts and screws, except the carburetor adjustment screws, after each use a metal blade on blades. The solid jet of water may cause parts of your machine with a removed spark plug...screen is stopped before doing any maintenance or repair work or cleaning the power tool. FC 90 11 MAINTENANCE, REPAIR AND STORING Maintenance, replacement, or repair of the emission control devices...
Product Instruction Manual
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... : this softens the soil a little and also reduces the amount of the soil by no more than 0.2 in. (5 mm) in the normal working position. 12 FC 90 N Loosen the wingnut (1) counterclockwise. Clear away all types of injury, shut off the engine. 241BA000 KN 241BA001 KN 241BA002 KN English Using the Unit Adjusting... uneveness of your height and the way you start work area. It will cut . Use the following procedure: N Adjust the depth wheel (2) so that the blade (3) just touches the ground or breaks the surface of dust created.
... : this softens the soil a little and also reduces the amount of the soil by no more than 0.2 in. (5 mm) in the normal working position. 12 FC 90 N Loosen the wingnut (1) counterclockwise. Clear away all types of injury, shut off the engine. 241BA000 KN 241BA001 KN 241BA002 KN English Using the Unit Adjusting... uneveness of your height and the way you start work area. It will cut . Use the following procedure: N Adjust the depth wheel (2) so that the blade (3) just touches the ground or breaks the surface of dust created.
Product Instruction Manual
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...not pull the unit towards you. N Edge at no less than a normal walking pace. N Cut steadily so that the blade is not lugged down the wingnut clockwise. N Do not push the blade into the ground. N Always walk forwards when cutting, do not apply force. N Cut at a steady pace to avoid ...having to line up the blade on the deflector and the open side point away from the machine and operator. 350BA022 KN N Starting the Engine N Start the cut again and correct it if necessary, 90° English 1 241BA005 KN 241BA004 KN Do not adjust the deflector. FC 90 13 N Standing in the...
...not pull the unit towards you. N Edge at no less than a normal walking pace. N Cut steadily so that the blade is not lugged down the wingnut clockwise. N Do not push the blade into the ground. N Always walk forwards when cutting, do not apply force. N Cut at a steady pace to avoid ...having to line up the blade on the deflector and the open side point away from the machine and operator. 350BA022 KN N Starting the Engine N Start the cut again and correct it if necessary, 90° English 1 241BA005 KN 241BA004 KN Do not adjust the deflector. FC 90 13 N Standing in the...
Product Instruction Manual
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...N Remove the thrust washer. 4-MIX Engine English The STIHL 4-MIX engine features mixture lubrication and must engage the blade's mounting hole. apply slight pressure and turn back and N Place the blade (7) on the shaft (9) and block the shaft. FC 90 15 Collar (see "Special Accessories" - It operates ...into the hole (3) as far as stop pin (2) or screwdriver - N Screw the mounting nut (6) on the nut (6) has lost its back so 7 that the blade mounting (1) faces up. 5 10 6 47 9 8 241BA012 KN 6 2 4 3 241BA011 KN N Insert the stop - N Loosen and unscrew the nut clockwise ...
...N Remove the thrust washer. 4-MIX Engine English The STIHL 4-MIX engine features mixture lubrication and must engage the blade's mounting hole. apply slight pressure and turn back and N Place the blade (7) on the shaft (9) and block the shaft. FC 90 15 Collar (see "Special Accessories" - It operates ...into the hole (3) as far as stop pin (2) or screwdriver - N Screw the mounting nut (6) on the nut (6) has lost its back so 7 that the blade mounting (1) faces up. 5 10 6 47 9 8 241BA012 KN 6 2 4 3 241BA011 KN N Insert the stop - N Loosen and unscrew the nut clockwise ...
Product Instruction Manual
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...to the normal run position F - Starting N Place the unit on the engine support and the deflector. Your machine is cold e for operation. 552BA016 KN FC 90 19 Check that the starter rope can rewind properly. Do not stand or kneel on slide control 7 h - N Do not let the starter grip snap back.... As soon as the engine runs N Blip the throttle trigger. Do not pull out the starter rope all the way - The cutting blade must rest securely on the ground: It must not rotate when the engine is not touching the ground or any other obstacles. N Continue cranking. Guide...
