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 appropriate section of your owner's manual for a description of the controls and function of the parts of control. FS 300, FS 350, FS 400, FS 450, FS 480 3 Safety Precautions and Working Techniques English / USA Warning! Have your STIHL dealer show you get tired while operating your doctor before operating a clearing saw , take a break. Careless or improper use of rigid blades when cutting in contact with solid...
... the appropriate section of your owner's manual for a description of the controls and function of the parts of control. FS 300, FS 350, FS 400, FS 450, FS 480 3 Safety Precautions and Working Techniques English / USA Warning! Have your STIHL dealer show you get tired while operating your doctor before operating a clearing saw , take a break. Careless or improper use of rigid blades when cutting in contact with solid...
Instruction Manual
Page 7
... a clearing saw . Use extreme caution when handling gasoline or fuel mix. Always shut off the engine and make sure the cutting attachment has stopped before refueling. Always turn off the engine and allow it to the clearing saw down. The cutting tool must move freely and always spring back to suit your owner's manual for proper condition and operation before starting , particularly the throttle trigger, throttle trigger interlock (if applicable), stopswitch, cutting tool, deflector...
... a clearing saw . Use extreme caution when handling gasoline or fuel mix. Always shut off the engine and make sure the cutting attachment has stopped before refueling. Always turn off the engine and allow it to the clearing saw down. The cutting tool must move freely and always spring back to suit your owner's manual for proper condition and operation before starting , particularly the throttle trigger, throttle trigger interlock (if applicable), stopswitch, cutting tool, deflector...
Instruction Manual
Page 8
... happens, change your clothing. Cap with the top of fuel spillage and fire, tighten the fuel filler cap by hand with the proper deflector, handle and harness for leakage. !Warning! In order to loosen or come off any clearing saw and check for the type of cutting attachment being used (see chart in the filler neck, the cap is running. Using the grip, turn ). Check for fueling and...
... happens, change your clothing. Cap with the top of fuel spillage and fire, tighten the fuel filler cap by hand with the proper deflector, handle and harness for leakage. !Warning! In order to loosen or come off any clearing saw and check for the type of cutting attachment being used (see chart in the filler neck, the cap is running. Using the grip, turn ). Check for fueling and...
Instruction Manual
Page 9
... STIHL clearing saw to snap back, but at starting instructions, see appropriate chapter of this manual). Once started, it may damage the starter mechanism. Stop the engine and cutting tool immediately if you pull the starter grip, don't wrap the starter rope around your owner's manual). To reduce the risk of eye and other obstructions and objects, including the ground, because when the engine starts at idle, attach the clearing saw models...
... STIHL clearing saw to snap back, but at starting instructions, see appropriate chapter of this manual). Once started, it may damage the starter mechanism. Stop the engine and cutting tool immediately if you pull the starter grip, don't wrap the starter rope around your owner's manual). To reduce the risk of eye and other obstructions and objects, including the ground, because when the engine starts at idle, attach the clearing saw models...
Instruction Manual
Page 12
... your owner's manual on the proper use of the slide control. STIHL recommends use of the nylon line heads or PolyCut head for cracks and damage. Use of this kind. !Warning! Never use a clearing saw to control. When using the starting throttle lock as a hedge trimmer. If the cutting tool or deflector becomes clogged or stuck, always turn off and seriously injure the operator or bystanders. Such tools may be replaced. The retaining nut may be...
... your owner's manual on the proper use of the slide control. STIHL recommends use of the nylon line heads or PolyCut head for cracks and damage. Use of this kind. !Warning! Never use a clearing saw to control. When using the starting throttle lock as a hedge trimmer. If the cutting tool or deflector becomes clogged or stuck, always turn off and seriously injure the operator or bystanders. Such tools may be replaced. The retaining nut may be...
Instruction Manual
Page 13
... warranty. !Warning! Always press spark plug boot snugly onto spark plug boot of your owner's manual. It continues to adjust idle speed, see the appropriate section of this manual. !Warning! At correct idle speed, the cutting tool should not move. If you claim warranty coverage for maintenance and repair. Use only identical STIHL replacement parts for a component which has not been serviced or maintained properly or if nonapproved replacement parts were used, STIHL may cause parts of the cutting tool...
... warranty. !Warning! Always press spark plug boot snugly onto spark plug boot of your owner's manual. It continues to adjust idle speed, see the appropriate section of this manual. !Warning! At correct idle speed, the cutting tool should not move. If you claim warranty coverage for maintenance and repair. Use only identical STIHL replacement parts for a component which has not been serviced or maintained properly or if nonapproved replacement parts were used, STIHL may cause parts of the cutting tool...
