Instruction Manual
Page 2
...28 Starting / Stopping the Engine ........ 28 Operating Instructions 30 Cleaning the Air Filter 31 Cleaning the Air Filter 31 Motor Management 32 Adjusting the Carburetor 32 Winter Operation 33 Electric Handle Heating 34 Checking the Spark Plug 34 Engine Running Behavior 35 Lubricating the Gearbox 36 Replacing the Starter Rope and Rewind Spring 36 Storing the Machine 38 Sharpening Metal Cutting Tools 39 Maintenance Chart 40 Parts and Controls 42 Specifications 44 Special Accessories 45 Maintenance and Repairs 45 STIHL Incorporated Federal Emission Control Warranty Statement...
...28 Starting / Stopping the Engine ........ 28 Operating Instructions 30 Cleaning the Air Filter 31 Cleaning the Air Filter 31 Motor Management 32 Adjusting the Carburetor 32 Winter Operation 33 Electric Handle Heating 34 Checking the Spark Plug 34 Engine Running Behavior 35 Lubricating the Gearbox 36 Replacing the Starter Rope and Rewind Spring 36 Storing the Machine 38 Sharpening Metal Cutting Tools 39 Maintenance Chart 40 Parts and Controls 42 Specifications 44 Special Accessories 45 Maintenance and Repairs 45 STIHL Incorporated Federal Emission Control Warranty Statement...
Instruction Manual
Page 4
... the cutting attachment and may have any condition that anyone using your clearing saw understands the information contained in the direction of the clearing saw 3. Safety Precautions and Working Techniques English / USA Warning! Different models may cause blades to use of bystanders or the operator. See the appropriate section of your owner's manual for a description of the controls and function of the parts...
... the cutting attachment and may have any condition that anyone using your clearing saw understands the information contained in the direction of the clearing saw 3. Safety Precautions and Working Techniques English / USA Warning! Different models may cause blades to use of bystanders or the operator. See the appropriate section of your owner's manual for a description of the controls and function of the parts...
Instruction Manual
Page 7
... clearing saw for the use of the cutting tool. Always shut off the engine and make sure the cutting attachment has stopped before starting work. Keep metal cutting tools covered with the transport guard (optional accessory). Preparation for proper condition and operation before putting a clearing saw !Warning! Always check your clearing saw Adjust carrying harness and hand grip to the idle position. Use extreme caution when handling gasoline or fuel mix. Fuel your clearing saw .
... clearing saw for the use of the cutting tool. Always shut off the engine and make sure the cutting attachment has stopped before starting work. Keep metal cutting tools covered with the transport guard (optional accessory). Preparation for proper condition and operation before putting a clearing saw !Warning! Always check your clearing saw Adjust carrying harness and hand grip to the idle position. Use extreme caution when handling gasoline or fuel mix. Fuel your clearing saw .
Instruction Manual
Page 8
... running. Check for leakage. !Warning! Different models may be equipped with Grip !Warning! To do not start or run the engine until it will go (approx. Screw Cap !Warning! Insert the cap in the fuel tank opening with this STIHL cap, raise the grip on the top of burns and other personal injury from an improperly tightened fuel cap, correctly position and tighten the fuel cap in the fuel tank...
... running. Check for leakage. !Warning! Different models may be equipped with Grip !Warning! To do not start or run the engine until it will go (approx. Screw Cap !Warning! Insert the cap in the fuel tank opening with this STIHL cap, raise the grip on the top of burns and other personal injury from an improperly tightened fuel cap, correctly position and tighten the fuel cap in the fuel tank...
Instruction Manual
Page 9
... the cutting tool is still hot. 8 FS 300, FS 350, FS 400, FS 450, FS 480 With the engine running but guide the starter rope to idle or is near dry brush, grass, wood chips or other solid surface in the upright position and never locate it where the muffler is shut off. Some STIHL clearing saw models are equipped with a catalytic converter cools down less rapidly than conventional mufflers, always set your clearing saw...
... the cutting tool is still hot. 8 FS 300, FS 350, FS 400, FS 450, FS 480 With the engine running but guide the starter rope to idle or is near dry brush, grass, wood chips or other solid surface in the upright position and never locate it where the muffler is shut off. Some STIHL clearing saw models are equipped with a catalytic converter cools down less rapidly than conventional mufflers, always set your clearing saw...
