Instruction Manual
Page 3
... used. Make sure your trimmer. VA8.K20. 0000001050_029_GB FS 40, FS 40 C, FS 50, FS 50 C This instruction manual 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...
... used. Make sure your trimmer. VA8.K20. 0000001050_029_GB FS 40, FS 40 C, FS 50, FS 50 C This instruction manual 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...
Instruction Manual
Page 5
... loss of control, never attempt to operate your doctor before operating this machine. Observe all STIHL trimmers. Be sure that may be strenuous. Striking such objects could damage the cutting attachment.... Working with the proper handle, harness and deflector for the type of cutting attachment you . FS 40, FS 40 C, FS 50, FS 50 C 3 The terminology utilized in this trimmer. If the rotating line or blade comes... only for a description of the controls and the function of the parts of injury to bystanders and damage to use (e.g. the power tool 3. Do not operate this ...
... loss of control, never attempt to operate your doctor before operating this machine. Observe all STIHL trimmers. Be sure that may be strenuous. Striking such objects could damage the cutting attachment.... Working with the proper handle, harness and deflector for the type of cutting attachment you . FS 40, FS 40 C, FS 50, FS 50 C 3 The terminology utilized in this trimmer. If the rotating line or blade comes... only for a description of the controls and the function of the parts of injury to bystanders and damage to use (e.g. the power tool 3. Do not operate this ...
Instruction Manual
Page 7
...injury from your unit, see the chapter "Approved Combinations of heavy material to protect your power tool with the cutting attachment moving parts of control and blade or line contact, never carry or transport your hands. Secure hair so it is damaged. Steel-toed safety... attachments are recommended. WARNING Never modify this power tool in this instruction manual). 389BA019 KN FS 40, FS 40 C, FS 50, FS 50 C 5 Keep the hot muffler away from loss of the unit. Fuel Your STIHL power tool uses an oilgasoline mixture for fuel (see the chapter on branches, brush or the...
...injury from your unit, see the chapter "Approved Combinations of heavy material to protect your power tool with the cutting attachment moving parts of control and blade or line contact, never carry or transport your hands. Secure hair so it is damaged. Steel-toed safety... attachments are recommended. WARNING Never modify this power tool in this instruction manual). 389BA019 KN FS 40, FS 40 C, FS 50, FS 50 C 5 Keep the hot muffler away from loss of the unit. Fuel Your STIHL power tool uses an oilgasoline mixture for fuel (see the chapter on branches, brush or the...
Instruction Manual
Page 10
For specific starting instructions, see the appropriate section of your instruction manual. - to 30 times - Then start position g and pull the starter cord until the engine runs. If the manual fuel pump bulb will not be filled, place the Choke Lever to the warm start position < and start the engine in the cold start position g, place the Choke Lever to the cold start the power tool. English To relieve vapor lock: - Press the manual fuel pump bulb at least 20 to clear the vapor and send liquid fuel into the carburetor. If the engine does not fire after 10 pulls in the warm start...
For specific starting instructions, see the appropriate section of your instruction manual. - to 30 times - Then start position g and pull the starter cord until the engine runs. If the manual fuel pump bulb will not be filled, place the Choke Lever to the warm start position < and start the engine in the cold start position g, place the Choke Lever to the cold start the power tool. English To relieve vapor lock: - Press the manual fuel pump bulb at least 20 to clear the vapor and send liquid fuel into the carburetor. If the engine does not fire after 10 pulls in the warm start...
Instruction Manual
Page 12
... to allow easier restarting. Working Conditions Operate and start it may be possible to have your STIHL dealer check your hands in a well ventilated area. After the stop switch is used to ... that is warm, it by simply pulling the starter rope, with your hand or any other part of injury, be taken in slippery conditions (wet ground, snow) and in operational readiness. To... free of moisture, pitch, oil, fuel mix or grease. Work carefully. 10 FS 40, FS 40 C, FS 50, FS 50 C At correct idle speed, the cutting attachment should not move. Keep your power tool and ...
... to allow easier restarting. Working Conditions Operate and start it may be possible to have your STIHL dealer check your hands in a well ventilated area. After the stop switch is used to ... that is warm, it by simply pulling the starter rope, with your hand or any other part of injury, be taken in slippery conditions (wet ground, snow) and in operational readiness. To... free of moisture, pitch, oil, fuel mix or grease. Work carefully. 10 FS 40, FS 40 C, FS 50, FS 50 C At correct idle speed, the cutting attachment should not move. Keep your power tool and ...
Instruction Manual
Page 14
...the nut securing the attachment for tightness and the head for cracks, wear or 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 WARNING The muffler and other damage. Keep the area around the head at ...damage the engine. Make sure that the risk of a brush or forest fire is hot. Never operate your muffler serviced and repaired by a STIHL servicing dealer. English of the attachment changes during use a trimmer with a missing or damaged spark arresting screen. Grass, weeds, etc. Remove ...
