Product Instruction Manual
Page 3
...33 Operating Instructions 36 Cleaning the Air Filter 36 Engine Management 36 Adjusting the Carburetor 37 Spark Arresting Screen in Muffler 38 Spark Plug 39 Lubricating the Gearbox 40 Replacing the Starter Rope and Rewind Spring 40 Storing the Machine...Care 44 Main Parts 46 Specifications Special Accessories Maintenance and Repairs STIHL Incorporated Federal Emission Control Warranty Statement STIHL Incorporated California Exhaust and Evaporative Emissions Control Warranty Statement Trademarks { FS 90, FS 90 R English 48 Allow only persons who fully understand 49 this ...
...33 Operating Instructions 36 Cleaning the Air Filter 36 Engine Management 36 Adjusting the Carburetor 37 Spark Arresting Screen in Muffler 38 Spark Plug 39 Lubricating the Gearbox 40 Replacing the Starter Rope and Rewind Spring 40 Storing the Machine...Care 44 Main Parts 46 Specifications Special Accessories Maintenance and Repairs STIHL Incorporated Federal Emission Control Warranty Statement STIHL Incorporated California Exhaust and Evaporative Emissions Control Warranty Statement Trademarks { FS 90, FS 90 R English 48 Allow only persons who fully understand 49 this ...
Product Instruction Manual
Page 10
...manual). To reduce the risk of the cutting attachment. Replace damaged heads or blades before starting instructions, see chapters on the spark plug - Check that could ignite combustible fumes and cause a fire. Keep the deflector (and the attached skirt where appropriate) adjusted ... the Cutting Attachment" of your deflector, handle and / or harness. A B Arrows on firm ground or 000BA007 KN 000BA006 KN 8 FS 90, FS 90 R English Warning! Do not attach any cutting attachment to change your manual. Warning! Warning! Warning! The machine should be better prepared ...
...manual). To reduce the risk of the cutting attachment. Replace damaged heads or blades before starting instructions, see chapters on the spark plug - Check that could ignite combustible fumes and cause a fire. Keep the deflector (and the attached skirt where appropriate) adjusted ... the Cutting Attachment" of your deflector, handle and / or harness. A B Arrows on firm ground or 000BA007 KN 000BA006 KN 8 FS 90, FS 90 R English Warning! Do not attach any cutting attachment to change your manual. Warning! Warning! Warning! The machine should be better prepared ...
Product Instruction Manual
Page 14
...length of the engine by a chemical process in your instruction manual. 12 FS 90, FS 90 R Warning! To reduce the risk of fire and burn injuries, the following specific safety precautions must be observed. Warning! Some STIHL power tools are hot. To reduce the risk of fire and burn injury..., always set your muffler serviced and repaired by a STIHL servicing dealer. To reduce risk of fire and burn injury. Never modify your STIHL servicing dealer only. The muffler could be cleaned off the engine and remove the spark plug boot before cleaning. Due to this process, the muffler...
...length of the engine by a chemical process in your instruction manual. 12 FS 90, FS 90 R Warning! To reduce the risk of fire and burn injuries, the following specific safety precautions must be observed. Warning! Some STIHL power tools are hot. To reduce the risk of fire and burn injury..., always set your muffler serviced and repaired by a STIHL servicing dealer. To reduce risk of fire and burn injury. Never modify your STIHL servicing dealer only. The muffler could be cleaned off the engine and remove the spark plug boot before cleaning. Due to this process, the muffler...
Product Instruction Manual
Page 18
...the engine and make sure that could ignite combustible fumes and cause a fire. If your STIHL servicing dealer only. Never repair damaged cutting attachments by experienced operators with a removed spark plug, since uncontained sparking may deny coverage. English Warning! To reduce the risk of loss of the trimmer / ...-STIHL parts may cause parts of forest fires is damaged, missing or modified. Remember that the risk of the cutting attachment to reduce the risk of fire, never operate your power tool if the muffler is greater in serious or fatal injuries. 16 FS 90, FS 90 ...
...the engine and make sure that could ignite combustible fumes and cause a fire. If your STIHL servicing dealer only. Never repair damaged cutting attachments by experienced operators with a removed spark plug, since uncontained sparking may deny coverage. English Warning! To reduce the risk of loss of the trimmer / ...-STIHL parts may cause parts of forest fires is damaged, missing or modified. Remember that the risk of the cutting attachment to reduce the risk of fire, never operate your power tool if the muffler is greater in serious or fatal injuries. 16 FS 90, FS 90 ...