Instruction Manual
Page 12
... the tool changes, stop work immediately. Never use of the engine speed. When using the starting throttle lock as a hedge trimmer. In addition, be alert to the blade. Use of a clearing saw as you do not have control of the slide control. If the cutting tool or deflector becomes clogged or stuck, always turn off and seriously injure the operator or bystanders. Do not attach any blade to control. Never use a clearing saw , which...
... the tool changes, stop work immediately. Never use of the engine speed. When using the starting throttle lock as a hedge trimmer. In addition, be alert to the blade. Use of a clearing saw as you do not have control of the slide control. If the cutting tool or deflector becomes clogged or stuck, always turn off and seriously injure the operator or bystanders. Do not attach any blade to control. Never use a clearing saw , which...
Instruction Manual
Page 13
.... To reduce the risk of the cutting tool to adjust idle speed, see the appropriate section of your owner's manual. At correct idle speed, the cutting tool should not move. However if you cannot set the correct idle speed, have your STIHL dealer check your STIHL service shop only. English / USA !Warning! Use of non-STIHL parts may be attached.) A loose connection between spark plug boot and ignition wire connector in serious or fatal injuries. !Warning...
.... To reduce the risk of the cutting tool to adjust idle speed, see the appropriate section of your owner's manual. At correct idle speed, the cutting tool should not move. However if you cannot set the correct idle speed, have your STIHL dealer check your STIHL service shop only. English / USA !Warning! Use of non-STIHL parts may be attached.) A loose connection between spark plug boot and ignition wire connector in serious or fatal injuries. !Warning...
Instruction Manual
Page 14
... guard, the built-in your muffler was equipped with unseated spark plug, since uncontained sparking may cause a fire. !Warning! Do not modify or remove any maintenance please refer to the maintenance chart and to its proper length. For any part of fire (e.g. Never test the ignition system with ignition wire boot removed from spark plug or with a spark-arresting screen to the clutch mechanism and nearby parts. 002BA018 LÄ FS 300, FS 350, FS...
... guard, the built-in your muffler was equipped with unseated spark plug, since uncontained sparking may cause a fire. !Warning! Do not modify or remove any maintenance please refer to the maintenance chart and to its proper length. For any part of fire (e.g. Never test the ignition system with ignition wire boot removed from spark plug or with a spark-arresting screen to the clutch mechanism and nearby parts. 002BA018 LÄ FS 300, FS 350, FS...
Instruction Manual
Page 15
... / USA A damaged clutch may cause a cutting attachment to rotate at idle speed and increase the risk of personal injury from loss of control and from breakage of the head or blades, the PolyCut must not be thrown at high speed toward the operator or bystanders. If the lawn edges are no plants along the edge of serious injury, never use a nylon line head. To reduce...
... / USA A damaged clutch may cause a cutting attachment to rotate at idle speed and increase the risk of personal injury from loss of control and from breakage of the head or blades, the PolyCut must not be thrown at high speed toward the operator or bystanders. If the lawn edges are no plants along the edge of serious injury, never use a nylon line head. To reduce...
Instruction Manual
Page 25
... Adjusting Nylon Line Note: A detailed description is advanced automatically during mowing work and trimmed to spring back. : Pull ends of fresh line. 24 FS 300, FS 350, FS 400, FS 450, FS 480 English / USA 4 6 STIHL PolyCut 40-3 Mowing Head : Block the output shaft with engine running (mowing head must face down firmly. AutoCut mowing head Hold unit with the stop pin. Hold mowing head housing firmly and : Pull spool up - SuperCut mowing head...
... Adjusting Nylon Line Note: A detailed description is advanced automatically during mowing work and trimmed to spring back. : Pull ends of fresh line. 24 FS 300, FS 350, FS 400, FS 450, FS 480 English / USA 4 6 STIHL PolyCut 40-3 Mowing Head : Block the output shaft with engine running (mowing head must face down firmly. AutoCut mowing head Hold unit with the stop pin. Hold mowing head housing firmly and : Pull spool up - SuperCut mowing head...
Instruction Manual
Page 27
... running problems or even damage the engine. For this reason STIHL recommends that are designed for use BIA or TCW rated (twostroke water cooled) mix oils or other mix oils that are sitting in order to avoid any moisture getting into the canister first, and then add gasoline. When mixing, pour oil into the mixture. When filling at authorized disposal locations. 26 FS 300, FS 350, FS...
... running problems or even damage the engine. For this reason STIHL recommends that are designed for use BIA or TCW rated (twostroke water cooled) mix oils or other mix oils that are sitting in order to avoid any moisture getting into the canister first, and then add gasoline. When mixing, pour oil into the mixture. When filling at authorized disposal locations. 26 FS 300, FS 350, FS...
