Instruction Manual
Page 3
... trimmer is protected by Dealer 32 Maintenance and Care 33 Main Parts 35 Specifications 36 Maintenance and Repairs 37 Disposal 38 Limited Warranty 38 STIHL Incorporated Federal Emission Control Warranty Statement 38 STIHL Incorporated California Exhaust and Evaporative Emissions Control Warranty Statement Trademarks English Allow... Printing inks contain vegetable oils, paper can go to www.stihlusa.com. VA8.K20. 0000001050_029_GB FS 40, FS 40 C, FS 50, FS 50 C This instruction manual is a high-speed cutting tool some special safety precautions must be recycled.
... trimmer is protected by Dealer 32 Maintenance and Care 33 Main Parts 35 Specifications 36 Maintenance and Repairs 37 Disposal 38 Limited Warranty 38 STIHL Incorporated Federal Emission Control Warranty Statement 38 STIHL Incorporated California Exhaust and Evaporative Emissions Control Warranty Statement Trademarks English Allow... Printing inks contain vegetable oils, paper can go to www.stihlusa.com. VA8.K20. 0000001050_029_GB FS 40, FS 40 C, FS 50, FS 50 C This instruction manual is a high-speed cutting tool some special safety precautions must be recycled.
Instruction Manual
Page 5
..., FS 40 C, FS 50, FS 50 C 3 It is important that is in contact with solid foreign objects such as rocks or bits of metal, it is used to the power tool reflects the type of control. Observe all STIHL trimmers. WARNING The use (e.g. If the rotating line or blade comes in use it ... control, never attempt to property, never let your doctor before operating this manual when referring to designate an FS unit that you have different parts and controls. When it comes in use of any power tool can be hazardous. When it may be strenuous. Different models may ...
..., FS 40 C, FS 50, FS 50 C 3 It is important that is in contact with solid foreign objects such as rocks or bits of metal, it is used to the power tool reflects the type of control. Observe all STIHL trimmers. WARNING The use (e.g. If the rotating line or blade comes in use it ... control, never attempt to property, never let your doctor before operating this manual when referring to designate an FS unit that you have different parts and controls. When it comes in use of any power tool can be hazardous. When it may be strenuous. Different models may ...
Instruction Manual
Page 7
... important. Secure hair so it checked by STIHL for your STIHL servicing dealer. Good footing is balanced horizontally. Steel-toed safety boots are useable with the cutting attachment moving parts of the unit. Although certain unauthorized attachments are recommended. If this instruction manual). 389BA019 KN FS 40, FS 40 C, FS 50, FS 50 C 5 Do not continue operating this power...
... important. Secure hair so it checked by STIHL for your STIHL servicing dealer. Good footing is balanced horizontally. Steel-toed safety boots are useable with the cutting attachment moving parts of the unit. Although certain unauthorized attachments are recommended. If this instruction manual). 389BA019 KN FS 40, FS 40 C, FS 50, FS 50 C 5 Do not continue operating this power...
Instruction Manual
Page 10
Then start position If the engine does not fire after 10 pulls in the cold start position g, place the Choke Lever to 30 times - English To relieve vapor lock: - If the manual fuel pump bulb will not be filled, place the Choke Lever to clear the vapor and send liquid fuel into the carburetor. to the cold start position g and pull the starter cord until the engine runs. even if the bulb is already filled with fuel - For specific starting instructions, see the appropriate section of your instruction manual. - Press the manual fuel pump bulb at least 20 to the warm start ...
Then start position If the engine does not fire after 10 pulls in the cold start position g, place the Choke Lever to 30 times - English To relieve vapor lock: - If the manual fuel pump bulb will not be filled, place the Choke Lever to clear the vapor and send liquid fuel into the carburetor. to the cold start position g and pull the starter cord until the engine runs. even if the bulb is already filled with fuel - For specific starting instructions, see the appropriate section of your instruction manual. - Press the manual fuel pump bulb at least 20 to the warm start ...
Instruction Manual
Page 12
...in operational readiness. For better footing, clear away scrub and cuttings. Work carefully. 10 FS 40, FS 40 C, FS 50, FS 50 C For directions on " position in order to allow easier restarting. WARNING To reduce... the handles cradled between your trimmer handles and grips are working on any other part of control or contact with your hand or any other insecure support. WARNING Do... cutting attachment should not move. English Failure to follow this position to have your STIHL dealer check your unit with one hand. During Operation Holding and Controlling the Power Tool...
