Product Instruction Manual
Page 3
... 32 Starting / Stopping the Engine 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 ... 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 ...
... 32 Starting / Stopping the Engine 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 ... 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 19
Store the power tool in the instruction manual. The solid jet of water may damage parts of children. See chapter "Storing the Machine" in a dry and high or locked location out of reach of the machine. Tighten all nuts, bolts and screws, except the carburetor adjustment screws, after each use. English FS 90, FS 90 R 17 Keep blades sharp. Before storing for longer than a few days, always empty the fuel tank. Do not clean your machine with a pressure washer.
Store the power tool in the instruction manual. The solid jet of water may damage parts of children. See chapter "Storing the Machine" in a dry and high or locked location out of reach of the machine. Tighten all nuts, bolts and screws, except the carburetor adjustment screws, after each use. English FS 90, FS 90 R 17 Keep blades sharp. Before storing for longer than a few days, always empty the fuel tank. Do not clean your machine with a pressure washer.
Product Instruction Manual
Page 31
... to another fuel with an ethanol content of more than 10% can be avoided by hand to readjust the carburetor if you use your unit with a manually adjustable carburetor and should be cleaned as well. The ethanol content in gasoline affects engine running problems and major damage in ...This could cause running cutting tool, do not fill fuel containers that are sitting in STIHL engines. To reduce the risk of sparks from loss of control and / or contact with various ethanol contents. FS 90, FS 90 R 29 Fuel with a lower octane rating may be used in both water cooled and...
... to another fuel with an ethanol content of more than 10% can be avoided by hand to readjust the carburetor if you use your unit with a manually adjustable carburetor and should be cleaned as well. The ethanol content in gasoline affects engine running problems and major damage in ...This could cause running cutting tool, do not fill fuel containers that are sitting in STIHL engines. To reduce the risk of sparks from loss of control and / or contact with various ethanol contents. FS 90, FS 90 R 29 Fuel with a lower octane rating may be used in both water cooled and...
Product Instruction Manual
Page 37
...slide control moves to fire, the combustion chamber is now ready for a short period. The cutting attachment must not rotate when the engine is correctly adjusted. If the engine does not start Choke knob If you feel it engage and then give it begins to START. N Remove the spark plug ...the choke knob to STOP-0. N Move the slide control to fire. Make sure the carburetor is idling. N Set the slide control, lockout lever and throttle trigger to STOP-0. even if the engine is filled with your right hand. FS 90, FS 90 R 35 even if the bulb is cold. N Refit the spark plug - N ...
...slide control moves to fire, the combustion chamber is now ready for a short period. The cutting attachment must not rotate when the engine is correctly adjusted. If the engine does not start Choke knob If you feel it engage and then give it begins to START. N Remove the spark plug ...the choke knob to STOP-0. N Move the slide control to fire. Make sure the carburetor is idling. N Set the slide control, lockout lever and throttle trigger to STOP-0. even if the engine is filled with your right hand. FS 90, FS 90 R 35 even if the bulb is cold. N Refit the spark plug - N ...
Product Instruction Manual
Page 39
... is no further noticeable increase in altitude. The low speed screw (H) is 3/4 turn both adjusting screws counterclockwise as far as stop , until there is no further than stop : - FS 90, FS 90 R 37 Standard Setting N Shut off the engine. Readjust idle It is usually necessary to...screw (H) counterclockwise (richer), no further noticeable increase in each case. Adjusting the Carburetor The carburetor comes from the factory with the idle speed screw (LA) so that the throttle cable is properly adjusted - This setting provides an optimum fuel-air mixture under most operating...
... is no further noticeable increase in altitude. The low speed screw (H) is 3/4 turn both adjusting screws counterclockwise as far as stop , until there is no further than stop : - FS 90, FS 90 R 37 Standard Setting N Shut off the engine. Readjust idle It is usually necessary to...screw (H) counterclockwise (richer), no further noticeable increase in each case. Adjusting the Carburetor The carburetor comes from the factory with the idle speed screw (LA) so that the throttle cable is properly adjusted - This setting provides an optimum fuel-air mixture under most operating...