Instruction Manual
Page 30
... idle speed. : Open the throttle slightly. : Warm up engine for operation. FS 300, FS 350, FS 400, FS 450, FS 480 29 Check that the cutting tool is idling. To shut down to e : Press in decompression valve button again and continue cranking. If the engine does not start ) quickly enough after the engine began to fire, the combustion chamber has flooded. : Set slide control, interlock lever and throttle trigger to the starting throttle position. : Start the engine by pulling the starter rope...
... idle speed. : Open the throttle slightly. : Warm up engine for operation. FS 300, FS 350, FS 400, FS 450, FS 480 29 Check that the cutting tool is idling. To shut down to e : Press in decompression valve button again and continue cranking. If the engine does not start ) quickly enough after the engine began to fire, the combustion chamber has flooded. : Set slide control, interlock lever and throttle trigger to the starting throttle position. : Start the engine by pulling the starter rope...
Instruction Manual
Page 31
... components (ignition, carburetor) from thermal overload. English / USA Operating Instructions 5 If the engine still does not start the engine. 271BA019 KN Throttle cable : Check adjustment of cooling air. Check tightness of nuts and screws (not adjusting screws) at idle speed so that the heat in a dry place. After finishing work Wait for a while at regular intervals and retighten as necessary. 30 FS 300, FS 350, FS 400, FS 450, FS 480 Connect the spark plug boot (press...
... components (ignition, carburetor) from thermal overload. English / USA Operating Instructions 5 If the engine still does not start the engine. 271BA019 KN Throttle cable : Check adjustment of cooling air. Check tightness of nuts and screws (not adjusting screws) at idle speed so that the heat in a dry place. After finishing work Wait for a while at regular intervals and retighten as necessary. 30 FS 300, FS 350, FS 400, FS 450, FS 480 Connect the spark plug boot (press...
Instruction Manual
Page 36
... air filter is down on power, difficult to start or runs poorly at part load. FS 300, FS 350, FS 400, FS 450, FS 480 35 see "Specifications". : Use only resistor type spark plugs of spark plug: : Too much oil in the muffler. STIHL recommends that could ignite combustible fumes and cause a fire. operating at idling speed, first check the spark plug. : Remove spark plug - Rectify problems which have caused fouling of the approved range. English / USA Engine Running Behavior If engine is clean and the carburetor and throttle cable...
... air filter is down on power, difficult to start or runs poorly at part load. FS 300, FS 350, FS 400, FS 450, FS 480 35 see "Specifications". : Use only resistor type spark plugs of spark plug: : Too much oil in the muffler. STIHL recommends that could ignite combustible fumes and cause a fire. operating at idling speed, first check the spark plug. : Remove spark plug - Rectify problems which have caused fouling of the approved range. English / USA Engine Running Behavior If engine is clean and the carburetor and throttle cable...
Instruction Manual
Page 37
... end of the new starter rope (see "Guide to avoid injury during the following operation. : Remove the screws (1). : Lift away the fan housing. : Remove the spring clip (2). : Carefully pull off the rope rotor with grease. : Refit the filler plug and tighten it down firmly. English / USA Lubricating the Gearbox 1 2 Replacing the Starter Rope and Rewind Spring 1 1 1 1 32 4 256BA063 KN 5 6 256BA033 KN 256BA032 KN 256BA044 KN Use STIHL gear lubricant for brushcutters...
... end of the new starter rope (see "Guide to avoid injury during the following operation. : Remove the screws (1). : Lift away the fan housing. : Remove the spring clip (2). : Carefully pull off the rope rotor with grease. : Refit the filler plug and tighten it down firmly. English / USA Lubricating the Gearbox 1 2 Replacing the Starter Rope and Rewind Spring 1 1 1 1 32 4 256BA063 KN 5 6 256BA033 KN 256BA032 KN 256BA044 KN Use STIHL gear lubricant for brushcutters...
Instruction Manual
Page 39
..., 350 9 9 : Take out the screws (9). : Remove the spring housing and parts of old spring. : Lubricate the new spring spring in a dry, high or locked location - bottom plate must face up. start outside and work inward. : Fit the screw. : Install the rope rotor as described in "Replacing the Starter Rope". : Tension the rewind spring. : Fit the fan housing. English / USA Storing the Machine 8 : Place spring with local environmental requirements. : Run engine until carburetor is correctly seated. : Use a suitable tool...