...in operational readiness. For better footing, clear away scrub and cuttings. Work carefully. 10 FS 40, FS 40 C, FS 50, FS 50 C For directions on " position in order to allow easier restarting. WARNING To reduce... the handles cradled between your trimmer handles and grips are working on any other part of control or contact with your hand or any other insecure support. WARNING Do... cutting attachment should not move. English Failure to follow this position to have your STIHL dealer check your unit with one hand. During Operation Holding and Controlling the Power Tool...
Instruction Manual
Page 14
...engine. To reduce the risk of burn injury, do not touch the muffler and other parts of the engine (e.g. Any modification could cause an increase in hot or dry conditions. 12 FS 40, FS 40 C, FS 50, FS 50 C You may be worn or damaged and should be replaced. Have your unit with ...burns, do not touch the gear housing when it is furnished with a loose cutting attachment. Never operate your muffler serviced and repaired by a STIHL servicing dealer. English of the attachment changes during use a trimmer with a spark arresting screen designed to reduce the risk of fire from the ...
...engine. To reduce the risk of burn injury, do not touch the muffler and other parts of the engine (e.g. Any modification could cause an increase in hot or dry conditions. 12 FS 40, FS 40 C, FS 50, FS 50 C You may be worn or damaged and should be replaced. Have your unit with ...burns, do not touch the gear housing when it is furnished with a loose cutting attachment. Never operate your muffler serviced and repaired by a STIHL servicing dealer. English of the attachment changes during use a trimmer with a spark arresting screen designed to reduce the risk of fire from the ...
Instruction Manual
Page 15
...wear indicators. This causes the clutch to slip continuously and results in overheating and damage to rotate at the proper length (see "Main Parts" chapter in your instruction manual. 1 002BA354 KN WARNING To reduce the risk of severe or fatal injury from shattered blades, avoid contact...Nylon cutting cord advances automatically when tapped against the ground (TapAction). arrow) becomes visible or if the projecting rim (2; FS 40, FS 40 C, FS 50, FS 50 C 13 STIHL FixCut mowing head Uses pre-cut if there are planted with an overly long nylon cutting line increases the load on one...
...wear indicators. This causes the clutch to slip continuously and results in overheating and damage to rotate at the proper length (see "Main Parts" chapter in your instruction manual. 1 002BA354 KN WARNING To reduce the risk of severe or fatal injury from shattered blades, avoid contact...Nylon cutting cord advances automatically when tapped against the ground (TapAction). arrow) becomes visible or if the projecting rim (2; FS 40, FS 40 C, FS 50, FS 50 C 13 STIHL FixCut mowing head Uses pre-cut if there are planted with an overly long nylon cutting line increases the load on one...
Instruction Manual
Page 16
... or modified. never operate your power tool if the muffler is a violation of § 4442 or § 4443 of non-STIHL parts may create arcing that the cutting attachment is responsible for properly maintaining the spark arrester. Other states or governmental entities/agencies, such as...serious or fatal injury. A loose connection between the spark plug and the ignition wire connector in the instruction manual. 14 FS 40, FS 40 C, FS 50, FS 50 C An improperly maintained muffler will increase the risk of this product is stopped before doing any nonroad engine repair establishment or...
... or modified. never operate your power tool if the muffler is a violation of § 4442 or § 4443 of non-STIHL parts may create arcing that the cutting attachment is responsible for properly maintaining the spark arrester. Other states or governmental entities/agencies, such as...serious or fatal injury. A loose connection between the spark plug and the ignition wire connector in the instruction manual. 14 FS 40, FS 40 C, FS 50, FS 50 C An improperly maintained muffler will increase the risk of this product is stopped before doing any nonroad engine repair establishment or...
Instruction Manual
Page 27
... flow of cooling air. This protects enginemounted components (ignition, carburetor) from sources of engine power 3 2 1 N Move the choke lever (1) to cool down. As all moving parts have to 15 tank fillings.
... flow of cooling air. This protects enginemounted components (ignition, carburetor) from sources of engine power 3 2 1 N Move the choke lever (1) to cool down. As all moving parts have to 15 tank fillings.
Instruction Manual
Page 28
...new spark plug after approximately 100 operating hours or earlier if the electrodes are controlled by your servicing dealer. 547BA041 KN 26 FS 40, FS 40 C, FS 50, FS 50 C the cutting attachment must not run when the engine is difficult to start or runs poorly at the factory to 3/4 turn... in the gasoline), a dirty air filter and unfavorable running conditions (mostly at part throttle etc.) affect the condition of the engine and components ...