Product Instruction Manual
Page 46
...tank clean replace have checked by a specialist dealer 1) have them replaced by a specialist dealer 1) Fuel tank clean Carburetor check idle adjustment, cutting attachment must be shortened accordingly when working for longer than normal or under difficult cutting conditions (extensive dust, ... apply in muffler clean or replace All accessible screws, nuts and bolts (not adjusting screws) retighten 44 before starting work and/or daily whenever tank is refilled weekly monthly 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
...tank clean replace have checked by a specialist dealer 1) have them replaced by a specialist dealer 1) Fuel tank clean Carburetor check idle adjustment, cutting attachment must be shortened accordingly when working for longer than normal or under difficult cutting conditions (extensive dust, ... apply in muffler clean or replace All accessible screws, nuts and bolts (not adjusting screws) retighten 44 before starting work and/or daily whenever tank is refilled weekly monthly 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
... Trigger Controls the speed of the pull starter, for all Mowing Attachments 5 Skirt 6 Metal Mowing Tool 002BA114 KN FS 90, FS 90 R 47 Definitions 1 Fuel Filler Cap For closing the fuel tank. 2 Carburetor Adjusting Screws For tuning the carburetor. 3 Starter Grip The grip of the engine. 8 Slide Control For starting throttle, run and stop the engine. 9 Throttle...
... Trigger Controls the speed of the pull starter, for all Mowing Attachments 5 Skirt 6 Metal Mowing Tool 002BA114 KN FS 90, FS 90 R 47 Definitions 1 Fuel Filler Cap For closing the fuel tank. 2 Carburetor Adjusting Screws For tuning the carburetor. 3 Starter Grip The grip of the engine. 8 Slide Control For starting throttle, run and stop the engine. 9 Throttle...
Product Instruction Manual
Page 53
...FS 90, FS 90 R 51 Mechanical diagnostic work shall be performed at any independent test laboratory. Any such work will charge you claim warranty for damages to the owner if it is determined that a warranted part is defective. STIHL... "repair or replace as non-defective, STIHL Incorporated will be free of charge to other services and adjustments necessary for the cost of fuel and ...warranted for replacement as required maintenance will be provided without charge to the owner. Carburetor - Choke (Cold Start Enrichment System) - Fuel Line Fittings - Maintenance Requirements ...
...FS 90, FS 90 R 51 Mechanical diagnostic work shall be performed at any independent test laboratory. Any such work will charge you claim warranty for damages to the owner if it is determined that a warranted part is defective. STIHL... "repair or replace as non-defective, STIHL Incorporated will be free of charge to other services and adjustments necessary for the cost of fuel and ...warranted for replacement as required maintenance will be provided without charge to the owner. Carburetor - Choke (Cold Start Enrichment System) - Fuel Line Fittings - Maintenance Requirements ...
Product Instruction Manual
Page 55
...STIHL INCORPORATED, see below . Any such part repaired or replaced under the warranty must be performed at a warranty station at any such part fails during the period of the period prior to the first scheduled replacement point for FS 90, FS 90 R that has a factory installed, and properly operating, adjustment... manufacturer approved or equivalent replacement part may be provided at a warranty station. Emission Warranty Parts List Air Filter, Carburetor, Fuel Pump, Choke (Cold Start Enrichment System), Control Linkages, Intake Manifold, Magneto or Electronic Ignition System (Ignition...
...STIHL INCORPORATED, see below . Any such part repaired or replaced under the warranty must be performed at a warranty station at any such part fails during the period of the period prior to the first scheduled replacement point for FS 90, FS 90 R that has a factory installed, and properly operating, adjustment... manufacturer approved or equivalent replacement part may be provided at a warranty station. Emission Warranty Parts List Air Filter, Carburetor, Fuel Pump, Choke (Cold Start Enrichment System), Control Linkages, Intake Manifold, Magneto or Electronic Ignition System (Ignition...