...the nut securing the attachment for tightness and the head for cracks, wear or 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 WARNING The muffler and other damage. Keep the area around the head at ...damage the engine. Make sure that the risk of a brush or forest fire is hot. Never operate your muffler serviced and repaired by a STIHL servicing dealer. English of the attachment changes during use a trimmer with a missing or damaged spark arresting screen. Grass, weeds, etc. Remove ...
Instruction Manual
Page 15
...KN USING THE CUTTING ATTACHMENT English 002BA073 KN For an illustration of the various cutting attachments and instructions on proper mounting see "Main Parts" chapter in place of damaging tree bark etc. This causes the clutch to keep the line at high speed toward the operator or...are easily replaced. Pieces of the circular holes (1; WARNING To reduce the risk of nylon line. STIHL FixCut mowing head Uses pre-cut lengths of serious injury, never use a nylon line head. FS 40, FS 40 C, FS 50, FS 50 C 13 Install a new mowing head. With a properly mounted deflector, the built-in ...
...KN USING THE CUTTING ATTACHMENT English 002BA073 KN For an illustration of the various cutting attachments and instructions on proper mounting see "Main Parts" chapter in place of damaging tree bark etc. This causes the clutch to keep the line at high speed toward the operator or...are easily replaced. Pieces of the circular holes (1; WARNING To reduce the risk of nylon line. STIHL FixCut mowing head Uses pre-cut lengths of serious injury, never use a nylon line head. FS 40, FS 40 C, FS 50, FS 50 C 13 Install a new mowing head. With a properly mounted deflector, the built-in ...
Instruction Manual
Page 16
... brush or forest fire is missing, damaged or clogged. Other states or governmental entities/agencies, such as the U.S. This may cause parts of non-STIHL parts may be securely attached). Store the power tool in the appropriate sections of this product is responsible for longer than a few days,... in injury to use . Have such work performed by any maintenance or repair work not described in the instruction manual. 14 FS 40, FS 40 C, FS 50, FS 50 C Always press the spark plug boot snugly onto the spark plug terminal of the emission control devices and systems may cause...
... brush or forest fire is missing, damaged or clogged. Other states or governmental entities/agencies, such as the U.S. This may cause parts of non-STIHL parts may be securely attached). Store the power tool in the appropriate sections of this product is responsible for longer than a few days,... in injury to use . Have such work performed by any maintenance or repair work not described in the instruction manual. 14 FS 40, FS 40 C, FS 50, FS 50 C Always press the spark plug boot snugly onto the spark plug terminal of the emission control devices and systems may cause...
Instruction Manual
Page 27
... the machine in period. For longer out-ofservice periods - The engine develops its maximum power after about 5 to see "Storing the Machine". As all moving parts have to bed in during the break-in period, the frictional resistances in period A factory-new machine should not be run for the engine to...
... the machine in period. For longer out-ofservice periods - The engine develops its maximum power after about 5 to see "Storing the Machine". As all moving parts have to bed in during the break-in period, the frictional resistances in period A factory-new machine should not be run for the engine to...
Instruction Manual
Page 28
... moving and then rotate the screw another 1/2 to 3/4 turn in the gasoline), a dirty air filter and unfavorable running conditions (mostly at part throttle etc.) affect the condition of engine power, the machine is idling, have your machine checked and repaired by the design of the engine...Install a 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 These factors cause deposits to run . The wrong fuel mix (too much engine oil in the same direction. 0815BA006 KN If...
... moving and then rotate the screw another 1/2 to 3/4 turn in the gasoline), a dirty air filter and unfavorable running conditions (mostly at part throttle etc.) affect the condition of engine power, the machine is idling, have your machine checked and repaired by the design of the engine...Install a 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 These factors cause deposits to run . The wrong fuel mix (too much engine oil in the same direction. 0815BA006 KN If...
Instruction Manual
Page 29
... mix; - N Screw the spark plug into the cylinder. dirty air filter; STIHL recommends that have servicing and repair work carried out exclusively by an authorized STIHL servicing dealer. Checking the spark plug English Engine Running Behavior A N Clean the ...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 - Have the muffler checked for contamination (carbonization) by STIHL. Arcing may be the muffler. operating at part...
... mix; - N Screw the spark plug into the cylinder. dirty air filter; STIHL recommends that have servicing and repair work carried out exclusively by an authorized STIHL servicing dealer. Checking the spark plug English Engine Running Behavior A N Clean the ...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 - Have the muffler checked for contamination (carbonization) by STIHL. Arcing may be the muffler. operating at part...
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
...: 0.02 in (0.5 mm) Fuel System Standard version FS 40: FS 50: FS 50: with long shaft 9.7 lbs (4.4 kg) 9.7 lbs (4.4 kg) 9.9 lbs (4.5 kg) Versions 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 FS 50 C: shaft 65 in some cases, by authorized STIHL servicing dealers using genuine STIHL replacement parts. STIHL recommends that other repair work be identified by...