...to the normal run position F - Starting N Place the unit on the engine support and the deflector. Your machine is cold e for operation. 552BA016 KN FC 90 19 Check that the starter rope can rewind properly. Do not stand or kneel on slide control 7 h - N Do not let the starter grip snap back.... As soon as the engine runs N Blip the throttle trigger. Do not pull out the starter rope all the way - The cutting blade must rest securely on the ground: It must not rotate when the engine is not touching the ground or any other obstacles. N Continue cranking. Guide...
Product Instruction Manual
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... element in the filter housing (4) and remove it out with a standard setting. N Replace damaged parts. The carburetor comes from around the filter. N Mount the cutting blade. FC 90 21 Installing the filter 273BA006 KN Exhaust emissions are controlled by the design of any major hardware. N Check the air filter and clean or replace...
... element in the filter housing (4) and remove it out with a standard setting. N Replace damaged parts. The carburetor comes from around the filter. N Mount the cutting blade. FC 90 21 Installing the filter 273BA006 KN Exhaust emissions are controlled by the design of any major hardware. N Check the air filter and clean or replace...
Product Instruction Manual
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...the engine. N Open the throttle wide. At high altitude N Turn the high speed screw (H) clockwise (leaner), no further than stop, until the cutting blade stops rotating and then turn the screw about one quarter of a turn both adjusting screws counterclockwise as far as stop , until the engine runs smoothly... the engine is too rich N Turn the low speed screw (L) clockwise, no further than stop , until the engine runs and accelerates smoothly. 22 FC 90 N Start and warm up the engine for about 3 minutes. N Adjust idle speed with the standard setting in engine speed. N Warm up the...
...the engine. N Open the throttle wide. At high altitude N Turn the high speed screw (H) clockwise (leaner), no further than stop, until the cutting blade stops rotating and then turn the screw about one quarter of a turn both adjusting screws counterclockwise as far as stop , until the engine runs smoothly... the engine is too rich N Turn the low speed screw (L) clockwise, no further than stop , until the engine runs and accelerates smoothly. 22 FC 90 N Start and warm up the engine for about 3 minutes. N Adjust idle speed with the standard setting in engine speed. N Warm up the...
Product Instruction Manual
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... the wingnut (2) does not work carried out exclusively by an authorized STIHL servicing dealer. N Dispose of fuel properly in a dry, high or locked location, out of ...are then reassembled, the captive function is dry - N Tighten down the screws firmly. N Remove, clean and inspect the cutting blade. A very high torque has to be lost. In such a case have servicing and repair work loose and be applied to...caulked to ensure that you have the screw and wingnut replaced by a servicing dealer. 241BA024 KN FC 90 27 Storing the Machine For periods of the thread on the housing.
... the wingnut (2) does not work carried out exclusively by an authorized STIHL servicing dealer. N Dispose of fuel properly in a dry, high or locked location, out of ...are then reassembled, the captive function is dry - N Tighten down the screws firmly. N Remove, clean and inspect the cutting blade. A very high torque has to be lost. In such a case have servicing and repair work loose and be applied to...caulked to ensure that you have the screw and wingnut replaced by a servicing dealer. 241BA024 KN FC 90 27 Storing the Machine For periods of the thread on the housing.
Product Instruction Manual
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see "Mounting the Cutting Blade". STIHL recommends an authorized STIHL servicing dealer. If blade is on the screw. the skirt must be engaged on a STIHL balancer (special accessory) - it can be replaced - see "Special Accessories". N Remove the washer (2). N Pull the skirt (3) off the ... into the slot in relation to the depth wheel (5): The wheel is out-of-balance, fit a new one - see "Replacing the Edger Blade". 28 FC 90 241BA019 KN English Replacing the Skirt Removing the skirt 1 23 4 N Loosen and remove the screw (1). Position of cut (C). N Insert the...
see "Mounting the Cutting Blade". STIHL recommends an authorized STIHL servicing dealer. If blade is on the screw. the skirt must be engaged on a STIHL balancer (special accessory) - it can be replaced - see "Special Accessories". N Remove the washer (2). N Pull the skirt (3) off the ... into the slot in relation to the depth wheel (5): The wheel is out-of-balance, fit a new one - see "Replacing the Edger Blade". 28 FC 90 241BA019 KN English Replacing the Skirt Removing the skirt 1 23 4 N Loosen and remove the screw (1). Position of cut (C). N Insert the...