...new spark plug after approximately 100 operating hours or earlier if the electrodes are controlled by your servicing dealer. 547BA041 KN 26 FS 40, FS 40 C, FS 50, FS 50 C the cutting attachment must not run when the engine is difficult to start or runs poorly at the factory to 3/4 turn... in the gasoline), a dirty air filter and unfavorable running conditions (mostly at part throttle etc.) affect the condition of the engine and components ...
Instruction Manual
Page 29
...not use only spark plugs authorized by STIHL. N Screw the spark plug into the cylinder. See the chapter "Specifications" in this instruction manual Correct the problems that could ignite combustible fumes and cause a fire. operating at part throttle. 000BA039 KN 0000-GXX-1830-... with a detachable SAE adapter terminal (3). FS 40, FS 40 C, FS 50, FS 50 C 27 unfavorable running behavior is unsatisfactory even though the air filter is clean and the carburetor is dirty N Check the electrode gap (A) and readjust if necessary - STIHL recommends that you have caused fouling of the...
...not use only spark plugs authorized by STIHL. N Screw the spark plug into the cylinder. See the chapter "Specifications" in this instruction manual Correct the problems that could ignite combustible fumes and cause a fire. operating at part throttle. 000BA039 KN 0000-GXX-1830-... with a detachable SAE adapter terminal (3). FS 40, FS 40 C, FS 50, FS 50 C 27 unfavorable running behavior is unsatisfactory even though the air filter is clean and the carburetor is dirty N Check the electrode gap (A) and readjust if necessary - STIHL recommends that you have caused fouling of the...
Instruction Manual
Page 37
Main Parts 1 11 14 12 13 English 2 34 5 9 6 78 # 10 19 18 15 17 16 1 Loop Handle 2 Carrying Ring 3 Stop Switch 4 Throttle Trigger Lockout 5 Throttle Trigger 6 Carburetor Adjusting Screws 7 Choke Lever 8 Air Filter Cover 9 Spark Plug Boot 10 Machine Support 11 Manual Fuel Pump 12 Fuel Filler Cap 13 Fuel Tank 14 Starter Grip 15 Muffler with Spark Arresting Screen 16 Mowing Head 17 Line Lmiting Blade 18 Deflector 19 Drive Tube # Serial Number 546BA015 KN FS 40, FS 40 C, FS 50, FS 50 C 35
Main Parts 1 11 14 12 13 English 2 34 5 9 6 78 # 10 19 18 15 17 16 1 Loop Handle 2 Carrying Ring 3 Stop Switch 4 Throttle Trigger Lockout 5 Throttle Trigger 6 Carburetor Adjusting Screws 7 Choke Lever 8 Air Filter Cover 9 Spark Plug Boot 10 Machine Support 11 Manual Fuel Pump 12 Fuel Filler Cap 13 Fuel Tank 14 Starter Grip 15 Muffler with Spark Arresting Screen 16 Mowing Head 17 Line Lmiting Blade 18 Deflector 19 Drive Tube # Serial Number 546BA015 KN FS 40, FS 40 C, FS 50, FS 50 C 35
Instruction Manual
Page 39
... with Easy2Start FS 40 C: 9.9 lbs (4.5 kg) FS 50 C: 9.9 lbs (4.5 kg) FS 50 C: with long shaft 10.1 lbs (4.6 kg) Overall length without cutting attachment and deflector FS 40, FS 40 C, FS 50, FS 50 C 37 The symbol may appear alone on small parts. output shaft speed (cutting attachment): 10,600 rpm FS 50, FS 50 C Displacement: 1.66 cu. For repairs of any component of this manual. STIHL recommends...
... with Easy2Start FS 40 C: 9.9 lbs (4.5 kg) FS 50 C: 9.9 lbs (4.5 kg) FS 50 C: with long shaft 10.1 lbs (4.6 kg) Overall length without cutting attachment and deflector FS 40, FS 40 C, FS 50, FS 50 C 37 The symbol may appear alone on small parts. output shaft speed (cutting attachment): 10,600 rpm FS 50, FS 50 C Displacement: 1.66 cu. For repairs of any component of this manual. STIHL recommends...
