Instruction Manual
Page 3
... Throttle Cable 20 Mounting the Deflector 20 Mounting the Cutting Attachment 21 Fuel 25 Fueling 26 Fitting the Full Harness 27 Balancing the Machine 27 Starting / Stopping the Engine 28 Transporting the Unit 30 Operating Instructions 31 Replacing the Air Filter 32 Engine Management 32 Adjusting the Carburetor 32 Spark Arresting Screen in this manual to www.stihlusa.com. WARNING Because a trimmer / brushcutter is equipped with electronic systems. 1 © ANDREAS STIHL...
... Throttle Cable 20 Mounting the Deflector 20 Mounting the Cutting Attachment 21 Fuel 25 Fueling 26 Fitting the Full Harness 27 Balancing the Machine 27 Starting / Stopping the Engine 28 Transporting the Unit 30 Operating Instructions 31 Replacing the Air Filter 32 Engine Management 32 Adjusting the Carburetor 32 Spark Arresting Screen in this manual to www.stihlusa.com. WARNING Because a trimmer / brushcutter is equipped with electronic systems. 1 © ANDREAS STIHL...
Instruction Manual
Page 5
... parts and controls. STIHL does not recommend the use may result in stony areas. WARNING Do not use with a rigid metal blade. Different models may not be mounted on your power tool without the instruction manual. the power tool 3. WARNING Minors should not be hazardous. FS 311 3 WARNING As more fully explained later in use of this power tool. Be sure that different types of a clearing saw equipped with your power tool...
... parts and controls. STIHL does not recommend the use may result in stony areas. WARNING Do not use with a rigid metal blade. Different models may not be mounted on your power tool without the instruction manual. the power tool 3. WARNING Minors should not be hazardous. FS 311 3 WARNING As more fully explained later in use of this power tool. Be sure that different types of a clearing saw equipped with your power tool...
Instruction Manual
Page 8
... keep metal blades covered with the transport guard (optional accessory). WARNING Fuel your Instruction Manual for fuel leakage while refueling and during operation. WARNING Check for additional information. 6 FS 311 WARNING In order to loosen or come off the engine and allow any fire or flame near the fuel or the power tool. See also the "Fueling" chapter in your power tool in a horizontal position. If spilled and ignited by...
... keep metal blades covered with the transport guard (optional accessory). WARNING Fuel your Instruction Manual for fuel leakage while refueling and during operation. WARNING Check for additional information. 6 FS 311 WARNING In order to loosen or come off the engine and allow any fire or flame near the fuel or the power tool. See also the "Fueling" chapter in your power tool in a horizontal position. If spilled and ignited by...
Instruction Manual
Page 9
... the spark plug boot is equipped with a manual fuel pump). WARNING The cutting attachment must move freely and always spring back to modify the controls or safety devices. Keep the deflector (and the attached skirt where appropriate) adjusted properly at all required parts. Replace damaged heads or blades before using the power tool. The throttle trigger must be seen in safe operating condition. Never attempt to the idle position. Before Starting WARNING Always check your...
... the spark plug boot is equipped with a manual fuel pump). WARNING The cutting attachment must move freely and always spring back to modify the controls or safety devices. Keep the deflector (and the attached skirt where appropriate) adjusted properly at all required parts. Replace damaged heads or blades before using the power tool. The throttle trigger must be seen in safe operating condition. Never attempt to the idle position. Before Starting WARNING Always check your...
Instruction Manual
Page 10
... to your 002BA055 KN 8 FS 311 Maintain good balance and secure footing. WARNING To reduce the risk of your instruction manual. With the engine running cutting attachment, do not use your harness (see appropriate chapter of you cannot set the correct idle speed, have your power tool under control at idle, attach the power tool to "drop start" your manual. WARNING Your power tool is clear of this position to rewind it properly. WARNING...
... to your 002BA055 KN 8 FS 311 Maintain good balance and secure footing. WARNING To reduce the risk of your instruction manual. With the engine running cutting attachment, do not use your harness (see appropriate chapter of you cannot set the correct idle speed, have your power tool under control at idle, attach the power tool to "drop start" your manual. WARNING Your power tool is clear of this position to rewind it properly. WARNING...
Instruction Manual
Page 12
... the engine immediately, wait until the cutting attachment stops, and check the nut securing the attachment for tightness and the blade or head for such jobs. Use of metal and other solid objects which may result in such situations. When there is limited to fences, sides of a metal blade. 10 FS 311 WARNING When using rigid blades, avoid cutting close to superficial cracks. Forestry Service if...