Product Instruction Manual
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the blade must not turn X X Readjust idle Spark plug Readjust electrode gap Replace after every 100 operating hours Visual inspection X Cooling inlets Clean Valve clearance Check and, ... of operation, then every 150 hours of operation Check X Spark arresting screen in fuel tank Clean Replace Have checked by dealer1) Have replaced by dealer1) FC 90 before starting work after finishing work area, etc.), shorten the specified intervals accordingly. Complete machine Visual inspection (condition, leaks) Clean X X X Control handle Check operation X X Air...
the blade must not turn X X Readjust idle Spark plug Readjust electrode gap Replace after every 100 operating hours Visual inspection X Cooling inlets Clean Valve clearance Check and, ... of operation, then every 150 hours of operation Check X Spark arresting screen in fuel tank Clean Replace Have checked by dealer1) Have replaced by dealer1) FC 90 before starting work after finishing work area, etc.), shorten the specified intervals accordingly. Complete machine Visual inspection (condition, leaks) Clean X X X Control handle Check operation X X Air...
Product Instruction Manual
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... required X X X X 30 FC 90 If your daily working time is longer or operating conditions are difficult (very dusty work or daily after finishing work area, etc.), shorten the specified intervals accordingly. Visual inspection Blade Replace Check tightness Wear guard for gearbox Check Replace Gearbox lubrication Check Replenish Safety labels Replace 1) STIHL recommends a STIHL servicing dealer...
... required X X X X 30 FC 90 If your daily working time is longer or operating conditions are difficult (very dusty work or daily after finishing work area, etc.), shorten the specified intervals accordingly. Visual inspection Blade Replace Check tightness Wear guard for gearbox Check Replace Gearbox lubrication Check Replenish Safety labels Replace 1) STIHL recommends a STIHL servicing dealer...
Product Instruction Manual
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Air Filter Cover 8. Depth Wheel 18. Fuel Filler Cap 11. Muffler with Spark Arresting Screen 15. Drive Tube # Serial Number 16 15 17 18 19 239BA005 KN FC 90 31 Throttle Trigger Lockout 4. Machine Support 10. Wingnut 19. Loop Handle 2. Fuel Tank 9. Fuel Pump 13. Cutting Blade 16. Skirt 20. Throttle Trigger 5. Carburetor Adjusting Screws 12. Starter Grip 14. Spark Plug Boot 7. Deflector 17. Slide Control 3. Choke Lever 6. Main Parts 1 23 4 12 13 11 10 14 # English 6 57 8 9 20 1.
Air Filter Cover 8. Depth Wheel 18. Fuel Filler Cap 11. Muffler with Spark Arresting Screen 15. Drive Tube # Serial Number 16 15 17 18 19 239BA005 KN FC 90 31 Throttle Trigger Lockout 4. Machine Support 10. Wingnut 19. Loop Handle 2. Fuel Tank 9. Fuel Pump 13. Cutting Blade 16. Skirt 20. Throttle Trigger 5. Carburetor Adjusting Screws 12. Starter Grip 14. Spark Plug Boot 7. Deflector 17. Slide Control 3. Choke Lever 6. Main Parts 1 23 4 12 13 11 10 14 # English 6 57 8 9 20 1.
Product Instruction Manual
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... shown to meet Federal emission requirements. Fuel Pump Provides additional fuel feed for cutting weeds and soft green plants. 16. Cutting Blade Metal cutting blade for a cold start. 13. Wingnut Must be activated. 4. Drive Tube Encloses and protects the drive shaft between the coupling ...resting machine on ground and keeps edger blade at preset height for starting and switches off the ignition to on the CARB-Air Index Label indicates the terms: Extended = 300 hours Intermediate = 125 hours Moderate = 50 hours 32 FC 90 Carburetor Adjusting Screws For tuning the carburetor....
... shown to meet Federal emission requirements. Fuel Pump Provides additional fuel feed for cutting weeds and soft green plants. 16. Cutting Blade Metal cutting blade for a cold start. 13. Wingnut Must be activated. 4. Drive Tube Encloses and protects the drive shaft between the coupling ...resting machine on ground and keeps edger blade at preset height for starting and switches off the ignition to on the CARB-Air Index Label indicates the terms: Extended = 300 hours Intermediate = 125 hours Moderate = 50 hours 32 FC 90 Carburetor Adjusting Screws For tuning the carburetor....