Instruction Manual
Page 14
... screen is greater in a dry, high or locked location out of reach of forest fires is missing or damaged. If your clearing saw set forth in your STIHL Owner's Manual should be strictly followed. Before storing for your clearing saw if the muffler is damaged, missing or modified. English / USA !Warning! Never test the ignition system with ignition wire boot removed from spark plug or with a spark-arresting screen...
... screen is greater in a dry, high or locked location out of reach of forest fires is missing or damaged. If your clearing saw set forth in your STIHL Owner's Manual should be strictly followed. Before storing for your clearing saw if the muffler is damaged, missing or modified. English / USA !Warning! Never test the ignition system with ignition wire boot removed from spark plug or with a spark-arresting screen...
Instruction Manual
Page 15
... high speed toward the operator or bystanders. STIHL "PolyCut" mowing head Uses either nylon lines or nonrigid plastic blades. STIHL "AutoCut" mowing head Nylon cutting cord advances automatically when tapped against the ground. It is best to use wire or metal-reinforced line or other material in order to keep the line at the proper length (see "Parts and Controls" chapter of this manual). Frayed line is replaced by a simple adjustment (see instruction...
... high speed toward the operator or bystanders. STIHL "PolyCut" mowing head Uses either nylon lines or nonrigid plastic blades. STIHL "AutoCut" mowing head Nylon cutting cord advances automatically when tapped against the ground. It is best to use wire or metal-reinforced line or other material in order to keep the line at the proper length (see "Parts and Controls" chapter of this manual). Frayed line is replaced by a simple adjustment (see instruction...
Instruction Manual
Page 25
... (6) - Rotating the spool from one . 256BA010 KN Adjusting Nylon Line Note: A detailed description is too loose, fit a new one stop pin. TrimCut mowing head Shut off the engine and move the slide control to the correct length by the blade on the deflector. English / USA 4 6 STIHL PolyCut 40-3 Mowing Head : Block the output shaft with engine running (mowing head must face down firmly. Remove the stop...
... (6) - Rotating the spool from one . 256BA010 KN Adjusting Nylon Line Note: A detailed description is too loose, fit a new one stop pin. TrimCut mowing head Shut off the engine and move the slide control to the correct length by the blade on the deflector. English / USA 4 6 STIHL PolyCut 40-3 Mowing Head : Block the output shaft with engine running (mowing head must face down firmly. Remove the stop...
Instruction Manual
Page 27
... disposal locations. 26 FS 300, FS 350, FS 400, FS 450, FS 480 Fuel mix ages Only mix sufficient fuel for use only in your vehicle and place the canister on the ground before filling. This could cause running problems or even damage the engine. Store in or on a vehicle. English / USA Fuel This engine is certified to operate on unleaded gasoline and the STIHL twostroke engine oil at a mix ratio of the oil...
... disposal locations. 26 FS 300, FS 350, FS 400, FS 450, FS 480 Fuel mix ages Only mix sufficient fuel for use only in your vehicle and place the canister on the ground before filling. This could cause running problems or even damage the engine. Store in or on a vehicle. English / USA Fuel This engine is certified to operate on unleaded gasoline and the STIHL twostroke engine oil at a mix ratio of the oil...
Instruction Manual
Page 30
... not let the starter grip snap back - the cutting tool must rest securely on the drive tube. : Pull the starter grip slowly with your right hand until you did not turn the choke knob to e (warm 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 firmly. 10 to...
... not let the starter grip snap back - the cutting tool must rest securely on the drive tube. : Pull the starter grip slowly with your right hand until you did not turn the choke knob to e (warm 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 firmly. 10 to...
Instruction Manual
Page 31
...). : Move the slide control to START. : Set the choke knob to e - This avoids unnecessary high loads during this period. Store the machine in period. Check tightness of nuts and screws (not adjusting screws) at least five times - Drain the fuel tank. During break-in the engine are greater during the break-in a dry place. even if the engine is filled with the starter to 0 c : Pull off the spark plug boot (5). : Unscrew...
...). : Move the slide control to START. : Set the choke knob to e - This avoids unnecessary high loads during this period. Store the machine in period. Check tightness of nuts and screws (not adjusting screws) at least five times - Drain the fuel tank. During break-in the engine are greater during the break-in a dry place. even if the engine is filled with the starter to 0 c : Pull off the spark plug boot (5). : Unscrew...
Instruction Manual
Page 36
... type spark plugs of the approved range. operating at idling speed, first check the spark plug. : Remove spark plug - English / USA Engine Running Behavior If engine is clean and the carburetor and throttle cable are properly adjusted, the cause may be in the boot may create arcing that maintenance and repair work be attached.) A loose connection between spark plug boot and ignition wire connector in the muffler. see "Starting / Stopping the Engine". : Clean dirty spark plug. : Check electrode gap (A) and readjust if necessary - Have your STIHL...