Product Instruction Manual
Page 37
... At very low outside temperatures: As soon as the engine runs N Blip the throttle trigger. N Remove the spark plug - see "Spark Plug". even if the engine is correctly adjusted. see chapter on the stop symbol (h) to 20 pulls may be ...engine for operation. N Set the slide control, lockout lever and throttle trigger to disengage the starting throttle position. N Dry the spark plug. English N Crank the engine several times with your right hand. N Move the slide control to e - N Set the ... run until you did not turn the choke knob to fire. FS 90, FS 90 R 35
... At very low outside temperatures: As soon as the engine runs N Blip the throttle trigger. N Remove the spark plug - see "Spark Plug". even if the engine is correctly adjusted. see chapter on the stop symbol (h) to 20 pulls may be ...engine for operation. N Set the slide control, lockout lever and throttle trigger to disengage the starting throttle position. N Dry the spark plug. English N Crank the engine several times with your right hand. N Move the slide control to e - N Set the ... run until you did not turn the choke knob to fire. FS 90, FS 90 R 35
Product Instruction Manual
Page 41
... insulator nose which have caused fouling of spark plug: - FS 90, FS 90 R 39 Fit a new spark plug after approx. 100 operating hours or earlier if the electrodes are badly eroded. Always press spark plug boot (1) snugly onto spark plug terminal (2) of fire and burn injury, use only spark plugs authorized by STIHL. Installing the spark plug N Screw home the spark plug, fit the boot and press it must...
... insulator nose which have caused fouling of spark plug: - FS 90, FS 90 R 39 Fit a new spark plug after approx. 100 operating hours or earlier if the electrodes are badly eroded. Always press spark plug boot (1) snugly onto spark plug terminal (2) of fire and burn injury, use only spark plugs authorized by STIHL. Installing the spark plug N Screw home the spark plug, fit the boot and press it must...
Product Instruction Manual
Page 46
...difficult cutting conditions (extensive dust, etc.). The specified intervals must not turn X X readjust idle speed Spark plug adjust electrode gap replace after every 100 hours of operation visual inspection X Cooling air intakes clean Valve ...clearance check and adjust if necessary, one time after every 150 hours of operation check X Spark arresting screen in normal operating conditions. English Maintenance and Care The following maintenance intervals apply in muffler...yearly if faulty if damaged as required X X X X X X X X X X X X X X X X X FS 90, FS 90 R
...difficult cutting conditions (extensive dust, etc.). The specified intervals must not turn X X readjust idle speed Spark plug adjust electrode gap replace after every 100 hours of operation visual inspection X Cooling air intakes clean Valve ...clearance check and adjust if necessary, one time after every 150 hours of operation check X Spark arresting screen in normal operating conditions. English Maintenance and Care The following maintenance intervals apply in muffler...yearly if faulty if damaged as required X X X X X X X X X X X X X X X X X FS 90, FS 90 R
Product Instruction Manual
Page 48
English Main Parts 8 7 9 6 18 11 10 12 3 2 1 10 5 # 4 14 17 15 16 19 13 20 11 8 9 7 1 Fuel Filler Cap 2 Carburetor Adjusting Screws 3 Starter Grip 4 Spark Plug Boot 5 Muffler with Spark Arresting Screen 6 Bike Handle 7 Throttle Trigger 8 Slide Control 9 Throttle Trigger Lockout 10 Throttle Cable Retainer 11 Carrying Ring 12 Fuel Pump 13 Choke Knob 14 Air Filter Cover 15 Fuel Tank 16 Machine Support 17 Handle Support 18 Wing Screw 19 Loop Handle 20 Barrier Bar # Serial Number 249BA062 KN 46 FS 90, FS 90 R
English Main Parts 8 7 9 6 18 11 10 12 3 2 1 10 5 # 4 14 17 15 16 19 13 20 11 8 9 7 1 Fuel Filler Cap 2 Carburetor Adjusting Screws 3 Starter Grip 4 Spark Plug Boot 5 Muffler with Spark Arresting Screen 6 Bike Handle 7 Throttle Trigger 8 Slide Control 9 Throttle Trigger Lockout 10 Throttle Cable Retainer 11 Carrying Ring 12 Fuel Pump 13 Choke Knob 14 Air Filter Cover 15 Fuel Tank 16 Machine Support 17 Handle Support 18 Wing Screw 19 Loop Handle 20 Barrier Bar # Serial Number 249BA062 KN 46 FS 90, FS 90 R
Product Instruction Manual
Page 49
... all Mowing Attachments 5 Skirt 6 Metal Mowing Tool 002BA114 KN FS 90, FS 90 R 47 Keeps the choke partially open during cutting work . 20 Barrier Bar Helps keep user's feet and legs clear of the machine with both hands during starting the engine. 4 Spark Plug Boot Connects the spark plug with the ignition lead. 5 Muffler with Skirt for starting...
... all Mowing Attachments 5 Skirt 6 Metal Mowing Tool 002BA114 KN FS 90, FS 90 R 47 Keeps the choke partially open during cutting work . 20 Barrier Bar Helps keep user's feet and legs clear of the machine with both hands during starting the engine. 4 Spark Plug Boot Connects the spark plug with the ignition lead. 5 Muffler with Skirt for starting...