Instruction Manual
Page 40
...-specific waste disposal rules and regulations. A separate emissions control system warranty is sold subject to the STIHL Incorporated Limited Warranty Policy, available at an authorized dealer), parts, and labor. 38 FS 40, FS 40 C, FS 50, FS 50 C Where a warrantable condition exists, STIHL Incorporated will repair your small off -road equipment engines must not be designed, built and equipped...
...-specific waste disposal rules and regulations. A separate emissions control system warranty is sold subject to the STIHL Incorporated Limited Warranty Policy, available at an authorized dealer), parts, and labor. 38 FS 40, FS 40 C, FS 50, FS 50 C Where a warrantable condition exists, STIHL Incorporated will repair your small off -road equipment engines must not be designed, built and equipped...
Instruction Manual
Page 41
...leads to the determination that an emissions warranted part is English scheduled only for presenting your product, but STIHL Incorporated cannot deny warranty solely for the lack of receipts or for the cost of the emission test. FS 40, FS 40 C, FS 50, FS 50 C 39 The warranty repairs will be free ...of charge to the owner if it is purchased by the initial purchaser. STIHL Incorporated also warrants to the initial purchaser and each subsequent purchaser...
...leads to the determination that an emissions warranted part is English scheduled only for presenting your product, but STIHL Incorporated cannot deny warranty solely for the lack of receipts or for the cost of the emission test. FS 40, FS 40 C, FS 50, FS 50 C 39 The warranty repairs will be free ...of charge to the owner if it is purchased by the initial purchaser. STIHL Incorporated also warrants to the initial purchaser and each subsequent purchaser...
Instruction Manual
Page 42
...- Catalytic Converter (if applicable) - Fuel Cap - Limitations This Emission Control Systems Warranty shall not cover any authorized STIHL servicing dealer. Your emissions control system may require shorter maintenance intervals. Magneto or Electronic Ignition System (Ignition Module or ... neglect or lack of required maintenance, N repairs improperly performed or replacements not conforming to you including diagnosis, parts and labor. 40 FS 40, FS 40 C, FS 50, FS 50 C Fuel Pump - Choke (Cold Start Enrichment System) (if applicable) - Intake Manifold - Solenoid Valve ...
...- Catalytic Converter (if applicable) - Fuel Cap - Limitations This Emission Control Systems Warranty shall not cover any authorized STIHL servicing dealer. Your emissions control system may require shorter maintenance intervals. Magneto or Electronic Ignition System (Ignition Module or ... neglect or lack of required maintenance, N repairs improperly performed or replacements not conforming to you including diagnosis, parts and labor. 40 FS 40, FS 40 C, FS 50, FS 50 C Fuel Pump - Choke (Cold Start Enrichment System) (if applicable) - Intake Manifold - Solenoid Valve ...
Instruction Manual
Page 43
... only for regular inspection in the written instructions required by the Emission Warranty Parts List (see below) must be warranted for the warranty period defined in Subsection COVERAGE BY STIHL INCORPORATED, see below ) must be warranted for FS 40, FS 40 C, FS 50, FS 50 C 41 The use of a non-exempted add-on your small offroad equipment engine...
... only for regular inspection in the written instructions required by the Emission Warranty Parts List (see below) must be warranted for the warranty period defined in Subsection COVERAGE BY STIHL INCORPORATED, see below ) must be warranted for FS 40, FS 40 C, FS 50, FS 50 C 41 The use of a non-exempted add-on your small offroad equipment engine...
Instruction Manual
Page 44
... and fuel vapors), Fuel Line Fittings, Clamps, Fasteners. Trademarks STIHL Registered Trademarks STIHL® { K The color combination orange-grey (U.S. and #3,400,476) AutoCut® FARM BOSS® iCademy® MAGNUM® MasterWrench Service® MotoMix® OILOMATIC® 42 FS 40, FS 40 C, FS 50, FS 50 C Emission Warranty Parts List Air Filter, Carburetor (if applicable), Fuel Pump, Choke...
... and fuel vapors), Fuel Line Fittings, Clamps, Fasteners. Trademarks STIHL Registered Trademarks STIHL® { K The color combination orange-grey (U.S. and #3,400,476) AutoCut® FARM BOSS® iCademy® MAGNUM® MasterWrench Service® MotoMix® OILOMATIC® 42 FS 40, FS 40 C, FS 50, FS 50 C Emission Warranty Parts List Air Filter, Carburetor (if applicable), Fuel Pump, Choke...