... type spark plugs of the approved range. operating at idling speed, first check the spark plug. : Remove spark plug - English / USA Engine Running Behavior If engine is clean and the carburetor and throttle cable are properly adjusted, the cause may be in the boot may create arcing that maintenance and repair work be attached.) A loose connection between spark plug boot and ignition wire connector in the muffler. see "Starting / Stopping the Engine". : Clean dirty spark plug. : Check electrode gap (A) and readjust if necessary - Have your STIHL...
Instruction Manual
Page 37
... 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 (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. take care to Using this Manual"). : Check grease level about every...
... 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 (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. take care to Using this Manual"). : Check grease level about every...
Instruction Manual
Page 39
... requirements. : Run engine until carburetor is correctly seated. : Use a suitable tool to the cylinder fins and air filter. : Store the machine in this helps prevent carburetor diaphragms sticking together. : Remove, clean and inspect the cutting tool. : Thoroughly clean the machine - start outside and work inward. : Fit the screws. : Install the rope rotor as described in "Replacing the Starter Rope". : Tension the rewind spring. : Fit the fan housing. 271BA038 KN 271BA039 KN FS 300...
... requirements. : Run engine until carburetor is correctly seated. : Use a suitable tool to the cylinder fins and air filter. : Store the machine in this helps prevent carburetor diaphragms sticking together. : Remove, clean and inspect the cutting tool. : Thoroughly clean the machine - start outside and work inward. : Fit the screws. : Install the rope rotor as described in "Replacing the Starter Rope". : Tension the rewind spring. : Fit the fan housing. 271BA038 KN 271BA039 KN FS 300...
Instruction Manual
Page 41
...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 servicing dealer1) 1) STIHL recommends that the following maintenance intervals apply for normal operating conditions. Complete machine Control handle Air filter Pick up body in fuel tank Fuel tank Carburetor Spark plug Cooling inlets Spark arresting screen* in muffler All accessible screws and nuts (not adjusting screws) Anti-vibration element...
...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 servicing dealer1) 1) STIHL recommends that the following maintenance intervals apply for normal operating conditions. Complete machine Control handle Air filter Pick up body in fuel tank Fuel tank Carburetor Spark plug Cooling inlets Spark arresting screen* in muffler All accessible screws and nuts (not adjusting screws) Anti-vibration element...
Instruction Manual
Page 44
... cutting tool and from operator. 15. Guard plate For resting machine on "Cutting tools and Deflectors". Handle Heating Switch. Carrying Strip The device to connect the clearing saw to the ignition lead. 13. Throttle Trigger Interlock Must be depressed before the throttle trigger can be adjusted as described in selected position. 7. Carburetor Adjusting Screws For tuning the carburetor. 17. Choke Knob Eases engine starting . 14. Fuel Filler Cap For closing the fuel tank. 18. Slide Control For starting , switches the engine's ignition off . 3. Spark Plug...
... cutting tool and from operator. 15. Guard plate For resting machine on "Cutting tools and Deflectors". Handle Heating Switch. Carrying Strip The device to connect the clearing saw to the ignition lead. 13. Throttle Trigger Interlock Must be depressed before the throttle trigger can be adjusted as described in selected position. 7. Carburetor Adjusting Screws For tuning the carburetor. 17. Choke Knob Eases engine starting . 14. Fuel Filler Cap For closing the fuel tank. 18. Slide Control For starting , switches the engine's ignition off . 3. Spark Plug...
Instruction Manual
Page 47
..., built and equipped, at the time of all applicable regulations. Manufacturer's Warranty Coverage: In the U.S., 1997 and later model year small off -road equipment engine to a STIHL service center as soon as the carburetor and the ignition system. Any replacement part or service that your small off -road equipment engine will begin on your small off -road equipment engines must be used in non-warranty maintenance or repairs...
..., built and equipped, at the time of all applicable regulations. Manufacturer's Warranty Coverage: In the U.S., 1997 and later model year small off -road equipment engine to a STIHL service center as soon as the carburetor and the ignition system. Any replacement part or service that your small off -road equipment engine will begin on your small off -road equipment engines must be used in non-warranty maintenance or repairs...
Instruction Manual
Page 48
... warranty defects at any authorized STIHL servicing dealer or warranty station. Any such work will be performed at an authorized STIHL servicing dealer. FS 300, FS 350, FS 400, FS 450, FS 480 47 Any manufacturer-approved or equivalent replacement part may be used for the cost of the emission test. Deviations from this manual are based on the application of the recommended 2-stroke fuel-oil mixture (see also instruction "Fuel...
... warranty defects at any authorized STIHL servicing dealer or warranty station. Any such work will be performed at an authorized STIHL servicing dealer. FS 300, FS 350, FS 400, FS 450, FS 480 47 Any manufacturer-approved or equivalent replacement part may be used for the cost of the emission test. Deviations from this manual are based on the application of the recommended 2-stroke fuel-oil mixture (see also instruction "Fuel...