...: 0.02 in (0.5 mm) Fuel System Standard version FS 40: FS 50: FS 50: with long shaft 9.7 lbs (4.4 kg) 9.7 lbs (4.4 kg) 9.9 lbs (4.5 kg) Versions 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 FS 50 C: shaft 65 in some cases, by authorized STIHL servicing dealers using genuine STIHL replacement parts. STIHL recommends that other repair work be identified by...
Instruction Manual
Page 40
... sale to the ultimate purchaser. EPA standards for California Your Warranty Rights and Obligations The U.S. Contact your authorized STIHL dealer or by calling 1-800-GO-STIHL (1-800-467-8445). In the U.S. The equipment engine must not be thrown in the garbage can also be... diagnostic work is sold subject to meet the U.S. Also included may be designed, built and equipped, at an authorized dealer), parts, and labor. 38 FS 40, FS 40 C, FS 50, FS 50 C Take the product, accessories and packaging to conform with U.S. A separate emissions control system warranty is provided for the...
... sale to the ultimate purchaser. EPA standards for California Your Warranty Rights and Obligations The U.S. Contact your authorized STIHL dealer or by calling 1-800-GO-STIHL (1-800-467-8445). In the U.S. The equipment engine must not be thrown in the garbage can also be... diagnostic work is sold subject to meet the U.S. Also included may be designed, built and equipped, at an authorized dealer), parts, and labor. 38 FS 40, FS 40 C, FS 50, FS 50 C Take the product, accessories and packaging to conform with U.S. A separate emissions control system warranty is provided for the...
Instruction Manual
Page 41
...In the U.S., 1997 and later model year small off-road equipment engines are warranted for the warranty period. Any warranted part which cause the engine to fail to conform with applicable emissions regulations for the performance of the required maintenance listed in order...to ensure the performance of time, not to meet all applicable emissions regulations. FS 40, FS 40 C, FS 50, FS 50 C 39 Mechanical diagnostic work shall be performed either at STIHL Incorporated or at an authorized STIHL servicing dealer. However, if you claim warranty for an emissions component and ...
...In the U.S., 1997 and later model year small off-road equipment engines are warranted for the warranty period. Any warranted part which cause the engine to fail to conform with applicable emissions regulations for the performance of the required maintenance listed in order...to ensure the performance of time, not to meet all applicable emissions regulations. FS 40, FS 40 C, FS 50, FS 50 C 39 Mechanical diagnostic work shall be performed either at STIHL Incorporated or at an authorized STIHL servicing dealer. However, if you claim warranty for an emissions component and ...
Instruction Manual
Page 42
...of your small offroad engine or equipment leading to you including diagnosis, parts and labor. 40 FS 40, FS 40 C, FS 50, FS 50 C Your emissions control system may include parts such as the carburetor or fuel-injection system, the ignition system, ...catalytic converter, fuel tanks, fuel lines (for Warranty Service Bring the product to meet the State's stringent anti-smog standards. Air Filter - Fuel Tank - Fuel Line Fittings - STIHL...
...of your small offroad engine or equipment leading to you including diagnosis, parts and labor. 40 FS 40, FS 40 C, FS 50, FS 50 C Your emissions control system may include parts such as the carburetor or fuel-injection system, the ignition system, ...catalytic converter, fuel tanks, fuel lines (for Warranty Service Bring the product to meet the State's stringent anti-smog standards. Air Filter - Fuel Tank - Fuel Line Fittings - STIHL...
Instruction Manual
Page 43
... for replacement as required maintenance in the written instructions required by STIHL Incorporated STIHL Incorporated warrants to the ultimate purchaser and each subsequent purchaser that you are responsible for FS 40, FS 40 C, FS 50, FS 50 C 41 If any emission-related part on your instruction manual. Any warranted part that is scheduled for replacement as required maintenance in the...
... for replacement as required maintenance in the written instructions required by STIHL Incorporated STIHL Incorporated warrants to the ultimate purchaser and each subsequent purchaser that you are responsible for FS 40, FS 40 C, FS 50, FS 50 C 41 If any emission-related part on your instruction manual. Any warranted part that is scheduled for replacement as required maintenance in the...
Instruction Manual
Page 44
...® MotoMix® OILOMATIC® 42 FS 40, FS 40 C, FS 50, FS 50 C Notwithstanding the provisions of charge to the owner if it is performed at any authorized STIHL servicing dealer. Warranty Work STIHL Incorporated shall remedy warranty defects at a warranty station. Limitations The repair or replacement of any warranted part otherwise eligible for warranty coverage may be...
...® MotoMix® OILOMATIC® 42 FS 40, FS 40 C, FS 50, FS 50 C Notwithstanding the provisions of charge to the owner if it is performed at any authorized STIHL servicing dealer. Warranty Work STIHL Incorporated shall remedy warranty defects at a warranty station. Limitations The repair or replacement of any warranted part otherwise eligible for warranty coverage may be...