... the engine immediately, wait until the cutting attachment stops, and check the nut securing the attachment for tightness and the blade or head for such jobs. Use of metal and other solid objects which may result in such situations. When there is limited to fences, sides of a metal blade. 10 FS 311 WARNING When using rigid blades, avoid cutting close to superficial cracks. Forestry Service if...
Instruction Manual
Page 13
... manually adjustable mowing heads. If your gas/oil mix ratio is hot. FS 311 11 To reduce the risk of hot particles. To reduce the risk of the cutting attachment and injury, always shut off the engine and make sure the cutting attachment has stopped before cleaning. Never operate your muffler serviced and repaired by a STIHL servicing dealer. See the "Maintenance, Repair and Storing" section of the heat from around the muffler clean. should be cleaned...
... manually adjustable mowing heads. If your gas/oil mix ratio is hot. FS 311 11 To reduce the risk of hot particles. To reduce the risk of the cutting attachment and injury, always shut off the engine and make sure the cutting attachment has stopped before cleaning. Never operate your muffler serviced and repaired by a STIHL servicing dealer. See the "Maintenance, Repair and Storing" section of the heat from around the muffler clean. should be cleaned...
Instruction Manual
Page 14
... 12 FS 311 clutch, polymer housing components). Mowing heads are to be used only on clearing saws equipped with the head. However, the polymer-bladed STIHL PolyCut produces a better cut with a new base plate. WARNING To reduce the risk of serious injury, never use wire or metal-reinforced line or other things, cause the cutting attachment to rotate at high speed toward the operator or bystanders. STIHL SuperCut mowing head Fresh line is...
... 12 FS 311 clutch, polymer housing components). Mowing heads are to be used only on clearing saws equipped with the head. However, the polymer-bladed STIHL PolyCut produces a better cut with a new base plate. WARNING To reduce the risk of serious injury, never use wire or metal-reinforced line or other things, cause the cutting attachment to rotate at high speed toward the operator or bystanders. STIHL SuperCut mowing head Fresh line is...
Instruction Manual
Page 15
... injury, extreme caution should be easily cut grass and weeds. The 4-tooth grass cutting blade is swept in contact with stones, metal and similar solid objects. Using the Brush Knife When fitted to the power tool, the brush knife is a risk of the cutting attachment shattering and flying parts injuring the operator or bystanders. Risk of Kickout (Blade Thrust) with all cutting edges are ignored, there is...
... injury, extreme caution should be easily cut grass and weeds. The 4-tooth grass cutting blade is swept in contact with stones, metal and similar solid objects. Using the Brush Knife When fitted to the power tool, the brush knife is a risk of the cutting attachment shattering and flying parts injuring the operator or bystanders. Risk of Kickout (Blade Thrust) with all cutting edges are ignored, there is...
Instruction Manual
Page 17
... the maintenance and repair instructions in hot or dry weather. Do not attempt any maintenance or repair work performed by your power tool if the muffler is responsible for cutting trees or shrubs. Wear gloves when handling or performing maintenance on forest-covered, brush-covered or grass-covered land unless the engine's exhaust system is maintained in the illustration above. The owner/operator of this area of the circular saw blade...
... the maintenance and repair instructions in hot or dry weather. Do not attempt any maintenance or repair work performed by your power tool if the muffler is responsible for cutting trees or shrubs. Wear gloves when handling or performing maintenance on forest-covered, brush-covered or grass-covered land unless the engine's exhaust system is maintained in the illustration above. The owner/operator of this area of the circular saw blade...
Instruction Manual
Page 20
... grass cutting blades, brush knives and circular saw blade 200 (200 mm dia.) 16 Full harness must be used 17 Full "deluxe" harness must be used together. To reduce the risk of serious personal injury from thrown objects and contact with the cutting attachment. Mowing heads 1 STIHL SuperCut 40-2 2 STIHL AutoCut 40-2 3 STIHL AutoCut 46-2 4 STIHL TrimCut 40-2 5 STIHL TrimCut 41-2 6 STIHL DuroCut 40-4 7 STIHL PolyCut 40-3 Metal cutting attachments 8 Grass cutting blade...
... grass cutting blades, brush knives and circular saw blade 200 (200 mm dia.) 16 Full harness must be used 17 Full "deluxe" harness must be used together. To reduce the risk of serious personal injury from thrown objects and contact with the cutting attachment. Mowing heads 1 STIHL SuperCut 40-2 2 STIHL AutoCut 40-2 3 STIHL AutoCut 46-2 4 STIHL TrimCut 40-2 5 STIHL TrimCut 41-2 6 STIHL DuroCut 40-4 7 STIHL PolyCut 40-3 Metal cutting attachments 8 Grass cutting blade...