..., 350 9 9 : Take out the screws (9). : Remove the spring housing and parts of old spring. : Lubricate the new spring spring in a dry, high or locked location - bottom plate must face up. start outside and work inward. : Fit the screw. : Install the rope rotor as described in "Replacing the Starter Rope". : Tension the rewind spring. : Fit the fan housing. English / USA Storing the Machine 8 : Place spring with local environmental requirements. : Run engine until carburetor is correctly seated. : Use a suitable tool...
Instruction Manual
Page 41
... accordingly. Complete machine Control handle Air filter Pick up body in fuel tank Fuel tank Carburetor Spark plug Cooling inlets Spark arresting screen* in all versions, market-specific X X X X X X X X X X X X X X X X X X X X 40 FS 300, FS 350, FS 400, FS 450, FS 480 before starting work after finishing work or daily after about 100 operating hours Inspect X Clean Check Have replaced by servicing dealer1) Retighten Check X Have replaced by a STIHL servicing dealer * not in muffler All accessible screws and nuts (not adjusting screws) Anti-vibration element...
... accordingly. Complete machine Control handle Air filter Pick up body in fuel tank Fuel tank Carburetor Spark plug Cooling inlets Spark arresting screen* in all versions, market-specific X X X X X X X X X X X X X X X X X X X X 40 FS 300, FS 350, FS 400, FS 450, FS 480 before starting work after finishing work or daily after about 100 operating hours Inspect X Clean Check Have replaced by servicing dealer1) Retighten Check X Have replaced by a STIHL servicing dealer * not in muffler All accessible screws and nuts (not adjusting screws) Anti-vibration element...
Instruction Manual
Page 44
.... Fuel Pump Provides additional fuel feed for different purposes. 20. Spark Plug Boot Connects the spark plug to the harness. 8. Carburetor Adjusting Screws For tuning the carburetor. 17. FS 300, FS 350, FS 400, FS 450, FS 480 43 Choke Knob Eases engine starting . 14. Handle Heating Switch. For switching the electric handle heating on the ground. 19. Throttle Trigger Interlock Must be depressed before the throttle trigger can be adjusted as described in selected position. 7. Filter cover Encloses and protects the air filter. 11. Guard plate...
.... Fuel Pump Provides additional fuel feed for different purposes. 20. Spark Plug Boot Connects the spark plug to the harness. 8. Carburetor Adjusting Screws For tuning the carburetor. 17. FS 300, FS 350, FS 400, FS 450, FS 480 43 Choke Knob Eases engine starting . 14. Handle Heating Switch. For switching the electric handle heating on the ground. 19. Throttle Trigger Interlock Must be depressed before the throttle trigger can be adjusted as described in selected position. 7. Filter cover Encloses and protects the air filter. 11. Guard plate...
Instruction Manual
Page 47
... emission related assemblies. Any replacement part or service that is free from defects in a reasonable amount of the engine manufacturer. STIHL Incorporated also warrants to STIHL. 46 FS 300, FS 350, FS 400, FS 450, FS 480 English / USA STIHL Incorporated Federal Emission Control Warranty Statement Your Warranty Rights and Obligations The U.S. EPA regulations for two years. Owner's Warranty Responsibilities: As the small off -road engine for a period of time listed below provided...
... emission related assemblies. Any replacement part or service that is free from defects in a reasonable amount of the engine manufacturer. STIHL Incorporated also warrants to STIHL. 46 FS 300, FS 350, FS 400, FS 450, FS 480 English / USA STIHL Incorporated Federal Emission Control Warranty Statement Your Warranty Rights and Obligations The U.S. EPA regulations for two years. Owner's Warranty Responsibilities: As the small off -road engine for a period of time listed below provided...
Instruction Manual
Page 48
... you for required maintenance at an authorized STIHL servicing dealer. FS 300, FS 350, FS 400, FS 450, FS 480 47 The following list specifically defines the emission-related warranted parts: Carburetor Choke (Cold start enrichment system) Intake manifold Air filter Spark plug Magneto or electronic ignition system (ignition module) Catalytic converter (if applicable) Fasteners Where to make a claim for Warranty Service Bring the product to any of the following: : repair or replacement required because...
... you for required maintenance at an authorized STIHL servicing dealer. FS 300, FS 350, FS 400, FS 450, FS 480 47 The following list specifically defines the emission-related warranted parts: Carburetor Choke (Cold start enrichment system) Intake manifold Air filter Spark plug Magneto or electronic ignition system (ignition module) Catalytic converter (if applicable) Fasteners Where to make a claim for Warranty Service Bring the product to any of the following: : repair or replacement required because...