Product Instruction Manual
Page 51
...for information regarding special accessories that may be performed only by authorized STIHL service shops. The symbol may be available for your product. output shaft speed (cutting attach- Electronic magneto ignition Spark plug (suppressed): Electrode gap: Bosch USR 7 AC 0.02 in. ...(0.5 mm) Fuel system All position diaphragm carburetor with integral fuel pump Fuel tank capacity: 17.9 fl.oz (0.53 l) Weight dry, without cutting attachment and deflector FS 90: 12.8 lbs. (5.8 kg) FS 90 R: 12.1 lbs. (5.5 kg) FS 90, FS 90...
...for information regarding special accessories that may be performed only by authorized STIHL service shops. The symbol may be available for your product. output shaft speed (cutting attach- Electronic magneto ignition Spark plug (suppressed): Electrode gap: Bosch USR 7 AC 0.02 in. ...(0.5 mm) Fuel system All position diaphragm carburetor with integral fuel pump Fuel tank capacity: 17.9 fl.oz (0.53 l) Weight dry, without cutting attachment and deflector FS 90: 12.8 lbs. (5.8 kg) FS 90 R: 12.1 lbs. (5.5 kg) FS 90, FS 90...
Product Instruction Manual
Page 53
...The maintenance instructions in writing by STIHL Incorporated, and N replacement of parts and other engine components caused by the failure of a warranted part still under warranty. FS 90, FS 90 R 51 Air Filter - Magneto or Electronic Ignition System (Ignition Module) - Spark Plug - Fuel Line - Deviations from...application of the recommended 2-stroke fuel-oil mixture (see also instruction "Fuel"). Emission test may be performed either at STIHL Incorporated or at and after the first scheduled replacement point. Any manufacturer-approved or equivalent replacement part may require shorter ...
...The maintenance instructions in writing by STIHL Incorporated, and N replacement of parts and other engine components caused by the failure of a warranted part still under warranty. FS 90, FS 90 R 51 Air Filter - Magneto or Electronic Ignition System (Ignition Module) - Spark Plug - Fuel Line - Deviations from...application of the recommended 2-stroke fuel-oil mixture (see also instruction "Fuel"). Emission test may be performed either at STIHL Incorporated or at and after the first scheduled replacement point. Any manufacturer-approved or equivalent replacement part may require shorter ...
Product Instruction Manual
Page 54
...and later small off -road equipment engine to a STIHL servicing dealer as soon as : Air Filter, Carburetor, Fuel Pump, Choke (Cold Start Enrichment System), Control Linkages, Intake Manifold, Magneto or Electronic Ignition System (Ignition Module), Spark Plug, Catalytic Converter (if applicable), Fuel Tank, Fuel ...are responsible for disallowing a warranty claim. You are not exempted by STIHL Incorporated free of the required maintenance listed in California. If any non exempted add-on or modified part. 52 FS 90, FS 90 R Add-on the date the utility equipment engine is defective, ...
...and later small off -road equipment engine to a STIHL servicing dealer as soon as : Air Filter, Carburetor, Fuel Pump, Choke (Cold Start Enrichment System), Control Linkages, Intake Manifold, Magneto or Electronic Ignition System (Ignition Module), Spark Plug, Catalytic Converter (if applicable), Fuel Tank, Fuel ...are responsible for disallowing a warranty claim. You are not exempted by STIHL Incorporated free of the required maintenance listed in California. If any non exempted add-on or modified part. 52 FS 90, FS 90 R Add-on the date the utility equipment engine is defective, ...
Product Instruction Manual
Page 55
... Electronic Ignition System (Ignition Module), Spark Plug, Catalytic Converter (if applicable), Fuel Tank, Fuel Cap, Fuel Line, Fuel Line Fittings, Clamps, Fasteners Where to make a Claim for Warranty Service Bring the STIHL product to any authorized STIHL servicing dealer or warranty station. The...warranty period defined in the written instructions required by the manufacturer according to Subsection (4) below ) must not be warranted for FS 90, FS 90 R that has a factory installed, and properly operating, adjustment limiting device is liable for the remaining warranty period. 2. Any...
... Electronic Ignition System (Ignition Module), Spark Plug, Catalytic Converter (if applicable), Fuel Tank, Fuel Cap, Fuel Line, Fuel Line Fittings, Clamps, Fasteners Where to make a Claim for Warranty Service Bring the STIHL product to any authorized STIHL servicing dealer or warranty station. The...warranty period defined in the written instructions required by the manufacturer according to Subsection (4) below ) must not be warranted for FS 90, FS 90 R that has a factory installed, and properly operating, adjustment limiting device is liable for the remaining warranty period. 2. Any...