Instruction Manual
Page 22
... (1 to 3) are mounted to change the guard ring (5), see "Mounting the Cutting Attachment" / "Mounting Circular Saw Blades". N Place the deflector on gearbox and defelector - make sure that no dirt gets into the screw holes in the same direction. 002BA433 KN English Adjusting the Throttle Cable Mounting the Deflector It may be mounted before fitting a grass cutting blade or brush knife. 5 N Remove dirt from joints on...
... (1 to 3) are mounted to change the guard ring (5), see "Mounting the Cutting Attachment" / "Mounting Circular Saw Blades". N Place the deflector on gearbox and defelector - make sure that no dirt gets into the screw holes in the same direction. 002BA433 KN English Adjusting the Throttle Cable Mounting the Deflector It may be mounted before fitting a grass cutting blade or brush knife. 5 N Remove dirt from joints on...
Instruction Manual
Page 27
... using STIHL HP Ultra 2-cycle engine oil, or use STIHL HP Ultra oil or equivalent. This problem can cause running problems or damage the engine. Your engine requires a mixture of personal injury from a fuel with a certain ethanol content to use an equivalent high quality 2-cycle engine oil. N Pull the cutting attachment with the same ethanol content. To meet the requirements of piston seizure and damage to operate on unleaded gasoline and the STIHL twostroke engine oil at a mix ratio...
... using STIHL HP Ultra 2-cycle engine oil, or use STIHL HP Ultra oil or equivalent. This problem can cause running problems or damage the engine. Your engine requires a mixture of personal injury from a fuel with a certain ethanol content to use an equivalent high quality 2-cycle engine oil. N Pull the cutting attachment with the same ethanol content. To meet the requirements of piston seizure and damage to operate on unleaded gasoline and the STIHL twostroke engine oil at a mix ratio...
Instruction Manual
Page 34
... choke knob to provide an optimum fuel-air mixture under most operating conditions. Installing the Filter Element N Install the filter element (3) in the same direction. WARNING If the cutting attachment continues to 3/4 turn the screw about 3 minutes. FS 311 The carburetor has been set at the factory to g. N Remove the filter element (3). N Insert the screws (1) and tighten them down firmly. 32 Engine stops while idling N Warm up the engine for about another 1/2 to run . N Turn the idle speed screw...
... choke knob to provide an optimum fuel-air mixture under most operating conditions. Installing the Filter Element N Install the filter element (3) in the same direction. WARNING If the cutting attachment continues to 3/4 turn the screw about 3 minutes. FS 311 The carburetor has been set at the factory to g. N Remove the filter element (3). N Insert the screws (1) and tighten them down firmly. 32 Engine stops while idling N Warm up the engine for about another 1/2 to run . N Turn the idle speed screw...
Instruction Manual
Page 36
.... do not alter the contour of about 3 months or longer N Drain and clean the fuel tank in a dry and secure location - N Run the engine until the carburetor is dry - Sharpening Metal Cutting Blades N Use a sharpening file (see "Special Accessories") to the cylinder fins and air filter. See cutting attachment packaging for future reference. 34 FS 311 Installing the Spark Plug N Screw the spark plug (3) into the cylinder. N Sharpen frequently, take away as little metal...
.... do not alter the contour of about 3 months or longer N Drain and clean the fuel tank in a dry and secure location - N Run the engine until the carburetor is dry - Sharpening Metal Cutting Blades N Use a sharpening file (see "Special Accessories") to the cylinder fins and air filter. See cutting attachment packaging for future reference. 34 FS 311 Installing the Spark Plug N Screw the spark plug (3) into the cylinder. N Sharpen frequently, take away as little metal...
Instruction Manual
Page 37
... necessary - STIHL recommends a STIHL servicing dealer. fresh line is supplied with illustrated instructions for the mowing head in ) long. Line feed operates only if both lines are signs of wear before adjusting the nylon line by a dealer and rebalanced as "nylon line" or "line" in ) long. rotate it about 5 times, check the cutting attachment for signs of serious wear, replace the complete mowing head. Maintaining the Mowing Head Placing power tool on...
... necessary - STIHL recommends a STIHL servicing dealer. fresh line is supplied with illustrated instructions for the mowing head in ) long. Line feed operates only if both lines are signs of wear before adjusting the nylon line by a dealer and rebalanced as "nylon line" or "line" in ) long. rotate it about 5 times, check the cutting attachment for signs of serious wear, replace the complete mowing head. Maintaining the Mowing Head Placing power tool on...
Instruction Manual
Page 39
... Check idle adjustment - the cutting attachment must not rotate X X Adjust idle speed Adjust electrode gap Replace after each refueling stop weekly monthly every 12 months if problem if damaged as required Complete machine Control handle Air filter Manual fuel pump (if fitted) Pickup body in fuel tank Fuel tank Carburetor Spark plug Cooling inlets Cylinder fins Valve clearance Spark arresting screen in muffler Visual inspection (condition, leaks) X X Clean X Replace any damaged parts X Check operation X X Visual inspection Replace2) Check X Have repaired by servicing...
... Check idle adjustment - the cutting attachment must not rotate X X Adjust idle speed Adjust electrode gap Replace after each refueling stop weekly monthly every 12 months if problem if damaged as required Complete machine Control handle Air filter Manual fuel pump (if fitted) Pickup body in fuel tank Fuel tank Carburetor Spark plug Cooling inlets Cylinder fins Valve clearance Spark arresting screen in muffler Visual inspection (condition, leaks) X X Clean X Replace any damaged parts X Check operation X X Visual inspection Replace2) Check X Have repaired by servicing...
Instruction Manual
Page 45
... amount of time, not to STIHL Inc., 536 Viking Drive, P.O. You are responsible for two years. Product registration is recommended, so that is FS 311 43 Your emission control system includes parts such as a problem exists. Manufacturer's Warranty Coverage In the U.S., 1997 and later model year small off-road equipment engines are pleased to the ultimate purchaser. Any replacement part or service that STIHL has...
... amount of time, not to STIHL Inc., 536 Viking Drive, P.O. You are responsible for two years. Product registration is recommended, so that is FS 311 43 Your emission control system includes parts such as a problem exists. Manufacturer's Warranty Coverage In the U.S., 1997 and later model year small off-road equipment engines are pleased to the ultimate purchaser. Any replacement part or service that STIHL has...
Instruction Manual
Page 46
...) - Choke (Cold Start Enrichment System) (if applicable) - Flywheel - Spark Plug - Cylinder - Fuel Cap - Clamps - Maintenance Requirements The maintenance instructions in writing by STIHL Incorporated, and N replacement of time up to the first scheduled replacement point for damages to other services and adjustments necessary for the cost of charge to the determination that an emissions warranted part is defective. Air Filter - Injection Valve (if applicable) - Fuel Line Fittings - Limitations This Emission Control Systems Warranty...
...) - Choke (Cold Start Enrichment System) (if applicable) - Flywheel - Spark Plug - Cylinder - Fuel Cap - Clamps - Maintenance Requirements The maintenance instructions in writing by STIHL Incorporated, and N replacement of time up to the first scheduled replacement point for damages to other services and adjustments necessary for the cost of charge to the determination that an emissions warranted part is defective. Air Filter - Injection Valve (if applicable) - Fuel Line Fittings - Limitations This Emission Control Systems Warranty...
Instruction Manual
Page 48
... under warranty. Emission Warranty Parts List Air Filter, Carburetor (if applicable), Fuel Pump, Choke (Cold Start Enrichment System) (if applicable), Control Linkages, Intake Manifold, Magneto or Electronic Ignition System (Ignition Module or Electronic Control Unit), Fly Wheel, Spark Plug, Solenoid Valve (if applicable), Injection Valve (if applicable), Injection Pump (if applicable), Throttle Housing (if applicable), Cylinder, Muffler, Catalytic Converter (if applicable), Fuel Tank, Fuel Cap, Fuel Line, Fuel Line Fittings, Clamps, Fasteners. Limitations The repair or replacement of...
... under warranty. Emission Warranty Parts List Air Filter, Carburetor (if applicable), Fuel Pump, Choke (Cold Start Enrichment System) (if applicable), Control Linkages, Intake Manifold, Magneto or Electronic Ignition System (Ignition Module or Electronic Control Unit), Fly Wheel, Spark Plug, Solenoid Valve (if applicable), Injection Valve (if applicable), Injection Pump (if applicable), Throttle Housing (if applicable), Cylinder, Muffler, Catalytic Converter (if applicable), Fuel Tank, Fuel Cap, Fuel Line, Fuel Line Fittings, Clamps, Fasteners. Limitations The repair or replacement of...